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68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
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/* $OpenBSD$ */
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/*
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* Copyright (c) 2017 Nicholas Marriott <nicholas.marriott@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/tty.h>
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#include <fcntl.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include <util.h>
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int pty_open(int *);
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pid_t pty_fork(int, int *, char *, size_t, struct winsize *);
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int
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pty_open(int *fd)
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{
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*fd = open(PATH_PTMDEV, O_RDWR|O_CLOEXEC);
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if (*fd < 0)
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return (-1);
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return (0);
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}
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pid_t
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pty_fork(int ptmfd, int *fd, char *name, size_t namelen, struct winsize *ws)
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{
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struct ptmget ptm;
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pid_t pid;
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if ((ioctl(ptmfd, PTMGET, &ptm) == -1))
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return (-1);
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strlcpy(name, ptm.sn, namelen);
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ioctl(ptm.sfd, TIOCSWINSZ, ws);
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switch (pid = fork()) {
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case -1:
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close(ptm.cfd);
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close(ptm.sfd);
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return (-1);
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case 0:
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close(ptm.cfd);
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login_tty(ptm.sfd);
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return (0);
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}
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*fd = ptm.cfd;
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close(ptm.sfd);
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return (pid);
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}
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