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fast-import: do not truncate exported marks file

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Certain lines of the marks file might be corrupted (or the objects
missing due to a garbage collection), but that's no reason to truncate
the file and essentially destroy the rest of it.

Ideally missing objects should not cause a crash, we could just skip
them, but that's another patch.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Felipe Contreras
2016-05-17 16:40:23 -05:00
committed by Junio C Hamano
parent d92347f59f
commit f4beed60d5
2 changed files with 20 additions and 2 deletions
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7
fast-import.c
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@ -329,6 +329,7 @@ static const char *export_marks_file;
static const char *import_marks_file;
static int import_marks_file_from_stream;
static int import_marks_file_ignore_missing;
static int import_marks_file_done;
static int relative_marks_paths;
/* Our last blob */
@ -1802,7 +1803,7 @@ static void dump_marks(void)
static struct lock_file mark_lock;
FILE *f;
if (!export_marks_file)
if (!export_marks_file || (import_marks_file && !import_marks_file_done))
return;
if (hold_lock_file_for_update(&mark_lock, export_marks_file, 0) < 0) {
@ -1835,7 +1836,7 @@ static void read_marks(void)
if (f)
;
else if (import_marks_file_ignore_missing && errno == ENOENT)
return; /* Marks file does not exist */
goto done; /* Marks file does not exist */
else
die_errno("cannot read '%s'", import_marks_file);
while (fgets(line, sizeof(line), f)) {
@ -1865,6 +1866,8 @@ static void read_marks(void)
insert_mark(mark, e);
}
fclose(f);
done:
import_marks_file_done = 1;
}