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object-file: move `safe_create_leading_directories()` into "path.c" 

The `safe_create_leading_directories()` function and its relatives are
located in "object-file.c", which is not a good fit as they provide
generic functionality not related to objects at all. Move them into
"path.c", which already hosts `safe_create_dir()` and its relative
`safe_create_dir_in_gitdir()`.

"path.c" is free of `the_repository`, but the moved functions depend on
`the_repository` to read the "core.sharedRepository" config. Adapt the
function signature to accept a repository as argument to fix the issue
and adjust callers accordingly.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Patrick Steinhardt 2025-04-15 11:38:15 +02:00 committed by Junio C Hamano
parent d1fa670de0
commit 1a99fe8010
27 changed files with 173 additions and 167 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
builtin/bugreport.c
View File

@ -4,13 +4,13 @@
#include "editor.h"
#include "gettext.h"
#include "parse-options.h"
#include "path.h"
#include "strbuf.h"
#include "help.h"
#include "compat/compiler.h"
#include "hook.h"
#include "hook-list.h"
#include "diagnose.h"
#include "object-file.h"
#include "setup.h"
#include "version.h"

@ -141,7 +141,7 @@ int cmd_bugreport(int argc,
}
strbuf_addstr(&report_path, ".txt");

switch (safe_create_leading_directories(report_path.buf)) {
switch (safe_create_leading_directories(the_repository, report_path.buf)) {
case SCLD_OK:
case SCLD_EXISTS:
break;

4
builtin/clone.c
View File

@ -1090,7 +1090,7 @@ int cmd_clone(int argc,
sigchain_push_common(remove_junk_on_signal);

if (!option_bare) {
if (safe_create_leading_directories_const(work_tree) < 0)
if (safe_create_leading_directories_const(the_repository, work_tree) < 0)
die_errno(_("could not create leading directories of '%s'"),
work_tree);
if (dest_exists)
@ -1111,7 +1111,7 @@ int cmd_clone(int argc,
junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
junk_git_dir = git_dir;
}
if (safe_create_leading_directories_const(git_dir) < 0)
if (safe_create_leading_directories_const(the_repository, git_dir) < 0)
die(_("could not create leading directories of '%s'"), git_dir);

if (0 <= option_verbosity) {

4
builtin/credential-cache--daemon.c
View File

@ -2,8 +2,8 @@
#include "builtin.h"
#include "abspath.h"
#include "gettext.h"
#include "object-file.h"
#include "parse-options.h"
#include "path.h"

#ifndef NO_UNIX_SOCKETS

@ -271,7 +271,7 @@ static void init_socket_directory(const char *path)
* condition in which somebody can chdir to it, sleep, then try to open
* our protected socket.
*/
if (safe_create_leading_directories_const(dir) < 0)
if (safe_create_leading_directories_const(the_repository, dir) < 0)
die_errno("unable to create directories for '%s'", dir);
if (mkdir(dir, 0700) < 0)
die_errno("unable to mkdir '%s'", dir);

4
builtin/diagnose.c
View File

@ -3,8 +3,8 @@
#include "builtin.h"
#include "abspath.h"
#include "gettext.h"
#include "object-file.h"
#include "parse-options.h"
#include "path.h"
#include "diagnose.h"

static const char * const diagnose_usage[] = {
@ -50,7 +50,7 @@ int cmd_diagnose(int argc,
strbuf_addftime(&zip_path, option_suffix, localtime_r(&now, &tm), 0, 0);
strbuf_addstr(&zip_path, ".zip");

switch (safe_create_leading_directories(zip_path.buf)) {
switch (safe_create_leading_directories(the_repository, zip_path.buf)) {
case SCLD_OK:
case SCLD_EXISTS:
break;

