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3884 lines
138 KiB
C
3884 lines
138 KiB
C
/* Copyright (c) Mark Harmstone 2017
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*
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* This file is part of WinBtrfs.
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*
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* WinBtrfs is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public Licence as published by
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* the Free Software Foundation, either version 3 of the Licence, or
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* (at your option) any later version.
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*
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* WinBtrfs is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public Licence for more details.
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*
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* You should have received a copy of the GNU Lesser General Public Licence
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* along with WinBtrfs. If not, see <http://www.gnu.org/licenses/>. */
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#include "btrfs_drv.h"
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#include "crc32c.h"
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typedef struct send_dir {
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LIST_ENTRY list_entry;
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uint64_t inode;
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bool dummy;
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BTRFS_TIME atime;
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BTRFS_TIME mtime;
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BTRFS_TIME ctime;
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struct send_dir* parent;
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uint16_t namelen;
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char* name;
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LIST_ENTRY deleted_children;
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} send_dir;
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typedef struct {
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LIST_ENTRY list_entry;
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uint64_t inode;
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bool dir;
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send_dir* sd;
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char tmpname[64];
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} orphan;
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typedef struct {
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LIST_ENTRY list_entry;
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ULONG namelen;
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char name[1];
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} deleted_child;
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typedef struct {
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LIST_ENTRY list_entry;
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send_dir* sd;
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uint16_t namelen;
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char name[1];
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} ref;
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typedef struct {
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send_dir* sd;
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uint64_t last_child_inode;
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LIST_ENTRY list_entry;
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} pending_rmdir;
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typedef struct {
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uint64_t offset;
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LIST_ENTRY list_entry;
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ULONG datalen;
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EXTENT_DATA data;
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} send_ext;
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typedef struct {
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device_extension* Vcb;
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root* root;
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root* parent;
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uint8_t* data;
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ULONG datalen;
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ULONG num_clones;
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root** clones;
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LIST_ENTRY orphans;
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LIST_ENTRY dirs;
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LIST_ENTRY pending_rmdirs;
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KEVENT buffer_event;
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send_dir* root_dir;
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send_info* send;
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struct {
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uint64_t inode;
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bool deleting;
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bool new;
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uint64_t gen;
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uint64_t uid;
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uint64_t olduid;
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uint64_t gid;
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uint64_t oldgid;
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uint64_t mode;
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uint64_t oldmode;
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uint64_t size;
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uint64_t flags;
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BTRFS_TIME atime;
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BTRFS_TIME mtime;
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BTRFS_TIME ctime;
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bool file;
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char* path;
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orphan* o;
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send_dir* sd;
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LIST_ENTRY refs;
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LIST_ENTRY oldrefs;
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LIST_ENTRY exts;
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LIST_ENTRY oldexts;
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} lastinode;
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} send_context;
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#define MAX_SEND_WRITE 0xc000 // 48 KB
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#define SEND_BUFFER_LENGTH 0x100000 // 1 MB
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static NTSTATUS find_send_dir(send_context* context, uint64_t dir, uint64_t generation, send_dir** psd, bool* added_dummy);
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static NTSTATUS wait_for_flush(send_context* context, traverse_ptr* tp1, traverse_ptr* tp2);
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static void send_command(send_context* context, uint16_t cmd) {
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btrfs_send_command* bsc = (btrfs_send_command*)&context->data[context->datalen];
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bsc->cmd = cmd;
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bsc->csum = 0;
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context->datalen += sizeof(btrfs_send_command);
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}
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static void send_command_finish(send_context* context, ULONG pos) {
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btrfs_send_command* bsc = (btrfs_send_command*)&context->data[pos];
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bsc->length = context->datalen - pos - sizeof(btrfs_send_command);
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bsc->csum = calc_crc32c(0, (uint8_t*)bsc, context->datalen - pos);
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}
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static void send_add_tlv(send_context* context, uint16_t type, void* data, uint16_t length) {
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btrfs_send_tlv* tlv = (btrfs_send_tlv*)&context->data[context->datalen];
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tlv->type = type;
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tlv->length = length;
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if (length > 0 && data)
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RtlCopyMemory(&tlv[1], data, length);
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context->datalen += sizeof(btrfs_send_tlv) + length;
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}
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static char* uint64_to_char(uint64_t num, char* buf) {
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char *tmp, tmp2[20];
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if (num == 0) {
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buf[0] = '0';
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return buf + 1;
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}
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tmp = &tmp2[20];
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while (num > 0) {
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tmp--;
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*tmp = (num % 10) + '0';
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num /= 10;
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}
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RtlCopyMemory(buf, tmp, tmp2 + sizeof(tmp2) - tmp);
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return &buf[tmp2 + sizeof(tmp2) - tmp];
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}
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static NTSTATUS get_orphan_name(send_context* context, uint64_t inode, uint64_t generation, char* name) {
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char *ptr, *ptr2;
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uint64_t index = 0;
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KEY searchkey;
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name[0] = 'o';
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ptr = uint64_to_char(inode, &name[1]);
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*ptr = '-'; ptr++;
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ptr = uint64_to_char(generation, ptr);
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*ptr = '-'; ptr++;
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ptr2 = ptr;
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searchkey.obj_id = SUBVOL_ROOT_INODE;
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searchkey.obj_type = TYPE_DIR_ITEM;
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do {
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NTSTATUS Status;
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traverse_ptr tp;
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ptr = uint64_to_char(index, ptr);
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*ptr = 0;
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searchkey.offset = calc_crc32c(0xfffffffe, (uint8_t*)name, (ULONG)(ptr - name));
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Status = find_item(context->Vcb, context->root, &tp, &searchkey, false, NULL);
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if (!NT_SUCCESS(Status)) {
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ERR("find_item returned %08lx\n", Status);
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return Status;
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}
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if (!keycmp(searchkey, tp.item->key))
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goto cont;
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if (context->parent) {
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Status = find_item(context->Vcb, context->parent, &tp, &searchkey, false, NULL);
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if (!NT_SUCCESS(Status)) {
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ERR("find_item returned %08lx\n", Status);
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return Status;
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}
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if (!keycmp(searchkey, tp.item->key))
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goto cont;
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}
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return STATUS_SUCCESS;
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cont:
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index++;
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ptr = ptr2;
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} while (true);
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}
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static void add_orphan(send_context* context, orphan* o) {
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LIST_ENTRY* le;
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le = context->orphans.Flink;
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while (le != &context->orphans) {
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orphan* o2 = CONTAINING_RECORD(le, orphan, list_entry);
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if (o2->inode > o->inode) {
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InsertHeadList(o2->list_entry.Blink, &o->list_entry);
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return;
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}
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le = le->Flink;
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}
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InsertTailList(&context->orphans, &o->list_entry);
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}
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static NTSTATUS send_read_symlink(send_context* context, uint64_t inode, char** link, uint16_t* linklen) {
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NTSTATUS Status;
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KEY searchkey;
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traverse_ptr tp;
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EXTENT_DATA* ed;
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searchkey.obj_id = inode;
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searchkey.obj_type = TYPE_EXTENT_DATA;
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searchkey.offset = 0;
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Status = find_item(context->Vcb, context->root, &tp, &searchkey, false, NULL);
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if (!NT_SUCCESS(Status)) {
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ERR("find_item returned %08lx\n", Status);
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return Status;
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}
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if (keycmp(tp.item->key, searchkey)) {
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ERR("could not find (%I64x,%x,%I64x)\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset);
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return STATUS_INTERNAL_ERROR;
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}
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if (tp.item->size < sizeof(EXTENT_DATA)) {
