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Function for updating refs.

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A function intended to be called from builtins updating refs
by locking them before write, specially those that came from
scripts using "git update-ref".

[jc: with minor fixups]

Signed-off-by: Carlos Rica <jasampler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Carlos Rica
2007-09-05 03:38:24 +02:00
committed by Junio C Hamano
parent 1e61b7640d
commit 3d9f037c60
5 changed files with 46 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
builtin-fetch--tool.c
View File

@ -31,24 +31,19 @@ static void show_new(enum object_type type, unsigned char *sha1_new)
find_unique_abbrev(sha1_new, DEFAULT_ABBREV));
}
static int update_ref(const char *action,
static int update_ref_env(const char *action,
const char *refname,
unsigned char *sha1,
unsigned char *oldval)
{
char msg[1024];
char *rla = getenv("GIT_REFLOG_ACTION");
static struct ref_lock *lock;
if (!rla)
rla = "(reflog update)";
snprintf(msg, sizeof(msg), "%s: %s", rla, action);
lock = lock_any_ref_for_update(refname, oldval, 0);
if (!lock)
return 1;
if (write_ref_sha1(lock, sha1, msg) < 0)
return 1;
return 0;
if (snprintf(msg, sizeof(msg), "%s: %s", rla, action) >= sizeof(msg))
warning("reflog message too long: %.*s...", 50, msg);
return update_ref(msg, refname, sha1, oldval, 0, QUIET_ON_ERR);
}
static int update_local_ref(const char *name,
@ -88,7 +83,7 @@ static int update_local_ref(const char *name,
fprintf(stderr, "* %s: storing %s\n",
name, note);
show_new(type, sha1_new);
return update_ref(msg, name, sha1_new, NULL);
return update_ref_env(msg, name, sha1_new, NULL);
}
if (!hashcmp(sha1_old, sha1_new)) {
@ -102,7 +97,7 @@ static int update_local_ref(const char *name,
if (!strncmp(name, "refs/tags/", 10)) {
fprintf(stderr, "* %s: updating with %s\n", name, note);
show_new(type, sha1_new);
return update_ref("updating tag", name, sha1_new, NULL);
return update_ref_env("updating tag", name, sha1_new, NULL);
}
current = lookup_commit_reference(sha1_old);
@ -117,7 +112,7 @@ static int update_local_ref(const char *name,
fprintf(stderr, "* %s: fast forward to %s\n",
name, note);
fprintf(stderr, " old..new: %s..%s\n", oldh, newh);
return update_ref("fast forward", name, sha1_new, sha1_old);
return update_ref_env("fast forward", name, sha1_new, sha1_old);
}
if (!force) {
fprintf(stderr,
@ -131,7 +126,7 @@ static int update_local_ref(const char *name,
"* %s: forcing update to non-fast forward %s\n",
name, note);
fprintf(stderr, " old...new: %s...%s\n", oldh, newh);
return update_ref("forced-update", name, sha1_new, sha1_old);
return update_ref_env("forced-update", name, sha1_new, sha1_old);
}
static int append_fetch_head(FILE *fp,