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-rw-r--r--bundle.c405
1 files changed, 239 insertions, 166 deletions
diff --git a/bundle.c b/bundle.c
index df95e151e2..2e2dbd50ef 100644
--- a/bundle.c
+++ b/bundle.c
@@ -1,4 +1,5 @@
#include "cache.h"
+#include "lockfile.h"
#include "bundle.h"
#include "object.h"
#include "commit.h"
@@ -7,68 +8,100 @@
#include "list-objects.h"
#include "run-command.h"
#include "refs.h"
+#include "argv-array.h"
static const char bundle_signature[] = "# v2 git bundle\n";
static void add_to_ref_list(const unsigned char *sha1, const char *name,
struct ref_list *list)
{
- if (list->nr + 1 >= list->alloc) {
- list->alloc = alloc_nr(list->nr + 1);
- list->list = xrealloc(list->list,
- list->alloc * sizeof(list->list[0]));
- }
- memcpy(list->list[list->nr].sha1, sha1, 20);
+ ALLOC_GROW(list->list, list->nr + 1, list->alloc);
+ hashcpy(list->list[list->nr].sha1, sha1);
list->list[list->nr].name = xstrdup(name);
list->nr++;
}
-/* returns an fd */
-int read_bundle_header(const char *path, struct bundle_header *header)
+static int parse_bundle_header(int fd, struct bundle_header *header,
+ const char *report_path)
{
- char buffer[1024];
- int fd;
- long fpos;
- FILE *ffd = fopen(path, "rb");
-
- if (!ffd)
- return error("could not open '%s'", path);
- if (!fgets(buffer, sizeof(buffer), ffd) ||
- strcmp(buffer, bundle_signature)) {
- fclose(ffd);
- return error("'%s' does not look like a v2 bundle file", path);
+ struct strbuf buf = STRBUF_INIT;
+ int status = 0;
+
+ /* The bundle header begins with the signature */
+ if (strbuf_getwholeline_fd(&buf, fd, '\n') ||
+ strcmp(buf.buf, bundle_signature)) {
+ if (report_path)
+ error(_("'%s' does not look like a v2 bundle file"),
+ report_path);
+ status = -1;
+ goto abort;
}
- while (fgets(buffer, sizeof(buffer), ffd)
- && buffer[0] != '\n') {
- int is_prereq = buffer[0] == '-';
- int offset = is_prereq ? 1 : 0;
- int len = strlen(buffer);
+
+ /* The bundle header ends with an empty line */
+ while (!strbuf_getwholeline_fd(&buf, fd, '\n') &&
+ buf.len && buf.buf[0] != '\n') {
unsigned char sha1[20];
- struct ref_list *list = is_prereq ? &header->prerequisites
- : &header->references;
- char delim;
-
- if (len && buffer[len - 1] == '\n')
- buffer[len - 1] = '\0';
- if (get_sha1_hex(buffer + offset, sha1)) {
- warning("unrecognized header: %s", buffer);
- continue;
+ int is_prereq = 0;
+
+ if (*buf.buf == '-') {
+ is_prereq = 1;
+ strbuf_remove(&buf, 0, 1);
+ }
+ strbuf_rtrim(&buf);
+
+ /*
+ * Tip lines have object name, SP, and refname.
+ * Prerequisites have object name that is optionally
+ * followed by SP and subject line.
+ */
+ if (get_sha1_hex(buf.buf, sha1) ||
+ (buf.len > 40 && !isspace(buf.buf[40])) ||
+ (!is_prereq && buf.len <= 40)) {
+ if (report_path)
+ error(_("unrecognized header: %s%s (%d)"),
+ (is_prereq ? "-" : ""), buf.buf, (int)buf.len);
+ status = -1;
+ break;
+ } else {
+ if (is_prereq)
+ add_to_ref_list(sha1, "", &header->prerequisites);
+ else
+ add_to_ref_list(sha1, buf.buf + 41, &header->references);
}
- delim = buffer[40 + offset];
- if (!isspace(delim) && (delim != '\0' || !is_prereq))
- die ("invalid header: %s", buffer);
- add_to_ref_list(sha1, isspace(delim) ?
