From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.3 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 13041 invoked from network); 7 Oct 2023 18:02:35 -0000 Received: from second.openwall.net (193.110.157.125) by inbox.vuxu.org with ESMTPUTF8; 7 Oct 2023 18:02:35 -0000 Received: (qmail 31916 invoked by uid 550); 7 Oct 2023 18:02:32 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 31882 invoked from network); 7 Oct 2023 18:02:31 -0000 DKIM-Filter: OpenDKIM Filter v2.11.0 mail.ispras.ru A774540F1DD1 From: Alexey Izbyshev To: musl@lists.openwall.com Date: Sat, 7 Oct 2023 21:02:18 +0300 Message-Id: <20231007180218.231638-1-izbyshev@ispras.ru> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Mail-Followup-To: musl@lists.openwall.com Content-Transfer-Encoding: 8bit Subject: [musl] [PATCH v2] pass AT_NO_AUTOMOUNT when emulating fstatat via statx AT_NO_AUTOMOUNT is implied for stat/lstat/fstatat syscalls since Linux 3.1 [1]. However, this is not the case for statx syscall, which defaults to automounting, so this flag must be passed explicitly when statx is used to implement stat-like functions. This change affects only arches which use 32-bit seconds in struct kstat, as well as out-of-tree/future ports to arches which lack SYS_fstatat. [1] https://git.kernel.org/torvalds/c/b6c8069d3577481390b3f24a8434ad72a3235594 --- Fixed the wrong statement about affected arches in the commit message. --- src/stat/fstatat.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/stat/fstatat.c b/src/stat/fstatat.c index 04506375d897..9eed063b26bc 100644 --- a/src/stat/fstatat.c +++ b/src/stat/fstatat.c @@ -36,6 +36,7 @@ static int fstatat_statx(int fd, const char *restrict path, struct stat *restric { struct statx stx; + flag |= AT_NO_AUTOMOUNT; int ret = __syscall(SYS_statx, fd, path, flag, 0x7ff, &stx); if (ret) return ret; -- 2.39.2