summaryrefslogtreecommitdiffstats
path: root/fs/proc/inode.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/proc/inode.c')
-rw-r--r--fs/proc/inode.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 13a50a3..7697b66 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -23,6 +23,7 @@
#include <linux/slab.h>
#include <linux/mount.h>
#include <linux/magic.h>
+#include <linux/namei.h>
#include <asm/uaccess.h>
@@ -393,6 +394,26 @@ static const struct file_operations proc_reg_file_ops_no_compat = {
};
#endif
+static void *proc_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+ struct proc_dir_entry *pde = PDE(dentry->d_inode);
+ if (unlikely(!use_pde(pde)))
+ return ERR_PTR(-EINVAL);
+ nd_set_link(nd, pde->data);
+ return pde;
+}
+
+static void proc_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
+{
+ unuse_pde(p);
+}
+
+const struct inode_operations proc_link_inode_operations = {
+ .readlink = generic_readlink,
+ .follow_link = proc_follow_link,
+ .put_link = proc_put_link,
+};
+
struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
{
struct inode *inode = new_inode_pseudo(sb);
OpenPOWER on IntegriCloud