diff options
| author | Sasikantha babu <sasikanth.v19@gmail.com> | 2012-05-31 16:26:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-31 17:49:26 -0700 |
| commit | 499eea6bf9c06df3bf4549954aee6fb3427946ed (patch) | |
| tree | bdd7c4be7ac845e0511c6b36f91245105ed8fdcf /kernel/sys.c | |
| parent | 5401cf3fac92b35415c1d011e9866a90b8bed88f (diff) | |
| download | lwn-499eea6bf9c06df3bf4549954aee6fb3427946ed.tar.gz lwn-499eea6bf9c06df3bf4549954aee6fb3427946ed.zip | |
sethostname/setdomainname: notify userspace when there is a change in uts_kern_table
sethostname() and setdomainname() notify userspace on failure (without
modifying uts_kern_table). Change things so that we only notify userspace
on success, when uts_kern_table was actually modified.
Signed-off-by: Sasikantha babu <sasikanth.v19@gmail.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: WANG Cong <amwang@redhat.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index 6df42624e454..8b71cef3bf1a 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1378,8 +1378,8 @@ SYSCALL_DEFINE2(sethostname, char __user *, name, int, len) memcpy(u->nodename, tmp, len); memset(u->nodename + len, 0, sizeof(u->nodename) - len); errno = 0; + uts_proc_notify(UTS_PROC_HOSTNAME); } - uts_proc_notify(UTS_PROC_HOSTNAME); up_write(&uts_sem); return errno; } @@ -1429,8 +1429,8 @@ SYSCALL_DEFINE2(setdomainname, char __user *, name, int, len) memcpy(u->domainname, tmp, len); memset(u->domainname + len, 0, sizeof(u->domainname) - len); errno = 0; + uts_proc_notify(UTS_PROC_DOMAINNAME); } - uts_proc_notify(UTS_PROC_DOMAINNAME); up_write(&uts_sem); return errno; } |