diff options
Diffstat (limited to 'receive-pack.c')
| -rw-r--r-- | receive-pack.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/receive-pack.c b/receive-pack.c index 78f75da5ca..a6ec9f900d 100644 --- a/receive-pack.c +++ b/receive-pack.c @@ -2,6 +2,8 @@ #include "refs.h" #include "pkt-line.h" #include "run-command.h" +#include "commit.h" +#include "object.h" static const char receive_pack_usage[] = "git-receive-pack <git-dir>"; @@ -127,6 +129,20 @@ static int update(struct command *cmd) return error("unpack should have generated %s, " "but I can't find it!", new_hex); } + if (deny_non_fast_forwards && !is_null_sha1(old_sha1)) { + struct commit *old_commit, *new_commit; + struct commit_list *bases; + + old_commit = (struct commit *)parse_object(old_sha1); + new_commit = (struct commit *)parse_object(new_sha1); + for (bases = get_merge_bases(old_commit, new_commit, 1); + bases; bases = bases->next) + if (!hashcmp(old_sha1, bases->item->object.sha1)) + break; + if (!bases) + return error("denying non-fast forward;" + " you should pull first"); + } safe_create_leading_directories(lock_name); newfd = open(lock_name, O_CREAT | O_EXCL | O_WRONLY, 0666); |