Jonathan Nieder wrote:
> Junio C Hamano wrote:
>> In any case, instead of this:
>>
>> struct strbuf tc_err = STRBUF_INIT;
>> if (transaction_commit(&t, &tc_err)) {
>> strbuf_addf(err, "cannot fetch '%s': %s", remotename,
>> tc_err.buf);
>> strbuf_release(&tc_err);
>> return -1;
>> }
>>
>> you can use the four-line version you cited above, which might be an
>> improvement.
>
> Yes, that's the idea.
>
> I'll do the tc_err thing, since I'm not getting a clear feeling that
> I've offered enough motivation for the prefixf approach.
The tc_err approach looks like this.
Signed-off-by: Jonathan Nieder <[email protected]>
lockfile.c | 25 +++++++++++++++----------
1 file changed, 15 insertions(+), 10 deletions(-)
diff --git i/lockfile.c w/lockfile.c
index 8685c68..4e2dfa3 100644
--- i/lockfile.c
+++ w/lockfile.c
@@ -182,15 +182,16 @@ int hold_lock_file_for_update(struct lock_file *lk, const
char *path, int flags)
int hold_lock_file_for_append(struct lock_file *lk, const char *path,
int flags, struct strbuf *err)
{
- int fd, orig_fd;
+ struct strbuf tc_err = STRBUF_INIT;
+ int fd, orig_fd = -1;
assert(!(flags & LOCK_DIE_ON_ERROR));
- assert(err && !err->len);
+ assert(err);
fd = lock_file(lk, path, flags);
if (fd < 0) {
unable_to_lock_message(path, errno, err);
- return fd;
+ goto fail;
}
orig_fd = open(path, O_RDONLY);
@@ -198,18 +199,22 @@ int hold_lock_file_for_append(struct lock_file *lk, const
char *path,
if (errno != ENOENT) {
strbuf_addf(err, "cannot open '%s' for copying: %s",
path, strerror(errno));
- rollback_lock_file(lk);
- return -1;
+ goto fail;
}
- } else if (copy_fd(orig_fd, fd, err)) {
- strbuf_prefixf(err, "cannot copy '%s': ", path);
- close(orig_fd);
- rollback_lock_file(lk);
- return -1;
+ } else if (copy_fd(orig_fd, fd, &tc_err)) {
+ strbuf_addf(err, "cannot copy '%s': %s", path, tc_err.buf);
+ goto fail;
} else {
close(orig_fd);
}
+ strbuf_release(&tc_err);
return fd;
+fail:
+ if (orig_fd >= 0)
+ close(orig_fd);
+ rollback_lock_file(lk);
+ strbuf_release(&tc_err);
+ return -1;
}
FILE *fdopen_lock_file(struct lock_file *lk, const char *mode)
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