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![Junio C Hamano](/assets/img/avatar_default.png)
Remove unused header "#include". * en/header-cleanup: treewide: remove unnecessary includes in source files treewide: add direct includes currently only pulled in transitively trace2/tr2_tls.h: remove unnecessary include submodule-config.h: remove unnecessary include pkt-line.h: remove unnecessary include line-log.h: remove unnecessary include http.h: remove unnecessary include fsmonitor--daemon.h: remove unnecessary includes blame.h: remove unnecessary includes archive.h: remove unnecessary include treewide: remove unnecessary includes in source files treewide: remove unnecessary includes from header files
2208 lines
61 KiB
C
2208 lines
61 KiB
C
#include "git-compat-util.h"
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#include "abspath.h"
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#include "copy.h"
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#include "environment.h"
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#include "exec-cmd.h"
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#include "gettext.h"
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#include "object-name.h"
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#include "refs.h"
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#include "repository.h"
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#include "config.h"
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#include "dir.h"
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#include "setup.h"
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#include "string-list.h"
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#include "chdir-notify.h"
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#include "path.h"
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#include "quote.h"
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#include "trace2.h"
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#include "worktree.h"
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static int inside_git_dir = -1;
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static int inside_work_tree = -1;
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static int work_tree_config_is_bogus;
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enum allowed_bare_repo {
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ALLOWED_BARE_REPO_EXPLICIT = 0,
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ALLOWED_BARE_REPO_ALL,
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};
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static struct startup_info the_startup_info;
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struct startup_info *startup_info = &the_startup_info;
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const char *tmp_original_cwd;
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/*
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* The input parameter must contain an absolute path, and it must already be
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* normalized.
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*
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* Find the part of an absolute path that lies inside the work tree by
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* dereferencing symlinks outside the work tree, for example:
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* /dir1/repo/dir2/file (work tree is /dir1/repo) -> dir2/file
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* /dir/file (work tree is /) -> dir/file
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* /dir/symlink1/symlink2 (symlink1 points to work tree) -> symlink2
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* /dir/repolink/file (repolink points to /dir/repo) -> file
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* /dir/repo (exactly equal to work tree) -> (empty string)
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*/
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static int abspath_part_inside_repo(char *path)
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{
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size_t len;
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size_t wtlen;
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char *path0;
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int off;
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const char *work_tree = get_git_work_tree();
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struct strbuf realpath = STRBUF_INIT;
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if (!work_tree)
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return -1;
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wtlen = strlen(work_tree);
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len = strlen(path);
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off = offset_1st_component(path);
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/* check if work tree is already the prefix */
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if (wtlen <= len && !fspathncmp(path, work_tree, wtlen)) {
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if (path[wtlen] == '/') {
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memmove(path, path + wtlen + 1, len - wtlen);
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return 0;
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} else if (path[wtlen - 1] == '/' || path[wtlen] == '\0') {
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/* work tree is the root, or the whole path */
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memmove(path, path + wtlen, len - wtlen + 1);
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return 0;
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}
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/* work tree might match beginning of a symlink to work tree */
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off = wtlen;
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}
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path0 = path;
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path += off;
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/* check each '/'-terminated level */
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while (*path) {
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path++;
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if (*path == '/') {
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*path = '\0';
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strbuf_realpath(&realpath, path0, 1);
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if (fspathcmp(realpath.buf, work_tree) == 0) {
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memmove(path0, path + 1, len - (path - path0));
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strbuf_release(&realpath);
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return 0;
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}
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*path = '/';
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}
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}
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/* check whole path */
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strbuf_realpath(&realpath, path0, 1);
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if (fspathcmp(realpath.buf, work_tree) == 0) {
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*path0 = '\0';
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strbuf_release(&realpath);
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return 0;
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}
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strbuf_release(&realpath);
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return -1;
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}
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/*
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* Normalize "path", prepending the "prefix" for relative paths. If
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* remaining_prefix is not NULL, return the actual prefix still
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* remains in the path. For example, prefix = sub1/sub2/ and path is
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*
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* foo -> sub1/sub2/foo (full prefix)
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* ../foo -> sub1/foo (remaining prefix is sub1/)
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* ../../bar -> bar (no remaining prefix)
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* ../../sub1/sub2/foo -> sub1/sub2/foo (but no remaining prefix)
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* `pwd`/../bar -> sub1/bar (no remaining prefix)
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*/
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char *prefix_path_gently(const char *prefix, int len,
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int *remaining_prefix, const char *path)
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{
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const char *orig = path;
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char *sanitized;
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if (is_absolute_path(orig)) {
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sanitized = xmallocz(strlen(path));
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if (remaining_prefix)
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*remaining_prefix = 0;
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if (normalize_path_copy_len(sanitized, path, remaining_prefix)) {
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free(sanitized);
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return NULL;
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}
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if (abspath_part_inside_repo(sanitized)) {
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free(sanitized);
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return NULL;
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}
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} else {
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sanitized = xstrfmt("%.*s%s", len, len ? prefix : "", path);
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if (remaining_prefix)
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*remaining_prefix = len;
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if (normalize_path_copy_len(sanitized, sanitized, remaining_prefix)) {
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free(sanitized);
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return NULL;
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}
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}
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return sanitized;
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}
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char *prefix_path(const char *prefix, int len, const char *path)
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{
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char *r = prefix_path_gently(prefix, len, NULL, path);
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if (!r) {
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const char *hint_path = get_git_work_tree();
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if (!hint_path)
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hint_path = get_git_dir();
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die(_("'%s' is outside repository at '%s'"), path,
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absolute_path(hint_path));
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}
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return r;
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}
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int path_inside_repo(const char *prefix, const char *path)
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{
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int len = prefix ? strlen(prefix) : 0;
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char *r = prefix_path_gently(prefix, len, NULL, path);
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if (r) {
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free(r);
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return 1;
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}
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return 0;
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}
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int check_filename(const char *prefix, const char *arg)
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{
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char *to_free = NULL;
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struct stat st;
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if (skip_prefix(arg, ":/", &arg)) {
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if (!*arg) /* ":/" is root dir, always exists */
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return 1;
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prefix = NULL;
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} else if (skip_prefix(arg, ":!", &arg) ||
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skip_prefix(arg, ":^", &arg)) {
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if (!*arg) /* excluding everything is silly, but allowed */
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return 1;
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}
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if (prefix)
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arg = to_free = prefix_filename(prefix, arg);
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if (!lstat(arg, &st)) {
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free(to_free);
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return 1; /* file exists */
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}
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if (is_missing_file_error(errno)) {
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free(to_free);
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return 0; /* file does not exist */
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}
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die_errno(_("failed to stat '%s'"), arg);
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}
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static void NORETURN die_verify_filename(struct repository *r,
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const char *prefix,
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const char *arg,
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int diagnose_misspelt_rev)
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{
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if (!diagnose_misspelt_rev)
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die(_("%s: no such path in the working tree.\n"
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"Use 'git <command> -- <path>...' to specify paths that do not exist locally."),
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arg);
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/*
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* Saying "'(icase)foo' does not exist in the index" when the
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* user gave us ":(icase)foo" is just stupid. A magic pathspec
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* begins with a colon and is followed by a non-alnum; do not
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* let maybe_die_on_misspelt_object_name() even trigger.
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*/
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if (!(arg[0] == ':' && !isalnum(arg[1])))
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maybe_die_on_misspelt_object_name(r, arg, prefix);
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/* ... or fall back the most general message. */
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die(_("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
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"Use '--' to separate paths from revisions, like this:\n"
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"'git <command> [<revision>...] -- [<file>...]'"), arg);
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}
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/*
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* Check for arguments that don't resolve as actual files,
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* but which look sufficiently like pathspecs that we'll consider
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* them such for the purposes of rev/pathspec DWIM parsing.
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*/
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static int looks_like_pathspec(const char *arg)
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{
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const char *p;
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int escaped = 0;
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/*
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* Wildcard characters imply the user is looking to match pathspecs
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* that aren't in the filesystem. Note that this doesn't include
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* backslash even though it's a glob special; by itself it doesn't
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* cause any increase in the match. Likewise ignore backslash-escaped
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* wildcard characters.
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*/
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for (p = arg; *p; p++) {
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if (escaped) {
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escaped = 0;
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} else if (is_glob_special(*p)) {
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if (*p == '\\')
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escaped = 1;
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else
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return 1;
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}
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}
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/* long-form pathspec magic */
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if (starts_with(arg, ":("))
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return 1;
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return 0;
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}
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/*
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* Verify a filename that we got as an argument for a pathspec
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* entry. Note that a filename that begins with "-" never verifies
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* as true, because even if such a filename were to exist, we want
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* it to be preceded by the "--" marker (or we want the user to
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* use a format like "./-filename")
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*
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* The "diagnose_misspelt_rev" is used to provide a user-friendly
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* diagnosis when dying upon finding that "name" is not a pathname.
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* If set to 1, the diagnosis will try to diagnose "name" as an
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* invalid object name (e.g. HEAD:foo). If set to 0, the diagnosis
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* will only complain about an inexisting file.
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*
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* This function is typically called to check that a "file or rev"
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* argument is unambiguous. In this case, the caller will want
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* diagnose_misspelt_rev == 1 when verifying the first non-rev
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* argument (which could have been a revision), and
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* diagnose_misspelt_rev == 0 for the next ones (because we already
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* saw a filename, there's not ambiguity anymore).
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*/
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void verify_filename(const char *prefix,
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const char *arg,
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int diagnose_misspelt_rev)
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{
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if (*arg == '-')
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die(_("option '%s' must come before non-option arguments"), arg);
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if (looks_like_pathspec(arg) || check_filename(prefix, arg))
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return;
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die_verify_filename(the_repository, prefix, arg, diagnose_misspelt_rev);
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}
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/*
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* Opposite of the above: the command line did not have -- marker
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* and we parsed the arg as a refname. It should not be interpretable
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* as a filename.
