From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 14 Jan 2010 06:03:28 +0000 (-0500)
Subject: Switch proc/self to nd_set_link()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7fee4868be91e71a3ee8e57289ebf5e10a12297e;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

Switch proc/self to nd_set_link()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/proc/base.c b/fs/proc/base.c
index e42bbd843ed1..58324c299165 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2369,16 +2369,30 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
 	struct pid_namespace *ns = dentry->d_sb->s_fs_info;
 	pid_t tgid = task_tgid_nr_ns(current, ns);
-	char tmp[PROC_NUMBUF];
-	if (!tgid)
-		return ERR_PTR(-ENOENT);
-	sprintf(tmp, "%d", task_tgid_nr_ns(current, ns));
-	return ERR_PTR(vfs_follow_link(nd,tmp));
+	char *name = ERR_PTR(-ENOENT);
+	if (tgid) {
+		name = __getname();
+		if (!name)
+			name = ERR_PTR(-ENOMEM);
+		else
+			sprintf(name, "%d", tgid);
+	}
+	nd_set_link(nd, name);
+	return NULL;
+}
+
+static void proc_self_put_link(struct dentry *dentry, struct nameidata *nd,
+				void *cookie)
+{
+	char *s = nd_get_link(nd);
+	if (!IS_ERR(s))
+		__putname(s);
 }
 
 static const struct inode_operations proc_self_inode_operations = {
 	.readlink	= proc_self_readlink,
 	.follow_link	= proc_self_follow_link,
+	.put_link	= proc_self_put_link,
 };
 
 /*