diff options
| author | Johannes Berg | 2019-01-25 22:43:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2019-02-27 10:08:59 +0100 |
| commit | 99f3c89669d9f2d9c88303ee5d03541ae211fc97 (patch) | |
| tree | cdaf9e683efcbdd24f578d5eca1c32124fa6c086 /net/socket.c | |
| parent | team: avoid complex list operations in team_nl_cmd_options_set() (diff) | |
| download | kernel-qcow2-linux-99f3c89669d9f2d9c88303ee5d03541ae211fc97.tar.gz kernel-qcow2-linux-99f3c89669d9f2d9c88303ee5d03541ae211fc97.tar.xz kernel-qcow2-linux-99f3c89669d9f2d9c88303ee5d03541ae211fc97.zip | |
Revert "socket: fix struct ifreq size in compat ioctl"
[ Upstream commit 63ff03ab786ab1bc6cca01d48eacd22c95b9b3eb ]
This reverts commit 1cebf8f143c2 ("socket: fix struct ifreq
size in compat ioctl"), it's a bugfix for another commit that
I'll revert next.
This is not a 'perfect' revert, I'm keeping some coding style
intact rather than revert to the state with indentation errors.
Cc: stable@vger.kernel.org
Fixes: 1cebf8f143c2 ("socket: fix struct ifreq size in compat ioctl")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/socket.c')
| -rw-r--r-- | net/socket.c | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/net/socket.c b/net/socket.c index 390a8ecef4bf..85a83553f8fa 100644 --- a/net/socket.c +++ b/net/socket.c @@ -941,8 +941,7 @@ void dlci_ioctl_set(int (*hook) (unsigned int, void __user *)) EXPORT_SYMBOL(dlci_ioctl_set); static long sock_do_ioctl(struct net *net, struct socket *sock, - unsigned int cmd, unsigned long arg, - unsigned int ifreq_size) + unsigned int cmd, unsigned long arg) { int err; void __user *argp = (void __user *)arg; @@ -968,11 +967,11 @@ static long sock_do_ioctl(struct net *net, struct socket *sock, } else { struct ifreq ifr; bool need_copyout; - if (copy_from_user(&ifr, argp, ifreq_size)) + if (copy_from_user(&ifr, argp, sizeof(struct ifreq))) return -EFAULT; err = dev_ioctl(net, cmd, &ifr, &need_copyout); if (!err && need_copyout) - if (copy_to_user(argp, &ifr, ifreq_size)) + if (copy_to_user(argp, &ifr, sizeof(struct ifreq))) return -EFAULT; } return err; @@ -1071,8 +1070,7 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg) err = open_related_ns(&net->ns, get_net_ns); break; default: - err = sock_do_ioctl(net, sock, cmd, arg, - sizeof(struct ifreq)); + err = sock_do_ioctl(net, sock, cmd, arg); break; } return err; @@ -2752,8 +2750,7 @@ static int do_siocgstamp(struct net *net, struct socket *sock, int err; set_fs(KERNEL_DS); - err = sock_do_ioctl(net, sock, cmd, (unsigned long)&ktv, - sizeof(struct compat_ifreq)); + err = sock_do_ioctl(net, sock, cmd, (unsigned long)&ktv); set_fs(old_fs); if (!err) err = compat_put_timeval(&ktv, up); @@ -2769,8 +2766,7 @@ static int do_siocgstampns(struct net *net, struct socket *sock, int err; set_fs(KERNEL_DS); - err = sock_do_ioctl(net, sock, cmd, (unsigned long)&kts, - sizeof(struct compat_ifreq)); + err = sock_do_ioctl(net, sock, cmd, (unsigned long)&kts); set_fs(old_fs); if (!err) err = compat_put_timespec(&kts, up); @@ -3081,8 +3077,7 @@ static int routing_ioctl(struct net *net, struct socket *sock, } set_fs(KERNEL_DS); - ret = sock_do_ioctl(net, sock, cmd, (unsigned long) r, - sizeof(struct compat_ifreq)); + ret = sock_do_ioctl(net, sock, cmd, (unsigned long) r); set_fs(old_fs); out: @@ -3195,8 +3190,7 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock, case SIOCBONDSETHWADDR: case SIOCBONDCHANGEACTIVE: case SIOCGIFNAME: - return sock_do_ioctl(net, sock, cmd, arg, - sizeof(struct compat_ifreq)); + return sock_do_ioctl(net, sock, cmd, arg); } return -ENOIOCTLCMD; |