mirror of
https://github.com/git/git
synced 2024-08-27 19:49:21 +00:00
![Tay Ray Chuan](/assets/img/avatar_default.png)
Move the logic that detects up-to-date and non-fast-forward refs to a new function in remote.[ch], set_ref_status_for_push(). Make transport_push() invoke set_ref_status_for_push() before invoking the push_refs() implementation. (As a side-effect, the push_refs() implementation in transport-helper.c now knows of non-fast-forward pushes.) Removed logic for detecting up-to-date refs from the push_refs() implementation in transport-helper.c, as transport_push() has already done so for it. Make cmd_send_pack() invoke set_ref_status_for_push() before invoking send_pack(), as transport_push() can't do it for send_pack() here. Mark the test on the return status of non-fast-forward push to fail. Git now exits with success, as transport.c::transport_push() does not check for refs with status REF_STATUS_REJECT_NONFASTFORWARD nor does it indicate rejected pushes with its return value. Mark the test for ref status to succeed. As mentioned earlier, refs might be marked as non-fast-forwards, triggering the push status printing mechanism in transport.c. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
673 lines
15 KiB
C
673 lines
15 KiB
C
#include "cache.h"
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#include "commit.h"
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#include "refs.h"
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#include "pkt-line.h"
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#include "sideband.h"
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#include "run-command.h"
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#include "remote.h"
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#include "send-pack.h"
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#include "quote.h"
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static const char send_pack_usage[] =
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"git send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
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" --all and explicit <ref> specification are mutually exclusive.";
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static struct send_pack_args args;
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static int feed_object(const unsigned char *sha1, int fd, int negative)
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{
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char buf[42];
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if (negative && !has_sha1_file(sha1))
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return 1;
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memcpy(buf + negative, sha1_to_hex(sha1), 40);
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if (negative)
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buf[0] = '^';
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buf[40 + negative] = '\n';
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return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs");
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}
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/*
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* Make a pack stream and spit it out into file descriptor fd
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*/
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static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args)
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{
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/*
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* The child becomes pack-objects --revs; we feed
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* the revision parameters to it via its stdin and
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* let its stdout go back to the other end.
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*/
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const char *argv[] = {
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"pack-objects",
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"--all-progress-implied",
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"--revs",
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"--stdout",
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NULL,
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NULL,
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NULL,
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NULL,
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};
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struct child_process po;
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int i;
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i = 4;
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if (args->use_thin_pack)
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argv[i++] = "--thin";
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if (args->use_ofs_delta)
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argv[i++] = "--delta-base-offset";
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if (args->quiet)
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argv[i++] = "-q";
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memset(&po, 0, sizeof(po));
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po.argv = argv;
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po.in = -1;
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po.out = args->stateless_rpc ? -1 : fd;
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po.git_cmd = 1;
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if (start_command(&po))
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die_errno("git pack-objects failed");
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/*
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* We feed the pack-objects we just spawned with revision
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* parameters by writing to the pipe.
