fdcb769916
* maint: format-patch: add MIME-Version header when we add content-type. Fixed link in user-manual import-tars: Use the "Link indicator" to identify directories git name-rev writes beyond the end of malloc() with large generations Documentation/branch: fix small typo in -D example
342 lines
7.6 KiB
C
342 lines
7.6 KiB
C
#ifndef GIT_COMPAT_UTIL_H
|
|
#define GIT_COMPAT_UTIL_H
|
|
|
|
#define _FILE_OFFSET_BITS 64
|
|
|
|
#ifndef FLEX_ARRAY
|
|
#if defined(__GNUC__) && (__GNUC__ < 3)
|
|
#define FLEX_ARRAY 0
|
|
#else
|
|
#define FLEX_ARRAY /* empty */
|
|
#endif
|
|
#endif
|
|
|
|
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
|
|
|
|
#ifdef __GNUC__
|
|
#define TYPEOF(x) (__typeof__(x))
|
|
#else
|
|
#define TYPEOF(x)
|
|
#endif
|
|
|
|
#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
|
|
|
|
/* 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__)
|
|
#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
|
|
|
|
#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 <sys/wait.h>
|
|
#include <fnmatch.h>
|
|
#include <sys/poll.h>
|
|
#include <sys/socket.h>
|
|
#include <assert.h>
|
|
#include <regex.h>
|
|
#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
|
|
#else
|
|
#undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */
|
|
#include <grp.h>
|
|
#define _ALL_SOURCE 1
|
|
#endif
|
|
|
|
#ifndef NO_ICONV
|
|
#include <iconv.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
|
|
|
|
#ifdef __GNUC__
|
|
#define NORETURN __attribute__((__noreturn__))
|
|
#else
|
|
#define NORETURN
|
|
#ifndef __attribute__
|
|
#define __attribute__(x)
|
|
#endif
|
|
#endif
|
|
|
|
/* General helper functions */
|
|
extern void usage(const char *err) NORETURN;
|
|
extern void die(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_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));
|
|
|
|
#ifdef NO_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);
|
|
|
|
/* 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 \
|
|
? 1 * 1024 * 1024 * 1024 \
|
|
: 32 * 1024 * 1024)
|
|
|
|
#endif /* NO_MMAP */
|
|
|
|
#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
|
|
|
|
#ifdef NO_SETENV
|
|
#define setenv gitsetenv
|
|
extern int gitsetenv(const char *, const 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
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
static inline ssize_t xwrite(int fd, const void *buf, size_t len)
|
|
{
|
|
ssize_t nr;
|
|
while (1) {
|
|
nr = write(fd, buf, len);
|
|
if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
|
|
continue;
|
|
return nr;
|
|
}
|
|
}
|
|
|
|
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 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 sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 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 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 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;
|
|
char *p;
|
|
|
|
errno = 0;
|
|
ul = strtoul(s, &p, base);
|
|
if (errno || *p || p == s || (unsigned int) ul != ul)
|
|
return -1;
|
|
*result = ul;
|
|
return 0;
|
|
}
|
|
|
|
#endif
|