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Switch proc/self to nd_set_link()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2010-01-14 01:03:28 -05:00
parent ac278a9c50
commit 7fee4868be
1 changed files with 19 additions and 5 deletions
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24
fs/proc/base.c
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@@ -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; struct pid_namespace *ns = dentry->d_sb->s_fs_info;
pid_t tgid = task_tgid_nr_ns(current, ns); pid_t tgid = task_tgid_nr_ns(current, ns);
char tmp[PROC_NUMBUF]; char *name = ERR_PTR(-ENOENT);
if (!tgid) if (tgid) {
return ERR_PTR(-ENOENT); name = __getname();
sprintf(tmp, "%d", task_tgid_nr_ns(current, ns)); if (!name)
return ERR_PTR(vfs_follow_link(nd,tmp)); 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 = { static const struct inode_operations proc_self_inode_operations = {
.readlink = proc_self_readlink, .readlink = proc_self_readlink,
.follow_link = proc_self_follow_link, .follow_link = proc_self_follow_link,
.put_link = proc_self_put_link,
}; };
/* /*