29
builtin/difftool.c
View File

@ -22,6 +22,7 @@
#include "gettext.h"
#include "hex.h"
#include "parse-options.h"
#include "path.h"
#include "read-cache-ll.h"
#include "repository.h"
#include "sparse-index.h"
@ -271,9 +272,9 @@ static void changed_files(struct repository *repo,
strbuf_release(&buf);
}

static int ensure_leading_directories(char *path)
static int ensure_leading_directories(struct repository *repo, char *path)
{
switch (safe_create_leading_directories(path)) {
switch (safe_create_leading_directories(repo, path)) {
case SCLD_OK:
case SCLD_EXISTS:
return 0;
@ -341,11 +342,12 @@ static int checkout_path(unsigned mode, struct object_id *oid,
return ret;
}

static void write_file_in_directory(struct strbuf *dir, size_t dir_len,
const char *path, const char *content)
static void write_file_in_directory(struct repository *repo,
struct strbuf *dir, size_t dir_len,
const char *path, const char *content)
{
add_path(dir, dir_len, path);
ensure_leading_directories(dir->buf);
ensure_leading_directories(repo, dir->buf);
unlink(dir->buf);
write_file(dir->buf, "%s", content);
}
@ -356,14 +358,15 @@ static void write_file_in_directory(struct strbuf *dir, size_t dir_len,
* as text files, resulting in behavior that is analogous to what "git diff"
* displays for symlink and submodule diffs.
*/
static void write_standin_files(struct pair_entry *entry,
struct strbuf *ldir, size_t ldir_len,
struct strbuf *rdir, size_t rdir_len)
static void write_standin_files(struct repository *repo,
struct pair_entry *entry,
struct strbuf *ldir, size_t ldir_len,
struct strbuf *rdir, size_t rdir_len)
{
if (*entry->left)
write_file_in_directory(ldir, ldir_len, entry->path, entry->left);
write_file_in_directory(repo, ldir, ldir_len, entry->path, entry->left);
if (*entry->right)
write_file_in_directory(rdir, rdir_len, entry->path, entry->right);
write_file_in_directory(repo, rdir, rdir_len, entry->path, entry->right);
}

static int run_dir_diff(struct repository *repo,
@ -533,7 +536,7 @@ static int run_dir_diff(struct repository *repo,
ADD_CACHE_JUST_APPEND);

add_path(&rdir, rdir_len, dst_path);
if (ensure_leading_directories(rdir.buf)) {
if (ensure_leading_directories(repo, rdir.buf)) {
ret = error("could not create "
"directory for '%s'",
dst_path);
@ -576,7 +579,7 @@ static int run_dir_diff(struct repository *repo,
*/
hashmap_for_each_entry(&submodules, &iter, entry,
entry /* member name */) {
write_standin_files(entry, &ldir, ldir_len, &rdir, rdir_len);
write_standin_files(repo, entry, &ldir, ldir_len, &rdir, rdir_len);
}

/*
@ -587,7 +590,7 @@ static int run_dir_diff(struct repository *repo,
hashmap_for_each_entry(&symlinks2, &iter, entry,
entry /* member name */) {

write_standin_files(entry, &ldir, ldir_len, &rdir, rdir_len);
write_standin_files(repo, entry, &ldir, ldir_len, &rdir, rdir_len);
}

strbuf_setlen(&ldir, ldir_len);

2
builtin/fast-import.c
View File

@ -1720,7 +1720,7 @@ static void dump_marks(void)
if (!export_marks_file || (import_marks_file && !import_marks_file_done))
return;

if (safe_create_leading_directories_const(export_marks_file)) {
if (safe_create_leading_directories_const(the_repository, export_marks_file)) {
failure |= error_errno("unable to create leading directories of %s",
export_marks_file);
return;

2
builtin/fsck.c
View File

@ -332,7 +332,7 @@ static void check_unreachable_object(struct object *obj)
describe_object(&obj->oid));
FILE *f;

if (safe_create_leading_directories_const(filename)) {
if (safe_create_leading_directories_const(the_repository, filename)) {
error(_("could not create lost-found"));
free(filename);
return;

7
builtin/gc.c
View File

@ -28,7 +28,6 @@
#include "commit.h"
#include "commit-graph.h"
#include "packfile.h"
#include "object-file.h"
#include "object-store-ll.h"
#include "pack.h"
#include "pack-objects.h"
@ -2099,7 +2098,7 @@ static int launchctl_schedule_plist(const char *exec_path, enum schedule_priorit
}
strbuf_addstr(&plist, "</array>\n</dict>\n</plist>\n");

if (safe_create_leading_directories(filename))
if (safe_create_leading_directories(the_repository, filename))
die(_("failed to create directories for '%s'"), filename);

if ((long)lock_file_timeout_ms < 0 &&
@ -2565,7 +2564,7 @@ static int systemd_timer_write_timer_file(enum schedule_priority schedule,

