mirror of
https://github.com/git/git
synced 2024-08-28 12:09:19 +00:00
![Junio C Hamano](/assets/img/avatar_default.png)
Fetching from a shallow-cloned repository used to be forbidden, primarily because the codepaths involved were not carefully vetted and we did not bother supporting such usage. This attempts to allow object transfer out of a shallow-cloned repository in a controlled way (i.e. the receiver become a shallow repository with truncated history). * nd/shallow-clone: (31 commits) t5537: fix incorrect expectation in test case 10 shallow: remove unused code send-pack.c: mark a file-local function static git-clone.txt: remove shallow clone limitations prune: clean .git/shallow after pruning objects clone: use git protocol for cloning shallow repo locally send-pack: support pushing from a shallow clone via http receive-pack: support pushing to a shallow clone via http smart-http: support shallow fetch/clone remote-curl: pass ref SHA-1 to fetch-pack as well send-pack: support pushing to a shallow clone receive-pack: allow pushes that update .git/shallow connected.c: add new variant that runs with --shallow-file add GIT_SHALLOW_FILE to propagate --shallow-file to subprocesses receive/send-pack: support pushing from a shallow clone receive-pack: reorder some code in unpack() fetch: add --update-shallow to accept refs that update .git/shallow upload-pack: make sure deepening preserves shallow roots fetch: support fetching from a shallow repository clone: support remote shallow repository ...
281 lines
5.9 KiB
C
281 lines
5.9 KiB
C
#include "builtin.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 "connect.h"
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#include "send-pack.h"
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#include "quote.h"
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#include "transport.h"
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#include "version.h"
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#include "sha1-array.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 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_FETCH_FIRST:
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res = "error";
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msg = "fetch first";
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break;
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case REF_STATUS_REJECT_NEEDS_FORCE:
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res = "error";
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msg = "needs force";
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break;
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case REF_STATUS_REJECT_STALE:
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res = "error";
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msg = "stale info";
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break;
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case REF_STATUS_REJECT_ALREADY_EXISTS:
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res = "error";
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msg = "already exists";
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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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write_or_die(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 cmd_send_pack(int argc, const char **argv, const char *prefix)
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{
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int i, nr_refspecs = 0;
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const char **refspecs = NULL;
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const char *remote_name = NULL;
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struct remote *remote = NULL;
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const char *dest = NULL;
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int fd[2];
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struct child_process *conn;
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struct sha1_array extra_have = SHA1_ARRAY_INIT;
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struct sha1_array shallow = SHA1_ARRAY_INIT;
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struct ref *remote_refs, *local_refs;
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int ret;
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int helper_status = 0;
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int send_all = 0;
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const char *receivepack = "git-receive-pack";
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int flags;
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unsigned int reject_reasons;
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int progress = -1;
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struct push_cas_option cas = {0};
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argv++;
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for (i = 1; i < argc; i++, argv++) {
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const char *arg = *argv;
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if (*arg == '-') {
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if (starts_with(arg, "--receive-pack=")) {
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receivepack = arg + 15;
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continue;
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}
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if (starts_with(arg, "--exec=")) {
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receivepack = arg + 7;
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continue;
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}
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if (starts_with(arg, "--remote=")) {
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remote_name = arg + 9;
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continue;
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}
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if (!strcmp(arg, "--all")) {
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send_all = 1;
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continue;
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}
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if (!strcmp(arg, "--dry-run")) {
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args.dry_run = 1;
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continue;
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}
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if (!strcmp(arg, "--mirror")) {
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args.send_mirror = 1;
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continue;
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}
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if (!strcmp(arg, "--force")) {
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args.force_update = 1;
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continue;
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}
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if (!strcmp(arg, "--quiet")) {
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args.quiet = 1;
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continue;
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}
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if (!strcmp(arg, "--verbose")) {
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args.verbose = 1;
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continue;
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}
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if (!strcmp(arg, "--progress")) {
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progress = 1;
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continue;
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}
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if (!strcmp(arg, "--no-progress")) {
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progress = 0;
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continue;
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}
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if (!strcmp(arg, "--thin")) {
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args.use_thin_pack = 1;
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continue;
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}
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if (!strcmp(arg, "--stateless-rpc")) {
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args.stateless_rpc = 1;
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continue;
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}
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if (!strcmp(arg, "--helper-status")) {
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helper_status = 1;
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continue;
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}
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if (!strcmp(arg, "--" CAS_OPT_NAME)) {
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if (parse_push_cas_option(&cas, NULL, 0) < 0)
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exit(1);
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continue;
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}
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if (!strcmp(arg, "--no-" CAS_OPT_NAME)) {
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if (parse_push_cas_option(&cas, NULL, 1) < 0)
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exit(1);
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continue;
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}
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if (starts_with(arg, "--" CAS_OPT_NAME "=")) {
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if (parse_push_cas_option(&cas,
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strchr(arg, '=') + 1, 0) < 0)
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exit(1);
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continue;
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}
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usage(send_pack_usage);
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}
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if (!dest) {
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dest = arg;
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continue;
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}
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refspecs = (const char **) argv;
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nr_refspecs = argc - i;
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break;
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}
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if (!dest)
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usage(send_pack_usage);
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/*
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* --all and --mirror are incompatible; neither makes sense
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* with any refspecs.
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*/
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if ((refspecs && (send_all || args.send_mirror)) ||
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(send_all && args.send_mirror))
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usage(send_pack_usage);
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if (remote_name) {
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remote = remote_get(remote_name);
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if (!remote_has_url(remote, dest)) {
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die("Destination %s is not a uri for %s",
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dest, remote_name);
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}
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}
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if (progress == -1)
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progress = !args.quiet && isatty(2);
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args.progress = progress;
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if (args.stateless_rpc) {
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conn = NULL;
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fd[0] = 0;
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fd[1] = 1;
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} else {
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conn = git_connect(fd, dest, receivepack,
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args.verbose ? CONNECT_VERBOSE : 0);
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}
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get_remote_heads(fd[0], NULL, 0, &remote_refs, REF_NORMAL,
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&extra_have, &shallow);
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transport_verify_remote_names(nr_refspecs, refspecs);
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local_refs = get_local_heads();
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flags = MATCH_REFS_NONE;
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if (send_all)
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flags |= MATCH_REFS_ALL;
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if (args.send_mirror)
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flags |= MATCH_REFS_MIRROR;
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/* match them up */
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if (match_push_refs(local_refs, &remote_refs, nr_refspecs, refspecs, flags))
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return -1;
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if (!is_empty_cas(&cas))
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apply_push_cas(&cas, remote, remote_refs);
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set_ref_status_for_push(remote_refs, args.send_mirror,
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args.force_update);
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ret = send_pack(&args, fd, conn, remote_refs, &extra_have);
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if (helper_status)
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print_helper_status(remote_refs);
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close(fd[1]);
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close(fd[0]);
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ret |= finish_connect(conn);
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if (!helper_status)
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transport_print_push_status(dest, remote_refs, args.verbose, 0, &reject_reasons);
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if (!args.dry_run && remote) {
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struct ref *ref;
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for (ref = remote_refs; ref; ref = ref->next)
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transport_update_tracking_ref(remote, ref, args.verbose);
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}
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if (!ret && !transport_refs_pushed(remote_refs))
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fprintf(stderr, "Everything up-to-date\n");
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return ret;
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}
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