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fs: prepend statmount.mnt_opts string with security_sb_mnt_opts()

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Currently these mount options aren't accessible via statmount().

The read handler for /proc/#/mountinfo calls security_sb_show_options()
to emit the security options after emitting superblock flag options, but
before calling sb->s_op->show_options.

Have statmount_mnt_opts() call security_sb_show_options() before
calling ->show_options.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/20241115-statmount-v2-2-cd29aeff9cbb@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Jeff Layton 2024-11-15 10:35:53 -05:00 • committed by Christian Brauner
parent c6640d46dc
commit 056d33137b
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1 changed files with 4 additions and 0 deletions
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4
fs/namespace.c
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@ -5036,6 +5036,10 @@ static int statmount_mnt_opts(struct kstatmount *s, struct seq_file *seq)
if (sb->s_op->show_options) {
size_t start = seq->count;
err = security_sb_show_options(seq, sb);
if (err)
return err;
err = sb->s_op->show_options(seq, mnt->mnt_root);
if (err)
return err;