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*/
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void verify_non_filename(const char *prefix, const char *arg)
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{
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if (!is_inside_work_tree() || is_inside_git_dir())
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return;
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if (*arg == '-')
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return; /* flag */
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if (!check_filename(prefix, arg))
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return;
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die(_("ambiguous argument '%s': both revision and filename\n"
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"Use '--' to separate paths from revisions, like this:\n"
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"'git <command> [<revision>...] -- [<file>...]'"), arg);
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}
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int get_common_dir(struct strbuf *sb, const char *gitdir)
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{
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const char *git_env_common_dir = getenv(GIT_COMMON_DIR_ENVIRONMENT);
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if (git_env_common_dir) {
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strbuf_addstr(sb, git_env_common_dir);
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return 1;
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} else {
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return get_common_dir_noenv(sb, gitdir);
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}
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}
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int get_common_dir_noenv(struct strbuf *sb, const char *gitdir)
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{
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struct strbuf data = STRBUF_INIT;
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struct strbuf path = STRBUF_INIT;
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int ret = 0;
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strbuf_addf(&path, "%s/commondir", gitdir);
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if (file_exists(path.buf)) {
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if (strbuf_read_file(&data, path.buf, 0) <= 0)
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die_errno(_("failed to read %s"), path.buf);
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while (data.len && (data.buf[data.len - 1] == '\n' ||
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data.buf[data.len - 1] == '\r'))
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data.len--;
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data.buf[data.len] = '\0';
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strbuf_reset(&path);
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if (!is_absolute_path(data.buf))
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strbuf_addf(&path, "%s/", gitdir);
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strbuf_addbuf(&path, &data);
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strbuf_add_real_path(sb, path.buf);
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ret = 1;
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} else {
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strbuf_addstr(sb, gitdir);
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}
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strbuf_release(&data);
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strbuf_release(&path);
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return ret;
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}
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/*
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* Test if it looks like we're at a git directory.
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* We want to see:
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*
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* - either an objects/ directory _or_ the proper
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* GIT_OBJECT_DIRECTORY environment variable
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* - a refs/ directory
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* - either a HEAD symlink or a HEAD file that is formatted as
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* a proper "ref:", or a regular file HEAD that has a properly
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* formatted sha1 object name.
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*/
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int is_git_directory(const char *suspect)
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{
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struct strbuf path = STRBUF_INIT;
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int ret = 0;
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size_t len;
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/* Check worktree-related signatures */
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strbuf_addstr(&path, suspect);
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strbuf_complete(&path, '/');
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strbuf_addstr(&path, "HEAD");
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if (validate_headref(path.buf))
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goto done;
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strbuf_reset(&path);
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get_common_dir(&path, suspect);
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len = path.len;
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/* Check non-worktree-related signatures */
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if (getenv(DB_ENVIRONMENT)) {
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if (access(getenv(DB_ENVIRONMENT), X_OK))
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goto done;
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}
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else {
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strbuf_setlen(&path, len);
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strbuf_addstr(&path, "/objects");
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if (access(path.buf, X_OK))
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goto done;
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}
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strbuf_setlen(&path, len);
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strbuf_addstr(&path, "/refs");
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if (access(path.buf, X_OK))
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goto done;
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ret = 1;
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done:
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strbuf_release(&path);
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return ret;
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}
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int is_nonbare_repository_dir(struct strbuf *path)
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{
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int ret = 0;
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int gitfile_error;
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size_t orig_path_len = path->len;
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assert(orig_path_len != 0);
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strbuf_complete(path, '/');
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strbuf_addstr(path, ".git");
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if (read_gitfile_gently(path->buf, &gitfile_error) || is_git_directory(path->buf))
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ret = 1;
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if (gitfile_error == READ_GITFILE_ERR_OPEN_FAILED ||
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gitfile_error == READ_GITFILE_ERR_READ_FAILED)
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ret = 1;
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strbuf_setlen(path, orig_path_len);
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return ret;
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}
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int is_inside_git_dir(void)
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{
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if (inside_git_dir < 0)
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inside_git_dir = is_inside_dir(get_git_dir());
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return inside_git_dir;
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}
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int is_inside_work_tree(void)
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{
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if (inside_work_tree < 0)
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inside_work_tree = is_inside_dir(get_git_work_tree());
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return inside_work_tree;
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}
|
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|
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void setup_work_tree(void)
|
|
{
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const char *work_tree;
|
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static int initialized = 0;
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|
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if (initialized)
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return;
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|
|
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if (work_tree_config_is_bogus)
|
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die(_("unable to set up work tree using invalid config"));
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|
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work_tree = get_git_work_tree();
|
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if (!work_tree || chdir_notify(work_tree))
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die(_("this operation must be run in a work tree"));
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|
|
|
/*
|
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* Make sure subsequent git processes find correct worktree
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* if $GIT_WORK_TREE is set relative
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*/
|
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if (getenv(GIT_WORK_TREE_ENVIRONMENT))
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setenv(GIT_WORK_TREE_ENVIRONMENT, ".", 1);
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|
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initialized = 1;
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}
|
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|
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static void setup_original_cwd(void)
|
|
{
|
|
struct strbuf tmp = STRBUF_INIT;
|
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const char *worktree = NULL;
|
|
int offset = -1;
|
|
|
|
if (!tmp_original_cwd)
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return;
|
|
|
|
/*
|
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* startup_info->original_cwd points to the current working
|
|
* directory we inherited from our parent process, which is a
|
|
* directory we want to avoid removing.
|
|
*
|
|
* For convience, we would like to have the path relative to the
|
|
* worktree instead of an absolute path.
|
|
*
|
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* Yes, startup_info->original_cwd is usually the same as 'prefix',
|
|
* but differs in two ways:
|
|
* - prefix has a trailing '/'
|
|
* - if the user passes '-C' to git, that modifies the prefix but
|
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* not startup_info->original_cwd.
|
|
*/
|
|
|
|
/* Normalize the directory */
|
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if (!strbuf_realpath(&tmp, tmp_original_cwd, 0)) {
|
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trace2_data_string("setup", the_repository,
|
|
"realpath-path", tmp_original_cwd);
|
|
trace2_data_string("setup", the_repository,
|
|
"realpath-failure", strerror(errno));
|
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free((char*)tmp_original_cwd);
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tmp_original_cwd = NULL;
|
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return;
|
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}
|
|
|
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free((char*)tmp_original_cwd);
|
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tmp_original_cwd = NULL;
|
|
startup_info->original_cwd = strbuf_detach(&tmp, NULL);
|
|
|
|
/*
|
|
* Get our worktree; we only protect the current working directory
|
|
* if it's in the worktree.
|
|
*/
|
|
worktree = get_git_work_tree();
|
|
if (!worktree)
|
|
goto no_prevention_needed;
|
|
|
|
offset = dir_inside_of(startup_info->original_cwd, worktree);
|
|
if (offset >= 0) {
|
|
/*
|
|
* If startup_info->original_cwd == worktree, that is already
|
|
* protected and we don't need original_cwd as a secondary
|
|
* protection measure.
|
|
*/
|
|
if (!*(startup_info->original_cwd + offset))
|
|
goto no_prevention_needed;
|
|
|
|
/*
|
|
* original_cwd was inside worktree; precompose it just as
|
|
* we do prefix so that built up paths will match
|
|
*/
|
|
startup_info->original_cwd = \
|
|
precompose_string_if_needed(startup_info->original_cwd
|
|
+ offset);
|
|
return;
|
|
}
|
|
|
|
no_prevention_needed:
|
|
free((char*)startup_info->original_cwd);
|
|
startup_info->original_cwd = NULL;
|
|
}
|
|
|
|
static int read_worktree_config(const char *var, const char *value,
|
|
const struct config_context *ctx UNUSED,
|
|
void *vdata)
|
|
{
|
|
struct repository_format *data = vdata;
|
|
|
|
if (strcmp(var, "core.bare") == 0) {
|
|
data->is_bare = git_config_bool(var, value);
|
|
} else if (strcmp(var, "core.worktree") == 0) {
|
|
if (!value)
|
|
return config_error_nonbool(var);
|
|
free(data->work_tree);
|
|
data->work_tree = xstrdup(value);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
enum extension_result {
|
|
EXTENSION_ERROR = -1, /* compatible with error(), etc */
|
|
EXTENSION_UNKNOWN = 0,
|
|
EXTENSION_OK = 1
|
|
};
|
|
|
|
/*
|
|
* Do not add new extensions to this function. It handles extensions which are
|
|
* respected even in v0-format repositories for historical compatibility.
|
|
*/
|
|
static enum extension_result handle_extension_v0(const char *var,
|
|
const char *value,
|
|
const char *ext,
|
|
struct repository_format *data)
|
|
{
|
|
if (!strcmp(ext, "noop")) {
|
|
return EXTENSION_OK;
|
|
} else if (!strcmp(ext, "preciousobjects")) {
|
|
data->precious_objects = git_config_bool(var, value);
|
|
return EXTENSION_OK;
|
|
} else if (!strcmp(ext, "partialclone")) {
|
|
if (!value)
|
|
return config_error_nonbool(var);
|
|
data->partial_clone = xstrdup(value);
|
|
return EXTENSION_OK;
|
|
} else if (!strcmp(ext, "worktreeconfig")) {
|
|
data->worktree_config = git_config_bool(var, value);
|
|
return EXTENSION_OK;
|
|
}
|
|
|
|
return EXTENSION_UNKNOWN;
|
|
}
|
|
|
|
/*
|
|
* Record any new extensions in this function.
