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authorLinus Torvalds <torvalds@linux-foundation.org>2010-02-22 16:42:18 (GMT)
committerJunio C Hamano <gitster@pobox.com>2010-02-22 22:29:41 (GMT)
commit81b50f3ce40bfdd66e5d967bf82be001039a9a98 (patch)
tree7e86bb81e83c9fad73dcbdaa0ef33038137b4274 /builtin/send-pack.c
parent241b9254e1c8ff071d8054f8b6fbe1883b389d69 (diff)
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Move 'builtin-*' into a 'builtin/' subdirectory
This shrinks the top-level directory a bit, and makes it much more pleasant to use auto-completion on the thing. Instead of [torvalds@nehalem git]$ em buil<tab> Display all 180 possibilities? (y or n) [torvalds@nehalem git]$ em builtin-sh builtin-shortlog.c builtin-show-branch.c builtin-show-ref.c builtin-shortlog.o builtin-show-branch.o builtin-show-ref.o [torvalds@nehalem git]$ em builtin-shor<tab> builtin-shortlog.c builtin-shortlog.o [torvalds@nehalem git]$ em builtin-shortlog.c you get [torvalds@nehalem git]$ em buil<tab> [type] builtin/ builtin.h [torvalds@nehalem git]$ em builtin [auto-completes to] [torvalds@nehalem git]$ em builtin/sh<tab> [type] shortlog.c shortlog.o show-branch.c show-branch.o show-ref.c show-ref.o [torvalds@nehalem git]$ em builtin/sho [auto-completes to] [torvalds@nehalem git]$ em builtin/shor<tab> [type] shortlog.c shortlog.o [torvalds@nehalem git]$ em builtin/shortlog.c which doesn't seem all that different, but not having that annoying break in "Display all 180 possibilities?" is quite a relief. NOTE! If you do this in a clean tree (no object files etc), or using an editor that has auto-completion rules that ignores '*.o' files, you won't see that annoying 'Display all 180 possibilities?' message - it will just show the choices instead. I think bash has some cut-off around 100 choices or something. So the reason I see this is that I'm using an odd editory, and thus don't have the rules to cut down on auto-completion. But you can simulate that by using 'ls' instead, or something similar. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/send-pack.c')
-rw-r--r--builtin/send-pack.c706
1 files changed, 706 insertions, 0 deletions
diff --git a/builtin/send-pack.c b/builtin/send-pack.c
new file mode 100644
index 0000000..2183a47
--- /dev/null
+++ b/builtin/send-pack.c
@@ -0,0 +1,706 @@
+#include "cache.h"
+#include "commit.h"
+#include "refs.h"
+#include "pkt-line.h"
+#include "sideband.h"
+#include "run-command.h"
+#include "remote.h"
+#include "send-pack.h"
+#include "quote.h"
+
+static const char send_pack_usage[] =
+"git send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
+" --all and explicit <ref> specification are mutually exclusive.";
+
+static struct send_pack_args args;
+
+static int feed_object(const unsigned char *sha1, int fd, int negative)
+{
+ char buf[42];
+
+ if (negative && !has_sha1_file(sha1))
+ return 1;
+
+ memcpy(buf + negative, sha1_to_hex(sha1), 40);
+ if (negative)
+ buf[0] = '^';
+ buf[40 + negative] = '\n';
+ return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs");
+}
+
+/*
+ * Make a pack stream and spit it out into file descriptor fd
+ */
+static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args)
+{
+ /*
+ * The child becomes pack-objects --revs; we feed
+ * the revision parameters to it via its stdin and
+ * let its stdout go back to the other end.
+ */
+ const char *argv[] = {
+ "pack-objects",
+ "--all-progress-implied",
+ "--revs",
+ "--stdout",
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ };
+ struct child_process po;
+ int i;
+
+ i = 4;
+ if (args->use_thin_pack)
+ argv[i++] = "--thin";
+ if (args->use_ofs_delta)
+ argv[i++] = "--delta-base-offset";
+ if (args->quiet)
+ argv[i++] = "-q";
+ memset(&po, 0, sizeof(po));
+ po.argv = argv;
+ po.in = -1;
+ po.out = args->stateless_rpc ? -1 : fd;
+ po.git_cmd = 1;
+ if (start_command(&po))
+ die_errno("git pack-objects failed");
+
+ /*
+ * We feed the pack-objects we just spawned with revision
+ * parameters by writing to the pipe.
