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authorLinus Torvalds <torvalds@linux-foundation.org>2007-05-26 16:25:31 (GMT)
committerJunio C Hamano <junkio@cox.net>2007-05-27 03:00:55 (GMT)
commit99b5a79e1329468bee26ae3bd9070c47418279d0 (patch)
treef29c58779b93577898284d6e066eed244911f522 /builtin-pack-refs.c
parentc56ed464b0ba275d9f2e3598c61b391e98fc217b (diff)
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Make the pack-refs interfaces usable from outside
This just basically creates a "pack_refs()" function that could be used by anybody. You pass it in the flags you want as a bitmask (PACK_REFS_ALL and PACK_REFS_PRUNE), and it will do all the heavy lifting. Of course, it's still static, and it's all in the builtin-pack-refs.c file, so it's not actually visible to the outside, but the next step would be to just move it all to a library file (probably refs.c) and expose it. Then we could easily make "git gc" do this too. While I did it, I also made it check the return value of the fflush and fsync stage, to make sure that we don't overwrite the old packed-refs file with something that got truncated due to write errors! Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'builtin-pack-refs.c')
-rw-r--r--builtin-pack-refs.c66
1 files changed, 38 insertions, 28 deletions
diff --git a/builtin-pack-refs.c b/builtin-pack-refs.c
index d080e30..1952950 100644
--- a/builtin-pack-refs.c
+++ b/builtin-pack-refs.c
@@ -12,9 +12,11 @@ struct ref_to_prune {
char name[FLEX_ARRAY];
};
+#define PACK_REFS_PRUNE 0x0001
+#define PACK_REFS_ALL 0x0002
+
struct pack_refs_cb_data {
- int prune;
- int all;
+ unsigned int flags;
struct ref_to_prune *ref_to_prune;
FILE *refs_file;
};
@@ -39,7 +41,7 @@ static int handle_one_ref(const char *path, const unsigned char *sha1,
is_tag_ref = !prefixcmp(path, "refs/tags/");
/* ALWAYS pack refs that were already packed or are tags */
- if (!cb->all && !is_tag_ref && !(flags & REF_ISPACKED))
+ if (!(cb->flags & PACK_REFS_ALL) && !is_tag_ref && !(flags & REF_ISPACKED))
return 0;
fprintf(cb->refs_file, "%s %s\n", sha1_to_hex(sha1), path);
@@ -53,7 +55,7 @@ static int handle_one_ref(const char *path, const unsigned char *sha1,
}
}
- if (cb->prune && !do_not_prune(flags)) {
+ if ((cb->flags & PACK_REFS_PRUNE) && !do_not_prune(flags)) {
int namelen = strlen(path) + 1;
struct ref_to_prune *n = xcalloc(1, sizeof(*n) + namelen);
hashcpy(n->sha1, sha1);
@@ -85,26 +87,51 @@ static void prune_refs(struct ref_to_prune *r)
static struct lock_file packed;
-int cmd_pack_refs(int argc, const char **argv, const char *prefix)
+static int pack_refs(unsigned int flags)
{
- int fd, i;
+ int fd;
struct pack_refs_cb_data cbdata;
memset(&cbdata, 0, sizeof(cbdata));
+ cbdata.flags = flags;
+
+ fd = hold_lock_file_for_update(&packed, git_path("packed-refs"), 1);
+ cbdata.refs_file = fdopen(fd, "w");
+ if (!cbdata.refs_file)
+ die("unable to create ref-pack file structure (%s)",
+ strerror(errno));
+
+ /* perhaps other traits later as well */
+ fprintf(cbdata.refs_file, "# pack-refs with: peeled \n");
+
+ for_each_ref(handle_one_ref, &cbdata);
+ if (fflush(cbdata.refs_file) || fsync(fd) || fclose(cbdata.refs_file))
+ die("failed to write ref-pack file (%s)", strerror(errno));
+ if (commit_lock_file(&packed) < 0)
+ die("unable to overwrite old ref-pack file (%s)", strerror(errno));
+ if (cbdata.flags & PACK_REFS_PRUNE)
+ prune_refs(cbdata.ref_to_prune);
+ return 0;
+}
- cbdata.prune = 1;
+int cmd_pack_refs(int argc, const char **argv, const char *prefix)
+{
+ int i;
+ unsigned int flags;
+
+ flags = PACK_REFS_PRUNE;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--prune")) {
- cbdata.prune = 1; /* now the default */
+ flags |= PACK_REFS_PRUNE; /* now the default */
continue;
}
if (!strcmp(arg, "--no-prune")) {
- cbdata.prune = 0;
+ flags &= ~PACK_REFS_PRUNE;
continue;
}
if (!strcmp(arg, "--all")) {
- cbdata.all = 1;
+ flags |= PACK_REFS_ALL;
continue;
}
/* perhaps other parameters later... */
@@ -113,22 +140,5 @@ int cmd_pack_refs(int argc, const char **argv, const char *prefix)
if (i != argc)
usage(builtin_pack_refs_usage);
- fd = hold_lock_file_for_update(&packed, git_path("packed-refs"), 1);
- cbdata.refs_file = fdopen(fd, "w");
- if (!cbdata.refs_file)
- die("unable to create ref-pack file structure (%s)",
- strerror(errno));
-
- /* perhaps other traits later as well */
- fprintf(cbdata.refs_file, "# pack-refs with: peeled \n");
-
- for_each_ref(handle_one_ref, &cbdata);
- fflush(cbdata.refs_file);
- fsync(fd);
- fclose(cbdata.refs_file);
- if (commit_lock_file(&packed) < 0)
- die("unable to overwrite old ref-pack file (%s)", strerror(errno));
- if (cbdata.prune)
- prune_refs(cbdata.ref_to_prune);
- return 0;
+ return pack_refs(flags);
}