filename = xdg_config_home_systemd(local_timer_name);

if (safe_create_leading_directories(filename)) {
if (safe_create_leading_directories(the_repository, filename)) {
error(_("failed to create directories for '%s'"), filename);
goto error;
}
@ -2638,7 +2637,7 @@ static int systemd_timer_write_service_template(const char *exec_path)
char *local_service_name = xstrfmt(SYSTEMD_UNIT_FORMAT, "", "service");

filename = xdg_config_home_systemd(local_service_name);
if (safe_create_leading_directories(filename)) {
if (safe_create_leading_directories(the_repository, filename)) {
error(_("failed to create directories for '%s'"), filename);
goto error;
}

3
builtin/init-db.c
View File

@ -8,7 +8,6 @@
#include "abspath.h"
#include "environment.h"
#include "gettext.h"
#include "object-file.h"
#include "parse-options.h"
#include "path.h"
#include "refs.h"
@ -134,7 +133,7 @@ int cmd_init_db(int argc,
*/
saved = repo_settings_get_shared_repository(the_repository);
repo_settings_set_shared_repository(the_repository, 0);
switch (safe_create_leading_directories_const(argv[0])) {
switch (safe_create_leading_directories_const(the_repository, argv[0])) {
case SCLD_OK:
case SCLD_PERMS:
break;

4
builtin/log.c
View File

@ -14,7 +14,6 @@
#include "gettext.h"
#include "hex.h"
#include "refs.h"
#include "object-file.h"
#include "object-name.h"
#include "object-store-ll.h"
#include "pager.h"
@ -29,6 +28,7 @@
#include "tag.h"
#include "reflog-walk.h"
#include "patch-ids.h"
#include "path.h"
#include "shortlog.h"
#include "remote.h"
#include "string-list.h"
@ -2311,7 +2311,7 @@ int cmd_format_patch(int argc,
*/
saved = repo_settings_get_shared_repository(the_repository);
repo_settings_set_shared_repository(the_repository, 0);
switch (safe_create_leading_directories_const(output_directory)) {
switch (safe_create_leading_directories_const(the_repository, output_directory)) {
case SCLD_OK:
case SCLD_EXISTS:
break;

3
builtin/mv.c
View File

@ -15,6 +15,7 @@
#include "gettext.h"
#include "name-hash.h"
#include "object-file.h"
#include "path.h"
#include "pathspec.h"
#include "lockfile.h"
#include "dir.h"
@ -555,7 +556,7 @@ remove_entry:
*/
char *dst_dup = xstrdup(dst);
string_list_append(&dirty_paths, dst);
safe_create_leading_directories(dst_dup);
safe_create_leading_directories(the_repository, dst_dup);
FREE_AND_NULL(dst_dup);
rename(src, dst);
}

5
builtin/sparse-checkout.c
View File

@ -9,6 +9,7 @@
#include "object-file.h"
#include "object-name.h"
#include "parse-options.h"
#include "path.h"
#include "pathspec.h"
#include "strbuf.h"
#include "string-list.h"
@ -335,7 +336,7 @@ static int write_patterns_and_update(struct pattern_list *pl)

sparse_filename = get_sparse_checkout_filename();

if (safe_create_leading_directories(sparse_filename))
if (safe_create_leading_directories(the_repository, sparse_filename))
die(_("failed to create directory for sparse-checkout file"));

hold_lock_file_for_update(&lk, sparse_filename, LOCK_DIE_ON_ERROR);
@ -491,7 +492,7 @@ static int sparse_checkout_init(int argc, const char **argv, const char *prefix,
FILE *fp;

/* assume we are in a fresh repo, but update the sparse-checkout file */
if (safe_create_leading_directories(sparse_filename))
if (safe_create_leading_directories(the_repository, sparse_filename))
die(_("unable to create leading directories of %s"),
sparse_filename);
fp = xfopen(sparse_filename, "w");

