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upload-pack: split check_unreachable() in two, prep for get_reachable_list() 

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2016-06-12 17:54:07 +07:00 committed by Junio C Hamano
parent cdc37277f9
commit 2997178ee6
1 changed files with 38 additions and 18 deletions
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56
upload-pack.c
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@ -452,21 +452,24 @@ static int is_our_ref(struct object *o)
return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF);
}
static int has_unreachable(struct object_array *src)
/*
* on successful case, it's up to the caller to close cmd->out
*/
static int do_reachable_revlist(struct child_process *cmd,
struct object_array *src)
{
static const char *argv[] = {
"rev-list", "--stdin", NULL,
};
static struct child_process cmd = CHILD_PROCESS_INIT;
struct object *o;
char namebuf[42]; /* ^ + SHA-1 + LF */
int i;
cmd.argv = argv;
cmd.git_cmd = 1;
cmd.no_stderr = 1;
cmd.in = -1;
cmd.out = -1;
cmd->argv = argv;
cmd->git_cmd = 1;
cmd->no_stderr = 1;
cmd->in = -1;
cmd->out = -1;
/*
* If the next rev-list --stdin encounters an unknown commit,
@ -475,7 +478,7 @@ static int has_unreachable(struct object_array *src)
*/
sigchain_push(SIGPIPE, SIG_IGN);
if (start_command(&cmd))
if (start_command(cmd))
goto error;
namebuf[0] = '^';
@ -487,7 +490,7 @@ static int has_unreachable(struct object_array *src)
if (!is_our_ref(o))
continue;
memcpy(namebuf + 1, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ);
if (write_in_full(cmd.in, namebuf, 42) < 0)
if (write_in_full(cmd->in, namebuf, 42) < 0)
goto error;
}
namebuf[40] = '\n';
@ -496,17 +499,39 @@ static int has_unreachable(struct object_array *src)
if (is_our_ref(o))
continue;
memcpy(namebuf, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ);
if (write_in_full(cmd.in, namebuf, 41) < 0)
if (write_in_full(cmd->in, namebuf, 41) < 0)
goto error;
}
close(cmd.in);
cmd.in = -1;
close(cmd->in);
cmd->in = -1;
sigchain_pop(SIGPIPE);
return 0;
error:
sigchain_pop(SIGPIPE);
if (cmd->in >= 0)
close(cmd->in);
if (cmd->out >= 0)
close(cmd->out);
return -1;
}
static int has_unreachable(struct object_array *src)
{
struct child_process cmd = CHILD_PROCESS_INIT;
char buf[1];
int i;
if (do_reachable_revlist(&cmd, src) < 0)
return 1;
/*
* The commits out of the rev-list are not ancestors of
* our ref.
*/
i = read_in_full(cmd.out, namebuf, 1);
i = read_in_full(cmd.out, buf, 1);
if (i)
goto error;
close(cmd.out);
@ -520,16 +545,11 @@ static int has_unreachable(struct object_array *src)
if (finish_command(&cmd))
goto error;
sigchain_pop(SIGPIPE);
/* All the non-tip ones are ancestors of what we advertised */
return 0;
error:
sigchain_pop(SIGPIPE);
if (cmd.in >= 0)
close(cmd.in);
if (cmd.out >= 0)
close(cmd.out);
return 1;