diff options
Diffstat (limited to 'git-compat-util.h')
| -rw-r--r-- | git-compat-util.h | 401 |
1 files changed, 256 insertions, 145 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index 362e040f52..a3c4537366 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -4,14 +4,29 @@ #define _FILE_OFFSET_BITS 64 #ifndef FLEX_ARRAY -#if defined(__GNUC__) && (__GNUC__ < 3) -#define FLEX_ARRAY 0 -#else -#define FLEX_ARRAY /* empty */ +/* + * See if our compiler is known to support flexible array members. + */ +#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580)) +# define FLEX_ARRAY /* empty */ +#elif defined(__GNUC__) +# if (__GNUC__ >= 3) +# define FLEX_ARRAY /* empty */ +# else +# define FLEX_ARRAY 0 /* older GNU extension */ +# endif +#endif + +/* + * Otherwise, default to safer but a bit wasteful traditional style + */ +#ifndef FLEX_ARRAY +# define FLEX_ARRAY 1 #endif #endif #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) +#define bitsizeof(x) (CHAR_BIT * sizeof(x)) #ifdef __GNUC__ #define TYPEOF(x) (__typeof__(x)) @@ -19,18 +34,42 @@ #define TYPEOF(x) #endif -#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits)))) +#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits)))) +#define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */ + +#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) /* Approximation of the length of the decimal representation of this type. */ #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1) -#if !defined(__APPLE__) && !defined(__FreeBSD__) +#if defined(__sun__) + /* + * On Solaris, when _XOPEN_EXTENDED is set, its header file + * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE + * setting to say we are XPG5 or XPG6. Also on Solaris, + * XPG6 programs must be compiled with a c99 compiler, while + * non XPG6 programs must be compiled with a pre-c99 compiler. + */ +# if __STDC_VERSION__ - 0 >= 199901L +# define _XOPEN_SOURCE 600 +# else +# define _XOPEN_SOURCE 500 +# endif +#elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && !defined(_M_UNIX) && !defined(sgi) #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */ #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */ #endif #define _ALL_SOURCE 1 #define _GNU_SOURCE 1 #define _BSD_SOURCE 1 +#define _NETBSD_SOURCE 1 +#define _SGI_SOURCE 1 + +#ifdef WIN32 /* Both MinGW and MSVC */ +#define WIN32_LEAN_AND_MEAN /* stops windows.h including winsock.h */ +#include <winsock2.h> +#include <windows.h> +#endif #include <unistd.h> #include <stdio.h> @@ -48,12 +87,19 @@ #include <sys/time.h> #include <time.h> #include <signal.h> -#include <sys/wait.h> #include <fnmatch.h> -#include <sys/poll.h> -#include <sys/socket.h> #include <assert.h> #include <regex.h> +#include <utime.h> +#ifndef __MINGW32__ +#include <sys/wait.h> +#include <sys/poll.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <termios.h> +#ifndef NO_SYS_SELECT_H +#include <sys/select.h> +#endif #include <netinet/in.h> #include <netinet/tcp.h> #include <arpa/inet.h> @@ -64,16 +110,36 @@ #undef _XOPEN_SOURCE #include <grp.h> #define _XOPEN_SOURCE 600 +#include "compat/cygwin.h" #else #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */ #include <grp.h> #define _ALL_SOURCE 1 #endif +#else /* __MINGW32__ */ +/* pull in Windows compatibility stuff */ +#include "compat/mingw.h" +#endif /* __MINGW32__ */ +#ifdef _MSC_VER +#include "compat/msvc.h" +#endif + +#ifndef NO_LIBGEN_H +#include <libgen.h> +#else +#define basename gitbasename +extern char *gitbasename(char *); +#endif #ifndef NO_ICONV #include <iconv.h> #endif +#ifndef NO_OPENSSL +#include <openssl/ssl.h> +#include <openssl/err.h> +#endif + /* On most systems <limits.h> would have given us this, but * not on some systems (e.g. GNU/Hurd). */ @@ -85,27 +151,66 @@ #define PRIuMAX "llu" #endif +#ifndef PRIu32 +#define PRIu32 "u" +#endif + +#ifndef PRIx32 +#define PRIx32 "x" +#endif + +#ifndef PATH_SEP +#define PATH_SEP ':' +#endif + +#ifndef STRIP_EXTENSION +#define STRIP_EXTENSION "" +#endif + +#ifndef has_dos_drive_prefix +#define has_dos_drive_prefix(path) 0 +#endif + +#ifndef is_dir_sep +#define is_dir_sep(c) ((c) == '/') +#endif + #ifdef __GNUC__ #define NORETURN __attribute__((__noreturn__)) +#define NORETURN_PTR __attribute__((__noreturn__)) +#elif defined(_MSC_VER) +#define NORETURN __declspec(noreturn) +#define NORETURN_PTR #else #define NORETURN +#define NORETURN_PTR #ifndef __attribute__ #define __attribute__(x) #endif #endif +#include "compat/bswap.h" + /* General helper functions */ -extern void usage(const char *err) NORETURN; -extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); +extern NORETURN void usage(const char *err); +extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2))); +extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2))); +extern NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2))); extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); -extern void set_usage_routine(void (*routine)(const char *err) NORETURN); -extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); -extern void set_error_routine(void (*routine)(const char *err, va_list params)); -extern void set_warn_routine(void (*routine)(const char *warn, va_list params)); +extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)); -#ifdef NO_MMAP +extern int prefixcmp(const char *str, const char *prefix); +extern int suffixcmp(const char *str, const char *suffix); + +static inline const char *skip_prefix(const char *str, const char *prefix) +{ + size_t len = strlen(prefix); + return strncmp(str, prefix, len) ? NULL : str + len; +} + +#if defined(NO_MMAP) || defined(USE_WIN32_MMAP) #ifndef PROT_READ #define PROT_READ 1 @@ -119,13 +224,19 @@ extern void set_warn_routine(void (*routine)(const char *warn, va_list params)); extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); extern int git_munmap(void *start, size_t length); +#else /* NO_MMAP || USE_WIN32_MMAP */ + +#include <sys/mman.h> + +#endif /* NO_MMAP || USE_WIN32_MMAP */ + +#ifdef NO_MMAP + /* This value must be multiple of (pagesize * 2) */ #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) #else /* NO_MMAP */ -#include <sys/mman.h> - /* This value must be multiple of (pagesize * 2) */ #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ (sizeof(void*) >= 8 \ @@ -134,6 +245,12 @@ extern int git_munmap(void *start, size_t length); #endif /* NO_MMAP */ +#ifdef NO_ST_BLOCKS_IN_STRUCT_STAT +#define on_disk_bytes(st) ((st).st_size) +#else +#define on_disk_bytes(st) ((st).st_blocks * 512) +#endif + #define DEFAULT_PACKED_GIT_LIMIT \ ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) @@ -141,12 +258,28 @@ extern int git_munmap(void *start, size_t length); #define pread git_pread extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); #endif +/* + * Forward decl that will remind us if its twin in cache.h changes. + * This function is used in compat/pread.c. But we can't include + * cache.h there. + */ +extern ssize_t read_in_full(int fd, void *buf, size_t count); #ifdef NO_SETENV #define setenv gitsetenv extern int gitsetenv(const char *, const char *, int); #endif +#ifdef NO_MKDTEMP +#define mkdtemp gitmkdtemp +extern char *gitmkdtemp(char *); +#endif + +#ifdef