diff options
Diffstat (limited to 'security/tomoyo/realpath.c')
| -rw-r--r-- | security/tomoyo/realpath.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c index 5f2e33263371..0b55faab3b32 100644 --- a/security/tomoyo/realpath.c +++ b/security/tomoyo/realpath.c @@ -108,6 +108,15 @@ int tomoyo_realpath_from_path2(struct path *path, char *newname, spin_unlock(&dcache_lock); path_put(&root); path_put(&ns_root); + /* Prepend "/proc" prefix if using internal proc vfs mount. */ + if (!IS_ERR(sp) && (path->mnt->mnt_parent == path->mnt) && + (strcmp(path->mnt->mnt_sb->s_type->name, "proc") == 0)) { + sp -= 5; + if (sp >= newname) + memcpy(sp, "/proc", 5); + else + sp = ERR_PTR(-ENOMEM); + } } if (IS_ERR(sp)) error = PTR_ERR(sp); |