|
|
*/
|
|
static enum extension_result handle_extension(const char *var,
|
|
const char *value,
|
|
const char *ext,
|
|
struct repository_format *data)
|
|
{
|
|
if (!strcmp(ext, "noop-v1")) {
|
|
return EXTENSION_OK;
|
|
} else if (!strcmp(ext, "objectformat")) {
|
|
int format;
|
|
|
|
if (!value)
|
|
return config_error_nonbool(var);
|
|
format = hash_algo_by_name(value);
|
|
if (format == GIT_HASH_UNKNOWN)
|
|
return error(_("invalid value for '%s': '%s'"),
|
|
"extensions.objectformat", value);
|
|
data->hash_algo = format;
|
|
return EXTENSION_OK;
|
|
}
|
|
return EXTENSION_UNKNOWN;
|
|
}
|
|
|
|
static int check_repo_format(const char *var, const char *value,
|
|
const struct config_context *ctx, void *vdata)
|
|
{
|
|
struct repository_format *data = vdata;
|
|
const char *ext;
|
|
|
|
if (strcmp(var, "core.repositoryformatversion") == 0)
|
|
data->version = git_config_int(var, value, ctx->kvi);
|
|
else if (skip_prefix(var, "extensions.", &ext)) {
|
|
switch (handle_extension_v0(var, value, ext, data)) {
|
|
case EXTENSION_ERROR:
|
|
return -1;
|
|
case EXTENSION_OK:
|
|
return 0;
|
|
case EXTENSION_UNKNOWN:
|
|
break;
|
|
}
|
|
|
|
switch (handle_extension(var, value, ext, data)) {
|
|
case EXTENSION_ERROR:
|
|
return -1;
|
|
case EXTENSION_OK:
|
|
string_list_append(&data->v1_only_extensions, ext);
|
|
return 0;
|
|
case EXTENSION_UNKNOWN:
|
|
string_list_append(&data->unknown_extensions, ext);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return read_worktree_config(var, value, ctx, vdata);
|
|
}
|
|
|
|
static int check_repository_format_gently(const char *gitdir, struct repository_format *candidate, int *nongit_ok)
|
|
{
|
|
struct strbuf sb = STRBUF_INIT;
|
|
struct strbuf err = STRBUF_INIT;
|
|
int has_common;
|
|
|
|
has_common = get_common_dir(&sb, gitdir);
|
|
strbuf_addstr(&sb, "/config");
|
|
read_repository_format(candidate, sb.buf);
|
|
strbuf_release(&sb);
|
|
|
|
/*
|
|
* For historical use of check_repository_format() in git-init,
|
|
* we treat a missing config as a silent "ok", even when nongit_ok
|
|
* is unset.
|
|
*/
|
|
if (candidate->version < 0)
|
|
return 0;
|
|
|
|
if (verify_repository_format(candidate, &err) < 0) {
|
|
if (nongit_ok) {
|
|
warning("%s", err.buf);
|
|
strbuf_release(&err);
|
|
*nongit_ok = -1;
|
|
return -1;
|
|
}
|
|
die("%s", err.buf);
|
|
}
|
|
|
|
repository_format_precious_objects = candidate->precious_objects;
|
|
string_list_clear(&candidate->unknown_extensions, 0);
|
|
string_list_clear(&candidate->v1_only_extensions, 0);
|
|
|
|
if (candidate->worktree_config) {
|
|
/*
|
|
* pick up core.bare and core.worktree from per-worktree
|
|
* config if present
|
|
*/
|
|
strbuf_addf(&sb, "%s/config.worktree", gitdir);
|
|
git_config_from_file(read_worktree_config, sb.buf, candidate);
|
|
strbuf_release(&sb);
|
|
has_common = 0;
|
|
}
|
|
|
|
if (!has_common) {
|
|
if (candidate->is_bare != -1) {
|
|
is_bare_repository_cfg = candidate->is_bare;
|
|
if (is_bare_repository_cfg == 1)
|
|
inside_work_tree = -1;
|
|
}
|
|
if (candidate->work_tree) {
|
|
free(git_work_tree_cfg);
|
|
git_work_tree_cfg = xstrdup(candidate->work_tree);
|
|
inside_work_tree = -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int upgrade_repository_format(int target_version)
|
|
{
|
|
struct strbuf sb = STRBUF_INIT;
|
|
struct strbuf err = STRBUF_INIT;
|
|
struct strbuf repo_version = STRBUF_INIT;
|
|
struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT;
|
|
int ret;
|
|
|
|
strbuf_git_common_path(&sb, the_repository, "config");
|
|
read_repository_format(&repo_fmt, sb.buf);
|
|
strbuf_release(&sb);
|
|
|
|
if (repo_fmt.version >= target_version) {
|
|
ret = 0;
|
|
goto out;
|
|
}
|
|
|
|
if (verify_repository_format(&repo_fmt, &err) < 0) {
|
|
ret = error("cannot upgrade repository format from %d to %d: %s",
|
|
repo_fmt.version, target_version, err.buf);
|
|
goto out;
|
|
}
|
|
if (!repo_fmt.version && repo_fmt.unknown_extensions.nr) {
|
|
ret = error("cannot upgrade repository format: "
|
|
"unknown extension %s",
|
|
repo_fmt.unknown_extensions.items[0].string);
|
|
goto out;
|
|
}
|
|
|
|
strbuf_addf(&repo_version, "%d", target_version);
|
|
git_config_set("core.repositoryformatversion", repo_version.buf);
|
|
|
|
ret = 1;
|
|
|
|
out:
|
|
clear_repository_format(&repo_fmt);
|
|
strbuf_release(&repo_version);
|
|
strbuf_release(&err);
|
|
return ret;
|
|
}
|
|
|
|
static void init_repository_format(struct repository_format *format)
|
|
{
|
|
const struct repository_format fresh = REPOSITORY_FORMAT_INIT;
|
|
|
|
memcpy(format, &fresh, sizeof(fresh));
|
|
}
|
|
|
|
int read_repository_format(struct repository_format *format, const char *path)
|
|
{
|
|
clear_repository_format(format);
|
|
git_config_from_file(check_repo_format, path, format);
|
|
if (format->version == -1)
|
|
clear_repository_format(format);
|
|
return format->version;
|
|
}
|
|
|
|
void clear_repository_format(struct repository_format *format)
|
|
{
|
|
string_list_clear(&format->unknown_extensions, 0);
|
|
string_list_clear(&format->v1_only_extensions, 0);
|
|
free(format->work_tree);
|
|
free(format->partial_clone);
|
|
init_repository_format(format);
|
|
}
|
|
|
|
int verify_repository_format(const struct repository_format *format,
|
|
struct strbuf *err)
|
|
{
|
|
if (GIT_REPO_VERSION_READ < format->version) {
|
|
strbuf_addf(err, _("Expected git repo version <= %d, found %d"),
|
|
GIT_REPO_VERSION_READ, format->version);
|
|
return -1;
|
|
}
|
|
|
|
if (format->version >= 1 && format->unknown_extensions.nr) {
|
|
int i;
|
|
|
|
strbuf_addstr(err, Q_("unknown repository extension found:",
|
|
"unknown repository extensions found:",
|
|
format->unknown_extensions.nr));
|
|
|
|
for (i = 0; i < format->unknown_extensions.nr; i++)
|
|
strbuf_addf(err, "\n\t%s",
|
|
format->unknown_extensions.items[i].string);
|
|
return -1;
|
|
}
|
|
|
|
if (format->version == 0 && format->v1_only_extensions.nr) {
|
|
int i;
|
|
|
|
strbuf_addstr(err,
|
|
Q_("repo version is 0, but v1-only extension found:",
|
|
"repo version is 0, but v1-only extensions found:",
|
|
format->v1_only_extensions.nr));
|
|
|
|
for (i = 0; i < format->v1_only_extensions.nr; i++)
|
|
strbuf_addf(err, "\n\t%s",
|
|
format->v1_only_extensions.items[i].string);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void read_gitfile_error_die(int error_code, const char *path, const char *dir)
|
|
{
|
|
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:
|
|
BUG("unknown error code");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Try to read the location of the git directory from the .git file,
|
|
* return path to git directory if found. The return value comes from
|
|
* a shared buffer.