+ */
+ for (i = 0; i < extra->nr; i++)
+ if (!feed_object(extra->array[i], po.in, 1))
+ break;
+
+ while (refs) {
+ if (!is_null_sha1(refs->old_sha1) &&
+ !feed_object(refs->old_sha1, po.in, 1))
+ break;
+ if (!is_null_sha1(refs->new_sha1) &&
+ !feed_object(refs->new_sha1, po.in, 0))
+ break;
+ refs = refs->next;
+ }
+
+ close(po.in);
+
+ if (args->stateless_rpc) {
+ char *buf = xmalloc(LARGE_PACKET_MAX);
+ while (1) {
+ ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
+ if (n <= 0)
+ break;
+ send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
+ }
+ free(buf);
+ close(po.out);
+ po.out = -1;
+ }
+
+ if (finish_command(&po))
+ return error("pack-objects died with strange error");
+ return 0;
+}
+
+static int receive_status(int in, struct ref *refs)
+{
+ struct ref *hint;
+ char line[1000];
+ int ret = 0;
+ int len = packet_read_line(in, line, sizeof(line));
+ if (len < 10 || memcmp(line, "unpack ", 7))
+ return error("did not receive remote status");
+ if (memcmp(line, "unpack ok\n", 10)) {
+ char *p = line + strlen(line) - 1;
+ if (*p == '\n')
+ *p = '\0';
+ error("unpack failed: %s", line + 7);
+ ret = -1;
+ }
+ hint = NULL;
+ while (1) {
+ char *refname;
+ char *msg;
+ len = packet_read_line(in, line, sizeof(line));
+ if (!len)
+ break;
+ if (len < 3 ||
+ (memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) {
+ fprintf(stderr, "protocol error: %s\n", line);
+ ret = -1;
+ break;
+ }
+
+ line[strlen(line)-1] = '\0';
+ refname = line + 3;
+ msg = strchr(refname, ' ');
+ if (msg)
+ *msg++ = '\0';
+
+ /* first try searching at our hint, falling back to all refs */
+ if (hint)
+ hint = find_ref_by_name(hint, refname);
+ if (!hint)
+ hint = find_ref_by_name(refs, refname);
+ if (!hint) {
+ warning("remote reported status on unknown ref: %s",
+ refname);
+ continue;
+ }
+ if (hint->status != REF_STATUS_EXPECTING_REPORT) {
+ warning("remote reported status on unexpected ref: %s",
+ refname);
+ continue;
+ }
+
+ if (line[0] == 'o' && line[1] == 'k')
+ hint->status = REF_STATUS_OK;
+ else {
+ hint->status = REF_STATUS_REMOTE_REJECT;
+ ret = -1;
+ }
+ if (msg)
+ hint->remote_status = xstrdup(msg);
+ /* start our next search from the next ref */
+ hint = hint->next;
+ }
+ return ret;
+}
+
+static void update_tracking_ref(struct remote *remote, struct ref *ref)
+{
+ struct refspec rs;
+
+ if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
+ return;
+
+ rs.src = ref->name;
+ rs.dst = NULL;
+
+ if (!remote_find_tracking(remote, &rs)) {
+ if (args.verbose)
+ fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
+ if (ref->deletion) {
+ delete_ref(rs.dst, NULL, 0);
+ } else
+ update_ref("update by push", rs.dst,
+ ref->new_sha1, NULL, 0, 0);
+ free(rs.dst);
+ }
+}
+
+#define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
+
+static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg)
+{
+ fprintf(stderr, " %c %-*s ", flag, SUMMARY_WIDTH, summary);
+ if (from)
+ fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
+ else
+ fputs(prettify_refname(to->name), stderr);
+ if (msg) {
+ fputs(" (", stderr);
+ fputs(msg, stderr);
+ fputc(')', stderr);
+ }
+ fputc('\n', stderr);
+}
+
+static const char *status_abbrev(unsigned char sha1[20])
+{
+ return find_unique_abbrev(sha1, DEFAULT_ABBREV);
+}
+
+static void print_ok_ref_status(struct ref *ref)
+{
+ if (ref->deletion)
+ print_ref_status('-', "[deleted]", ref, NULL, NULL);
+ else if (is_null_sha1(ref->old_sha1))
+ print_ref_status('*',
+ (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
+ "[new branch]"),
+ ref, ref->peer_ref, NULL);
+ else {
+ char quickref[84];
+ char type;
+ const char *msg;
+
+ strcpy(quickref, status_abbrev(ref->old_sha1));
+ if (ref->nonfastforward) {
+ strcat(quickref, "...");
+ type = '+';
+ msg = "forced update";
+ } else {
+ strcat(quickref, "..");
+ type = ' ';
+ msg = NULL;
+ }
+ strcat(quickref, status_abbrev(ref->new_sha1));
+
