From: Christian Couder <christian.couder@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Karsten Blees" <karsten.blees@gmail.com>,
"Nguyen Thai Ngoc Duy" <pclouds@gmail.com>,
"Stefan Beller" <sbeller@google.com>,
"Eric Sunshine" <sunshine@sunshineco.com>,
"Ramsay Jones" <ramsay@ramsayjones.plus.com>,
"Johannes Sixt" <j6t@kdbg.org>, "René Scharfe" <l.s.r@web.de>,
"Stefan Naewe" <stefan.naewe@atlas-elektronik.com>,
"Christian Couder" <chriscool@tuxfamily.org>
Subject: [PATCH v14 26/41] builtin/apply: make try_create_file() return -1 on error
Date: Sun, 4 Sep 2016 22:18:18 +0200 [thread overview]
Message-ID: <20160904201833.21676-27-chriscool@tuxfamily.org> (raw)
In-Reply-To: <20160904201833.21676-1-chriscool@tuxfamily.org>
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@sunshineco.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
builtin/apply.c | 44 +++++++++++++++++++++++++++++++++-----------
1 file changed, 33 insertions(+), 11 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c
index c787ead..3145e03 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_errno(_("closing file '%s'"), path);
+
+ 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);
--
2.10.0.41.g9df52c3
next prev parent reply other threads:[~2016-09-04 20:20 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-04 20:17 [PATCH v14 00/41] libify apply and use lib in am, part 2 Christian Couder
2016-09-04 20:17 ` [PATCH v14 01/41] apply: make some names more specific Christian Couder
2016-09-04 20:17 ` [PATCH v14 02/41] apply: move 'struct apply_state' to apply.h Christian Couder
2016-09-04 20:17 ` [PATCH v14 03/41] builtin/apply: make apply_patch() return -1 or -128 instead of die()ing Christian Couder
2016-09-04 20:17 ` [PATCH v14 04/41] builtin/apply: read_patch_file() return -1 " Christian Couder
2016-09-04 20:17 ` [PATCH v14 05/41] builtin/apply: make find_header() return -128 " Christian Couder
2016-09-04 20:17 ` [PATCH v14 06/41] builtin/apply: make parse_chunk() return a negative integer on error Christian Couder
2016-09-04 20:17 ` [PATCH v14 07/41] builtin/apply: make parse_single_patch() return -1 " Christian Couder
2016-09-04 20:18 ` [PATCH v14 08/41] builtin/apply: make parse_whitespace_option() return -1 instead of die()ing Christian Couder
2016-09-04 20:18 ` [PATCH v14 09/41] builtin/apply: make parse_ignorewhitespace_option() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 10/41] builtin/apply: move init_apply_state() to apply.c Christian Couder
2016-09-04 20:18 ` [PATCH v14 11/41] apply: make init_apply_state() return -1 instead of exit()ing Christian Couder
2016-09-04 20:18 ` [PATCH v14 12/41] builtin/apply: make check_apply_state() return -1 instead of die()ing Christian Couder
2016-09-04 20:18 ` [PATCH v14 13/41] builtin/apply: move check_apply_state() to apply.c Christian Couder
2016-09-04 20:18 ` [PATCH v14 14/41] builtin/apply: make apply_all_patches() return 128 or 1 on error Christian Couder
2016-09-04 20:18 ` [PATCH v14 15/41] builtin/apply: make parse_traditional_patch() return -1 " Christian Couder
2016-09-04 20:18 ` [PATCH v14 16/41] builtin/apply: make gitdiff_*() return 1 at end of header Christian Couder
2016-09-04 20:18 ` [PATCH v14 17/41] builtin/apply: make gitdiff_*() return -1 on error Christian Couder
2016-09-04 20:18 ` [PATCH v14 18/41] builtin/apply: change die_on_unsafe_path() to check_unsafe_path() Christian Couder
2016-09-04 20:18 ` [PATCH v14 19/41] builtin/apply: make build_fake_ancestor() return -1 on error Christian Couder
2016-09-04 20:18 ` [PATCH v14 20/41] builtin/apply: make remove_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 21/41] builtin/apply: make add_conflicted_stages_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 22/41] builtin/apply: make add_index_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 23/41] builtin/apply: make create_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 24/41] builtin/apply: make write_out_one_result() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 25/41] builtin/apply: make write_out_results() " Christian Couder
2016-09-04 20:18 ` Christian Couder [this message]
2016-09-04 20:18 ` [PATCH v14 27/41] builtin/apply: make create_one_file() " Christian Couder
2016-09-04 20:18 ` [PATCH v14 28/41] builtin/apply: rename option parsing functions Christian Couder
2016-09-04 20:18 ` [PATCH v14 29/41] apply: rename and move opt constants to apply.h Christian Couder
2016-09-04 20:18 ` [PATCH v14 31/41] apply: make some parsing functions static again Christian Couder
2016-09-04 20:18 ` [PATCH v14 32/41] apply: use error_errno() where possible Christian Couder
2016-09-04 20:18 ` [PATCH v14 33/41] apply: make it possible to silently apply Christian Couder
2016-09-04 20:18 ` [PATCH v14 34/41] apply: don't print on stdout in verbosity_silent mode Christian Couder
2016-09-04 20:18 ` [PATCH v14 35/41] usage: add set_warn_routine() Christian Couder
2016-09-04 20:18 ` [PATCH v14 36/41] usage: add get_error_routine() and get_warn_routine() Christian Couder
2016-09-04 20:18 ` [PATCH v14 37/41] apply: change error_routine when silent Christian Couder
2016-09-04 20:18 ` [PATCH v14 38/41] apply: refactor `git apply` option parsing Christian Couder
2016-09-04 20:18 ` [PATCH v14 39/41] apply: pass apply state to build_fake_ancestor() Christian Couder
2016-09-04 20:18 ` [PATCH v14 40/41] apply: learn to use a different index file Christian Couder
2016-09-04 20:18 ` [PATCH v14 41/41] builtin/am: use apply API in run_apply() Christian Couder
[not found] ` <20160904201833.21676-31-chriscool@tuxfamily.org>
2016-09-06 18:29 ` [PATCH v14 30/41] Move libified code from builtin/apply.c to apply.{c,h} Stefan Beller
2016-09-06 18:54 ` [PATCH v14 00/41] libify apply and use lib in am, part 2 Stefan Beller
2016-09-07 19:51 ` Junio C Hamano
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