|
|
*
|
|
* 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_gently(const char *path, int *return_error_code)
|
|
{
|
|
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;
|
|
static struct strbuf realpath = STRBUF_INIT;
|
|
|
|
if (stat(path, &st)) {
|
|
/* NEEDSWORK: discern between ENOENT vs other errors */
|
|
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) {
|
|
error_code = READ_GITFILE_ERR_OPEN_FAILED;
|
|
goto cleanup_return;
|
|
}
|
|
buf = xmallocz(st.st_size);
|
|
len = read_in_full(fd, buf, st.st_size);
|
|
close(fd);
|
|
if (len != st.st_size) {
|
|
error_code = READ_GITFILE_ERR_READ_FAILED;
|
|
goto cleanup_return;
|
|
}
|
|
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) {
|
|
error_code = READ_GITFILE_ERR_NO_PATH;
|
|
goto cleanup_return;
|
|
}
|
|
buf[len] = '\0';
|
|
dir = buf + 8;
|
|
|
|
if (!is_absolute_path(dir) && (slash = strrchr(path, '/'))) {
|
|
size_t pathlen = slash+1 - path;
|
|
dir = xstrfmt("%.*s%.*s", (int)pathlen, path,
|
|
(int)(len - 8), buf + 8);
|
|
free(buf);
|
|
buf = dir;
|
|
}
|
|
if (!is_git_directory(dir)) {
|
|
error_code = READ_GITFILE_ERR_NOT_A_REPO;
|
|
goto cleanup_return;
|
|
}
|
|
|
|
strbuf_realpath(&realpath, dir, 1);
|
|
path = realpath.buf;
|
|
|
|
cleanup_return:
|
|
if (return_error_code)
|
|
*return_error_code = error_code;
|
|
else if (error_code)
|
|
read_gitfile_error_die(error_code, path, dir);
|
|
|
|
free(buf);
|
|
return error_code ? NULL : path;
|
|
}
|
|
|
|
static const char *setup_explicit_git_dir(const char *gitdirenv,
|
|
struct strbuf *cwd,
|
|
struct repository_format *repo_fmt,
|
|
int *nongit_ok)
|
|
{
|
|
const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
|
|
const char *worktree;
|
|
char *gitfile;
|
|
int offset;
|
|
|
|
if (PATH_MAX - 40 < strlen(gitdirenv))
|
|
die(_("'$%s' too big"), GIT_DIR_ENVIRONMENT);
|
|
|
|
gitfile = (char*)read_gitfile(gitdirenv);
|
|
if (gitfile) {
|
|
gitfile = xstrdup(gitfile);
|
|
gitdirenv = gitfile;
|
|
}
|
|
|
|
if (!is_git_directory(gitdirenv)) {
|
|
if (nongit_ok) {
|
|
*nongit_ok = 1;
|
|
free(gitfile);
|
|
return NULL;
|
|
}
|
|
die(_("not a git repository: '%s'"), gitdirenv);
|
|
}
|
|
|
|
if (check_repository_format_gently(gitdirenv, repo_fmt, nongit_ok)) {
|
|
free(gitfile);
|
|
return NULL;
|
|
}
|
|
|
|
/* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
|
|
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 */
|
|
warning("core.bare and core.worktree do not make sense");
|
|
work_tree_config_is_bogus = 1;
|
|
}
|
|
|
|
/* #18, #26 */
|
|
set_git_dir(gitdirenv, 0);
|
|
free(gitfile);
|
|
return NULL;
|
|
}
|
|
else if (git_work_tree_cfg) { /* #6, #14 */
|
|
if (is_absolute_path(git_work_tree_cfg))
|
|
set_git_work_tree(git_work_tree_cfg);
|
|
else {
|
|
char *core_worktree;
|
|
if (chdir(gitdirenv))
|
|
die_errno(_("cannot chdir to '%s'"), gitdirenv);
|
|
if (chdir(git_work_tree_cfg))
|
|
die_errno(_("cannot chdir to '%s'"), git_work_tree_cfg);
|
|
core_worktree = xgetcwd();
|
|
if (chdir(cwd->buf))
|
|
die_errno(_("cannot come back to cwd"));
|
|
set_git_work_tree(core_worktree);
|
|
free(core_worktree);
|
|
}
|
|
}
|
|
else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, 1)) {
|
|
/* #16d */
|
|
set_git_dir(gitdirenv, 0);
|
|
free(gitfile);
|
|
return NULL;
|
|
}
|
|
else /* #2, #10 */
|
|
set_git_work_tree(".");
|
|
|
|
/* set_git_work_tree() must have been called by now */
|
|
worktree = get_git_work_tree();
|
|
|
|
/* both get_git_work_tree() and cwd are already normalized */
|
|
if (!strcmp(cwd->buf, worktree)) { /* cwd == worktree */
|
|
set_git_dir(gitdirenv, 0);
|
|
free(gitfile);
|
|
return NULL;
|
|
}
|
|
|
|
offset = dir_inside_of(cwd->buf, worktree);
|
|
if (offset >= 0) { /* cwd inside worktree? */
|
|
set_git_dir(gitdirenv, 1);
|
|
if (chdir(worktree))
|
|
die_errno(_("cannot chdir to '%s'"), worktree);
|
|
strbuf_addch(cwd, '/');
|
|
free(gitfile);
|
|
return cwd->buf + offset;
|
|
}
|
|
|
|
/* cwd outside worktree */
|
|
set_git_dir(gitdirenv, 0);
|
|
free(gitfile);
|
|
return NULL;
|
|
}
|
|
|
|
static const char *setup_discovered_git_dir(const char *gitdir,
|
|
struct strbuf *cwd, int offset,
|
|
struct repository_format *repo_fmt,
|
|
int *nongit_ok)
|
|
{
|
|
if (check_repository_format_gently(gitdir, repo_fmt, nongit_ok))
|
|
return NULL;
|
|
|
|
/* --work-tree is set without --git-dir; use discovered one */
|
|
if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
|
|
char *to_free = NULL;
|
|
const char *ret;
|
|
|
|
if (offset != cwd->len && !is_absolute_path(gitdir))
|
|
gitdir = to_free = real_pathdup(gitdir, 1);
|
|
if (chdir(cwd->buf))
|
|
die_errno(_("cannot come back to cwd"));
|
|
ret = setup_explicit_git_dir(gitdir, cwd, repo_fmt, nongit_ok);
|
|
free(to_free);
|
|
return ret;
|
|
}
|
|
|
|
/* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
|
|
if (is_bare_repository_cfg > 0) {
|
|
set_git_dir(gitdir, (offset != cwd->len));
|
|
if (chdir(cwd->buf))
|
|
die_errno(_("cannot come back to cwd"));
|
|
return NULL;
|
|
}
|
|
|
|
/* #0, #1, #5, #8, #9, #12, #13 */
|
|
set_git_work_tree(".");
|
|
if (strcmp(gitdir, DEFAULT_GIT_DIR_ENVIRONMENT))
|
|
set_git_dir(gitdir, 0);
|
|
inside_git_dir = 0;
|
|
inside_work_tree = 1;
|
|
if (offset >= cwd->len)
|
|
return NULL;
|
|
|
|
/* Make "offset" point past the '/' (already the case for root dirs) */
|
|
if (offset != offset_1st_component(cwd->buf))
|
|
offset++;
|
|
/* Add a '/' at the end */
|
|
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(struct strbuf *cwd, int offset,
|
|
struct repository_format *repo_fmt,
|
|
int *nongit_ok)
|
|
{
|
|
int root_len;
|
|
|
|
if (check_repository_format_gently(".", repo_fmt, nongit_ok))
|
|
return NULL;
|
|
|
|
setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1);
|
|
|
|
/* --work-tree is set without --git-dir; use discovered one */
|
|
if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
|
|
static const char *gitdir;
|
|
|
|
gitdir = offset == cwd->len ? "." : xmemdupz(cwd->buf, offset);
|
|
if (chdir(cwd->buf))
|
|
die_errno(_("cannot come back to cwd"));
|
|
return setup_explicit_git_dir(gitdir, cwd, repo_fmt, nongit_ok);
|
|
}
|
|
|
|
inside_git_dir = 1;
|
|
inside_work_tree = 0;
|
|
if (offset != cwd->len) {
|
|
if (chdir(cwd->buf))
|
|
die_errno(_("cannot come back to cwd"));
|
|
root_len = offset_1st_component(cwd->buf);
|
|
strbuf_setlen(cwd, offset > root_len ? offset : root_len);
|
|
set_git_dir(cwd->buf, 0);
|
|
}
|
|
else
|
|
set_git_dir(".", 0);
|
|
return NULL;
|
|
}
|
|
|
|
static dev_t get_device_or_die(const char *path, const char *prefix, int prefix_len)
|
|
{
|
|
struct stat buf;
|
|
if (stat(path, &buf)) {
|
|
die_errno(_("failed to stat '%*s%s%s'"),
|
|
prefix_len,
|
|
prefix ? prefix : "",
|
|
prefix ? "/" : "", path);
|
|
}
|
|
return buf.st_dev;
|
|
}
|
|
|
|
/*
|
|
* A "string_list_each_func_t" function that canonicalizes an entry
|
|
* from GIT_CEILING_DIRECTORIES using real_pathdup(), or
|
|
* discards it if unusable. The presence of an empty entry in
|
|
* GIT_CEILING_DIRECTORIES turns off canonicalization for all
|
|
* subsequent entries.
|
|
*/
|
|
static int canonicalize_ceiling_entry(struct string_list_item *item,
|
|
void *cb_data)
|
|
{
|
|
int *empty_entry_found = cb_data;
|
|
char *ceil = item->string;
|
|
|
|
if (!*ceil) {
|
|
*empty_entry_found = 1;
|
|
return 0;
|
|
} else if (!is_absolute_path(ceil)) {
|
|
return 0;
|
|
} else if (*empty_entry_found) {
|
|
/* Keep entry but do not canonicalize it */
|
|
return 1;
|
|
} else {
|
|
char *real_path = real_pathdup(ceil, 0);
|
|
if (!real_path) {
|
|
return 0;
|
|
}
|
|
free(item->string);
|
|
item->string = real_path;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
struct safe_directory_data {
|
|
const char *path;
|
|
int is_safe;
|
|
};
|
|
|
|
static int safe_directory_cb(const char *key, const char *value,
|
|
const struct config_context *ctx UNUSED, void *d)
|
|
{
|
|
struct safe_directory_data *data = d;
|
|
|
|
if (strcmp(key, "safe.directory"))
|
|
return 0;
|
|
|
|
if (!value || !*value) {
|
|
data->is_safe = 0;
|
|
} else if (!strcmp(value, "*")) {
|
|
data->is_safe = 1;
|
|
} else {
|
|
const char *interpolated = NULL;
|
|
|
|
if (!git_config_pathname(&interpolated, key, value) &&
|
|
!fspathcmp(data->path, interpolated ? interpolated : value))
|
|
data->is_safe = 1;
|
|
|
|
free((char *)interpolated);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check if a repository is safe, by verifying the ownership of the
|
|
* worktree (if any), the git directory, and the gitfile (if any).
|
|
*
|
|
* Exemptions for known-safe repositories can be added via `safe.directory`
|
|
* config settings; for non-bare repositories, their worktree needs to be
|
|
* added, for bare ones their git directory.
|
|
*/
|
|
static int ensure_valid_ownership(const char *gitfile,
|
|
const char *worktree, const char *gitdir,
|
|
struct strbuf *report)
|
|
{
|
|
struct safe_directory_data data = {
|
|
.path = worktree ? worktree : gitdir
|
|
};
|
|
|
|
if (!git_env_bool("GIT_TEST_ASSUME_DIFFERENT_OWNER", 0) &&
|
|
(!gitfile || is_path_owned_by_current_user(gitfile, report)) &&
|
|
(!worktree || is_path_owned_by_current_user(worktree, report)) &&
|
|
(!gitdir || is_path_owned_by_current_user(gitdir, report)))
|
|
return 1;
|
|
|
|
/*
|
|
* data.path is the "path" that identifies the repository and it is
|
|
* constant regardless of what failed above. data.is_safe should be
|
|
* initialized to false, and might be changed by the callback.
