From: tboegi@web.de
To: git@vger.kernel.org
Cc: "Torsten Bögershausen" <tboegi@web.de>
Subject: [PATCH v7 10/10] ce_compare_data() did not respect conversion
Date: Mon, 25 Apr 2016 18:56:41 +0200 [thread overview]
Message-ID: <1461603401-30993-1-git-send-email-tboegi@web.de> (raw)
In-Reply-To: <xmqqegblor2l.fsf@gitster.mtv.corp.google.com>
From: Torsten Bögershausen <tboegi@web.de>
We define the working tree file is clean if either:
* the result of running convert_to_git() on the working tree
contents matches what is in the index (because that would mean
doing another "git add" on the path is a no-op); OR
* the result of running convert_to_working_tree() on the content
in the index matches what is in the working tree (because that
would mean doing another "git checkout -f" on the path is a
no-op).
Add an extra check in ce_compare_data() in read_cache.c.
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
---
read-cache.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++
t/t6038-merge-text-auto.sh | 14 +++++------
2 files changed, 68 insertions(+), 7 deletions(-)
diff --git a/read-cache.c b/read-cache.c
index a3ef967..48c4b31 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -156,17 +156,78 @@ void fill_stat_cache_info(struct cache_entry *ce, struct stat *st)
ce_mark_uptodate(ce);
}
+/*
+ * Compare the data in buf with the data in the file pointed by fd and
+ * return 0 if they are identical, and non-zero if they differ.
+ */
+static int compare_with_fd(const char *input, ssize_t len, int fd)
+{
+ for (;;) {
+ char buf[1024 * 16];
+ ssize_t chunk_len, read_len;
+
+ chunk_len = sizeof(buf) < len ? sizeof(buf) : len;
+ read_len = xread(fd, buf, chunk_len ? chunk_len : 1);
+
+ if (!read_len)
+ /* EOF on the working tree file */
+ return !len ? 0 : -1;
+
+ if (!len)
+ /* we expected there is nothing left */
+ return -1;
+
+ if (memcmp(buf, input, read_len))
+ return -1;
+ input += read_len;
+ len -= read_len;
+ }
+}
+
static int ce_compare_data(const struct cache_entry *ce, struct stat *st)
{
int match = -1;
int fd = open(ce->name, O_RDONLY);
+ /*
+ * Would another "git add" on the path change what is in the
+ * index for the path?
+ */
if (fd >= 0) {
unsigned char sha1[20];
if (!index_fd(sha1, fd, st, OBJ_BLOB, ce->name, 0))
match = hashcmp(sha1, ce->sha1);
/* index_fd() closed the file descriptor already */
}
+ if (!match)
+ return match;
+
+ /*
+ * Would another "git checkout -f" out of the index change
+ * what is in the working tree file?
+ */
+ fd = open(ce->name, O_RDONLY);
+ if (fd >= 0) {
+ enum object_type type;
+ unsigned long size_long;
+ void *data = read_sha1_file(ce->sha1, &type, &size_long);
+
+ if (type == OBJ_BLOB) {
+ struct strbuf worktree = STRBUF_INIT;
+ if (convert_to_working_tree(ce->name, data,
+ size_long,
+ &worktree)) {
+ size_t size;
+ free(data);
+ data = strbuf_detach(&worktree, &size);
+ size_long = size;
+ }
+ if (!compare_with_fd(data, size_long, fd))
+ match = 0;
+ }
+ free(data);
+ close(fd);
+ }
return match;
}
diff --git a/t/t6038-merge-text-auto.sh b/t/t6038-merge-text-auto.sh
index 0108ead..565daf3 100755
--- a/t/t6038-merge-text-auto.sh
+++ b/t/t6038-merge-text-auto.sh