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ERR("(%I64x,%x,%I64x) was %u bytes, expected at least %Iu\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset,
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tp.item->size, sizeof(EXTENT_DATA));
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return STATUS_INTERNAL_ERROR;
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}
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ed = (EXTENT_DATA*)tp.item->data;
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if (ed->type != EXTENT_TYPE_INLINE) {
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WARN("symlink data was not inline, returning blank string\n");
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*link = NULL;
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*linklen = 0;
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return STATUS_SUCCESS;
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}
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if (tp.item->size < offsetof(EXTENT_DATA, data[0]) + ed->decoded_size) {
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ERR("(%I64x,%x,%I64x) was %u bytes, expected %I64u\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset,
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tp.item->size, offsetof(EXTENT_DATA, data[0]) + ed->decoded_size);
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return STATUS_INTERNAL_ERROR;
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}
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*link = (char*)ed->data;
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*linklen = (uint16_t)ed->decoded_size;
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return STATUS_SUCCESS;
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}
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static NTSTATUS send_inode(send_context* context, traverse_ptr* tp, traverse_ptr* tp2) {
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NTSTATUS Status;
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INODE_ITEM* ii;
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if (tp2 && !tp) {
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INODE_ITEM* ii2 = (INODE_ITEM*)tp2->item->data;
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if (tp2->item->size < sizeof(INODE_ITEM)) {
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ERR("(%I64x,%x,%I64x) was %u bytes, expected %Iu\n", tp2->item->key.obj_id, tp2->item->key.obj_type, tp2->item->key.offset,
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tp2->item->size, sizeof(INODE_ITEM));
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return STATUS_INTERNAL_ERROR;
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}
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context->lastinode.inode = tp2->item->key.obj_id;
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context->lastinode.deleting = true;
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context->lastinode.gen = ii2->generation;
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context->lastinode.mode = ii2->st_mode;
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context->lastinode.flags = ii2->flags;
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context->lastinode.o = NULL;
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context->lastinode.sd = NULL;
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return STATUS_SUCCESS;
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}
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ii = (INODE_ITEM*)tp->item->data;
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if (tp->item->size < sizeof(INODE_ITEM)) {
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ERR("(%I64x,%x,%I64x) was %u bytes, expected %Iu\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset,
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tp->item->size, sizeof(INODE_ITEM));
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return STATUS_INTERNAL_ERROR;
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}
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context->lastinode.inode = tp->item->key.obj_id;
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context->lastinode.deleting = false;
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context->lastinode.gen = ii->generation;
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context->lastinode.uid = ii->st_uid;
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context->lastinode.gid = ii->st_gid;
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context->lastinode.mode = ii->st_mode;
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context->lastinode.size = ii->st_size;
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context->lastinode.atime = ii->st_atime;
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context->lastinode.mtime = ii->st_mtime;
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context->lastinode.ctime = ii->st_ctime;
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context->lastinode.flags = ii->flags;
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context->lastinode.file = false;
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context->lastinode.o = NULL;
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context->lastinode.sd = NULL;
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if (context->lastinode.path) {
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ExFreePool(context->lastinode.path);
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context->lastinode.path = NULL;
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}
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if (tp2) {
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INODE_ITEM* ii2 = (INODE_ITEM*)tp2->item->data;
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LIST_ENTRY* le;
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if (tp2->item->size < sizeof(INODE_ITEM)) {
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ERR("(%I64x,%x,%I64x) was %u bytes, expected %Iu\n", tp2->item->key.obj_id, tp2->item->key.obj_type, tp2->item->key.offset,
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tp2->item->size, sizeof(INODE_ITEM));
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return STATUS_INTERNAL_ERROR;
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}
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context->lastinode.oldmode = ii2->st_mode;
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context->lastinode.olduid = ii2->st_uid;
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context->lastinode.oldgid = ii2->st_gid;
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if ((ii2->st_mode & __S_IFREG) == __S_IFREG && (ii2->st_mode & __S_IFLNK) != __S_IFLNK && (ii2->st_mode & __S_IFSOCK) != __S_IFSOCK)
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context->lastinode.file = true;
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context->lastinode.new = false;
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le = context->orphans.Flink;
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while (le != &context->orphans) {
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orphan* o2 = CONTAINING_RECORD(le, orphan, list_entry);
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if (o2->inode == tp->item->key.obj_id) {
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context->lastinode.o = o2;
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break;
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} else if (o2->inode > tp->item->key.obj_id)
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break;
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le = le->Flink;
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}
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} else
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context->lastinode.new = true;
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if (tp->item->key.obj_id == SUBVOL_ROOT_INODE) {
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send_dir* sd;
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Status = find_send_dir(context, tp->item->key.obj_id, ii->generation, &sd, NULL);
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if (!NT_SUCCESS(Status)) {
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ERR("find_send_dir returned %08lx\n", Status);
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return Status;
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}
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sd->atime = ii->st_atime;
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sd->mtime = ii->st_mtime;
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sd->ctime = ii->st_ctime;
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context->root_dir = sd;
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} else if (!tp2) {
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ULONG pos = context->datalen;
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uint16_t cmd;
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send_dir* sd;
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char name[64];
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orphan* o;
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// skip creating orphan directory if we've already done so
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if (ii->st_mode & __S_IFDIR) {
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LIST_ENTRY* le;
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le = context->orphans.Flink;
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while (le != &context->orphans) {
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orphan* o2 = CONTAINING_RECORD(le, orphan, list_entry);
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if (o2->inode == tp->item->key.obj_id) {
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context->lastinode.o = o2;
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o2->sd->atime = ii->st_atime;
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o2->sd->mtime = ii->st_mtime;
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o2->sd->ctime = ii->st_ctime;
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o2->sd->dummy = false;
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return STATUS_SUCCESS;
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} else if (o2->inode > tp->item->key.obj_id)
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break;
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le = le->Flink;
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}
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}
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if ((ii->st_mode & __S_IFSOCK) == __S_IFSOCK)
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cmd = BTRFS_SEND_CMD_MKSOCK;
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else if ((ii->st_mode & __S_IFLNK) == __S_IFLNK)
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cmd = BTRFS_SEND_CMD_SYMLINK;
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else if ((ii->st_mode & __S_IFCHR) == __S_IFCHR || (ii->st_mode & __S_IFBLK) == __S_IFBLK)
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cmd = BTRFS_SEND_CMD_MKNOD;
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else if ((ii->st_mode & __S_IFDIR) == __S_IFDIR)
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cmd = BTRFS_SEND_CMD_MKDIR;
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else if ((ii->st_mode & __S_IFIFO) == __S_IFIFO)
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cmd = BTRFS_SEND_CMD_MKFIFO;
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else {
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cmd = BTRFS_SEND_CMD_MKFILE;
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context->lastinode.file = true;
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}
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send_command(context, cmd);
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Status = get_orphan_name(context, tp->item->key.obj_id, ii->generation, name);
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if (!NT_SUCCESS(Status)) {
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ERR("get_orphan_name returned %08lx\n", Status);
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return Status;
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}
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send_add_tlv(context, BTRFS_SEND_TLV_PATH, name, (uint16_t)strlen(name));
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send_add_tlv(context, BTRFS_SEND_TLV_INODE, &tp->item->key.obj_id, sizeof(uint64_t));
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if (cmd == BTRFS_SEND_CMD_MKNOD || cmd == BTRFS_SEND_CMD_MKFIFO || cmd == BTRFS_SEND_CMD_MKSOCK) {
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uint64_t rdev = makedev((ii->st_rdev & 0xFFFFFFFFFFF) >> 20, ii->st_rdev & 0xFFFFF), mode = ii->st_mode;
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send_add_tlv(context, BTRFS_SEND_TLV_RDEV, &rdev, sizeof(uint64_t));
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send_add_tlv(context, BTRFS_SEND_TLV_MODE, &mode, sizeof(uint64_t));
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} else if (cmd == BTRFS_SEND_CMD_SYMLINK && ii->st_size > 0) {
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char* link;
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uint16_t linklen;
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Status = send_read_symlink(context, tp->item->key.obj_id, &link, &linklen);
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if (!NT_SUCCESS(Status)) {
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ERR("send_read_symlink returned %08lx\n", Status);
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return Status;
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}
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send_add_tlv(context, BTRFS_SEND_TLV_PATH_LINK, link, linklen);
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}
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send_command_finish(context, pos);
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if (ii->st_mode & __S_IFDIR) {
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Status = find_send_dir(context, tp->item->key.obj_id, ii->generation, &sd, NULL);
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if (!NT_SUCCESS(Status)) {
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ERR("find_send_dir returned %08lx\n", Status);
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return Status;
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}
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sd->dummy = false;
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} else
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sd = NULL;
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context->lastinode.sd = sd;
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|
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o = ExAllocatePoolWithTag(PagedPool, sizeof(orphan), ALLOC_TAG);
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if (!o) {
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ERR("out of memory\n");
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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|
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o->inode = tp->item->key.obj_id;
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o->dir = (ii->st_mode & __S_IFDIR && ii->st_size > 0) ? true : false;
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strcpy(o->tmpname, name);
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o->sd = sd;
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add_orphan(context, o);
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|
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context->lastinode.path = ExAllocatePoolWithTag(PagedPool, strlen(o->tmpname) + 1, ALLOC_TAG);
|
|
if (!context->lastinode.path) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
strcpy(context->lastinode.path, o->tmpname);
|
|
|
|
