2 * Copyright (c) 2011 The Chromium OS Authors.
3 * See file CREDITS for list of people who contributed to this
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 #include <sys/types.h>
32 /* Operating System Interface */
34 ssize_t os_read(int fd, void *buf, size_t count)
36 return read(fd, buf, count);
39 ssize_t os_write(int fd, const void *buf, size_t count)
41 return write(fd, buf, count);
44 int os_open(const char *pathname, int flags)
46 return open(pathname, flags);
54 void os_exit(int exit_code)
59 /* Restore tty state when we exit */
60 static struct termios orig_term;
62 static void os_fd_restore(void)
64 tcsetattr(0, TCSANOW, &orig_term);
67 /* Put tty into raw mode so <tab> and <ctrl+c> work */
68 void os_tty_raw(int fd)
77 /* If not a tty, don't complain */
78 if (tcgetattr(fd, &orig_term))
82 term.c_iflag = IGNBRK | IGNPAR;
83 term.c_oflag = OPOST | ONLCR;
84 term.c_cflag = CS8 | CREAD | CLOCAL;
86 if (tcsetattr(fd, TCSANOW, &term))
89 atexit(os_fd_restore);
92 void *os_malloc(size_t length)
94 return mmap(NULL, length, PROT_READ | PROT_WRITE,
95 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);