int ipcs_main(int argc UNUSED_PARAM, char **argv)
{
int id = 0;
unsigned flags = 0;
unsigned opt;
char *opt_i;
#define flag_print (1<<0)
#define flag_msg (1<<1)
#define flag_sem (1<<2)
#define flag_shm (1<<3)
opt = getopt32(argv, "i:aqsmtcplu", &opt_i);
if (opt & 0x1) { // -i
id = xatoi(opt_i);
flags |= flag_print;
}
if (opt & 0x2) flags |= flag_msg | flag_sem | flag_shm; // -a
if (opt & 0x4) flags |= flag_msg; // -q
if (opt & 0x8) flags |= flag_sem; // -s
if (opt & 0x10) flags |= flag_shm; // -m
if (opt & 0x20) format = TIME; // -t
if (opt & 0x40) format = CREATOR; // -c
if (opt & 0x80) format = PID; // -p
if (opt & 0x100) format = LIMITS; // -l
if (opt & 0x200) format = STATUS; // -u
if (flags & flag_print) {
if (flags & flag_shm) {
print_shm(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
if (flags & flag_sem) {
print_sem(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
if (flags & flag_msg) {
print_msg(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
bb_show_usage();
}
if (!(flags & (flag_shm | flag_msg | flag_sem)))
flags |= flag_msg | flag_shm | flag_sem;
bb_putchar('\n');
if (flags & flag_shm) {
do_shm();
bb_putchar('\n');
}
if (flags & flag_sem) {
do_sem();
bb_putchar('\n');
}
if (flags & flag_msg) {
do_msg();
bb_putchar('\n');
}
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int ipcs_main(int argc UNUSED_PARAM, char **argv)
{
int format = 0;
unsigned opt;
char *opt_i;
opt = getopt32(argv, "i:aqsmtcplu", &opt_i);
#define flag_msg (1<<2)
#define flag_sem (1<<3)
#define flag_shm (1<<4)
if (opt & (1<<5)) format = TIME; // -t
if (opt & (1<<6)) format = CREATOR; // -c
if (opt & (1<<7)) format = PID; // -p
if (opt & (1<<8)) format = LIMITS; // -l
if (opt & (1<<9)) format = STATUS; // -u
if (opt & (1<<0)) { // -i
int id;
id = xatoi(opt_i);
if (opt & flag_shm) {
print_shm(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
if (opt & flag_sem) {
print_sem(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
if (opt & flag_msg) {
print_msg(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
bb_show_usage();
}
if ((opt & (1<<1)) // -a
|| !(opt & (flag_msg | flag_sem | flag_shm)) // none of -q,-s,-m == all
) {
opt |= flag_msg | flag_sem | flag_shm;
}
bb_putchar('\n');
if (opt & flag_msg) {
do_msg(format);
bb_putchar('\n');
}
if (opt & flag_shm) {
do_shm(format);
bb_putchar('\n');
}
if (opt & flag_sem) {
do_sem(format);
bb_putchar('\n');
}
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int catv_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
int retval = EXIT_SUCCESS;
int fd;
unsigned flags;
flags = getopt32(argv, "etv");
#define CATV_OPT_e (1<<0)
#define CATV_OPT_t (1<<1)
#define CATV_OPT_v (1<<2)
flags ^= CATV_OPT_v;
argv += optind;
/* Read from stdin if there's nothing else to do. */
if (!argv[0])
*--argv = (char*)"-";
do {
fd = open_or_warn_stdin(*argv);
if (fd < 0) {
retval = EXIT_FAILURE;
continue;
}
for (;;) {
int i, res;
#define read_buf bb_common_bufsiz1
res = read(fd, read_buf, COMMON_BUFSIZE);
if (res < 0)
retval = EXIT_FAILURE;
if (res < 1)
break;
for (i = 0; i < res; i++) {
unsigned char c = read_buf[i];
if (c > 126 && (flags & CATV_OPT_v)) {
if (c == 127) {
printf("^?");
continue;
}
printf("M-");
c -= 128;
}
if (c < 32) {
if (c == 10) {
if (flags & CATV_OPT_e)
bb_putchar('$');
} else if (flags & (c==9 ? CATV_OPT_t : CATV_OPT_v)) {
printf("^%c", c+'@');
continue;
}
}
bb_putchar(c);
}
}
if (ENABLE_FEATURE_CLEAN_UP && fd)
close(fd);
} while (*++argv);
fflush_stdout_and_exit(retval);
}
int rx_main(int argc, char **argv)
{
struct termios tty, orig_tty;
int termios_err;