|
|
*/
|
|
git_protected_config(safe_directory_cb, &data);
|
|
|
|
return data.is_safe;
|
|
}
|
|
|
|
static int allowed_bare_repo_cb(const char *key, const char *value,
|
|
const struct config_context *ctx UNUSED,
|
|
void *d)
|
|
{
|
|
enum allowed_bare_repo *allowed_bare_repo = d;
|
|
|
|
if (strcasecmp(key, "safe.bareRepository"))
|
|
return 0;
|
|
|
|
if (!strcmp(value, "explicit")) {
|
|
*allowed_bare_repo = ALLOWED_BARE_REPO_EXPLICIT;
|
|
return 0;
|
|
}
|
|
if (!strcmp(value, "all")) {
|
|
*allowed_bare_repo = ALLOWED_BARE_REPO_ALL;
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static enum allowed_bare_repo get_allowed_bare_repo(void)
|
|
{
|
|
enum allowed_bare_repo result = ALLOWED_BARE_REPO_ALL;
|
|
git_protected_config(allowed_bare_repo_cb, &result);
|
|
return result;
|
|
}
|
|
|
|
static const char *allowed_bare_repo_to_string(
|
|
enum allowed_bare_repo allowed_bare_repo)
|
|
{
|
|
switch (allowed_bare_repo) {
|
|
case ALLOWED_BARE_REPO_EXPLICIT:
|
|
return "explicit";
|
|
case ALLOWED_BARE_REPO_ALL:
|
|
return "all";
|
|
default:
|
|
BUG("invalid allowed_bare_repo %d",
|
|
allowed_bare_repo);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* We cannot decide in this function whether we are in the work tree or
|
|
* not, since the config can only be read _after_ this function was called.
|
|
*
|
|
* Also, we avoid changing any global state (such as the current working
|
|
* directory) to allow early callers.
|
|
*
|
|
* The directory where the search should start needs to be passed in via the
|
|
* `dir` parameter; upon return, the `dir` buffer will contain the path of
|
|
* the directory where the search ended, and `gitdir` will contain the path of
|
|
* the discovered .git/ directory, if any. If `gitdir` is not absolute, it
|
|
* is relative to `dir` (i.e. *not* necessarily the cwd).
|
|
*/
|
|
static enum discovery_result setup_git_directory_gently_1(struct strbuf *dir,
|
|
struct strbuf *gitdir,
|
|
struct strbuf *report,
|
|
int die_on_error)
|
|
{
|
|
const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
|
|
struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
|
|
const char *gitdirenv;
|
|
int ceil_offset = -1, min_offset = offset_1st_component(dir->buf);
|
|
dev_t current_device = 0;
|
|
int one_filesystem = 1;
|
|
|
|
/*
|
|
* If GIT_DIR is set explicitly, we're not going
|
|
* to do any discovery, but we still do repository
|
|
* validation.
|
|
*/
|
|
gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
|
|
if (gitdirenv) {
|
|
strbuf_addstr(gitdir, gitdirenv);
|
|
return GIT_DIR_EXPLICIT;
|
|
}
|
|
|
|
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(dir->buf, &ceiling_dirs);
|
|
string_list_clear(&ceiling_dirs, 0);
|
|
}
|
|
|
|
if (ceil_offset < 0)
|
|
ceil_offset = min_offset - 2;
|
|
|
|
if (min_offset && min_offset == dir->len &&
|
|
!is_dir_sep(dir->buf[min_offset - 1])) {
|
|
strbuf_addch(dir, '/');
|
|
min_offset++;
|
|
}
|
|
|
|
/*
|
|
* Test in the following order (relative to the dir):
|
|
* - .git (file containing "gitdir: <path>")
|
|
* - .git/
|
|
* - ./ (bare)
|
|
* - ../.git
|
|
* - ../.git/
|
|
* - ../ (bare)
|
|
* - ../../.git
|
|
* etc.
|
|
*/
|
|
one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
|
|
if (one_filesystem)
|
|
current_device = get_device_or_die(dir->buf, NULL, 0);
|
|
for (;;) {
|
|
int offset = dir->len, error_code = 0;
|
|
char *gitdir_path = NULL;
|
|
char *gitfile = NULL;
|
|
|
|
if (offset > min_offset)
|
|
strbuf_addch(dir, '/');
|
|
strbuf_addstr(dir, DEFAULT_GIT_DIR_ENVIRONMENT);
|
|
gitdirenv = read_gitfile_gently(dir->buf, die_on_error ?
|
|
NULL : &error_code);
|
|
if (!gitdirenv) {
|
|
if (die_on_error ||
|
|
error_code == READ_GITFILE_ERR_NOT_A_FILE) {
|
|
/* NEEDSWORK: fail if .git is not file nor dir */
|
|
if (is_git_directory(dir->buf)) {
|
|
gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT;
|
|
gitdir_path = xstrdup(dir->buf);
|
|
}
|
|
} else if (error_code != READ_GITFILE_ERR_STAT_FAILED)
|
|
return GIT_DIR_INVALID_GITFILE;
|
|
} else
|
|
gitfile = xstrdup(dir->buf);
|
|
/*
|
|
* Earlier, we tentatively added DEFAULT_GIT_DIR_ENVIRONMENT
|
|
* to check that directory for a repository.
|
|
* Now trim that tentative addition away, because we want to
|
|
* focus on the real directory we are in.
|
|
*/
|
|
strbuf_setlen(dir, offset);
|
|
if (gitdirenv) {
|
|
enum discovery_result ret;
|
|
const char *gitdir_candidate =
|
|
gitdir_path ? gitdir_path : gitdirenv;
|
|
|
|
if (ensure_valid_ownership(gitfile, dir->buf,
|
|
gitdir_candidate, report)) {
|
|
strbuf_addstr(gitdir, gitdirenv);
|
|
ret = GIT_DIR_DISCOVERED;
|
|
} else
|
|
ret = GIT_DIR_INVALID_OWNERSHIP;
|
|
|
|
/*
|
|
* Earlier, during discovery, we might have allocated
|
|
* string copies for gitdir_path or gitfile so make
|
|
* sure we don't leak by freeing them now, before
|
|
* leaving the loop and function.
|
|
*
|
|
* Note: gitdirenv will be non-NULL whenever these are
|
|
* allocated, therefore we need not take care of releasing
|
|
* them outside of this conditional block.
|
|
*/
|
|
free(gitdir_path);
|
|
free(gitfile);
|
|
|
|
return ret;
|
|
}
|
|
|
|
if (is_git_directory(dir->buf)) {
|
|
trace2_data_string("setup", NULL, "implicit-bare-repository", dir->buf);
|
|
if (get_allowed_bare_repo() == ALLOWED_BARE_REPO_EXPLICIT)
|
|
return GIT_DIR_DISALLOWED_BARE;
|
|
if (!ensure_valid_ownership(NULL, NULL, dir->buf, report))
|
|
return GIT_DIR_INVALID_OWNERSHIP;
|
|
strbuf_addstr(gitdir, ".");
|
|
return GIT_DIR_BARE;
|
|
}
|
|
|
|
if (offset <= min_offset)
|
|
return GIT_DIR_HIT_CEILING;
|
|
|
|
while (--offset > ceil_offset && !is_dir_sep(dir->buf[offset]))
|
|
; /* continue */
|
|
if (offset <= ceil_offset)
|
|
return GIT_DIR_HIT_CEILING;
|
|
|
|
strbuf_setlen(dir, offset > min_offset ? offset : min_offset);
|
|
if (one_filesystem &&
|
|
current_device != get_device_or_die(dir->buf, NULL, offset))
|
|
return GIT_DIR_HIT_MOUNT_POINT;
|
|
}
|
|
}
|
|
|
|
enum discovery_result discover_git_directory_reason(struct strbuf *commondir,
|
|
struct strbuf *gitdir)
|
|
{
|
|
struct strbuf dir = STRBUF_INIT, err = STRBUF_INIT;
|
|
size_t gitdir_offset = gitdir->len, cwd_len;
|
|
size_t commondir_offset = commondir->len;
|
|
struct repository_format candidate = REPOSITORY_FORMAT_INIT;
|
|
enum discovery_result result;
|
|
|
|
if (strbuf_getcwd(&dir))
|
|
return GIT_DIR_CWD_FAILURE;
|
|
|
|
cwd_len = dir.len;
|
|
result = setup_git_directory_gently_1(&dir, gitdir, NULL, 0);
|
|
if (result <= 0) {
|
|
strbuf_release(&dir);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* The returned gitdir is relative to dir, and if dir does not reflect
|
|
* the current working directory, we simply make the gitdir absolute.
|
|
*/
|
|
if (dir.len < cwd_len && !is_absolute_path(gitdir->buf + gitdir_offset)) {
|
|
/* Avoid a trailing "/." */
|
|
if (!strcmp(".", gitdir->buf + gitdir_offset))
|
|
strbuf_setlen(gitdir, gitdir_offset);
|
|
else
|
|
strbuf_addch(&dir, '/');
|
|
strbuf_insert(gitdir, gitdir_offset, dir.buf, dir.len);
|
|
}
|
|
|
|
get_common_dir(commondir, gitdir->buf + gitdir_offset);
|
|
|
|
strbuf_reset(&dir);
|
|
strbuf_addf(&dir, "%s/config", commondir->buf + commondir_offset);
|
|
read_repository_format(&candidate, dir.buf);
|
|
strbuf_release(&dir);
|
|
|
|
if (verify_repository_format(&candidate, &err) < 0) {
|
|
warning("ignoring git dir '%s': %s",
|
|
gitdir->buf + gitdir_offset, err.buf);
|
|
strbuf_release(&err);
|
|
strbuf_setlen(commondir, commondir_offset);
|
|
strbuf_setlen(gitdir, gitdir_offset);
|
|
clear_repository_format(&candidate);
|
|
return GIT_DIR_INVALID_FORMAT;
|
|
}
|
|
|
|
clear_repository_format(&candidate);
|
|
return result;
|
|
}
|
|
|
|
const char *setup_git_directory_gently(int *nongit_ok)
|
|
{
|
|
static struct strbuf cwd = STRBUF_INIT;
|
|
struct strbuf dir = STRBUF_INIT, gitdir = STRBUF_INIT, report = STRBUF_INIT;
|
|
const char *prefix = NULL;
|
|
struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT;
|
|
|
|
/*
|
|
* 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
|
|
* updated accordingly.