context->lastinode.o = o;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS send_add_dir(send_context* context, uint64_t inode, send_dir* parent, char* name, uint16_t namelen, bool dummy, LIST_ENTRY* lastentry, send_dir** psd) {
|
|
LIST_ENTRY* le;
|
|
send_dir* sd = ExAllocatePoolWithTag(PagedPool, sizeof(send_dir), ALLOC_TAG);
|
|
|
|
if (!sd) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
sd->inode = inode;
|
|
sd->dummy = dummy;
|
|
sd->parent = parent;
|
|
|
|
if (!dummy) {
|
|
sd->atime = context->lastinode.atime;
|
|
sd->mtime = context->lastinode.mtime;
|
|
sd->ctime = context->lastinode.ctime;
|
|
}
|
|
|
|
if (namelen > 0) {
|
|
sd->name = ExAllocatePoolWithTag(PagedPool, namelen, ALLOC_TAG);
|
|
if (!sd->name) {
|
|
ERR("out of memory\n");
|
|
ExFreePool(sd);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
memcpy(sd->name, name, namelen);
|
|
} else
|
|
sd->name = NULL;
|
|
|
|
sd->namelen = namelen;
|
|
|
|
InitializeListHead(&sd->deleted_children);
|
|
|
|
if (lastentry)
|
|
InsertHeadList(lastentry, &sd->list_entry);
|
|
else {
|
|
le = context->dirs.Flink;
|
|
while (le != &context->dirs) {
|
|
send_dir* sd2 = CONTAINING_RECORD(le, send_dir, list_entry);
|
|
|
|
if (sd2->inode > sd->inode) {
|
|
InsertHeadList(sd2->list_entry.Blink, &sd->list_entry);
|
|
|
|
if (psd)
|
|
*psd = sd;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
InsertTailList(&context->dirs, &sd->list_entry);
|
|
}
|
|
|
|
if (psd)
|
|
*psd = sd;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static __inline uint16_t find_path_len(send_dir* parent, uint16_t namelen) {
|
|
uint16_t len = namelen;
|
|
|
|
while (parent && parent->namelen > 0) {
|
|
len += parent->namelen + 1;
|
|
parent = parent->parent;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static void find_path(char* path, send_dir* parent, char* name, ULONG namelen) {
|
|
ULONG len = namelen;
|
|
|
|
RtlCopyMemory(path, name, namelen);
|
|
|
|
while (parent && parent->namelen > 0) {
|
|
RtlMoveMemory(path + parent->namelen + 1, path, len);
|
|
RtlCopyMemory(path, parent->name, parent->namelen);
|
|
path[parent->namelen] = '/';
|
|
len += parent->namelen + 1;
|
|
|
|
parent = parent->parent;
|
|
}
|
|
}
|
|
|
|
static void send_add_tlv_path(send_context* context, uint16_t type, send_dir* parent, char* name, uint16_t namelen) {
|
|
uint16_t len = find_path_len(parent, namelen);
|
|
|
|
send_add_tlv(context, type, NULL, len);
|
|
|
|
if (len > 0)
|
|
find_path((char*)&context->data[context->datalen - len], parent, name, namelen);
|
|
}
|
|
|
|
static NTSTATUS found_path(send_context* context, send_dir* parent, char* name, uint16_t namelen) {
|
|
ULONG pos = context->datalen;
|
|
|
|
if (context->lastinode.o) {
|
|
send_command(context, BTRFS_SEND_CMD_RENAME);
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH, context->root_dir, context->lastinode.o->tmpname, (uint16_t)strlen(context->lastinode.o->tmpname));
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH_TO, parent, name, namelen);
|
|
|
|
send_command_finish(context, pos);
|
|
} else {
|
|
send_command(context, BTRFS_SEND_CMD_LINK);
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH, parent, name, namelen);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH_LINK, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
if (context->lastinode.o) {
|
|
uint16_t pathlen;
|
|
|
|
if (context->lastinode.o->sd) {
|
|
if (context->lastinode.o->sd->name)
|
|
ExFreePool(context->lastinode.o->sd->name);
|
|
|
|
context->lastinode.o->sd->name = ExAllocatePoolWithTag(PagedPool, namelen, ALLOC_TAG);
|
|
if (!context->lastinode.o->sd->name) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
RtlCopyMemory(context->lastinode.o->sd->name, name, namelen);
|
|
context->lastinode.o->sd->namelen = namelen;
|
|
context->lastinode.o->sd->parent = parent;
|
|
}
|
|
|
|
if (context->lastinode.path)
|
|
ExFreePool(context->lastinode.path);
|
|
|
|
pathlen = find_path_len(parent, namelen);
|
|
context->lastinode.path = ExAllocatePoolWithTag(PagedPool, pathlen + 1, ALLOC_TAG);
|
|
if (!context->lastinode.path) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
find_path(context->lastinode.path, parent, name, namelen);
|
|
context->lastinode.path[pathlen] = 0;
|
|
|
|
RemoveEntryList(&context->lastinode.o->list_entry);
|
|
ExFreePool(context->lastinode.o);
|
|
|
|
context->lastinode.o = NULL;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static void send_utimes_command_dir(send_context* context, send_dir* sd, BTRFS_TIME* atime, BTRFS_TIME* mtime, BTRFS_TIME* ctime) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_UTIMES);
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH, sd->parent, sd->name, sd->namelen);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_ATIME, atime, sizeof(BTRFS_TIME));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_MTIME, mtime, sizeof(BTRFS_TIME));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_CTIME, ctime, sizeof(BTRFS_TIME));
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
static NTSTATUS find_send_dir(send_context* context, uint64_t dir, uint64_t generation, send_dir** psd, bool* added_dummy) {
|
|
NTSTATUS Status;
|
|
LIST_ENTRY* le;
|
|
char name[64];
|
|
|
|
le = context->dirs.Flink;
|
|
while (le != &context->dirs) {
|
|
send_dir* sd2 = CONTAINING_RECORD(le, send_dir, list_entry);
|
|
|
|
if (sd2->inode > dir)
|
|
break;
|
|
else if (sd2->inode == dir) {
|
|
*psd = sd2;
|
|
|
|
if (added_dummy)
|
|
*added_dummy = false;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
if (dir == SUBVOL_ROOT_INODE) {
|
|
Status = send_add_dir(context, dir, NULL, NULL, 0, false, le, psd);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_add_dir returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (added_dummy)
|
|
*added_dummy = false;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
if (context->parent) {
|
|
KEY searchkey;
|
|
traverse_ptr tp;
|
|
|
|
searchkey.obj_id = dir;
|
|
searchkey.obj_type = TYPE_INODE_REF; // directories should never have an extiref
|
|
searchkey.offset = 0xffffffffffffffff;
|
|
|
|
Status = find_item(context->Vcb, context->parent, &tp, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (tp.item->key.obj_id == searchkey.obj_id && tp.item->key.obj_type == searchkey.obj_type) {
|
|
INODE_REF* ir = (INODE_REF*)tp.item->data;
|
|
send_dir* parent;
|
|
|
|
if (tp.item->size < sizeof(INODE_REF) || tp.item->size < offsetof(INODE_REF, name[0]) + ir->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (tp.item->key.offset == SUBVOL_ROOT_INODE)
|
|
parent = context->root_dir;
|
|
else {
|
|
Status = find_send_dir(context, tp.item->key.offset, generation, &parent, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_send_dir returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
Status = send_add_dir(context, dir, parent, ir->name, ir->n, true, NULL, psd);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_add_dir returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (added_dummy)
|
|
*added_dummy = false;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
}
|
|
|
|
Status = get_orphan_name(context, dir, generation, name);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("get_orphan_name returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
Status = send_add_dir(context, dir, NULL, name, (uint16_t)strlen(name), true, le, psd);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_add_dir returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (added_dummy)
|
|
*added_dummy = true;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS send_inode_ref(send_context* context, traverse_ptr* tp, bool tree2) {
|
|
NTSTATUS Status;
|
|
uint64_t inode = tp ? tp->item->key.obj_id : 0, dir = tp ? tp->item->key.offset : 0;
|
|
LIST_ENTRY* le;
|
|
INODE_REF* ir;
|
|
uint16_t len;
|
|
send_dir* sd = NULL;
|
|
orphan* o2 = NULL;
|
|
|
|
if (inode == dir) // root
|
|
return STATUS_SUCCESS;
|
|
|
|
if (tp->item->size < sizeof(INODE_REF)) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected at least %Iu\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset,
|
|
tp->item->size, sizeof(INODE_REF));
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (dir != SUBVOL_ROOT_INODE) {
|
|
bool added_dummy;
|
|
|
|
Status = find_send_dir(context, dir, context->root->root_item.ctransid, &sd, &added_dummy);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_send_dir returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
// directory has higher inode number than file, so might need to be created
|
|
if (added_dummy) {
|
|
bool found = false;
|
|
|
|
le = context->orphans.Flink;
|
|
while (le != &context->orphans) {
|
|
o2 = CONTAINING_RECORD(le, orphan, list_entry);
|
|
|
|
if (o2->inode == dir) {
|
|
found = true;
|
|
break;
|
|
} else if (o2->inode > dir)
|
|
break;
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
if (!found) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_MKDIR);
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH, NULL, sd->name, sd->namelen);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_INODE, &dir, sizeof(uint64_t));
|
|
|
|
send_command_finish(context, pos);
|
|
|
|
o2 = ExAllocatePoolWithTag(PagedPool, sizeof(orphan), ALLOC_TAG);
|
|
if (!o2) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
o2->inode = dir;
|
|
o2->dir = true;
|
|
memcpy(o2->tmpname, sd->name, sd->namelen);
|
|
o2->tmpname[sd->namelen] = 0;
|
|
o2->sd = sd;
|
|
add_orphan(context, o2);
|
|
}
|
|
}
|
|
} else
|
|
sd = context->root_dir;
|
|
|
|
len = tp->item->size;
|
|
ir = (INODE_REF*)tp->item->data;
|
|
|
|
while (len > 0) {
|
|
ref* r;
|
|
|
|
if (len < sizeof(INODE_REF) || len < offsetof(INODE_REF, name[0]) + ir->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
r = ExAllocatePoolWithTag(PagedPool, offsetof(ref, name[0]) + ir->n, ALLOC_TAG);
|
|
if (!r) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
r->sd = sd;
|
|
r->namelen = ir->n;
|
|
RtlCopyMemory(r->name, ir->name, ir->n);
|
|
|
|
InsertTailList(tree2 ? &context->lastinode.oldrefs : &context->lastinode.refs, &r->list_entry);
|
|
|
|
len -= (uint16_t)offsetof(INODE_REF, name[0]) + ir->n;
|
|
ir = (INODE_REF*)&ir->name[ir->n];
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS send_inode_extref(send_context* context, traverse_ptr* tp, bool tree2) {
|
|
INODE_EXTREF* ier;
|
|
uint16_t len;
|
|
|
|
if (tp->item->size < sizeof(INODE_EXTREF)) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected at least %Iu\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset,
|
|
tp->item->size, sizeof(INODE_EXTREF));
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
len = tp->item->size;
|
|
ier = (INODE_EXTREF*)tp->item->data;
|
|
|
|
while (len > 0) {
|
|
NTSTATUS Status;
|
|
send_dir* sd = NULL;
|
|
orphan* o2 = NULL;
|
|
ref* r;
|
|
|
|
if (len < sizeof(INODE_EXTREF) || len < offsetof(INODE_EXTREF, name[0]) + ier->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (ier->dir != SUBVOL_ROOT_INODE) {
|
|
LIST_ENTRY* le;
|
|
bool added_dummy;
|
|
|
|
Status = find_send_dir(context, ier->dir, context->root->root_item.ctransid, &sd, &added_dummy);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_send_dir returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
// directory has higher inode number than file, so might need to be created
|
|
if (added_dummy) {
|
|
bool found = false;
|
|
|
|
le = context->orphans.Flink;
|
|
while (le != &context->orphans) {
|
|
o2 = CONTAINING_RECORD(le, orphan, list_entry);
|
|
|
|
if (o2->inode == ier->dir) {
|
|
found = true;
|
|
break;
|
|
} else if (o2->inode > ier->dir)
|
|
break;
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
if (!found) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_MKDIR);
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH, NULL, sd->name, sd->namelen);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_INODE, &ier->dir, sizeof(uint64_t));
|
|
|
|
send_command_finish(context, pos);
|
|
|
|
o2 = ExAllocatePoolWithTag(PagedPool, sizeof(orphan), ALLOC_TAG);
|
|
if (!o2) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
o2->inode = ier->dir;
|
|
o2->dir = true;
|
|
memcpy(o2->tmpname, sd->name, sd->namelen);
|
|
o2->tmpname[sd->namelen] = 0;
|
|
o2->sd = sd;
|
|
add_orphan(context, o2);
|
|
}
|
|
}
|
|
} else
|
|
sd = context->root_dir;
|
|
|
|
r = ExAllocatePoolWithTag(PagedPool, offsetof(ref, name[0]) + ier->n, ALLOC_TAG);
|
|
if (!r) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
r->sd = sd;
|
|
r->namelen = ier->n;
|
|
RtlCopyMemory(r->name, ier->name, ier->n);
|
|
|
|
InsertTailList(tree2 ? &context->lastinode.oldrefs : &context->lastinode.refs, &r->list_entry);
|
|
|
|
len -= (uint16_t)offsetof(INODE_EXTREF, name[0]) + ier->n;
|
|
ier = (INODE_EXTREF*)&ier->name[ier->n];
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static void send_subvol_header(send_context* context, root* r, file_ref* fr) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, context->parent ? BTRFS_SEND_CMD_SNAPSHOT : BTRFS_SEND_CMD_SUBVOL);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, fr->dc->utf8.Buffer, fr->dc->utf8.Length);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_UUID, r->root_item.rtransid == 0 ? &r->root_item.uuid : &r->root_item.received_uuid, sizeof(BTRFS_UUID));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_TRANSID, &r->root_item.ctransid, sizeof(uint64_t));
|
|
|
|
if (context->parent) {
|
|
send_add_tlv(context, BTRFS_SEND_TLV_CLONE_UUID,
|
|
context->parent->root_item.rtransid == 0 ? &context->parent->root_item.uuid : &context->parent->root_item.received_uuid, sizeof(BTRFS_UUID));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_CLONE_CTRANSID, &context->parent->root_item.ctransid, sizeof(uint64_t));
|
|
}
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
static void send_chown_command(send_context* context, char* path, uint64_t uid, uint64_t gid) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_CHOWN);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, path, path ? (uint16_t)strlen(path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_UID, &uid, sizeof(uint64_t));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_GID, &gid, sizeof(uint64_t));
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
static void send_chmod_command(send_context* context, char* path, uint64_t mode) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_CHMOD);
|
|
|
|
mode &= 07777;
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, path, path ? (uint16_t)strlen(path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_MODE, &mode, sizeof(uint64_t));
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
static void send_utimes_command(send_context* context, char* path, BTRFS_TIME* atime, BTRFS_TIME* mtime, BTRFS_TIME* ctime) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_UTIMES);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, path, path ? (uint16_t)strlen(path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_ATIME, atime, sizeof(BTRFS_TIME));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_MTIME, mtime, sizeof(BTRFS_TIME));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_CTIME, ctime, sizeof(BTRFS_TIME));
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
static void send_truncate_command(send_context* context, char* path, uint64_t size) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_TRUNCATE);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, path, path ? (uint16_t)strlen(path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_SIZE, &size, sizeof(uint64_t));
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
static NTSTATUS send_unlink_command(send_context* context, send_dir* parent, uint16_t namelen, char* name) {
|
|
ULONG pos = context->datalen;
|
|
uint16_t pathlen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_UNLINK);
|
|
|
|
pathlen = find_path_len(parent, namelen);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, NULL, pathlen);
|
|
|
|
find_path((char*)&context->data[context->datalen - pathlen], parent, name, namelen);
|
|
|
|
send_command_finish(context, pos);
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static void send_rmdir_command(send_context* context, uint16_t pathlen, char* path) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_RMDIR);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, path, pathlen);
