From ff39d74aa99a49749d1de26dc1f6b1e1bfebceb0 Mon Sep 17 00:00:00 2001 From: Dmitry Chagin Date: Fri, 25 Mar 2022 17:54:23 +0300 Subject: [PATCH] linux(4): Add AT_NO_AUTOMOUNT to statx. Specific to Linux AT_NO_AUTOMOUNT flag tells the kernel to not automount the terminal component of pathname if it is a directory that is an automount point. As it is the default for FreeBSD silencly ignore this flag. glibc-2.34 uses this flag in the stat64 system calls which is used by i386. Reviewed by: trasz Differential revision: https://reviews.freebsd.org/D31524 MFC after: 2 weeks --- sys/compat/linux/linux_file.h | 7 +++++++ sys/compat/linux/linux_stats.c | 3 ++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/sys/compat/linux/linux_file.h b/sys/compat/linux/linux_file.h index e6a5bf0ce8a6..3f885f915411 100644 --- a/sys/compat/linux/linux_file.h +++ b/sys/compat/linux/linux_file.h @@ -36,6 +36,13 @@ #define LINUX_AT_EACCESS 0x200 #define LINUX_AT_REMOVEDIR 0x200 #define LINUX_AT_SYMLINK_FOLLOW 0x400 +#define LINUX_AT_NO_AUTOMOUNT 0x800 + /* + * Specific to Linux AT_NO_AUTOMOUNT flag tells the kernel to + * not automount the terminal component of pathname if it is a + * directory that is an automount point. As FreeBSD does not + * have such facility (automount), we can simply ignore this flag. + */ #define LINUX_AT_EMPTY_PATH 0x1000 /* diff --git a/sys/compat/linux/linux_stats.c b/sys/compat/linux/linux_stats.c index 9dc7686cb963..e01cb0c8d87a 100644 --- a/sys/compat/linux/linux_stats.c +++ b/sys/compat/linux/linux_stats.c @@ -774,7 +774,8 @@ linux_statx(struct thread *td, struct linux_statx_args *args) int error, dirfd, flags, unsupported; struct stat buf; - unsupported = args->flags & ~(LINUX_AT_SYMLINK_NOFOLLOW | LINUX_AT_EMPTY_PATH); + unsupported = args->flags & ~(LINUX_AT_SYMLINK_NOFOLLOW | + LINUX_AT_EMPTY_PATH | LINUX_AT_NO_AUTOMOUNT); if (unsupported != 0) { linux_msg(td, "statx unsupported flags 0x%x", unsupported); return (EINVAL);