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>
28 /* Operating System Interface */
31 size_t length; /* number of bytes in the block */
34 ssize_t os_read(int fd, void *buf, size_t count)
36 return read(fd, buf, count);
39 ssize_t os_read_no_block(int fd, void *buf, size_t count)
41 const int flags = fcntl(fd, F_GETFL, 0);
43 fcntl(fd, F_SETFL, flags | O_NONBLOCK);
44 return os_read(fd, buf, count);
47 ssize_t os_write(int fd, const void *buf, size_t count)
49 return write(fd, buf, count);
52 off_t os_lseek(int fd, off_t offset, int whence)
54 if (whence == OS_SEEK_SET)
56 else if (whence == OS_SEEK_CUR)
58 else if (whence == OS_SEEK_END)
62 return lseek(fd, offset, whence);
65 int os_open(const char *pathname, int os_flags)
69 switch (os_flags & OS_O_MASK) {
84 if (os_flags & OS_O_CREAT)
87 return open(pathname, flags, 0777);
95 int os_unlink(const char *pathname)
97 return unlink(pathname);
100 void os_exit(int exit_code)
105 /* Restore tty state when we exit */
106 static struct termios orig_term;
107 static bool term_setup;
109 static void os_fd_restore(void)
112 tcsetattr(0, TCSANOW, &orig_term);
115 /* Put tty into raw mode so <tab> and <ctrl+c> work */
116 void os_tty_raw(int fd, bool allow_sigs)
124 /* If not a tty, don't complain */
125 if (tcgetattr(fd, &orig_term))
129 term.c_iflag = IGNBRK | IGNPAR;
130 term.c_oflag = OPOST | ONLCR;
131 term.c_cflag = CS8 | CREAD | CLOCAL;
132 term.c_lflag = allow_sigs ? ISIG : 0;
133 if (tcsetattr(fd, TCSANOW, &term))
136 atexit(os_fd_restore);
139 void *os_malloc(size_t length)
141 struct os_mem_hdr *hdr;
143 hdr = mmap(NULL, length + sizeof(*hdr), PROT_READ | PROT_WRITE,
144 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
145 if (hdr == MAP_FAILED)
147 hdr->length = length;
152 void os_free(void *ptr)
154 struct os_mem_hdr *hdr = ptr;
158 munmap(hdr, hdr->length + sizeof(*hdr));
161 void *os_realloc(void *ptr, size_t length)
163 struct os_mem_hdr *hdr = ptr;
168 buf = os_malloc(length);
172 if (length > hdr->length)
173 length = hdr->length;
174 memcpy(buf, ptr, length);
182 void os_usleep(unsigned long usec)
187 uint64_t __attribute__((no_instrument_function)) os_get_nsec(void)
189 #if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK)
191 if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) {
194 gettimeofday(&tv, NULL);
195 tp.tv_sec = tv.tv_sec;
196 tp.tv_nsec = tv.tv_usec * 1000;
198 return tp.tv_sec * 1000000000ULL + tp.tv_nsec;
201 gettimeofday(&tv, NULL);
202 return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
206 static char *short_opts;
207 static struct option *long_opts;
209 int os_parse_args(struct sandbox_state *state, int argc, char *argv[])
211 struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
212 size_t num_options = __u_boot_sandbox_option_count();
215 int hidden_short_opt;
220 if (short_opts || long_opts)
226 /* dynamically construct the arguments to the system getopt_long */
227 short_opts = os_malloc(sizeof(*short_opts) * num_options * 2 + 1);
228 long_opts = os_malloc(sizeof(*long_opts) * num_options);
229 if (!short_opts || !long_opts)
233 * getopt_long requires "val" to be unique (since that is what the
234 * func returns), so generate unique values automatically for flags
235 * that don't have a short option. pick 0x100 as that is above the
236 * single byte range (where ASCII/ISO-XXXX-X charsets live).
238 hidden_short_opt = 0x100;
240 for (i = 0; i < num_options; ++i) {
241 long_opts[i].name = sb_opt[i]->flag;
242 long_opts[i].has_arg = sb_opt[i]->has_arg ?
243 required_argument : no_argument;
244 long_opts[i].flag = NULL;
246 if (sb_opt[i]->flag_short) {
247 short_opts[si++] = long_opts[i].val = sb_opt[i]->flag_short;
248 if (long_opts[i].has_arg == required_argument)
249 short_opts[si++] = ':';
251 long_opts[i].val = sb_opt[i]->flag_short = hidden_short_opt++;
253 short_opts[si] = '\0';
255 /* we need to handle output ourselves since u-boot provides printf */
259 * walk all of the options the user gave us on the command line,
260 * figure out what u-boot option structure they belong to (via
261 * the unique short val key), and call the appropriate callback.
