6 static const char send_pack_usage
[] =
7 "git-send-pack [--all] [--exec=git-receive-pack] <remote> [<head>...]\n"
8 " --all and explicit <head> specification are mutually exclusive.";
9 static const char *exec
= "git-receive-pack";
10 static int send_all
= 0;
11 static int force_update
= 0;
13 static int is_zero_sha1(const unsigned char *sha1
)
17 for (i
= 0; i
< 20; i
++) {
24 static void exec_pack_objects(void)
26 static char *args
[] = {
31 execvp("git-pack-objects", args
);
32 die("git-pack-objects exec failed (%s)", strerror(errno
));
35 static void exec_rev_list(struct ref
*refs
)
37 static char *args
[1000];
40 args
[i
++] = "git-rev-list"; /* 0 */
41 args
[i
++] = "--objects"; /* 1 */
43 char *buf
= malloc(100);
45 die("git-rev-list environment overflow");
46 if (!is_zero_sha1(refs
->old_sha1
) &&
47 has_sha1_file(refs
->old_sha1
)) {
49 snprintf(buf
, 50, "^%s", sha1_to_hex(refs
->old_sha1
));
52 if (!is_zero_sha1(refs
->new_sha1
)) {
54 snprintf(buf
, 50, "%s", sha1_to_hex(refs
->new_sha1
));
59 execvp("git-rev-list", args
);
60 die("git-rev-list exec failed (%s)", strerror(errno
));
63 static void rev_list(int fd
, struct ref
*refs
)
66 pid_t pack_objects_pid
;
68 if (pipe(pipe_fd
) < 0)
69 die("rev-list setup: pipe failed");
70 pack_objects_pid
= fork();
71 if (!pack_objects_pid
) {
78 die("pack-objects setup failed");
80 if (pack_objects_pid
< 0)
81 die("pack-objects fork failed");
89 static int pack_objects(int fd
, struct ref
*refs
)
93 rev_list_pid
= fork();
96 die("rev-list setup failed");
99 die("rev-list fork failed");
101 * We don't wait for the rev-list pipeline in the parent:
102 * we end up waiting for the other end instead
107 static int ref_newer(const unsigned char *new_sha1
, const unsigned char *old_sha1
)
109 struct commit
*new, *old
;
110 struct commit_list
*list
;
114 old
= lookup_commit_reference(old_sha1
);
117 new = lookup_commit_reference(new_sha1
);
120 if (parse_commit(new) < 0)
123 commit_list_insert(new, &list
);
125 new = pop_most_recent_commit(&list
, 1);
132 static struct ref
*local_refs
, **local_tail
;
133 static struct ref
*remote_refs
, **remote_tail
;
135 static int one_local_ref(const char *refname
, const unsigned char *sha1
)
138 int len
= strlen(refname
) + 1;
139 ref
= xcalloc(1, sizeof(*ref
) + len
);
140 memcpy(ref
->new_sha1
, sha1
, 20);
141 memcpy(ref
->name
, refname
, len
);
143 local_tail
= &ref
->next
;
147 static void get_local_heads(void)
149 local_tail
= &local_refs
;
150 for_each_ref(one_local_ref
);
153 static int send_pack(int in
, int out
, int nr_refspec
, char **refspec
)
158 /* No funny business with the matcher */
159 remote_tail
= get_remote_heads(in
, &remote_refs
, 0, NULL
);
164 remote_tail
= &remote_refs
;
165 if (match_refs(local_refs
, remote_refs
, &remote_tail
,
166 nr_refspec
, refspec
, send_all
))
169 * Finally, tell the other end!
172 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
173 char old_hex
[60], *new_hex
;
176 if (!is_zero_sha1(ref
->old_sha1
)) {
177 if (!has_sha1_file(ref
->old_sha1
)) {
178 error("remote '%s' object %s does not "
180 ref
->name
, sha1_to_hex(ref
->old_sha1
));
183 if (!ref_newer(ref
->peer_ref
->new_sha1
,
185 error("remote ref '%s' is not a strict "
186 "subset of local ref '%s'.", ref
->name
,
187 ref
->peer_ref
->name
);
191 if (!memcmp(ref
->old_sha1
, ref
->peer_ref
->new_sha1
, 20)) {
192 fprintf(stderr
, "'%s': up-to-date\n", ref
->name
);
195 memcpy(ref
->new_sha1
, ref
->peer_ref
->new_sha1
, 20);
196 if (is_zero_sha1(ref
->new_sha1
)) {
197 error("cannot happen anymore");
201 strcpy(old_hex
, sha1_to_hex(ref
->old_sha1
));
202 new_hex
= sha1_to_hex(ref
->new_sha1
);
203 packet_write(out
, "%s %s %s", old_hex
, new_hex
, ref
->name
);
204 fprintf(stderr
, "updating '%s'", ref
->name
);
205 if (strcmp(ref
->name
, ref
->peer_ref
->name
))
206 fprintf(stderr
, " using '%s'", ref
->peer_ref
->name
);
207 fprintf(stderr
, "\n from %s\n to %s\n", old_hex
, new_hex
);
212 pack_objects(out
, remote_refs
);
218 int main(int argc
, char **argv
)
227 for (i
= 1; i
< argc
; i
++, argv
++) {
231 if (!strncmp(arg
, "--exec=", 7)) {
235 if (!strcmp(arg
, "--all")) {
239 if (!strcmp(arg
, "--force")) {
243 usage(send_pack_usage
);
254 usage(send_pack_usage
);
255 if (heads
&& send_all
)
256 usage(send_pack_usage
);
257 pid
= git_connect(fd
, dest
, exec
);
260 ret
= send_pack(fd
[0], fd
[1], nr_heads
, heads
);