48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
#ifndef _FORTIFY_POLL_H
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#define _FORTIFY_POLL_H
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#include_next <poll.h>
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#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
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#ifndef __cplusplus
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static inline __attribute__ ((always_inline))
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int
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__fortify_poll(struct pollfd *fds, nfds_t nfds, int timeout)
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{
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__typeof__(sizeof 0) bos = __builtin_object_size(fds, 0);
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if (nfds > bos / sizeof(struct pollfd))
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__builtin_trap();
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return poll(fds, nfds, timeout);
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}
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#ifdef _GNU_SOURCE
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static inline __attribute__ ((always_inline))
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int
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__fortify_ppoll(struct pollfd *fds, nfds_t nfds,
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const struct timespec *timeout, const sigset_t *mask)
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{
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__typeof__(sizeof 0) bos = __builtin_object_size(fds, 0);
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if (nfds > bos / sizeof(struct pollfd))
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__builtin_trap();
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return ppoll(fds, nfds, timeout, mask);
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}
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#endif
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#undef poll
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#define poll(fds, nfds, timeout) __fortify_poll(fds, nfds, timeout)
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#ifdef _GNU_SOURCE
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#undef ppoll
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#define ppoll(fds, nfds, timeout, mask) __fortify_ppoll(fds, nfds, timeout, mask)
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#endif
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#endif
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#endif
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#endif
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