|
|
*/
|
|
if (nongit_ok)
|
|
*nongit_ok = 0;
|
|
|
|
if (strbuf_getcwd(&cwd))
|
|
die_errno(_("Unable to read current working directory"));
|
|
strbuf_addbuf(&dir, &cwd);
|
|
|
|
switch (setup_git_directory_gently_1(&dir, &gitdir, &report, 1)) {
|
|
case GIT_DIR_EXPLICIT:
|
|
prefix = setup_explicit_git_dir(gitdir.buf, &cwd, &repo_fmt, nongit_ok);
|
|
break;
|
|
case GIT_DIR_DISCOVERED:
|
|
if (dir.len < cwd.len && chdir(dir.buf))
|
|
die(_("cannot change to '%s'"), dir.buf);
|
|
prefix = setup_discovered_git_dir(gitdir.buf, &cwd, dir.len,
|
|
&repo_fmt, nongit_ok);
|
|
break;
|
|
case GIT_DIR_BARE:
|
|
if (dir.len < cwd.len && chdir(dir.buf))
|
|
die(_("cannot change to '%s'"), dir.buf);
|
|
prefix = setup_bare_git_dir(&cwd, dir.len, &repo_fmt, nongit_ok);
|
|
break;
|
|
case GIT_DIR_HIT_CEILING:
|
|
if (!nongit_ok)
|
|
die(_("not a git repository (or any of the parent directories): %s"),
|
|
DEFAULT_GIT_DIR_ENVIRONMENT);
|
|
*nongit_ok = 1;
|
|
break;
|
|
case GIT_DIR_HIT_MOUNT_POINT:
|
|
if (!nongit_ok)
|
|
die(_("not a git repository (or any parent up to mount point %s)\n"
|
|
"Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set)."),
|
|
dir.buf);
|
|
*nongit_ok = 1;
|
|
break;
|
|
case GIT_DIR_INVALID_OWNERSHIP:
|
|
if (!nongit_ok) {
|
|
struct strbuf quoted = STRBUF_INIT;
|
|
|
|
strbuf_complete(&report, '\n');
|
|
sq_quote_buf_pretty("ed, dir.buf);
|
|
die(_("detected dubious ownership in repository at '%s'\n"
|
|
"%s"
|
|
"To add an exception for this directory, call:\n"
|
|
"\n"
|
|
"\tgit config --global --add safe.directory %s"),
|
|
dir.buf, report.buf, quoted.buf);
|
|
}
|
|
*nongit_ok = 1;
|
|
break;
|
|
case GIT_DIR_DISALLOWED_BARE:
|
|
if (!nongit_ok) {
|
|
die(_("cannot use bare repository '%s' (safe.bareRepository is '%s')"),
|
|
dir.buf,
|
|
allowed_bare_repo_to_string(get_allowed_bare_repo()));
|
|
}
|
|
*nongit_ok = 1;
|
|
break;
|
|
case GIT_DIR_CWD_FAILURE:
|
|
case GIT_DIR_INVALID_FORMAT:
|
|
/*
|
|
* As a safeguard against setup_git_directory_gently_1 returning
|
|
* these values, fallthrough to BUG. Otherwise it is possible to
|
|
* set startup_info->have_repository to 1 when we did nothing to
|
|
* find a repository.
|
|
*/
|
|
default:
|
|
BUG("unhandled setup_git_directory_gently_1() result");
|
|
}
|
|
|
|
/*
|
|
* At this point, nongit_ok is stable. If it is non-NULL and points
|
|
* to a non-zero value, then this means that we haven't found a
|
|
* repository and that the caller expects startup_info to reflect
|
|
* this.
|
|
*
|
|
* Regardless of the state of nongit_ok, startup_info->prefix and
|
|
* the GIT_PREFIX environment variable must always match. For details
|
|
* see Documentation/config/alias.txt.
|
|
*/
|
|
if (nongit_ok && *nongit_ok)
|
|
startup_info->have_repository = 0;
|
|
else
|
|
startup_info->have_repository = 1;
|
|
|
|
/*
|
|
* Not all paths through the setup code will call 'set_git_dir()' (which
|
|
* directly sets up the environment) so in order to guarantee that the
|
|
* environment is in a consistent state after setup, explicitly setup
|
|
* the environment if we have a repository.
|
|
*
|
|
* NEEDSWORK: currently we allow bogus GIT_DIR values to be set in some
|
|
* code paths so we also need to explicitly setup the environment if
|
|
* the user has set GIT_DIR. It may be beneficial to disallow bogus
|
|
* GIT_DIR values at some point in the future.
|
|
*/
|
|
if (/* GIT_DIR_EXPLICIT, GIT_DIR_DISCOVERED, GIT_DIR_BARE */
|
|
startup_info->have_repository ||
|
|
/* GIT_DIR_EXPLICIT */
|
|
getenv(GIT_DIR_ENVIRONMENT)) {
|
|
if (!the_repository->gitdir) {
|
|
const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
|
|
if (!gitdir)
|
|
gitdir = DEFAULT_GIT_DIR_ENVIRONMENT;
|
|
setup_git_env(gitdir);
|
|
}
|
|
if (startup_info->have_repository) {
|
|
repo_set_hash_algo(the_repository, repo_fmt.hash_algo);
|
|
the_repository->repository_format_worktree_config =
|
|
repo_fmt.worktree_config;
|
|
/* take ownership of repo_fmt.partial_clone */
|
|
the_repository->repository_format_partial_clone =
|
|
repo_fmt.partial_clone;
|
|
repo_fmt.partial_clone = NULL;
|
|
}
|
|
}
|
|
/*
|
|
* Since precompose_string_if_needed() needs to look at
|
|
* the core.precomposeunicode configuration, this
|
|
* has to happen after the above block that finds
|
|
* out where the repository is, i.e. a preparation
|
|
* for calling git_config_get_bool().
|
|
*/
|
|
if (prefix) {
|
|
prefix = precompose_string_if_needed(prefix);
|
|
startup_info->prefix = prefix;
|
|
setenv(GIT_PREFIX_ENVIRONMENT, prefix, 1);
|
|
} else {
|
|
startup_info->prefix = NULL;
|
|
setenv(GIT_PREFIX_ENVIRONMENT, "", 1);
|
|
}
|
|
|
|
setup_original_cwd();
|
|
|
|
strbuf_release(&dir);
|
|
strbuf_release(&gitdir);
|
|
strbuf_release(&report);
|
|
clear_repository_format(&repo_fmt);
|
|
|
|
return prefix;
|
|
}
|
|
|
|
int git_config_perm(const char *var, const char *value)
|
|
{
|
|
int i;
|
|
char *endptr;
|
|
|
|
if (!value)
|
|
return PERM_GROUP;
|
|
|
|
if (!strcmp(value, "umask"))
|
|
return PERM_UMASK;
|
|
if (!strcmp(value, "group"))
|
|
return PERM_GROUP;
|
|
if (!strcmp(value, "all") ||
|
|
!strcmp(value, "world") ||
|
|
!strcmp(value, "everybody"))
|
|
return PERM_EVERYBODY;
|
|
|
|
/* Parse octal numbers */
|
|
i = strtol(value, &endptr, 8);
|
|
|
|
/* If not an octal number, maybe true/false? */
|
|
if (*endptr != 0)
|
|
return git_config_bool(var, value) ? PERM_GROUP : PERM_UMASK;
|
|
|
|
/*
|
|
* Treat values 0, 1 and 2 as compatibility cases, otherwise it is
|
|
* a chmod value to restrict to.
|
|
*/
|
|
switch (i) {
|
|
case PERM_UMASK: /* 0 */
|
|
return PERM_UMASK;
|
|
case OLD_PERM_GROUP: /* 1 */
|
|
return PERM_GROUP;
|
|
case OLD_PERM_EVERYBODY: /* 2 */
|
|
return PERM_EVERYBODY;
|
|
}
|
|
|
|
/* A filemode value was given: 0xxx */
|
|
|
|
if ((i & 0600) != 0600)
|
|
die(_("problem with core.sharedRepository filemode value "
|
|
"(0%.3o).\nThe owner of files must always have "
|
|
"read and write permissions."), i);
|
|
|
|
/*
|
|
* Mask filemode value. Others can not get write permission.
|
|
* x flags for directories are handled separately.
|
|
*/
|
|
return -(i & 0666);
|
|
}
|
|
|
|
void check_repository_format(struct repository_format *fmt)
|
|
{
|
|
struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT;
|
|
if (!fmt)
|
|
fmt = &repo_fmt;
|
|
check_repository_format_gently(get_git_dir(), fmt, NULL);
|
|
startup_info->have_repository = 1;
|
|
repo_set_hash_algo(the_repository, fmt->hash_algo);
|
|
the_repository->repository_format_worktree_config =
|
|
fmt->worktree_config;
|
|
the_repository->repository_format_partial_clone =
|
|
xstrdup_or_null(fmt->partial_clone);
|
|
clear_repository_format(&repo_fmt);
|
|
}
|
|
|
|
/*
|
|
* Returns the "prefix", a path to the current working directory
|
|
* relative to the work tree root, or NULL, if the current working
|
|
* directory is not a strict subdirectory of the work tree root. The
|
|
* prefix always ends with a '/' character.
