gc: exit with status 128 on failure

A value of -1 returned from cmd_gc gets propagated to exit(),
resulting in an exit status of 255.  Use die instead for a clearer
error message and a controlled exit.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/gc.c b/builtin/gc.c
index d69fc4c0b017485a90efcc245f31edcff3b81702..95c8afd07bca53463eea6d9ce12ea36430405592 100644 (file)
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -438,10 +438,9 @@ static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
        return NULL;
 }
 
-static int report_last_gc_error(void)
+static void report_last_gc_error(void)
 {
        struct strbuf sb = STRBUF_INIT;
-       int ret = 0;
        ssize_t len;
        struct stat st;
        char *gc_log_path = git_pathdup("gc.log");
@@ -450,8 +449,7 @@ static int report_last_gc_error(void)
                if (errno == ENOENT)
                        goto done;
 
-               ret = error_errno(_("cannot stat '%s'"), gc_log_path);
-               goto done;
+               die_errno(_("cannot stat '%s'"), gc_log_path);
        }
 
        if (st.st_mtime < gc_log_expire_time)
@@ -459,9 +457,9 @@ static int report_last_gc_error(void)
 
        len = strbuf_read_file(&sb, gc_log_path, 0);
        if (len < 0)
-               ret = error_errno(_("cannot read '%s'"), gc_log_path);
+               die_errno(_("cannot read '%s'"), gc_log_path);
        else if (len > 0)
-               ret = error(_("The last gc run reported the following. "
+               die(_("The last gc run reported the following. "
                               "Please correct the root cause\n"
                               "and remove %s.\n"
                               "Automatic cleanup will not be performed "
@@ -471,20 +469,18 @@ static int report_last_gc_error(void)
        strbuf_release(&sb);
 done:
        free(gc_log_path);
-       return ret;
 }
 
-static int gc_before_repack(void)
+static void gc_before_repack(void)
 {
        if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
-               return error(FAILED_RUN, pack_refs_cmd.argv[0]);
+               die(FAILED_RUN, pack_refs_cmd.argv[0]);
 
        if (prune_reflogs && run_command_v_opt(reflog.argv, RUN_GIT_CMD))
-               return error(FAILED_RUN, reflog.argv[0]);
+               die(FAILED_RUN, reflog.argv[0]);
 
        pack_refs = 0;
        prune_reflogs = 0;
-       return 0;
 }
 
 int cmd_gc(int argc, const char **argv, const char *prefix)
@@ -565,13 +561,11 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
                        fprintf(stderr, _("See \"git help gc\" for manual housekeeping.\n"));
                }
                if (detach_auto) {
-                       if (report_last_gc_error())
-                               return -1;
+                       report_last_gc_error(); /* dies on error */
 
                        if (lock_repo_for_gc(force, &pid))
                                return 0;
-                       if (gc_before_repack())
-                               return -1;
+                       gc_before_repack(); /* dies on failure */
                        delete_tempfile(&pidfile);
 
                        /*
@@ -611,12 +605,11 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
                atexit(process_log_file_at_exit);
        }
 
-       if (gc_before_repack())
-               return -1;
+       gc_before_repack();
 
        if (!repository_format_precious_objects) {
                if (run_command_v_opt(repack.argv, RUN_GIT_CMD))
-                       return error(FAILED_RUN, repack.argv[0]);
+                       die(FAILED_RUN, repack.argv[0]);
 
                if (prune_expire) {
                        argv_array_push(&prune, prune_expire);
@@ -626,18 +619,18 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
                                argv_array_push(&prune,
                                                "--exclude-promisor-objects");
                        if (run_command_v_opt(prune.argv, RUN_GIT_CMD))
-                               return error(FAILED_RUN, prune.argv[0]);
+                               die(FAILED_RUN, prune.argv[0]);
                }
        }
 
        if (prune_worktrees_expire) {
                argv_array_push(&prune_worktrees, prune_worktrees_expire);
                if (run_command_v_opt(prune_worktrees.argv, RUN_GIT_CMD))
-                       return error(FAILED_RUN, prune_worktrees.argv[0]);
+                       die(FAILED_RUN, prune_worktrees.argv[0]);
        }
 
        if (run_command_v_opt(rerere.argv, RUN_GIT_CMD))
-               return error(FAILED_RUN, rerere.argv[0]);
+               die(FAILED_RUN, rerere.argv[0]);
 
        report_garbage = report_pack_garbage;
        reprepare_packed_git(the_repository);

diff --git a/t/t6500-gc.sh b/t/t6500-gc.sh
index 818435f04e49b50965cd674bf046eb3d494fa939..c474a94a9fd320d769e7611c76dec2fe09be11da 100755 (executable)
--- a/t/t6500-gc.sh
+++ b/t/t6500-gc.sh
@@ -117,7 +117,7 @@ test_expect_success 'background auto gc does not run if gc.log is present and re
        test_config gc.autodetach true &&
        echo fleem >.git/gc.log &&
        test_must_fail git gc --auto 2>err &&
-       test_i18ngrep "^error:" err &&
+       test_i18ngrep "^fatal:" err &&
        test_config gc.logexpiry 5.days &&
        test-tool chmtime =-345600 .git/gc.log &&
        test_must_fail git gc --auto &&