4
builtin/submodule--helper.c
View File

@ -1739,7 +1739,7 @@ static int clone_submodule(const struct module_clone_data *clone_data,
!is_empty_dir(clone_data_path))
die(_("directory not empty: '%s'"), clone_data_path);

if (safe_create_leading_directories_const(sm_gitdir) < 0)
if (safe_create_leading_directories_const(the_repository, sm_gitdir) < 0)
die(_("could not create directory '%s'"), sm_gitdir);

prepare_possible_alternates(clone_data->name, reference);
@ -1800,7 +1800,7 @@ static int clone_submodule(const struct module_clone_data *clone_data,
if (clone_data->require_init && !stat(clone_data_path, &st) &&
!is_empty_dir(clone_data_path))
die(_("directory not empty: '%s'"), clone_data_path);
if (safe_create_leading_directories_const(clone_data_path) < 0)
if (safe_create_leading_directories_const(the_repository, clone_data_path) < 0)
die(_("could not create directory '%s'"), clone_data_path);
path = xstrfmt("%s/index", sm_gitdir);
unlink_or_warn(path);

8
builtin/worktree.c
View File

@ -348,7 +348,7 @@ static void copy_sparse_checkout(const char *worktree_git_dir)
char *to_file = xstrfmt("%s/info/sparse-checkout", worktree_git_dir);

if (file_exists(from_file)) {
if (safe_create_leading_directories(to_file) ||
if (safe_create_leading_directories(the_repository, to_file) ||
copy_file(to_file, from_file, 0666))
error(_("failed to copy '%s' to '%s'; sparse-checkout may not work correctly"),
from_file, to_file);
@ -367,7 +367,7 @@ static void copy_filtered_worktree_config(const char *worktree_git_dir)
struct config_set cs = { { 0 } };
int bare;

if (safe_create_leading_directories(to_file) ||
if (safe_create_leading_directories(the_repository, to_file) ||
copy_file(to_file, from_file, 0666)) {
error(_("failed to copy worktree config from '%s' to '%s'"),
from_file, to_file);
@ -466,7 +466,7 @@ static int add_worktree(const char *path, const char *refname,
name = sb_name.buf;
repo_git_path_replace(the_repository, &sb_repo, "worktrees/%s", name);
len = sb_repo.len;
if (safe_create_leading_directories_const(sb_repo.buf))
if (safe_create_leading_directories_const(the_repository, sb_repo.buf))
die_errno(_("could not create leading directories of '%s'"),
sb_repo.buf);

@ -498,7 +498,7 @@ static int add_worktree(const char *path, const char *refname,
write_file(sb.buf, _("initializing"));

strbuf_addf(&sb_git, "%s/.git", path);
if (safe_create_leading_directories_const(sb_git.buf))
if (safe_create_leading_directories_const(the_repository, sb_git.buf))
die_errno(_("could not create leading directories of '%s'"),
sb_git.buf);
junk_work_tree = xstrdup(path);

2
commit-graph.c
View File

@ -2065,7 +2065,7 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
ctx->graph_name = get_commit_graph_filename(ctx->odb);
}

if (safe_create_leading_directories(ctx->graph_name)) {
if (safe_create_leading_directories(the_repository, ctx->graph_name)) {
error(_("unable to create leading directories of %s"),
ctx->graph_name);
return -1;

5
dir.c
View File

@ -17,7 +17,6 @@
#include "environment.h"
#include "gettext.h"
#include "name-hash.h"
#include "object-file.h"
#include "object-store-ll.h"
#include "path.h"
#include "refs.h"
@ -4063,12 +4062,12 @@ void connect_work_tree_and_git_dir(const char *work_tree_,

/* Prepare .git file */
strbuf_addf(&gitfile_sb, "%s/.git", work_tree_);
if (safe_create_leading_directories_const(gitfile_sb.buf))
if (safe_create_leading_directories_const(the_repository, gitfile_sb.buf))
die(_("could not create directories for %s"), gitfile_sb.buf);

/* Prepare config file */
strbuf_addf(&cfg_sb, "%s/config", git_dir_);
if (safe_create_leading_directories_const(cfg_sb.buf))
if (safe_create_leading_directories_const(the_repository, cfg_sb.buf))
die(_("could not create directories for %s"), cfg_sb.buf);

git_dir = real_pathdup(git_dir_, 1);

4
merge-recursive.c
View File

@ -910,7 +910,7 @@ static int make_room_for_path(struct merge_options *opt, const char *path)
}