NO_MKSTEMPS +#define mkstemps gitmkstemps +extern int gitmkstemps(char *, int); +#endif + #ifdef NO_UNSETENV #define unsetenv gitunsetenv extern void gitunsetenv(const char *); @@ -172,136 +305,62 @@ extern uintmax_t gitstrtoumax(const char *, char **, int); extern const char *githstrerror(int herror); #endif -extern void release_pack_memory(size_t, int); - -static inline char* xstrdup(const char *str) -{ - char *ret = strdup(str); - if (!ret) { - release_pack_memory(strlen(str) + 1, -1); - ret = strdup(str); - if (!ret) - die("Out of memory, strdup failed"); - } - return ret; -} - -static inline void *xmalloc(size_t size) -{ - void *ret = malloc(size); - if (!ret && !size) - ret = malloc(1); - if (!ret) { - release_pack_memory(size, -1); - ret = malloc(size); - if (!ret && !size) - ret = malloc(1); - if (!ret) - die("Out of memory, malloc failed"); - } -#ifdef XMALLOC_POISON - memset(ret, 0xA5, size); -#endif - return ret; -} - -static inline char *xstrndup(const char *str, size_t len) -{ - char *p; - - p = memchr(str, '\0', len); - if (p) - len = p - str; - p = xmalloc(len + 1); - memcpy(p, str, len); - p[len] = '\0'; - return p; -} - -static inline void *xrealloc(void *ptr, size_t size) -{ - void *ret = realloc(ptr, size); - if (!ret && !size) - ret = realloc(ptr, 1); - if (!ret) { - release_pack_memory(size, -1); - ret = realloc(ptr, size); - if (!ret && !size) - ret = realloc(ptr, 1); - if (!ret) - die("Out of memory, realloc failed"); - } - return ret; -} +#ifdef NO_MEMMEM +#define memmem gitmemmem +void *gitmemmem(const void *haystack, size_t haystacklen, + const void *needle, size_t needlelen); +#endif -static inline void *xcalloc(size_t nmemb, size_t size) -{ - void *ret = calloc(nmemb, size); - if (!ret && (!nmemb || !size)) - ret = calloc(1, 1); - if (!ret) { - release_pack_memory(nmemb * size, -1); - ret = calloc(nmemb, size); - if (!ret && (!nmemb || !size)) - ret = calloc(1, 1); - if (!ret) - die("Out of memory, calloc failed"); - } - return ret; -} +#ifdef FREAD_READS_DIRECTORIES +#ifdef fopen +#undef fopen +#endif +#define fopen(a,b) git_fopen(a,b) +extern FILE *git_fopen(const char*, const char*); +#endif -static inline void *xmmap(void *start, size_t length, - int prot, int flags, int fd, off_t offset) -{ - void *ret = mmap(start, length, prot, flags, fd, offset); - if (ret == MAP_FAILED) { - if (!length) - return NULL; - release_pack_memory(length, fd); - ret = mmap(start, length, prot, flags, fd, offset); - if (ret == MAP_FAILED) - die("Out of memory? mmap failed: %s", strerror(errno)); - } - return ret; -} +#ifdef SNPRINTF_RETURNS_BOGUS +#define snprintf git_snprintf +extern int git_snprintf(char *str, size_t maxsize, + const char *format, ...); +#define vsnprintf git_vsnprintf +extern int git_vsnprintf(char *str, size_t maxsize, + const char *format, va_list ap); +#endif -static inline ssize_t xread(int fd, void *buf, size_t len) -{ - ssize_t nr; - while (1) { - nr = read(fd, buf, len); - if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) - continue; - return nr; - } -} +#ifdef __GLIBC_PREREQ +#if __GLIBC_PREREQ(2, 1) +#define HAVE_STRCHRNUL +#endif +#endif -static inline ssize_t xwrite(int fd, const void *buf, size_t len) +#ifndef HAVE_STRCHRNUL +#define strchrnul gitstrchrnul +static inline char *gitstrchrnul(const char *s, int c) { - ssize_t nr; - while (1) { - nr = write(fd, buf, len); - if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) - continue; - return nr; - } + while (*s && *s != c) + s++; + return (char *)s; } +#endif -static inline int xdup(int fd) -{ - int ret = dup(fd); - if (ret < 