static int inside_git_dir = -1;
static int inside_work_tree = -1;
+static int work_tree_config_is_bogus;
-static char *prefix_path_gently(const char *prefix, int len, const char *path)
+/*
+ * The input parameter must contain an absolute path, and it must already be
+ * normalized.
+ *
+ * Find the part of an absolute path that lies inside the work tree by
+ * dereferencing symlinks outside the work tree, for example:
+ * /dir1/repo/dir2/file (work tree is /dir1/repo) -> dir2/file
+ * /dir/file (work tree is /) -> dir/file
+ * /dir/symlink1/symlink2 (symlink1 points to work tree) -> symlink2
+ * /dir/repolink/file (repolink points to /dir/repo) -> file
+ * /dir/repo (exactly equal to work tree) -> (empty string)
+ */
+static int abspath_part_inside_repo(char *path)
+{
+ size_t len;
+ size_t wtlen;
+ char *path0;
+ int off;
+ const char *work_tree = get_git_work_tree();
+
+ if (!work_tree)
+ return -1;
+ wtlen = strlen(work_tree);
+ len = strlen(path);
+ off = offset_1st_component(path);
+
+ /* check if work tree is already the prefix */
+ if (wtlen <= len && !strncmp(path, work_tree, wtlen)) {
+ if (path[wtlen] == '/') {
+ memmove(path, path + wtlen + 1, len - wtlen);
+ return 0;
+ } else if (path[wtlen - 1] == '/' || path[wtlen] == '\0') {
+ /* work tree is the root, or the whole path */
+ memmove(path, path + wtlen, len - wtlen + 1);
+ return 0;
+ }
+ /* work tree might match beginning of a symlink to work tree */
+ off = wtlen;
+ }
+ path0 = path;
+ path += off;
+
+ /* check each '/'-terminated level */
+ while (*path) {
+ path++;
+ if (*path == '/') {
+ *path = '\0';
+ if (strcmp(real_path(path0), work_tree) == 0) {
+ memmove(path0, path + 1, len - (path - path0));
+ return 0;
+ }
+ *path = '/';
+ }
+ }
+
+ /* check whole path */
+ if (strcmp(real_path(path0), work_tree) == 0) {
+ *path0 = '\0';
+ return 0;
+ }
+
+ return -1;
+}
+
+/*
+ * Normalize "path", prepending the "prefix" for relative paths. If
+ * remaining_prefix is not NULL, return the actual prefix still
+ * remains in the path. For example, prefix = sub1/sub2/ and path is
+ *
+ * foo -> sub1/sub2/foo (full prefix)
+ * ../foo -> sub1/foo (remaining prefix is sub1/)
+ * ../../bar -> bar (no remaining prefix)
+ * ../../sub1/sub2/foo -> sub1/sub2/foo (but no remaining prefix)
+ * `pwd`/../bar -> sub1/bar (no remaining prefix)
+ */
+char *prefix_path_gently(const char *prefix, int len,
+ int *remaining_prefix, const char *path)
{
const char *orig = path;
char *sanitized;
if (is_absolute_path(orig)) {
- const char *temp = real_path(path);
- sanitized = xmalloc(len + strlen(temp) + 1);
- strcpy(sanitized, temp);
+ sanitized = xmalloc(strlen(path) + 1);
+ if (remaining_prefix)
+ *remaining_prefix = 0;
+ if (normalize_path_copy_len(sanitized, path, remaining_prefix)) {
+ free(sanitized);
+ return NULL;
+ }
+ if (abspath_part_inside_repo(sanitized)) {
+ free(sanitized);
+ return NULL;
+ }
} else {
sanitized = xmalloc(len + strlen(path) + 1);
if (len)
memcpy(sanitized, prefix, len);
strcpy(sanitized + len, path);
- }
- if (normalize_path_copy(sanitized, sanitized))
- goto error_out;
- if (is_absolute_path(orig)) {
- size_t root_len, len, total;
- const char *work_tree = get_git_work_tree();
- if (!work_tree)
- goto error_out;
- len = strlen(work_tree);
- root_len = offset_1st_component(work_tree);
- total = strlen(sanitized) + 1;
- if (strncmp(sanitized, work_tree, len) ||
- (len > root_len && sanitized[len] != '\0' && sanitized[len] != '/')) {
- error_out:
+ if (remaining_prefix)
+ *remaining_prefix = len;
+ if (normalize_path_copy_len(sanitized, sanitized, remaining_prefix)) {
free(sanitized);
return NULL;
}
- if (sanitized[len] == '/')
- len++;
- memmove(sanitized, sanitized + len, total - len);
}
