To libify `git apply` functionality we have to signal errors to the
caller instead of die()ing.
To do that in a compatible manner with the rest of the error handling
in "builtin/apply.c", try_create_file() should return -1 in case of
error.
Unfortunately try_create_file() currently returns -1 to signal a
recoverable error. To fix that, let's make it return 1 in case of
a recoverable error and -1 in case of an unrecoverable error.
Helped-by: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>
Helped-by: Jeff King <peff@xxxxxxxx>
Signed-off-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
---
builtin/apply.c | 44 +++++++++++++++++++++++++++++++++-----------
1 file changed, 33 insertions(+), 11 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c
index c787ead..9372999 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -4150,38 +4150,48 @@ static int add_index_file(struct apply_state *state,
return 0;
}
+/*
+ * Returns:
+ * -1 if an unrecoverable error happened
+ * 0 if everything went well
+ * 1 if a recoverable error happened
+ */
static int try_create_file(const char *path, unsigned int mode, const char *buf, unsigned long size)
{
- int fd;
+ int fd, res;
struct strbuf nbuf = STRBUF_INIT;
if (S_ISGITLINK(mode)) {
struct stat st;
if (!lstat(path, &st) && S_ISDIR(st.st_mode))
return 0;
- return mkdir(path, 0777);
+ return !!mkdir(path, 0777);
}
if (has_symlinks && S_ISLNK(mode))
/* Although buf:size is counted string, it also is NUL
* terminated.
*/
- return symlink(buf, path);
+ return !!symlink(buf, path);
fd = open(path, O_CREAT | O_EXCL | O_WRONLY, (mode & 0100) ? 0777 : 0666);
if (fd < 0)
- return -1;
+ return 1;
if (convert_to_working_tree(path, buf, size, &nbuf)) {
size = nbuf.len;
buf = nbuf.buf;
}
- write_or_die(fd, buf, size);
+
+ res = write_in_full(fd, buf, size) < 0;
+ if (res)
+ error_errno(_("failed to write to '%s'"), path);
strbuf_release(&nbuf);
- if (close(fd) < 0)
- die_errno(_("closing file '%s'"), path);
- return 0;
+ if (close(fd) < 0 && !res)
+ return error(_("closing file '%s': %s"), path, strerror(errno));
+
+ return res ? -1 : 0;
}
/*
@@ -4195,15 +4205,24 @@ static void create_one_file(struct apply_state *state,
const char *buf,
unsigned long size)
{
+ int res;
+
if (state->cached)
return;
- if (!try_create_file(path, mode, buf, size))
+
+ res = try_create_file(path, mode, buf, size);
+ if (res < 0)
+ exit(128);
+ if (!res)
return;
if (errno == ENOENT) {
if (safe_create_leading_directories(path))
return;
- if (!try_create_file(path, mode, buf, size))
+ res = try_create_file(path, mode, buf, size);
+ if (res < 0)
+ exit(128);
+ if (!res)
return;
}
@@ -4222,7 +4241,10 @@ static void create_one_file(struct apply_state *state,
for (;;) {
char newpath[PATH_MAX];
mksnpath(newpath, sizeof(newpath), "%s~%u", path, nr);
- if (!try_create_file(newpath, mode, buf, size)) {
+ res = try_create_file(newpath, mode, buf, size);
+ if (res < 0)
+ exit(128);
+ if (!res) {
if (!rename(newpath, path))
return;
unlink_or_warn(newpath);
--
2.9.2.614.g4980f51
--
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