/* Make sure leading directories are created */
status = safe_create_leading_directories_const(path);
status = safe_create_leading_directories_const(the_repository, path);
if (status) {
if (status == SCLD_EXISTS)
/* something else exists */
@ -1003,7 +1003,7 @@ static int update_file_flags(struct merge_options *opt,
close(fd);
} else if (S_ISLNK(contents->mode)) {
char *lnk = xmemdupz(buf, size);
safe_create_leading_directories_const(path);
safe_create_leading_directories_const(the_repository, path);
unlink(path);
if (symlink(lnk, path))
ret = err(opt, _("failed to symlink '%s': %s"),

2
midx-write.c
View File

@ -1086,7 +1086,7 @@ static int write_midx_internal(struct repository *r, const char *object_dir,
object_dir);
else
get_midx_filename(r->hash_algo, &midx_name, object_dir);
if (safe_create_leading_directories(midx_name.buf))
if (safe_create_leading_directories(r, midx_name.buf))
die_errno(_("unable to create leading directories of %s"),
midx_name.buf);


4
notes-merge.c
View File

@ -296,7 +296,7 @@ static void check_notes_merge_worktree(struct notes_merge_options *o)
"(%s exists)."), repo_git_path_replace(the_repository, &buf, "NOTES_MERGE_*"));
}

if (safe_create_leading_directories_const(repo_git_path_replace(the_repository, &buf,
if (safe_create_leading_directories_const(the_repository, repo_git_path_replace(the_repository, &buf,
NOTES_MERGE_WORKTREE "/.test")))
die_errno("unable to create directory %s",
repo_git_path_replace(the_repository, &buf, NOTES_MERGE_WORKTREE));
@ -314,7 +314,7 @@ static void write_buf_to_worktree(const struct object_id *obj,
{
int fd;
char *path = repo_git_path(the_repository, NOTES_MERGE_WORKTREE "/%s", oid_to_hex(obj));
if (safe_create_leading_directories_const(path))
if (safe_create_leading_directories_const(the_repository, path))
die_errno("unable to create directory for '%s'", path);

fd = xopen(path, O_WRONLY | O_EXCL | O_CREAT, 0666);

81
object-file.c
View File

@ -90,83 +90,6 @@ static int get_conv_flags(unsigned flags)
return 0;
}

static enum scld_error safe_create_leading_directories_1(char *path, int share)
{
char *next_component = path + offset_1st_component(path);
enum scld_error ret = SCLD_OK;

while (ret == SCLD_OK && next_component) {
struct stat st;
char *slash = next_component, slash_character;

while (*slash && !is_dir_sep(*slash))
slash++;

if (!*slash)
break;

next_component = slash + 1;
while (is_dir_sep(*next_component))
next_component++;
if (!*next_component)
break;

slash_character = *slash;
*slash = '\0';
if (!stat(path, &st)) {
/* path exists */
if (!S_ISDIR(st.st_mode)) {
errno = ENOTDIR;
ret = SCLD_EXISTS;
}
} else if (mkdir(path, 0777)) {
if (errno == EEXIST &&
!stat(path, &st) && S_ISDIR(st.st_mode))
; /* somebody created it since we checked */
else if (errno == ENOENT)
/*
* Either mkdir() failed because
* somebody just pruned the containing
* directory, or stat() failed because
* the file that was in our way was
* just removed. Either way, inform
* the caller that it might be worth
* trying again:
*/
ret = SCLD_VANISHED;
else
ret = SCLD_FAILED;
} else if (share && adjust_shared_perm(the_repository, path)) {
ret = SCLD_PERMS;
}
*slash = slash_character;
}
return ret;
}

enum scld_error safe_create_leading_directories(char *path)
{
return safe_create_leading_directories_1(path, 1);
}

enum scld_error safe_create_leading_directories_no_share(char *path)
{
return safe_create_leading_directories_1(path, 0);
}

enum scld_error safe_create_leading_directories_const(const char *path)
{
int save_errno;
/* path points to cache entries, so xstrdup before messing with it */
char *buf = xstrdup(path);
enum scld_error result = safe_create_leading_directories(buf);

save_errno = errno;
free(buf);
errno = save_errno;
return result;
}

int odb_mkstemp(struct strbuf *temp_filename, const char *pattern)
{
int fd;
@ -183,7 +106,7 @@ int odb_mkstemp(struct strbuf *temp_filename, const char *pattern)
/* slow path */
/* some mkstemp implementations erase temp_filename on failure */
repo_git_path_replace(the_repository, temp_filename, "objects/%s", pattern);
safe_create_leading_directories(temp_filename->buf);
safe_create_leading_directories(the_repository, temp_filename->buf);
return xmkstemp_mode(temp_filename->buf, mode);
}