|
|
*/
|
|
const char *setup_git_directory(void)
|
|
{
|
|
return setup_git_directory_gently(NULL);
|
|
}
|
|
|
|
const char *resolve_gitdir_gently(const char *suspect, int *return_error_code)
|
|
{
|
|
if (is_git_directory(suspect))
|
|
return suspect;
|
|
return read_gitfile_gently(suspect, return_error_code);
|
|
}
|
|
|
|
/* if any standard file descriptor is missing open it to /dev/null */
|
|
void sanitize_stdfds(void)
|
|
{
|
|
int fd = xopen("/dev/null", O_RDWR);
|
|
while (fd < 2)
|
|
fd = xdup(fd);
|
|
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
|
|
}
|
|
|
|
#ifdef NO_TRUSTABLE_FILEMODE
|
|
#define TEST_FILEMODE 0
|
|
#else
|
|
#define TEST_FILEMODE 1
|
|
#endif
|
|
|
|
#define GIT_DEFAULT_HASH_ENVIRONMENT "GIT_DEFAULT_HASH"
|
|
|
|
static void copy_templates_1(struct strbuf *path, struct strbuf *template_path,
|
|
DIR *dir)
|
|
{
|
|
size_t path_baselen = path->len;
|
|
size_t template_baselen = template_path->len;
|
|
struct dirent *de;
|
|
|
|
/* Note: if ".git/hooks" file exists in the repository being
|
|
* re-initialized, /etc/core-git/templates/hooks/update would
|
|
* cause "git init" to fail here. I think this is sane but
|
|
* it means that the set of templates we ship by default, along
|
|
* with the way the namespace under .git/ is organized, should
|
|
* be really carefully chosen.
|
|
*/
|
|
safe_create_dir(path->buf, 1);
|
|
while ((de = readdir(dir)) != NULL) {
|
|
struct stat st_git, st_template;
|
|
int exists = 0;
|
|
|
|
strbuf_setlen(path, path_baselen);
|
|
strbuf_setlen(template_path, template_baselen);
|
|
|
|
if (de->d_name[0] == '.')
|
|
continue;
|
|
strbuf_addstr(path, de->d_name);
|
|
strbuf_addstr(template_path, de->d_name);
|
|
if (lstat(path->buf, &st_git)) {
|
|
if (errno != ENOENT)
|
|
die_errno(_("cannot stat '%s'"), path->buf);
|
|
}
|
|
else
|
|
exists = 1;
|
|
|
|
if (lstat(template_path->buf, &st_template))
|
|
die_errno(_("cannot stat template '%s'"), template_path->buf);
|
|
|
|
if (S_ISDIR(st_template.st_mode)) {
|
|
DIR *subdir = opendir(template_path->buf);
|
|
if (!subdir)
|
|
die_errno(_("cannot opendir '%s'"), template_path->buf);
|
|
strbuf_addch(path, '/');
|
|
strbuf_addch(template_path, '/');
|
|
copy_templates_1(path, template_path, subdir);
|
|
closedir(subdir);
|
|
}
|
|
else if (exists)
|
|
continue;
|
|
else if (S_ISLNK(st_template.st_mode)) {
|
|
struct strbuf lnk = STRBUF_INIT;
|
|
if (strbuf_readlink(&lnk, template_path->buf,
|
|
st_template.st_size) < 0)
|
|
die_errno(_("cannot readlink '%s'"), template_path->buf);
|
|
if (symlink(lnk.buf, path->buf))
|
|
die_errno(_("cannot symlink '%s' '%s'"),
|
|
lnk.buf, path->buf);
|
|
strbuf_release(&lnk);
|
|
}
|
|
else if (S_ISREG(st_template.st_mode)) {
|
|
if (copy_file(path->buf, template_path->buf, st_template.st_mode))
|
|
die_errno(_("cannot copy '%s' to '%s'"),
|
|
template_path->buf, path->buf);
|
|
}
|
|
else
|
|
error(_("ignoring template %s"), template_path->buf);
|
|
}
|
|
}
|
|
|
|
static void copy_templates(const char *template_dir, const char *init_template_dir)
|
|
{
|
|
struct strbuf path = STRBUF_INIT;
|
|
struct strbuf template_path = STRBUF_INIT;
|
|
size_t template_len;
|
|
struct repository_format template_format = REPOSITORY_FORMAT_INIT;
|
|
struct strbuf err = STRBUF_INIT;
|
|
DIR *dir;
|
|
char *to_free = NULL;
|
|
|
|
if (!template_dir)
|
|
template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
|
|
if (!template_dir)
|
|
template_dir = init_template_dir;
|
|
if (!template_dir)
|
|
template_dir = to_free = system_path(DEFAULT_GIT_TEMPLATE_DIR);
|
|
if (!template_dir[0]) {
|
|
free(to_free);
|
|
return;
|
|
}
|
|
|
|
strbuf_addstr(&template_path, template_dir);
|
|
strbuf_complete(&template_path, '/');
|
|
template_len = template_path.len;
|
|
|
|
dir = opendir(template_path.buf);
|
|
if (!dir) {
|
|
warning(_("templates not found in %s"), template_dir);
|
|
goto free_return;
|
|
}
|
|
|
|
/* Make sure that template is from the correct vintage */
|
|
strbuf_addstr(&template_path, "config");
|
|
read_repository_format(&template_format, template_path.buf);
|
|
strbuf_setlen(&template_path, template_len);
|
|
|
|
/*
|
|
* No mention of version at all is OK, but anything else should be
|
|
* verified.
|
|
*/
|
|
if (template_format.version >= 0 &&
|
|
verify_repository_format(&template_format, &err) < 0) {
|
|
warning(_("not copying templates from '%s': %s"),
|
|
template_dir, err.buf);
|
|
strbuf_release(&err);
|
|
goto close_free_return;
|
|
}
|
|
|
|
strbuf_addstr(&path, get_git_common_dir());
|
|
strbuf_complete(&path, '/');
|
|
copy_templates_1(&path, &template_path, dir);
|
|
close_free_return:
|
|
closedir(dir);
|
|
free_return:
|
|
free(to_free);
|
|
strbuf_release(&path);
|
|
strbuf_release(&template_path);
|
|
clear_repository_format(&template_format);
|
|
}
|
|
|
|
/*
|
|
* If the git_dir is not directly inside the working tree, then git will not
|
|
* find it by default, and we need to set the worktree explicitly.
|
|
*/
|
|
static int needs_work_tree_config(const char *git_dir, const char *work_tree)
|
|
{
|
|
if (!strcmp(work_tree, "/") && !strcmp(git_dir, "/.git"))
|
|
return 0;
|
|
if (skip_prefix(git_dir, work_tree, &git_dir) &&
|
|
!strcmp(git_dir, "/.git"))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
void initialize_repository_version(int hash_algo, int reinit)
|
|
{
|
|
char repo_version_string[10];
|
|
int repo_version = GIT_REPO_VERSION;
|
|
|
|
if (hash_algo != GIT_HASH_SHA1)
|
|
repo_version = GIT_REPO_VERSION_READ;
|
|
|
|
/* This forces creation of new config file */
|
|
xsnprintf(repo_version_string, sizeof(repo_version_string),
|
|
"%d", repo_version);
|
|
git_config_set("core.repositoryformatversion", repo_version_string);
|
|
|
|
if (hash_algo != GIT_HASH_SHA1)
|
|
git_config_set("extensions.objectformat",
|
|
hash_algos[hash_algo].name);
|
|
else if (reinit)
|
|
git_config_set_gently("extensions.objectformat", NULL);
|
|
}
|
|
|
|
static int create_default_files(const char *template_path,
|
|
const char *original_git_dir,
|
|
const char *initial_branch,
|
|
const struct repository_format *fmt,
|
|
int prev_bare_repository,
|
|
int init_shared_repository,
|
|
int quiet)
|
|
{
|
|
struct stat st1;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
char *path;
|
|
char junk[2];
|
|
int reinit;
|
|
int filemode;
|
|
struct strbuf err = STRBUF_INIT;
|
|
const char *init_template_dir = NULL;
|
|
const char *work_tree = get_git_work_tree();
|
|
|
|
/*
|
|
* First copy the templates -- we might have the default
|
|
* config file there, in which case we would want to read
|
|
* from it after installing.
|
|
*
|
|
* Before reading that config, we also need to clear out any cached
|
|
* values (since we've just potentially changed what's available on
|
|
* disk).
|
|
*/
|
|
git_config_get_pathname("init.templatedir", &init_template_dir);
|
|
copy_templates(template_path, init_template_dir);
|
|
free((char *)init_template_dir);
|
|
git_config_clear();
|
|
reset_shared_repository();
|
|
git_config(git_default_config, NULL);
|
|
|
|
/*
|
|
* We must make sure command-line options continue to override any
|
|
* values we might have just re-read from the config.
|
|
*/
|
|
if (init_shared_repository != -1)
|
|
set_shared_repository(init_shared_repository);
|
|
/*
|
|
* TODO: heed core.bare from config file in templates if no
|
|
* command-line override given
|
|
*/
|
|
is_bare_repository_cfg = prev_bare_repository || !work_tree;
|
|
/* TODO (continued):
|
|
*
|
|
* Unfortunately, the line above is equivalent to
|
|
* is_bare_repository_cfg = !work_tree;
|
|
* which ignores the config entirely even if no `--[no-]bare`
|
|
* command line option was present.
|
|
*
|
|
* To see why, note that before this function, there was this call:
|
|
* prev_bare_repository = is_bare_repository()
|
|
* expanding the right hand side:
|
|
* = is_bare_repository_cfg && !get_git_work_tree()
|
|
* = is_bare_repository_cfg && !work_tree
|
|
* note that the last simplification above is valid because nothing
|
|
* calls repo_init() or set_git_work_tree() between any of the
|
|
* relevant calls in the code, and thus the !get_git_work_tree()
|
|
* calls will return the same result each time. So, what we are
|
|
* interested in computing is the right hand side of the line of
|
|
* code just above this comment:
|
|
* prev_bare_repository || !work_tree
|
|
* = is_bare_repository_cfg && !work_tree || !work_tree
|
|
* = !work_tree
|
|
* because "A && !B || !B == !B" for all boolean values of A & B.
|
|
*/
|
|
|
|
/*
|
|
* We would have created the above under user's umask -- under
|
|
* shared-repository settings, we would need to fix them up.