@@ -108,9 +108,9 @@ test_expect_success 'Merge addition of text=auto' '
test_expect_success 'Detect CRLF/LF conflict after setting text=auto' '
echo "<<<<<<<" >expected &&
- echo first line | append_cr >>expected &&
- echo same line | append_cr >>expected &&
- echo ======= | append_cr >>expected &&
+ echo first line >>expected &&
+ echo same line >>expected &&
+ echo ======= >>expected &&
echo first line | append_cr >>expected &&
echo same line | append_cr >>expected &&
echo ">>>>>>>" >>expected &&
@@ -121,14 +121,13 @@ test_expect_success 'Detect CRLF/LF conflict after setting text=auto' '
fuzz_conflict file >file.fuzzy &&
compare_files expected file.fuzzy
'
-
test_expect_success 'Detect LF/CRLF conflict from addition of text=auto' '
echo "<<<<<<<" >expected &&
echo first line | append_cr >>expected &&
echo same line | append_cr >>expected &&
- echo ======= | append_cr >>expected &&
- echo first line | append_cr >>expected &&
- echo same line | append_cr >>expected &&
+ echo ======= >>expected &&
+ echo first line >>expected &&
+ echo same line >>expected &&
echo ">>>>>>>" >>expected &&
git config merge.renormalize false &&
rm -f .gitattributes &&
@@ -138,6 +137,7 @@ test_expect_success 'Detect LF/CRLF conflict from addition of text=auto' '
compare_files expected file.fuzzy
'
+
test_expect_failure 'checkout -m after setting text=auto' '
cat <<-\EOF >expected &&
first line
--
2.0.0.rc1.6318.g0c2c796
next prev parent reply other threads:[~2016-04-25 16:52 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Message-Id=xmqqio26nqk8.fsf@gitster.mtv.corp.google.com>
2016-02-11 16:16 ` [PATCH 1/3] git reset --hard gives clean working tree tboegi
2016-02-11 18:49 ` Junio C Hamano
2016-03-05 7:23 ` Torsten Bögershausen
2016-03-05 8:05 ` Junio C Hamano
2016-03-05 8:27 ` Torsten Bögershausen
2016-03-05 21:18 ` Junio C Hamano
2016-03-07 8:14 ` Junio C Hamano
2016-03-07 8:51 ` Junio C Hamano
2016-03-07 8:58 ` Torsten Bögershausen
2016-03-07 22:34 ` Junio C Hamano
2016-03-29 13:25 ` [PATCH v1 1/7] Make it possible to get sha1 for a path from the index tboegi
2016-03-29 13:28 ` Duy Nguyen
2016-03-29 13:31 ` Duy Nguyen
2016-03-29 15:05 ` Torsten Bögershausen
2016-03-29 19:32 ` Eric Sunshine
2016-03-29 13:25 ` [PATCH v1 2/7] convert.c: stream and early out tboegi
2016-03-29 13:25 ` [PATCH v1 3/7] Allow core.autocrlf=input and core.eol=crlf tboegi
2016-03-29 13:25 ` [PATCH v1 4/7] t0027: TC for combined attributes tboegi
2016-03-29 13:25 ` [PATCH v1 5/7] CRLF: unify the "auto" handling tboegi
2016-03-29 19:42 ` Eric Sunshine
2016-03-29 13:25 ` [PATCH v1 6/7] correct blame for files commited with CRLF tboegi
2016-03-29 17:21 ` Junio C Hamano
2016-03-29 19:51 ` Torsten Bögershausen
2016-03-29 19:58 ` Junio C Hamano
2016-03-29 20:25 ` Junio C Hamano
2016-03-29 20:32 ` Junio C Hamano
2016-03-29 20:50 ` Junio C Hamano
2016-03-30 17:48 ` Torsten Bögershausen
2016-03-29 13:25 ` [PATCH v1 7/7] convert.c: more safer crlf handling with text attribute tboegi
2016-03-29 18:37 ` Junio C Hamano
2016-04-01 16:08 ` [PATCH v2 1/7] Make it possible to get sha1 for a path from the index tboegi
2016-04-01 16:08 ` [PATCH v2 2/7] convert.c: stream and early out tboegi