int file_fd;
int n;
if (argc != 2)
bb_show_usage();
/* Disabled by vda:
* why we can't receive from stdin? Why we *require*
* controlling tty?? */
/*read_fd = xopen(CURRENT_TTY, O_RDWR);*/
file_fd = xopen(argv[1], O_RDWR|O_CREAT|O_TRUNC);
termios_err = tcgetattr(read_fd, &tty);
if (termios_err == 0) {
orig_tty = tty;
cfmakeraw(&tty);
tcsetattr(read_fd, TCSAFLUSH, &tty);
}
/* No SA_RESTART: we want ALRM to interrupt read() */
signal_no_SA_RESTART_empty_mask(SIGALRM, sigalrm_handler);
n = receive(file_fd);
if (termios_err == 0)
tcsetattr(read_fd, TCSAFLUSH, &orig_tty);
if (ENABLE_FEATURE_CLEAN_UP)
close(file_fd);
fflush_stdout_and_exit(n >= 0);
}
int which_main(int argc, char **argv)
{
int status = EXIT_SUCCESS;
char *p;
if (argc <= 1 || argv[1][0] == '-') {
bb_show_usage();
}
/* We shouldn't do this. Ever. Not our business.
if (!getenv("PATH")) {
putenv((char*)bb_PATH_root_path);
}
*/
while (--argc > 0) {
argv++;
if (strchr(*argv, '/')) {
if (execable_file(*argv)) {
puts(*argv);
continue;
}
} else {
p = find_execable(*argv);
if (p) {
puts(p);
free(p);
continue;
}
}
status = EXIT_FAILURE;
}
fflush_stdout_and_exit(status);
}
int which_main(int argc, char **argv)
{
int status = EXIT_SUCCESS;
char *p;
if (argc <= 1 || argv[1][0] == '-') {
bb_show_usage();
}
if (!getenv("PATH")) {
setenv("PATH", "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin", 1);
}
while (--argc > 0) {
argv++;
if (strchr(*argv, '/')) {
if (execable_file(*argv)) {
puts(*argv);
continue;
}
} else {
p = find_execable(*argv);
if (p) {
puts(p);
free(p);
continue;
}
}
status = EXIT_FAILURE;
}
fflush_stdout_and_exit(status);
}
int time_main(int argc UNUSED_PARAM, char **argv)
{
resource_t res;
const char *output_format = default_format;
int opt;
opt_complementary = "-1"; /* at least one arg */
/* "+": stop on first non-option */
opt = getopt32(argv, "+vp");
argv += optind;
if (opt & 1)
output_format = long_format;
if (opt & 2)
output_format = posix_format;
run_command(argv, &res);
/* Cheat. printf's are shorter :) */
/* (but see bb_putchar() body for additional wrinkle!) */
xdup2(2, 1); /* just in case libc does something silly :( */
stdout = stderr;
summarize(output_format, argv, &res);
if (WIFSTOPPED(res.waitstatus))
return WSTOPSIG(res.waitstatus);
if (WIFSIGNALED(res.waitstatus))
return WTERMSIG(res.waitstatus);
if (WIFEXITED(res.waitstatus))
return WEXITSTATUS(res.waitstatus);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int time_main(int argc UNUSED_PARAM, char **argv)
{
resource_t res;
const char *output_format = default_format;
int opt;
opt_complementary = "-1"; /* at least one arg */
/* "+": stop on first non-option */
opt = getopt32(argv, "+vp");
argv += optind;
if (opt & 1)
output_format = long_format;
if (opt & 2)
output_format = posix_format;
run_command(argv, &res);
/* Cheat. printf's are shorter :) */
xdup2(STDERR_FILENO, STDOUT_FILENO);
summarize(output_format, argv, &res);
if (WIFSTOPPED(res.waitstatus))
return WSTOPSIG(res.waitstatus);
if (WIFSIGNALED(res.waitstatus))
return WTERMSIG(res.waitstatus);
if (WIFEXITED(res.waitstatus))
return WEXITSTATUS(res.waitstatus);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int tty_main(int argc, char **argv)
{
const char *s;
int silent; /* Note: No longer relevant in SUSv3. */
int retval;
xfunc_error_retval = 2; /* SUSv3 requires > 1 for error. */
silent = getopt32(argc, argv, "s");
/* gnu tty outputs a warning that it is ignoring all args. */
bb_warn_ignoring_args(argc - optind);
retval = 0;
if ((s = ttyname(0)) == NULL) {
/* According to SUSv3, ttyname can on fail with EBADF or ENOTTY.