- buffer + 41 + offset : "", list);
}
- fpos = ftell(ffd);
- fclose(ffd);
- fd = open(path, O_RDONLY);
- if (fd < 0)
- return error("could not open '%s'", path);
- lseek(fd, fpos, SEEK_SET);
+
+ abort:
+ if (status) {
+ close(fd);
+ fd = -1;
+ }
+ strbuf_release(&buf);
return fd;
}
+int read_bundle_header(const char *path, struct bundle_header *header)
+{
+ int fd = open(path, O_RDONLY);
+
+ if (fd < 0)
+ return error(_("could not open '%s'"), path);
+ return parse_bundle_header(fd, header, path);
+}
+
+int is_bundle(const char *path, int quiet)
+{
+ struct bundle_header header;
+ int fd = open(path, O_RDONLY);
+
+ if (fd < 0)
+ return 0;
+ memset(&header, 0, sizeof(header));
+ fd = parse_bundle_header(fd, &header, quiet ? NULL : path);
+ if (fd >= 0)
+ close(fd);
+ return (fd >= 0);
+}
+
static int list_refs(struct ref_list *r, int argc, const char **argv)
{
int i;
@@ -88,6 +121,7 @@ static int list_refs(struct ref_list *r, int argc, const char **argv)
return 0;
}
+/* Remember to update object flag allocation in object.h */
#define PREREQ_MARK (1u<<16)
int verify_bundle(struct bundle_header *header, int verbose)
@@ -102,7 +136,7 @@ int verify_bundle(struct bundle_header *header, int verbose)
struct object_array refs;
struct commit *commit;
int i, ret = 0, req_nr;
- const char *message = "Repository lacks these prerequisite commits:";
+ const char *message = _("Repository lacks these prerequisite commits:");
init_revisions(&revs, NULL);
for (i = 0; i < p->nr; i++) {
@@ -122,14 +156,11 @@ int verify_bundle(struct bundle_header *header, int verbose)
req_nr = revs.pending.nr;
setup_revisions(2, argv, &revs, NULL);
- memset(&refs, 0, sizeof(struct object_array));
- for (i = 0; i < revs.pending.nr; i++) {
- struct object_array_entry *e = revs.pending.objects + i;
- add_object_array(e->item, e->name, &refs);
- }
+ refs = revs.pending;
+ revs.leak_pending = 1;
if (prepare_revision_walk(&revs))
- die("revision walk setup failed");
+ die(_("revision walk setup failed"));
i = req_nr;
while (i && (commit = get_revision(&revs)))
@@ -144,20 +175,28 @@ int verify_bundle(struct bundle_header *header, int verbose)
refs.objects[i].name);
}
- for (i = 0; i < refs.nr; i++)
- clear_commit_marks((struct commit *)refs.objects[i].item, -1);
+ clear_commit_marks_for_object_array(&refs, ALL_REV_FLAGS);
+ free(refs.objects);
if (verbose) {
struct ref_list *r;
r = &header->references;
- printf("The bundle contains %d ref%s\n",
- r->nr, (1 < r->nr) ? "s" : "");
+ printf_ln(Q_("The bundle contains this ref:",
+ "The bundle contains these %d refs:",
+ r->nr),
+ r->nr);
list_refs(r, 0, NULL);
r = &header->prerequisites;
- printf("The bundle requires these %d ref%s\n",
- r->nr, (1 < r->nr) ? "s" : "");
- list_refs(r, 0, NULL);
+ if (!r->nr) {
+ printf_ln(_("The bundle records a complete history."));
+ } else {
+ printf_ln(Q_("The bundle requires this ref:",
+ "The bundle requires these %d refs:",
+ r->nr),
+ r->nr);
+ list_refs(r, 0, NULL);
+ }
}
return ret;
}
@@ -171,105 +210,122 @@ static int is_tag_in_date_range(struct object *tag, struct rev_info *revs)
{
unsigned long size;
enum object_type type;
- char *buf, *line, *lineend;
+ char *buf = NULL, *line, *lineend;
unsigned long date;
+ int result = 1;
if (revs->max_age == -1 && revs->min_age == -1)
- return 1;
+ goto out;
buf = read_sha1_file(tag->sha1, &type, &size);
if (!buf)
- return 1;
+ goto out;
line = memmem(buf, size, "\ntagger ", 8);
if (!line++)
- return 1;
- lineend = memchr(line, buf + size - line, '\n');
- line = memchr(line, lineend ? lineend - line : buf + size - line, '>');
+ goto out;
+ lineend = memchr(line, '\n', buf + size - line);
+ line = memchr(line, '>', lineend ? lineend - line : buf + size - line);
if (!line++)
- return 1;
+ goto out;
date = strtoul(line, NULL, 10);
- free(buf);
- return (revs->max_age == -1 || revs->max_age < date) &&
+ result = (revs->max_age == -1 || revs->max_age < date) &&
(revs->min_age == -1 || revs->min_age > date);
+out:
+ free(buf);
+ return result;
}
-int create_bundle(struct bundle_header *header, const char *path,
- int argc, const char **argv)
+static int write_pack_data(int bundle_fd, struct lock_file *lock, struct rev_info *revs)
{
- static struct lock_file lock;
- int bundle_fd = -1;
- int bundle_to_stdout;
- const char **argv_boundary = xmalloc((argc + 4) * sizeof(const char *));
- const char **argv_pack = xmalloc(5 * sizeof(const char *));
- int i, ref_count = 0;
- char buffer[1024];
- struct rev_info revs;
- int read_from_stdin = 0;
- struct child_process rls;
- FILE *rls_fout;
+ struct child_process pack_objects = CHILD_PROCESS_INIT;
+ int i;
- bundle_to_stdout = !strcmp(path, "-");
- if (bundle_to_stdout)
- bundle_fd = 1;
- else
- bundle_fd = hold_lock_file_for_update(&lock, path,
- LOCK_DIE_ON_ERROR);
+ argv_array_pushl(&pack_objects.args,
+ "pack-objects", "--all-progress-implied",
+ "--stdout", "--thin", "--delta-base-offset",
+ NULL);
+ pack_objects.in = -1;
+ pack_objects.out = bundle_fd;
+ pack_objects.git_cmd = 1;
+ if (start_command(&pack_objects))
+ return error(_("Could not spawn pack-objects"));
- /* write signature */
- write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
+ /*
+ * start_command closed bundle_fd if it was > 1
+ * so set the lock fd to -1 so commit_lock_file()
+ * won't fail trying to close it.