return sanitized;
}
char *prefix_path(const char *prefix, int len, const char *path)
{
- char *r = prefix_path_gently(prefix, len, path);
+ char *r = prefix_path_gently(prefix, len, NULL, path);
if (!r)
die("'%s' is outside repository", path);
return r;
int path_inside_repo(const char *prefix, const char *path)
{
int len = prefix ? strlen(prefix) : 0;
- char *r = prefix_path_gently(prefix, len, path);
+ char *r = prefix_path_gently(prefix, len, NULL, path);
if (r) {
free(r);
return 1;
const char *name;
struct stat st;
- if (!prefixcmp(arg, ":/")) {
+ if (starts_with(arg, ":/")) {
if (arg[2] == '\0') /* ":/" is root dir, always exists */
return 1;
name = arg + 2;
- } else if (prefix)
+ } else if (!no_wildcard(arg))
+ return 1;
+ else if (prefix)
name = prefix_filename(prefix, strlen(prefix), arg);
else
name = arg;
"'git <command> [<revision>...] -- [<file>...]'", arg);
}
-/*
- * Magic pathspec
- *
- * NEEDSWORK: These need to be moved to dir.h or even to a new
- * pathspec.h when we restructure get_pathspec() users to use the
- * "struct pathspec" interface.
- *
- * Possible future magic semantics include stuff like:
- *
- * { PATHSPEC_NOGLOB, '!', "noglob" },
- * { PATHSPEC_ICASE, '\0', "icase" },
- * { PATHSPEC_RECURSIVE, '*', "recursive" },
- * { PATHSPEC_REGEXP, '\0', "regexp" },
- *
- */
-#define PATHSPEC_FROMTOP (1<<0)
-
-static struct pathspec_magic {
- unsigned bit;
- char mnemonic; /* this cannot be ':'! */
- const char *name;
-} pathspec_magic[] = {
- { PATHSPEC_FROMTOP, '/', "top" },
-};
-
-/*
- * Take an element of a pathspec and check for magic signatures.
- * Append the result to the prefix.
- *
- * For now, we only parse the syntax and throw out anything other than
- * "top" magic.
- *
- * NEEDSWORK: This needs to be rewritten when we start migrating
- * get_pathspec() users to use the "struct pathspec" interface. For
- * example, a pathspec element may be marked as case-insensitive, but
- * the prefix part must always match literally, and a single stupid
- * string cannot express such a case.
- */
-static const char *prefix_pathspec(const char *prefix, int prefixlen, const char *elt)
-{
- unsigned magic = 0;
- const char *copyfrom = elt;
- int i;
-
- if (elt[0] != ':') {
- ; /* nothing to do */
- } else if (elt[1] == '(') {
- /* longhand */
- const char *nextat;
- for (copyfrom = elt + 2;
- *copyfrom && *copyfrom != ')';
- copyfrom = nextat) {
- size_t len = strcspn(copyfrom, ",)");
- if (copyfrom[len] == ',')
- nextat = copyfrom + len + 1;
- else
- /* handle ')' and '\0' */
- nextat = copyfrom + len;
- if (!len)
- continue;
- for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
- if (strlen(pathspec_magic[i].name) == len &&
- !strncmp(pathspec_magic[i].name, copyfrom, len)) {
- magic |= pathspec_magic[i].bit;
- break;
- }
- if (ARRAY_SIZE(pathspec_magic) <= i)
- die("Invalid pathspec magic '%.*s' in '%s'",
- (int) len, copyfrom, elt);
- }
- if (*copyfrom != ')')
- die("Missing ')' at the end of pathspec magic in '%s'", elt);
- copyfrom++;
- } else {
- /* shorthand */
- for (copyfrom = elt + 1;
- *copyfrom && *copyfrom != ':';
- copyfrom++) {
- char ch = *copyfrom;
-
- if (!is_pathspec_magic(ch))
- break;
- for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
- if (pathspec_magic[i].mnemonic == ch) {
- magic |= pathspec_magic[i].bit;
- break;
- }
- if (ARRAY_SIZE(pathspec_magic) <= i)
- die("Unimplemented pathspec magic '%c' in '%s'",
- ch, elt);
- }
- if (*copyfrom == ':')
- copyfrom++;
- }
-
- if (magic & PATHSPEC_FROMTOP)
- return xstrdup(copyfrom);
- else
- return prefix_path(prefix, prefixlen, copyfrom);
-}
-
-/*
- * N.B. get_pathspec() is deprecated in favor of the "struct pathspec"
- * based interface - see pathspec_magic above.