* We know the file descriptor is good, so failure means not a tty. */
s = "not a tty";
retval = 1;
}
if (!silent) {
puts(s);
}
fflush_stdout_and_exit(retval);
}
int printenv_main(int argc UNUSED_PARAM, char **argv)
{
int exit_code = EXIT_SUCCESS;
/* no variables specified, show whole env */
if (!argv[1]) {
char **e = environ;
/* environ can be NULL! (for example, after clearenv())
* Check for that:
*/
if (e)
while (*e)
puts(*e++);
} else {
/* search for specified variables and print them out if found */
char *arg, *env;
while ((arg = *++argv) != NULL) {
env = getenv(arg);
if (env)
puts(env);
else
exit_code = EXIT_FAILURE;
}
}
fflush_stdout_and_exit(exit_code);
}
int realpath_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
int retval = EXIT_SUCCESS;
#if PATH_MAX > (BUFSIZ+1)
RESERVE_CONFIG_BUFFER(resolved_path, PATH_MAX);
# define resolved_path_MUST_FREE 1
#else
#define resolved_path bb_common_bufsiz1
# define resolved_path_MUST_FREE 0
#endif
if (!*++argv) {
bb_show_usage();
}
do {
if (realpath(*argv, resolved_path) != NULL) {
puts(resolved_path);
} else {
retval = EXIT_FAILURE;
bb_simple_perror_msg(*argv);
}
} while (*++argv);
#if ENABLE_FEATURE_CLEAN_UP && resolved_path_MUST_FREE
RELEASE_CONFIG_BUFFER(resolved_path);
#endif
fflush_stdout_and_exit(retval);
}
int whoami_main(int argc, char **argv)
{
if (argc > 1)
bb_show_usage();
puts(bb_getpwuid(NULL, geteuid(), -1));
/* exits on error */
fflush_stdout_and_exit(EXIT_SUCCESS);
}
/* Exit the program gracefully */
static void less_exit(int code)
{
/* TODO: We really should save the terminal state when we start,
* and restore it when we exit. Less does this with the
* "ti" and "te" termcap commands; can this be done with
* only termios.h? */
bb_putchar('\n');
fflush_stdout_and_exit(code);
}
int catv_main(int argc UNUSED_PARAM, char **argv)
{
int retval = EXIT_SUCCESS;
int fd;
unsigned opts;
#define CATV_OPT_e (1<<0)
#define CATV_OPT_t (1<<1)
#define CATV_OPT_v (1<<2)
typedef char BUG_const_mismatch[
CATV_OPT_e == VISIBLE_ENDLINE && CATV_OPT_t == VISIBLE_SHOW_TABS
? 1 : -1
];
opts = getopt32(argv, "etv");
argv += optind;
#if 0 /* These consts match, we can just pass "opts" to visible() */
if (opts & CATV_OPT_e)
flags |= VISIBLE_ENDLINE;
if (opts & CATV_OPT_t)
flags |= VISIBLE_SHOW_TABS;
#endif
/* Read from stdin if there's nothing else to do. */
if (!argv[0])
*--argv = (char*)"-";
do {
fd = open_or_warn_stdin(*argv);
if (fd < 0) {
retval = EXIT_FAILURE;
continue;
}
for (;;) {
int i, res;
#define read_buf bb_common_bufsiz1
res = read(fd, read_buf, COMMON_BUFSIZE);
if (res < 0)
retval = EXIT_FAILURE;
if (res <= 0)
break;
for (i = 0; i < res; i++) {
unsigned char c = read_buf[i];
if (opts & CATV_OPT_v) {
putchar(c);
} else {
char buf[sizeof("M-^c")];
visible(c, buf, opts);
fputs(buf, stdout);
}
}
}
if (ENABLE_FEATURE_CLEAN_UP && fd)
close(fd);
} while (*++argv);
fflush_stdout_and_exit(retval);
}
int hostid_main(int argc, char ATTRIBUTE_UNUSED **argv)
{
if (argc > 1) {
bb_show_usage();
}
printf("%lx\n", gethostid());