+ */
+ lock->fd = -1;
- /* init revs to list objects for pack-objects later */
- save_commit_buffer = 0;
- init_revisions(&revs, NULL);
+ for (i = 0; i < revs->pending.nr; i++) {
+ struct object *object = revs->pending.objects[i].item;
+ if (object->flags & UNINTERESTING)
+ write_or_die(pack_objects.in, "^", 1);
+ write_or_die(pack_objects.in, sha1_to_hex(object->sha1), 40);
+ write_or_die(pack_objects.in, "\n", 1);
+ }
+ close(pack_objects.in);
+ if (finish_command(&pack_objects))
+ return error(_("pack-objects died"));
+ return 0;
+}
- /* 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;
- memset(&rls, 0, sizeof(rls));
- rls.argv = argv_boundary;
+static int compute_and_write_prerequisites(int bundle_fd,
+ struct rev_info *revs,
+ int argc, const char **argv)
+{
+ struct child_process rls = CHILD_PROCESS_INIT;
+ struct strbuf buf = STRBUF_INIT;
+ FILE *rls_fout;
+ int i;
+
+ argv_array_pushl(&rls.args,
+ "rev-list", "--boundary", "--pretty=oneline",
+ NULL);
+ for (i = 1; i < argc; i++)
+ argv_array_push(&rls.args, argv[i]);
rls.out = -1;
rls.git_cmd = 1;
if (start_command(&rls))
return -1;
rls_fout = xfdopen(rls.out, "r");
- while (fgets(buffer, sizeof(buffer), rls_fout)) {
+ while (strbuf_getwholeline(&buf, rls_fout, '\n') != EOF) {
unsigned char sha1[20];
- if (buffer[0] == '-') {
- write_or_die(bundle_fd, buffer, strlen(buffer));
- if (!get_sha1_hex(buffer + 1, sha1)) {
- struct object *object = parse_object(sha1);
+ if (buf.len > 0 && buf.buf[0] == '-') {
+ write_or_die(bundle_fd, buf.buf, buf.len);
+ if (!get_sha1_hex(buf.buf + 1, sha1)) {
+ struct object *object = parse_object_or_die(sha1, buf.buf);
object->flags |= UNINTERESTING;
- add_pending_object(&revs, object, buffer);
+ add_pending_object(revs, object, buf.buf);
}
- } else if (!get_sha1_hex(buffer, sha1)) {
- struct object *object = parse_object(sha1);
+ } else if (!get_sha1_hex(buf.buf, sha1)) {
+ struct object *object = parse_object_or_die(sha1, buf.buf);
object->flags |= SHOWN;
}
}
+ strbuf_release(&buf);
fclose(rls_fout);
if (finish_command(&rls))
- return error("rev-list died");
-
- /* write references */
- argc = setup_revisions(argc, argv, &revs, NULL);
-
- for (i = 1; i < argc; i++) {
- if (!strcmp(argv[i], "--stdin")) {
- if (read_from_stdin++)
- die("--stdin given twice?");
- read_revisions_from_stdin(&revs);
- continue;
- }
- return error("unrecognized argument: %s'", argv[i]);
- }
+ return error(_("rev-list died"));
+ return 0;
+}
- object_array_remove_duplicates(&revs.pending);
+/*
+ * Write out bundle refs based on the tips already
+ * parsed into revs.pending. As a side effect, may
+ * manipulate revs.pending to include additional
+ * necessary objects (like tags).
+ *
+ * Returns the number of refs written, or negative
+ * on error.
