/usr/include/diet/sys/select.h is in dietlibc-dev 0.33~cvs20111108-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | #ifndef _SYS_SELECT_H
#define _SYS_SELECT_H
#include <string.h>
#include <signal.h>
__BEGIN_DECLS
typedef long int fd_mask;
#define NFDBITS (8 * sizeof(unsigned long))
#define FD_SETSIZE 1024
#define __FDSET_LONGS (FD_SETSIZE/NFDBITS)
#define __FDELT(d) ((d) / NFDBITS)
#define __FDMASK(d) (1UL << ((d) % NFDBITS))
typedef struct {
unsigned long fds_bits [__FDSET_LONGS];
} fd_set;
#define FD_SET(d, set) ((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
#define FD_CLR(d, set) ((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
#define FD_ISSET(d, set) (((set)->fds_bits[__FDELT(d)] & __FDMASK(d)) != 0)
#define FD_ZERO(set) \
((void) memset ((void*) (set), 0, sizeof (fd_set)))
int select(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout) __THROW;
int pselect(int n, fd_set* readfds, fd_set* writefds, fd_set* exceptfds,
const struct timespec *timeout, const sigset_t *sigmask) __THROW;
__END_DECLS
#endif
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