@ -196,7 +119,7 @@ int odb_pack_keep(const char *name)
return fd;

/* slow path */
safe_create_leading_directories_const(name);
safe_create_leading_directories_const(the_repository, name);
return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
}


33
object-file.h
View File

@ -21,39 +21,6 @@ extern int fetch_if_missing;
int index_fd(struct index_state *istate, struct object_id *oid, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags);
int index_path(struct index_state *istate, struct object_id *oid, const char *path, struct stat *st, unsigned flags);

/*
* Create the directory containing the named path, using care to be
* somewhat safe against races. Return one of the scld_error values to
* indicate success/failure. On error, set errno to describe the
* problem.
*
* SCLD_VANISHED indicates that one of the ancestor directories of the
* path existed at one point during the function call and then
* suddenly vanished, probably because another process pruned the
* directory while we were working. To be robust against this kind of
* race, callers might want to try invoking the function again when it
* returns SCLD_VANISHED.
*
* safe_create_leading_directories() temporarily changes path while it
* is working but restores it before returning.
* safe_create_leading_directories_const() doesn't modify path, even
* temporarily. Both these variants adjust the permissions of the
* created directories to honor core.sharedRepository, so they are best
* suited for files inside the git dir. For working tree files, use
* safe_create_leading_directories_no_share() instead, as it ignores
* the core.sharedRepository setting.
*/
enum scld_error {
SCLD_OK = 0,
SCLD_FAILED = -1,
SCLD_PERMS = -2,
SCLD_EXISTS = -3,
SCLD_VANISHED = -4
};
enum scld_error safe_create_leading_directories(char *path);
enum scld_error safe_create_leading_directories_const(const char *path);
enum scld_error safe_create_leading_directories_no_share(char *path);

int git_open_cloexec(const char *name, int flags);
#define git_open(name) git_open_cloexec(name, O_RDONLY)


80
path.c
View File

@ -931,6 +931,86 @@ int safe_create_dir_in_gitdir(struct repository *repo, const char *path)
return adjust_shared_perm(repo, path);
}

static enum scld_error safe_create_leading_directories_1(struct repository *repo,
char *path)
{
char *next_component = path + offset_1st_component(path);
enum scld_error ret = SCLD_OK;

while (ret == SCLD_OK && next_component) {
struct stat st;
char *slash = next_component, slash_character;

while (*slash && !is_dir_sep(*slash))
slash++;

if (!*slash)
break;

next_component = slash + 1;
while (is_dir_sep(*next_component))
next_component++;
if (!*next_component)
break;

slash_character = *slash;
*slash = '\0';
if (!stat(path, &st)) {
/* path exists */
if (!S_ISDIR(st.st_mode)) {
errno = ENOTDIR;
ret = SCLD_EXISTS;
}
} else if (mkdir(path, 0777)) {
if (errno == EEXIST &&
!stat(path, &st) && S_ISDIR(st.st_mode))
; /* somebody created it since we checked */
else if (errno == ENOENT)
/*
* Either mkdir() failed because
* somebody just pruned the containing
* directory, or stat() failed because
* the file that was in our way was
* just removed. Either way, inform
* the caller that it might be worth
* trying again:
*/
ret = SCLD_VANISHED;
else
ret = SCLD_FAILED;
} else if (repo && adjust_shared_perm(repo, path)) {
ret = SCLD_PERMS;
}
*slash = slash_character;
}
return ret;
}

enum scld_error safe_create_leading_directories(struct repository *repo,
char *path)
{
return safe_create_leading_directories_1(repo, path);
}

enum scld_error safe_create_leading_directories_no_share(char *path)
{
return safe_create_leading_directories_1(NULL, path);
}

enum scld_error safe_create_leading_directories_const(struct repository *repo,
const char *path)
{
int save_errno;
/* path points to cache entries, so xstrdup before messing with it */
char *buf = xstrdup(path);
enum scld_error result = safe_create_leading_directories(repo, buf);

save_errno = errno;
free(buf);
errno = save_errno;
return result;
}

static int have_same_root(const char *path1, const char *path2)
{
int is_abs1, is_abs2;