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*/
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for (i = 0; i < extra->nr; i++)
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if (!feed_object(extra->array[i], po.in, 1))
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break;
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while (refs) {
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if (!is_null_sha1(refs->old_sha1) &&
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!feed_object(refs->old_sha1, po.in, 1))
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break;
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if (!is_null_sha1(refs->new_sha1) &&
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!feed_object(refs->new_sha1, po.in, 0))
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break;
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refs = refs->next;
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}
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close(po.in);
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if (args->stateless_rpc) {
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char *buf = xmalloc(LARGE_PACKET_MAX);
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while (1) {
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ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
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if (n <= 0)
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break;
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send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
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}
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free(buf);
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close(po.out);
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po.out = -1;
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}
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if (finish_command(&po))
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return error("pack-objects died with strange error");
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return 0;
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}
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static int receive_status(int in, struct ref *refs)
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{
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struct ref *hint;
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char line[1000];
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int ret = 0;
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int len = packet_read_line(in, line, sizeof(line));
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if (len < 10 || memcmp(line, "unpack ", 7))
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return error("did not receive remote status");
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if (memcmp(line, "unpack ok\n", 10)) {
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char *p = line + strlen(line) - 1;
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if (*p == '\n')
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*p = '\0';
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error("unpack failed: %s", line + 7);
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ret = -1;
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}
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hint = NULL;
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while (1) {
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char *refname;
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char *msg;
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len = packet_read_line(in, line, sizeof(line));
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if (!len)
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break;
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if (len < 3 ||
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(memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) {
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fprintf(stderr, "protocol error: %s\n", line);
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ret = -1;
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break;
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}
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line[strlen(line)-1] = '\0';
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refname = line + 3;
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msg = strchr(refname, ' ');
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if (msg)
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*msg++ = '\0';
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/* first try searching at our hint, falling back to all refs */
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if (hint)
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hint = find_ref_by_name(hint, refname);
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if (!hint)
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hint = find_ref_by_name(refs, refname);
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if (!hint) {
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warning("remote reported status on unknown ref: %s",
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refname);
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continue;
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}
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if (hint->status != REF_STATUS_EXPECTING_REPORT) {
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warning("remote reported status on unexpected ref: %s",
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refname);
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continue;
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}
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if (line[0] == 'o' && line[1] == 'k')
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hint->status = REF_STATUS_OK;
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else {
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hint->status = REF_STATUS_REMOTE_REJECT;
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ret = -1;
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}
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if (msg)
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hint->remote_status = xstrdup(msg);
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/* start our next search from the next ref */
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hint = hint->next;
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}
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return ret;
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}
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static void update_tracking_ref(struct remote *remote, struct ref *ref)
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{
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struct refspec rs;
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if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
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return;
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rs.src = ref->name;
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rs.dst = NULL;
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if (!remote_find_tracking(remote, &rs)) {
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if (args.verbose)
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fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
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if (ref->deletion) {
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delete_ref(rs.dst, NULL, 0);
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} else
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update_ref("update by push", rs.dst,
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ref->new_sha1, NULL, 0, 0);
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free(rs.dst);
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}
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}
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#define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
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static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg)
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{
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fprintf(stderr, " %c %-*s ", flag, SUMMARY_WIDTH, summary);
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if (from)
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fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
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else
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fputs(prettify_refname(to->name), stderr);
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if (msg) {
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fputs(" (", stderr);
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fputs(msg, stderr);
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fputc(')', stderr);
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}
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fputc('\n', stderr);
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}
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static const char *status_abbrev(unsigned char sha1[20])
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{
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return find_unique_abbrev(sha1, DEFAULT_ABBREV);
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}
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static void print_ok_ref_status(struct ref *ref)
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{
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if (ref->deletion)
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print_ref_status('-', "[deleted]", ref, NULL, NULL);
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else if (is_null_sha1(ref->old_sha1))
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print_ref_status('*',
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(!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
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"[new branch]"),
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ref, ref->peer_ref, NULL);
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else {
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char quickref[84];
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char type;
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const char *msg;
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strcpy(quickref, status_abbrev(ref->old_sha1));
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if (ref->nonfastforward) {
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strcat(quickref, "...");
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type = '+';
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msg = "forced update";
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} else {