- *
- * Arguments:
- * - prefix - a path relative to the root of the working tree
- * - pathspec - a list of paths underneath the prefix path
- *
- * Iterates over pathspec, prepending each path with prefix,
- * and return the resulting list.
- *
- * If pathspec is empty, return a singleton list containing prefix.
- *
- * If pathspec and prefix are both empty, return an empty list.
- *
- * This is typically used by built-in commands such as add.c, in order
- * to normalize argv arguments provided to the built-in into a list of
- * paths to process, all relative to the root of the working tree.
- */
-const char **get_pathspec(const char *prefix, const char **pathspec)
+int get_common_dir(struct strbuf *sb, const char *gitdir)
{
- const char *entry = *pathspec;
- const char **src, **dst;
- int prefixlen;
-
- if (!prefix && !entry)
- return NULL;
-
- if (!entry) {
- static const char *spec[2];
- spec[0] = prefix;
- spec[1] = NULL;
- return spec;
- }
-
- /* Otherwise we have to re-write the entries.. */
- src = pathspec;
- dst = pathspec;
- prefixlen = prefix ? strlen(prefix) : 0;
- while (*src) {
- *(dst++) = prefix_pathspec(prefix, prefixlen, *src);
- src++;
+ struct strbuf data = STRBUF_INIT;
+ struct strbuf path = STRBUF_INIT;
+ const char *git_common_dir = getenv(GIT_COMMON_DIR_ENVIRONMENT);
+ int ret = 0;
+ if (git_common_dir) {
+ strbuf_addstr(sb, git_common_dir);
+ return 1;
}
- *dst = NULL;
- if (!*pathspec)
- return NULL;
- return pathspec;
+ strbuf_addf(&path, "%s/commondir", gitdir);
+ if (file_exists(path.buf)) {
+ if (strbuf_read_file(&data, path.buf, 0) <= 0)
+ die_errno(_("failed to read %s"), path.buf);
+ while (data.len && (data.buf[data.len - 1] == '\n' ||
+ data.buf[data.len - 1] == '\r'))
+ data.len--;
+ data.buf[data.len] = '\0';
+ strbuf_reset(&path);
+ if (!is_absolute_path(data.buf))
+ strbuf_addf(&path, "%s/", gitdir);
+ strbuf_addbuf(&path, &data);
+ strbuf_addstr(sb, real_path(path.buf));
+ ret = 1;
+ } else
+ strbuf_addstr(sb, gitdir);
+ strbuf_release(&data);
+ strbuf_release(&path);
+ return ret;
}
/*
*/
int is_git_directory(const char *suspect)
{
- char path[PATH_MAX];
- size_t len = strlen(suspect);
+ struct strbuf path = STRBUF_INIT;
+ int ret = 0;
+ size_t len;
+
+ /* Check worktree-related signatures */
+ strbuf_addf(&path, "%s/HEAD", suspect);
+ if (validate_headref(path.buf))
+ goto done;
- if (PATH_MAX <= len + strlen("/objects"))
- die("Too long path: %.*s", 60, suspect);
- strcpy(path, suspect);
+ strbuf_reset(&path);
+ get_common_dir(&path, suspect);
+ len = path.len;
+
+ /* Check non-worktree-related signatures */
if (getenv(DB_ENVIRONMENT)) {
if (access(getenv(DB_ENVIRONMENT), X_OK))
- return 0;
+ goto done;
}
else {
- strcpy(path + len, "/objects");
- if (access(path, X_OK))
- return 0;
+ strbuf_setlen(&path, len);
+ strbuf_addstr(&path, "/objects");
+ if (access(path.buf, X_OK))
