diff options
Diffstat (limited to 'setup.c')
| -rw-r--r-- | setup.c | 206 |
1 files changed, 77 insertions, 129 deletions
@@ -4,92 +4,6 @@ static int inside_git_dir = -1; static int inside_work_tree = -1; -static int sanitary_path_copy(char *dst, const char *src) -{ - char *dst0; - - if (has_dos_drive_prefix(src)) { - *dst++ = *src++; - *dst++ = *src++; - } - dst0 = dst; - - if (is_dir_sep(*src)) { - *dst++ = '/'; - while (is_dir_sep(*src)) - src++; - } - - for (;;) { - char c = *src; - - /* - * A path component that begins with . could be - * special: - * (1) "." and ends -- ignore and terminate. - * (2) "./" -- ignore them, eat slash and continue. - * (3) ".." and ends -- strip one and terminate. - * (4) "../" -- strip one, eat slash and continue. - */ - if (c == '.') { - if (!src[1]) { - /* (1) */ - src++; - } else if (is_dir_sep(src[1])) { - /* (2) */ - src += 2; - while (is_dir_sep(*src)) - src++; - continue; - } else if (src[1] == '.') { - if (!src[2]) { - /* (3) */ - src += 2; - goto up_one; - } else if (is_dir_sep(src[2])) { - /* (4) */ - src += 3; - while (is_dir_sep(*src)) - src++; - goto up_one; - } - } - } - - /* copy up to the next '/', and eat all '/' */ - while ((c = *src++) != '\0' && !is_dir_sep(c)) - *dst++ = c; - if (is_dir_sep(c)) { - *dst++ = '/'; - while (is_dir_sep(c)) - c = *src++; - src--; - } else if (!c) - break; - continue; - - up_one: - /* - * dst0..dst is prefix portion, and dst[-1] is '/'; - * go up one level. - */ - dst -= 2; /* go past trailing '/' if any */ - if (dst < dst0) - return -1; - while (1) { - if (dst <= dst0) - break; - c = *dst--; - if (c == '/') { /* MinGW: cannot be '\\' anymore */ - dst += 2; - break; - } - } - } - *dst = '\0'; - return 0; -} - const char *prefix_path(const char *prefix, int len, const char *path) { const char *orig = path; @@ -101,18 +15,19 @@ const char *prefix_path(const char *prefix, int len, const char *path) memcpy(sanitized, prefix, len); strcpy(sanitized + len, path); } - if (sanitary_path_copy(sanitized, sanitized)) + if (normalize_path_copy(sanitized, sanitized)) goto error_out; if (is_absolute_path(orig)) { + size_t len, total; const char *work_tree = get_git_work_tree(); - size_t len = strlen(work_tree); - size_t total = strlen(sanitized) + 1; + if (!work_tree) + goto error_out; + len = strlen(work_tree); + total = strlen(sanitized) + 1; if (strncmp(sanitized, work_tree, len) || (sanitized[len] != '\0' && sanitized[len] != '/')) { error_out: - error("'%s' is outside repository", orig); - free(sanitized); - return NULL; + die("'%s' is outside repository", orig); } if (sanitized[len] == '/') len++; @@ -129,7 +44,7 @@ const char *prefix_path(const char *prefix, int len, const char *path) const char *prefix_filename(const char *pfx, int pfx_len, const char *arg) { static char path[PATH_MAX]; -#ifndef __MINGW32__ +#ifndef WIN32 if (!pfx || !*pfx || is_absolute_path(arg)) return arg; memcpy(path, pfx, pfx_len); @@ -149,6 +64,31 @@ const char *prefix_filename(const char *pfx, int pfx_len, const char *arg) return path; } +int check_filename(const char *prefix, const char *arg) +{ + const char *name; + struct stat st; + + name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg; + if (!lstat(name, &st)) + return 1; /* file exists */ + if (errno == ENOENT || errno == ENOTDIR) + return 0; /* file does not exist */ + die_errno("failed to stat '%s'", arg); +} + +static void NORETURN die_verify_filename(const char *prefix, const char *arg) +{ + unsigned char sha1[20]; + unsigned mode; + /* try a detailed diagnostic ... */ + get_sha1_with_mode_1(arg, sha1, &mode, 0, prefix); + /* ... or fall back the most general message. */ + die("ambiguous argument '%s': unknown revision or path not in the working tree.\n" + "Use '--' to separate paths from revisions", arg); + +} + /* * Verify a filename that we got as an argument for a pathspec * entry. Note that a filename that begins with "-" never verifies @@ -158,18 +98,11 @@ const char *prefix_filename(const char *pfx, int pfx_len, const char *arg) */ void verify_filename(const char *prefix, const char *arg) { - const char *name; - struct stat st; - if (*arg == '-') die("bad flag '%s' used after filename", arg); - name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg; - if (!lstat(name, &st)) + if (check_filename(prefix, arg)) return; - if (errno == ENOENT) - die("ambiguous argument '%s': unknown revision or path not in the working tree.