|
|
*/
|
|
if (get_shared_repository()) {
|
|
adjust_shared_perm(get_git_dir());
|
|
}
|
|
|
|
/*
|
|
* We need to create a "refs" dir in any case so that older
|
|
* versions of git can tell that this is a repository.
|
|
*/
|
|
safe_create_dir(git_path("refs"), 1);
|
|
adjust_shared_perm(git_path("refs"));
|
|
|
|
if (refs_init_db(&err))
|
|
die("failed to set up refs db: %s", err.buf);
|
|
|
|
/*
|
|
* Point the HEAD symref to the initial branch with if HEAD does
|
|
* not yet exist.
|
|
*/
|
|
path = git_path_buf(&buf, "HEAD");
|
|
reinit = (!access(path, R_OK)
|
|
|| readlink(path, junk, sizeof(junk)-1) != -1);
|
|
if (!reinit) {
|
|
char *ref;
|
|
|
|
if (!initial_branch)
|
|
initial_branch = git_default_branch_name(quiet);
|
|
|
|
ref = xstrfmt("refs/heads/%s", initial_branch);
|
|
if (check_refname_format(ref, 0) < 0)
|
|
die(_("invalid initial branch name: '%s'"),
|
|
initial_branch);
|
|
|
|
if (create_symref("HEAD", ref, NULL) < 0)
|
|
exit(1);
|
|
free(ref);
|
|
}
|
|
|
|
initialize_repository_version(fmt->hash_algo, 0);
|
|
|
|
/* Check filemode trustability */
|
|
path = git_path_buf(&buf, "config");
|
|
filemode = TEST_FILEMODE;
|
|
if (TEST_FILEMODE && !lstat(path, &st1)) {
|
|
struct stat st2;
|
|
filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) &&
|
|
!lstat(path, &st2) &&
|
|
st1.st_mode != st2.st_mode &&
|
|
!chmod(path, st1.st_mode));
|
|
if (filemode && !reinit && (st1.st_mode & S_IXUSR))
|
|
filemode = 0;
|
|
}
|
|
git_config_set("core.filemode", filemode ? "true" : "false");
|
|
|
|
if (is_bare_repository())
|
|
git_config_set("core.bare", "true");
|
|
else {
|
|
git_config_set("core.bare", "false");
|
|
/* allow template config file to override the default */
|
|
if (log_all_ref_updates == LOG_REFS_UNSET)
|
|
git_config_set("core.logallrefupdates", "true");
|
|
if (needs_work_tree_config(original_git_dir, work_tree))
|
|
git_config_set("core.worktree", work_tree);
|
|
}
|
|
|
|
if (!reinit) {
|
|
/* Check if symlink is supported in the work tree */
|
|
path = git_path_buf(&buf, "tXXXXXX");
|
|
if (!close(xmkstemp(path)) &&
|
|
!unlink(path) &&
|
|
!symlink("testing", path) &&
|
|
!lstat(path, &st1) &&
|
|
S_ISLNK(st1.st_mode))
|
|
unlink(path); /* good */
|
|
else
|
|
git_config_set("core.symlinks", "false");
|
|
|
|
/* Check if the filesystem is case-insensitive */
|
|
path = git_path_buf(&buf, "CoNfIg");
|
|
if (!access(path, F_OK))
|
|
git_config_set("core.ignorecase", "true");
|
|
probe_utf8_pathname_composition();
|
|
}
|
|
|
|
strbuf_release(&buf);
|
|
return reinit;
|
|
}
|
|
|
|
static void create_object_directory(void)
|
|
{
|
|
struct strbuf path = STRBUF_INIT;
|
|
size_t baselen;
|
|
|
|
strbuf_addstr(&path, get_object_directory());
|
|
baselen = path.len;
|
|
|
|
safe_create_dir(path.buf, 1);
|
|
|
|
strbuf_setlen(&path, baselen);
|
|
strbuf_addstr(&path, "/pack");
|
|
safe_create_dir(path.buf, 1);
|
|
|
|
strbuf_setlen(&path, baselen);
|
|
strbuf_addstr(&path, "/info");
|
|
safe_create_dir(path.buf, 1);
|
|
|
|
strbuf_release(&path);
|
|
}
|
|
|
|
static void separate_git_dir(const char *git_dir, const char *git_link)
|
|
{
|
|
struct stat st;
|
|
|
|
if (!stat(git_link, &st)) {
|
|
const char *src;
|
|
|
|
if (S_ISREG(st.st_mode))
|
|
src = read_gitfile(git_link);
|
|
else if (S_ISDIR(st.st_mode))
|
|
src = git_link;
|
|
else
|
|
die(_("unable to handle file type %d"), (int)st.st_mode);
|
|
|
|
if (rename(src, git_dir))
|
|
die_errno(_("unable to move %s to %s"), src, git_dir);
|
|
repair_worktrees(NULL, NULL);
|
|
}
|
|
|
|
write_file(git_link, "gitdir: %s", git_dir);
|
|
}
|
|
|
|
static void validate_hash_algorithm(struct repository_format *repo_fmt, int hash)
|
|
{
|
|
const char *env = getenv(GIT_DEFAULT_HASH_ENVIRONMENT);
|
|
/*
|
|
* If we already have an initialized repo, don't allow the user to
|
|
* specify a different algorithm, as that could cause corruption.
|
|
* Otherwise, if the user has specified one on the command line, use it.
|
|
*/
|
|
if (repo_fmt->version >= 0 && hash != GIT_HASH_UNKNOWN && hash != repo_fmt->hash_algo)
|
|
die(_("attempt to reinitialize repository with different hash"));
|
|
else if (hash != GIT_HASH_UNKNOWN)
|
|
repo_fmt->hash_algo = hash;
|
|
else if (env) {
|
|
int env_algo = hash_algo_by_name(env);
|
|
if (env_algo == GIT_HASH_UNKNOWN)
|
|
die(_("unknown hash algorithm '%s'"), env);
|
|
repo_fmt->hash_algo = env_algo;
|
|
}
|
|
}
|
|
|
|
int init_db(const char *git_dir, const char *real_git_dir,
|
|
const char *template_dir, int hash, const char *initial_branch,
|
|
int init_shared_repository, unsigned int flags)
|
|
{
|
|
int reinit;
|
|
int exist_ok = flags & INIT_DB_EXIST_OK;
|
|
char *original_git_dir = real_pathdup(git_dir, 1);
|
|
struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT;
|
|
int prev_bare_repository;
|
|
|
|
if (real_git_dir) {
|
|
struct stat st;
|
|
|
|
if (!exist_ok && !stat(git_dir, &st))
|
|
die(_("%s already exists"), git_dir);
|
|
|
|
if (!exist_ok && !stat(real_git_dir, &st))
|
|
die(_("%s already exists"), real_git_dir);
|
|
|
|
set_git_dir(real_git_dir, 1);
|
|
git_dir = get_git_dir();
|
|
separate_git_dir(git_dir, original_git_dir);
|
|
}
|
|
else {
|
|
set_git_dir(git_dir, 1);
|
|
git_dir = get_git_dir();
|
|
}
|
|
startup_info->have_repository = 1;
|
|
|
|
/* Ensure `core.hidedotfiles` is processed */
|
|
git_config(platform_core_config, NULL);
|
|
|
|
safe_create_dir(git_dir, 0);
|
|
|
|
prev_bare_repository = is_bare_repository();
|
|
|
|
/* Check to see if the repository version is right.
|
|
* Note that a newly created repository does not have
|
|
* config file, so this will not fail. What we are catching
|
|
* is an attempt to reinitialize new repository with an old tool.
|
|
*/
|
|
check_repository_format(&repo_fmt);
|
|
|
|
validate_hash_algorithm(&repo_fmt, hash);
|
|
|
|
reinit = create_default_files(template_dir, original_git_dir,
|
|
initial_branch, &repo_fmt,
|
|
prev_bare_repository,
|
|
init_shared_repository,
|
|
flags & INIT_DB_QUIET);
|
|
if (reinit && initial_branch)
|
|
warning(_("re-init: ignored --initial-branch=%s"),
|
|
initial_branch);
|
|
|
|
create_object_directory();
|
|
|
|
if (get_shared_repository()) {
|
|
char buf[10];
|
|
/* We do not spell "group" and such, so that
|
|
* the configuration can be read by older version
|
|
* of git. Note, we use octal numbers for new share modes,
|
|
* and compatibility values for PERM_GROUP and
|
|
* PERM_EVERYBODY.
|
|
*/
|
|
if (get_shared_repository() < 0)
|
|
/* force to the mode value */
|
|
xsnprintf(buf, sizeof(buf), "0%o", -get_shared_repository());
|
|
else if (get_shared_repository() == PERM_GROUP)
|
|
xsnprintf(buf, sizeof(buf), "%d", OLD_PERM_GROUP);
|
|
else if (get_shared_repository() == PERM_EVERYBODY)
|
|
xsnprintf(buf, sizeof(buf), "%d", OLD_PERM_EVERYBODY);
|
|
else
|
|
BUG("invalid value for shared_repository");
|
|
git_config_set("core.sharedrepository", buf);
|
|
git_config_set("receive.denyNonFastforwards", "true");
|
|
}
|
|
|
|
if (!(flags & INIT_DB_QUIET)) {
|
|
int len = strlen(git_dir);
|
|
|
|
if (reinit)
|
|
printf(get_shared_repository()
|
|
? _("Reinitialized existing shared Git repository in %s%s\n")
|
|
: _("Reinitialized existing Git repository in %s%s\n"),
|
|
git_dir, len && git_dir[len-1] != '/' ? "/" : "");
|
|
else
|
|
printf(get_shared_repository()
|
|
? _("Initialized empty shared Git repository in %s%s\n")
|
|
: _("Initialized empty Git repository in %s%s\n"),
|
|
git_dir, len && git_dir[len-1] != '/' ? "/" : "");
|
|
}
|
|
|
|
clear_repository_format(&repo_fmt);
|
|
free(original_git_dir);
|
|
return 0;
|
|
}
|