diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2014-07-31 03:10:50 -0700 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2014-08-04 10:07:11 -0700 |
| commit | 0097875bd41528922fb3bb5f348c53f17e00e2fd (patch) | |
| tree | 414cffac820d04e4542dc7654e7ef188f00ba0b2 /fs/proc/inode.c | |
| parent | 6ba8ed79a3cce14bd5597218fd46408b8376f8f3 (diff) | |
proc: Implement /proc/thread-self to point at the directory of the current thread
/proc/thread-self is derived from /proc/self. /proc/thread-self
points to the directory in proc containing information about the
current thread.
This funtionality has been missing for a long time, and is tricky to
implement in userspace as gettid() is not exported by glibc. More
importantly this allows fixing defects in /proc/mounts and /proc/net
where in a threaded application today they wind up being empty files
when only the initial pthread has exited, causing problems for other
threads.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'fs/proc/inode.c')
| -rw-r--r-- | fs/proc/inode.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c index 0adbc02d60e3..333080d7a671 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -442,6 +442,7 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de) int proc_fill_super(struct super_block *s) { struct inode *root_inode; + int ret; s->s_flags |= MS_NODIRATIME | MS_NOSUID | MS_NOEXEC; s->s_blocksize = 1024; @@ -463,5 +464,9 @@ int proc_fill_super(struct super_block *s) return -ENOMEM; } - return proc_setup_self(s); + ret = proc_setup_self(s); + if (ret) { + return ret; + } + return proc_setup_thread_self(s); } |