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#include <unistd.h>
#ifdef _THREAD_SAFE
#include <pthread.h>
#include "pthread_private.h"
int
dup(int fd)
{
int ret;
/* Lock the file descriptor: */
if ((ret = _thread_fd_lock(fd, FD_RDWR, NULL, __FILE__, __LINE__)) == 0) {
/* Perform the 'dup' syscall: */
if ((ret = _thread_sys_dup(fd)) < 0) {
}
/* Initialise the file descriptor table entry: */
else if (_thread_fd_table_init(ret) != 0) {
/* Quietly close the file: */
_thread_sys_close(ret);
/* Reset the file descriptor: */
ret = -1;
} else {
/*
* Save the file open flags so that they can be
* checked later:
*/
_thread_fd_table[ret]->flags = _thread_fd_table[fd]->flags;
}
/* Unlock the file descriptor: */
_thread_fd_unlock(fd, FD_RDWR);
}
/* Return the completion status: */
return (ret);
}
#endif
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