diff options
| -rw-r--r-- | builtin-receive-pack.c | 72 | ||||
| -rwxr-xr-x | t/t5400-send-pack.sh | 13 |
2 files changed, 74 insertions, 11 deletions
diff --git a/builtin-receive-pack.c b/builtin-receive-pack.c index 6de186c397..1dc373e310 100644 --- a/builtin-receive-pack.c +++ b/builtin-receive-pack.c @@ -21,11 +21,13 @@ enum deny_action { static int deny_deletes = 0; static int deny_non_fast_forwards = 0; static enum deny_action deny_current_branch = DENY_UNCONFIGURED; +static enum deny_action deny_delete_current = DENY_UNCONFIGURED; static int receive_fsck_objects; static int receive_unpack_limit = -1; static int transfer_unpack_limit = -1; static int unpack_limit = 100; static int report_status; +static const char *head_name; static char capabilities[] = " report-status delete-refs "; static int capabilities_sent; @@ -77,6 +79,11 @@ static int receive_pack_config(const char *var, const char *value, void *cb) return 0; } + if (strcmp(var, "receive.denydeletecurrent") == 0) { + deny_delete_current = parse_deny_action(var, value); + return 0; + } + return git_default_config(var, value, cb); } @@ -203,16 +210,12 @@ static int run_update_hook(struct command *cmd) static int is_ref_checked_out(const char *ref) { - unsigned char sha1[20]; - const char *head; - if (is_bare_repository()) return 0; - head = resolve_ref("HEAD", sha1, 0, NULL); - if (!head) + if (!head_name) return 0; - return !strcmp(head, ref); + return !strcmp(head_name, ref); } static char *warn_unconfigured_deny_msg[] = { @@ -244,6 +247,32 @@ static void warn_unconfigured_deny(void) warning(warn_unconfigured_deny_msg[i]); } +static char *warn_unconfigured_deny_delete_current_msg[] = { + "Deleting the current branch can cause confusion by making the next", + "'git clone' not check out any file.", + "", + "You can set 'receive.denyDeleteCurrent' configuration variable to", + "'refuse' in the remote repository to disallow deleting the current", + "branch.", + "", + "You can set it to 'ignore' to allow such a delete without a warning.", + "", + "To make this warning message less loud, you can set it to 'warn'.", + "", + "Note that the default will change in a future version of git", + "to refuse deleting the current branch unless you have the", + "configuration variable set to either 'ignore' or 'warn'." +}; + +static void warn_unconfigured_deny_delete_current(void) +{ + int i; + for (i = 0; + i < ARRAY_SIZE(warn_unconfigured_deny_delete_current_msg); + i++) + warning(warn_unconfigured_deny_delete_current_msg[i]); +} + static const char *update(struct command *cmd) { const char *name = cmd->ref_name; @@ -278,12 +307,30 @@ static const char *update(struct command *cmd) "but I can't find it!", sha1_to_hex(new_sha1)); return "bad pack"; } - if (deny_deletes && is_null_sha1(new_sha1) && - !is_null_sha1(old_sha1) && - !prefixcmp(name, "refs/heads/")) { - error("denying ref deletion for %s", name); - return "deletion prohibited"; + + if (!is_null_sha1(old_sha1) && is_null_sha1(new_sha1)) { + if (deny_deletes && !prefixcmp(name, "refs/heads/")) { + error("denying ref deletion for %s", name); + return "deletion prohibited"; + } + + if (!strcmp(name, head_name)) { + switch (deny_delete_current) { + case DENY_IGNORE: + break; + case DENY_WARN: + case DENY_UNCONFIGURED: + if (deny_delete_current == DENY_UNCONFIGURED) + warn_unconfigured_deny_delete_current(); + warning("deleting the current branch"); + break; + case DENY_REFUSE: + error("refusing to delete the current branch: %s", name); + return "deletion of the current branch prohibited"; + } + } } + if (deny_non_fast_forwards && !is_null_sha1(new_sha1) && !is_null_sha1(old_sha1) && !prefixcmp(name, "refs/heads/")) { @@ -377,6 +424,7 @@ static void run_update_post_hook(struct command *cmd) static void execute_commands(const char *unpacker_error) { struct command *cmd = commands; + unsigned char sha1[20]; if (unpacker_error) { while (cmd) { @@ -394,6 +442,8 @@ static void execute_commands(const char *unpacker_error) return; } + head_name = resolve_ref("HEAD", sha1, 0, NULL); + while (cmd) { cmd->error_string = update(cmd); cmd = cmd->next; diff --git a/t/t5400-send-pack.sh b/t/t5400-send-pack.sh index d6151f8854..f2d5581b12 100755 --- a/t/t5400-send-pack.sh +++ b/t/t5400-send-pack.sh @@ -190,4 +190,17 @@ test_expect_success 'pushing wildcard refspecs respects forcing' ' test "$parent_head" = "$child_head" ' +test_expect_success 'warn pushing to delete current branch' ' + rewound_push_setup && + ( + cd child && + git send-pack ../parent :refs/heads/master 2>errs + ) && + grep "warning: to refuse deleting" child/errs && + ( + cd parent && + test_must_fail git rev-parse --verify master + ) +' + test_done |