2011-10-03 19:26:44 +00:00
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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2012-01-10 23:54:05 +00:00
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#include <errno.h>
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2011-10-03 19:26:44 +00:00
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#include <fcntl.h>
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2012-02-15 23:51:16 +00:00
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#include <getopt.h>
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2011-10-03 19:26:44 +00:00
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#include <stdlib.h>
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2011-10-26 00:21:29 +00:00
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#include <termios.h>
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2011-11-29 11:16:40 +00:00
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#include <time.h>
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2012-01-10 23:54:05 +00:00
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#include <unistd.h>
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2011-11-05 10:40:34 +00:00
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#include <sys/mman.h>
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2012-01-10 23:54:05 +00:00
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#include <sys/stat.h>
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2012-01-10 23:54:06 +00:00
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#include <sys/time.h>
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2012-01-10 23:54:05 +00:00
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#include <sys/types.h>
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2011-11-29 11:16:40 +00:00
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#include <linux/types.h>
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2011-10-03 19:26:44 +00:00
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2012-02-15 23:51:16 +00:00
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#include <asm/getopt.h>
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#include <asm/sections.h>
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#include <asm/state.h>
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2011-10-03 19:26:44 +00:00
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#include <os.h>
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/* Operating System Interface */
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ssize_t os_read(int fd, void *buf, size_t count)
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{
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return read(fd, buf, count);
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}
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ssize_t os_write(int fd, const void *buf, size_t count)
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{
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return write(fd, buf, count);
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}
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2011-10-25 11:02:58 +00:00
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off_t os_lseek(int fd, off_t offset, int whence)
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{
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if (whence == OS_SEEK_SET)
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whence = SEEK_SET;
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else if (whence == OS_SEEK_CUR)
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whence = SEEK_CUR;
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else if (whence == OS_SEEK_END)
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whence = SEEK_END;
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else
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os_exit(1);
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return lseek(fd, offset, whence);
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}
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2012-02-21 04:56:58 +00:00
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int os_open(const char *pathname, int os_flags)
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2011-10-03 19:26:44 +00:00
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{
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2012-02-21 04:56:58 +00:00
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int flags;
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switch (os_flags & OS_O_MASK) {
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case OS_O_RDONLY:
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default:
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flags = O_RDONLY;
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break;
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case OS_O_WRONLY:
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flags = O_WRONLY;
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break;
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case OS_O_RDWR:
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flags = O_RDWR;
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break;
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}
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if (os_flags & OS_O_CREAT)
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flags |= O_CREAT;
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return open(pathname, flags, 0777);
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2011-10-03 19:26:44 +00:00
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}
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int os_close(int fd)
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{
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return close(fd);
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}
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void os_exit(int exit_code)
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{
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exit(exit_code);
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}
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2011-10-26 00:21:29 +00:00
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/* Restore tty state when we exit */
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static struct termios orig_term;
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static void os_fd_restore(void)
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{
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tcsetattr(0, TCSANOW, &orig_term);
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}
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/* Put tty into raw mode so <tab> and <ctrl+c> work */
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void os_tty_raw(int fd)
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{
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static int setup = 0;
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struct termios term;
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if (setup)
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return;
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setup = 1;
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/* If not a tty, don't complain */
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if (tcgetattr(fd, &orig_term))
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return;
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term = orig_term;
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term.c_iflag = IGNBRK | IGNPAR;
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term.c_oflag = OPOST | ONLCR;
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term.c_cflag = CS8 | CREAD | CLOCAL;
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term.c_lflag = 0;
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if (tcsetattr(fd, TCSANOW, &term))
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return;
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atexit(os_fd_restore);
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}
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2011-11-05 10:40:34 +00:00
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void *os_malloc(size_t length)
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{
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return mmap(NULL, length, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
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}
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2011-11-29 11:16:40 +00:00
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void os_usleep(unsigned long usec)
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{
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usleep(usec);
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}
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u64 os_get_nsec(void)
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{
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#if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK)
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struct timespec tp;
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if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) {
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struct timeval tv;
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gettimeofday(&tv, NULL);
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tp.tv_sec = tv.tv_sec;
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tp.tv_nsec = tv.tv_usec * 1000;
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}
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return tp.tv_sec * 1000000000ULL + tp.tv_nsec;
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#else
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
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#endif
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}
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2012-02-15 23:51:16 +00:00
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static char *short_opts;
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static struct option *long_opts;
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int os_parse_args(struct sandbox_state *state, int argc, char *argv[])
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{
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struct sb_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
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size_t num_options = __u_boot_sandbox_option_count();
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size_t i;
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int hidden_short_opt;
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size_t si;
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int c;
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if (short_opts || long_opts)
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return 1;
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state->argc = argc;
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state->argv = argv;
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/* dynamically construct the arguments to the system getopt_long */
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short_opts = os_malloc(sizeof(*short_opts) * num_options * 2 + 1);
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long_opts = os_malloc(sizeof(*long_opts) * num_options);
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if (!short_opts || !long_opts)
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return 1;
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/*
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* getopt_long requires "val" to be unique (since that is what the
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* func returns), so generate unique values automatically for flags
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* that don't have a short option. pick 0x100 as that is above the
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* single byte range (where ASCII/ISO-XXXX-X charsets live).
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*/
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hidden_short_opt = 0x100;
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si = 0;
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for (i = 0; i < num_options; ++i) {
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long_opts[i].name = sb_opt[i]->flag;
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long_opts[i].has_arg = sb_opt[i]->has_arg ?
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required_argument : no_argument;
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long_opts[i].flag = NULL;
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if (sb_opt[i]->flag_short) {
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short_opts[si++] = long_opts[i].val = sb_opt[i]->flag_short;
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if (long_opts[i].has_arg == required_argument)
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short_opts[si++] = ':';
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} else
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long_opts[i].val = sb_opt[i]->flag_short = hidden_short_opt++;
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}
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short_opts[si] = '\0';
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/* we need to handle output ourselves since u-boot provides printf */
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opterr = 0;
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/*
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* walk all of the options the user gave us on the command line,
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* figure out what u-boot option structure they belong to (via
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* the unique short val key), and call the appropriate callback.
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*/
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while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
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for (i = 0; i < num_options; ++i) {
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if (sb_opt[i]->flag_short == c) {
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if (sb_opt[i]->callback(state, optarg)) {
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state->parse_err = sb_opt[i]->flag;
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return 0;
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}
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break;
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}
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}
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if (i == num_options) {
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/*
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* store the faulting flag for later display. we have to
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* store the flag itself as the getopt parsing itself is
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* tricky: need to handle the following flags (assume all
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* of the below are unknown):
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* -a optopt='a' optind=<next>
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* -abbbb optopt='a' optind=<this>
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* -aaaaa optopt='a' optind=<this>
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* --a optopt=0 optind=<this>
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* as you can see, it is impossible to determine the exact
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* faulting flag without doing the parsing ourselves, so
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* we just report the specific flag that failed.
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*/
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if (optopt) {
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static char parse_err[3] = { '-', 0, '\0', };
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parse_err[1] = optopt;
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state->parse_err = parse_err;
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} else
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state->parse_err = argv[optind - 1];
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break;
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}
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}
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return 0;
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}
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