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get_locked_file_path(): new function

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Add a function to return the path of the file that is locked by a
lock_file object. This reduces the knowledge that callers have to have
about the lock_file layout.

Suggested-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty 2014-10-01 12:28:39 +02:00 committed by Junio C Hamano
parent 316683bd37
commit ec38b4e482
4 changed files with 16 additions and 3 deletions
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5
Documentation/technical/api-lockfile.txt
View File

@ -143,6 +143,11 @@ hold_lock_file_for_append::
the existing contents of the file (if any) to the lockfile and
position its write pointer at the end of the file.
get_locked_file_path::
Return the path of the file that is locked by the specified
lock_file object. The caller must free the memory.
commit_lock_file::
Take a pointer to the `struct lock_file` initialized with an

1
cache.h
View File

@ -590,6 +590,7 @@ extern void unable_to_lock_message(const char *path, int err,
extern NORETURN void unable_to_lock_die(const char *path, int err);
extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
extern char *get_locked_file_path(struct lock_file *);
extern int commit_lock_file_to(struct lock_file *, const char *path);
extern int commit_lock_file(struct lock_file *);
extern int reopen_lock_file(struct lock_file *);

9
lockfile.c
View File

@ -257,6 +257,15 @@ int hold_lock_file_for_append(struct lock_file *lk, const char *path, int flags)
return fd;
}
char *get_locked_file_path(struct lock_file *lk)
{
if (!lk->active)
die("BUG: get_locked_file_path() called for unlocked object");
if (lk->filename.len <= LOCK_SUFFIX_LEN)
die("BUG: get_locked_file_path() called for malformed lock object");
return xmemdupz(lk->filename.buf, lk->filename.len - LOCK_SUFFIX_LEN);
}
int close_lock_file(struct lock_file *lk)
{
int fd = lk->fd;

4
refs.c
View File

@ -2606,9 +2606,7 @@ static int delete_ref_loose(struct ref_lock *lock, int flag)
* loose. The loose file name is the same as the
* lockfile name, minus ".lock":
*/
char *loose_filename = xmemdupz(
lock->lk->filename.buf,
lock->lk->filename.len - LOCK_SUFFIX_LEN);
char *loose_filename = get_locked_file_path(lock->lk);
int err = unlink_or_warn(loose_filename);
free(loose_filename);
if (err && errno != ENOENT)