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| author |  Junio C Hamano <gitster@pobox.com> | 2016-09-01 15:38:02 -0700 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2016-09-02 09:01:38 -0700 |
| commit | 12cfa792b8657cfd37523df83df0a83d987570a5 (patch) | |
| tree | 8d79e6b3a0f2b1a4bf1e7b773a39d14751ff92c9 /builtin/symbolic-ref.c | |
| parent | Git 2.9.3 (diff) | |
| download | tgif-12cfa792b8657cfd37523df83df0a83d987570a5.tar.xz | |
symbolic-ref -d: do not allow removal of HEAD
If you delete the symbolic-ref HEAD from a repository, Git no longer
considers the repository valid, and even "git symbolic-ref HEAD
refs/heads/master" would not be able to recover from that state
(although "git init" can, but that is a sure sign that you are
talking about a "broken" repository).
In the spirit similar to afe5d3d5 ("symbolic ref: refuse non-ref
targets in HEAD", 2009-01-29), forbid removal of HEAD to avoid
corrupting a repository.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/symbolic-ref.c')
| -rw-r--r-- | builtin/symbolic-ref.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/builtin/symbolic-ref.c b/builtin/symbolic-ref.c index 9c29a64e43..96eed94468 100644 --- a/builtin/symbolic-ref.c +++ b/builtin/symbolic-ref.c @@ -56,6 +56,8 @@ int cmd_symbolic_ref(int argc, const char **argv, const char *prefix) ret = check_symref(argv[0], 1, 0, 0); if (ret) die("Cannot delete %s, not a symbolic ref", argv[0]); + if (!strcmp(argv[0], "HEAD")) + die("deleting '%s' is not allowed", argv[0]); return delete_ref(argv[0], NULL, REF_NODEREF); } |