fprintf(pack_pipe, "-%s\n", sha1_to_hex(commit->object.sha1));
}
-static void do_rev_list(int create_full_pack)
+static int do_rev_list(int fd, void *create_full_pack)
{
int i;
struct rev_info revs;
+ pack_pipe = fdopen(fd, "w");
if (create_full_pack)
use_thin_pack = 0; /* no point doing it */
init_revisions(&revs, NULL);
prepare_revision_walk(&revs);
mark_edges_uninteresting(revs.commits, &revs, show_edge);
traverse_commit_list(&revs, show_commit, show_object);
+ return 0;
}
static void create_pack_file(void)
{
- /* Pipe from rev-list to pack-objects
- */
- int lp_pipe[2];
- pid_t pid_rev_list;
+ struct async rev_list;
struct child_process pack_objects;
int create_full_pack = (nr_our_refs == want_obj.nr && !have_obj.nr);
char data[8193], progress[128];
char abort_msg[] = "aborting due to possible repository "
"corruption on the remote side.";
int buffered = -1;
+ ssize_t sz;
const char *argv[10];
int arg = 0;
- if (pipe(lp_pipe) < 0)
- die("git-upload-pack: unable to create pipe");
- pid_rev_list = fork();
- if (pid_rev_list < 0)
+ rev_list.proc = do_rev_list;
+ /* .data is just a boolean: any non-NULL value will do */
+ rev_list.data = create_full_pack ? &rev_list : NULL;
+ if (start_async(&rev_list))
die("git-upload-pack: unable to fork git-rev-list");
- if (!pid_rev_list) {
- close(lp_pipe[0]);
- pack_pipe = fdopen(lp_pipe[1], "w");
- do_rev_list(create_full_pack);
- exit(0);
- }
-
- /* writable pipe end must not be inherited by pack_objects */
- close(lp_pipe[1]);
-
argv[arg++] = "pack-objects";
argv[arg++] = "--stdout";
if (!no_progress)
argv[arg++] = NULL;
memset(&pack_objects, 0, sizeof(pack_objects));
- pack_objects.in = lp_pipe[0]; /* start_command closes it */
+ pack_objects.in = rev_list.out; /* start_command closes it */
pack_objects.out = -1;
pack_objects.err = -1;
pack_objects.git_cmd = 1;
pack_objects.argv = argv;
- if (start_command(&pack_objects)) {
- /* daemon sets things up to ignore TERM */
- kill(pid_rev_list, SIGKILL);
+
+ if (start_command(&pack_objects))
die("git-upload-pack: unable to fork git-pack-objects");
- }
/* We read from pack_objects.err to capture stderr output for
* progress bar, and pack_objects.out to capture the pack data.
*/
while (1) {
- const char *who;
struct pollfd pfd[2];
- pid_t pid;
- int status;
- ssize_t sz;
int pe, pu, pollsize;
reset_timeout();
pollsize++;
}
- if (pollsize) {
- if (poll(pfd, pollsize, -1) < 0) {
- if (errno != EINTR) {
- error("poll failed, resuming: %s",
- strerror(errno));
- sleep(1);
- }
- continue;
- }
- if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) {
- /* Data ready; we keep the last byte
- * to ourselves in case we detect
- * broken rev-list, so that we can
- * leave the stream corrupted. This
- * is unfortunate -- unpack-objects
- * would happily accept a valid pack
- * data with trailing garbage, so
- * appending garbage after we pass all
- * the pack data is not good enough to
- * signal breakage to downstream.
- */
- char *cp = data;
- ssize_t outsz = 0;
- if (0 <= buffered) {
- *cp++ = buffered;
- outsz++;
- }
- sz = xread(pack_objects.out, cp,
- sizeof(data) - outsz);
- if (0 < sz)
- ;
- else if (sz == 0) {
- close(pack_objects.out);
- pack_objects.out = -1;
- }
- else
- goto fail;
- sz += outsz;
- if (1 < sz) {
- buffered = data[sz-1] & 0xFF;
- sz--;
- }
- else
- buffered = -1;
- sz = send_client_data(1, data, sz);
- if (sz < 0)
- goto fail;
- }
- if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) {
- /* Status ready; we ship that in the side-band
- * or dump to the standard error.