2016-04-01 16:08 ` [PATCH v2 3/7] Allow core.autocrlf=input and core.eol=crlf tboegi
2016-04-01 22:20 ` Junio C Hamano
2016-04-01 16:08 ` [PATCH v2 4/7] t0027: TC for combined attributes tboegi
2016-04-01 22:22 ` Junio C Hamano
2016-04-01 16:08 ` [PATCH v2 5/7] CRLF: unify the "auto" handling tboegi
2016-04-01 22:25 ` Junio C Hamano
2016-04-01 16:08 ` [PATCH v2 6/7] correct blame for files commited with CRLF tboegi
2016-04-01 22:29 ` Junio C Hamano
2016-04-03 9:29 ` Torsten Bögershausen
2016-04-01 16:08 ` [PATCH v2 7/7] convert.c: more safer crlf handling with text attribute tboegi
2016-04-05 19:23 ` [PATCH v1] correct blame for files commited with CRLF tboegi
2016-04-05 20:57 ` Junio C Hamano
2016-04-05 21:12 ` Junio C Hamano
2016-04-06 4:17 ` Torsten Bögershausen
2016-04-19 13:24 ` [PATCH v5 1/4] t0027: Make more reliable tboegi
2016-04-19 13:26 ` [PATCH v5 2/4] convert: allow core.autocrlf=input and core.eol=crlf tboegi
2016-04-19 13:26 ` [PATCH v5 3/4] t0027: test cases for combined attributes tboegi
2016-04-19 21:32 ` Junio C Hamano
2016-04-20 15:52 ` Torsten Bögershausen
2016-04-19 13:26 ` [PATCH v5 4/4] convert.c: ident + core.autocrlf didn't work tboegi
2016-04-20 22:27 ` Junio C Hamano
2016-04-22 14:38 ` [PATCH v6 01/10] t0027: Make more reliable tboegi
2016-04-22 22:03 ` Junio C Hamano
2016-04-24 3:45 ` Torsten Bögershausen
2016-04-22 14:53 ` [PATCH v6 02/10] convert: allow core.autocrlf=input and core.eol=crlf tboegi
2016-04-22 14:53 ` [PATCH v6 03/10] t0027: test cases for combined attributes tboegi
2016-04-22 14:53 ` [PATCH v6 04/10] convert.c: ident + core.autocrlf didn't work tboegi
2016-04-22 14:53 ` [PATCH v6 05/10] read-cache: factor out get_sha1_from_index() helper tboegi
2016-04-22 14:53 ` [PATCH v6 06/10] convert.c: stream and early out tboegi
2016-04-22 14:53 ` [PATCH v6 07/10] convert: unify the "auto" handling of CRLF tboegi
2016-04-22 14:53 ` [PATCH v6 08/10] convert.c: more safer crlf handling with text attribute tboegi
2016-04-22 14:53 ` [PATCH v6 09/10] t6038; use crlf on all platforms tboegi
2016-04-22 14:53 ` [PATCH v6 10/10] ce_compare_data() did not respect conversion tboegi
2016-04-24 15:10 ` [PATCH v6b 01/10] t0027: Make commit_chk_wrnNNO() reliable tboegi
2016-04-24 15:11 ` [PATCH v6b 02/10] convert: allow core.autocrlf=input and core.eol=crlf tboegi
2016-04-24 15:11 ` [PATCH v6b 03/10] t0027: test cases for combined attributes tboegi
2016-04-24 15:11 ` [PATCH v6b 04/10] convert.c: ident + core.autocrlf didn't work tboegi
2016-04-24 15:11 ` [PATCH v6b 05/10] read-cache: factor out get_sha1_from_index() helper tboegi
2016-04-24 15:11 ` [PATCH v6b 06/10] convert.c: stream and early out tboegi
2016-04-24 15:11 ` [PATCH v6b 07/10] convert: unify the "auto" handling of CRLF tboegi
2016-04-24 15:11 ` [PATCH v6b 08/10] convert.c: more safer crlf handling with text attribute tboegi
2016-04-24 15:11 ` [PATCH v6b 09/10] t6038; use crlf on all platforms tboegi
2016-04-24 15:11 ` [PATCH v6b 10/10] ce_compare_data() did not respect conversion tboegi
2016-04-25 16:56 ` [PATCH v7 01/10] t0027: Make commit_chk_wrnNNO() reliable tboegi
2016-04-25 19:15 ` Junio C Hamano
2016-04-25 16:56 ` [PATCH v7 02/10] convert: allow core.autocrlf=input and core.eol=crlf tboegi