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
static NTSTATUS get_dir_last_child(send_context* context, uint64_t* last_inode) {
|
|
NTSTATUS Status;
|
|
KEY searchkey;
|
|
traverse_ptr tp;
|
|
|
|
*last_inode = 0;
|
|
|
|
searchkey.obj_id = context->lastinode.inode;
|
|
searchkey.obj_type = TYPE_DIR_INDEX;
|
|
searchkey.offset = 2;
|
|
|
|
Status = find_item(context->Vcb, context->parent, &tp, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
do {
|
|
traverse_ptr next_tp;
|
|
|
|
if (tp.item->key.obj_id == searchkey.obj_id && tp.item->key.obj_type == searchkey.obj_type) {
|
|
DIR_ITEM* di = (DIR_ITEM*)tp.item->data;
|
|
|
|
if (tp.item->size < sizeof(DIR_ITEM) || tp.item->size < offsetof(DIR_ITEM, name[0]) + di->m + di->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (di->key.obj_type == TYPE_INODE_ITEM)
|
|
*last_inode = max(*last_inode, di->key.obj_id);
|
|
} else
|
|
break;
|
|
|
|
if (find_next_item(context->Vcb, &tp, &next_tp, false, NULL))
|
|
tp = next_tp;
|
|
else
|
|
break;
|
|
} while (true);
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS add_pending_rmdir(send_context* context, uint64_t last_inode) {
|
|
pending_rmdir* pr;
|
|
LIST_ENTRY* le;
|
|
|
|
pr = ExAllocatePoolWithTag(PagedPool, sizeof(pending_rmdir), ALLOC_TAG);
|
|
if (!pr) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
pr->sd = context->lastinode.sd;
|
|
pr->last_child_inode = last_inode;
|
|
|
|
le = context->pending_rmdirs.Flink;
|
|
while (le != &context->pending_rmdirs) {
|
|
pending_rmdir* pr2 = CONTAINING_RECORD(le, pending_rmdir, list_entry);
|
|
|
|
if (pr2->last_child_inode > pr->last_child_inode) {
|
|
InsertHeadList(pr2->list_entry.Blink, &pr->list_entry);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
InsertTailList(&context->pending_rmdirs, &pr->list_entry);
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS look_for_collision(send_context* context, send_dir* sd, char* name, ULONG namelen, uint64_t* inode, bool* dir) {
|
|
NTSTATUS Status;
|
|
KEY searchkey;
|
|
traverse_ptr tp;
|
|
DIR_ITEM* di;
|
|
uint16_t len;
|
|
|
|
searchkey.obj_id = sd->inode;
|
|
searchkey.obj_type = TYPE_DIR_ITEM;
|
|
searchkey.offset = calc_crc32c(0xfffffffe, (uint8_t*)name, namelen);
|
|
|
|
Status = find_item(context->Vcb, context->parent, &tp, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (keycmp(tp.item->key, searchkey))
|
|
return STATUS_SUCCESS;
|
|
|
|
di = (DIR_ITEM*)tp.item->data;
|
|
len = tp.item->size;
|
|
|
|
do {
|
|
if (len < sizeof(DIR_ITEM) || len < offsetof(DIR_ITEM, name[0]) + di->m + di->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (di->n == namelen && RtlCompareMemory(di->name, name, namelen) == namelen) {
|
|
*inode = di->key.obj_type == TYPE_INODE_ITEM ? di->key.obj_id : 0;
|
|
*dir = di->type == BTRFS_TYPE_DIRECTORY ? true: false;
|
|
return STATUS_OBJECT_NAME_COLLISION;
|
|
}
|
|
|
|
di = (DIR_ITEM*)&di->name[di->m + di->n];
|
|
len -= (uint16_t)offsetof(DIR_ITEM, name[0]) + di->m + di->n;
|
|
} while (len > 0);
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS make_file_orphan(send_context* context, uint64_t inode, bool dir, uint64_t generation, ref* r) {
|
|
NTSTATUS Status;
|
|
ULONG pos = context->datalen;
|
|
send_dir* sd = NULL;
|
|
orphan* o;
|
|
LIST_ENTRY* le;
|
|
char name[64];
|
|
|
|
if (!dir) {
|
|
deleted_child* dc;
|
|
|
|
dc = ExAllocatePoolWithTag(PagedPool, offsetof(deleted_child, name[0]) + r->namelen, ALLOC_TAG);
|
|
if (!dc) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
dc->namelen = r->namelen;
|
|
RtlCopyMemory(dc->name, r->name, r->namelen);
|
|
InsertTailList(&r->sd->deleted_children, &dc->list_entry);
|
|
}
|
|
|
|
le = context->orphans.Flink;
|
|
while (le != &context->orphans) {
|
|
orphan* o2 = CONTAINING_RECORD(le, orphan, list_entry);
|
|
|
|
if (o2->inode == inode) {
|
|
send_command(context, BTRFS_SEND_CMD_UNLINK);
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH, r->sd, r->name, r->namelen);
|
|
|
|
send_command_finish(context, pos);
|
|
|
|
return STATUS_SUCCESS;
|
|
} else if (o2->inode > inode)
|
|
break;
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
Status = get_orphan_name(context, inode, generation, name);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("get_orphan_name returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (dir) {
|
|
Status = find_send_dir(context, inode, generation, &sd, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_send_dir returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
sd->dummy = true;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_RENAME);
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH, r->sd, r->name, r->namelen);
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH_TO, context->root_dir, name, (uint16_t)strlen(name));
|
|
|
|
send_command_finish(context, pos);
|
|
|
|
if (sd->name)
|
|
ExFreePool(sd->name);
|
|
|
|
sd->namelen = (uint16_t)strlen(name);
|
|
sd->name = ExAllocatePoolWithTag(PagedPool, sd->namelen, ALLOC_TAG);
|
|
if (!sd->name) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
RtlCopyMemory(sd->name, name, sd->namelen);
|
|
sd->parent = context->root_dir;
|
|
} else {
|
|
send_command(context, BTRFS_SEND_CMD_RENAME);
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH, r->sd, r->name, r->namelen);
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH_TO, context->root_dir, name, (uint16_t)strlen(name));
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
o = ExAllocatePoolWithTag(PagedPool, sizeof(orphan), ALLOC_TAG);
|
|
if (!o) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
o->inode = inode;
|
|
o->dir = true;
|
|
strcpy(o->tmpname, name);
|
|
o->sd = sd;
|
|
add_orphan(context, o);
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS flush_refs(send_context* context, traverse_ptr* tp1, traverse_ptr* tp2) {
|
|
NTSTATUS Status;
|
|
LIST_ENTRY* le;
|
|
ref *nameref = NULL, *nameref2 = NULL;
|
|
|
|
if (context->lastinode.mode & __S_IFDIR) { // directory
|
|
ref* r = IsListEmpty(&context->lastinode.refs) ? NULL : CONTAINING_RECORD(context->lastinode.refs.Flink, ref, list_entry);
|
|
ref* or = IsListEmpty(&context->lastinode.oldrefs) ? NULL : CONTAINING_RECORD(context->lastinode.oldrefs.Flink, ref, list_entry);
|
|
|
|
if (or && !context->lastinode.o) {
|
|
ULONG len = find_path_len(or->sd, or->namelen);
|
|
|
|
context->lastinode.path = ExAllocatePoolWithTag(PagedPool, len + 1, ALLOC_TAG);
|
|
if (!context->lastinode.path) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
find_path(context->lastinode.path, or->sd, or->name, or->namelen);
|
|
context->lastinode.path[len] = 0;
|
|
|
|
if (!context->lastinode.sd) {
|
|
Status = find_send_dir(context, context->lastinode.inode, context->lastinode.gen, &context->lastinode.sd, false);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_send_dir returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (r && or) {
|
|
uint64_t inode;
|
|
bool dir;
|
|
|
|
Status = look_for_collision(context, r->sd, r->name, r->namelen, &inode, &dir);
|
|
if (!NT_SUCCESS(Status) && Status != STATUS_OBJECT_NAME_COLLISION) {
|
|
ERR("look_for_collision returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (Status == STATUS_OBJECT_NAME_COLLISION && inode > context->lastinode.inode) {
|
|
Status = make_file_orphan(context, inode, dir, context->parent->root_item.ctransid, r);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("make_file_orphan returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
if (context->lastinode.o) {
|
|
Status = found_path(context, r->sd, r->name, r->namelen);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("found_path returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (!r->sd->dummy)
|
|
send_utimes_command_dir(context, r->sd, &r->sd->atime, &r->sd->mtime, &r->sd->ctime);
|
|
} else if (r->sd != or->sd || r->namelen != or->namelen || RtlCompareMemory(r->name, or->name, r->namelen) != r->namelen) { // moved or renamed
|
|
ULONG pos = context->datalen, len;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_RENAME);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, (uint16_t)strlen(context->lastinode.path));
|
|
|
|
send_add_tlv_path(context, BTRFS_SEND_TLV_PATH_TO, r->sd, r->name, r->namelen);
|
|
|
|
send_command_finish(context, pos);
|
|
|
|
if (!r->sd->dummy)
|
|
send_utimes_command_dir(context, r->sd, &r->sd->atime, &r->sd->mtime, &r->sd->ctime);
|
|
|
|
if (context->lastinode.sd->name)
|
|
ExFreePool(context->lastinode.sd->name);
|
|
|
|
context->lastinode.sd->name = ExAllocatePoolWithTag(PagedPool, r->namelen, ALLOC_TAG);
|
|
if (!context->lastinode.sd->name) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
RtlCopyMemory(context->lastinode.sd->name, r->name, r->namelen);
|
|
context->lastinode.sd->parent = r->sd;
|
|
|
|
if (context->lastinode.path)
|
|
ExFreePool(context->lastinode.path);
|
|
|
|
len = find_path_len(r->sd, r->namelen);
|
|
context->lastinode.path = ExAllocatePoolWithTag(PagedPool, len + 1, ALLOC_TAG);
|
|
if (!context->lastinode.path) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
find_path(context->lastinode.path, r->sd, r->name, r->namelen);
|
|
context->lastinode.path[len] = 0;
|
|
}
|
|
} else if (r && !or) { // new
|
|
Status = found_path(context, r->sd, r->name, r->namelen);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("found_path returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (!r->sd->dummy)
|
|
send_utimes_command_dir(context, r->sd, &r->sd->atime, &r->sd->mtime, &r->sd->ctime);
|
|
} else { // deleted
|
|
uint64_t last_inode;
|
|
|
|
Status = get_dir_last_child(context, &last_inode);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("get_dir_last_child returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (last_inode <= context->lastinode.inode) {
|
|
send_rmdir_command(context, (uint16_t)strlen(context->lastinode.path), context->lastinode.path);
|
|
|
|
if (!or->sd->dummy)
|
|
send_utimes_command_dir(context, or->sd, &or->sd->atime, &or->sd->mtime, &or->sd->ctime);
|
|
} else {
|
|
char name[64];
|
|
ULONG pos = context->datalen;
|
|
|
|
Status = get_orphan_name(context, context->lastinode.inode, context->lastinode.gen, name);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("get_orphan_name returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
send_command(context, BTRFS_SEND_CMD_RENAME);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, (uint16_t)strlen(context->lastinode.path));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH_TO, name, (uint16_t)strlen(name));
|
|
send_command_finish(context, pos);
|
|
|
|
if (context->lastinode.sd->name)
|
|
ExFreePool(context->lastinode.sd->name);
|
|
|
|
context->lastinode.sd->name = ExAllocatePoolWithTag(PagedPool, strlen(name), ALLOC_TAG);
|
|
if (!context->lastinode.sd->name) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
RtlCopyMemory(context->lastinode.sd->name, name, strlen(name));
|
|
context->lastinode.sd->namelen = (uint16_t)strlen(name);
|
|
context->lastinode.sd->dummy = true;
|
|
context->lastinode.sd->parent = NULL;
|
|
|
|
send_utimes_command(context, NULL, &context->root_dir->atime, &context->root_dir->mtime, &context->root_dir->ctime);
|
|
|
|
Status = add_pending_rmdir(context, last_inode);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("add_pending_rmdir returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
}
|
|
}
|
|
|
|
while (!IsListEmpty(&context->lastinode.refs)) {
|
|
r = CONTAINING_RECORD(RemoveHeadList(&context->lastinode.refs), ref, list_entry);
|
|
ExFreePool(r);
|
|
}
|
|
|
|
while (!IsListEmpty(&context->lastinode.oldrefs)) {
|
|
or = CONTAINING_RECORD(RemoveHeadList(&context->lastinode.oldrefs), ref, list_entry);
|
|
ExFreePool(or);
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
} else {
|
|
if (!IsListEmpty(&context->lastinode.oldrefs)) {
|
|
ref* or = CONTAINING_RECORD(context->lastinode.oldrefs.Flink, ref, list_entry);
|
|
ULONG len = find_path_len(or->sd, or->namelen);
|
|
|
|
context->lastinode.path = ExAllocatePoolWithTag(PagedPool, len + 1, ALLOC_TAG);
|
|
if (!context->lastinode.path) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
find_path(context->lastinode.path, or->sd, or->name, or->namelen);
|
|
context->lastinode.path[len] = 0;
|
|
nameref = or;
|
|
}
|
|
|
|
// remove unchanged refs
|
|
le = context->lastinode.oldrefs.Flink;
|
|
while (le != &context->lastinode.oldrefs) {
|
|
ref* or = CONTAINING_RECORD(le, ref, list_entry);
|
|
LIST_ENTRY* le2;
|
|
bool matched = false;
|
|
|
|
le2 = context->lastinode.refs.Flink;
|
|
while (le2 != &context->lastinode.refs) {
|
|
ref* r = CONTAINING_RECORD(le2, ref, list_entry);
|
|
|
|
if (r->sd == or->sd && r->namelen == or->namelen && RtlCompareMemory(r->name, or->name, r->namelen) == r->namelen) {
|
|
RemoveEntryList(&r->list_entry);
|
|
ExFreePool(r);
|
|
matched = true;
|
|
break;
|
|
}
|
|
|
|
le2 = le2->Flink;
|
|
}
|
|
|
|
if (matched) {
|
|
le = le->Flink;
|
|
RemoveEntryList(&or->list_entry);
|
|
ExFreePool(or);
|
|
continue;
|
|
}
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
while (!IsListEmpty(&context->lastinode.refs)) {
|
|
ref* r = CONTAINING_RECORD(RemoveHeadList(&context->lastinode.refs), ref, list_entry);
|
|
uint64_t inode;
|
|
bool dir;
|
|
|
|
if (context->parent) {
|
|
Status = look_for_collision(context, r->sd, r->name, r->namelen, &inode, &dir);
|
|
if (!NT_SUCCESS(Status) && Status != STATUS_OBJECT_NAME_COLLISION) {
|
|
ERR("look_for_collision returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (Status == STATUS_OBJECT_NAME_COLLISION && inode > context->lastinode.inode) {
|
|
Status = make_file_orphan(context, inode, dir, context->lastinode.gen, r);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("make_file_orphan returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (context->datalen > SEND_BUFFER_LENGTH) {
|
|
Status = wait_for_flush(context, tp1, tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("wait_for_flush returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (context->send->cancelling)
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
Status = found_path(context, r->sd, r->name, r->namelen);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("found_path returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (!r->sd->dummy)
|
|
send_utimes_command_dir(context, r->sd, &r->sd->atime, &r->sd->mtime, &r->sd->ctime);
|
|
|
|
if (nameref && !nameref2)
|
|
nameref2 = r;
|
|
else
|
|
ExFreePool(r);
|
|
}
|
|
|
|
while (!IsListEmpty(&context->lastinode.oldrefs)) {
|
|
ref* or = CONTAINING_RECORD(RemoveHeadList(&context->lastinode.oldrefs), ref, list_entry);
|
|
bool deleted = false;
|
|
|
|
le = or->sd->deleted_children.Flink;
|
|
while (le != &or->sd->deleted_children) {
|
|
deleted_child* dc = CONTAINING_RECORD(le, deleted_child, list_entry);
|
|
|
|
if (dc->namelen == or->namelen && RtlCompareMemory(dc->name, or->name, or->namelen) == or->namelen) {
|
|
RemoveEntryList(&dc->list_entry);
|
|
ExFreePool(dc);
|
|
deleted = true;
|
|
break;
|
|
}
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
if (!deleted) {
|
|
if (context->datalen > SEND_BUFFER_LENGTH) {
|
|
Status = wait_for_flush(context, tp1, tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("wait_for_flush returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (context->send->cancelling)
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
Status = send_unlink_command(context, or->sd, or->namelen, or->name);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_unlink_command returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (!or->sd->dummy)
|
|
send_utimes_command_dir(context, or->sd, &or->sd->atime, &or->sd->mtime, &or->sd->ctime);
|
|
}
|
|
|
|
if (or == nameref && nameref2) {
|
|
uint16_t len = find_path_len(nameref2->sd, nameref2->namelen);
|
|
|
|
if (context->lastinode.path)
|
|
ExFreePool(context->lastinode.path);
|
|
|
|
context->lastinode.path = ExAllocatePoolWithTag(PagedPool, len + 1, ALLOC_TAG);
|
|
if (!context->lastinode.path) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
find_path(context->lastinode.path, nameref2->sd, nameref2->name, nameref2->namelen);
|
|
context->lastinode.path[len] = 0;
|
|
|
|
ExFreePool(nameref2);