\n" - "Use '--' to separate paths from revisions", arg); - die("'%s': %s", arg, strerror(errno)); + die_verify_filename(prefix, arg); } /* @@ -179,19 +112,14 @@ void verify_filename(const char *prefix, const char *arg) */ void verify_non_filename(const char *prefix, const char *arg) { - const char *name; - struct stat st; - if (!is_inside_work_tree() || is_inside_git_dir()) return; if (*arg == '-') return; /* flag */ - name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg; - if (!lstat(name, &st)) - die("ambiguous argument '%s': both revision and filename\n" - "Use '--' to separate filenames from revisions", arg); - if (errno != ENOENT && errno != ENOTDIR) - die("'%s': %s", arg, strerror(errno)); + if (!check_filename(prefix, arg)) + return; + die("ambiguous argument '%s': both revision and filename\n" + "Use '--' to separate filenames from revisions", arg); } const char **get_pathspec(const char *prefix, const char **pathspec) @@ -216,10 +144,7 @@ const char **get_pathspec(const char *prefix, const char **pathspec) prefixlen = prefix ? strlen(prefix) : 0; while (*src) { const char *p = prefix_path(prefix, prefixlen, *src); - if (p) - *(dst++) = p; - else - exit(128); /* error message already given */ + *(dst++) = p; src++; } *dst = NULL; @@ -281,7 +206,7 @@ int is_inside_work_tree(void) } /* - * set_work_tree() is only ever called if you set GIT_DIR explicitely. + * set_work_tree() is only ever called if you set GIT_DIR explicitly. * The old behaviour (which we retain here) is to set the work tree root * to the cwd, unless overridden by the config, the command line, or * GIT_WORK_TREE. @@ -338,6 +263,8 @@ static int check_repository_format_gently(int *nongit_ok) const char *read_gitfile_gently(const char *path) { char *buf; + char *dir; + const char *slash; struct stat st; int fd; size_t len; @@ -348,7 +275,7 @@ const char *read_gitfile_gently(const char *path) return NULL; fd = open(path, O_RDONLY); if (fd < 0) - die("Error opening %s: %s", path, strerror(errno)); + die_errno("Error opening '%s'", path); buf = xmalloc(st.st_size + 1); len = read_in_full(fd, buf, st.st_size); close(fd); @@ -362,9 +289,23 @@ const char *read_gitfile_gently(const char *path) if (len < 9) die("No path in gitfile: %s", path); buf[len] = '\0'; - if (!is_git_directory(buf + 8)) - die("Not a git repository: %s", buf + 8); - path = make_absolute_path(buf + 8); + dir = buf + 8; + + if (!is_absolute_path(dir) && (slash = strrchr(path, '/'))) { + size_t pathlen = slash+1 - path; + size_t dirlen = pathlen + len - 8; + dir = xmalloc(dirlen + 1); + strncpy(dir, path, pathlen); + strncpy(dir + pathlen, buf + 8, len - 8); + dir[dirlen] = '\0'; + free(buf); + buf = dir; + } + + if (!is_git_directory(dir)) + die("Not a git repository: %s", dir); + path = make_absolute_path(dir); + free(buf); return path; } @@ -418,7 +359,7 @@ const char *setup_git_directory_gently(int *nongit_ok) return NULL; set_git_dir(make_absolute_path(gitdirenv)); if (chdir(work_tree_env) < 0) - die ("Could not chdir to %s", work_tree_env); + die_errno ("Could not chdir to '%s'", work_tree_env); strcat(buffer, "/"); return retval; } @@ -430,7 +371,7 @@ const char *setup_git_directory_gently(int *nongit_ok) } if (!getcwd(cwd, sizeof(cwd)-1)) - die("Unable to read current working directory"); + die_errno("Unable to read current working directory"); ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs); if (ceil_offset < 0 && has_dos_drive_prefix(cwd)) @@ -461,7 +402,11 @@ const char *setup_git_directory_gently(int *nongit_ok) inside_git_dir = 1; if (!work_tree_env) inside_work_tree = 0; - setenv(GIT_DIR_ENVIRONMENT, ".", 1); + if (offset != len) { + cwd[offset] = '\0'; + set_git_dir(cwd); + } else + set_git_dir("."); check_repository_format_gently(nongit_ok); return NULL; } @@ -469,13 +414,14 @@ const char *setup_git_directory_gently(int *nongit_ok) if (offset <= ceil_offset) { if (nongit_ok) { if (chdir(cwd)) - die("Cannot come back to cwd"); + die_errno("Cannot come back to cwd"); *nongit_ok = 1; return NULL; } - die("Not a git repository"); + die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT); } - chdir(".."); + if (chdir("..")) + die_errno("Cannot change to '%s/..'", cwd); } inside_git_dir = 0; @@ -520,7 +466,7 @@ int git_config_perm(const char *var, const char *value) /* * Treat values 0, 1 and 2 as compatibility cases, otherwise it is - * a chmod value. + * a chmod value to restrict to. */ switch (i) { case PERM_UMASK: /* 0 */ @@ -542,7 +488,7 @@ int git_config_perm(const char *var, const char *value) * Mask filemode value. Others can not get write permission. * x flags for directories are handled separately. */ - return i & 0666; + return -(i & 0666); } int check_repository_format_version(const char *var, const char *value, void *cb) @@ -579,8 +525,10 @@ const char *setup_git_directory(void) static char buffer[PATH_MAX + 1]; char *rel; if (retval && chdir(retval)) - die ("Could not jump back into original cwd"); + die_errno ("Could not jump back into original cwd"); rel = get_relative_cwd(buffer, PATH_MAX, get_git_work_tree()); + if (rel && *rel && chdir(get_git_work_tree())) + die_errno ("Could not jump to working directory"); return rel && *rel ? strcat(rel, "/") : NULL; } |