#include "diff.h"
#include "revision.h"
#include "list-objects.h"
-#include "exec_cmd.h"
+#include "run-command.h"
/*
* Basic handler for bundle files to connect repositories via sneakernet.
return fd;
}
-/* if in && *in >= 0, take that as input file descriptor instead */
-static int fork_with_pipe(const char **argv, int *in, int *out)
-{
- int needs_in, needs_out;
- int fdin[2], fdout[2], pid;
-
- needs_in = in && *in < 0;
- if (needs_in) {
- if (pipe(fdin) < 0)
- return error("could not setup pipe");
- *in = fdin[1];
- }
-
- needs_out = out && *out < 0;
- if (needs_out) {
- if (pipe(fdout) < 0)
- return error("could not setup pipe");
- *out = fdout[0];
- }
-
- if ((pid = fork()) < 0) {
- if (needs_in) {
- close(fdin[0]);
- close(fdin[1]);
- }
- if (needs_out) {
- close(fdout[0]);
- close(fdout[1]);
- }
- return error("could not fork");
- }
- if (!pid) {
- if (needs_in) {
- dup2(fdin[0], 0);
- close(fdin[0]);
- close(fdin[1]);
- } else if (in) {
- dup2(*in, 0);
- close(*in);
- }
- if (needs_out) {
- dup2(fdout[1], 1);
- close(fdout[0]);
- close(fdout[1]);
- } else if (out) {
- dup2(*out, 1);
- close(*out);
- }
- exit(execv_git_cmd(argv));
- }
- if (needs_in)
- close(fdin[0]);
- else if (in)
- close(*in);
- if (needs_out)
- close(fdout[1]);
- else if (out)
- close(*out);
- return pid;
-}
-
static int list_refs(struct ref_list *r, int argc, const char **argv)
{
int i;
return list_refs(&header->references, argc, argv);
}
-static void show_commit(struct commit *commit)
-{
- write_or_die(1, sha1_to_hex(commit->object.sha1), 40);
- write_or_die(1, "\n", 1);
- if (commit->parents) {
- free_commit_list(commit->parents);
- commit->parents = NULL;
- }
-}
-
-static void show_object(struct object_array_entry *p)
-{
- /* An object with name "foo\n0000000..." can be used to
- * confuse downstream git-pack-objects very badly.
- */
- const char *ep = strchr(p->name, '\n');
- int len = ep ? ep - p->name : strlen(p->name);
- write_or_die(1, sha1_to_hex(p->item->sha1), 40);
- write_or_die(1, " ", 1);
- if (len)
- write_or_die(1, p->name, len);
- write_or_die(1, "\n", 1);
-}
-
-static void show_edge(struct commit *commit)
-{
- ; /* nothing to do */
-}
-
static int create_bundle(struct bundle_header *header, const char *path,
int argc, const char **argv)
{
int bundle_fd = -1;
const char **argv_boundary = xmalloc((argc + 4) * sizeof(const char *));
- const char **argv_pack = xmalloc(4 * sizeof(const char *));
- int pid, in, out, i, status;
+ const char **argv_pack = xmalloc(5 * sizeof(const char *));
+ int i, ref_count = 0;
char buffer[1024];
struct rev_info revs;
- struct object_array tips;
+ struct child_process rls;
bundle_fd = (!strcmp(path, "-") ? 1 :
- open(path, O_CREAT | O_WRONLY, 0666));
+ open(path, O_CREAT | O_EXCL | O_WRONLY, 0666));
if (bundle_fd < 0)
- return error("Could not write to '%s'", path);
+ return error("Could not create '%s': %s", path, strerror(errno));
/* write signature */
write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
+ /* init revs to list objects for pack-objects later */
+ save_commit_buffer = 0;
+ init_revisions(&revs, NULL);
+
/* write prerequisites */
memcpy(argv_boundary + 3, argv + 1, argc * sizeof(const char *));
argv_boundary[0] = "rev-list";
argv_boundary[1] = "--boundary";
argv_boundary[2] = "--pretty=oneline";
argv_boundary[argc + 2] = NULL;
- out = -1;
- pid = fork_with_pipe(argv_boundary, NULL, &out);
- if (pid < 0)
+ memset(&rls, 0, sizeof(rls));
+ rls.argv = argv_boundary;
+ rls.out = -1;
+ rls.git_cmd = 1;
+ if (start_command(&rls))
return -1;
- while ((i = read_string(out, buffer, sizeof(buffer))) > 0)
- if (buffer[0] == '-')
+ while ((i = read_string(rls.out, buffer, sizeof(buffer))) > 0) {
+ unsigned char sha1[20];
+ if (buffer[0] == '-') {
write_or_die(bundle_fd, buffer, i);
- while ((i = waitpid(pid, &status, 0)) < 0)
- if (errno != EINTR)
- return error("rev-list died");
- if (!WIFEXITED(status) || WEXITSTATUS(status))
- return error("rev-list died %d", WEXITSTATUS(status));
+ if (!get_sha1_hex(buffer + 1, sha1)) {
+ struct object *object = parse_object(sha1);
+ object->flags |= UNINTERESTING;
+ add_pending_object(&revs, object, buffer);
+ }
+ } else if (!get_sha1_hex(buffer, sha1)) {
+ struct object *object = parse_object(sha1);
+ object->flags |= SHOWN;
+ }
+ }
+ if (finish_command(&rls))
+ return error("rev-list died");
/* write references */
- save_commit_buffer = 0;
- init_revisions(&revs, NULL);
- revs.tag_objects = 1;
- revs.tree_objects = 1;
- revs.blob_objects = 1;
argc = setup_revisions(argc, argv, &revs, NULL);
if (argc > 1)
return error("unrecognized argument: %s'", argv[1]);
- memset(&tips, 0, sizeof(tips));
for (i = 0; i < revs.pending.nr; i++) {
struct object_array_entry *e = revs.pending.objects + i;
unsigned char sha1[20];
continue;
if (dwim_ref(e->name, strlen(e->name), sha1, &ref) != 1)
continue;
+ /*
+ * Make sure the refs we wrote out is correct; --max-count and
+ * other limiting options could have prevented all the tips
+ * from getting output.
