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Add poll() check 

Not sure if including stddef.h from poll.h is acceptable.
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sin 2015-02-28 12:10:41 +00:00
parent 195fffa420
commit 2ea31ca96f
1 changed files with 25 additions and 0 deletions
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include/poll.h Normal file
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#ifndef FORTIFY_POLL_H_
#define FORTIFY_POLL_H_
#include_next <stddef.h>
#include_next <poll.h>
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
static inline __attribute__ ((always_inline))
int
__fortify_poll(struct pollfd *fds, nfds_t nfds, int timeout)
{
size_t bos = __builtin_object_size(fds, 0);
if (bos != -1 && nfds > bos / sizeof(struct pollfd))
__builtin_trap();
return poll(fds, nfds, timeout);
}
#undef poll
#define poll(fds, nfds, timeout) __fortify_poll(fds, nfds, timeout)
#endif
#endif