[PATCH v5 12/16] securityfs: Extend securityfs with namespacing support

Stefan Berger
2021-12-08T22:19:00Z

Extend 'securityfs' for support of IMA namespacing so that each
IMA (user) namespace can have its own front-end for showing the currently
active policy, the measurement list, number of violations and so on.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---
security/inode.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/security/inode.c b/security/inode.c
index 9ba2fa875c4c..c1aef4613a17 100644
--- a/security/inode.c
+++ b/security/inode.c
@@ -54,7 +54,7 @@ static int securityfs_fill_super(struct super_block *sb, struct fs_context *fc)

static int securityfs_get_tree(struct fs_context *fc)
{
- return get_tree_single(fc, securityfs_fill_super);
+ return get_tree_keyed(fc, securityfs_fill_super, fc->user_ns);
}

static const struct fs_context_operations securityfs_context_ops = {
@@ -72,6 +72,7 @@ static struct file_system_type fs_type = {
.name = "securityfs",
.init_fs_context = securityfs_init_fs_context,
.kill_sb = kill_litter_super,
+ .fs_flags = FS_USERNS_MOUNT,
};

/**
--
2.31.1