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git branch -m: forbid renaming of a symref

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There may be cases where one would really want to rename the symbolic
ref without changing its value, but "git branch -m" is not such a
use-case.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Miklos Vajna
2008-10-29 01:05:27 +01:00
committed by Junio C Hamano
parent 569740bdd0
commit fa58186c9b
2 changed files with 17 additions and 20 deletions
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29
refs.c
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@ -964,14 +964,14 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
struct stat loginfo;
int log = !lstat(git_path("logs/%s", oldref), &loginfo);
const char *symref = NULL;
int is_symref = 0;
if (log && S_ISLNK(loginfo.st_mode))
return error("reflog for %s is a symlink", oldref);
symref = resolve_ref(oldref, orig_sha1, 1, &flag);
if (flag & REF_ISSYMREF)
is_symref = 1;
return error("refname %s is a symbolic ref, renaming it is not supported",
oldref);
if (!symref)
return error("refname %s not found", oldref);
@ -1035,20 +1035,17 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
}
logmoved = log;
if (!is_symref) {
lock = lock_ref_sha1_basic(newref, NULL, 0, NULL);
if (!lock) {
error("unable to lock %s for update", newref);
goto rollback;
}
lock->force_write = 1;
hashcpy(lock->old_sha1, orig_sha1);
if (write_ref_sha1(lock, orig_sha1, logmsg)) {
error("unable to write current sha1 into %s", newref);
goto rollback;
}
} else
create_symref(newref, symref, logmsg);
lock = lock_ref_sha1_basic(newref, NULL, 0, NULL);
if (!lock) {
error("unable to lock %s for update", newref);
goto rollback;
}
lock->force_write = 1;
hashcpy(lock->old_sha1, orig_sha1);
if (write_ref_sha1(lock, orig_sha1, logmsg)) {
error("unable to write current sha1 into %s", newref);
goto rollback;
}
return 0;