clean: use warning_errno() when appropriate

All these warning() calls are preceded by a system call. Report the
actual error to help the user understand why we fail to remove
something.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/clean.c b/builtin/clean.c
index 0371010afbad54283ceca9883f2a9fbe6da4686b..e1c074a5c0dc69a9b850edd6697884c21eba77c6 100644 (file)
--- a/builtin/clean.c
+++ b/builtin/clean.c
@@ -174,8 +174,10 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
                /* an empty dir could be removed even if it is unreadble */
                res = dry_run ? 0 : rmdir(path->buf);
                if (res) {
+                       int saved_errno = errno;
                        quote_path_relative(path->buf, prefix, &quoted);
-                       warning(_(msg_warn_remove_failed), quoted.buf);
+                       errno = saved_errno;
+                       warning_errno(_(msg_warn_remove_failed), quoted.buf);
                        *dir_gone = 0;
                }
                return res;
@@ -208,8 +210,10 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
                                quote_path_relative(path->buf, prefix, &quoted);
                                string_list_append(&dels, quoted.buf);
                        } else {
+                               int saved_errno = errno;
                                quote_path_relative(path->buf, prefix, &quoted);
-                               warning(_(msg_warn_remove_failed), quoted.buf);
+                               errno = saved_errno;
+                               warning_errno(_(msg_warn_remove_failed), quoted.buf);
                                *dir_gone = 0;
                                ret = 1;
                        }
@@ -230,8 +234,10 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
                if (!res)
                        *dir_gone = 1;
                else {
+                       int saved_errno = errno;
                        quote_path_relative(path->buf, prefix, &quoted);
-                       warning(_(msg_warn_remove_failed), quoted.buf);
+                       errno = saved_errno;
+                       warning_errno(_(msg_warn_remove_failed), quoted.buf);
                        *dir_gone = 0;
                        ret = 1;
                }
@@ -981,8 +987,10 @@ int cmd_clean(int argc, const char **argv, const char *prefix)
                } else {
                        res = dry_run ? 0 : unlink(abs_path.buf);
                        if (res) {
+                               int saved_errno = errno;
                                qname = quote_path_relative(item->string, NULL, &buf);
-                               warning(_(msg_warn_remove_failed), qname);
+                               errno = saved_errno;
+                               warning_errno(_(msg_warn_remove_failed), qname);
                                errors++;
                        } else if (!quiet) {
                                qname = quote_path_relative(item->string, NULL, &buf);