2 * Copyright (c) 2011 NetApp, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/types.h>
33 #ifndef WITHOUT_CAPSICUM
34 #include <sys/capsicum.h>
36 #include <sys/select.h>
50 #define BVM_CONSOLE_PORT 0x220
51 #define BVM_CONS_SIG ('b' << 8 | 'v')
53 static struct termios tio_orig, tio_new;
58 tcsetattr(STDIN_FILENO, TCSANOW, &tio_orig);
64 tcgetattr(STDIN_FILENO, &tio_orig);
67 tcsetattr(STDIN_FILENO, TCSANOW, &tio_new);
73 tty_char_available(void)
79 FD_SET(STDIN_FILENO, &rfds);
82 if (select(STDIN_FILENO + 1, &rfds, NULL, NULL, &tv) > 0) {
94 if (tty_char_available()) {
95 read(STDIN_FILENO, &rb, 1);
103 ttywrite(unsigned char wb)
105 (void) write(STDOUT_FILENO, &wb, 1);
109 console_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
110 uint32_t *eax, void *arg)
113 #ifndef WITHOUT_CAPSICUM
115 cap_ioctl_t cmds[] = { TIOCGETA, TIOCSETA, TIOCGWINSZ };
118 if (bytes == 2 && in) {
124 * Guests might probe this port to look for old ISA devices
125 * using single-byte reads. Return 0xff for those.
127 if (bytes == 1 && in) {
136 #ifndef WITHOUT_CAPSICUM
137 cap_rights_init(&rights, CAP_EVENT, CAP_IOCTL, CAP_READ, CAP_WRITE);
138 if (cap_rights_limit(STDIN_FILENO, &rights) == -1 && errno != ENOSYS)
139 errx(EX_OSERR, "Unable to apply rights for sandbox");
140 if (cap_ioctls_limit(STDIN_FILENO, cmds, nitems(cmds)) == -1 && errno != ENOSYS)
141 errx(EX_OSERR, "Unable to apply rights for sandbox");
155 SYSRES_IO(BVM_CONSOLE_PORT, 4);
157 static struct inout_port consport = {
169 register_inout(&consport);