93117262c2
adjust to new aes_xts routines. allow optional offset in the 4th argument where the encrypted sectors start instead of hardcoding the 64K header area for cryptsetup. avoid allocating temporary buffer for cryptio() reads, we can just decrypt in place there. use sdmalloc() to allocate the temporary buffer for cryptio() writes so that devsd wont need to allocate and copy in case it didnt like our alignment. do not duplicate the error reporting code, just use io() that is what it is for. allow 2*256 bit keys in addition to 2*128 bit keys.
248 lines
7.3 KiB
C
248 lines
7.3 KiB
C
/*
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* functions (possibly) linked in, complete, from libc.
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*/
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#define nelem(x) (sizeof(x)/sizeof((x)[0]))
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#define offsetof(s, m) (ulong)(&(((s*)0)->m))
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#define assert(x) if(x){}else _assert("x")
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/*
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* mem routines
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*/
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extern void* memccpy(void*, void*, int, ulong);
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extern void* memset(void*, int, ulong);
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extern int memcmp(void*, void*, ulong);
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extern void* memmove(void*, void*, ulong);
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extern void* memchr(void*, int, ulong);
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/*
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* string routines
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*/
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extern char* strcat(char*, char*);
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extern char* strchr(char*, int);
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extern char* strrchr(char*, int);
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extern int strcmp(char*, char*);
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extern char* strcpy(char*, char*);
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extern char* strecpy(char*, char*, char*);
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extern char* strncat(char*, char*, long);
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extern char* strncpy(char*, char*, long);
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extern int strncmp(char*, char*, long);
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extern long strlen(char*);
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extern char* strstr(char*, char*);
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extern int atoi(char*);
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extern int fullrune(char*, int);
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extern int cistrcmp(char*, char*);
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extern int cistrncmp(char*, char*, int);
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enum
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{
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UTFmax = 4, /* maximum bytes per rune */
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Runesync = 0x80, /* cannot represent part of a UTF sequence */
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Runeself = 0x80, /* rune and UTF sequences are the same (<) */
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Runeerror = 0xFFFD, /* decoding error in UTF */
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Runemax = 0x10FFFF, /* 21 bit rune */
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};
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/*
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* rune routines
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*/
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extern int runetochar(char*, Rune*);
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extern int chartorune(Rune*, char*);
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extern char* utfrune(char*, long);
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extern int utflen(char*);
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extern int utfnlen(char*, long);
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extern int runelen(long);
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/*
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* random number
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*/
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extern int rand(void);
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extern int nrand(int);
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extern long lrand(void);
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extern long lnrand(long);
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extern int abs(int);
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/*
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* print routines
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*/
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typedef struct Fmt Fmt;
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typedef int (*Fmts)(Fmt*);
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struct Fmt{
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uchar runes; /* output buffer is runes or chars? */
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void *start; /* of buffer */
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void *to; /* current place in the buffer */
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void *stop; /* end of the buffer; overwritten if flush fails */
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int (*flush)(Fmt *); /* called when to == stop */
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void *farg; /* to make flush a closure */
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int nfmt; /* num chars formatted so far */
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va_list args; /* args passed to dofmt */
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int r; /* % format Rune */
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int width;
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int prec;
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ulong flags;
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};
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extern int print(char*, ...);
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extern char* seprint(char*, char*, char*, ...);
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extern char* vseprint(char*, char*, char*, va_list);
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extern int snprint(char*, int, char*, ...);
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extern int vsnprint(char*, int, char*, va_list);
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extern int sprint(char*, char*, ...);
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#pragma varargck argpos fmtprint 2
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#pragma varargck argpos print 1
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#pragma varargck argpos seprint 3
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#pragma varargck argpos snprint 3
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#pragma varargck argpos sprint 2
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#pragma varargck type "llb" vlong
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#pragma varargck type "lld" vlong
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#pragma varargck type "llx" vlong
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#pragma varargck type "llb" uvlong
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#pragma varargck type "lld" uvlong
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#pragma varargck type "llx" uvlong
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#pragma varargck type "lb" long
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#pragma varargck type "ld" long
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#pragma varargck type "lx" long
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#pragma varargck type "lb" ulong
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#pragma varargck type "ld" ulong
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#pragma varargck type "lx" ulong
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#pragma varargck type "zd" intptr
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#pragma varargck type "zo" intptr
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#pragma varargck type "zx" intptr
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#pragma varargck type "zb" intptr
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#pragma varargck type "zd" uintptr
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#pragma varargck type "zo" uintptr
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#pragma varargck type "zx" uintptr
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#pragma varargck type "zb" uintptr
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#pragma varargck type "b" int
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#pragma varargck type "d" int
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#pragma varargck type "x" int
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#pragma varargck type "c" int
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#pragma varargck type "C" int
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#pragma varargck type "b" uint