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int length_main(int argc, char **argv)
{
if ((argc != 2) || (**(++argv) == '-')) {
bb_show_usage();
}
printf("%lu\n", (unsigned long)strlen(*argv));
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int catv_main(int argc, char **argv)
{
int retval = EXIT_SUCCESS, fd;
unsigned flags;
flags = getopt32(argc, argv, "etv");
#define CATV_OPT_e (1<<0)
#define CATV_OPT_t (1<<1)
#define CATV_OPT_v (1<<2)
flags ^= CATV_OPT_v;
argv += optind;
do {
/* Read from stdin if there's nothing else to do. */
fd = 0;
if (*argv && 0 > (fd = xopen(*argv, O_RDONLY)))
retval = EXIT_FAILURE;
else for (;;) {
int i, res;
res = read(fd, bb_common_bufsiz1, sizeof(bb_common_bufsiz1));
if (res < 0)
retval = EXIT_FAILURE;
if (res < 1)
break;
for (i = 0; i < res; i++) {
char c = bb_common_bufsiz1[i];
if (c > 126 && (flags & CATV_OPT_v)) {
if (c == 127) {
printf("^?");
continue;
} else {
printf("M-");
c -= 128;
}
}
if (c < 32) {
if (c == 10) {
if (flags & CATV_OPT_e)
putchar('$');
} else if (flags & (c==9 ? CATV_OPT_t : CATV_OPT_v)) {
printf("^%c", c+'@');
continue;
}
}
putchar(c);
}
}
if (ENABLE_FEATURE_CLEAN_UP && fd)
close(fd);
} while (*++argv);
fflush_stdout_and_exit(retval);
}
int uname_main(int argc, char **argv)
{
uname_info_t uname_info;
#if defined(__sparc__) && defined(__linux__)
char *fake_sparc = getenv("FAKE_SPARC");
#endif
const unsigned short int *delta;
char toprint;
toprint = getopt32(argc, argv, options);
if (argc != optind) {
bb_show_usage();
}
if (toprint & (1 << 6)) {
toprint = 0x3f;
}
if (toprint == 0) {
toprint = 1; /* sysname */
}
if (uname(&uname_info.name) == -1) {
bb_error_msg_and_die("cannot get system name");
}
#if defined(__sparc__) && defined(__linux__)
if ((fake_sparc != NULL)
&& ((fake_sparc[0] == 'y')
|| (fake_sparc[0] == 'Y'))) {
strcpy(uname_info.name.machine, "sparc");
}
#endif
strcpy(uname_info.processor, "unknown");
delta = utsname_offset;
do {
if (toprint & 1) {
printf(((char *)(&uname_info)) + *delta);
if (toprint > 1) {
putchar(' ');
}
}
++delta;
} while (toprint >>= 1);
putchar('\n');
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int env_main(int argc UNUSED_PARAM, char **argv)
{
char **ep;
unsigned opt;
llist_t *unset_env = NULL;
opt_complementary = "u::";
#if ENABLE_FEATURE_ENV_LONG_OPTIONS
applet_long_options = env_longopts;
#endif
opt = getopt32(argv, "+iu:", &unset_env);
argv += optind;
if (*argv && LONE_DASH(argv[0])) {
opt |= 1;
++argv;
}
if (opt & 1) {
clearenv();
}
while (unset_env) {
char *var = llist_pop(&unset_env);
/* This does not handle -uVAR=VAL
* (coreutils _sets_ the variable in that case): */
/*unsetenv(var);*/
/* This does, but uses somewhan undocumented feature that
* putenv("name_without_equal_sign") unsets the variable: */
putenv(var);
}
while (*argv && (strchr(*argv, '=') != NULL)) {
if (putenv(*argv) < 0) {
bb_perror_msg_and_die("putenv");
}
++argv;
}
if (*argv) {
BB_EXECVP(*argv, argv);
/* SUSv3-mandated exit codes. */
xfunc_error_retval = (errno == ENOENT) ? 127 : 126;
bb_simple_perror_msg_and_die(*argv);
}
for (ep = environ; *ep; ep++) {
puts(*ep);
}
