diff options
Diffstat (limited to 'path.c')
| -rw-r--r-- | path.c | 183 |
1 files changed, 60 insertions, 123 deletions
@@ -122,118 +122,43 @@ char *git_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) +char *git_path_submodule(const char *path, const char *fmt, ...) { - 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; + char *pathname = get_pathname(); + struct strbuf buf = STRBUF_INIT; + const char *git_dir; + va_list args; + unsigned len; - len = strlen(pattern); + len = strlen(path); + if (len > PATH_MAX-100) + return bad_path; - if (len < 6 + suffix_len) { - errno = EINVAL; - return -1; - } + strbuf_addstr(&buf, path); + if (len && path[len-1] != '/') + strbuf_addch(&buf, '/'); + strbuf_addstr(&buf, ".git"); - if (strncmp(&pattern[len - 6 - suffix_len], "XXXXXX", 6)) { - errno = EINVAL; - return -1; + git_dir = read_gitfile(buf.buf); + if (git_dir) { + strbuf_reset(&buf); + strbuf_addstr(&buf, git_dir); } + strbuf_addch(&buf, '/'); - /* - * 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; -} + if (buf.len >= PATH_MAX) + return bad_path; + memcpy(pathname, buf.buf, buf.len + 1); -int git_mkstemp_mode(char *pattern, int mode) -{ - /* mkstemp is just mkstemps with no suffix */ - return git_mkstemps_mode(pattern, 0, mode); -} + strbuf_release(&buf); + len = strlen(pathname); -int gitmkstemps(char *pattern, int suffix_len) -{ - return git_mkstemps_mode(pattern, suffix_len, 0600); + va_start(args, fmt); + len += vsnprintf(pathname + len, PATH_MAX - len, fmt, args); + va_end(args); + if (len >= PATH_MAX) + return bad_path; + return cleanup_path(pathname); } int validate_headref(const char *path) @@ -358,7 +283,7 @@ return_null: * links. User relative paths are also returned as they are given, * except DWIM suffixing. */ -char *enter_repo(char *path, int strict) +const char *enter_repo(const char *path, int strict) { static char used_path[PATH_MAX]; static char validated_path[PATH_MAX]; @@ -368,18 +293,21 @@ char *enter_repo(char *path, int strict) if (!strict) { static const char *suffix[] = { - ".git/.git", "/.git", ".git", "", NULL, + "/.git", "", ".git/.git", ".git", NULL, }; + const char *gitfile; int len = strlen(path); int i; - while ((1 < len) && (path[len-1] == '/')) { - path[len-1] = 0; + while ((1 < len) && (path[len-1] == '/')) len--; - } + if (PATH_MAX <= len) return NULL; - if (path[0] == '~') { - char *newpath = expand_user_path(path); + strncpy(used_path, path, len); used_path[len] = 0 ; + strcpy(validated_path, used_path); + + if (used_path[0] == '~') { + char *newpath = expand_user_path(used_path); if (!newpath || (PATH_MAX - 10 < strlen(newpath))) { free(newpath); return NULL; @@ -391,24 +319,26 @@ char *enter_repo(char *path, int strict) * anyway. */ strcpy(used_path, newpath); free(newpath); - strcpy(validated_path, path); - path = used_path; } else if (PATH_MAX - 10 < len) return NULL; - else { - path = strcpy(used_path, path); - strcpy(validated_path, path); - } - len = strlen(path); + len = strlen(used_path); for (i = 0; suffix[i]; i++) { - strcpy(path + len, suffix[i]); - if (!access(path, F_OK)) { + struct stat st; + strcpy(used_path + len, suffix[i]); + if (!stat(used_path, &st) && + (S_ISREG(st.st_mode) || + (S_ISDIR(st.st_mode) && is_git_directory(used_path)))) { strcat(validated_path, suffix[i]); break; } } - if (!suffix[i] || chdir(path)) + if (!suffix[i]) + return NULL; + gitfile = read_gitfile(used_path) ; + if (gitfile) + strcpy(used_path, gitfile); + if (chdir(used_path)) return NULL; path = validated_path; } @@ -417,7 +347,7 @@ char *enter_repo(char *path, int strict) if (access("objects", X_OK) == 0 && access("refs", X_OK) == 0 && validate_headref("HEAD") == 0) { - setenv(GIT_DIR_ENVIRONMENT, ".", 1); + set_git_dir("."); check_repository_format(); return path; } @@ -472,7 +402,7 @@ int set_shared_perm(const char *path, int mode) return 0; } -const char *make_relative_path(const char *abs, const char *base) +const char *relative_path(const char *abs, const char *base) { static char buf[PATH_MAX + 1]; int i = 0, j = 0; @@ -730,3 +660,10 @@ int daemon_avoid_alias(const char *p) } } } + +int offset_1st_component(const char *path) +{ + if (has_dos_drive_prefix(path)) + return 2 + is_dir_sep(path[2]); + return is_dir_sep(path[0]); +} |