34
path.h
View File

@ -232,6 +232,40 @@ void safe_create_dir(struct repository *repo, const char *dir, int share);
*/
int safe_create_dir_in_gitdir(struct repository *repo, const char *path);

/*
* Create the directory containing the named path, using care to be
* somewhat safe against races. Return one of the scld_error values to
* indicate success/failure. On error, set errno to describe the
* problem.
*
* SCLD_VANISHED indicates that one of the ancestor directories of the
* path existed at one point during the function call and then
* suddenly vanished, probably because another process pruned the
* directory while we were working. To be robust against this kind of
* race, callers might want to try invoking the function again when it
* returns SCLD_VANISHED.
*
* safe_create_leading_directories() temporarily changes path while it
* is working but restores it before returning.
* safe_create_leading_directories_const() doesn't modify path, even
* temporarily. Both these variants adjust the permissions of the
* created directories to honor core.sharedRepository, so they are best
* suited for files inside the git dir. For working tree files, use
* safe_create_leading_directories_no_share() instead, as it ignores
* the core.sharedRepository setting.
*/
enum scld_error {
SCLD_OK = 0,
SCLD_FAILED = -1,
SCLD_PERMS = -2,
SCLD_EXISTS = -3,
SCLD_VANISHED = -4
};
enum scld_error safe_create_leading_directories(struct repository *repo, char *path);
enum scld_error safe_create_leading_directories_const(struct repository *repo,
const char *path);
enum scld_error safe_create_leading_directories_no_share(char *path);

# ifdef USE_THE_REPOSITORY_VARIABLE
# include "strbuf.h"
# include "repository.h"

4
refs/files-backend.c
View File

@ -705,7 +705,7 @@ static int lock_raw_ref(struct files_ref_store *refs,
files_ref_path(refs, &ref_file, refname);

retry:
switch (safe_create_leading_directories(ref_file.buf)) {
switch (safe_create_leading_directories(the_repository, ref_file.buf)) {
case SCLD_OK:
break; /* success */
case SCLD_EXISTS:
@ -1109,7 +1109,7 @@ retry_fn:
strbuf_addstr(&path_copy, path);

do {
scld_result = safe_create_leading_directories(path_copy.buf);
scld_result = safe_create_leading_directories(the_repository, path_copy.buf);
if (scld_result == SCLD_OK)
goto retry_fn;
} while (scld_result == SCLD_VANISHED && create_directories_remaining-- > 0);

4
sequencer.c
View File

@ -4411,7 +4411,7 @@ static int write_update_refs_state(struct string_list *refs_to_oids)
goto cleanup;
}

if (safe_create_leading_directories(path)) {
if (safe_create_leading_directories(the_repository, path)) {
result = error(_("unable to create leading directories of %s"),
path);
goto cleanup;
@ -4677,7 +4677,7 @@ static void create_autostash_internal(struct repository *r,
strbuf_add_unique_abbrev(&buf, &oid, DEFAULT_ABBREV);

if (path) {
if (safe_create_leading_directories_const(path))
if (safe_create_leading_directories_const(the_repository, path))
die(_("Could not create directory for '%s'"),
path);
write_file(path, "%s", oid_to_hex(&oid));

2
server-info.c
View File

@ -88,7 +88,7 @@ static int update_info_file(struct repository *r, char *path,
.old_sb = STRBUF_INIT
};

safe_create_leading_directories(path);
safe_create_leading_directories(r, path);
f = mks_tempfile_m(tmp, 0666);
if (!f)
goto out;

2
submodule.c
View File

@ -2384,7 +2384,7 @@ static void relocate_single_git_dir_into_superproject(const char *path,
if (validate_submodule_git_dir(new_gitdir.buf, sub->name) < 0)
die(_("refusing to move '%s' into an existing git dir"),
real_old_git_dir);
if (safe_create_leading_directories_const(new_gitdir.buf) < 0)
if (safe_create_leading_directories_const(the_repository, new_gitdir.buf) < 0)
die(_("could not create directory '%s'"), new_gitdir.buf);
real_new_git_dir = real_pathdup(new_gitdir.buf, 1);