+ */
+static int write_bundle_refs(int bundle_fd, struct rev_info *revs)
+{
+ int i;
+ int ref_count = 0;
- for (i = 0; i < revs.pending.nr; i++) {
- struct object_array_entry *e = revs.pending.objects + i;
+ for (i = 0; i < revs->pending.nr; i++) {
+ struct object_array_entry *e = revs->pending.objects + i;
unsigned char sha1[20];
char *ref;
const char *display_ref;
@@ -279,12 +335,12 @@ int create_bundle(struct bundle_header *header, const char *path,
continue;
if (dwim_ref(e->name, strlen(e->name), sha1, &ref) != 1)
continue;
- if (!resolve_ref(e->name, sha1, 1, &flag))
+ if (read_ref_full(e->name, RESOLVE_REF_READING, sha1, &flag))
flag = 0;
display_ref = (flag & REF_ISSYMREF) ? e->name : ref;
if (e->item->type == OBJ_TAG &&
- !is_tag_in_date_range(e->item, &revs)) {
+ !is_tag_in_date_range(e->item, revs)) {
e->item->flags |= UNINTERESTING;
continue;
}
@@ -299,7 +355,7 @@ int create_bundle(struct bundle_header *header, const char *path,
* constraints.
*/
if (!(e->item->flags & SHOWN) && e->item->type == OBJ_COMMIT) {
- warning("ref '%s' is excluded by the rev-list options",
+ warning(_("ref '%s' is excluded by the rev-list options"),
e->name);
free(ref);
continue;
@@ -328,9 +384,9 @@ int create_bundle(struct bundle_header *header, const char *path,
* end up triggering "empty bundle"
* error.
*/
- obj = parse_object(sha1);
+ obj = parse_object_or_die(sha1, e->name);
obj->flags |= SHOWN;
- add_pending_object(&revs, obj, e->name);
+ add_pending_object(revs, obj, e->name);
}
free(ref);
continue;
@@ -343,62 +399,79 @@ int create_bundle(struct bundle_header *header, const char *path,
write_or_die(bundle_fd, "\n", 1);
free(ref);
}
- if (!ref_count)
- die ("Refusing to create empty bundle.");
/* end header */
write_or_die(bundle_fd, "\n", 1);
+ return ref_count;
+}
- /* write pack */
- argv_pack[0] = "pack-objects";
- argv_pack[1] = "--all-progress";
- argv_pack[2] = "--stdout";
- 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");
+int create_bundle(struct bundle_header *header, const char *path,
+ int argc, const char **argv)
+{
+ static struct lock_file lock;
+ int bundle_fd = -1;
+ int bundle_to_stdout;
+ int ref_count = 0;
+ struct rev_info revs;
- /*
- * start_command closed bundle_fd if it was > 1
- * so set the lock fd to -1 so commit_lock_file()
- * won't fail trying to close it.
- */
- lock.fd = -1;
+ bundle_to_stdout = !strcmp(path, "-");
+ if (bundle_to_stdout)
+ bundle_fd = 1;
+ else
+ bundle_fd = hold_lock_file_for_update(&lock, path,
+ LOCK_DIE_ON_ERROR);
- for (i = 0; i < revs.pending.nr; i++) {
- struct object *object = revs.pending.objects[i].item;
- if (object->flags & UNINTERESTING)
- write_or_die(rls.in, "^", 1);
- write_or_die(rls.in, sha1_to_hex(object->sha1), 40);
- write_or_die(rls.in, "\n", 1);
+ /* 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 */
+ if (compute_and_write_prerequisites(bundle_fd, &revs, argc, argv))
+ return -1;
+
+ argc = setup_revisions(argc, argv, &revs, NULL);
+
+ if (argc > 1)
+ return error(_("unrecognized argument: %s"), argv[1]);
+
+ object_array_remove_duplicates(&revs.pending);
+
+ ref_count = write_bundle_refs(bundle_fd, &revs);
+ if (!ref_count)
+ die(_("Refusing to create empty bundle."));
+ else if (ref_count < 0)
+ return -1;
+
+ /* write pack */
+ if (write_pack_data(bundle_fd, &lock, &revs))
+ return -1;
+
+ if (!bundle_to_stdout) {
+ if (commit_lock_file(&lock))
+ die_errno(_("cannot create '%s'"), path);
}
- close(rls.in);
- if (finish_command(&rls))
- return error ("pack-objects died");
- if (!bundle_to_stdout)
- commit_lock_file(&lock);
return 0;
}
-int unbundle(struct bundle_header *header, int bundle_fd)
+int unbundle(struct bundle_header *header, int bundle_fd, int flags)
{
const char *argv_index_pack[] = {"index-pack",
- "--fix-thin", "--stdin", NULL};
- struct child_process ip;
+ "--fix-thin", "--stdin", NULL, NULL};
+ struct child_process ip = CHILD_PROCESS_INIT;
+
+ if (flags & BUNDLE_VERBOSE)
+ argv_index_pack[3] = "-v";
if (verify_bundle(header, 0))
return -1;
- 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 error(_("index-pack died"));
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 11:06:08 +0000