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strcat(quickref, "..");
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type = ' ';
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msg = NULL;
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}
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strcat(quickref, status_abbrev(ref->new_sha1));
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print_ref_status(type, quickref, ref, ref->peer_ref, msg);
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}
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}
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static int print_one_push_status(struct ref *ref, const char *dest, int count)
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{
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if (!count)
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fprintf(stderr, "To %s\n", dest);
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switch(ref->status) {
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case REF_STATUS_NONE:
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print_ref_status('X', "[no match]", ref, NULL, NULL);
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break;
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case REF_STATUS_REJECT_NODELETE:
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print_ref_status('!', "[rejected]", ref, NULL,
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"remote does not support deleting refs");
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break;
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case REF_STATUS_UPTODATE:
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print_ref_status('=', "[up to date]", ref,
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ref->peer_ref, NULL);
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break;
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case REF_STATUS_REJECT_NONFASTFORWARD:
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print_ref_status('!', "[rejected]", ref, ref->peer_ref,
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"non-fast-forward");
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break;
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case REF_STATUS_REMOTE_REJECT:
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print_ref_status('!', "[remote rejected]", ref,
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ref->deletion ? NULL : ref->peer_ref,
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ref->remote_status);
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break;
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case REF_STATUS_EXPECTING_REPORT:
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print_ref_status('!', "[remote failure]", ref,
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ref->deletion ? NULL : ref->peer_ref,
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"remote failed to report status");
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break;
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case REF_STATUS_OK:
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print_ok_ref_status(ref);
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break;
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}
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return 1;
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}
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static void print_push_status(const char *dest, struct ref *refs)
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{
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struct ref *ref;
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int n = 0;
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if (args.verbose) {
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for (ref = refs; ref; ref = ref->next)
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if (ref->status == REF_STATUS_UPTODATE)
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n += print_one_push_status(ref, dest, n);
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}
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for (ref = refs; ref; ref = ref->next)
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if (ref->status == REF_STATUS_OK)
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n += print_one_push_status(ref, dest, n);
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for (ref = refs; ref; ref = ref->next) {
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if (ref->status != REF_STATUS_NONE &&
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ref->status != REF_STATUS_UPTODATE &&
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ref->status != REF_STATUS_OK)
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n += print_one_push_status(ref, dest, n);
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}
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}
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static int refs_pushed(struct ref *ref)
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{
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for (; ref; ref = ref->next) {
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switch(ref->status) {
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case REF_STATUS_NONE:
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case REF_STATUS_UPTODATE:
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break;
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default:
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return 1;
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}
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}
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return 0;
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}
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static void print_helper_status(struct ref *ref)
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{
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struct strbuf buf = STRBUF_INIT;
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for (; ref; ref = ref->next) {
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const char *msg = NULL;
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const char *res;
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switch(ref->status) {
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case REF_STATUS_NONE:
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res = "error";
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msg = "no match";
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break;
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case REF_STATUS_OK:
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res = "ok";
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break;
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case REF_STATUS_UPTODATE:
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res = "ok";
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msg = "up to date";
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break;
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case REF_STATUS_REJECT_NONFASTFORWARD:
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res = "error";
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msg = "non-fast forward";
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break;
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case REF_STATUS_REJECT_NODELETE:
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case REF_STATUS_REMOTE_REJECT:
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res = "error";
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break;
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case REF_STATUS_EXPECTING_REPORT:
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default:
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continue;
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}
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strbuf_reset(&buf);
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strbuf_addf(&buf, "%s %s", res, ref->name);
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if (ref->remote_status)
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msg = ref->remote_status;
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if (msg) {
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strbuf_addch(&buf, ' ');
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quote_two_c_style(&buf, "", msg, 0);
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}
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strbuf_addch(&buf, '\n');
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safe_write(1, buf.buf, buf.len);
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}
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strbuf_release(&buf);
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}
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int send_pack(struct send_pack_args *args,
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int fd[], struct child_process *conn,
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struct ref *remote_refs,
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struct extra_have_objects *extra_have)
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{
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int in = fd[0];
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int out = fd[1];
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struct strbuf req_buf = STRBUF_INIT;
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struct ref *ref;
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int new_refs;
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int ask_for_status_report = 0;
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int allow_deleting_refs = 0;
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int expect_status_report = 0;
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int ret;
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/* Does the other end support the reporting? */
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if (server_supports("report-status"))
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ask_for_status_report = 1;
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if (server_supports("delete-refs"))
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allow_deleting_refs = 1;
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if (server_supports("ofs-delta"))
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args->use_ofs_delta = 1;
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if (!remote_refs) {
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fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
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"Perhaps you should specify a branch such as 'master'.\n");
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return 0;
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}
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/*
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* Finally, tell the other end!