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int env_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
/* cleanenv was static - why? */
char *cleanenv[1];
char **ep;
unsigned opt;
llist_t *unset_env = NULL;
opt_complementary = "u::";
#if ENABLE_FEATURE_ENV_LONG_OPTIONS
applet_long_options = env_longopts;
#endif
opt = getopt32(argv, "+iu:", &unset_env);
argv += optind;
if (*argv && LONE_DASH(argv[0])) {
opt |= 1;
++argv;
}
if (opt & 1) {
cleanenv[0] = NULL;
environ = cleanenv;
} else {
while (unset_env) {
unsetenv(unset_env->data);
unset_env = unset_env->link;
}
}
while (*argv && (strchr(*argv, '=') != NULL)) {
if (putenv(*argv) < 0) {
bb_perror_msg_and_die("putenv");
}
++argv;
}
if (*argv) {
BB_EXECVP(*argv, argv);
/* SUSv3-mandated exit codes. */
xfunc_error_retval = (errno == ENOENT) ? 127 : 126;
bb_simple_perror_msg_and_die(*argv);
}
for (ep = environ; *ep; ep++) {
puts(*ep);
}
fflush_stdout_and_exit(0);
}
static int catv(unsigned opts, char **argv)
{
int retval = EXIT_SUCCESS;
int fd;
BUILD_BUG_ON(CATV_OPT_e != VISIBLE_ENDLINE);
BUILD_BUG_ON(CATV_OPT_t != VISIBLE_SHOW_TABS);
#if 0 /* These consts match, we can just pass "opts" to visible() */
if (opts & CATV_OPT_e)
flags |= VISIBLE_ENDLINE;
if (opts & CATV_OPT_t)
flags |= VISIBLE_SHOW_TABS;
#endif
/* Read from stdin if there's nothing else to do. */
if (!argv[0])
*--argv = (char*)"-";
#define read_buf bb_common_bufsiz1
setup_common_bufsiz();
do {
fd = open_or_warn_stdin(*argv);
if (fd < 0) {
retval = EXIT_FAILURE;
continue;
}
for (;;) {
int i, res;
res = read(fd, read_buf, COMMON_BUFSIZE);
if (res < 0)
retval = EXIT_FAILURE;
if (res <= 0)
break;
for (i = 0; i < res; i++) {
unsigned char c = read_buf[i];
char buf[sizeof("M-^c")];
visible(c, buf, opts);
fputs(buf, stdout);
}
}
if (ENABLE_FEATURE_CLEAN_UP && fd)
close(fd);
} while (*++argv);
fflush_stdout_and_exit(retval);
}
int expr_main(int argc UNUSED_PARAM, char **argv)
{
VALUE *v;
xfunc_error_retval = 2; /* coreutils compat */
G.args = argv + 1;
if (*G.args == NULL) {
bb_error_msg_and_die("too few arguments");
}
v = eval();
if (*G.args)
bb_error_msg_and_die("syntax error");
if (v->type == INTEGER)
printf("%" PF_REZ "d\n", PF_REZ_TYPE v->u.i);
else
puts(v->u.s);
fflush_stdout_and_exit(null(v));
}
int time_main(int argc, char **argv)
{
resource_t res;
const char *output_format = default_format;
char c;
goto next;
/* Parse any options -- don't use getopt() here so we don't
* consume the args of our client application... */
while (argc > 0 && argv[0][0] == '-') {
while ((c = *++*argv)) {
switch (c) {
case 'v':
output_format = long_format;
break;
case 'p':
output_format = posix_format;
break;
default:
bb_show_usage();
}
}
next:
argv++;
argc--;
if (!argc)
bb_show_usage();
}
run_command(argv, &res);
/* Cheat. printf's are shorter :) */
stdout = stderr;
dup2(2, 1); /* just in case libc does something silly :( */
summarize(output_format, argv, &res);
if (WIFSTOPPED(res.waitstatus))
return WSTOPSIG(res.waitstatus);
if (WIFSIGNALED(res.waitstatus))
return WTERMSIG(res.waitstatus);
if (WIFEXITED(res.waitstatus))
