summaryrefslogtreecommitdiff
path: root/receive-pack.c
diff options
context:
space:
mode:
Diffstat (limited to 'receive-pack.c')
-rw-r--r--receive-pack.c96
1 files changed, 73 insertions, 23 deletions
diff --git a/receive-pack.c b/receive-pack.c
index b8d1270..d56898c 100644
--- a/receive-pack.c
+++ b/receive-pack.c
@@ -3,8 +3,10 @@
#include "refs.h"
#include "pkt-line.h"
#include "run-command.h"
+#include "exec_cmd.h"
#include "commit.h"
#include "object.h"
+#include <sys/wait.h>
static const char receive_pack_usage[] = "git-receive-pack <git-dir>";
@@ -251,12 +253,13 @@ static const char *parse_pack_header(struct pack_header *hdr)
return NULL;
}
+static const char *pack_lockfile;
+
static const char *unpack(void)
{
struct pack_header hdr;
const char *hdr_err;
char hdr_arg[38];
- int code;
hdr_err = parse_pack_header(&hdr);
if (hdr_err)
@@ -265,33 +268,13 @@ static const char *unpack(void)
ntohl(hdr.hdr_version), ntohl(hdr.hdr_entries));
if (ntohl(hdr.hdr_entries) < unpack_limit) {
+ int code;
const char *unpacker[3];
unpacker[0] = "unpack-objects";
unpacker[1] = hdr_arg;
unpacker[2] = NULL;
code = run_command_v_opt(1, unpacker, RUN_GIT_CMD);
- } else {
- const char *keeper[6];
- char my_host[255], keep_arg[128 + 255];
-
- if (gethostname(my_host, sizeof(my_host)))
- strcpy(my_host, "localhost");
- snprintf(keep_arg, sizeof(keep_arg),
- "--keep=receive-pack %i on %s",
- getpid(), my_host);
-
- keeper[0] = "index-pack";
- keeper[1] = "--stdin";
- keeper[2] = "--fix-thin";
- keeper[3] = hdr_arg;
- keeper[4] = keep_arg;
- keeper[5] = NULL;
- code = run_command_v_opt(1, keeper, RUN_GIT_CMD);
- if (!code)
- reprepare_packed_git();
- }
-
- switch (code) {
+ switch (code) {
case 0:
return NULL;
case -ERR_RUN_COMMAND_FORK:
@@ -308,6 +291,71 @@ static const char *unpack(void)
return "unpacker died strangely";
default:
return "unpacker exited with error code";
+ }
+ } else {
+ const char *keeper[6];
+ int fd[2], s, len, status;
+ pid_t pid;
+ char keep_arg[256];
+ char packname[46];
+
+ s = sprintf(keep_arg, "--keep=receive-pack %i on ", getpid());
+ if (gethostname(keep_arg + s, sizeof(keep_arg) - s))
+ strcpy(keep_arg + s, "localhost");
+
+ keeper[0] = "index-pack";
+ keeper[1] = "--stdin";
+ keeper[2] = "--fix-thin";
+ keeper[3] = hdr_arg;
+ keeper[4] = keep_arg;
+ keeper[5] = NULL;
+
+ if (pipe(fd) < 0)
+ return "index-pack pipe failed";
+ pid = fork();
+ if (pid < 0)
+ return "index-pack fork failed";
+ if (!pid) {
+ dup2(fd[1], 1);
+ close(fd[1]);
+ close(fd[0]);
+ execv_git_cmd(keeper);
+ die("execv of index-pack failed");
+ }
+ close(fd[1]);
+
+ /*
+ * The first thing we expects from index-pack's output
+ * is "pack\t%40s\n" or "keep\t%40s\n" (46 bytes) where
+ * %40s is the newly created pack SHA1 name. In the "keep"
+ * case, we need it to remove the corresponding .keep file
+ * later on. If we don't get that then tough luck with it.
+ */
+ for (len = 0;
+ len < 46 && (s = xread(fd[0], packname+len, 46-len)) > 0;
+ len += s);
+ close(fd[0]);
+ if (len == 46 && packname[45] == '\n' &&
+ memcmp(packname, "keep\t", 5) == 0) {
+ char path[PATH_MAX];
+ packname[45] = 0;
+ snprintf(path, sizeof(path), "%s/pack/pack-%s.keep",
+ get_object_directory(), packname + 5);
+ pack_lockfile = xstrdup(path);
+ }
+
+ /* Then wrap our index-pack process. */
+ while (waitpid(pid, &status, 0) < 0)
+ if (errno != EINTR)
+ return "waitpid failed";
+ if (WIFEXITED(status)) {
+ int code = WEXITSTATUS(status);
+ if (code)
+ return "index-pack exited with error code";
+ reprepare_packed_git();
+ return NULL;
+ }
+ return "index-pack abnormal exit";
}
}
@@ -363,6 +411,8 @@ int main(int argc, char **argv)
const char *unpack_status = unpack();
if (!unpack_status)
execute_commands();
+ if (pack_lockfile)
+ unlink(pack_lockfile);
if (report_status)
report(unpack_status);
}