forked from luck/tmp_suning_uos_patched
b7058842c9
This provides safety against negative optlen at the type level instead of depending upon (sometimes non-trivial) checks against this sprinkled all over the the place, in each and every implementation. Based upon work done by Arjan van de Ven and feedback from Linus Torvalds. Signed-off-by: David S. Miller <davem@davemloft.net>
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
#ifndef NET_COMPAT_H
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#define NET_COMPAT_H
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struct sock;
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#if defined(CONFIG_COMPAT)
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#include <linux/compat.h>
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struct compat_msghdr {
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compat_uptr_t msg_name; /* void * */
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compat_int_t msg_namelen;
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compat_uptr_t msg_iov; /* struct compat_iovec * */
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compat_size_t msg_iovlen;
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compat_uptr_t msg_control; /* void * */
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compat_size_t msg_controllen;
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compat_uint_t msg_flags;
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};
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struct compat_cmsghdr {
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compat_size_t cmsg_len;
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compat_int_t cmsg_level;
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compat_int_t cmsg_type;
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};
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extern int compat_sock_get_timestamp(struct sock *, struct timeval __user *);
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extern int compat_sock_get_timestampns(struct sock *, struct timespec __user *);
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#else /* defined(CONFIG_COMPAT) */
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#define compat_msghdr msghdr /* to avoid compiler warnings */
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#endif /* defined(CONFIG_COMPAT) */
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extern int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *);
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extern int verify_compat_iovec(struct msghdr *, struct iovec *, struct sockaddr *, int);
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extern asmlinkage long compat_sys_sendmsg(int,struct compat_msghdr __user *,unsigned);
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extern asmlinkage long compat_sys_recvmsg(int,struct compat_msghdr __user *,unsigned);
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extern asmlinkage long compat_sys_getsockopt(int, int, int, char __user *, int __user *);
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extern int put_cmsg_compat(struct msghdr*, int, int, int, void *);
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extern int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *, unsigned char *, int);
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extern int compat_mc_setsockopt(struct sock *, int, int, char __user *, unsigned int,
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int (*)(struct sock *, int, int, char __user *, unsigned int));
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extern int compat_mc_getsockopt(struct sock *, int, int, char __user *,
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int __user *, int (*)(struct sock *, int, int, char __user *,
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int __user *));
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#endif /* NET_COMPAT_H */
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