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*/
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new_refs = 0;
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for (ref = remote_refs; ref; ref = ref->next) {
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if (!ref->peer_ref && !args->send_mirror)
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continue;
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/* Check for statuses set by set_ref_status_for_push() */
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switch (ref->status) {
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case REF_STATUS_REJECT_NONFASTFORWARD:
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case REF_STATUS_UPTODATE:
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continue;
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default:
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; /* do nothing */
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}
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if (ref->deletion && !allow_deleting_refs) {
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ref->status = REF_STATUS_REJECT_NODELETE;
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continue;
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}
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if (!ref->deletion)
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new_refs++;
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if (!args->dry_run) {
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char *old_hex = sha1_to_hex(ref->old_sha1);
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char *new_hex = sha1_to_hex(ref->new_sha1);
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if (ask_for_status_report) {
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packet_buf_write(&req_buf, "%s %s %s%c%s",
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old_hex, new_hex, ref->name, 0,
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"report-status");
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ask_for_status_report = 0;
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expect_status_report = 1;
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}
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else
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packet_buf_write(&req_buf, "%s %s %s",
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old_hex, new_hex, ref->name);
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}
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ref->status = expect_status_report ?
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REF_STATUS_EXPECTING_REPORT :
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REF_STATUS_OK;
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}
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if (args->stateless_rpc) {
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if (!args->dry_run) {
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packet_buf_flush(&req_buf);
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send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
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}
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} else {
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safe_write(out, req_buf.buf, req_buf.len);
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packet_flush(out);
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}
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strbuf_release(&req_buf);
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if (new_refs && !args->dry_run) {
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if (pack_objects(out, remote_refs, extra_have, args) < 0) {
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for (ref = remote_refs; ref; ref = ref->next)
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ref->status = REF_STATUS_NONE;
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return -1;
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}
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}
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if (args->stateless_rpc && !args->dry_run)
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packet_flush(out);
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if (expect_status_report)
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ret = receive_status(in, remote_refs);
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else
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ret = 0;
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if (args->stateless_rpc)
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packet_flush(out);
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if (ret < 0)
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return ret;
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for (ref = remote_refs; ref; ref = ref->next) {
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switch (ref->status) {
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case REF_STATUS_NONE:
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case REF_STATUS_UPTODATE:
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case REF_STATUS_OK:
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break;
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default:
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return -1;
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}
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}
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return 0;
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}
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static void verify_remote_names(int nr_heads, const char **heads)
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{
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int i;
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for (i = 0; i < nr_heads; i++) {
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const char *local = heads[i];
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const char *remote = strrchr(heads[i], ':');
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if (*local == '+')
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local++;
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/* A matching refspec is okay. */
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if (remote == local && remote[1] == '\0')
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continue;
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remote = remote ? (remote + 1) : local;
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switch (check_ref_format(remote)) {
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case 0: /* ok */
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case CHECK_REF_FORMAT_ONELEVEL:
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/* ok but a single level -- that is fine for
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* a match pattern.
