bsd/kern/kern_descrip.c

2222  * close
2224  * Description:	The implementation of the close(2) system call
2227  *					the close is to occur
2235  *					close function
2238 close(proc_t p, struct close_args *uap, int32_t *retval)
2275  *					the close is to occur
2280  *		EBADF			fd already in close wait state
2282  *					close function
2326 			 * call out to allow 3rd party notification of close.
2376 			panic("close with reserved fd returns with freed fd:%d: proc: %p", fd, p);
3610  *		close that destroys the associate fileproc.  The caller should
3671  *		close that destroys the associate fileproc.  The caller should
3736  *		close that destroys the associate fileproc.  The caller should
3817  *		the last attempt to close a file).
3831  *		Technically, the close reference is supposed to be protected
3836  *		block each close attempt, rather than merely the last close.
3839  *		device to have an intermediate close followed by an open to
4088  * Description:	Perform close-on-exec processing for all files in a process
4089  *		that are either marked as close-on-exec, or which were in the
4094  *		close-on-exec.
4134 			 * not marked close-on-exec.
4486  *					close function
4495  *		device on last close of that device.
4533  *					close function
4562 	 * POSIX record locking dictates that any close releases ALL
4625  * Notes:	For character devices, this occurs on the last close of the
4627  *		close to prevent fd's from being closed out from under
4641 	fp->f_iocount-- ; /* (the one the close holds) */
5305  * Description:	Generic fileops close indirected through the fileops pointer
5309  *						file to close
5313  *		!0				Errno from close