263 while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
264 for (i = 0; i < num_options; ++i) {
265 if (sb_opt[i]->flag_short == c) {
266 if (sb_opt[i]->callback(state, optarg)) {
267 state->parse_err = sb_opt[i]->flag;
273 if (i == num_options) {
275 * store the faulting flag for later display. we have to
276 * store the flag itself as the getopt parsing itself is
277 * tricky: need to handle the following flags (assume all
278 * of the below are unknown):
279 * -a optopt='a' optind=<next>
280 * -abbbb optopt='a' optind=<this>
281 * -aaaaa optopt='a' optind=<this>
282 * --a optopt=0 optind=<this>
283 * as you can see, it is impossible to determine the exact
284 * faulting flag without doing the parsing ourselves, so
285 * we just report the specific flag that failed.
288 static char parse_err[3] = { '-', 0, '\0', };
289 parse_err[1] = optopt;
290 state->parse_err = parse_err;
292 state->parse_err = argv[optind - 1];
300 void os_dirent_free(struct os_dirent_node *node)
302 struct os_dirent_node *next;
311 int os_dirent_ls(const char *dirname, struct os_dirent_node **headp)
313 struct dirent entry, *result;
314 struct os_dirent_node *head, *node, *next;
322 dir = opendir(dirname);
326 /* Create a buffer for the maximum filename length */
327 len = sizeof(entry.d_name) + strlen(dirname) + 2;
334 for (node = head = NULL;; node = next) {
335 ret = readdir_r(dir, &entry, &result);
338 next = malloc(sizeof(*node) + strlen(entry.d_name) + 1);
340 os_dirent_free(head);
345 strcpy(next->name, entry.d_name);
346 switch (entry.d_type) {
348 next->type = OS_FILET_REG;
351 next->type = OS_FILET_DIR;
354 next->type = OS_FILET_LNK;
358 snprintf(fname, len, "%s/%s", dirname, next->name);
359 if (!stat(fname, &buf))
360 next->size = buf.st_size;
374 const char *os_dirent_typename[OS_FILET_COUNT] = {
381 const char *os_dirent_get_typename(enum os_dirent_t type)
383 if (type >= 0 && type < OS_FILET_COUNT)
384 return os_dirent_typename[type];
386 return os_dirent_typename[OS_FILET_UNKNOWN];
389 int os_get_filesize(const char *fname, loff_t *size)
394 ret = stat(fname, &buf);
406 void os_puts(const char *str)
412 int os_write_ram_buf(const char *fname)
414 struct sandbox_state *state = state_get_current();
417 fd = open(fname, O_CREAT | O_WRONLY, 0777);
420 ret = write(fd, state->ram_buf, state->ram_size);
422 if (ret != state->ram_size)
428 int os_read_ram_buf(const char *fname)
430 struct sandbox_state *state = state_get_current();
434 ret = os_get_filesize(fname, &size);
437 if (size != state->ram_size)
439 fd = open(fname, O_RDONLY);
443 ret = read(fd, state->ram_buf, state->ram_size);
445 if (ret != state->ram_size)
451 static int make_exec(char *fname, const void *data, int size)
455 strcpy(fname, "/tmp/u-boot.jump.XXXXXX");
459 if (write(fd, data, size) < 0)
462 if (chmod(fname, 0777))
468 static int add_args(char ***argvp, const char *add_args[], int count)
473 for (argv = *argvp, argc = 0; (*argvp)[argc]; argc++)
476 argv = malloc((argc + count + 1) * sizeof(char *));
478 printf("Out of memory for %d argv\n", count);
481 memcpy(argv, *argvp, argc * sizeof(char *));
482 memcpy(argv + argc, add_args, count * sizeof(char *));
483 argv[argc + count] = NULL;
489 int os_jump_to_image(const void *dest, int size)
491 struct sandbox_state *state = state_get_current();
492 char fname[30], mem_fname[30];
494 const char *extra_args[5];
495 char **argv = state->argv;
500 err = make_exec(fname, dest, size);
504 strcpy(mem_fname, "/tmp/u-boot.mem.XXXXXX");
505 fd = mkstemp(mem_fname);
509 err = os_write_ram_buf(mem_fname);
515 extra_args[0] = "-j";
516 extra_args[1] = fname;
517 extra_args[2] = "-m";
518 extra_args[3] = mem_fname;
519 extra_args[4] = "--rm_memory";
520 err = add_args(&argv, extra_args,
521 sizeof(extra_args) / sizeof(extra_args[0]));
526 for (i = 0; argv[i]; i++)
527 printf("%d %s\n", i, argv[i]);
533 err = execv(fname, argv);
538 return unlink(fname);