2 * Copyright (c) 2011 The Chromium OS Authors.
3 * SPDX-License-Identifier: GPL-2.0+
20 #include <sys/types.h>
21 #include <linux/types.h>
23 #include <asm/getopt.h>
24 #include <asm/sections.h>
25 #include <asm/state.h>
29 /* Operating System Interface */
32 size_t length; /* number of bytes in the block */
35 ssize_t os_read(int fd, void *buf, size_t count)
37 return read(fd, buf, count);
40 ssize_t os_read_no_block(int fd, void *buf, size_t count)
42 const int flags = fcntl(fd, F_GETFL, 0);
44 fcntl(fd, F_SETFL, flags | O_NONBLOCK);
45 return os_read(fd, buf, count);
48 ssize_t os_write(int fd, const void *buf, size_t count)
50 return write(fd, buf, count);
53 off_t os_lseek(int fd, off_t offset, int whence)
55 if (whence == OS_SEEK_SET)
57 else if (whence == OS_SEEK_CUR)
59 else if (whence == OS_SEEK_END)
63 return lseek(fd, offset, whence);
66 int os_open(const char *pathname, int os_flags)
70 switch (os_flags & OS_O_MASK) {
85 if (os_flags & OS_O_CREAT)
88 return open(pathname, flags, 0777);
96 int os_unlink(const char *pathname)
98 return unlink(pathname);
101 void os_exit(int exit_code)
106 /* Restore tty state when we exit */
107 static struct termios orig_term;
108 static bool term_setup;
110 void os_fd_restore(void)
113 tcsetattr(0, TCSANOW, &orig_term);
118 /* Put tty into raw mode so <tab> and <ctrl+c> work */
119 void os_tty_raw(int fd, bool allow_sigs)
126 /* If not a tty, don't complain */
127 if (tcgetattr(fd, &orig_term))
131 term.c_iflag = IGNBRK | IGNPAR;
132 term.c_oflag = OPOST | ONLCR;
133 term.c_cflag = CS8 | CREAD | CLOCAL;
134 term.c_lflag = allow_sigs ? ISIG : 0;
135 if (tcsetattr(fd, TCSANOW, &term))
139 atexit(os_fd_restore);
142 void *os_malloc(size_t length)
144 struct os_mem_hdr *hdr;
146 hdr = mmap(NULL, length + sizeof(*hdr), PROT_READ | PROT_WRITE,
147 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
148 if (hdr == MAP_FAILED)
150 hdr->length = length;
155 void os_free(void *ptr)
157 struct os_mem_hdr *hdr = ptr;
161 munmap(hdr, hdr->length + sizeof(*hdr));
164 void *os_realloc(void *ptr, size_t length)
166 struct os_mem_hdr *hdr = ptr;
171 buf = os_malloc(length);
175 if (length > hdr->length)
176 length = hdr->length;
177 memcpy(buf, ptr, length);
185 void os_usleep(unsigned long usec)
190 uint64_t __attribute__((no_instrument_function)) os_get_nsec(void)
192 #if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK)
194 if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) {
197 gettimeofday(&tv, NULL);
198 tp.tv_sec = tv.tv_sec;
199 tp.tv_nsec = tv.tv_usec * 1000;
201 return tp.tv_sec * 1000000000ULL + tp.tv_nsec;
204 gettimeofday(&tv, NULL);
205 return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
209 static char *short_opts;
210 static struct option *long_opts;
212 int os_parse_args(struct sandbox_state *state, int argc, char *argv[])
214 struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
215 size_t num_options = __u_boot_sandbox_option_count();
218 int hidden_short_opt;
223 if (short_opts || long_opts)
229 /* dynamically construct the arguments to the system getopt_long */
230 short_opts = os_malloc(sizeof(*short_opts) * num_options * 2 + 1);
231 long_opts = os_malloc(sizeof(*long_opts) * num_options);
232 if (!short_opts || !long_opts)
236 * getopt_long requires "val" to be unique (since that is what the
237 * func returns), so generate unique values automatically for flags
238 * that don't have a short option. pick 0x100 as that is above the
239 * single byte range (where ASCII/ISO-XXXX-X charsets live).
241 hidden_short_opt = 0x100;
243 for (i = 0; i < num_options; ++i) {
244 long_opts[i].name = sb_opt[i]->flag;
245 long_opts[i].has_arg = sb_opt[i]->has_arg ?
246 required_argument : no_argument;
247 long_opts[i].flag = NULL;
249 if (sb_opt[i]->flag_short) {
250 short_opts[si++] = long_opts[i].val = sb_opt[i]->flag_short;
251 if (long_opts[i].has_arg == required_argument)
252 short_opts[si++] = ':';
254 long_opts[i].val = sb_opt[i]->flag_short = hidden_short_opt++;
256 short_opts[si] = '\0';
258 /* we need to handle output ourselves since u-boot provides printf */
262 * walk all of the options the user gave us on the command line,
263 * figure out what u-boot option structure they belong to (via
264 * the unique short val key), and call the appropriate callback.
