#include "refs.h"
#include "pkt-line.h"
#include "run-command.h"
+#include "exec_cmd.h"
#include "commit.h"
#include "object.h"
static const char receive_pack_usage[] = "git-receive-pack <git-dir>";
static int deny_non_fast_forwards = 0;
-static int unpack_limit = 5000;
+static int unpack_limit = 100;
static int report_status;
-static char capabilities[] = "report-status";
+static char capabilities[] = " report-status delete-refs ";
static int capabilities_sent;
static int receive_pack_config(const char *var, const char *value)
strcpy(new_hex, sha1_to_hex(new_sha1));
strcpy(old_hex, sha1_to_hex(old_sha1));
- if (!has_sha1_file(new_sha1)) {
+
+ if (!is_null_sha1(new_sha1) && !has_sha1_file(new_sha1)) {
cmd->error_string = "bad pack";
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)) {
+ if (deny_non_fast_forwards && !is_null_sha1(new_sha1) &&
+ !is_null_sha1(old_sha1) &&
+ !strncmp(name, "refs/heads/", 11)) {
struct commit *old_commit, *new_commit;
struct commit_list *bases, *ent;
return error("hook declined to update %s", name);
}
- lock = lock_any_ref_for_update(name, old_sha1);
- if (!lock) {
- cmd->error_string = "failed to lock";
- return error("failed to lock %s", name);
+ if (is_null_sha1(new_sha1)) {
+ if (delete_ref(name, old_sha1)) {
+ cmd->error_string = "failed to delete";
+ return error("failed to delete %s", name);
+ }
+ fprintf(stderr, "%s: %s -> deleted\n", name, old_hex);
+ }
+ else {
+ lock = lock_any_ref_for_update(name, old_sha1);
+ if (!lock) {
+ cmd->error_string = "failed to lock";
+ return error("failed to lock %s", name);
+ }
+ write_ref_sha1(lock, new_sha1, "push");
+ fprintf(stderr, "%s: %s -> %s\n", name, old_hex, new_hex);
}
- write_ref_sha1(lock, new_sha1, "push");
-
- fprintf(stderr, "%s: %s -> %s\n", name, old_hex, new_hex);
return 0;
}
return NULL;
}
+static const char *pack_lockfile;
+
static const char *unpack(void)
{
struct pack_header hdr;
const char *hdr_err;
char hdr_arg[38];
- int code;
hdr_err = parse_pack_header(&hdr);
if (hdr_err)
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;
code = run_command_v_opt(1, unpacker, RUN_GIT_CMD);
- } else {
- const char *keeper[6];
- char my_host[255], keep_arg[128 + 255];
-
- if (gethostname(my_host, sizeof(my_host)))
- strcpy(my_host, "localhost");
- snprintf(keep_arg, sizeof(keep_arg),
- "--keep=receive-pack %i on %s",
- getpid(), my_host);
-
- keeper[0] = "index-pack";
- keeper[1] = "--stdin";
- keeper[2] = "--fix-thin";
- keeper[3] = hdr_arg;
- keeper[4] = keep_arg;
- keeper[5] = NULL;
- code = run_command_v_opt(1, keeper, RUN_GIT_CMD);
- if (!code)
- reprepare_packed_git();
- }
-
- switch (code) {
+ switch (code) {
case 0:
return NULL;
case -ERR_RUN_COMMAND_FORK:
return "unpacker died strangely";
default:
return "unpacker exited with error code";
+ }
+ } else {
+ const char *keeper[6];
+ int fd[2], s, len, status;
+ pid_t pid;
+ char keep_arg[256];
+ char packname[46];
+
+ s = sprintf(keep_arg, "--keep=receive-pack %i on ", getpid());
+ 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;
+
+ if (pipe(fd) < 0)
+ return "index-pack pipe failed";
+ pid = fork();
+ if (pid < 0)
+ return "index-pack fork failed";
+ if (!pid) {
+ dup2(fd[1], 1);
+ close(fd[1]);
+ close(fd[0]);
+ execv_git_cmd(keeper);
+ die("execv of index-pack failed");
+ }
+ close(fd[1]);
+
+ /*
+ * The first thing we expects from index-pack's output
+ * is "pack\t%40s\n" or "keep\t%40s\n" (46 bytes) where
+ * %40s is the newly created pack SHA1 name. In the "keep"
+ * case, we need it to remove the corresponding .keep file
+ * later on. If we don't get that then tough luck with it.
+ */
+ for (len = 0;
+ len < 46 && (s = xread(fd[0], packname+len, 46-len)) > 0;
+ len += s);
+ close(fd[0]);
+ if (len == 46 && packname[45] == '\n' &&
+ memcmp(packname, "keep\t", 5) == 0) {
+ char path[PATH_MAX];
+ packname[45] = 0;
+ snprintf(path, sizeof(path), "%s/pack/pack-%s.keep",
+ get_object_directory(), packname + 5);
+ pack_lockfile = xstrdup(path);
+ }
+
+ /* Then wrap our index-pack process. */
+ while (waitpid(pid, &status, 0) < 0)
+ if (errno != EINTR)
+ return "waitpid failed";
+ if (WIFEXITED(status)) {
+ int code = WEXITSTATUS(status);
+ if (code)
+ return "index-pack exited with error code";
+ reprepare_packed_git();
+ return NULL;
+ }
+ return "index-pack abnormal exit";
}
}
packet_flush(1);
}
+static int delete_only(struct command *cmd)
+{
+ while (cmd) {
+ if (!is_null_sha1(cmd->new_sha1))
+ return 0;
+ cmd = cmd->next;
+ }
+ return 1;
+}
+
int main(int argc, char **argv)
{
int i;
die("'%s': unable to chdir or not a git archive", dir);
setup_ident();
+ /* don't die if gecos is empty */
+ ignore_missing_committer_name();
git_config(receive_pack_config);
write_head_info();
read_head_info();
if (commands) {
- const char *unpack_status = unpack();
+ const char *unpack_status = NULL;
+
+ if (!delete_only(commands))
+ unpack_status = unpack();
if (!unpack_status)
execute_commands();
+ if (pack_lockfile)
+ unlink(pack_lockfile);
if (report_status)
report(unpack_status);
}