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*/
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case CHECK_REF_FORMAT_WILDCARD:
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/* ok but ends with a pattern-match character */
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continue;
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|
}
|
|
die("remote part of refspec is not a valid name in %s",
|
|
heads[i]);
|
|
}
|
|
}
|
|
|
|
int cmd_send_pack(int argc, const char **argv, const char *prefix)
|
|
{
|
|
int i, nr_refspecs = 0;
|
|
const char **refspecs = NULL;
|
|
const char *remote_name = NULL;
|
|
struct remote *remote = NULL;
|
|
const char *dest = NULL;
|
|
int fd[2];
|
|
struct child_process *conn;
|
|
struct extra_have_objects extra_have;
|
|
struct ref *remote_refs, *local_refs;
|
|
int ret;
|
|
int helper_status = 0;
|
|
int send_all = 0;
|
|
const char *receivepack = "git-receive-pack";
|
|
int flags;
|
|
|
|
argv++;
|
|
for (i = 1; i < argc; i++, argv++) {
|
|
const char *arg = *argv;
|
|
|
|
if (*arg == '-') {
|
|
if (!prefixcmp(arg, "--receive-pack=")) {
|
|
receivepack = arg + 15;
|
|
continue;
|
|
}
|
|
if (!prefixcmp(arg, "--exec=")) {
|
|
receivepack = arg + 7;
|
|
continue;
|
|
}
|
|
if (!prefixcmp(arg, "--remote=")) {
|
|
remote_name = arg + 9;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--all")) {
|
|
send_all = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--dry-run")) {
|
|
args.dry_run = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--mirror")) {
|
|
args.send_mirror = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--force")) {
|
|
args.force_update = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--verbose")) {
|
|
args.verbose = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--thin")) {
|
|
args.use_thin_pack = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--stateless-rpc")) {
|
|
args.stateless_rpc = 1;
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--helper-status")) {
|
|
helper_status = 1;
|
|
continue;
|
|
}
|
|
usage(send_pack_usage);
|
|
}
|
|
if (!dest) {
|
|
dest = arg;
|
|
continue;
|
|
}
|
|
refspecs = (const char **) argv;
|
|
nr_refspecs = argc - i;
|
|
break;
|
|
}
|
|
if (!dest)
|
|
usage(send_pack_usage);
|
|
/*
|
|
* --all and --mirror are incompatible; neither makes sense
|
|
* with any refspecs.
|
|
*/
|
|
if ((refspecs && (send_all || args.send_mirror)) ||
|
|
(send_all && args.send_mirror))
|
|
usage(send_pack_usage);
|
|
|
|
if (remote_name) {
|
|
remote = remote_get(remote_name);
|
|
if (!remote_has_url(remote, dest)) {
|
|
die("Destination %s is not a uri for %s",
|
|
dest, remote_name);
|
|
}
|
|
}
|
|
|
|
if (args.stateless_rpc) {
|
|
conn = NULL;
|
|
fd[0] = 0;
|
|
fd[1] = 1;
|
|
} else {
|
|
conn = git_connect(fd, dest, receivepack,
|
|
args.verbose ? CONNECT_VERBOSE : 0);
|
|
}
|
|
|
|
memset(&extra_have, 0, sizeof(extra_have));
|
|
|
|
get_remote_heads(fd[0], &remote_refs, 0, NULL, REF_NORMAL,
|
|
&extra_have);
|
|
|
|
verify_remote_names(nr_refspecs, refspecs);
|
|
|
|
local_refs = get_local_heads();
|
|
|
|
flags = MATCH_REFS_NONE;
|
|
|
|
if (send_all)
|
|
flags |= MATCH_REFS_ALL;
|
|
if (args.send_mirror)
|
|
flags |= MATCH_REFS_MIRROR;
|
|
|
|
/* match them up */
|
|
if (match_refs(local_refs, &remote_refs, nr_refspecs, refspecs, flags))
|
|
return -1;
|
|
|
|
set_ref_status_for_push(remote_refs, args.send_mirror,
|
|
args.force_update);
|
|
|
|
ret = send_pack(&args, fd, conn, remote_refs, &extra_have);
|
|
|
|
if (helper_status)
|
|
print_helper_status(remote_refs);
|
|
|
|
close(fd[1]);
|
|
close(fd[0]);
|
|
|
|
ret |= finish_connect(conn);
|
|
|
|
if (!helper_status)
|
|
print_push_status(dest, remote_refs);
|
|
|
|
if (!args.dry_run && remote) {
|
|
struct ref *ref;
|
|
for (ref = remote_refs; ref; ref = ref->next)
|
|
update_tracking_ref(remote, ref);
|
|
}
|
|
|
|
if (!ret && !refs_pushed(remote_refs))
|
|
fprintf(stderr, "Everything up-to-date\n");
|
|
|
|
return ret;
|
|
}
|