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#pragma varargck type "d" uint
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#pragma varargck type "x" uint
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#pragma varargck type "c" uint
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#pragma varargck type "C" uint
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#pragma varargck type "s" char*
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#pragma varargck type "q" char*
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#pragma varargck type "S" Rune*
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#pragma varargck type "%" void
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#pragma varargck type "p" uintptr
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#pragma varargck type "p" void*
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#pragma varargck flag ','
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extern int fmtstrinit(Fmt*);
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extern int fmtinstall(int, int (*)(Fmt*));
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extern void quotefmtinstall(void);
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extern int fmtprint(Fmt*, char*, ...);
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extern int fmtstrcpy(Fmt*, char*);
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extern char* fmtstrflush(Fmt*);
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/*
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* one-of-a-kind
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*/
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extern char* cleanname(char*);
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extern uintptr getcallerpc(void*);
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extern long strtol(char*, char**, int);
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extern ulong strtoul(char*, char**, int);
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extern vlong strtoll(char*, char**, int);
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extern uvlong strtoull(char*, char**, int);
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extern char etext[];
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extern char edata[];
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extern char end[];
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extern int getfields(char*, char**, int, int, char*);
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extern int tokenize(char*, char**, int);
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extern int dec64(uchar*, int, char*, int);
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extern int dec16(uchar*, int, char*, int);
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extern int encodefmt(Fmt*);
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extern void qsort(void*, long, long, int (*)(void*, void*));
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/*
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* Syscall data structures
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*/
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#define MORDER 0x0003 /* mask for bits defining order of mounting */
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#define MREPL 0x0000 /* mount replaces object */
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#define MBEFORE 0x0001 /* mount goes before others in union directory */
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#define MAFTER 0x0002 /* mount goes after others in union directory */
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#define MCREATE 0x0004 /* permit creation in mounted directory */
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#define MCACHE 0x0010 /* cache some data */
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#define MMASK 0x0017 /* all bits on */
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#define OREAD 0 /* open for read */
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#define OWRITE 1 /* write */
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#define ORDWR 2 /* read and write */
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#define OEXEC 3 /* execute, == read but check execute permission */
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#define OTRUNC 16 /* or'ed in (except for exec), truncate file first */
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#define OCEXEC 32 /* or'ed in, close on exec */
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#define ORCLOSE 64 /* or'ed in, remove on close */
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#define OEXCL 0x1000 /* or'ed in, exclusive create */
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#define NCONT 0 /* continue after note */
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#define NDFLT 1 /* terminate after note */
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#define NSAVE 2 /* clear note but hold state */
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#define NRSTR 3 /* restore saved state */
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typedef struct Qid Qid;
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typedef struct Dir Dir;
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typedef struct OWaitmsg OWaitmsg;
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typedef struct Waitmsg Waitmsg;
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#define ERRMAX 128 /* max length of error string */
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#define KNAMELEN 28 /* max length of name held in kernel */
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/* bits in Qid.type */
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#define QTDIR 0x80 /* type bit for directories */
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#define QTAPPEND 0x40 /* type bit for append only files */
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#define QTEXCL 0x20 /* type bit for exclusive use files */
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#define QTMOUNT 0x10 /* type bit for mounted channel */
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#define QTAUTH 0x08 /* type bit for authentication file */
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#define QTFILE 0x00 /* plain file */
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/* bits in Dir.mode */
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#define DMDIR 0x80000000 /* mode bit for directories */
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#define DMAPPEND 0x40000000 /* mode bit for append only files */
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#define DMEXCL 0x20000000 /* mode bit for exclusive use files */
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#define DMMOUNT 0x10000000 /* mode bit for mounted channel */
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#define DMREAD 0x4 /* mode bit for read permission */
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#define DMWRITE 0x2 /* mode bit for write permission */
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#define DMEXEC 0x1 /* mode bit for execute permission */
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struct Qid
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{
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uvlong path;
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ulong vers;
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uchar type;
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};
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struct Dir {
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/* system-modified data */
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ushort type; /* server type */
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uint dev; /* server subtype */
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/* file data */
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Qid qid; /* unique id from server */
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ulong mode; /* permissions */
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ulong atime; /* last read time */
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ulong mtime; /* last write time */
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vlong length; /* file length: see <u.h> */
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char *name; /* last element of path */
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char *uid; /* owner name */
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char *gid; /* group name */
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char *muid; /* last modifier name */
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};
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struct OWaitmsg
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{
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char pid[12]; /* of loved one */
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char time[3*12]; /* of loved one and descendants */
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char msg[64]; /* compatibility BUG */
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};
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struct Waitmsg
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{
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int pid; /* of loved one */
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ulong time[3]; /* of loved one and descendants */
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char msg[ERRMAX]; /* actually variable-size in user mode */
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};
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