+ goto done;
}
- strcpy(path + len, "/refs");
- if (access(path, X_OK))
- return 0;
-
- strcpy(path + len, "/HEAD");
- if (validate_headref(path))
- return 0;
+ strbuf_setlen(&path, len);
+ strbuf_addstr(&path, "/refs");
+ if (access(path.buf, X_OK))
+ goto done;
- return 1;
+ ret = 1;
+done:
+ strbuf_release(&path);
+ return ret;
}
int is_inside_git_dir(void)
void setup_work_tree(void)
{
- struct strbuf sb = STRBUF_INIT;
const char *work_tree, *git_dir;
static int initialized = 0;
if (initialized)
return;
+
+ if (work_tree_config_is_bogus)
+ die("unable to set up work tree using invalid config");
+
work_tree = get_git_work_tree();
git_dir = get_git_dir();
if (!is_absolute_path(git_dir))
if (getenv(GIT_WORK_TREE_ENVIRONMENT))
setenv(GIT_WORK_TREE_ENVIRONMENT, ".", 1);
- set_git_dir(relative_path(git_dir, work_tree, &sb));
+ set_git_dir(remove_leading_path(git_dir, work_tree));
initialized = 1;
+}
- strbuf_release(&sb);
+static int check_repo_format(const char *var, const char *value, void *cb)
+{
+ if (strcmp(var, "core.repositoryformatversion") == 0)
+ repository_format_version = git_config_int(var, value);
+ else if (strcmp(var, "core.sharedrepository") == 0)
+ shared_repository = git_config_perm(var, value);
+ return 0;
}
static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
{
- char repo_config[PATH_MAX+1];
+ struct strbuf sb = STRBUF_INIT;
+ const char *repo_config;
+ config_fn_t fn;
+ int ret = 0;
+
+ if (get_common_dir(&sb, gitdir))
+ fn = check_repo_format;
+ else
+ fn = check_repository_format_version;
+ strbuf_addstr(&sb, "/config");
+ repo_config = sb.buf;
/*
* git_config() can't be used here because it calls git_pathdup()
* Use a gentler version of git_config() to check if this repo
* is a good one.
*/
- snprintf(repo_config, PATH_MAX, "%s/config", gitdir);
- git_config_early(check_repository_format_version, NULL, repo_config);
+ git_config_early(fn, NULL, repo_config);
if (GIT_REPO_VERSION < repository_format_version) {
if (!nongit_ok)
die ("Expected git repo version <= %d, found %d",
GIT_REPO_VERSION, repository_format_version);
warning("Please upgrade Git");
*nongit_ok = -1;
- return -1;
+ ret = -1;
}
- return 0;
+ strbuf_release(&sb);
+ return ret;
+}
+
+static void update_linked_gitdir(const char *gitfile, const char *gitdir)
+{
+ struct strbuf path = STRBUF_INIT;
+ struct stat st;
+
+ strbuf_addf(&path, "%s/gitdir", gitdir);
+ if (stat(path.buf, &st) || st.st_mtime + 24 * 3600 < time(NULL))
+ write_file(path.buf, "%s", gitfile);
+ strbuf_release(&path);
}
/*
* Try to read the location of the git directory from the .git file,
* return path to git directory if found.
+ *
+ * On failure, if return_error_code is not NULL, return_error_code
+ * will be set to an error code and NULL will be returned. If
+ * return_error_code is NULL the function will die instead (for most
+ * cases).
