diff options
| -rw-r--r-- | path.c | 113 | ||||
| -rw-r--r-- | wrapper.c | 113 |
2 files changed, 113 insertions, 113 deletions
@@ -161,119 +161,6 @@ char *git_path_submodule(const char *path, const char *fmt, ...) return cleanup_path(pathname); } -/* git_mkstemp() - create tmp file honoring TMPDIR variable */ -int git_mkstemp(char *path, size_t len, const char *template) -{ - const char *tmp; - size_t n; - - tmp = getenv("TMPDIR"); - if (!tmp) - tmp = "/tmp"; - n = snprintf(path, len, "%s/%s", tmp, template); - if (len <= n) { - errno = ENAMETOOLONG; - return -1; - } - return mkstemp(path); -} - -/* git_mkstemps() - create tmp file with suffix honoring TMPDIR variable. */ -int git_mkstemps(char *path, size_t len, const char *template, int suffix_len) -{ - const char *tmp; - size_t n; - - tmp = getenv("TMPDIR"); - if (!tmp) - tmp = "/tmp"; - n = snprintf(path, len, "%s/%s", tmp, template); - if (len <= n) { - errno = ENAMETOOLONG; - return -1; - } - return mkstemps(path, suffix_len); -} - -/* Adapted from libiberty's mkstemp.c. */ - -#undef TMP_MAX -#define TMP_MAX 16384 - -int git_mkstemps_mode(char *pattern, int suffix_len, int mode) -{ - static const char letters[] = - "abcdefghijklmnopqrstuvwxyz" - "ABCDEFGHIJKLMNOPQRSTUVWXYZ" - "0123456789"; - static const int num_letters = 62; - uint64_t value; - struct timeval tv; - char *template; - size_t len; - int fd, count; - - len = strlen(pattern); - - if (len < 6 + suffix_len) { - errno = EINVAL; - return -1; - } - - if (strncmp(&pattern[len - 6 - suffix_len], "XXXXXX", 6)) { - errno = EINVAL; - return -1; - } - - /* - * Replace pattern's XXXXXX characters with randomness. - * Try TMP_MAX different filenames. - */ - gettimeofday(&tv, NULL); - value = ((size_t)(tv.tv_usec << 16)) ^ tv.tv_sec ^ getpid(); - template = &pattern[len - 6 - suffix_len]; - for (count = 0; count < TMP_MAX; ++count) { - uint64_t v = value; - /* Fill in the random bits. */ - template[0] = letters[v % num_letters]; v /= num_letters; - template[1] = letters[v % num_letters]; v /= num_letters; - template[2] = letters[v % num_letters]; v /= num_letters; - template[3] = letters[v % num_letters]; v /= num_letters; - template[4] = letters[v % num_letters]; v /= num_letters; - template[5] = letters[v % num_letters]; v /= num_letters; - - fd = open(pattern, O_CREAT | O_EXCL | O_RDWR, mode); - if (fd > 0) - return fd; - /* - * Fatal error (EPERM, ENOSPC etc). - * It doesn't make sense to loop. - */ - if (errno != EEXIST) - break; - /* - * This is a random value. It is only necessary that - * the next TMP_MAX values generated by adding 7777 to - * VALUE are different with (module 2^32). - */ - value += 7777; - } - /* We return the null string if we can't find a unique file name. */ - pattern[0] = '\0'; - return -1; -} - -int git_mkstemp_mode(char *pattern, int mode) -{ - /* mkstemp is just mkstemps with no suffix */ - return git_mkstemps_mode(pattern, 0, mode); -} - -int gitmkstemps(char *pattern, int suffix_len) -{ - return git_mkstemps_mode(pattern, suffix_len, 0600); -} - int validate_headref(const char *path) { struct stat st; @@ -204,6 +204,119 @@ int xmkstemp(char *template) return fd; } +/* git_mkstemp() - create tmp file honoring TMPDIR variable */ +int git_mkstemp(char *path, size_t len, const char *template) +{ + const char *tmp; + size_t n; + + tmp = getenv("TMPDIR"); + if (!tmp) + tmp = "/tmp"; + n = snprintf(path, len, "%s/%s", tmp, template); + if (len <= n) { + errno = ENAMETOOLONG; + return -1; + } + return mkstemp(path); +} + +/* git_mkstemps() - create tmp file with suffix honoring TMPDIR variable. */ +int git_mkstemps(char *path, size_t len, const char *template, int suffix_len) +{ + const char *tmp; + size_t n; + + tmp = getenv("TMPDIR"); + if (!tmp) + tmp = "/tmp"; + n = snprintf(path, len, "%s/%s", tmp, template); + if (len <= n) { + errno = ENAMETOOLONG; + return -1; + } + return mkstemps(path, suffix_len); +} + +/* Adapted from libiberty's mkstemp.c. */ + +#undef TMP_MAX +#define TMP_MAX 16384 + +int git_mkstemps_mode(char *pattern, int suffix_len, int mode) +{ + static const char letters[] = + "abcdefghijklmnopqrstuvwxyz" + "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "0123456789"; + static const int num_letters = 62; + uint64_t value; + struct timeval tv; + char *template; + size_t len; + int fd, count; + + len = strlen(pattern); + + if (len < 6 + suffix_len) { + errno = EINVAL; + return -1; + } + + if (strncmp(&pattern[len - 6 - suffix_len], "XXXXXX", 6)) { + errno = EINVAL; + return -1; + } + + /* + * Replace pattern's XXXXXX characters with randomness. + * Try TMP_MAX different filenames. + */ + gettimeofday(&tv, NULL); + value = ((size_t)(tv.tv_usec << 16)) ^ tv.tv_sec ^ getpid(); + template = &pattern[len - 6 - suffix_len]; + for (count = 0; count < TMP_MAX; ++count) { + uint64_t v = value; + /* Fill in the random bits. */ + template[0] = letters[v % num_letters]; v /= num_letters; + template[1] = letters[v % num_letters]; v /= num_letters; + template[2] = letters[v % num_letters]; v /= num_letters; + template[3] = letters[v % num_letters]; v /= num_letters; + template[4] = letters[v % num_letters]; v /= num_letters; + template[5] = letters[v % num_letters]; v /= num_letters; + + fd = open(pattern, O_CREAT | O_EXCL | O_RDWR, mode); + if (fd > 0) + return fd; + /* + * Fatal error (EPERM, ENOSPC etc). + * It doesn't make sense to loop. + */ + if (errno != EEXIST) + break; + /* + * This is a random value. It is only necessary that + * the next TMP_MAX values generated by adding 7777 to + * VALUE are different with (module 2^32). + */ + value += 7777; + } + /* We return the null string if we can't find a unique file name. */ + pattern[0] = '\0'; + return -1; +} + +int git_mkstemp_mode(char *pattern, int mode) +{ + /* mkstemp is just mkstemps with no suffix */ + return git_mkstemps_mode(pattern, 0, mode); +} + +int gitmkstemps(char *pattern, int suffix_len) +{ + return git_mkstemps_mode(pattern, suffix_len, 0600); +} + int xmkstemp_mode(char *template, int mode) { int fd; |