Document git read-tree --trivial

diff --git a/receive-pack.c b/receive-pack.c
index 7cf58782e38b0d52c104921d938163f2ba2c343c..d3c422be58c5ee1af7e75cf4186bc9bbfb19ec30 100644 (file)
--- a/receive-pack.c
+++ b/receive-pack.c
@@ -209,7 +209,7 @@ static const char *update(struct command *cmd)
                return NULL; /* good */
        }
        else {
-               lock = lock_any_ref_for_update(name, old_sha1);
+               lock = lock_any_ref_for_update(name, old_sha1, 0);
                if (!lock) {
                        error("failed to lock %s", name);
                        return "failed to lock";
@@ -382,10 +382,10 @@ static const char *unpack(void)
                }
        } else {
                const char *keeper[6];
-               int fd[2], s, len, status;
-               pid_t pid;
+               int s, len, status;
                char keep_arg[256];
                char packname[46];
+               struct child_process ip;
 
                s = sprintf(keep_arg, "--keep=receive-pack %i on ", getpid());
                if (gethostname(keep_arg + s, sizeof(keep_arg) - s))
@@ -397,20 +397,12 @@ static const char *unpack(void)
                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)
+               memset(&ip, 0, sizeof(ip));
+               ip.argv = keeper;
+               ip.out = -1;
+               ip.git_cmd = 1;
+               if (start_command(&ip))
                        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
@@ -420,9 +412,8 @@ static const char *unpack(void)
                 * 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 < 46 && (s = xread(ip.out, 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];
@@ -432,14 +423,8 @@ static const char *unpack(void)
                        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";
+               status = finish_command(&ip);
+               if (!status) {
                        reprepare_packed_git();
                        return NULL;
                }