|
|
}
|
|
|
|
ExFreePool(or);
|
|
}
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS wait_for_flush(send_context* context, traverse_ptr* tp1, traverse_ptr* tp2) {
|
|
NTSTATUS Status;
|
|
KEY key1, key2;
|
|
|
|
if (tp1)
|
|
key1 = tp1->item->key;
|
|
|
|
if (tp2)
|
|
key2 = tp2->item->key;
|
|
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
|
|
KeClearEvent(&context->send->cleared_event);
|
|
KeSetEvent(&context->buffer_event, 0, true);
|
|
KeWaitForSingleObject(&context->send->cleared_event, Executive, KernelMode, false, NULL);
|
|
|
|
ExAcquireResourceSharedLite(&context->Vcb->tree_lock, true);
|
|
|
|
if (context->send->cancelling)
|
|
return STATUS_SUCCESS;
|
|
|
|
if (tp1) {
|
|
Status = find_item(context->Vcb, context->root, tp1, &key1, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (keycmp(tp1->item->key, key1)) {
|
|
ERR("readonly subvolume changed\n");
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
}
|
|
|
|
if (tp2) {
|
|
Status = find_item(context->Vcb, context->parent, tp2, &key2, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (keycmp(tp2->item->key, key2)) {
|
|
ERR("readonly subvolume changed\n");
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS add_ext_holes(device_extension* Vcb, LIST_ENTRY* exts, uint64_t size) {
|
|
uint64_t lastoff = 0;
|
|
LIST_ENTRY* le;
|
|
|
|
le = exts->Flink;
|
|
while (le != exts) {
|
|
send_ext* ext = CONTAINING_RECORD(le, send_ext, list_entry);
|
|
|
|
if (ext->offset > lastoff) {
|
|
send_ext* ext2 = ExAllocatePoolWithTag(PagedPool, offsetof(send_ext, data.data) + sizeof(EXTENT_DATA2), ALLOC_TAG);
|
|
EXTENT_DATA2* ed2;
|
|
|
|
if (!ext2) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
ed2 = (EXTENT_DATA2*)ext2->data.data;
|
|
|
|
ext2->offset = lastoff;
|
|
ext2->datalen = offsetof(EXTENT_DATA, data) + sizeof(EXTENT_DATA2);
|
|
ext2->data.decoded_size = ed2->num_bytes = ext->offset - lastoff;
|
|
ext2->data.type = EXTENT_TYPE_REGULAR;
|
|
ed2->address = ed2->size = ed2->offset = 0;
|
|
|
|
InsertHeadList(le->Blink, &ext2->list_entry);
|
|
}
|
|
|
|
if (ext->data.type == EXTENT_TYPE_INLINE)
|
|
lastoff = ext->offset + ext->data.decoded_size;
|
|
else {
|
|
EXTENT_DATA2* ed2 = (EXTENT_DATA2*)ext->data.data;
|
|
lastoff = ext->offset + ed2->num_bytes;
|
|
}
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
if (size > lastoff) {
|
|
send_ext* ext2 = ExAllocatePoolWithTag(PagedPool, offsetof(send_ext, data.data) + sizeof(EXTENT_DATA2), ALLOC_TAG);
|
|
EXTENT_DATA2* ed2;
|
|
|
|
if (!ext2) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
ed2 = (EXTENT_DATA2*)ext2->data.data;
|
|
|
|
ext2->offset = lastoff;
|
|
ext2->datalen = offsetof(EXTENT_DATA, data) + sizeof(EXTENT_DATA2);
|
|
ext2->data.decoded_size = ed2->num_bytes = sector_align(size - lastoff, Vcb->superblock.sector_size);
|
|
ext2->data.type = EXTENT_TYPE_REGULAR;
|
|
ed2->address = ed2->size = ed2->offset = 0;
|
|
|
|
InsertTailList(exts, &ext2->list_entry);
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS divide_ext(send_ext* ext, uint64_t len, bool trunc) {
|
|
send_ext* ext2;
|
|
EXTENT_DATA2 *ed2a, *ed2b;
|
|
|
|
if (ext->data.type == EXTENT_TYPE_INLINE) {
|
|
if (!trunc) {
|
|
ext2 = ExAllocatePoolWithTag(PagedPool, (ULONG)(offsetof(send_ext, data.data) + ext->data.decoded_size - len), ALLOC_TAG);
|
|
|
|
if (!ext2) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
ext2->offset = ext->offset + len;
|
|
ext2->datalen = (ULONG)(ext->data.decoded_size - len);
|
|
ext2->data.decoded_size = ext->data.decoded_size - len;
|
|
ext2->data.compression = ext->data.compression;
|
|
ext2->data.encryption = ext->data.encryption;
|
|
ext2->data.encoding = ext->data.encoding;
|
|
ext2->data.type = ext->data.type;
|
|
RtlCopyMemory(ext2->data.data, ext->data.data + len, (ULONG)(ext->data.decoded_size - len));
|
|
|
|
InsertHeadList(&ext->list_entry, &ext2->list_entry);
|
|
}
|
|
|
|
ext->data.decoded_size = len;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
ed2a = (EXTENT_DATA2*)ext->data.data;
|
|
|
|
if (!trunc) {
|
|
ext2 = ExAllocatePoolWithTag(PagedPool, offsetof(send_ext, data.data) + sizeof(EXTENT_DATA2), ALLOC_TAG);
|
|
|
|
if (!ext2) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
ed2b = (EXTENT_DATA2*)ext2->data.data;
|
|
|
|
ext2->offset = ext->offset + len;
|
|
ext2->datalen = offsetof(EXTENT_DATA, data) + sizeof(EXTENT_DATA2);
|
|
|
|
ext2->data.compression = ext->data.compression;
|
|
ext2->data.encryption = ext->data.encryption;
|
|
ext2->data.encoding = ext->data.encoding;
|
|
ext2->data.type = ext->data.type;
|
|
ed2b->num_bytes = ed2a->num_bytes - len;
|
|
|
|
if (ed2a->size == 0) {
|
|
ext2->data.decoded_size = ed2b->num_bytes;
|
|
ext->data.decoded_size = len;
|
|
|
|
ed2b->address = ed2b->size = ed2b->offset = 0;
|
|
} else {
|
|
ext2->data.decoded_size = ext->data.decoded_size;
|
|
|
|
ed2b->address = ed2a->address;
|
|
ed2b->size = ed2a->size;
|
|
ed2b->offset = ed2a->offset + len;
|
|
}
|
|
|
|
InsertHeadList(&ext->list_entry, &ext2->list_entry);
|
|
}
|
|
|
|
ed2a->num_bytes = len;
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS sync_ext_cutoff_points(send_context* context) {
|
|
NTSTATUS Status;
|
|
send_ext *ext1, *ext2;
|
|
|
|
ext1 = CONTAINING_RECORD(context->lastinode.exts.Flink, send_ext, list_entry);
|
|
ext2 = CONTAINING_RECORD(context->lastinode.oldexts.Flink, send_ext, list_entry);
|
|
|
|
do {
|
|
uint64_t len1, len2;
|
|
EXTENT_DATA2 *ed2a, *ed2b;
|
|
|
|
ed2a = ext1->data.type == EXTENT_TYPE_INLINE ? NULL : (EXTENT_DATA2*)ext1->data.data;
|
|
ed2b = ext2->data.type == EXTENT_TYPE_INLINE ? NULL : (EXTENT_DATA2*)ext2->data.data;
|
|
|
|
len1 = ed2a ? ed2a->num_bytes : ext1->data.decoded_size;
|
|
len2 = ed2b ? ed2b->num_bytes : ext2->data.decoded_size;
|
|
|
|
if (len1 < len2) {
|
|
Status = divide_ext(ext2, len1, false);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("divide_ext returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
} else if (len2 < len1) {
|
|
Status = divide_ext(ext1, len2, false);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("divide_ext returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
if (ext1->list_entry.Flink == &context->lastinode.exts || ext2->list_entry.Flink == &context->lastinode.oldexts)
|
|
break;
|
|
|
|
ext1 = CONTAINING_RECORD(ext1->list_entry.Flink, send_ext, list_entry);
|
|
ext2 = CONTAINING_RECORD(ext2->list_entry.Flink, send_ext, list_entry);
|
|
} while (true);
|
|
|
|
ext1 = CONTAINING_RECORD(context->lastinode.exts.Blink, send_ext, list_entry);
|
|
ext2 = CONTAINING_RECORD(context->lastinode.oldexts.Blink, send_ext, list_entry);
|
|
|
|
Status = divide_ext(ext1, context->lastinode.size - ext1->offset, true);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("divide_ext returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
Status = divide_ext(ext2, context->lastinode.size - ext2->offset, true);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("divide_ext returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static bool send_add_tlv_clone_path(send_context* context, root* r, uint64_t inode) {
|
|
NTSTATUS Status;
|
|
KEY searchkey;
|
|
traverse_ptr tp;
|
|
uint16_t len = 0;
|
|
uint64_t num;
|
|
uint8_t* ptr;
|
|
|
|
num = inode;
|
|
|
|
while (num != SUBVOL_ROOT_INODE) {
|
|
searchkey.obj_id = num;
|
|
searchkey.obj_type = TYPE_INODE_EXTREF;
|
|
searchkey.offset = 0xffffffffffffffff;
|
|
|
|
Status = find_item(context->Vcb, r, &tp, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return false;
|
|
}
|
|
|
|
if (tp.item->key.obj_id != searchkey.obj_id || (tp.item->key.obj_type != TYPE_INODE_REF && tp.item->key.obj_type != TYPE_INODE_EXTREF)) {
|
|
ERR("could not find INODE_REF for inode %I64x\n", searchkey.obj_id);
|
|
return false;
|
|
}
|
|
|
|
if (len > 0)
|
|
len++;
|
|
|
|
if (tp.item->key.obj_type == TYPE_INODE_REF) {
|
|
INODE_REF* ir = (INODE_REF*)tp.item->data;
|
|
|
|
if (tp.item->size < sizeof(INODE_REF) || tp.item->size < offsetof(INODE_REF, name[0]) + ir->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset);
|
|
return false;
|
|
}
|
|
|
|
len += ir->n;
|
|
num = tp.item->key.offset;
|
|
} else {
|
|
INODE_EXTREF* ier = (INODE_EXTREF*)tp.item->data;
|
|
|
|
if (tp.item->size < sizeof(INODE_EXTREF) || tp.item->size < offsetof(INODE_EXTREF, name[0]) + ier->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset);
|
|
return false;
|
|
}
|
|
|
|
len += ier->n;
|
|
num = ier->dir;
|
|
}
|
|
}
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_CLONE_PATH, NULL, len);
|
|
ptr = &context->data[context->datalen];
|
|
|
|
num = inode;
|
|
|
|
while (num != SUBVOL_ROOT_INODE) {
|
|
searchkey.obj_id = num;
|
|
searchkey.obj_type = TYPE_INODE_EXTREF;
|
|
searchkey.offset = 0xffffffffffffffff;
|
|
|
|
Status = find_item(context->Vcb, r, &tp, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return false;
|
|
}
|
|
|
|
if (tp.item->key.obj_id != searchkey.obj_id || (tp.item->key.obj_type != TYPE_INODE_REF && tp.item->key.obj_type != TYPE_INODE_EXTREF)) {
|
|
ERR("could not find INODE_REF for inode %I64x\n", searchkey.obj_id);
|
|
return false;
|
|
}
|
|
|
|
if (num != inode) {
|
|
ptr--;
|
|
*ptr = '/';
|
|
}
|
|
|
|
if (tp.item->key.obj_type == TYPE_INODE_REF) {
|
|
INODE_REF* ir = (INODE_REF*)tp.item->data;
|
|
|
|
RtlCopyMemory(ptr - ir->n, ir->name, ir->n);
|
|
ptr -= ir->n;
|
|
num = tp.item->key.offset;
|
|
} else {
|
|
INODE_EXTREF* ier = (INODE_EXTREF*)tp.item->data;
|
|
|
|
RtlCopyMemory(ptr - ier->n, ier->name, ier->n);
|
|
ptr -= ier->n;
|
|
num = ier->dir;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool try_clone_edr(send_context* context, send_ext* se, EXTENT_DATA_REF* edr) {
|
|
NTSTATUS Status;
|
|
root* r = NULL;
|
|
KEY searchkey;
|
|
traverse_ptr tp;
|
|
EXTENT_DATA2* seed2 = (EXTENT_DATA2*)se->data.data;
|
|
|
|
if (context->parent && edr->root == context->parent->id)
|
|
r = context->parent;
|
|
|
|
if (!r && context->num_clones > 0) {
|
|
ULONG i;
|
|
|
|
for (i = 0; i < context->num_clones; i++) {
|
|
if (context->clones[i]->id == edr->root && context->clones[i] != context->root) {
|
|
r = context->clones[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!r)
|
|
return false;
|
|
|
|
searchkey.obj_id = edr->objid;
|
|
searchkey.obj_type = TYPE_EXTENT_DATA;
|
|
searchkey.offset = 0;
|
|
|
|
Status = find_item(context->Vcb, r, &tp, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return false;
|
|
}
|
|
|
|
while (true) {
|
|
traverse_ptr next_tp;
|
|
|
|
if (tp.item->key.obj_id == searchkey.obj_id && tp.item->key.obj_type == searchkey.obj_type) {
|
|
if (tp.item->size < sizeof(EXTENT_DATA))
|
|
ERR("(%I64x,%x,%I64x) has size %u, not at least %Iu as expected\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset, tp.item->size, sizeof(EXTENT_DATA));
|
|
else {
|
|
EXTENT_DATA* ed = (EXTENT_DATA*)tp.item->data;
|
|
|
|
if (ed->type == EXTENT_TYPE_REGULAR) {
|
|
if (tp.item->size < offsetof(EXTENT_DATA, data[0]) + sizeof(EXTENT_DATA2))
|
|
ERR("(%I64x,%x,%I64x) has size %u, not %Iu as expected\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset,
|
|
tp.item->size, offsetof(EXTENT_DATA, data[0]) + sizeof(EXTENT_DATA2));
|
|
else {
|
|
EXTENT_DATA2* ed2 = (EXTENT_DATA2*)ed->data;
|
|
|
|
if (ed2->address == seed2->address && ed2->size == seed2->size && seed2->offset <= ed2->offset && seed2->offset + seed2->num_bytes >= ed2->offset + ed2->num_bytes) {
|
|
uint64_t clone_offset = tp.item->key.offset + ed2->offset - seed2->offset;
|
|
uint64_t clone_len = min(context->lastinode.size - se->offset, ed2->num_bytes);
|
|
|
|
if (clone_offset % context->Vcb->superblock.sector_size == 0 && clone_len % context->Vcb->superblock.sector_size == 0) {
|
|
ULONG pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_CLONE);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_OFFSET, &se->offset, sizeof(uint64_t));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_CLONE_LENGTH, &clone_len, sizeof(uint64_t));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_CLONE_UUID, r->root_item.rtransid == 0 ? &r->root_item.uuid : &r->root_item.received_uuid, sizeof(BTRFS_UUID));
|
|
send_add_tlv(context, BTRFS_SEND_TLV_CLONE_CTRANSID, &r->root_item.ctransid, sizeof(uint64_t));
|
|
|
|
if (!send_add_tlv_clone_path(context, r, tp.item->key.obj_id))
|
|
context->datalen = pos;
|
|
else {
|
|
send_add_tlv(context, BTRFS_SEND_TLV_CLONE_OFFSET, &clone_offset, sizeof(uint64_t));
|
|
|
|
send_command_finish(context, pos);
|
|
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (tp.item->key.obj_id > searchkey.obj_id || (tp.item->key.obj_id == searchkey.obj_id && tp.item->key.obj_type > searchkey.obj_type))
|
|
break;
|
|
|
|
if (find_next_item(context->Vcb, &tp, &next_tp, false, NULL))
|
|
tp = next_tp;
|
|
else
|
|
break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool try_clone(send_context* context, send_ext* se) {
|
|
NTSTATUS Status;
|
|
KEY searchkey;
|
|
traverse_ptr tp;
|
|
EXTENT_DATA2* ed2 = (EXTENT_DATA2*)se->data.data;
|
|
EXTENT_ITEM* ei;
|
|
uint64_t rc = 0;
|
|
|
|
searchkey.obj_id = ed2->address;
|
|
searchkey.obj_type = TYPE_EXTENT_ITEM;
|
|
searchkey.offset = ed2->size;
|
|
|
|
Status = find_item(context->Vcb, context->Vcb->extent_root, &tp, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return false;
|
|
}
|
|
|
|
if (keycmp(tp.item->key, searchkey)) {
|
|
ERR("(%I64x,%x,%I64x) not found\n", searchkey.obj_id, searchkey.obj_type, searchkey.offset);
|
|
return false;
|
|
}
|
|
|
|
if (tp.item->size < sizeof(EXTENT_ITEM)) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected at least %Iu\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset, tp.item->size, sizeof(EXTENT_ITEM));
|
|
return false;
|
|
}
|
|
|
|
ei = (EXTENT_ITEM*)tp.item->data;
|
|
|
|
if (tp.item->size > sizeof(EXTENT_ITEM)) {
|
|
uint32_t len = tp.item->size - sizeof(EXTENT_ITEM);
|
|
uint8_t* ptr = (uint8_t*)&ei[1];
|
|
|
|
while (len > 0) {
|
|
uint8_t secttype = *ptr;
|
|
ULONG sectlen = get_extent_data_len(secttype);
|
|
uint64_t sectcount = get_extent_data_refcount(secttype, ptr + sizeof(uint8_t));
|
|
|
|
len--;
|
|
|
|
if (sectlen > len) {
|
|
ERR("(%I64x,%x,%I64x): %x bytes left, expecting at least %lx\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset, len, sectlen);
|
|
return false;
|
|
}
|
|
|
|
if (sectlen == 0) {
|
|
ERR("(%I64x,%x,%I64x): unrecognized extent type %x\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset, secttype);
|
|
return false;
|
|
}
|
|
|
|
rc += sectcount;
|
|
|
|
if (secttype == TYPE_EXTENT_DATA_REF) {
|
|
EXTENT_DATA_REF* sectedr = (EXTENT_DATA_REF*)(ptr + sizeof(uint8_t));
|
|
|
|
if (try_clone_edr(context, se, sectedr))
|
|
return true;
|
|
}
|
|
|
|
len -= sectlen;
|
|
ptr += sizeof(uint8_t) + sectlen;
|
|
}
|
|
}
|
|
|
|
if (rc >= ei->refcount)
|
|
return false;
|
|
|
|
searchkey.obj_type = TYPE_EXTENT_DATA_REF;
|
|
searchkey.offset = 0;
|
|
|
|
Status = find_item(context->Vcb, context->Vcb->extent_root, &tp, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
return false;
|
|
}
|
|
|
|
while (true) {
|
|
traverse_ptr next_tp;
|
|
|
|
if (tp.item->key.obj_id == searchkey.obj_id && tp.item->key.obj_type == searchkey.obj_type) {
|
|
if (tp.item->size < sizeof(EXTENT_DATA_REF))
|
|
ERR("(%I64x,%x,%I64x) has size %u, not %Iu as expected\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset, tp.item->size, sizeof(EXTENT_DATA_REF));
|
|
else {
|
|
if (try_clone_edr(context, se, (EXTENT_DATA_REF*)tp.item->data))
|
|
return true;
|
|
}
|
|
} else if (tp.item->key.obj_id > searchkey.obj_id || (tp.item->key.obj_id == searchkey.obj_id && tp.item->key.obj_type > searchkey.obj_type))
|
|
break;
|
|
|
|
if (find_next_item(context->Vcb, &tp, &next_tp, false, NULL))
|
|
tp = next_tp;
|
|
else
|
|
break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static NTSTATUS flush_extents(send_context* context, traverse_ptr* tp1, traverse_ptr* tp2) {
|
|
NTSTATUS Status;
|
|
|
|
if ((IsListEmpty(&context->lastinode.exts) && IsListEmpty(&context->lastinode.oldexts)) || context->lastinode.size == 0)
|
|
return STATUS_SUCCESS;
|
|
|
|
if (context->parent) {
|
|
Status = add_ext_holes(context->Vcb, &context->lastinode.exts, context->lastinode.size);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("add_ext_holes returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
