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| author | Al Viro <viro@zeniv.linux.org.uk> | 2010-01-14 01:03:28 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-02-19 10:25:41 -0500 |
| commit | 7fee4868be91e71a3ee8e57289ebf5e10a12297e (patch) | |
| tree | b2bdbfa885e60fb1c04c2b5fca30ba5fa150fecd | |
| parent | ac278a9c505092dd82077a2446af8f9fc0d9c095 (diff) | |
| download | lwn-7fee4868be91e71a3ee8e57289ebf5e10a12297e.tar.gz lwn-7fee4868be91e71a3ee8e57289ebf5e10a12297e.zip | |
Switch proc/self to nd_set_link()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/proc/base.c | 24 |
1 files changed, 19 insertions, 5 deletions
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, }; /* |