diff options
| author | Michael Haggerty <mhagger@alum.mit.edu> | 2014-10-01 14:28:36 +0400 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2014-10-02 00:52:06 +0400 |
| commit | 751bacedaa507b7b6d10b2c1f48e019a01a8fa6e (patch) | |
| tree | c93a688ada9b9139a4aa661273d5867eab6e74aa /lockfile.c | |
| parent | 0c0d6e8601a1cfb8ebbdadb6a25a9f6fadc91359 (diff) | |
commit_lock_file_to(): refactor a helper out of commit_lock_file()
commit_locked_index(), when writing to an alternate index file,
duplicates (poorly) the code in commit_lock_file(). And anyway, it
shouldn't have to know so much about the internal workings of lockfile
objects. So extract a new function commit_lock_file_to() that does the
work common to the two functions, and call it from both
commit_lock_file() and commit_locked_index().
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'lockfile.c')
| -rw-r--r-- | lockfile.c | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/lockfile.c b/lockfile.c index 56ad7e8a6e..cf7f4d0470 100644 --- a/lockfile.c +++ b/lockfile.c @@ -43,9 +43,9 @@ * Same as the previous state, except that the lockfile is closed * and fd is -1. * - * - Unlocked (after commit_lock_file(), rollback_lock_file(), a - * failed attempt to lock, or a failed close_lock_file()). In this - * state: + * - Unlocked (after commit_lock_file(), commit_lock_file_to(), + * rollback_lock_file(), a failed attempt to lock, or a failed + * close_lock_file()). In this state: * - active is unset * - filename is empty (usually, though there are transitory * states in which this condition doesn't hold). Client code should @@ -284,23 +284,15 @@ int reopen_lock_file(struct lock_file *lk) return lk->fd; } -int commit_lock_file(struct lock_file *lk) +int commit_lock_file_to(struct lock_file *lk, const char *path) { - static struct strbuf result_file = STRBUF_INIT; - int err; - if (!lk->active) - die("BUG: attempt to commit unlocked object"); + die("BUG: attempt to commit unlocked object to \"%s\"", path); if (close_lock_file(lk)) return -1; - /* remove ".lock": */ - strbuf_add(&result_file, lk->filename.buf, - lk->filename.len - LOCK_SUFFIX_LEN); - err = rename(lk->filename.buf, result_file.buf); - strbuf_reset(&result_file); - if (err) { + if (rename(lk->filename.buf, path)) { int save_errno = errno; rollback_lock_file(lk); errno = save_errno; @@ -312,6 +304,26 @@ int commit_lock_file(struct lock_file *lk) return 0; } +int commit_lock_file(struct lock_file *lk) +{ + static struct strbuf result_file = STRBUF_INIT; + int err; + + if (!lk->active) + die("BUG: attempt to commit unlocked object"); + + if (lk->filename.len <= LOCK_SUFFIX_LEN || + strcmp(lk->filename.buf + lk->filename.len - LOCK_SUFFIX_LEN, LOCK_SUFFIX)) + die("BUG: lockfile filename corrupt"); + + /* remove ".lock": */ + strbuf_add(&result_file, lk->filename.buf, + lk->filename.len - LOCK_SUFFIX_LEN); + err = commit_lock_file_to(lk, result_file.buf); + strbuf_reset(&result_file); + return err; +} + int hold_locked_index(struct lock_file *lk, int die_on_error) { return hold_lock_file_for_update(lk, get_index_file(), |