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authorAl Viro <viro@zeniv.linux.org.uk>2020-04-27 18:37:02 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2020-05-21 03:31:32 +0300
commitbbced07d9952ca290e8de3957c75b8b401d7a867 (patch)
tree3a2933c2db4da381afebe1919453d2da0dd13f04 /net/compat.c
parentb212c322c8d73c48062340dc4cbe150c4ce97fb8 (diff)
downloadlinux-bbced07d9952ca290e8de3957c75b8b401d7a867.tar.xz
get rid of compat_mc_setsockopt()
not used anymore Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'net/compat.c')
-rw-r--r--net/compat.c90
1 files changed, 0 insertions, 90 deletions
diff --git a/net/compat.c b/net/compat.c
index 7bdfda2b382a..afd7b444e0bf 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -448,96 +448,6 @@ COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
return __compat_sys_getsockopt(fd, level, optname, optval, optlen);
}
-#define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \
- sizeof(struct __kernel_sockaddr_storage))
-
-int compat_mc_setsockopt(struct sock *sock, int level, int optname,
- char __user *optval, unsigned int optlen,
- int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
-{
- char __user *koptval = optval;
- int koptlen = optlen;
-
- switch (optname) {
- case MCAST_JOIN_GROUP:
- case MCAST_LEAVE_GROUP:
- {
- struct compat_group_req __user *gr32 = (void __user *)optval;
- struct group_req __user *kgr =
- compat_alloc_user_space(sizeof(struct group_req));
- u32 interface;
-
- if (!access_ok(gr32, sizeof(*gr32)) ||
- !access_ok(kgr, sizeof(struct group_req)) ||
- __get_user(interface, &gr32->gr_interface) ||
- __put_user(interface, &kgr->gr_interface) ||
- copy_in_user(&kgr->gr_group, &gr32->gr_group,
- sizeof(kgr->gr_group)))
- return -EFAULT;
- koptval = (char __user *)kgr;
- koptlen = sizeof(struct group_req);
- break;
- }
- case MCAST_JOIN_SOURCE_GROUP:
- case MCAST_LEAVE_SOURCE_GROUP:
- case MCAST_BLOCK_SOURCE:
- case MCAST_UNBLOCK_SOURCE:
- {
- struct compat_group_source_req __user *gsr32 = (void __user *)optval;
- struct group_source_req __user *kgsr = compat_alloc_user_space(
- sizeof(struct group_source_req));
- u32 interface;
-
- if (!access_ok(gsr32, sizeof(*gsr32)) ||
- !access_ok(kgsr,
- sizeof(struct group_source_req)) ||
- __get_user(interface, &gsr32->gsr_interface) ||
- __put_user(interface, &kgsr->gsr_interface) ||
- copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group,
- sizeof(kgsr->gsr_group)) ||
- copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source,
- sizeof(kgsr->gsr_source)))
- return -EFAULT;
- koptval = (char __user *)kgsr;
- koptlen = sizeof(struct group_source_req);
- break;
- }
- case MCAST_MSFILTER:
- {
- struct compat_group_filter __user *gf32 = (void __user *)optval;
- struct group_filter __user *kgf;
- u32 interface, fmode, numsrc;
-
- if (!access_ok(gf32, __COMPAT_GF0_SIZE) ||
- __get_user(interface, &gf32->gf_interface) ||
- __get_user(fmode, &gf32->gf_fmode) ||
- __get_user(numsrc, &gf32->gf_numsrc))
- return -EFAULT;
- koptlen = optlen + sizeof(struct group_filter) -
- sizeof(struct compat_group_filter);
- if (koptlen < GROUP_FILTER_SIZE(numsrc))
- return -EINVAL;
- kgf = compat_alloc_user_space(koptlen);
- if (!access_ok(kgf, koptlen) ||
- __put_user(interface, &kgf->gf_interface) ||
- __put_user(fmode, &kgf->gf_fmode) ||
- __put_user(numsrc, &kgf->gf_numsrc) ||
- copy_in_user(&kgf->gf_group, &gf32->gf_group,
- sizeof(kgf->gf_group)) ||
- (numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist,
- numsrc * sizeof(kgf->gf_slist[0]))))
- return -EFAULT;
- koptval = (char __user *)kgf;
- break;
- }
-
- default:
- break;
- }
- return setsockopt(sock, level, optname, koptval, koptlen);
-}
-EXPORT_SYMBOL(compat_mc_setsockopt);
-
/* Argument list sizes for compat_sys_socketcall */
#define AL(x) ((x) * sizeof(u32))
static unsigned char nas[21] = {