Simon Glass | 7a9219c | 2011-10-03 19:26:44 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2011 The Chromium OS Authors. |
| 3 | * See file CREDITS for list of people who contributed to this |
| 4 | * project. |
| 5 | * |
| 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. |
| 10 | * |
| 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. |
| 15 | * |
| 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, |
| 19 | * MA 02111-1307 USA |
| 20 | */ |
| 21 | |
Simon Glass | e101247 | 2012-01-10 15:54:05 -0800 | [diff] [blame] | 22 | #include <errno.h> |
Simon Glass | 7a9219c | 2011-10-03 19:26:44 +0000 | [diff] [blame] | 23 | #include <fcntl.h> |
| 24 | #include <stdlib.h> |
Mike Frysinger | ab06a75 | 2011-10-26 00:21:29 +0000 | [diff] [blame] | 25 | #include <termios.h> |
Matthias Weisser | d99a687 | 2011-11-29 12:16:40 +0100 | [diff] [blame] | 26 | #include <time.h> |
Simon Glass | e101247 | 2012-01-10 15:54:05 -0800 | [diff] [blame] | 27 | #include <unistd.h> |
Matthias Weisser | 21899b1 | 2011-11-05 11:40:34 +0100 | [diff] [blame] | 28 | #include <sys/mman.h> |
Simon Glass | e101247 | 2012-01-10 15:54:05 -0800 | [diff] [blame] | 29 | #include <sys/stat.h> |
Simon Glass | 3bdf56b | 2012-01-10 15:54:06 -0800 | [diff] [blame] | 30 | #include <sys/time.h> |
Simon Glass | e101247 | 2012-01-10 15:54:05 -0800 | [diff] [blame] | 31 | #include <sys/types.h> |
Matthias Weisser | d99a687 | 2011-11-29 12:16:40 +0100 | [diff] [blame] | 32 | #include <linux/types.h> |
Simon Glass | 7a9219c | 2011-10-03 19:26:44 +0000 | [diff] [blame] | 33 | |
| 34 | #include <os.h> |
| 35 | |
| 36 | /* Operating System Interface */ |
| 37 | |
| 38 | ssize_t os_read(int fd, void *buf, size_t count) |
| 39 | { |
| 40 | return read(fd, buf, count); |
| 41 | } |
| 42 | |
| 43 | ssize_t os_write(int fd, const void *buf, size_t count) |
| 44 | { |
| 45 | return write(fd, buf, count); |
| 46 | } |
| 47 | |
Mike Frysinger | e2dcefc | 2011-10-25 13:02:58 +0200 | [diff] [blame] | 48 | off_t os_lseek(int fd, off_t offset, int whence) |
| 49 | { |
| 50 | if (whence == OS_SEEK_SET) |
| 51 | whence = SEEK_SET; |
| 52 | else if (whence == OS_SEEK_CUR) |
| 53 | whence = SEEK_CUR; |
| 54 | else if (whence == OS_SEEK_END) |
| 55 | whence = SEEK_END; |
| 56 | else |
| 57 | os_exit(1); |
| 58 | return lseek(fd, offset, whence); |
| 59 | } |
| 60 | |
Simon Glass | d916515 | 2012-02-20 23:56:58 -0500 | [diff] [blame] | 61 | int os_open(const char *pathname, int os_flags) |
Simon Glass | 7a9219c | 2011-10-03 19:26:44 +0000 | [diff] [blame] | 62 | { |
Simon Glass | d916515 | 2012-02-20 23:56:58 -0500 | [diff] [blame] | 63 | int flags; |
| 64 | |
| 65 | switch (os_flags & OS_O_MASK) { |
| 66 | case OS_O_RDONLY: |
| 67 | default: |
| 68 | flags = O_RDONLY; |
| 69 | break; |
| 70 | |
| 71 | case OS_O_WRONLY: |
| 72 | flags = O_WRONLY; |
| 73 | break; |
| 74 | |
| 75 | case OS_O_RDWR: |
| 76 | flags = O_RDWR; |
| 77 | break; |
| 78 | } |
| 79 | |
| 80 | if (os_flags & OS_O_CREAT) |
| 81 | flags |= O_CREAT; |
| 82 | |
| 83 | return open(pathname, flags, 0777); |
Simon Glass | 7a9219c | 2011-10-03 19:26:44 +0000 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | int os_close(int fd) |
| 87 | { |
| 88 | return close(fd); |
| 89 | } |
| 90 | |
| 91 | void os_exit(int exit_code) |
| 92 | { |
| 93 | exit(exit_code); |
| 94 | } |
Mike Frysinger | ab06a75 | 2011-10-26 00:21:29 +0000 | [diff] [blame] | 95 | |
| 96 | /* Restore tty state when we exit */ |
| 97 | static struct termios orig_term; |
| 98 | |
| 99 | static void os_fd_restore(void) |
| 100 | { |
| 101 | tcsetattr(0, TCSANOW, &orig_term); |
| 102 | } |
| 103 | |
| 104 | /* Put tty into raw mode so <tab> and <ctrl+c> work */ |
| 105 | void os_tty_raw(int fd) |
| 106 | { |
| 107 | static int setup = 0; |
| 108 | struct termios term; |
| 109 | |
| 110 | if (setup) |
| 111 | return; |
| 112 | setup = 1; |
| 113 | |
| 114 | /* If not a tty, don't complain */ |
| 115 | if (tcgetattr(fd, &orig_term)) |
| 116 | return; |
| 117 | |
| 118 | term = orig_term; |
| 119 | term.c_iflag = IGNBRK | IGNPAR; |
| 120 | term.c_oflag = OPOST | ONLCR; |
| 121 | term.c_cflag = CS8 | CREAD | CLOCAL; |
| 122 | term.c_lflag = 0; |
| 123 | if (tcsetattr(fd, TCSANOW, &term)) |
| 124 | return; |
| 125 | |
| 126 | atexit(os_fd_restore); |
| 127 | } |
Matthias Weisser | 21899b1 | 2011-11-05 11:40:34 +0100 | [diff] [blame] | 128 | |
| 129 | void *os_malloc(size_t length) |
| 130 | { |
| 131 | return mmap(NULL, length, PROT_READ | PROT_WRITE, |
| 132 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| 133 | } |
Matthias Weisser | d99a687 | 2011-11-29 12:16:40 +0100 | [diff] [blame] | 134 | |
| 135 | void os_usleep(unsigned long usec) |
| 136 | { |
| 137 | usleep(usec); |
| 138 | } |
| 139 | |
| 140 | u64 os_get_nsec(void) |
| 141 | { |
| 142 | #if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK) |
| 143 | struct timespec tp; |
| 144 | if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) { |
| 145 | struct timeval tv; |
| 146 | |
| 147 | gettimeofday(&tv, NULL); |
| 148 | tp.tv_sec = tv.tv_sec; |
| 149 | tp.tv_nsec = tv.tv_usec * 1000; |
| 150 | } |
| 151 | return tp.tv_sec * 1000000000ULL + tp.tv_nsec; |
| 152 | #else |
| 153 | struct timeval tv; |
| 154 | gettimeofday(&tv, NULL); |
| 155 | return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000; |
| 156 | #endif |
| 157 | } |