+ print_ref_status(type, quickref, ref, ref->peer_ref, msg);
+ }
+}
+
+static int print_one_push_status(struct ref *ref, const char *dest, int count)
+{
+ if (!count)
+ fprintf(stderr, "To %s\n", dest);
+
+ switch(ref->status) {
+ case REF_STATUS_NONE:
+ print_ref_status('X', "[no match]", ref, NULL, NULL);
+ break;
+ case REF_STATUS_REJECT_NODELETE:
+ print_ref_status('!', "[rejected]", ref, NULL,
+ "remote does not support deleting refs");
+ break;
+ case REF_STATUS_UPTODATE:
+ print_ref_status('=', "[up to date]", ref,
+ ref->peer_ref, NULL);
+ break;
+ case REF_STATUS_REJECT_NONFASTFORWARD:
+ print_ref_status('!', "[rejected]", ref, ref->peer_ref,
+ "non-fast-forward");
+ break;
+ case REF_STATUS_REMOTE_REJECT:
+ print_ref_status('!', "[remote rejected]", ref,
+ ref->deletion ? NULL : ref->peer_ref,
+ ref->remote_status);
+ break;
+ case REF_STATUS_EXPECTING_REPORT:
+ print_ref_status('!', "[remote failure]", ref,
+ ref->deletion ? NULL : ref->peer_ref,
+ "remote failed to report status");
+ break;
+ case REF_STATUS_OK:
+ print_ok_ref_status(ref);
+ break;
+ }
+
+ return 1;
+}
+
+static void print_push_status(const char *dest, struct ref *refs)
+{
+ struct ref *ref;
+ int n = 0;
+
+ if (args.verbose) {
+ for (ref = refs; ref; ref = ref->next)
+ if (ref->status == REF_STATUS_UPTODATE)
+ n += print_one_push_status(ref, dest, n);
+ }
+
+ for (ref = refs; ref; ref = ref->next)
+ if (ref->status == REF_STATUS_OK)
+ n += print_one_push_status(ref, dest, n);
+
+ for (ref = refs; ref; ref = ref->next) {
+ if (ref->status != REF_STATUS_NONE &&
+ ref->status != REF_STATUS_UPTODATE &&
+ ref->status != REF_STATUS_OK)
+ n += print_one_push_status(ref, dest, n);
+ }
+}
+
+static int refs_pushed(struct ref *ref)
+{
+ for (; ref; ref = ref->next) {
+ switch(ref->status) {
+ case REF_STATUS_NONE:
+ case REF_STATUS_UPTODATE:
+ break;
+ default:
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static void print_helper_status(struct ref *ref)
+{
+ struct strbuf buf = STRBUF_INIT;
+
+ for (; ref; ref = ref->next) {
+ const char *msg = NULL;
+ const char *res;
+
+ switch(ref->status) {
+ case REF_STATUS_NONE:
+ res = "error";
+ msg = "no match";
+ break;
+
+ case REF_STATUS_OK:
+ res = "ok";
+ break;
+
+ case REF_STATUS_UPTODATE:
+ res = "ok";
+ msg = "up to date";
+ break;
+
+ case REF_STATUS_REJECT_NONFASTFORWARD:
+ res = "error";
+ msg = "non-fast forward";
+ break;
+
+ case REF_STATUS_REJECT_NODELETE:
+ case REF_STATUS_REMOTE_REJECT:
+ res = "error";
+ break;
+
+ case REF_STATUS_EXPECTING_REPORT:
+ default:
+ continue;
+ }
+
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "%s %s", res, ref->name);
+ if (ref->remote_status)
+ msg = ref->remote_status;
+ if (msg) {
+ strbuf_addch(&buf, ' ');
+ quote_two_c_style(&buf, "", msg, 0);
+ }
+ strbuf_addch(&buf, '\n');
+
+ safe_write(1, buf.buf, buf.len);
+ }
+ strbuf_release(&buf);
+}
+
+static int sideband_demux(int in, int out, void *data)
+{
+ int *fd = data;
+ int ret = recv_sideband("send-pack", fd[0], out);
+ close(out);
+ return ret;
+}
+
+int send_pack(struct send_pack_args *args,
+ int fd[], struct child_process *conn,
+ struct ref *remote_refs,
+ struct extra_have_objects *extra_have)
+{
+ int in = fd[0];
+ int out = fd[1];
+ struct strbuf req_buf = STRBUF_INIT;
+ struct ref *ref;
+ int new_refs;
+ int allow_deleting_refs = 0;
+ int status_report = 0;
+ int use_sideband = 0;
+ unsigned cmds_sent = 0;
+ int ret;
+ struct async demux;
+
+ /* Does the other end support the reporting? */
+ if (server_supports("report-status"))
+ status_report = 1;
+ if (server_supports("delete-refs"))
+ allow_deleting_refs = 1;
+ if (server_supports("ofs-delta"))
+ args->use_ofs_delta = 1;
+ if (server_supports("side-band-64k"))
+ use_sideband = 1;
+
+ if (!remote_refs) {
+ fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
+ "Perhaps you should specify a branch such as 'master'.\n");
+ return 0;
+ }
+
+ /*
+ * Finally, tell the other end!
