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builtin-bundle create - use lock_file

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"git bundle create" left an invalid, partially written bundle if
an error occured during creation.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2007-08-12 10:44:06 -07:00
parent 95eb6853af
commit 4b37666ccb
1 changed files with 10 additions and 8 deletions
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18
builtin-bundle.c
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@ -189,7 +189,9 @@ static int list_heads(struct bundle_header *header, int argc, const char **argv)
static int create_bundle(struct bundle_header *header, const char *path,
int argc, const char **argv)
{
static struct lock_file lock;
int bundle_fd = -1;
int bundle_to_stdout;
const char **argv_boundary = xmalloc((argc + 4) * sizeof(const char *));
const char **argv_pack = xmalloc(5 * sizeof(const char *));
int i, ref_count = 0;
@ -198,14 +200,11 @@ static int create_bundle(struct bundle_header *header, const char *path,
struct child_process rls;
FILE *rls_fout;
/*
* NEEDSWORK: this should use something like lock-file
* to create temporary that is cleaned up upon error.
*/
bundle_fd = (!strcmp(path, "-") ? 1 :
open(path, O_CREAT | O_EXCL | O_WRONLY, 0666));
if (bundle_fd < 0)
return error("Could not create '%s': %s", path, strerror(errno));
bundle_to_stdout = !strcmp(path, "-");
if (bundle_to_stdout)
bundle_fd = 1;
else
bundle_fd = hold_lock_file_for_update(&lock, path, 1);
/* write signature */
write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
@ -341,6 +340,9 @@ static int create_bundle(struct bundle_header *header, const char *path,
}
if (finish_command(&rls))
return error ("pack-objects died");
close(bundle_fd);
if (!bundle_to_stdout)
commit_lock_file(&lock);
return 0;
}