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fortify-headers/include/poll.h

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Put include guards in the reserved namespace fortify-headers is considered part of the implementation.
2015-03-11 18:55:51 +00:00
#ifndef _FORTIFY_POLL_H
#define _FORTIFY_POLL_H
Add poll() check Not sure if including stddef.h from poll.h is acceptable.
2015-02-28 12:10:41 +00:00
#include_next <poll.h>
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
Restore C++ support
2015-03-13 23:09:15 +00:00
#ifdef __cplusplus
extern "C" {
#endif
Rework fortify implementation to use extern inline Overriding functions with macros is legal in C but a lot of software is not prepared for it. Use the extern inline method to achieve the same result.
2015-03-13 11:00:46 +00:00
#undef poll
Add ifdef guards for C++ code
2015-03-11 09:26:11 +00:00
Rework fortify implementation to use extern inline Overriding functions with macros is legal in C but a lot of software is not prepared for it. Use the extern inline method to achieve the same result.
2015-03-13 11:00:46 +00:00
extern int __poll_orig(struct pollfd *, nfds_t, int)
__asm__(__USER_LABEL_PREFIX__ "poll");
extern __inline __attribute__((__always_inline__,__gnu_inline__))
int poll(struct pollfd *fds, nfds_t nfds, int timeout)
Add poll() check Not sure if including stddef.h from poll.h is acceptable.
2015-02-28 12:10:41 +00:00
{
Use __typeof__(sizeof 0) trickery We cannot pull stddef.h and since fortify already relies on GCC features we can use the above typeof trick to get a usable size_t.
2015-02-28 16:01:26 +00:00
__typeof__(sizeof 0) bos = __builtin_object_size(fds, 0);
Add poll() check Not sure if including stddef.h from poll.h is acceptable.
2015-02-28 12:10:41 +00:00
Remove redundant checks We can never have an array of more than SIZE_MAX/2/sizeof(gid_t) gid_t's.
2015-02-28 20:49:00 +00:00
if (nfds > bos / sizeof(struct pollfd))
Add poll() check Not sure if including stddef.h from poll.h is acceptable.
2015-02-28 12:10:41 +00:00
__builtin_trap();
Rework fortify implementation to use extern inline Overriding functions with macros is legal in C but a lot of software is not prepared for it. Use the extern inline method to achieve the same result.
2015-03-13 11:00:46 +00:00
return __poll_orig(fds, nfds, timeout);
Add poll() check Not sure if including stddef.h from poll.h is acceptable.
2015-02-28 12:10:41 +00:00
}
Add ppoll() check
2015-03-03 14:28:25 +00:00
#ifdef _GNU_SOURCE
Rework fortify implementation to use extern inline Overriding functions with macros is legal in C but a lot of software is not prepared for it. Use the extern inline method to achieve the same result.
2015-03-13 11:00:46 +00:00
#undef ppoll
extern int __ppoll_orig(struct pollfd *, nfds_t, const struct timespec *, const sigset_t *)
__asm__(__USER_LABEL_PREFIX__ "ppoll");
extern __inline __attribute__((__always_inline__,__gnu_inline__))
int ppoll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout, const sigset_t *mask)
Add ppoll() check
2015-03-03 14:28:25 +00:00
{
__typeof__(sizeof 0) bos = __builtin_object_size(fds, 0);
if (nfds > bos / sizeof(struct pollfd))
__builtin_trap();
Rework fortify implementation to use extern inline Overriding functions with macros is legal in C but a lot of software is not prepared for it. Use the extern inline method to achieve the same result.
2015-03-13 11:00:46 +00:00
return __ppoll_orig(fds, nfds, timeout, mask);
Add ppoll() check
2015-03-03 14:28:25 +00:00
}
#endif
Restore C++ support
2015-03-13 23:09:15 +00:00
#ifdef __cplusplus
}
Add ifdef guards for C++ code
2015-03-11 09:26:11 +00:00
#endif
Add poll() check Not sure if including stddef.h from poll.h is acceptable.
2015-02-28 12:10:41 +00:00
#endif
#endif