- */
- sz = xread(pack_objects.err, progress,
- sizeof(progress));
- if (0 < sz)
- send_client_data(2, progress, sz);
- else if (sz == 0) {
- close(pack_objects.err);
- pack_objects.err = -1;
- }
- else
- goto fail;
+ if (!pollsize)
+ break;
+
+ if (poll(pfd, pollsize, -1) < 0) {
+ if (errno != EINTR) {
+ error("poll failed, resuming: %s",
+ strerror(errno));
+ sleep(1);
}
+ continue;
}
-
- /* See if the children are still there */
- if (pid_rev_list || pack_objects.pid) {
- pid = waitpid(-1, &status, WNOHANG);
- if (!pid)
- continue;
- who = ((pid == pid_rev_list) ? "git-rev-list" :
- (pid == pack_objects.pid) ? "git-pack-objects" :
- NULL);
- if (!who) {
- if (pid < 0) {
- error("git-upload-pack: %s",
- strerror(errno));
- goto fail;
- }
- error("git-upload-pack: we weren't "
- "waiting for %d", pid);
- continue;
+ if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) {
+ /* Data ready; we keep the last byte to ourselves
+ * in case we detect broken rev-list, so that we
+ * can leave the stream corrupted. This is
+ * unfortunate -- unpack-objects would happily
+ * accept a valid packdata with trailing garbage,
+ * so appending garbage after we pass all the
+ * pack data is not good enough to signal
+ * breakage to downstream.
+ */
+ char *cp = data;
+ ssize_t outsz = 0;
+ if (0 <= buffered) {
+ *cp++ = buffered;
+ outsz++;
+ }
+ sz = xread(pack_objects.out, cp,
+ sizeof(data) - outsz);
+ if (0 < sz)
+ ;
+ else if (sz == 0) {
+ close(pack_objects.out);
+ pack_objects.out = -1;
}
- if (!WIFEXITED(status) || WEXITSTATUS(status) > 0) {
- error("git-upload-pack: %s died with error.",
- who);
+ else
goto fail;
+ sz += outsz;
+ if (1 < sz) {
+ buffered = data[sz-1] & 0xFF;
+ sz--;
}
- if (pid == pid_rev_list)
- pid_rev_list = 0;
- if (pid == pack_objects.pid)
- pack_objects.pid = 0;
- if (pid_rev_list || pack_objects.pid)
- continue;
- }
-
- /* both died happily */
- if (pollsize)
- continue;
-
- /* flush the data */
- if (0 <= buffered) {
- data[0] = buffered;
- sz = send_client_data(1, data, 1);
+ else
+ buffered = -1;
+ sz = send_client_data(1, data, sz);
if (sz < 0)
goto fail;
- fprintf(stderr, "flushed.\n");
}
- if (use_sideband)
- packet_flush(1);
- return;
+ if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) {
+ /* Status ready; we ship that in the side-band
+ * or dump to the standard error.
+ */
+ sz = xread(pack_objects.err, progress,
+ sizeof(progress));
+ if (0 < sz)
+ send_client_data(2, progress, sz);
+ else if (sz == 0) {
+ close(pack_objects.err);
+ pack_objects.err = -1;
+ }
+ else
+ goto fail;
+ }
+ }
+
+ if (finish_command(&pack_objects)) {
+ error("git-upload-pack: git-pack-objects died with error.");
+ goto fail;
}
+ if (finish_async(&rev_list))
+ goto fail; /* error was already reported */
+
+ /* flush the data */
+ if (0 <= buffered) {
+ data[0] = buffered;
+ sz = send_client_data(1, data, 1);
+ if (sz < 0)
+ goto fail;
+ fprintf(stderr, "flushed.\n");
+ }
+ if (use_sideband)
+ packet_flush(1);
+ return;
+
fail:
- if (pack_objects.pid)
- kill(pack_objects.pid, SIGKILL);
- if (pid_rev_list)
- kill(pid_rev_list, SIGKILL);
send_client_data(3, abort_msg, sizeof(abort_msg));
die("git-upload-pack: %s", abort_msg);
}