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/* COVERAGE: dup dup2 dup3 */
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
int main()
{
dup(2);
//staptest// dup (2) = NNNN
dup(256);
//staptest// dup (256) = -9 (EBADF)
dup2(3, 4);
//staptest// dup2 (3, 4) = 4
dup2(255, 256);
//staptest// dup2 (255, 256) = -9 (EBADF)
/* weird corner case oldfd == newfd */
dup2(1, 1);
//staptest// dup2 (1, 1) = 1
#ifdef O_CLOEXEC
dup3 (4, 5, O_CLOEXEC);
//staptest// dup3 (4, 5, O_CLOEXEC) = 5
dup3 (256, 255, O_CLOEXEC);
//staptest// dup3 (256, 255, O_CLOEXEC) = -9 (EBADF)
dup3 (5, 6, 666);
//staptest// dup3 (5, 6, UNKNOWN) = -22 (EINVAL)
/* corner case not valid for dup3 */
dup3 (1, 1, O_CLOEXEC);
//staptest// dup3 (1, 1, O_CLOEXEC) = -22 (EINVAL)
#endif
return 0;
}
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