match-trees: use hashcpy to splice trees

[thirdparty/git.git] / run-command.c

diff --git a/run-command.c b/run-command.c
index 3c3b8814dfc5120681f44f7451a4018c7e84f60d..3db26b7b0e2ab9b6b615387b36a2cd6b64800e9e 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -380,7 +380,7 @@ static void child_err_spew(struct child_process *cmd, struct child_err *cerr)
        set_error_routine(old_errfn);
 }
 
-static void prepare_cmd(struct argv_array *out, const struct child_process *cmd)
+static int prepare_cmd(struct argv_array *out, const struct child_process *cmd)
 {
        if (!cmd->argv[0])
                BUG("command is empty");
@@ -403,16 +403,22 @@ static void prepare_cmd(struct argv_array *out, const struct child_process *cmd)
        /*
         * If there are no '/' characters in the command then perform a path
         * lookup and use the resolved path as the command to exec.  If there
-        * are no '/' characters or if the command wasn't found in the path,
-        * have exec attempt to invoke the command directly.
+        * are '/' characters, we have exec attempt to invoke the command
+        * directly.
         */
        if (!strchr(out->argv[1], '/')) {
                char *program = locate_in_PATH(out->argv[1]);
                if (program) {
                        free((char *)out->argv[1]);
                        out->argv[1] = program;
+               } else {
+                       argv_array_clear(out);
+                       errno = ENOENT;
+                       return -1;
                }
        }
+
+       return 0;
 }
 
 static char **prep_childenv(const char *const *deltaenv)
@@ -719,6 +725,14 @@ fail_pipe:
        struct child_err cerr;
        struct atfork_state as;
 
+       if (prepare_cmd(&argv, cmd) < 0) {
+               failed_errno = errno;
+               cmd->pid = -1;
+               if (!cmd->silent_exec_failure)
+                       error_errno("cannot run %s", cmd->argv[0]);
+               goto end_of_spawn;
+       }
+
        if (pipe(notify_pipe))
                notify_pipe[0] = notify_pipe[1] = -1;
 
@@ -729,7 +743,6 @@ fail_pipe:
                set_cloexec(null_fd);
        }
 
-       prepare_cmd(&argv, cmd);
        childenv = prep_childenv(cmd->env);
        atfork_prepare(&as);
 
@@ -857,6 +870,8 @@ fail_pipe:
        argv_array_clear(&argv);
        free(childenv);
 }
+end_of_spawn:
+
 #else
 {
        int fhin = 0, fhout = 1, fherr = 2;
@@ -1213,7 +1228,7 @@ int start_async(struct async *async)
        {
                int err = pthread_create(&async->tid, NULL, run_thread, async);
                if (err) {
-                       error_errno("cannot create thread");
+                       error(_("cannot create async thread: %s"), strerror(err));
                        goto error;
                }
        }