| #ifndef GIT_COMPAT_UTIL_H |
| #define GIT_COMPAT_UTIL_H |
| |
| #define _FILE_OFFSET_BITS 64 |
| |
| #ifndef FLEX_ARRAY |
| /* |
| * 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)) |
| #else |
| #define TYPEOF(x) |
| #endif |
| |
| #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(__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 |
| |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <limits.h> |
| #include <sys/param.h> |
| #include <sys/types.h> |
| #include <dirent.h> |
| #include <sys/time.h> |
| #include <time.h> |
| #include <signal.h> |
| #include <fnmatch.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> |
| #ifndef NO_SYS_SELECT_H |
| #include <sys/select.h> |
| #endif |
| #include <netinet/in.h> |
| #include <netinet/tcp.h> |
| #include <arpa/inet.h> |
| #include <netdb.h> |
| #include <pwd.h> |
| #include <inttypes.h> |
| #if defined(__CYGWIN__) |
| #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__ */ |
| |
| #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). |
| */ |
| #ifndef PATH_MAX |
| #define PATH_MAX 4096 |
| #endif |
| |
| #ifndef PRIuMAX |
| #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__)) |
| #else |
| #define NORETURN |
| #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 void die_errno(const char *err, ...) NORETURN __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_die_routine(void (*routine)(const char *err, va_list params) NORETURN); |
| |
| extern int prefixcmp(const char *str, const char *prefix); |
| extern time_t tm_to_time_t(const struct tm *tm); |
| |
| 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 |
| #define PROT_WRITE 2 |
| #define MAP_PRIVATE 1 |
| #define MAP_FAILED ((void*)-1) |
| #endif |
| |
| #define mmap git_mmap |
| #define munmap git_munmap |
| 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 */ |
| |
| /* This value must be multiple of (pagesize * 2) */ |
| #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ |
| (sizeof(void*) >= 8 \ |
| ? 1 * 1024 * 1024 * 1024 \ |
| : 32 * 1024 * 1024) |
| |
| #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)) |
| |
| #ifdef NO_PREAD |
| #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 *); |
| #endif |
| |
| #ifdef NO_STRCASESTR |
| #define strcasestr gitstrcasestr |
| extern char *gitstrcasestr(const char *haystack, const char *needle); |
| #endif |
| |
| #ifdef NO_STRLCPY |
| #define strlcpy gitstrlcpy |
| extern size_t gitstrlcpy(char *, const char *, size_t); |
| #endif |
| |
| #ifdef NO_STRTOUMAX |
| #define strtoumax gitstrtoumax |
| extern uintmax_t gitstrtoumax(const char *, char **, int); |
| #endif |
| |
| #ifdef NO_HSTRERROR |
| #define hstrerror githstrerror |
| extern const char *githstrerror(int herror); |
| #endif |
| |
| #ifdef NO_MEMMEM |
| #define memmem gitmemmem |
| void *gitmemmem(const void *haystack, size_t haystacklen, |
| const void *needle, size_t needlelen); |
| #endif |
| |
| #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 |
| |
| #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 |
| |
| #ifdef __GLIBC_PREREQ |
| #if __GLIBC_PREREQ(2, 1) |
| #define HAVE_STRCHRNUL |
| #endif |
| #endif |
| |
| #ifndef HAVE_STRCHRNUL |
| #define strchrnul gitstrchrnul |
| static inline char *gitstrchrnul(const char *s, int c) |
| { |
| while (*s && *s != c) |
| s++; |
| return (char *)s; |
| } |
| #endif |
| |
| extern void release_pack_memory(size_t, int); |
| |
| extern char *xstrdup(const char *str); |
| extern void *xmalloc(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) |
| { |
| return (size_t)len; |
| } |
| |
| static inline int has_extension(const char *filename, const char *ext) |
| { |
| size_t len = strlen(filename); |
| size_t extlen = strlen(ext); |
| return len > extlen && !memcmp(filename + len - extlen, ext, extlen); |
| } |
| |
| /* Sane ctype - no locale, and works with signed chars */ |
| #undef isascii |
| #undef isspace |
| #undef isdigit |
| #undef isalpha |
| #undef isalnum |
| #undef tolower |
| #undef toupper |
| 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) |
| |
| static inline int sane_case(int x, int high) |
| { |
| if (sane_istest(x, GIT_ALPHA)) |
| x = (x & ~0x20) | high; |
| return x; |
| } |
| |
| static inline int strtoul_ui(char const *s, int base, unsigned int *result) |
| { |
| unsigned long ul; |
| char *p; |
| |
| errno = 0; |
| ul = strtoul(s, &p, base); |
| if (errno || *p || p == s || (unsigned int) ul != ul) |
| return -1; |
| *result = ul; |
| 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 |