*/
-const char *read_gitfile(const char *path)
+const char *read_gitfile_gently(const char *path, int *return_error_code)
{
- char *buf;
- char *dir;
+ const int max_file_size = 1 << 20; /* 1MB */
+ int error_code = 0;
+ char *buf = NULL;
+ char *dir = NULL;
const char *slash;
struct stat st;
int fd;
ssize_t len;
- if (stat(path, &st))
- return NULL;
- if (!S_ISREG(st.st_mode))
- return NULL;
+ if (stat(path, &st)) {
+ error_code = READ_GITFILE_ERR_STAT_FAILED;
+ goto cleanup_return;
+ }
+ if (!S_ISREG(st.st_mode)) {
+ error_code = READ_GITFILE_ERR_NOT_A_FILE;
+ goto cleanup_return;
+ }
+ if (st.st_size > max_file_size) {
+ error_code = READ_GITFILE_ERR_TOO_LARGE;
+ goto cleanup_return;
+ }
fd = open(path, O_RDONLY);
- if (fd < 0)
- die_errno("Error opening '%s'", path);
+ if (fd < 0) {
+ error_code = READ_GITFILE_ERR_OPEN_FAILED;
+ goto cleanup_return;
+ }
buf = xmalloc(st.st_size + 1);
len = read_in_full(fd, buf, st.st_size);
close(fd);
- if (len != st.st_size)
- die("Error reading %s", path);
+ if (len != st.st_size) {
+ error_code = READ_GITFILE_ERR_READ_FAILED;
+ goto cleanup_return;
+ }
buf[len] = '\0';
- if (prefixcmp(buf, "gitdir: "))
- die("Invalid gitfile format: %s", path);
+ if (!starts_with(buf, "gitdir: ")) {
+ error_code = READ_GITFILE_ERR_INVALID_FORMAT;
+ goto cleanup_return;
+ }
while (buf[len - 1] == '\n' || buf[len - 1] == '\r')
len--;
- if (len < 9)
- die("No path in gitfile: %s", path);
+ if (len < 9) {
+ error_code = READ_GITFILE_ERR_NO_PATH;
+ goto cleanup_return;
+ }
buf[len] = '\0';
dir = buf + 8;
free(buf);
buf = dir;
}
-
- if (!is_git_directory(dir))
- die("Not a git repository: %s", dir);
+ if (!is_git_directory(dir)) {
+ error_code = READ_GITFILE_ERR_NOT_A_REPO;
+ goto cleanup_return;
+ }
+ update_linked_gitdir(path, dir);
path = real_path(dir);
+cleanup_return:
+ if (return_error_code)
+ *return_error_code = error_code;
+ else if (error_code) {
+ switch (error_code) {
+ case READ_GITFILE_ERR_STAT_FAILED:
+ case READ_GITFILE_ERR_NOT_A_FILE:
+ /* non-fatal; follow return path */
+ break;
+ case READ_GITFILE_ERR_OPEN_FAILED:
+ die_errno("Error opening '%s'", path);
+ case READ_GITFILE_ERR_TOO_LARGE:
+ die("Too large to be a .git file: '%s'", path);
+ case READ_GITFILE_ERR_READ_FAILED:
+ die("Error reading %s", path);
+ case READ_GITFILE_ERR_INVALID_FORMAT:
+ die("Invalid gitfile format: %s", path);
+ case READ_GITFILE_ERR_NO_PATH:
+ die("No path in gitfile: %s", path);
+ case READ_GITFILE_ERR_NOT_A_REPO:
+ die("Not a git repository: %s", dir);
+ default:
+ assert(0);
+ }
+ }
+
free(buf);
- return path;
+ return error_code ? NULL : path;
}
static const char *setup_explicit_git_dir(const char *gitdirenv,
- char *cwd, int len,
+ struct strbuf *cwd,
int *nongit_ok)
{
const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
if (work_tree_env)
set_git_work_tree(work_tree_env);
else if (is_bare_repository_cfg > 0) {
- if (git_work_tree_cfg) /* #22.2, #30 */
- die("core.bare and core.worktree do not make sense");
+ if (git_work_tree_cfg) {
+ /* #22.2, #30 */
+ warning("core.bare and core.worktree do not make sense");
+ work_tree_config_is_bogus = 1;
+ }
/* #18, #26 */
set_git_dir(gitdirenv);
if (is_absolute_path(git_work_tree_cfg))
set_git_work_tree(git_work_tree_cfg);
else {
- char core_worktree[PATH_MAX];
+ char *core_worktree;
if (chdir(gitdirenv))
die_errno("Could not chdir to '%s'", gitdirenv);
if (chdir(git_work_tree_cfg))
die_errno("Could not chdir to '%s'", git_work_tree_cfg);
- if (!getcwd(core_worktree, PATH_MAX))
- die_errno("Could not get directory '%s'", git_work_tree_cfg);
- if (chdir(cwd))
+ core_worktree = xgetcwd();
+ if (chdir(cwd->buf))
die_errno("Could not come back to cwd");
set_git_work_tree(core_worktree);