Status = add_ext_holes(context->Vcb, &context->lastinode.oldexts, context->lastinode.size);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("add_ext_holes returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
Status = sync_ext_cutoff_points(context);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("sync_ext_cutoff_points returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
while (!IsListEmpty(&context->lastinode.exts)) {
|
|
send_ext* se = CONTAINING_RECORD(RemoveHeadList(&context->lastinode.exts), send_ext, list_entry);
|
|
send_ext* se2 = context->parent ? CONTAINING_RECORD(RemoveHeadList(&context->lastinode.oldexts), send_ext, list_entry) : NULL;
|
|
ULONG pos;
|
|
EXTENT_DATA2* ed2;
|
|
|
|
if (se2) {
|
|
if (se->data.type == EXTENT_TYPE_INLINE && se2->data.type == EXTENT_TYPE_INLINE &&
|
|
RtlCompareMemory(se->data.data, se2->data.data, (ULONG)se->data.decoded_size) == (ULONG)se->data.decoded_size) {
|
|
ExFreePool(se);
|
|
ExFreePool(se2);
|
|
continue;
|
|
}
|
|
|
|
if (se->data.type == EXTENT_TYPE_REGULAR && se2->data.type == EXTENT_TYPE_REGULAR) {
|
|
EXTENT_DATA2 *ed2a, *ed2b;
|
|
|
|
ed2a = (EXTENT_DATA2*)se->data.data;
|
|
ed2b = (EXTENT_DATA2*)se2->data.data;
|
|
|
|
if (RtlCompareMemory(ed2a, ed2b, sizeof(EXTENT_DATA2)) == sizeof(EXTENT_DATA2)) {
|
|
ExFreePool(se);
|
|
ExFreePool(se2);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (se->data.type == EXTENT_TYPE_INLINE) {
|
|
pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_WRITE);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_OFFSET, &se->offset, sizeof(uint64_t));
|
|
|
|
if (se->data.compression == BTRFS_COMPRESSION_NONE)
|
|
send_add_tlv(context, BTRFS_SEND_TLV_DATA, se->data.data, (uint16_t)se->data.decoded_size);
|
|
else if (se->data.compression == BTRFS_COMPRESSION_ZLIB || se->data.compression == BTRFS_COMPRESSION_LZO || se->data.compression == BTRFS_COMPRESSION_ZSTD) {
|
|
ULONG inlen = se->datalen - (ULONG)offsetof(EXTENT_DATA, data[0]);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_DATA, NULL, (uint16_t)se->data.decoded_size);
|
|
RtlZeroMemory(&context->data[context->datalen - se->data.decoded_size], (ULONG)se->data.decoded_size);
|
|
|
|
if (se->data.compression == BTRFS_COMPRESSION_ZLIB) {
|
|
Status = zlib_decompress(se->data.data, inlen, &context->data[context->datalen - se->data.decoded_size], (uint32_t)se->data.decoded_size);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("zlib_decompress returned %08lx\n", Status);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
} else if (se->data.compression == BTRFS_COMPRESSION_LZO) {
|
|
if (inlen < sizeof(uint32_t)) {
|
|
ERR("extent data was truncated\n");
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_INTERNAL_ERROR;
|
|
} else
|
|
inlen -= sizeof(uint32_t);
|
|
|
|
Status = lzo_decompress(se->data.data + sizeof(uint32_t), inlen, &context->data[context->datalen - se->data.decoded_size], (uint32_t)se->data.decoded_size, sizeof(uint32_t));
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("lzo_decompress returned %08lx\n", Status);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
} else if (se->data.compression == BTRFS_COMPRESSION_ZSTD) {
|
|
Status = zstd_decompress(se->data.data, inlen, &context->data[context->datalen - se->data.decoded_size], (uint32_t)se->data.decoded_size);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("zlib_decompress returned %08lx\n", Status);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
}
|
|
} else {
|
|
ERR("unhandled compression type %x\n", se->data.compression);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
send_command_finish(context, pos);
|
|
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
continue;
|
|
}
|
|
|
|
ed2 = (EXTENT_DATA2*)se->data.data;
|
|
|
|
if (ed2->size != 0 && (context->parent || context->num_clones > 0)) {
|
|
if (try_clone(context, se)) {
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (ed2->size == 0) { // write sparse
|
|
uint64_t off, offset;
|
|
|
|
for (off = ed2->offset; off < ed2->offset + ed2->num_bytes; off += MAX_SEND_WRITE) {
|
|
uint16_t length = (uint16_t)min(min(ed2->offset + ed2->num_bytes - off, MAX_SEND_WRITE), context->lastinode.size - se->offset - off);
|
|
|
|
if (context->datalen > SEND_BUFFER_LENGTH) {
|
|
Status = wait_for_flush(context, tp1, tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("wait_for_flush returned %08lx\n", Status);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
}
|
|
|
|
pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_WRITE);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
|
|
offset = se->offset + off;
|
|
send_add_tlv(context, BTRFS_SEND_TLV_OFFSET, &offset, sizeof(uint64_t));
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_DATA, NULL, length);
|
|
RtlZeroMemory(&context->data[context->datalen - length], length);
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
} else if (se->data.compression == BTRFS_COMPRESSION_NONE) {
|
|
uint64_t off, offset;
|
|
uint8_t* buf;
|
|
|
|
buf = ExAllocatePoolWithTag(NonPagedPool, MAX_SEND_WRITE + (2 * context->Vcb->superblock.sector_size), ALLOC_TAG);
|
|
if (!buf) {
|
|
ERR("out of memory\n");
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
for (off = ed2->offset; off < ed2->offset + ed2->num_bytes; off += MAX_SEND_WRITE) {
|
|
uint16_t length = (uint16_t)min(ed2->offset + ed2->num_bytes - off, MAX_SEND_WRITE);
|
|
ULONG skip_start;
|
|
uint64_t addr = ed2->address + off;
|
|
void* csum;
|
|
|
|
if (context->datalen > SEND_BUFFER_LENGTH) {
|
|
Status = wait_for_flush(context, tp1, tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("wait_for_flush returned %08lx\n", Status);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
}
|
|
|
|
skip_start = addr % context->Vcb->superblock.sector_size;
|
|
addr -= skip_start;
|
|
|
|
if (context->lastinode.flags & BTRFS_INODE_NODATASUM)
|
|
csum = NULL;
|
|
else {
|
|
uint32_t len;
|
|
|
|
len = (uint32_t)sector_align(length + skip_start, context->Vcb->superblock.sector_size) / context->Vcb->superblock.sector_size;
|
|
|
|
csum = ExAllocatePoolWithTag(PagedPool, len * context->Vcb->csum_size, ALLOC_TAG);
|
|
if (!csum) {
|
|
ERR("out of memory\n");
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
Status = load_csum(context->Vcb, csum, addr, len, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("load_csum returned %08lx\n", Status);
|
|
ExFreePool(csum);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
}
|
|
|
|
Status = read_data(context->Vcb, addr, (uint32_t)sector_align(length + skip_start, context->Vcb->superblock.sector_size),
|
|
csum, false, buf, NULL, NULL, NULL, 0, false, NormalPagePriority);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("read_data returned %08lx\n", Status);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
if (csum) ExFreePool(csum);
|
|
return Status;
|
|
}
|
|
|
|
if (csum)
|
|
ExFreePool(csum);
|
|
|
|
pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_WRITE);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
|
|
offset = se->offset + off;
|
|
send_add_tlv(context, BTRFS_SEND_TLV_OFFSET, &offset, sizeof(uint64_t));
|
|
|
|
length = (uint16_t)min(context->lastinode.size - se->offset - off, length);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_DATA, buf + skip_start, length);
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
ExFreePool(buf);
|
|
} else {
|
|
uint8_t *buf, *compbuf;
|
|
uint64_t off;
|
|
void* csum;
|
|
|
|
buf = ExAllocatePoolWithTag(PagedPool, (ULONG)se->data.decoded_size, ALLOC_TAG);
|
|
if (!buf) {
|
|
ERR("out of memory\n");
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
compbuf = ExAllocatePoolWithTag(PagedPool, (ULONG)ed2->size, ALLOC_TAG);
|
|
if (!compbuf) {
|
|
ERR("out of memory\n");
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
if (context->lastinode.flags & BTRFS_INODE_NODATASUM)
|
|
csum = NULL;
|
|
else {
|
|
uint32_t len;
|
|
|
|
len = (uint32_t)(ed2->size / context->Vcb->superblock.sector_size);
|
|
|
|
csum = ExAllocatePoolWithTag(PagedPool, len * context->Vcb->csum_size, ALLOC_TAG);
|
|
if (!csum) {
|
|
ERR("out of memory\n");
|
|
ExFreePool(compbuf);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
Status = load_csum(context->Vcb, csum, ed2->address, len, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("load_csum returned %08lx\n", Status);
|
|
ExFreePool(csum);
|
|
ExFreePool(compbuf);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
Status = read_data(context->Vcb, ed2->address, (uint32_t)ed2->size, csum, false, compbuf, NULL, NULL, NULL, 0, false, NormalPagePriority);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("read_data returned %08lx\n", Status);
|
|
ExFreePool(compbuf);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
if (csum) ExFreePool(csum);
|
|
return Status;
|
|
}
|
|
|
|
if (csum)
|
|
ExFreePool(csum);
|
|
|
|
if (se->data.compression == BTRFS_COMPRESSION_ZLIB) {
|
|
Status = zlib_decompress(compbuf, (uint32_t)ed2->size, buf, (uint32_t)se->data.decoded_size);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("zlib_decompress returned %08lx\n", Status);
|
|
ExFreePool(compbuf);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
} else if (se->data.compression == BTRFS_COMPRESSION_LZO) {
|
|
Status = lzo_decompress(&compbuf[sizeof(uint32_t)], (uint32_t)ed2->size, buf, (uint32_t)se->data.decoded_size, sizeof(uint32_t));
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("lzo_decompress returned %08lx\n", Status);
|
|
ExFreePool(compbuf);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
} else if (se->data.compression == BTRFS_COMPRESSION_ZSTD) {
|
|
Status = zstd_decompress(compbuf, (uint32_t)ed2->size, buf, (uint32_t)se->data.decoded_size);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("zstd_decompress returned %08lx\n", Status);
|
|
ExFreePool(compbuf);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
ExFreePool(compbuf);
|
|
|
|
for (off = ed2->offset; off < ed2->offset + ed2->num_bytes; off += MAX_SEND_WRITE) {
|
|
uint16_t length = (uint16_t)min(ed2->offset + ed2->num_bytes - off, MAX_SEND_WRITE);
|
|
uint64_t offset;
|
|
|
|
if (context->datalen > SEND_BUFFER_LENGTH) {
|
|
Status = wait_for_flush(context, tp1, tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("wait_for_flush returned %08lx\n", Status);
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return Status;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExFreePool(buf);
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
}
|
|
|
|
pos = context->datalen;
|
|
|
|
send_command(context, BTRFS_SEND_CMD_WRITE);
|
|
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
|
|
offset = se->offset + off;
|
|
send_add_tlv(context, BTRFS_SEND_TLV_OFFSET, &offset, sizeof(uint64_t));
|
|
|
|
length = (uint16_t)min(context->lastinode.size - se->offset - off, length);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_DATA, &buf[off], length);
|
|
|
|
send_command_finish(context, pos);
|
|
}
|
|
|
|
ExFreePool(buf);
|
|
}
|
|
|
|
ExFreePool(se);
|
|
if (se2) ExFreePool(se2);
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS finish_inode(send_context* context, traverse_ptr* tp1, traverse_ptr* tp2) {
|
|
LIST_ENTRY* le;
|
|
|
|
if (!IsListEmpty(&context->lastinode.refs) || !IsListEmpty(&context->lastinode.oldrefs)) {
|
|
NTSTATUS Status = flush_refs(context, tp1, tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("flush_refs returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (context->send->cancelling)
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
if (!context->lastinode.deleting) {
|
|
if (context->lastinode.file) {
|
|
NTSTATUS Status = flush_extents(context, tp1, tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("flush_extents returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (context->send->cancelling)
|
|
return STATUS_SUCCESS;
|
|
|
|
send_truncate_command(context, context->lastinode.path, context->lastinode.size);
|
|
}
|
|
|
|
if (context->lastinode.new || context->lastinode.uid != context->lastinode.olduid || context->lastinode.gid != context->lastinode.oldgid)
|
|
send_chown_command(context, context->lastinode.path, context->lastinode.uid, context->lastinode.gid);
|
|
|
|
if (((context->lastinode.mode & __S_IFLNK) != __S_IFLNK || ((context->lastinode.mode & 07777) != 0777)) &&
|
|
(context->lastinode.new || context->lastinode.mode != context->lastinode.oldmode))
|
|
send_chmod_command(context, context->lastinode.path, context->lastinode.mode);
|
|
|
|
send_utimes_command(context, context->lastinode.path, &context->lastinode.atime, &context->lastinode.mtime, &context->lastinode.ctime);
|
|
}
|
|
|
|
while (!IsListEmpty(&context->lastinode.exts)) {
|
|
ExFreePool(CONTAINING_RECORD(RemoveHeadList(&context->lastinode.exts), send_ext, list_entry));
|
|
}
|
|
|
|
while (!IsListEmpty(&context->lastinode.oldexts)) {
|
|
ExFreePool(CONTAINING_RECORD(RemoveHeadList(&context->lastinode.oldexts), send_ext, list_entry));
|
|
}
|
|
|
|
if (context->parent) {
|
|
le = context->pending_rmdirs.Flink;
|
|
|
|
while (le != &context->pending_rmdirs) {
|
|
pending_rmdir* pr = CONTAINING_RECORD(le, pending_rmdir, list_entry);
|
|
|
|
if (pr->last_child_inode <= context->lastinode.inode) {
|
|
le = le->Flink;
|
|
|
|
send_rmdir_command(context, pr->sd->namelen, pr->sd->name);
|
|
|
|
RemoveEntryList(&pr->sd->list_entry);
|
|
|
|
if (pr->sd->name)
|
|
ExFreePool(pr->sd->name);
|
|
|
|
while (!IsListEmpty(&pr->sd->deleted_children)) {
|
|
deleted_child* dc = CONTAINING_RECORD(RemoveHeadList(&pr->sd->deleted_children), deleted_child, list_entry);
|
|
ExFreePool(dc);
|
|
}
|
|
|
|
ExFreePool(pr->sd);
|
|
|
|
RemoveEntryList(&pr->list_entry);
|
|
ExFreePool(pr);
|
|
} else
|
|
break;
|
|
}
|
|
}
|
|
|
|
context->lastinode.inode = 0;
|
|
context->lastinode.o = NULL;
|
|
|
|
if (context->lastinode.path) {
|
|
ExFreePool(context->lastinode.path);
|
|
context->lastinode.path = NULL;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
static NTSTATUS send_extent_data(send_context* context, traverse_ptr* tp, traverse_ptr* tp2) {
|
|
NTSTATUS Status;
|
|
|
|
if (tp && tp2 && tp->item->size == tp2->item->size && RtlCompareMemory(tp->item->data, tp2->item->data, tp->item->size) == tp->item->size)
|
|
return STATUS_SUCCESS;
|
|
|
|
if (!IsListEmpty(&context->lastinode.refs) || !IsListEmpty(&context->lastinode.oldrefs)) {
|
|
Status = flush_refs(context, tp, tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("flush_refs returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (context->send->cancelling)
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
if ((context->lastinode.mode & __S_IFLNK) == __S_IFLNK)
|
|
return STATUS_SUCCESS;
|
|
|
|
if (tp) {
|
|
EXTENT_DATA* ed;
|
|
EXTENT_DATA2* ed2 = NULL;
|
|
|
|
if (tp->item->size < sizeof(EXTENT_DATA)) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected at least %Iu\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset,
|
|
tp->item->size, sizeof(EXTENT_DATA));
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
ed = (EXTENT_DATA*)tp->item->data;
|
|
|
|
if (ed->encryption != BTRFS_ENCRYPTION_NONE) {
|
|
ERR("unknown encryption type %u\n", ed->encryption);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (ed->encoding != BTRFS_ENCODING_NONE) {
|
|
ERR("unknown encoding type %u\n", ed->encoding);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (ed->compression != BTRFS_COMPRESSION_NONE && ed->compression != BTRFS_COMPRESSION_ZLIB &&
|
|
ed->compression != BTRFS_COMPRESSION_LZO && ed->compression != BTRFS_COMPRESSION_ZSTD) {
|
|
ERR("unknown compression type %u\n", ed->compression);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (ed->type == EXTENT_TYPE_REGULAR) {
|
|
if (tp->item->size < offsetof(EXTENT_DATA, data[0]) + sizeof(EXTENT_DATA2)) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected %Iu\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset,
|
|
tp->item->size, offsetof(EXTENT_DATA, data[0]) + sizeof(EXTENT_DATA2));
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
ed2 = (EXTENT_DATA2*)ed->data;
|
|
} else if (ed->type == EXTENT_TYPE_INLINE) {
|
|
if (tp->item->size < offsetof(EXTENT_DATA, data[0]) + ed->decoded_size && ed->compression == BTRFS_COMPRESSION_NONE) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected %I64u\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset,