0) - die("dup failed: %s", strerror(errno)); - return ret; -} +extern void release_pack_memory(size_t, int); -static inline FILE *xfdopen(int fd, const char *mode) -{ - FILE *stream = fdopen(fd, mode); - if (stream == NULL) - die("Out of memory? fdopen failed: %s", strerror(errno)); - return stream; -} +extern char *xstrdup(const char *str); +extern void *xmalloc(size_t size); +extern void *xmallocz(size_t size); +extern void *xmemdupz(const void *data, size_t len); +extern char *xstrndup(const char *str, size_t len); +extern void *xrealloc(void *ptr, size_t size); +extern void *xcalloc(size_t nmemb, size_t size); +extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); +extern ssize_t xread(int fd, void *buf, size_t len); +extern ssize_t xwrite(int fd, const void *buf, size_t len); +extern int xdup(int fd); +extern FILE *xfdopen(int fd, const char *mode); +extern int xmkstemp(char *template); +extern int odb_mkstemp(char *template, size_t limit, const char *pattern); +extern int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1); static inline size_t xsize_t(off_t len) { @@ -316,6 +375,7 @@ static inline int has_extension(const char *filename, const char *ext) } /* Sane ctype - no locale, and works with signed chars */ +#undef isascii #undef isspace #undef isdigit #undef isalpha @@ -326,11 +386,16 @@ extern unsigned char sane_ctype[256]; #define GIT_SPACE 0x01 #define GIT_DIGIT 0x02 #define GIT_ALPHA 0x04 +#define GIT_GLOB_SPECIAL 0x08 +#define GIT_REGEX_SPECIAL 0x10 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) +#define isascii(x) (((x) & ~0x7f) == 0) #define isspace(x) sane_istest(x,GIT_SPACE) #define isdigit(x) sane_istest(x,GIT_DIGIT) #define isalpha(x) sane_istest(x,GIT_ALPHA) #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) +#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL) +#define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL) #define tolower(x) sane_case((unsigned char)(x), 0x20) #define toupper(x) sane_case((unsigned char)(x), 0) @@ -341,11 +406,6 @@ static inline int sane_case(int x, int high) return x; } -static inline int prefixcmp(const char *str, const char *prefix) -{ - return strncmp(str, prefix, strlen(prefix)); -} - static inline int strtoul_ui(char const *s, int base, unsigned int *result) { unsigned long ul; @@ -359,4 +419,55 @@ static inline int strtoul_ui(char const *s, int base, unsigned int *result) return 0; } +static inline int strtol_i(char const *s, int base, int *result) +{ + long ul; + char *p; + + errno = 0; + ul = strtol(s, &p, base); + if (errno || *p || p == s || (int) ul != ul) + return -1; + *result = ul; + return 0; +} + +#ifdef INTERNAL_QSORT +void git_qsort(void *base, size_t nmemb, size_t size, + int(*compar)(const void *, const void *)); +#define qsort git_qsort +#endif + +#ifndef DIR_HAS_BSD_GROUP_SEMANTICS +# define FORCE_DIR_SET_GID S_ISGID +#else +# define FORCE_DIR_SET_GID 0 +#endif + +#ifdef NO_NSEC +#undef USE_NSEC +#define ST_CTIME_NSEC(st) 0 +#define ST_MTIME_NSEC(st) 0 +#else +#ifdef USE_ST_TIMESPEC +#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec)) +#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec)) +#else +#define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec)) +#define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec)) +#endif +#endif + +#ifdef UNRELIABLE_FSTAT +#define fstat_is_reliable() 0 +#else +#define fstat_is_reliable() 1 +#endif + +/* + * Preserves errno, prints a message, but gives no warning for ENOENT. + * Always returns the return value of unlink(2). + */ +int unlink_or_warn(const char *path); + #endif |