+ free(core_worktree);
}
}
else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, 1)) {
worktree = get_git_work_tree();
/* both get_git_work_tree() and cwd are already normalized */
- if (!strcmp(cwd, worktree)) { /* cwd == worktree */
+ if (!strcmp(cwd->buf, worktree)) { /* cwd == worktree */
set_git_dir(gitdirenv);
free(gitfile);
return NULL;
}
- offset = dir_inside_of(cwd, worktree);
+ offset = dir_inside_of(cwd->buf, worktree);
if (offset >= 0) { /* cwd inside worktree? */
set_git_dir(real_path(gitdirenv));
if (chdir(worktree))
die_errno("Could not chdir to '%s'", worktree);
- cwd[len++] = '/';
- cwd[len] = '\0';
+ strbuf_addch(cwd, '/');
free(gitfile);
- return cwd + offset;
+ return cwd->buf + offset;
}
/* cwd outside worktree */
}
static const char *setup_discovered_git_dir(const char *gitdir,
- char *cwd, int offset, int len,
+ struct strbuf *cwd, int offset,
int *nongit_ok)
{
if (check_repository_format_gently(gitdir, nongit_ok))
/* --work-tree is set without --git-dir; use discovered one */
if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
- if (offset != len && !is_absolute_path(gitdir))
+ if (offset != cwd->len && !is_absolute_path(gitdir))
gitdir = xstrdup(real_path(gitdir));
- if (chdir(cwd))
+ if (chdir(cwd->buf))
die_errno("Could not come back to cwd");
- return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
+ return setup_explicit_git_dir(gitdir, cwd, nongit_ok);
}
/* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
if (is_bare_repository_cfg > 0) {
- set_git_dir(offset == len ? gitdir : real_path(gitdir));
- if (chdir(cwd))
+ set_git_dir(offset == cwd->len ? gitdir : real_path(gitdir));
+ if (chdir(cwd->buf))
die_errno("Could not come back to cwd");
return NULL;
}
set_git_dir(gitdir);
inside_git_dir = 0;
inside_work_tree = 1;
- if (offset == len)
+ if (offset == cwd->len)
return NULL;
/* Make "offset" point to past the '/', and add a '/' at the end */
offset++;
- cwd[len++] = '/';
- cwd[len] = 0;
- return cwd + offset;
+ strbuf_addch(cwd, '/');
+ return cwd->buf + offset;
}
/* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
-static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongit_ok)
+static const char *setup_bare_git_dir(struct strbuf *cwd, int offset,
+ int *nongit_ok)
{
int root_len;
if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
const char *gitdir;
- gitdir = offset == len ? "." : xmemdupz(cwd, offset);
- if (chdir(cwd))
+ gitdir = offset == cwd->len ? "." : xmemdupz(cwd->buf, offset);
+ if (chdir(cwd->buf))
die_errno("Could not come back to cwd");
- return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
+ return setup_explicit_git_dir(gitdir, cwd, nongit_ok);
}
inside_git_dir = 1;
inside_work_tree = 0;
- if (offset != len) {
- if (chdir(cwd))
+ if (offset != cwd->len) {
+ if (chdir(cwd->buf))
die_errno("Cannot come back to cwd");
- root_len = offset_1st_component(cwd);
- cwd[offset > root_len ? offset : root_len] = '\0';
- set_git_dir(cwd);
+ root_len = offset_1st_component(cwd->buf);
+ strbuf_setlen(cwd, offset > root_len ? offset : root_len);
+ set_git_dir(cwd->buf);
}
else
set_git_dir(".");
{
const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
- static char cwd[PATH_MAX+1];
+ static struct strbuf cwd = STRBUF_INIT;
const char *gitdirenv, *ret;
char *gitfile;
- int len, offset, offset_parent, ceil_offset = -1;
+ int offset, offset_parent, ceil_offset = -1;
dev_t current_device = 0;
int one_filesystem = 1;
+ /*
+ * We may have read an incomplete configuration before
+ * setting-up the git directory. If so, clear the cache so
+ * that the next queries to the configuration reload complete
+ * configuration (including the per-repo config file that we
+ * ignored previously).
