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authorAl Viro <viro@zeniv.linux.org.uk>2010-01-14 01:03:28 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2010-02-19 10:25:41 -0500
commit7fee4868be91e71a3ee8e57289ebf5e10a12297e (patch)
treeb2bdbfa885e60fb1c04c2b5fca30ba5fa150fecd /fs/proc
parentac278a9c505092dd82077a2446af8f9fc0d9c095 (diff)
downloadop-kernel-dev-7fee4868be91e71a3ee8e57289ebf5e10a12297e.zip
op-kernel-dev-7fee4868be91e71a3ee8e57289ebf5e10a12297e.tar.gz
Switch proc/self to nd_set_link()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/base.c24
1 files changed, 19 insertions, 5 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index e42bbd8..58324c2 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,
};
/*
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