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authorDmitry Mishin <dim@openvz.org>2006-03-20 22:45:21 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-20 22:45:21 -0800
commit3fdadf7d27e3fbcf72930941884387d1f4936f04 (patch)
tree167072cf1e60b6b307610563614b435ff0caa52d /net/compat.c
parentc750360938b403e6cc193d293cfbcb099dd6c60e (diff)
downloadlinux-3fdadf7d27e3fbcf72930941884387d1f4936f04.tar.gz
[NET]: {get|set}sockopt compatibility layer
This patch extends {get|set}sockopt compatibility layer in order to move protocol specific parts to their place and avoid huge universal net/compat.c file in the future. Signed-off-by: Dmitry Mishin <dim@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/compat.c')
-rw-r--r--net/compat.c95
1 files changed, 77 insertions, 18 deletions
diff --git a/net/compat.c b/net/compat.c
index e593dace2fd..13177a1a4b3 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -416,7 +416,7 @@ struct compat_sock_fprog {
compat_uptr_t filter; /* struct sock_filter * */
};
-static int do_set_attach_filter(int fd, int level, int optname,
+static int do_set_attach_filter(struct socket *sock, int level, int optname,
char __user *optval, int optlen)
{
struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval;
@@ -432,11 +432,12 @@ static int do_set_attach_filter(int fd, int level, int optname,
__put_user(compat_ptr(ptr), &kfprog->filter))
return -EFAULT;
- return sys_setsockopt(fd, level, optname, (char __user *)kfprog,
+ return sock_setsockopt(sock, level, optname, (char __user *)kfprog,
sizeof(struct sock_fprog));
}
-static int do_set_sock_timeout(int fd, int level, int optname, char __user *optval, int optlen)
+static int do_set_sock_timeout(struct socket *sock, int level,
+ int optname, char __user *optval, int optlen)
{
struct compat_timeval __user *up = (struct compat_timeval __user *) optval;
struct timeval ktime;
@@ -451,30 +452,61 @@ static int do_set_sock_timeout(int fd, int level, int optname, char __user *optv
return -EFAULT;
old_fs = get_fs();
set_fs(KERNEL_DS);
- err = sys_setsockopt(fd, level, optname, (char *) &ktime, sizeof(ktime));
+ err = sock_setsockopt(sock, level, optname, (char *) &ktime, sizeof(ktime));
set_fs(old_fs);
return err;
}
+static int compat_sock_setsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, int optlen)
+{
+ if (optname == SO_ATTACH_FILTER)
+ return do_set_attach_filter(sock, level, optname,
+ optval, optlen);
+ if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
+ return do_set_sock_timeout(sock, level, optname, optval, optlen);
+
+ return sock_setsockopt(sock, level, optname, optval, optlen);
+}
+
asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
char __user *optval, int optlen)
{
+ int err;
+ struct socket *sock;
+
/* SO_SET_REPLACE seems to be the same in all levels */
if (optname == IPT_SO_SET_REPLACE)
return do_netfilter_replace(fd, level, optname,
optval, optlen);
- if (level == SOL_SOCKET && optname == SO_ATTACH_FILTER)
- return do_set_attach_filter(fd, level, optname,
- optval, optlen);
- if (level == SOL_SOCKET &&
- (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
- return do_set_sock_timeout(fd, level, optname, optval, optlen);
- return sys_setsockopt(fd, level, optname, optval, optlen);
+ if (optlen < 0)
+ return -EINVAL;
+
+ if ((sock = sockfd_lookup(fd, &err))!=NULL)
+ {
+ err = security_socket_setsockopt(sock,level,optname);
+ if (err) {
+ sockfd_put(sock);
+ return err;
+ }
+
+ if (level == SOL_SOCKET)
+ err = compat_sock_setsockopt(sock, level,
+ optname, optval, optlen);
+ else if (sock->ops->compat_setsockopt)
+ err = sock->ops->compat_setsockopt(sock, level,
+ optname, optval, optlen);
+ else
+ err = sock->ops->setsockopt(sock, level,
+ optname, optval, optlen);
+ sockfd_put(sock);
+ }
+ return err;
}
-static int do_get_sock_timeout(int fd, int level, int optname,
+static int do_get_sock_timeout(struct socket *sock, int level, int optname,
char __user *optval, int __user *optlen)
{
struct compat_timeval __user *up;
@@ -490,7 +522,7 @@ static int do_get_sock_timeout(int fd, int level, int optname,
len = sizeof(ktime);
old_fs = get_fs();
set_fs(KERNEL_DS);
- err = sys_getsockopt(fd, level, optname, (char *) &ktime, &len);
+ err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
set_fs(old_fs);
if (!err) {
@@ -503,15 +535,42 @@ static int do_get_sock_timeout(int fd, int level, int optname,
return err;
}
-asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
+static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
char __user *optval, int __user *optlen)
{
- if (level == SOL_SOCKET &&
- (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO))
- return do_get_sock_timeout(fd, level, optname, optval, optlen);
- return sys_getsockopt(fd, level, optname, optval, optlen);
+ if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)
+ return do_get_sock_timeout(sock, level, optname, optval, optlen);
+ return sock_getsockopt(sock, level, optname, optval, optlen);
}
+asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
+ char __user *optval, int __user *optlen)
+{
+ int err;
+ struct socket *sock;
+
+ if ((sock = sockfd_lookup(fd, &err))!=NULL)
+ {
+ err = security_socket_getsockopt(sock, level,
+ optname);
+ if (err) {
+ sockfd_put(sock);
+ return err;
+ }
+
+ if (level == SOL_SOCKET)
+ err = compat_sock_getsockopt(sock, level,
+ optname, optval, optlen);
+ else if (sock->ops->compat_getsockopt)
+ err = sock->ops->compat_getsockopt(sock, level,
+ optname, optval, optlen);
+ else
+ err = sock->ops->getsockopt(sock, level,
+ optname, optval, optlen);
+ sockfd_put(sock);
+ }
+ return err;
+}
/* Argument list sizes for compat_sys_socketcall */
#define AL(x) ((x) * sizeof(u32))
static unsigned char nas[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),