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authorMiklos Szeredi <mszeredi@redhat.com>2016-12-09 16:45:03 +0100
committerMiklos Szeredi <mszeredi@redhat.com>2016-12-09 16:45:03 +0100
commit2a07a1f5abba308729bd082dce4d035365165d85 (patch)
tree6608a88e5bb8552fb061430eea7f6955d81544cd /fs/proc
parent6c988f575915ab5162332d61f91dca99dcc17335 (diff)
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proc/self: use generic_readlink
The /proc/self and /proc/self-thread symlinks have separate but identical functionality for reading and following. This cleanup utilizes generic_readlink to remove the duplication. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/self.c14
-rw-r--r--fs/proc/thread_self.c15
2 files changed, 2 insertions, 27 deletions
diff --git a/fs/proc/self.c b/fs/proc/self.c
index 40245954c450..b7a29e55f802 100644
--- a/fs/proc/self.c
+++ b/fs/proc/self.c
@@ -6,18 +6,6 @@
/*
* /proc/self:
*/
-static int proc_self_readlink(struct dentry *dentry, char __user *buffer,
- int buflen)
-{
- 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 -ENOENT;
- sprintf(tmp, "%d", tgid);
- return readlink_copy(buffer, buflen, tmp);
-}
-
static const char *proc_self_get_link(struct dentry *dentry,
struct inode *inode,
struct delayed_call *done)
@@ -38,7 +26,7 @@ static const char *proc_self_get_link(struct dentry *dentry,
}
static const struct inode_operations proc_self_inode_operations = {
- .readlink = proc_self_readlink,
+ .readlink = generic_readlink,
.get_link = proc_self_get_link,
};
diff --git a/fs/proc/thread_self.c b/fs/proc/thread_self.c
index 595b90a9766c..adaba20b59b6 100644
--- a/fs/proc/thread_self.c
+++ b/fs/proc/thread_self.c
@@ -6,19 +6,6 @@
/*
* /proc/thread_self:
*/
-static int proc_thread_self_readlink(struct dentry *dentry, char __user *buffer,
- int buflen)
-{
- struct pid_namespace *ns = dentry->d_sb->s_fs_info;
- pid_t tgid = task_tgid_nr_ns(current, ns);
- pid_t pid = task_pid_nr_ns(current, ns);
- char tmp[PROC_NUMBUF + 6 + PROC_NUMBUF];
- if (!pid)
- return -ENOENT;
- sprintf(tmp, "%d/task/%d", tgid, pid);
- return readlink_copy(buffer, buflen, tmp);
-}
-
static const char *proc_thread_self_get_link(struct dentry *dentry,
struct inode *inode,
struct delayed_call *done)
@@ -40,7 +27,7 @@ static const char *proc_thread_self_get_link(struct dentry *dentry,
}
static const struct inode_operations proc_thread_self_inode_operations = {
- .readlink = proc_thread_self_readlink,
+ .readlink = generic_readlink,
.get_link = proc_thread_self_get_link,
};