diff options
Diffstat (limited to 'fs/proc/base.c')
-rw-r--r-- | fs/proc/base.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 8a19a8a1a3e6..75b1979749a5 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c | |||
@@ -2101,15 +2101,23 @@ static const struct file_operations proc_coredump_filter_operations = { | |||
2101 | static int proc_self_readlink(struct dentry *dentry, char __user *buffer, | 2101 | static int proc_self_readlink(struct dentry *dentry, char __user *buffer, |
2102 | int buflen) | 2102 | int buflen) |
2103 | { | 2103 | { |
2104 | struct pid_namespace *ns = dentry->d_sb->s_fs_info; | ||
2105 | pid_t tgid = task_tgid_nr_ns(current, ns); | ||
2104 | char tmp[PROC_NUMBUF]; | 2106 | char tmp[PROC_NUMBUF]; |
2105 | sprintf(tmp, "%d", task_tgid_vnr(current)); | 2107 | if (!tgid) |
2108 | return -ENOENT; | ||
2109 | sprintf(tmp, "%d", tgid); | ||
2106 | return vfs_readlink(dentry,buffer,buflen,tmp); | 2110 | return vfs_readlink(dentry,buffer,buflen,tmp); |
2107 | } | 2111 | } |
2108 | 2112 | ||
2109 | static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd) | 2113 | static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd) |
2110 | { | 2114 | { |
2115 | struct pid_namespace *ns = dentry->d_sb->s_fs_info; | ||
2116 | pid_t tgid = task_tgid_nr_ns(current, ns); | ||
2111 | char tmp[PROC_NUMBUF]; | 2117 | char tmp[PROC_NUMBUF]; |
2112 | sprintf(tmp, "%d", task_tgid_vnr(current)); | 2118 | if (!tgid) |
2119 | return ERR_PTR(-ENOENT); | ||
2120 | sprintf(tmp, "%d", task_tgid_nr_ns(current, ns)); | ||
2113 | return ERR_PTR(vfs_follow_link(nd,tmp)); | 2121 | return ERR_PTR(vfs_follow_link(nd,tmp)); |
2114 | } | 2122 | } |
2115 | 2123 | ||