diff options
Diffstat (limited to 'git-compat-util.h')
| -rw-r--r-- | git-compat-util.h | 217 |
1 files changed, 204 insertions, 13 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index 079cbe9440..5ef8ff76f6 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -7,7 +7,7 @@ /* * See if our compiler is known to support flexible array members. */ -#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) +#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580)) # define FLEX_ARRAY /* empty */ #elif defined(__GNUC__) # if (__GNUC__ >= 3) @@ -26,6 +26,25 @@ #endif #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) +#define bitsizeof(x) (CHAR_BIT * sizeof(x)) + +#define maximum_signed_value_of_type(a) \ + (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a))) + +#define maximum_unsigned_value_of_type(a) \ + (UINTMAX_MAX >> (bitsizeof(uintmax_t) - bitsizeof(a))) + +/* + * Signed integer overflow is undefined in C, so here's a helper macro + * to detect if the sum of two integers will overflow. + * + * Requires: a >= 0, typeof(a) equals typeof(b) + */ +#define signed_add_overflows(a, b) \ + ((b) > maximum_signed_value_of_type(a) - (a)) + +#define unsigned_add_overflows(a, b) \ + ((b) > maximum_unsigned_value_of_type(a) - (a)) #ifdef __GNUC__ #define TYPEOF(x) (__typeof__(x)) @@ -33,19 +52,43 @@ #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__) && !defined(__USLC__) && !defined(_M_UNIX) +#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) && !defined(__DragonFly__) #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> @@ -67,11 +110,18 @@ #include <assert.h> #include <regex.h> #include <utime.h> +#include <syslog.h> +#ifndef NO_SYS_POLL_H +#include <sys/poll.h> +#else +#include <poll.h> +#endif #ifndef __MINGW32__ #include <sys/wait.h> -#include <sys/poll.h> +#include <sys/resource.h> #include <sys/socket.h> #include <sys/ioctl.h> +#include <termios.h> #ifndef NO_SYS_SELECT_H #include <sys/select.h> #endif @@ -80,7 +130,11 @@ #include <arpa/inet.h> #include <netdb.h> #include <pwd.h> +#ifndef NO_INTTYPES_H #include <inttypes.h> +#else +#include <stdint.h> +#endif #if defined(__CYGWIN__) #undef _XOPEN_SOURCE #include <grp.h> @@ -95,6 +149,16 @@ /* 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> @@ -124,10 +188,21 @@ #define PRIx32 "x" #endif +#ifndef PRIo32 +#define PRIo32 "o" +#endif + #ifndef PATH_SEP #define PATH_SEP ':' #endif +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif +#ifndef _PATH_DEFPATH +#define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin" +#endif + #ifndef STRIP_EXTENSION #define STRIP_EXTENSION "" #endif @@ -140,25 +215,44 @@ #define is_dir_sep(c) ((c) == '/') #endif -#ifdef __GNUC__ +#ifndef find_last_dir_sep +#define find_last_dir_sep(path) strrchr(path, '/') +#endif + +#if __HP_cc >= 61000 +#define NORETURN __attribute__((noreturn)) +#define NORETURN_PTR +#elif defined(__GNUC__) && !defined(NO_NORETURN) #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 void vreportf(const char *prefix, const char *err, va_list params); +extern void vwritef(int fd, const char *prefix, const char *err, va_list params); +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_die_routine(void (*routine)(const char *err, va_list params) NORETURN); +extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)); +extern void set_error_routine(void (*routine)(const char *err, va_list params)); extern int prefixcmp(const char *str, const char *prefix); -extern time_t tm_to_time_t(const struct tm *tm); +extern int suffixcmp(const char *str, const char *suffix); static inline const char *skip_prefix(const char *str, const char *prefix) { @@ -166,13 +260,12 @@ static inline const char *skip_prefix(const char *str, const char *prefix) return strncmp(str, prefix, len) ? NULL : str + len; } -#ifdef NO_MMAP +#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 @@ -180,13 +273,19 @@ static inline const char *skip_prefix(const char *str, const char *prefix) 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 \ @@ -195,6 +294,10 @@ extern int git_munmap(void *start, size_t length); #endif /* NO_MMAP */ +#ifndef MAP_FAILED +#define MAP_FAILED ((void *)-1) +#endif + #ifdef NO_ST_BLOCKS_IN_STRUCT_STAT #define on_disk_bytes(st) ((st).st_size) #else @@ -225,6 +328,11 @@ extern int gitsetenv(const char *, const char *, int); 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 *); @@ -245,6 +353,11 @@ extern size_t gitstrlcpy(char *, const char *, size_t); extern uintmax_t gitstrtoumax(const char *, char **, int); #endif +#ifdef NO_STRTOK_R +#define strtok_r gitstrtok_r +extern char *gitstrtok_r(char *s, const char *delim, char **save_ptr); +#endif + #ifdef NO_HSTRERROR #define hstrerror githstrerror extern const char *githstrerror(int herror); @@ -276,6 +389,7 @@ extern int git_vsnprintf(char *str, size_t maxsize, #ifdef __GLIBC_PREREQ #if __GLIBC_PREREQ(2, 1) #define HAVE_STRCHRNUL +#define HAVE_MEMPCPY #endif #endif @@ -289,10 +403,30 @@ static inline char *gitstrchrnul(const char *s, int c) } #endif +#ifndef HAVE_MEMPCPY +#define mempcpy gitmempcpy +static inline void *gitmempcpy(void *dest, const void *src, size_t n) +{ + return (char *)memcpy(dest, src, n) + n; +} +#endif + +#ifdef NO_INET_PTON +int inet_pton(int af, const char *src, void *dst); +#endif + +#ifdef NO_INET_NTOP +const char *inet_ntop(int af, const void *src, char *dst, size_t size); +#endif + extern void release_pack_memory(size_t, int); +typedef void (*try_to_free_t)(size_t); +extern try_to_free_t set_try_to_free_routine(try_to_free_t); + 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); @@ -303,9 +437,14 @@ 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 xmkstemp_mode(char *template, int mode); +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) { + if (len > (size_t) len) + die("Cannot handle files this big"); return (size_t)len; } @@ -317,6 +456,7 @@ 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 @@ -329,7 +469,9 @@ extern unsigned char sane_ctype[256]; #define GIT_ALPHA 0x04 #define GIT_GLOB_SPECIAL 0x08 #define GIT_REGEX_SPECIAL 0x10 +#define GIT_PATHSPEC_MAGIC 0x20 #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) @@ -338,6 +480,7 @@ extern unsigned char sane_ctype[256]; #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) +#define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC) static inline int sane_case(int x, int high) { @@ -384,4 +527,52 @@ void git_qsort(void *base, size_t nmemb, size_t size, # 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 + +#ifndef va_copy +/* + * Since an obvious implementation of va_list would be to make it a + * pointer into the stack frame, a simple assignment will work on + * many systems. But let's try to be more portable. + */ +#ifdef __va_copy +#define va_copy(dst, src) __va_copy(dst, src) +#else +#define va_copy(dst, src) ((dst) = (src)) +#endif +#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); +/* + * Likewise for rmdir(2). + */ +int rmdir_or_warn(const char *path); +/* + * Calls the correct function out of {unlink,rmdir}_or_warn based on + * the supplied file mode. + */ +int remove_or_warn(unsigned int mode, const char *path); + #endif |