266 while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
267 for (i = 0; i < num_options; ++i) {
268 if (sb_opt[i]->flag_short == c) {
269 if (sb_opt[i]->callback(state, optarg)) {
270 state->parse_err = sb_opt[i]->flag;
276 if (i == num_options) {
278 * store the faulting flag for later display. we have to
279 * store the flag itself as the getopt parsing itself is
280 * tricky: need to handle the following flags (assume all
281 * of the below are unknown):
282 * -a optopt='a' optind=<next>
283 * -abbbb optopt='a' optind=<this>
284 * -aaaaa optopt='a' optind=<this>
285 * --a optopt=0 optind=<this>
286 * as you can see, it is impossible to determine the exact
287 * faulting flag without doing the parsing ourselves, so
288 * we just report the specific flag that failed.
291 static char parse_err[3] = { '-', 0, '\0', };
292 parse_err[1] = optopt;
293 state->parse_err = parse_err;
295 state->parse_err = argv[optind - 1];
303 void os_dirent_free(struct os_dirent_node *node)
305 struct os_dirent_node *next;
314 int os_dirent_ls(const char *dirname, struct os_dirent_node **headp)
316 struct dirent entry, *result;
317 struct os_dirent_node *head, *node, *next;
325 dir = opendir(dirname);
329 /* Create a buffer for the maximum filename length */
330 len = sizeof(entry.d_name) + strlen(dirname) + 2;
337 for (node = head = NULL;; node = next) {
338 ret = readdir_r(dir, &entry, &result);
341 next = malloc(sizeof(*node) + strlen(entry.d_name) + 1);
343 os_dirent_free(head);
348 strcpy(next->name, entry.d_name);
349 switch (entry.d_type) {
351 next->type = OS_FILET_REG;
354 next->type = OS_FILET_DIR;
357 next->type = OS_FILET_LNK;
361 snprintf(fname, len, "%s/%s", dirname, next->name);
362 if (!stat(fname, &buf))
363 next->size = buf.st_size;
377 const char *os_dirent_typename[OS_FILET_COUNT] = {
384 const char *os_dirent_get_typename(enum os_dirent_t type)
386 if (type >= 0 && type < OS_FILET_COUNT)
387 return os_dirent_typename[type];
389 return os_dirent_typename[OS_FILET_UNKNOWN];
392 int os_get_filesize(const char *fname, loff_t *size)
397 ret = stat(fname, &buf);
409 void os_puts(const char *str)
415 int os_write_ram_buf(const char *fname)
417 struct sandbox_state *state = state_get_current();
420 fd = open(fname, O_CREAT | O_WRONLY, 0777);
423 ret = write(fd, state->ram_buf, state->ram_size);
425 if (ret != state->ram_size)
431 int os_read_ram_buf(const char *fname)
433 struct sandbox_state *state = state_get_current();
437 ret = os_get_filesize(fname, &size);
440 if (size != state->ram_size)
442 fd = open(fname, O_RDONLY);
446 ret = read(fd, state->ram_buf, state->ram_size);
448 if (ret != state->ram_size)
454 static int make_exec(char *fname, const void *data, int size)
458 strcpy(fname, "/tmp/u-boot.jump.XXXXXX");
462 if (write(fd, data, size) < 0)
465 if (chmod(fname, 0777))
471 static int add_args(char ***argvp, const char *add_args[], int count)
476 for (argv = *argvp, argc = 0; (*argvp)[argc]; argc++)
479 argv = malloc((argc + count + 1) * sizeof(char *));
481 printf("Out of memory for %d argv\n", count);
484 memcpy(argv, *argvp, argc * sizeof(char *));
485 memcpy(argv + argc, add_args, count * sizeof(char *));
486 argv[argc + count] = NULL;
492 int os_jump_to_image(const void *dest, int size)
494 struct sandbox_state *state = state_get_current();
495 char fname[30], mem_fname[30];
497 const char *extra_args[5];
498 char **argv = state->argv;
503 err = make_exec(fname, dest, size);
507 strcpy(mem_fname, "/tmp/u-boot.mem.XXXXXX");
508 fd = mkstemp(mem_fname);
512 err = os_write_ram_buf(mem_fname);
518 extra_args[0] = "-j";
519 extra_args[1] = fname;
520 extra_args[2] = "-m";
521 extra_args[3] = mem_fname;
522 extra_args[4] = "--rm_memory";
523 err = add_args(&argv, extra_args,
524 sizeof(extra_args) / sizeof(extra_args[0]));
529 for (i = 0; argv[i]; i++)
530 printf("%d %s\n", i, argv[i]);
536 err = execv(fname, argv);
541 return unlink(fname);
544 void os_localtime(struct rtc_time *rt)
546 time_t t = time(NULL);
550 rt->tm_sec = tm->tm_sec;
551 rt->tm_min = tm->tm_min;
552 rt->tm_hour = tm->tm_hour;
553 rt->tm_mday = tm->tm_mday;
554 rt->tm_mon = tm->tm_mon + 1;
555 rt->tm_year = tm->tm_year + 1900;
556 rt->tm_wday = tm->tm_wday;
557 rt->tm_yday = tm->tm_yday;
558 rt->tm_isdst = tm->tm_isdst;