|
|
tp->item->size, offsetof(EXTENT_DATA, data[0]) + ed->decoded_size);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
}
|
|
|
|
if ((ed->type == EXTENT_TYPE_INLINE || (ed->type == EXTENT_TYPE_REGULAR && ed2->size != 0)) && ed->decoded_size != 0) {
|
|
send_ext* se = ExAllocatePoolWithTag(PagedPool, offsetof(send_ext, data) + tp->item->size, ALLOC_TAG);
|
|
|
|
if (!se) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
se->offset = tp->item->key.offset;
|
|
se->datalen = tp->item->size;
|
|
RtlCopyMemory(&se->data, tp->item->data, tp->item->size);
|
|
InsertTailList(&context->lastinode.exts, &se->list_entry);
|
|
}
|
|
}
|
|
|
|
if (tp2) {
|
|
EXTENT_DATA* ed;
|
|
EXTENT_DATA2* ed2 = NULL;
|
|
|
|
if (tp2->item->size < sizeof(EXTENT_DATA)) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected at least %Iu\n", tp2->item->key.obj_id, tp2->item->key.obj_type, tp2->item->key.offset,
|
|
tp2->item->size, sizeof(EXTENT_DATA));
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
ed = (EXTENT_DATA*)tp2->item->data;
|
|
|
|
if (ed->encryption != BTRFS_ENCRYPTION_NONE) {
|
|
ERR("unknown encryption type %u\n", ed->encryption);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (ed->encoding != BTRFS_ENCODING_NONE) {
|
|
ERR("unknown encoding type %u\n", ed->encoding);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (ed->compression != BTRFS_COMPRESSION_NONE && ed->compression != BTRFS_COMPRESSION_ZLIB &&
|
|
ed->compression != BTRFS_COMPRESSION_LZO && ed->compression != BTRFS_COMPRESSION_ZSTD) {
|
|
ERR("unknown compression type %u\n", ed->compression);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (ed->type == EXTENT_TYPE_REGULAR) {
|
|
if (tp2->item->size < offsetof(EXTENT_DATA, data[0]) + sizeof(EXTENT_DATA2)) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected %Iu\n", tp2->item->key.obj_id, tp2->item->key.obj_type, tp2->item->key.offset,
|
|
tp2->item->size, offsetof(EXTENT_DATA, data[0]) + sizeof(EXTENT_DATA2));
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
ed2 = (EXTENT_DATA2*)ed->data;
|
|
} else if (ed->type == EXTENT_TYPE_INLINE) {
|
|
if (tp2->item->size < offsetof(EXTENT_DATA, data[0]) + ed->decoded_size) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected %I64u\n", tp2->item->key.obj_id, tp2->item->key.obj_type, tp2->item->key.offset,
|
|
tp2->item->size, offsetof(EXTENT_DATA, data[0]) + ed->decoded_size);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
}
|
|
|
|
if ((ed->type == EXTENT_TYPE_INLINE || (ed->type == EXTENT_TYPE_REGULAR && ed2->size != 0)) && ed->decoded_size != 0) {
|
|
send_ext* se = ExAllocatePoolWithTag(PagedPool, offsetof(send_ext, data) + tp2->item->size, ALLOC_TAG);
|
|
|
|
if (!se) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
se->offset = tp2->item->key.offset;
|
|
se->datalen = tp2->item->size;
|
|
RtlCopyMemory(&se->data, tp2->item->data, tp2->item->size);
|
|
InsertTailList(&context->lastinode.oldexts, &se->list_entry);
|
|
}
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
typedef struct {
|
|
uint16_t namelen;
|
|
char* name;
|
|
uint16_t value1len;
|
|
char* value1;
|
|
uint16_t value2len;
|
|
char* value2;
|
|
LIST_ENTRY list_entry;
|
|
} xattr_cmp;
|
|
|
|
static NTSTATUS send_xattr(send_context* context, traverse_ptr* tp, traverse_ptr* tp2) {
|
|
if (tp && tp2 && tp->item->size == tp2->item->size && RtlCompareMemory(tp->item->data, tp2->item->data, tp->item->size) == tp->item->size)
|
|
return STATUS_SUCCESS;
|
|
|
|
if (!IsListEmpty(&context->lastinode.refs) || !IsListEmpty(&context->lastinode.oldrefs)) {
|
|
NTSTATUS Status = flush_refs(context, tp, tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("flush_refs returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (context->send->cancelling)
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
if (tp && tp->item->size < sizeof(DIR_ITEM)) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected at least %Iu\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset,
|
|
tp->item->size, sizeof(DIR_ITEM));
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (tp2 && tp2->item->size < sizeof(DIR_ITEM)) {
|
|
ERR("(%I64x,%x,%I64x) was %u bytes, expected at least %Iu\n", tp2->item->key.obj_id, tp2->item->key.obj_type, tp2->item->key.offset,
|
|
tp2->item->size, sizeof(DIR_ITEM));
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
if (tp && !tp2) {
|
|
ULONG len;
|
|
DIR_ITEM* di;
|
|
|
|
len = tp->item->size;
|
|
di = (DIR_ITEM*)tp->item->data;
|
|
|
|
do {
|
|
ULONG pos;
|
|
|
|
if (len < sizeof(DIR_ITEM) || len < offsetof(DIR_ITEM, name[0]) + di->m + di->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
pos = context->datalen;
|
|
send_command(context, BTRFS_SEND_CMD_SET_XATTR);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_XATTR_NAME, di->name, di->n);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_XATTR_DATA, &di->name[di->n], di->m);
|
|
send_command_finish(context, pos);
|
|
|
|
len -= (ULONG)offsetof(DIR_ITEM, name[0]) + di->m + di->n;
|
|
di = (DIR_ITEM*)&di->name[di->m + di->n];
|
|
} while (len > 0);
|
|
} else if (!tp && tp2) {
|
|
ULONG len;
|
|
DIR_ITEM* di;
|
|
|
|
len = tp2->item->size;
|
|
di = (DIR_ITEM*)tp2->item->data;
|
|
|
|
do {
|
|
ULONG pos;
|
|
|
|
if (len < sizeof(DIR_ITEM) || len < offsetof(DIR_ITEM, name[0]) + di->m + di->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp2->item->key.obj_id, tp2->item->key.obj_type, tp2->item->key.offset);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
pos = context->datalen;
|
|
send_command(context, BTRFS_SEND_CMD_REMOVE_XATTR);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_XATTR_NAME, di->name, di->n);
|
|
send_command_finish(context, pos);
|
|
|
|
len -= (ULONG)offsetof(DIR_ITEM, name[0]) + di->m + di->n;
|
|
di = (DIR_ITEM*)&di->name[di->m + di->n];
|
|
} while (len > 0);
|
|
} else {
|
|
ULONG len;
|
|
DIR_ITEM* di;
|
|
LIST_ENTRY xattrs;
|
|
|
|
InitializeListHead(&xattrs);
|
|
|
|
len = tp->item->size;
|
|
di = (DIR_ITEM*)tp->item->data;
|
|
|
|
do {
|
|
xattr_cmp* xa;
|
|
|
|
if (len < sizeof(DIR_ITEM) || len < offsetof(DIR_ITEM, name[0]) + di->m + di->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp->item->key.obj_id, tp->item->key.obj_type, tp->item->key.offset);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
xa = ExAllocatePoolWithTag(PagedPool, sizeof(xattr_cmp), ALLOC_TAG);
|
|
if (!xa) {
|
|
ERR("out of memory\n");
|
|
|
|
while (!IsListEmpty(&xattrs)) {
|
|
ExFreePool(CONTAINING_RECORD(RemoveHeadList(&xattrs), xattr_cmp, list_entry));
|
|
}
|
|
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
xa->namelen = di->n;
|
|
xa->name = di->name;
|
|
xa->value1len = di->m;
|
|
xa->value1 = di->name + di->n;
|
|
xa->value2len = 0;
|
|
xa->value2 = NULL;
|
|
|
|
InsertTailList(&xattrs, &xa->list_entry);
|
|
|
|
len -= (ULONG)offsetof(DIR_ITEM, name[0]) + di->m + di->n;
|
|
di = (DIR_ITEM*)&di->name[di->m + di->n];
|
|
} while (len > 0);
|
|
|
|
len = tp2->item->size;
|
|
di = (DIR_ITEM*)tp2->item->data;
|
|
|
|
do {
|
|
xattr_cmp* xa;
|
|
LIST_ENTRY* le;
|
|
bool found = false;
|
|
|
|
if (len < sizeof(DIR_ITEM) || len < offsetof(DIR_ITEM, name[0]) + di->m + di->n) {
|
|
ERR("(%I64x,%x,%I64x) was truncated\n", tp2->item->key.obj_id, tp2->item->key.obj_type, tp2->item->key.offset);
|
|
return STATUS_INTERNAL_ERROR;
|
|
}
|
|
|
|
le = xattrs.Flink;
|
|
while (le != &xattrs) {
|
|
xa = CONTAINING_RECORD(le, xattr_cmp, list_entry);
|
|
|
|
if (xa->namelen == di->n && RtlCompareMemory(xa->name, di->name, di->n) == di->n) {
|
|
xa->value2len = di->m;
|
|
xa->value2 = di->name + di->n;
|
|
found = true;
|
|
break;
|
|
}
|
|
|
|
le = le->Flink;
|
|
}
|
|
|
|
if (!found) {
|
|
xa = ExAllocatePoolWithTag(PagedPool, sizeof(xattr_cmp), ALLOC_TAG);
|
|
if (!xa) {
|
|
ERR("out of memory\n");
|
|
|
|
while (!IsListEmpty(&xattrs)) {
|
|
ExFreePool(CONTAINING_RECORD(RemoveHeadList(&xattrs), xattr_cmp, list_entry));
|
|
}
|
|
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
xa->namelen = di->n;
|
|
xa->name = di->name;
|
|
xa->value1len = 0;
|
|
xa->value1 = NULL;
|
|
xa->value2len = di->m;
|
|
xa->value2 = di->name + di->n;
|
|
|
|
InsertTailList(&xattrs, &xa->list_entry);
|
|
}
|
|
|
|
len -= (ULONG)offsetof(DIR_ITEM, name[0]) + di->m + di->n;
|
|
di = (DIR_ITEM*)&di->name[di->m + di->n];
|
|
} while (len > 0);
|
|
|
|
while (!IsListEmpty(&xattrs)) {
|
|
xattr_cmp* xa = CONTAINING_RECORD(RemoveHeadList(&xattrs), xattr_cmp, list_entry);
|
|
|
|
if (xa->value1len != xa->value2len || !xa->value1 || !xa->value2 || RtlCompareMemory(xa->value1, xa->value2, xa->value1len) != xa->value1len) {
|
|
ULONG pos;
|
|
|
|
if (!xa->value1) {
|
|
pos = context->datalen;
|
|
send_command(context, BTRFS_SEND_CMD_REMOVE_XATTR);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_XATTR_NAME, xa->name, xa->namelen);
|
|
send_command_finish(context, pos);
|
|
} else {
|
|
pos = context->datalen;
|
|
send_command(context, BTRFS_SEND_CMD_SET_XATTR);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_PATH, context->lastinode.path, context->lastinode.path ? (uint16_t)strlen(context->lastinode.path) : 0);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_XATTR_NAME, xa->name, xa->namelen);
|
|
send_add_tlv(context, BTRFS_SEND_TLV_XATTR_DATA, xa->value1, xa->value1len);
|
|
send_command_finish(context, pos);
|
|
}
|
|
}
|
|
|
|
ExFreePool(xa);
|
|
}
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
_Function_class_(KSTART_ROUTINE)
|
|
static void __stdcall send_thread(void* ctx) {
|
|
send_context* context = (send_context*)ctx;
|
|
NTSTATUS Status;
|
|
KEY searchkey;
|
|
traverse_ptr tp, tp2;
|
|
|
|
InterlockedIncrement(&context->root->send_ops);
|
|
|
|
if (context->parent)
|
|
InterlockedIncrement(&context->parent->send_ops);
|
|
|
|
if (context->clones) {
|
|
ULONG i;
|
|
|
|
for (i = 0; i < context->num_clones; i++) {
|
|
InterlockedIncrement(&context->clones[i]->send_ops);
|
|
}
|
|
}
|
|
|
|
ExAcquireResourceExclusiveLite(&context->Vcb->tree_lock, true);
|
|
|
|
flush_subvol_fcbs(context->root);
|
|
|
|
if (context->parent)
|
|
flush_subvol_fcbs(context->parent);
|
|
|
|
if (context->Vcb->need_write)
|
|
Status = do_write(context->Vcb, NULL);
|
|
else
|
|
Status = STATUS_SUCCESS;
|
|
|
|
free_trees(context->Vcb);
|
|
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("do_write returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
ExConvertExclusiveToSharedLite(&context->Vcb->tree_lock);
|
|
|
|
searchkey.obj_id = searchkey.offset = 0;
|
|
searchkey.obj_type = 0;
|
|
|
|
Status = find_item(context->Vcb, context->root, &tp, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->parent) {
|
|
bool ended1 = false, ended2 = false;
|
|
Status = find_item(context->Vcb, context->parent, &tp2, &searchkey, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
do {
|
|
traverse_ptr next_tp;
|
|
|
|
if (context->datalen > SEND_BUFFER_LENGTH) {
|
|
KEY key1 = tp.item->key, key2 = tp2.item->key;
|
|
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
|
|
KeClearEvent(&context->send->cleared_event);
|
|
KeSetEvent(&context->buffer_event, 0, true);
|
|
KeWaitForSingleObject(&context->send->cleared_event, Executive, KernelMode, false, NULL);
|
|
|
|
if (context->send->cancelling)
|
|
goto end;
|
|
|
|
ExAcquireResourceSharedLite(&context->Vcb->tree_lock, true);
|
|
|
|
if (!ended1) {
|
|
Status = find_item(context->Vcb, context->root, &tp, &key1, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (keycmp(tp.item->key, key1)) {
|
|
ERR("readonly subvolume changed\n");
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
Status = STATUS_INTERNAL_ERROR;
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (!ended2) {
|
|
Status = find_item(context->Vcb, context->parent, &tp2, &key2, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (keycmp(tp2.item->key, key2)) {
|
|
ERR("readonly subvolume changed\n");
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
Status = STATUS_INTERNAL_ERROR;
|
|
goto end;
|
|
}
|
|
}
|
|
}
|
|
|
|
while (!ended1 && !ended2 && tp.tree->header.address == tp2.tree->header.address) {
|
|
Status = skip_to_difference(context->Vcb, &tp, &tp2, &ended1, &ended2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("skip_to_difference returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (!ended1 && !ended2 && !keycmp(tp.item->key, tp2.item->key)) {
|
|
bool no_next = false, no_next2 = false;
|
|
|
|
TRACE("~ %I64x,%x,%I64x\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset);
|
|
|
|
if (context->lastinode.inode != 0 && tp.item->key.obj_id > context->lastinode.inode) {
|
|
Status = finish_inode(context, ended1 ? NULL : &tp, ended2 ? NULL : &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("finish_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (tp.item->key.obj_type == TYPE_INODE_ITEM) {
|
|
if (tp.item->size == tp2.item->size && tp.item->size > 0 && RtlCompareMemory(tp.item->data, tp2.item->data, tp.item->size) == tp.item->size) {
|
|
uint64_t inode = tp.item->key.obj_id;
|
|
|
|
while (true) {
|
|
if (!find_next_item(context->Vcb, &tp, &next_tp, false, NULL)) {
|
|
ended1 = true;
|
|
break;
|
|
}
|
|
|
|
tp = next_tp;
|
|
|
|
if (tp.item->key.obj_id != inode)
|
|
break;
|
|
}
|
|
|
|
while (true) {
|
|
if (!find_next_item(context->Vcb, &tp2, &next_tp, false, NULL)) {
|
|
ended2 = true;
|
|
break;
|
|
}
|
|
|
|
tp2 = next_tp;
|
|
|
|
if (tp2.item->key.obj_id != inode)
|
|
break;
|
|
}
|
|
|
|
no_next = true;
|
|
} else if (tp.item->size > sizeof(uint64_t) && tp2.item->size > sizeof(uint64_t) && *(uint64_t*)tp.item->data != *(uint64_t*)tp2.item->data) {
|
|
uint64_t inode = tp.item->key.obj_id;
|
|
|
|
Status = send_inode(context, NULL, &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
while (true) {
|
|
if (!find_next_item(context->Vcb, &tp2, &next_tp, false, NULL)) {
|
|
ended2 = true;
|
|
break;
|
|
}
|
|
|
|
tp2 = next_tp;
|
|
|
|
if (tp2.item->key.obj_id != inode)
|
|
break;
|
|
|
|
if (tp2.item->key.obj_type == TYPE_INODE_REF) {
|
|
Status = send_inode_ref(context, &tp2, true);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_ref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp2.item->key.obj_type == TYPE_INODE_EXTREF) {
|
|
Status = send_inode_extref(context, &tp2, true);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_extref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
}
|
|
|
|
Status = finish_inode(context, ended1 ? NULL : &tp, ended2 ? NULL : &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("finish_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
no_next2 = true;
|
|
|
|
Status = send_inode(context, &tp, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else {
|
|
Status = send_inode(context, &tp, &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_INODE_REF) {
|
|
Status = send_inode_ref(context, &tp, false);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_ref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
Status = send_inode_ref(context, &tp2, true);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_ref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_INODE_EXTREF) {
|
|
Status = send_inode_extref(context, &tp, false);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_extref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
Status = send_inode_extref(context, &tp2, true);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_extref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_EXTENT_DATA) {
|
|
Status = send_extent_data(context, &tp, &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_extent_data returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_XATTR_ITEM) {
|
|
Status = send_xattr(context, &tp, &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_xattr returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (!no_next) {
|
|
if (find_next_item(context->Vcb, &tp, &next_tp, false, NULL))
|
|
tp = next_tp;
|
|
else
|
|
ended1 = true;
|
|
|
|
if (!no_next2) {
|
|
if (find_next_item(context->Vcb, &tp2, &next_tp, false, NULL))
|
|
tp2 = next_tp;
|
|
else
|
|
ended2 = true;
|
|
}
|
|
}
|
|
} else if (ended2 || (!ended1 && !ended2 && keycmp(tp.item->key, tp2.item->key) == -1)) {
|
|
