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Add sendto() check

This commit is contained in:
sin 2015-02-28 16:56:21 +00:00
parent 958ead636c
commit 91db6f5899
1 changed files with 16 additions and 1 deletions
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17
include/sys/socket.h
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@ -18,7 +18,8 @@ __fortify_recv(int sockfd, void *buf, size_t n, int flags)
static inline __attribute__ ((always_inline))
ssize_t
__fortify_recvfrom(int sockfd, void *buf, size_t n, int flags, struct sockaddr *sa, socklen_t *salen)
__fortify_recvfrom(int sockfd, void *buf, size_t n, int flags,
struct sockaddr *sa, socklen_t *salen)
{
size_t bos = __builtin_object_size(buf, 0);
@ -38,12 +39,26 @@ __fortify_send(int sockfd, const void *buf, size_t n, int flags)
return send(sockfd, buf, n, flags);
}
static inline __attribute__ ((always_inline))
ssize_t
__fortify_sendto(int sockfd, const void *buf, size_t n, int flags,
const struct sockaddr *sa, socklen_t salen)
{
size_t bos = __builtin_object_size(buf, 0);
if (n > bos)
__builtin_trap();
return sendto(sockfd, buf, n, flags, sa, salen);
}
#undef recv
#define recv(sockfd, buf, n, flags) __fortify_recv(sockfd, buf, n, flags)
#undef recvfrom
#define recvfrom(sockfd, buf, n, flags, sa, salen) __fortify_recvfrom(sockfd, buf, n, flags, sa, salen)
#undef send
#define send(sockfd, buf, n, flags) __fortify_send(sockfd, buf, n, flags)
#undef sendto
#define sendto(sockfd, buf, n, flags, sa, salen) __fortify_sendto(sockfd, buf, n, flags, sa, salen)
#endif