+ */
+ if (!(e->item->flags & SHOWN)) {
+ warn("ref '%s' is excluded by the rev-list options",
+ e->name);
+ continue;
+ }
+ ref_count++;
write_or_die(bundle_fd, sha1_to_hex(e->item->sha1), 40);
write_or_die(bundle_fd, " ", 1);
write_or_die(bundle_fd, ref, strlen(ref));
write_or_die(bundle_fd, "\n", 1);
- add_object_array(e->item, e->name, &tips);
free(ref);
}
+ if (!ref_count)
+ die ("Refusing to create empty bundle.");
/* end header */
write_or_die(bundle_fd, "\n", 1);
argv_pack[0] = "pack-objects";
argv_pack[1] = "--all-progress";
argv_pack[2] = "--stdout";
- argv_pack[3] = NULL;
- in = -1;
- out = bundle_fd;
- pid = fork_with_pipe(argv_pack, &in, &out);
- if (pid < 0)
+ argv_pack[3] = "--thin";
+ argv_pack[4] = NULL;
+ memset(&rls, 0, sizeof(rls));
+ rls.argv = argv_pack;
+ rls.in = -1;
+ rls.out = bundle_fd;
+ rls.git_cmd = 1;
+ if (start_command(&rls))
return error("Could not spawn pack-objects");
- close(1);
- dup2(in, 1);
- close(in);
- prepare_revision_walk(&revs);
- mark_edges_uninteresting(revs.commits, &revs, show_edge);
- traverse_commit_list(&revs, show_commit, show_object);
- close(1);
- while (waitpid(pid, &status, 0) < 0)
- if (errno != EINTR)
- return -1;
- if (!WIFEXITED(status) || WEXITSTATUS(status))
- return error ("pack-objects died");
-
- /*
- * Make sure the refs we wrote out is correct; --max-count and
- * other limiting options could have prevented all the tips
- * from getting output.
- */
- status = 0;
- for (i = 0; i < tips.nr; i++) {
- if (!(tips.objects[i].item->flags & SHOWN)) {
- status = 1;
- error("%s: not included in the resulting pack",
- tips.objects[i].name);
- }
+ for (i = 0; i < revs.pending.nr; i++) {
+ struct object *object = revs.pending.objects[i].item;
+ if (object->flags & UNINTERESTING)
+ write(rls.in, "^", 1);
+ write(rls.in, sha1_to_hex(object->sha1), 40);
+ write(rls.in, "\n", 1);
}
-
- return status;
+ if (finish_command(&rls))
+ return error ("pack-objects died");
+ return 0;
}
static int unbundle(struct bundle_header *header, int bundle_fd,
int argc, const char **argv)
{
- const char *argv_index_pack[] = {"index-pack", "--stdin", NULL};
- int pid, status, dev_null;
+ const char *argv_index_pack[] = {"index-pack",
+ "--fix-thin", "--stdin", NULL};
+ struct child_process ip;
if (verify_bundle(header, 0))
return -1;
- dev_null = open("/dev/null", O_WRONLY);
- if (dev_null < 0)
- return error("Could not open /dev/null");
- pid = fork_with_pipe(argv_index_pack, &bundle_fd, &dev_null);
- if (pid < 0)
- return error("Could not spawn index-pack");
- while (waitpid(pid, &status, 0) < 0)
- if (errno != EINTR)
- return error("index-pack died");
- if (!WIFEXITED(status) || WEXITSTATUS(status))
- return error("index-pack exited with status %d",
- WEXITSTATUS(status));
+ memset(&ip, 0, sizeof(ip));
+ ip.argv = argv_index_pack;
+ ip.in = bundle_fd;
+ ip.no_stdout = 1;
+ ip.git_cmd = 1;
+ if (run_command(&ip))
+ return error("index-pack died");
return list_heads(header, argc, argv);
}