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builtin/apply: make create_one_file() return -1 on error

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To libify `git apply` functionality we have to signal errors to the
caller instead of exit()ing.

To do that in a compatible manner with the rest of the error handling
in "builtin/apply.c", create_one_file() should return -1 instead of
calling exit().

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder 2016-09-04 22:18:19 +02:00 committed by Junio C Hamano
parent 739d8a16b5
commit 603752a88d
1 changed files with 21 additions and 15 deletions
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28
builtin/apply.c
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@ -4198,8 +4198,12 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf,
* We optimistically assume that the directories exist,
* which is true 99% of the time anyway. If they don't,
* we create them and try again.
*
* Returns:
* -1 on error
* 0 otherwise
*/
static void create_one_file(struct apply_state *state,
static int create_one_file(struct apply_state *state,
char *path,
unsigned mode,
const char *buf,
@ -4208,22 +4212,22 @@ static void create_one_file(struct apply_state *state,
int res;
if (state->cached)
return;
return 0;
res = try_create_file(path, mode, buf, size);
if (res < 0)
exit(128);
return -1;
if (!res)
return;
return 0;
if (errno == ENOENT) {
if (safe_create_leading_directories(path))
return;
return 0;
res = try_create_file(path, mode, buf, size);
if (res < 0)
exit(128);
return -1;
if (!res)
return;
return 0;
}
if (errno == EEXIST || errno == EACCES) {
@ -4243,10 +4247,10 @@ static void create_one_file(struct apply_state *state,
mksnpath(newpath, sizeof(newpath), "%s~%u", path, nr);
res = try_create_file(newpath, mode, buf, size);
if (res < 0)
exit(128);
return -1;
if (!res) {
if (!rename(newpath, path))
return;
return 0;
unlink_or_warn(newpath);
break;
}
@ -4255,7 +4259,8 @@ static void create_one_file(struct apply_state *state,
++nr;
}
}
die_errno(_("unable to write file '%s' mode %o"), path, mode);
return error_errno(_("unable to write file '%s' mode %o"),
path, mode);
}
static int add_conflicted_stages_file(struct apply_state *state,
@ -4300,7 +4305,8 @@ static int create_file(struct apply_state *state, struct patch *patch)
if (!mode)
mode = S_IFREG | 0644;
create_one_file(state, path, mode, buf, size);
if (create_one_file(state, path, mode, buf, size))
return -1;
if (patch->conflicted_threeway)
return add_conflicted_stages_file(state, patch);