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authorDavid S. Miller <davem@davemloft.net>2016-01-13 00:21:27 -0500
committerDavid S. Miller <davem@davemloft.net>2016-01-13 00:21:27 -0500
commitddb5388ffd0ad75d07e7b78181a0b579824ba6f0 (patch)
treebe1e2bd103c69d7bbace3fffd97bc3d714bbc3d7 /kernel/bpf/inode.c
parentccdf6ce6a8dba374668ae9b4d763e19903611c38 (diff)
parent67990608c8b95d2b8ccc29932376ae73d5818727 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Diffstat (limited to 'kernel/bpf/inode.c')
-rw-r--r--kernel/bpf/inode.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c
index 5a8a797d50b7..f2ece3c174a5 100644
--- a/kernel/bpf/inode.c
+++ b/kernel/bpf/inode.c
@@ -187,11 +187,31 @@ static int bpf_mkobj(struct inode *dir, struct dentry *dentry, umode_t mode,
}
}
+static int bpf_link(struct dentry *old_dentry, struct inode *dir,
+ struct dentry *new_dentry)
+{
+ if (bpf_dname_reserved(new_dentry))
+ return -EPERM;
+
+ return simple_link(old_dentry, dir, new_dentry);
+}
+
+static int bpf_rename(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry)
+{
+ if (bpf_dname_reserved(new_dentry))
+ return -EPERM;
+
+ return simple_rename(old_dir, old_dentry, new_dir, new_dentry);
+}
+
static const struct inode_operations bpf_dir_iops = {
.lookup = simple_lookup,
.mknod = bpf_mkobj,
.mkdir = bpf_mkdir,
.rmdir = simple_rmdir,
+ .rename = bpf_rename,
+ .link = bpf_link,
.unlink = simple_unlink,
};