diff options
Diffstat (limited to 'security/apparmor/file.c')
| -rw-r--r-- | security/apparmor/file.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/security/apparmor/file.c b/security/apparmor/file.c index 9a67a33904b3..224b2fef93ca 100644 --- a/security/apparmor/file.c +++ b/security/apparmor/file.c @@ -21,6 +21,7 @@ #include "include/cred.h" #include "include/file.h" #include "include/match.h" +#include "include/net.h" #include "include/path.h" #include "include/policy.h" #include "include/label.h" @@ -560,6 +561,32 @@ static int __file_path_perm(const char *op, struct aa_label *label, return error; } +static int __file_sock_perm(const char *op, struct aa_label *label, + struct aa_label *flabel, struct file *file, + u32 request, u32 denied) +{ + struct socket *sock = (struct socket *) file->private_data; + int error; + + AA_BUG(!sock); + + /* revalidation due to label out of date. No revocation at this time */ + if (!denied && aa_label_is_subset(flabel, label)) + return 0; + + /* TODO: improve to skip profiles cached in flabel */ + error = aa_sock_file_perm(label, op, request, sock); + if (denied) { + /* TODO: improve to skip profiles checked above */ + /* check every profile in file label to is cached */ + last_error(error, aa_sock_file_perm(flabel, op, request, sock)); + } + if (!error) + update_file_ctx(file_ctx(file), label, request); + + return error; +} + /** * aa_file_perm - do permission revalidation check & audit for @file * @op: operation being checked @@ -604,6 +631,9 @@ int aa_file_perm(const char *op, struct aa_label *label, struct file *file, error = __file_path_perm(op, label, flabel, file, request, denied); + else if (S_ISSOCK(file_inode(file)->i_mode)) + error = __file_sock_perm(op, label, flabel, file, request, + denied); done: rcu_read_unlock(); |