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Sun, 22 Feb 2026 06:52:03 -0800 (PST) From: Bhavik Sachdev To: Alejandro Colomar Cc: Bhavik Sachdev , linux-man@vger.kernel.org, criu@lists.linux.dev, Andrei Vagin , Pavel Tikhomirov , Jeff Layton , Miklos Szeredi , Josef Bacik , Christian Brauner Subject: [PATCH v2 05/10] man/man2/statmount.2: Document STATMOUNT_OPT_ARRAY Date: Sun, 22 Feb 2026 20:15:55 +0530 Message-ID: <4e925a9f871ec408d82db0124300d97200c4a778.1771771560.git.b.sachdev1904@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-man@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Document STATMOUNT_OPT_ARRAY flag and the corresponding fields introduced by it. This text is based on this commit message [1]. Retrieve only file system options, separated by null bytes. For security opts STATMOUNT_OPT_SEC_ARRAY is used. Link [1]: Signed-off-by: Bhavik Sachdev --- man/man2/statmount.2 | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/man/man2/statmount.2 b/man/man2/statmount.2 index f7a2feff9..c238a3d9f 100644 --- a/man/man2/statmount.2 +++ b/man/man2/statmount.2 @@ -52,6 +52,8 @@ .SH SYNOPSIS .B " __u64 mnt_ns_id;" .B " __u32 fs_subtype;" .B " __u32 sb_source;" +.B " __u32 opt_num;" +.B " __u32 opt_array;" .B " char str[];" .B }; .EE @@ -114,6 +116,7 @@ .SS The mnt_id_req structure STATMOUNT_MNT_OPTS /* Want/got mnt_opts */ STATMOUNT_FS_SUBTYPE /* Want/got fs_subtype */ STATMOUNT_SB_SOURCE /* Want/got sb_source */ +STATMOUNT_OPT_ARRAY /* Want/got opt_... */ .TE .in .P @@ -276,6 +279,16 @@ .SS The returned information .I smbuf.str that contains the source of the mount. It is a null-terminated string. +.TP +.IR smbuf.opt_num " (since Linux 6.13)" +The number of filesystem options set on the mount. +.TP +.IR smbuf.opt_array " (since Linux 6.13)" +The offset to the location in the +.I smbuf.str +buffer that contains file system options separated by null bytes. +They can be iterated over with the help of +.IR smbuf.opt_num . .SH RETURN VALUE On success, zero is returned. On error, \-1 is returned, and -- 2.53.0