return WEXITSTATUS(res.waitstatus);
fflush_stdout_and_exit(0);
}
int uuencode_main(int argc UNUSED_PARAM, char **argv)
{
struct stat stat_buf;
int src_fd = STDIN_FILENO;
const char *tbl;
mode_t mode;
char src_buf[SRC_BUF_SIZE];
char dst_buf[DST_BUF_SIZE + 1];
tbl = bb_uuenc_tbl_std;
mode = 0666 & ~umask(0666);
opt_complementary = "-1:?2"; /* must have 1 or 2 args */
if (getopt32(argv, "m")) {
tbl = bb_uuenc_tbl_base64;
}
argv += optind;
if (argv[1]) {
src_fd = xopen(*argv, O_RDONLY);
fstat(src_fd, &stat_buf);
mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
argv++;
}
printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, *argv);
while (1) {
size_t size = full_read(src_fd, src_buf, SRC_BUF_SIZE);
if (!size)
break;
if ((ssize_t)size < 0)
bb_perror_msg_and_die(bb_msg_read_error);
/* Encode the buffer we just read in */
bb_uuencode(dst_buf, src_buf, size, tbl);
bb_putchar('\n');
if (tbl == bb_uuenc_tbl_std) {
bb_putchar(tbl[size]);
}
fflush(stdout);
xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3));
}
printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n");
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int nice_main(int argc, char **argv)
{
int old_priority, adjustment;
old_priority = getpriority(PRIO_PROCESS, 0);
if (!*++argv) { /* No args, so (GNU) output current nice value. */
printf("%d\n", old_priority);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
adjustment = 10; /* Set default adjustment. */
if (argv[0][0] == '-') {
if (argv[0][1] == 'n') { /* -n */
if (argv[0][2]) { /* -nNNNN (w/o space) */
argv[0] += 2; argv--; argc++;
}
} else { /* -NNN (NNN may be negative) == -n NNN */
argv[0] += 1; argv--; argc++;
}
if (argc < 4) { /* Missing priority and/or utility! */
bb_show_usage();
}
adjustment = xatoi_range(argv[1], INT_MIN/2, INT_MAX/2);
argv += 2;
}
{ /* Set our priority. */
int prio = old_priority + adjustment;
if (setpriority(PRIO_PROCESS, 0, prio) < 0) {
bb_perror_msg_and_die("setpriority(%d)", prio);
}
}
execvp(*argv, argv); /* Now exec the desired program. */
/* The exec failed... */
xfunc_error_retval = (errno == ENOENT) ? 127 : 126; /* SUSv3 */
bb_perror_msg_and_die("%s", *argv);
}
int printenv_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
/* no variables specified, show whole env */
if (!argv[1]) {
int e = 0;
while (environ[e])
puts(environ[e++]);
} else {
/* search for specified variables and print them out if found */
char *arg, *env;
while ((arg = *++argv) != NULL) {
env = getenv(arg);
if (env)
puts(env);
}
}
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int realpath_main(int argc UNUSED_PARAM, char **argv)
{
int retval = EXIT_SUCCESS;
if (!*++argv) {
bb_show_usage();
}
do {
char *resolved_path = xmalloc_realpath(*argv);
if (resolved_path != NULL) {
puts(resolved_path);
free(resolved_path);
} else {
retval = EXIT_FAILURE;
bb_simple_perror_msg(*argv);
}
} while (*++argv);
fflush_stdout_and_exit(retval);
}
int basename_main(int argc, char **argv)
{
size_t m, n;
char *s;
if (((unsigned int)(argc-2)) >= 2) {
bb_show_usage();
}