+ */
+ git_config_clear();
+
/*
* Let's assume that we are in a git repository.
* If it turns out later that we are somewhere else, the value will be
if (nongit_ok)
*nongit_ok = 0;
- if (!getcwd(cwd, sizeof(cwd)-1))
+ if (strbuf_getcwd(&cwd))
die_errno("Unable to read current working directory");
- offset = len = strlen(cwd);
+ offset = cwd.len;
/*
* If GIT_DIR is set explicitly, we're not going
*/
gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
if (gitdirenv)
- return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok);
+ return setup_explicit_git_dir(gitdirenv, &cwd, nongit_ok);
if (env_ceiling_dirs) {
int empty_entry_found = 0;
string_list_split(&ceiling_dirs, env_ceiling_dirs, PATH_SEP, -1);
filter_string_list(&ceiling_dirs, 0,
canonicalize_ceiling_entry, &empty_entry_found);
- ceil_offset = longest_ancestor_length(cwd, &ceiling_dirs);
+ ceil_offset = longest_ancestor_length(cwd.buf, &ceiling_dirs);
string_list_clear(&ceiling_dirs, 0);
}
- if (ceil_offset < 0 && has_dos_drive_prefix(cwd))
+ if (ceil_offset < 0 && has_dos_drive_prefix(cwd.buf))
ceil_offset = 1;
/*
if (gitdirenv) {
ret = setup_discovered_git_dir(gitdirenv,
- cwd, offset, len,
+ &cwd, offset,
nongit_ok);
free(gitfile);
return ret;
free(gitfile);
if (is_git_directory("."))
- return setup_bare_git_dir(cwd, offset, len, nongit_ok);
+ return setup_bare_git_dir(&cwd, offset, nongit_ok);
offset_parent = offset;
- while (--offset_parent > ceil_offset && cwd[offset_parent] != '/');
+ while (--offset_parent > ceil_offset && cwd.buf[offset_parent] != '/');
if (offset_parent <= ceil_offset)
- return setup_nongit(cwd, nongit_ok);
+ return setup_nongit(cwd.buf, nongit_ok);
if (one_filesystem) {
- dev_t parent_device = get_device_or_die("..", cwd, offset);
+ dev_t parent_device = get_device_or_die("..", cwd.buf,
+ offset);
if (parent_device != current_device) {
if (nongit_ok) {
- if (chdir(cwd))
+ if (chdir(cwd.buf))
die_errno("Cannot come back to cwd");
*nongit_ok = 1;
return NULL;
}
- cwd[offset] = '\0';
+ strbuf_setlen(&cwd, offset);
die("Not a git repository (or any parent up to mount point %s)\n"
- "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd);
+ "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).",
+ cwd.buf);
}
}
if (chdir("..")) {
- cwd[offset] = '\0';
- die_errno("Cannot change to '%s/..'", cwd);
+ strbuf_setlen(&cwd, offset);
+ die_errno("Cannot change to '%s/..'", cwd.buf);
}
offset = offset_parent;
}
int check_repository_format_version(const char *var, const char *value, void *cb)
{
- if (strcmp(var, "core.repositoryformatversion") == 0)
- repository_format_version = git_config_int(var, value);
- else if (strcmp(var, "core.sharedrepository") == 0)
- shared_repository = git_config_perm(var, value);
- else if (strcmp(var, "core.bare") == 0) {
+ int ret = check_repo_format(var, value, cb);
+ if (ret)
+ return ret;
+ if (strcmp(var, "core.bare") == 0) {
is_bare_repository_cfg = git_config_bool(var, value);
if (is_bare_repository_cfg == 1)
inside_work_tree = -1;
if (fd > 2)
close(fd);
}
+
+int daemonize(void)
+{
+#ifdef NO_POSIX_GOODIES
+ errno = ENOSYS;
+ return -1;
+#else
+ switch (fork()) {
+ case 0:
+ break;
+ case -1:
+ die_errno("fork failed");
+ default:
+ exit(0);
+ }
+ if (setsid() == -1)
+ die_errno("setsid failed");
+ close(0);
+ close(1);
+ close(2);
+ sanitize_stdfds();
+ return 0;
+#endif
+}