2016-04-25 16:56 ` [PATCH v7 03/10] t0027: test cases for combined attributes tboegi
2016-04-25 16:56 ` [PATCH v7 04/10] convert.c: ident + core.autocrlf didn't work tboegi
2016-04-25 16:56 ` [PATCH v7 05/10] read-cache: factor out get_sha1_from_index() helper tboegi
2016-04-25 16:56 ` [PATCH v7 06/10] convert.c: stream and early out tboegi
2016-04-25 16:56 ` [PATCH v7 07/10] convert: unify the "auto" handling of CRLF tboegi
2016-04-25 19:37 ` Junio C Hamano
2016-04-26 16:33 ` Torsten Bögershausen
2016-04-26 17:42 ` Junio C Hamano
2016-04-25 16:56 ` [PATCH v7 08/10] convert.c: more safer crlf handling with text attribute tboegi
2016-04-25 16:56 ` [PATCH v7 09/10] t6038; use crlf on all platforms tboegi
2016-04-25 16:56 ` tboegi [this message]
2016-04-29 15:01 ` [PATCH v8 01/10] t0027: make commit_chk_wrnNNO() reliable tboegi
2016-04-29 15:01 ` [PATCH v8 02/10] convert: allow core.autocrlf=input and core.eol=crlf tboegi
2016-04-29 15:01 ` [PATCH v8 03/10] t0027: test cases for combined attributes tboegi
2016-04-29 15:01 ` [PATCH v8 04/10] convert.c: ident + core.autocrlf didn't work tboegi
2016-04-29 15:02 ` [PATCH v8 05/10] read-cache: factor out get_sha1_from_index() helper tboegi
2016-04-29 15:02 ` [PATCH v8 06/10] convert.c: stream and early out tboegi
2016-04-29 15:02 ` [PATCH v8 07/10] convert: unify the "auto" handling of CRLF tboegi
2016-11-25 15:48 ` Torsten Bögershausen
2016-11-27 16:22 ` [PATCH/RFC v1 1/1] New way to normalize the line endings tboegi
2016-11-29 19:15 ` Junio C Hamano
2017-04-12 11:48 ` [PATCH v2 1/1] Document how " tboegi
2016-04-29 15:02 ` [PATCH v8 08/10] convert.c: more safer crlf handling with text attribute tboegi
2016-04-29 15:02 ` [PATCH v8 09/10] t6038; use crlf on all platforms tboegi
2016-04-29 15:02 ` [PATCH v8 10/10] ce_compare_data() did not respect conversion tboegi
2016-04-29 18:20 ` Junio C Hamano
2016-04-29 21:09 ` Junio C Hamano
2016-05-01 16:27 ` Torsten Bögershausen
2016-05-02 18:16 ` Junio C Hamano
2016-05-02 19:33 ` Junio C Hamano
2016-05-03 16:02 ` Torsten Bögershausen
2016-05-03 18:31 ` Junio C Hamano
2016-05-04 4:07 ` Torsten Bögershausen
2016-05-04 7:23 ` Junio C Hamano
2016-05-06 8:54 ` Torsten Bögershausen
2016-05-06 17:11 ` Junio C Hamano
2016-05-07 6:10 ` [PATCH v9 0/6] convert-eol-autocrlf, old 5..10 now 1..6 tboegi
2016-05-07 6:10 ` [PATCH v9 1/6] read-cache: factor out get_sha1_from_index() helper tboegi
2016-05-09 19:54 ` Junio C Hamano
2016-05-07 6:11 ` [PATCH v9 2/6] convert.c: stream and early out tboegi
2016-05-09 20:29 ` Junio C Hamano
2016-05-11 4:30 ` Torsten Bögershausen
2016-05-07 6:11 ` [PATCH v9 3/6] convert: unify the "auto" handling of CRLF tboegi
2016-05-07 6:11 ` [PATCH v9 4/6] convert.c: more safer crlf handling with text attribute tboegi
2016-05-07 6:11 ` [PATCH v9 5/6] t6038; use crlf on all platforms tboegi
2016-05-07 6:11 ` [PATCH v9 6/6] convert: ce_compare_data() checks for a sha1 of a path tboegi
2016-02-11 16:16 ` [PATCH 2/3] Factor out convert_cmp_checkout() into convert.c tboegi
2016-02-11 16:16 ` [PATCH 3/3] convert.c: Optimize convert_cmp_checkout() for changed file len tboegi
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