cmd/zlogin/zlogin.c

295 	while ((err = read(masterfd, &c, 1)) == 1) {
597  * If the write to outfd fails, we'll try to read from infd in an attempt
613 	nbytes = read(STDIN_FILENO, ibuf, ZLOGIN_RDBUFSIZ);
617 	if (nbytes == -1)	/* The read was interrupted. */
620 	/* 0 read means EOF, close the pipe to the child */
653 			 * draining the other pipe.  We can try to read some of
655 			 * application can continue to make progress.  The read
666 				if ((ln = read(infd, obuf, ZLOGIN_BUFSIZ)) > 0)
690  * zone that it is talking to.  This can happen when we read from zlogin's
693  * the write, it would never read the application's stdout/stderr so the
700  * read from our stdin.  If the pipe already is pretty full, we bypass the read
703  * ready to read on STDIN_FILENO.  We return -1 if there is a problem, 1 if
705  * read/written any data into the pipe on this iteration).
730 	cc = read(STDIN_FILENO, ibuf, ZLOGIN_RDBUFSIZ);
734 	if (cc == -1)	/* The read was interrupted. */
737 	/* 0 read means EOF, close the pipe to the child */
754  * has exited) so we loop to make sure we have written all of the data we read.
763 	cc = read(in_fd, ibuf, ZLOGIN_BUFSIZ);
768 	if (cc == -1)	/* The read was interrupted. */
815 	/* read from stdout of zone and write to stdout of global zone */
819 	/* read from stderr of zone and write to stderr of global zone */
823 	/* read from stdin of global zone and write to stdin of zone */
827 	/* read from signalling pipe so we know when child dies */
955 		if ((cc = read(stdout_fd, ibuf, ZLOGIN_BUFSIZ)) > 0) {
962 		if ((cc = read(stderr_fd, ibuf, ZLOGIN_BUFSIZ)) > 0) {
2170 		 * spawned process does a write/read it maps to the slave