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Smack: create a sysfs mount point for smackfs 

There are a number of "conventions" for where to put LSM filesystems.
Smack adheres to none of them. Create a mount point at /sys/fs/smackfs
for mounting smackfs so that Smack can be conventional.

Targeted for git://git.gitorious.org/smack-next/kernel.git

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
This commit is contained in:
Casey Schaufler 2012-11-01 18:14:32 -07:00
parent 111fe8bd65
commit e930723741
1 changed files with 17 additions and 0 deletions
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17
security/smack/smackfs.c
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@ -2063,6 +2063,19 @@ static const struct file_operations smk_revoke_subj_ops = {
.llseek = generic_file_llseek,
};
static struct kset *smackfs_kset;
/**
* smk_init_sysfs - initialize /sys/fs/smackfs
*
*/
static int smk_init_sysfs(void)
{
smackfs_kset = kset_create_and_add("smackfs", NULL, fs_kobj);
if (!smackfs_kset)
return -ENOMEM;
return 0;
}
/**
* smk_fill_super - fill the /smackfs superblock
* @sb: the empty superblock
@ -2183,6 +2196,10 @@ static int __init init_smk_fs(void)
if (!security_module_enable(&smack_ops))
return 0;
err = smk_init_sysfs();
if (err)
printk(KERN_ERR "smackfs: sysfs mountpoint problem.\n");
err = register_filesystem(&smk_fs_type);
if (!err) {
smackfs_mount = kern_mount(&smk_fs_type);