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preserve mtime of local clone

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A local clone without hardlinks copies all objects, including dangling
ones, to the new repository. Since the mtimes are renewed, those
dangling objects cannot be pruned by "git gc --prune", even if they
would have been old enough for pruning in the original repository.

Instead, preserve mtime during copy. "git gc --prune" will then work
in the clone just like it did in the original.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Clemens Buchacher 2009-09-12 11:03:48 +02:00 committed by Junio C Hamano
parent 41698375ad
commit f7835a251c
3 changed files with 23 additions and 1 deletions
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2
builtin-clone.c
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@ -269,7 +269,7 @@ static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest)
die_errno("failed to create link '%s'", dest->buf);
option_no_hardlinks = 1;
}
if (copy_file(dest->buf, src->buf, 0666))
if (copy_file_with_time(dest->buf, src->buf, 0666))
die_errno("failed to copy file to '%s'", dest->buf);
}
closedir(dir);

1
cache.h
View File

@ -923,6 +923,7 @@ extern const char *git_mailmap_file;
extern void maybe_flush_or_die(FILE *, const char *);
extern int copy_fd(int ifd, int ofd);
extern int copy_file(const char *dst, const char *src, int mode);
extern int copy_file_with_time(const char *dst, const char *src, int mode);
extern void write_or_die(int fd, const void *buf, size_t count);
extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);

21
copy.c
View File

@ -35,6 +35,19 @@ int copy_fd(int ifd, int ofd)
return 0;
}
static int copy_times(const char *dst, const char *src)
{
struct stat st;
struct utimbuf times;
if (stat(src, &st) < 0)
return -1;
times.actime = st.st_atime;
times.modtime = st.st_mtime;
if (utime(dst, &times) < 0)
return -1;
return 0;
}
int copy_file(const char *dst, const char *src, int mode)
{
int fdi, fdo, status;
@ -55,3 +68,11 @@ int copy_file(const char *dst, const char *src, int mode)
return status;
}
int copy_file_with_time(const char *dst, const char *src, int mode)
{
int status = copy_file(dst, src, mode);
if (!status)
return copy_times(dst, src);
return status;
}