+ */
+ new_refs = 0;
+ for (ref = remote_refs; ref; ref = ref->next) {
+ if (!ref->peer_ref && !args->send_mirror)
+ continue;
+
+ /* Check for statuses set by set_ref_status_for_push() */
+ switch (ref->status) {
+ case REF_STATUS_REJECT_NONFASTFORWARD:
+ case REF_STATUS_UPTODATE:
+ continue;
+ default:
+ ; /* do nothing */
+ }
+
+ if (ref->deletion && !allow_deleting_refs) {
+ ref->status = REF_STATUS_REJECT_NODELETE;
+ continue;
+ }
+
+ if (!ref->deletion)
+ new_refs++;
+
+ if (args->dry_run) {
+ ref->status = REF_STATUS_OK;
+ } else {
+ char *old_hex = sha1_to_hex(ref->old_sha1);
+ char *new_hex = sha1_to_hex(ref->new_sha1);
+
+ if (!cmds_sent && (status_report || use_sideband)) {
+ packet_buf_write(&req_buf, "%s %s %s%c%s%s",
+ old_hex, new_hex, ref->name, 0,
+ status_report ? " report-status" : "",
+ use_sideband ? " side-band-64k" : "");
+ }
+ else
+ packet_buf_write(&req_buf, "%s %s %s",
+ old_hex, new_hex, ref->name);
+ ref->status = status_report ?
+ REF_STATUS_EXPECTING_REPORT :
+ REF_STATUS_OK;
+ cmds_sent++;
+ }
+ }
+
+ if (args->stateless_rpc) {
+ if (!args->dry_run && cmds_sent) {
+ packet_buf_flush(&req_buf);
+ send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
+ }
+ } else {
+ safe_write(out, req_buf.buf, req_buf.len);
+ packet_flush(out);
+ }
+ strbuf_release(&req_buf);
+
+ if (use_sideband && cmds_sent) {
+ memset(&demux, 0, sizeof(demux));
+ demux.proc = sideband_demux;
+ demux.data = fd;
+ demux.out = -1;
+ if (start_async(&demux))
+ die("receive-pack: unable to fork off sideband demultiplexer");
+ in = demux.out;
+ }
+
+ if (new_refs && cmds_sent) {
+ if (pack_objects(out, remote_refs, extra_have, args) < 0) {
+ for (ref = remote_refs; ref; ref = ref->next)
+ ref->status = REF_STATUS_NONE;
+ if (use_sideband)
+ finish_async(&demux);
+ return -1;
+ }
+ }
+ if (args->stateless_rpc && cmds_sent)
+ packet_flush(out);
+
+ if (status_report && cmds_sent)
+ ret = receive_status(in, remote_refs);
+ else
+ ret = 0;
+ if (args->stateless_rpc)
+ packet_flush(out);
+
+ if (use_sideband && cmds_sent) {
+ if (finish_async(&demux)) {
+ error("error in sideband demultiplexer");
+ ret = -1;
+ }
+ close(demux.out);
+ }
+
+ if (ret < 0)
+ return ret;
+ for (ref = remote_refs; ref; ref = ref->next) {
+ switch (ref->status) {
+ case REF_STATUS_NONE:
+ case REF_STATUS_UPTODATE:
+ case REF_STATUS_OK:
+ break;
+ default:
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static void verify_remote_names(int nr_heads, const char **heads)
+{
+ int i;
+
+ for (i = 0; i < nr_heads; i++) {
+ const char *local = heads[i];
+ const char *remote = strrchr(heads[i], ':');
+
+ if (*local == '+')
+ local++;
+
+ /* A matching refspec is okay. */
+ if (remote == local && remote[1] == '\0')
+ continue;
+
+ remote = remote ? (remote + 1) : local;
+ switch (check_ref_format(remote)) {
+ case 0: /* ok */
+ case CHECK_REF_FORMAT_ONELEVEL:
+ /* ok but a single level -- that is fine for
+ * a match pattern.
+ */
+ case CHECK_REF_FORMAT_WILDCARD:
+ /* ok but ends with a pattern-match character */
+ continue;
+ }
+ 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;
+}