s = bb_get_last_path_component(*++argv);
if (*++argv) {
n = strlen(*argv);
m = strlen(s);
if ((m > n) && ((strcmp)(s+m-n, *argv) == 0)) {
s[m-n] = '\0';
}
}
puts(s);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int chrt_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
pid_t pid = 0;
unsigned opt;
struct sched_param sp;
char *pid_str;
char *priority = priority; /* for compiler */
const char *current_new;
int policy = SCHED_RR;
/* at least 1 arg; only one policy accepted */
opt_complementary = "-1:r--fo:f--ro:r--fo";
opt = getopt32(argv, "+mprfo");
if (opt & OPT_r)
policy = SCHED_RR;
if (opt & OPT_f)
policy = SCHED_FIFO;
if (opt & OPT_o)
policy = SCHED_OTHER;
if (opt & OPT_m) { /* print min/max */
show_min_max(SCHED_FIFO);
show_min_max(SCHED_RR);
show_min_max(SCHED_OTHER);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
argv += optind;
if (opt & OPT_p) {
pid_str = *argv++;
if (*argv) { /* "-p <priority> <pid> [...]" */
priority = pid_str;
pid_str = *argv;
}
/* else "-p <pid>", and *argv == NULL */
pid = xatoul_range(pid_str, 1, ((unsigned)(pid_t)ULONG_MAX) >> 1);
} else {
int chrt_main(int argc, char **argv)
{
pid_t pid = 0;
unsigned opt;
struct sched_param sp;
char *p_opt = NULL, *priority = NULL;
const char *state = "current\0new";
int prio = 0, policy = SCHED_RR;
opt_complementary = "r--fo:f--ro:r--fo"; /* only one policy accepted */
opt = getopt32(argv, "+mp:rfo", &p_opt);
if (opt & OPT_r)
policy = SCHED_RR;
if (opt & OPT_f)
policy = SCHED_FIFO;
if (opt & OPT_o)
policy = SCHED_OTHER;
if (opt & OPT_m) { /* print min/max */
show_min_max(SCHED_FIFO);
show_min_max(SCHED_RR);
show_min_max(SCHED_OTHER);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
if (opt & OPT_p) {
if (argc == optind+1) { /* -p <priority> <pid> */
priority = p_opt;
p_opt = argv[optind];
}
argv += optind; /* me -p <arg> */
pid = xatoul_range(p_opt, 1, ULONG_MAX); /* -p <pid> */
} else {
argv += optind; /* me -p <arg> */
priority = *argv;
}
if (priority) {
/* from the manpage of sched_getscheduler:
[...] sched_priority can have a value
in the range 0 to 99.
[...] SCHED_OTHER or SCHED_BATCH must be assigned
the static priority 0. [...] SCHED_FIFO or
SCHED_RR can have a static priority in the range 1 to 99.
*/
prio = xstrtol_range(priority, 0, policy == SCHED_OTHER
? 0 : 1, 99);
}
if (opt & OPT_p) {
int pol = 0;
print_rt_info:
pol = sched_getscheduler(pid);
if (pol < 0)
bb_perror_msg_and_die("failed to %cet pid %d's policy", 'g', pid);
printf("pid %d's %s scheduling policy: %s\n",
pid, state, policies[pol].name);
if (sched_getparam(pid, &sp))
bb_perror_msg_and_die("failed to get pid %d's attributes", pid);
printf("pid %d's %s scheduling priority: %d\n",
pid, state, sp.sched_priority);
if (!*argv) /* no new prio given or we did print already, done. */
return EXIT_SUCCESS;
}
sp.sched_priority = prio;
if (sched_setscheduler(pid, policy, &sp) < 0)
bb_perror_msg_and_die("failed to %cet pid %d's policy", 's', pid);
if (opt & OPT_p) {
state += 8;
++argv;
goto print_rt_info;
}
++argv;
BB_EXECVP(*argv, argv);
bb_simple_perror_msg_and_die(*argv);
}