TRACE("A %I64x,%x,%I64x\n", tp.item->key.obj_id, tp.item->key.obj_type, tp.item->key.offset);
|
|
|
|
if (context->lastinode.inode != 0 && tp.item->key.obj_id > context->lastinode.inode) {
|
|
Status = finish_inode(context, ended1 ? NULL : &tp, ended2 ? NULL : &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("finish_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (tp.item->key.obj_type == TYPE_INODE_ITEM) {
|
|
Status = send_inode(context, &tp, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_INODE_REF) {
|
|
Status = send_inode_ref(context, &tp, false);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_ref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_INODE_EXTREF) {
|
|
Status = send_inode_extref(context, &tp, false);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_extref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_EXTENT_DATA) {
|
|
Status = send_extent_data(context, &tp, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_extent_data returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_XATTR_ITEM) {
|
|
Status = send_xattr(context, &tp, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_xattr returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (find_next_item(context->Vcb, &tp, &next_tp, false, NULL))
|
|
tp = next_tp;
|
|
else
|
|
ended1 = true;
|
|
} else if (ended1 || (!ended1 && !ended2 && keycmp(tp.item->key, tp2.item->key) == 1)) {
|
|
TRACE("B %I64x,%x,%I64x\n", tp2.item->key.obj_id, tp2.item->key.obj_type, tp2.item->key.offset);
|
|
|
|
if (context->lastinode.inode != 0 && tp2.item->key.obj_id > context->lastinode.inode) {
|
|
Status = finish_inode(context, ended1 ? NULL : &tp, ended2 ? NULL : &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("finish_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (tp2.item->key.obj_type == TYPE_INODE_ITEM) {
|
|
Status = send_inode(context, NULL, &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp2.item->key.obj_type == TYPE_INODE_REF) {
|
|
Status = send_inode_ref(context, &tp2, true);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_ref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp2.item->key.obj_type == TYPE_INODE_EXTREF) {
|
|
Status = send_inode_extref(context, &tp2, true);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_extref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp2.item->key.obj_type == TYPE_EXTENT_DATA && !context->lastinode.deleting) {
|
|
Status = send_extent_data(context, NULL, &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_extent_data returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp2.item->key.obj_type == TYPE_XATTR_ITEM && !context->lastinode.deleting) {
|
|
Status = send_xattr(context, NULL, &tp2);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_xattr returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (find_next_item(context->Vcb, &tp2, &next_tp, false, NULL))
|
|
tp2 = next_tp;
|
|
else
|
|
ended2 = true;
|
|
}
|
|
} while (!ended1 || !ended2);
|
|
} else {
|
|
do {
|
|
traverse_ptr next_tp;
|
|
|
|
if (context->datalen > SEND_BUFFER_LENGTH) {
|
|
KEY key = tp.item->key;
|
|
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
|
|
KeClearEvent(&context->send->cleared_event);
|
|
KeSetEvent(&context->buffer_event, 0, true);
|
|
KeWaitForSingleObject(&context->send->cleared_event, Executive, KernelMode, false, NULL);
|
|
|
|
if (context->send->cancelling)
|
|
goto end;
|
|
|
|
ExAcquireResourceSharedLite(&context->Vcb->tree_lock, true);
|
|
|
|
Status = find_item(context->Vcb, context->root, &tp, &key, false, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("find_item returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (keycmp(tp.item->key, key)) {
|
|
ERR("readonly subvolume changed\n");
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
Status = STATUS_INTERNAL_ERROR;
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (context->lastinode.inode != 0 && tp.item->key.obj_id > context->lastinode.inode) {
|
|
Status = finish_inode(context, &tp, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("finish_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (tp.item->key.obj_type == TYPE_INODE_ITEM) {
|
|
Status = send_inode(context, &tp, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_INODE_REF) {
|
|
Status = send_inode_ref(context, &tp, false);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_ref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_INODE_EXTREF) {
|
|
Status = send_inode_extref(context, &tp, false);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_inode_extref returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_EXTENT_DATA) {
|
|
Status = send_extent_data(context, &tp, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_extent_data returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
} else if (tp.item->key.obj_type == TYPE_XATTR_ITEM) {
|
|
Status = send_xattr(context, &tp, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("send_xattr returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
if (context->send->cancelling) {
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (find_next_item(context->Vcb, &tp, &next_tp, false, NULL))
|
|
tp = next_tp;
|
|
else
|
|
break;
|
|
} while (true);
|
|
}
|
|
|
|
if (context->lastinode.inode != 0) {
|
|
Status = finish_inode(context, NULL, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("finish_inode returned %08lx\n", Status);
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
goto end;
|
|
}
|
|
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
|
|
if (context->send->cancelling)
|
|
goto end;
|
|
} else
|
|
ExReleaseResourceLite(&context->Vcb->tree_lock);
|
|
|
|
KeClearEvent(&context->send->cleared_event);
|
|
KeSetEvent(&context->buffer_event, 0, true);
|
|
KeWaitForSingleObject(&context->send->cleared_event, Executive, KernelMode, false, NULL);
|
|
|
|
Status = STATUS_SUCCESS;
|
|
|
|
end:
|
|
if (!NT_SUCCESS(Status)) {
|
|
KeSetEvent(&context->buffer_event, 0, false);
|
|
|
|
if (context->send->ccb)
|
|
context->send->ccb->send_status = Status;
|
|
}
|
|
|
|
ExAcquireResourceExclusiveLite(&context->Vcb->send_load_lock, true);
|
|
|
|
while (!IsListEmpty(&context->orphans)) {
|
|
orphan* o = CONTAINING_RECORD(RemoveHeadList(&context->orphans), orphan, list_entry);
|
|
ExFreePool(o);
|
|
}
|
|
|
|
while (!IsListEmpty(&context->dirs)) {
|
|
send_dir* sd = CONTAINING_RECORD(RemoveHeadList(&context->dirs), send_dir, list_entry);
|
|
|
|
if (sd->name)
|
|
ExFreePool(sd->name);
|
|
|
|
while (!IsListEmpty(&sd->deleted_children)) {
|
|
deleted_child* dc = CONTAINING_RECORD(RemoveHeadList(&sd->deleted_children), deleted_child, list_entry);
|
|
ExFreePool(dc);
|
|
}
|
|
|
|
ExFreePool(sd);
|
|
}
|
|
|
|
ZwClose(context->send->thread);
|
|
context->send->thread = NULL;
|
|
|
|
if (context->send->ccb)
|
|
context->send->ccb->send = NULL;
|
|
|
|
RemoveEntryList(&context->send->list_entry);
|
|
ExFreePool(context->send);
|
|
ExFreePool(context->data);
|
|
|
|
InterlockedDecrement(&context->Vcb->running_sends);
|
|
InterlockedDecrement(&context->root->send_ops);
|
|
|
|
if (context->parent)
|
|
InterlockedDecrement(&context->parent->send_ops);
|
|
|
|
ExReleaseResourceLite(&context->Vcb->send_load_lock);
|
|
|
|
if (context->clones) {
|
|
ULONG i;
|
|
|
|
for (i = 0; i < context->num_clones; i++) {
|
|
InterlockedDecrement(&context->clones[i]->send_ops);
|
|
}
|
|
|
|
ExFreePool(context->clones);
|
|
}
|
|
|
|
ExFreePool(context);
|
|
|
|
PsTerminateSystemThread(STATUS_SUCCESS);
|
|
}
|
|
|
|
NTSTATUS send_subvol(device_extension* Vcb, void* data, ULONG datalen, PFILE_OBJECT FileObject, PIRP Irp) {
|
|
NTSTATUS Status;
|
|
fcb* fcb;
|
|
ccb* ccb;
|
|
root* parsubvol = NULL;
|
|
send_context* context;
|
|
send_info* send;
|
|
ULONG num_clones = 0;
|
|
root** clones = NULL;
|
|
OBJECT_ATTRIBUTES oa;
|
|
|
|
if (!FileObject || !FileObject->FsContext || !FileObject->FsContext2 || FileObject->FsContext == Vcb->volume_fcb)
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
if (!SeSinglePrivilegeCheck(RtlConvertLongToLuid(SE_MANAGE_VOLUME_PRIVILEGE), Irp->RequestorMode))
|
|
return STATUS_PRIVILEGE_NOT_HELD;
|
|
|
|
fcb = FileObject->FsContext;
|
|
ccb = FileObject->FsContext2;
|
|
|
|
if (fcb->inode != SUBVOL_ROOT_INODE || fcb == Vcb->root_fileref->fcb)
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
if (!Vcb->readonly && !(fcb->subvol->root_item.flags & BTRFS_SUBVOL_READONLY))
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
if (data) {
|
|
btrfs_send_subvol* bss = (btrfs_send_subvol*)data;
|
|
HANDLE parent;
|
|
|
|
#if defined(_WIN64)
|
|
if (IoIs32bitProcess(Irp)) {
|
|
btrfs_send_subvol32* bss32 = (btrfs_send_subvol32*)data;
|
|
|
|
if (datalen < offsetof(btrfs_send_subvol32, num_clones))
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
parent = Handle32ToHandle(bss32->parent);
|
|
|
|
if (datalen >= offsetof(btrfs_send_subvol32, clones[0]))
|
|
num_clones = bss32->num_clones;
|
|
|
|
if (datalen < offsetof(btrfs_send_subvol32, clones[0]) + (num_clones * sizeof(uint32_t)))
|
|
return STATUS_INVALID_PARAMETER;
|
|
} else {
|
|
#endif
|
|
if (datalen < offsetof(btrfs_send_subvol, num_clones))
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
parent = bss->parent;
|
|
|
|
if (datalen >= offsetof(btrfs_send_subvol, clones[0]))
|
|
num_clones = bss->num_clones;
|
|
|
|
if (datalen < offsetof(btrfs_send_subvol, clones[0]) + (num_clones * sizeof(HANDLE)))
|
|
return STATUS_INVALID_PARAMETER;
|
|
#if defined(_WIN64)
|
|
}
|
|
#endif
|
|
|
|
if (parent) {
|
|
PFILE_OBJECT fileobj;
|
|
struct _fcb* parfcb;
|
|
|
|
Status = ObReferenceObjectByHandle(parent, 0, *IoFileObjectType, Irp->RequestorMode, (void**)&fileobj, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("ObReferenceObjectByHandle returned %08lx\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
if (fileobj->DeviceObject != FileObject->DeviceObject) {
|
|
ObDereferenceObject(fileobj);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
parfcb = fileobj->FsContext;
|
|
|
|
if (!parfcb || parfcb == Vcb->root_fileref->fcb || parfcb == Vcb->volume_fcb || parfcb->inode != SUBVOL_ROOT_INODE) {
|
|
ObDereferenceObject(fileobj);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
parsubvol = parfcb->subvol;
|
|
ObDereferenceObject(fileobj);
|
|
|
|
if (!Vcb->readonly && !(parsubvol->root_item.flags & BTRFS_SUBVOL_READONLY))
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
if (parsubvol == fcb->subvol)
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (num_clones > 0) {
|
|
ULONG i;
|
|
|
|
clones = ExAllocatePoolWithTag(PagedPool, sizeof(root*) * num_clones, ALLOC_TAG);
|
|
if (!clones) {
|
|
ERR("out of memory\n");
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
for (i = 0; i < num_clones; i++) {
|
|
HANDLE h;
|
|
PFILE_OBJECT fileobj;
|
|
struct _fcb* clonefcb;
|
|
|
|
#if defined(_WIN64)
|
|
if (IoIs32bitProcess(Irp)) {
|
|
btrfs_send_subvol32* bss32 = (btrfs_send_subvol32*)data;
|
|
|
|
h = Handle32ToHandle(bss32->clones[i]);
|
|
} else
|
|
#endif
|
|
h = bss->clones[i];
|
|
|
|
Status = ObReferenceObjectByHandle(h, 0, *IoFileObjectType, Irp->RequestorMode, (void**)&fileobj, NULL);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("ObReferenceObjectByHandle returned %08lx\n", Status);
|
|
ExFreePool(clones);
|
|
return Status;
|
|
}
|
|
|
|
if (fileobj->DeviceObject != FileObject->DeviceObject) {
|
|
ObDereferenceObject(fileobj);
|
|
ExFreePool(clones);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
clonefcb = fileobj->FsContext;
|
|
|
|
if (!clonefcb || clonefcb == Vcb->root_fileref->fcb || clonefcb == Vcb->volume_fcb || clonefcb->inode != SUBVOL_ROOT_INODE) {
|
|
ObDereferenceObject(fileobj);
|
|
ExFreePool(clones);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
clones[i] = clonefcb->subvol;
|
|
ObDereferenceObject(fileobj);
|
|
|
|
if (!Vcb->readonly && !(clones[i]->root_item.flags & BTRFS_SUBVOL_READONLY)) {
|
|
ExFreePool(clones);
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ExAcquireResourceExclusiveLite(&Vcb->send_load_lock, true);
|
|
|
|
if (ccb->send) {
|
|
WARN("send operation already running\n");
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
return STATUS_DEVICE_NOT_READY;
|
|
}
|
|
|
|
context = ExAllocatePoolWithTag(NonPagedPool, sizeof(send_context), ALLOC_TAG);
|
|
if (!context) {
|
|
ERR("out of memory\n");
|
|
|
|
if (clones)
|
|
ExFreePool(clones);
|
|
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
context->Vcb = Vcb;
|
|
context->root = fcb->subvol;
|
|
context->parent = parsubvol;
|
|
InitializeListHead(&context->orphans);
|
|
InitializeListHead(&context->dirs);
|
|
InitializeListHead(&context->pending_rmdirs);
|
|
context->lastinode.inode = 0;
|
|
context->lastinode.path = NULL;
|
|
context->lastinode.sd = NULL;
|
|
context->root_dir = NULL;
|
|
context->num_clones = num_clones;
|
|
context->clones = clones;
|
|
InitializeListHead(&context->lastinode.refs);
|
|
InitializeListHead(&context->lastinode.oldrefs);
|
|
InitializeListHead(&context->lastinode.exts);
|
|
InitializeListHead(&context->lastinode.oldexts);
|
|
|
|
context->data = ExAllocatePoolWithTag(PagedPool, SEND_BUFFER_LENGTH + (2 * MAX_SEND_WRITE), ALLOC_TAG); // give ourselves some wiggle room
|
|
if (!context->data) {
|
|
ExFreePool(context);
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
context->datalen = 0;
|
|
|
|
send_subvol_header(context, fcb->subvol, ccb->fileref); // FIXME - fileref needs some sort of lock here
|
|
|
|
KeInitializeEvent(&context->buffer_event, NotificationEvent, false);
|
|
|
|
send = ExAllocatePoolWithTag(NonPagedPool, sizeof(send_info), ALLOC_TAG);
|
|
if (!send) {
|
|
ERR("out of memory\n");
|
|
ExFreePool(context->data);
|
|
ExFreePool(context);
|
|
|
|
if (clones)
|
|
ExFreePool(clones);
|
|
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
KeInitializeEvent(&send->cleared_event, NotificationEvent, false);
|
|
|
|
send->context = context;
|
|
context->send = send;
|
|
|
|
ccb->send = send;
|
|
send->ccb = ccb;
|
|
ccb->send_status = STATUS_SUCCESS;
|
|
|
|
send->cancelling = false;
|
|
|
|
InterlockedIncrement(&Vcb->running_sends);
|
|
|
|
InitializeObjectAttributes(&oa, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);
|
|
|
|
Status = PsCreateSystemThread(&send->thread, 0, &oa, NULL, NULL, send_thread, context);
|
|
if (!NT_SUCCESS(Status)) {
|
|
ERR("PsCreateSystemThread returned %08lx\n", Status);
|
|
ccb->send = NULL;
|
|
InterlockedDecrement(&Vcb->running_sends);
|
|
ExFreePool(send);
|
|
ExFreePool(context->data);
|
|
ExFreePool(context);
|
|
|
|
if (clones)
|
|
ExFreePool(clones);
|
|
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
return Status;
|
|
}
|
|
|
|
InsertTailList(&Vcb->send_ops, &send->list_entry);
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS read_send_buffer(device_extension* Vcb, PFILE_OBJECT FileObject, void* data, ULONG datalen, ULONG_PTR* retlen, KPROCESSOR_MODE processor_mode) {
|
|
ccb* ccb;
|
|
send_context* context;
|
|
|
|
ccb = FileObject ? FileObject->FsContext2 : NULL;
|
|
if (!ccb)
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
if (!SeSinglePrivilegeCheck(RtlConvertLongToLuid(SE_MANAGE_VOLUME_PRIVILEGE), processor_mode))
|
|
return STATUS_PRIVILEGE_NOT_HELD;
|
|
|
|
ExAcquireResourceExclusiveLite(&Vcb->send_load_lock, true);
|
|
|
|
if (!ccb->send) {
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
return !NT_SUCCESS(ccb->send_status) ? ccb->send_status : STATUS_END_OF_FILE;
|
|
}
|
|
|
|
context = (send_context*)ccb->send->context;
|
|
|
|
KeWaitForSingleObject(&context->buffer_event, Executive, KernelMode, false, NULL);
|
|
|
|
if (datalen == 0) {
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
RtlCopyMemory(data, context->data, min(datalen, context->datalen));
|
|
|
|
if (datalen < context->datalen) { // not empty yet
|
|
*retlen = datalen;
|
|
RtlMoveMemory(context->data, &context->data[datalen], context->datalen - datalen);
|
|
context->datalen -= datalen;
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
} else {
|
|
*retlen = context->datalen;
|
|
context->datalen = 0;
|
|
ExReleaseResourceLite(&Vcb->send_load_lock);
|
|
|
|
KeClearEvent(&context->buffer_event);
|
|
KeSetEvent(&ccb->send->cleared_event, 0, false);
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|