diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2019-04-17 23:51:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-04-20 00:07:40 +0300 |
| commit | c7cbdbf29f488a19982cd9f4a109887f18028bbb (patch) | |
| tree | 74b39321c14b93411eda0939683dc9b8b713717b /net/x25/af_x25.c | |
| parent | 1ab839281cf72476988901a2606378d76530f99c (diff) | |
| download | linux-c7cbdbf29f488a19982cd9f4a109887f18028bbb.tar.xz | |
net: rework SIOCGSTAMP ioctl handling
The SIOCGSTAMP/SIOCGSTAMPNS ioctl commands are implemented by many
socket protocol handlers, and all of those end up calling the same
sock_get_timestamp()/sock_get_timestampns() helper functions, which
results in a lot of duplicate code.
With the introduction of 64-bit time_t on 32-bit architectures, this
gets worse, as we then need four different ioctl commands in each
socket protocol implementation.
To simplify that, let's add a new .gettstamp() operation in
struct proto_ops, and move ioctl implementation into the common
sock_ioctl()/compat_sock_ioctl_trans() functions that these all go
through.
We can reuse the sock_get_timestamp() implementation, but generalize
it so it can deal with both native and compat mode, as well as
timeval and timespec structures.
Acked-by: Stefan Schmidt <stefan@datenfreihafen.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/lkml/CAK8P3a038aDQQotzua_QtKGhq8O9n+rdiz2=WDCp82ys8eUT+A@mail.gmail.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/x25/af_x25.c')
| -rw-r--r-- | net/x25/af_x25.c | 27 |
1 files changed, 1 insertions, 26 deletions
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index 20a511398389..0ea48a52ce79 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -1398,18 +1398,6 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) break; } - case SIOCGSTAMP: - rc = -EINVAL; - if (sk) - rc = sock_get_timestamp(sk, - (struct timeval __user *)argp); - break; - case SIOCGSTAMPNS: - rc = -EINVAL; - if (sk) - rc = sock_get_timestampns(sk, - (struct timespec __user *)argp); - break; case SIOCGIFADDR: case SIOCSIFADDR: case SIOCGIFDSTADDR: @@ -1681,8 +1669,6 @@ static int compat_x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { void __user *argp = compat_ptr(arg); - struct sock *sk = sock->sk; - int rc = -ENOIOCTLCMD; switch(cmd) { @@ -1690,18 +1676,6 @@ static int compat_x25_ioctl(struct socket *sock, unsigned int cmd, case TIOCINQ: rc = x25_ioctl(sock, cmd, (unsigned long)argp); break; - case SIOCGSTAMP: - rc = -EINVAL; - if (sk) - rc = compat_sock_get_timestamp(sk, - (struct timeval __user*)argp); - break; - case SIOCGSTAMPNS: - rc = -EINVAL; - if (sk) - rc = compat_sock_get_timestampns(sk, - (struct timespec __user*)argp); - break; case SIOCGIFADDR: case SIOCSIFADDR: case SIOCGIFDSTADDR: @@ -1765,6 +1739,7 @@ static const struct proto_ops x25_proto_ops = { #ifdef CONFIG_COMPAT .compat_ioctl = compat_x25_ioctl, #endif + .gettstamp = sock_gettstamp, .listen = x25_listen, .shutdown = sock_no_shutdown, .setsockopt = x25_setsockopt, |