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252 lines
5.2 KiB
C
252 lines
5.2 KiB
C
/* file.c - Additional file attributes */
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/* Written 1993 by Werner Almesberger */
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/* FAT32, VFAT, Atari format support, and various fixes additions May 1998
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* by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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//#include <unistd.h>
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#define _LINUX_STAT_H /* hack to avoid inclusion of <linux/stat.h> */
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#define _LINUX_STRING_H_ /* hack to avoid inclusion of <linux/string.h>*/
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#define _LINUX_FS_H /* hack to avoid inclusion of <linux/fs.h> */
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//#include <linux/version.h>
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//#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
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//# define __KERNEL__
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//# include <asm/types.h>
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//# undef __KERNEL__
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//#endif
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#include "dosfsck.h"
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#include "msdos_fs.h"
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#include "common.h"
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#include "file.h"
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FDSC *fp_root = NULL;
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static void put_char(char **p,unsigned char c)
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{
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if ((c >= ' ' && c < 0x7f) || c >= 0xa0) *(*p)++ = c;
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else {
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*(*p)++ = '\\';
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*(*p)++ = '0'+(c >> 6);
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*(*p)++ = '0'+((c >> 3) & 7);
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*(*p)++ = '0'+(c & 7);
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}
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}
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char *file_name(unsigned char *fixed)
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{
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static char path[MSDOS_NAME*4+2];
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char *p;
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int i,j;
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p = path;
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for (i = j = 0; i < 8; i++)
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if (fixed[i] != ' ') {
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while (j++ < i) *p++ = ' ';
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put_char(&p,fixed[i]);
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}
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if (strncmp(fixed+8," ",3)) {
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*p++ = '.';
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for (i = j = 0; i < 3; i++)
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if (fixed[i+8] != ' ') {
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while (j++ < i) *p++ = ' ';
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put_char(&p,fixed[i+8]);
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}
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}
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*p = 0;
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return path;
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}
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int file_cvt(unsigned char *name,unsigned char *fixed)
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{
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unsigned char c;
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int size,ext,cnt;
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size = 8;
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ext = 0;
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while (*name) {
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c = *name;
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if (c < ' ' || c > 0x7e || strchr("*?<>|\"/",c)) {
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printf("Invalid character in name. Use \\ooo for special "
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"characters.\n");
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return 0;
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}
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if (c == '.') {
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if (ext) {
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printf("Duplicate dots in name.\n");
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return 0;
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}
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while (size--) *fixed++ = ' ';
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size = 3;
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ext = 1;
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name++;
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continue;
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}
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if (c == '\\') {
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c = 0;
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for (cnt = 3; cnt; cnt--) {
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if (*name < '0' || *name > '7') {
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printf("Invalid octal character.\n");
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return 0;
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}
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c = c*8+*name++-'0';
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}
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if (cnt < 4) {
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printf("Expected three octal digits.\n");
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return 0;
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}
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name += 3;
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}
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if (islower(c)) c = toupper(c);
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if (size) {
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*fixed++ = c;
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size--;
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}
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name++;
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}
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if (*name || size == 8) return 0;
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if (!ext) {
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while (size--) *fixed++ = ' ';
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size = 3;
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}
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while (size--) *fixed++ = ' ';
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return 1;
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}
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void file_add(char *path,FD_TYPE type)
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{
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FDSC **current,*walk;
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char name[MSDOS_NAME];
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char *here;
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current = &fp_root;
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if (*path != '/') die("%s: Absolute path required.",path);
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path++;
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while (1) {
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if ((here = strchr(path,'/'))) *here = 0;
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if (!file_cvt(path,name)) exit(2);
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for (walk = *current; walk; walk = walk->next)
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if (!here && (!strncmp(name,walk->name,MSDOS_NAME) || (type ==
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fdt_undelete && !strncmp(name+1,walk->name+1,MSDOS_NAME-1))))
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die("Ambiguous name: \"%s\"",path);
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else if (here && !strncmp(name,walk->name,MSDOS_NAME)) break;
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if (!walk) {
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walk = alloc(sizeof(FDSC));
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strncpy(walk->name,name,MSDOS_NAME);
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walk->type = here ? fdt_none : type;
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walk->first = NULL;
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walk->next = *current;
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*current = walk;
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}
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current = &walk->first;
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if (!here) break;
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*here = '/';
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path = here+1;
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}
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}
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FDSC **file_cd(FDSC **curr,char *fixed)
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{
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FDSC **walk;
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if (!curr || !*curr) return NULL;
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for (walk = curr; *walk; walk = &(*walk)->next)
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if (!strncmp((*walk)->name,fixed,MSDOS_NAME) && (*walk)->first)
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return &(*walk)->first;
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return NULL;
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}
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static FDSC **file_find(FDSC **dir,char *fixed)
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{
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if (!dir || !*dir) return NULL;
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if (*(unsigned char *) fixed == DELETED_FLAG) {
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while (*dir) {
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if (!strncmp((*dir)->name+1,fixed+1,MSDOS_NAME-1) && !(*dir)->first)
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return dir;
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dir = &(*dir)->next;
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}
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return NULL;
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}
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while (*dir) {
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if (!strncmp((*dir)->name,fixed,MSDOS_NAME) && !(*dir)->first)
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return dir;
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dir = &(*dir)->next;
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}
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return NULL;
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}
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FD_TYPE file_type(FDSC **curr,char *fixed)
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{
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FDSC **this;
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if ((this = file_find(curr,fixed))) return (*this)->type;
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return fdt_none;
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}
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void file_modify(FDSC **curr,char *fixed)
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{
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FDSC **this,*next;
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if (!(this = file_find(curr,fixed)))
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die("Internal error: file_find failed");
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switch ((*this)->type) {
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case fdt_drop:
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printf("Dropping %s\n",file_name(fixed));
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*(unsigned char *) fixed = DELETED_FLAG;
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break;
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case fdt_undelete:
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*fixed = *(*this)->name;
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printf("Undeleting %s\n",file_name(fixed));
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break;
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default:
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die("Internal error: file_modify");
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}
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next = (*this)->next;
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free(*this);
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*this = next;
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}
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static void report_unused(FDSC *this)
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{
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FDSC *next;
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while (this) {
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next = this->next;
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if (this->first) report_unused(this->first);
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else if (this->type != fdt_none)
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printf("Warning: did not %s file %s\n",this->type == fdt_drop ?
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"drop" : "undelete",file_name(this->name));
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free(this);
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this = next;
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}
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}
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void file_unused(void)
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{
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report_unused(fp_root);
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}
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/* Local Variables: */
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/* tab-width: 8 */
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/* End: */
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