diff options
| author | Eric Paris <eparis@redhat.com> | 2008-07-04 09:47:13 +1000 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2008-07-14 15:02:05 +1000 |
| commit | 2069f457848f846cb31149c9aa29b330a6b66d1b (patch) | |
| tree | 199e7bb15e7d7b5cf008cd6fdb6cefc0d6af7f13 /fs/namespace.c | |
| parent | 811f3799279e567aa354c649ce22688d949ac7a9 (diff) | |
| download | lwn-2069f457848f846cb31149c9aa29b330a6b66d1b.tar.gz lwn-2069f457848f846cb31149c9aa29b330a6b66d1b.zip | |
LSM/SELinux: show LSM mount options in /proc/mounts
This patch causes SELinux mount options to show up in /proc/mounts. As
with other code in the area seq_put errors are ignored. Other LSM's
will not have their mount options displayed until they fill in their own
security_sb_show_options() function.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 4fc302c2a0e0..4f6f7635b59c 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -750,7 +750,7 @@ struct proc_fs_info { const char *str; }; -static void show_sb_opts(struct seq_file *m, struct super_block *sb) +static int show_sb_opts(struct seq_file *m, struct super_block *sb) { static const struct proc_fs_info fs_info[] = { { MS_SYNCHRONOUS, ",sync" }, @@ -764,6 +764,8 @@ static void show_sb_opts(struct seq_file *m, struct super_block *sb) if (sb->s_flags & fs_infop->flag) seq_puts(m, fs_infop->str); } + + return security_sb_show_options(m, sb); } static void show_mnt_opts(struct seq_file *m, struct vfsmount *mnt) @@ -806,11 +808,14 @@ static int show_vfsmnt(struct seq_file *m, void *v) seq_putc(m, ' '); show_type(m, mnt->mnt_sb); seq_puts(m, __mnt_is_readonly(mnt) ? " ro" : " rw"); - show_sb_opts(m, mnt->mnt_sb); + err = show_sb_opts(m, mnt->mnt_sb); + if (err) + goto out; show_mnt_opts(m, mnt); if (mnt->mnt_sb->s_op->show_options) err = mnt->mnt_sb->s_op->show_options(m, mnt); seq_puts(m, " 0 0\n"); +out: return err; } @@ -865,10 +870,13 @@ static int show_mountinfo(struct seq_file *m, void *v) seq_putc(m, ' '); mangle(m, mnt->mnt_devname ? mnt->mnt_devname : "none"); seq_puts(m, sb->s_flags & MS_RDONLY ? " ro" : " rw"); - show_sb_opts(m, sb); + err = show_sb_opts(m, sb); + if (err) + goto out; if (sb->s_op->show_options) err = sb->s_op->show_options(m, mnt); seq_putc(m, '\n'); +out: return err; } |