bisect: add "git bisect help" subcommand to get a long usage string

diff --git a/receive-pack.c b/receive-pack.c
index fba4cf82353ff43eae7430c863680f481e03dcb0..828d49001d6c8494ede35e4ebbcea4fe482802dd 100644 (file)
--- a/receive-pack.c
+++ b/receive-pack.c
@@ -10,6 +10,7 @@
 static const char receive_pack_usage[] = "git-receive-pack <git-dir>";
 
 static int deny_non_fast_forwards = 0;
+static int receive_fsck_objects;
 static int receive_unpack_limit = -1;
 static int transfer_unpack_limit = -1;
 static int unpack_limit = 100;
@@ -35,6 +36,11 @@ static int receive_pack_config(const char *var, const char *value)
                return 0;
        }
 
+       if (strcmp(var, "receive.fsckobjects") == 0) {
+               receive_fsck_objects = git_config_bool(var, value);
+               return 0;
+       }
+
        return git_default_config(var, value);
 }
 
@@ -132,6 +138,7 @@ static int run_hook(const char *hook_name)
                                break;
                }
        }
+       close(proc.in);
        return hook_status(finish_command(&proc), hook_name);
 }
 
@@ -165,7 +172,8 @@ static const char *update(struct command *cmd)
        unsigned char *new_sha1 = cmd->new_sha1;
        struct ref_lock *lock;
 
-       if (!prefixcmp(name, "refs/") && check_ref_format(name + 5)) {
+       /* only refs/... are allowed */
+       if (prefixcmp(name, "refs/") || check_ref_format(name + 5)) {
                error("refusing to create funny ref '%s' remotely", name);
                return "funny refname";
        }
@@ -178,11 +186,21 @@ static const char *update(struct command *cmd)
        if (deny_non_fast_forwards && !is_null_sha1(new_sha1) &&
            !is_null_sha1(old_sha1) &&
            !prefixcmp(name, "refs/heads/")) {
+               struct object *old_object, *new_object;
                struct commit *old_commit, *new_commit;
                struct commit_list *bases, *ent;
 
-               old_commit = (struct commit *)parse_object(old_sha1);
-               new_commit = (struct commit *)parse_object(new_sha1);
+               old_object = parse_object(old_sha1);
+               new_object = parse_object(new_sha1);
+
+               if (!old_object || !new_object ||
+                   old_object->type != OBJ_COMMIT ||
+                   new_object->type != OBJ_COMMIT) {
+                       error("bad sha1 objects for %s", name);
+                       return "bad ref";
+               }
+               old_commit = (struct commit *)old_object;
+               new_commit = (struct commit *)new_object;
                bases = get_merge_bases(old_commit, new_commit, 1);
                for (ent = bases; ent; ent = ent->next)
                        if (!hashcmp(old_sha1, ent->item->object.sha1))
@@ -356,11 +374,13 @@ static const char *unpack(void)
                        ntohl(hdr.hdr_version), ntohl(hdr.hdr_entries));
 
        if (ntohl(hdr.hdr_entries) < unpack_limit) {
-               int code;
-               const char *unpacker[3];
-               unpacker[0] = "unpack-objects";
-               unpacker[1] = hdr_arg;
-               unpacker[2] = NULL;
+               int code, i = 0;
+               const char *unpacker[4];
+               unpacker[i++] = "unpack-objects";
+               if (receive_fsck_objects)
+                       unpacker[i++] = "--strict";
+               unpacker[i++] = hdr_arg;
+               unpacker[i++] = NULL;
                code = run_command_v_opt(unpacker, RUN_GIT_CMD);
                switch (code) {
                case 0:
@@ -381,8 +401,8 @@ static const char *unpack(void)
                        return "unpacker exited with error code";
                }
        } else {
-               const char *keeper[6];
-               int s, status;
+               const char *keeper[7];
+               int s, status, i = 0;
                char keep_arg[256];
                struct child_process ip;
 
@@ -390,12 +410,14 @@ static const char *unpack(void)
                if (gethostname(keep_arg + s, sizeof(keep_arg) - s))
                        strcpy(keep_arg + s, "localhost");
 
-               keeper[0] = "index-pack";
-               keeper[1] = "--stdin";
-               keeper[2] = "--fix-thin";
-               keeper[3] = hdr_arg;
-               keeper[4] = keep_arg;
-               keeper[5] = NULL;
+               keeper[i++] = "index-pack";
+               keeper[i++] = "--stdin";
+               if (receive_fsck_objects)
+                       keeper[i++] = "--strict";
+               keeper[i++] = "--fix-thin";
+               keeper[i++] = hdr_arg;
+               keeper[i++] = keep_arg;
+               keeper[i++] = NULL;
                memset(&ip, 0, sizeof(ip));
                ip.argv = keeper;
                ip.out = -1;
@@ -403,6 +425,7 @@ static const char *unpack(void)
                if (start_command(&ip))
                        return "index-pack fork failed";
                pack_lockfile = index_pack_lockfile(ip.out);
+               close(ip.out);
                status = finish_command(&ip);
                if (!status) {
                        reprepare_packed_git();
@@ -458,6 +481,8 @@ int main(int argc, char **argv)
        if (!dir)
                usage(receive_pack_usage);
 
+       setup_path(NULL);
+
        if (!enter_repo(dir, 0))
                die("'%s': unable to chdir or not a git archive", dir);