int
main (int argc, char **argv)
{
progname = argv[0];
if (argc == 1 || strcmp (argv[1], "-h") == 0)
{
printf ("usage: %s NUM [NUM...]\n", progname);
printf ("where NUM is a decimal number, NUM:COUNT or NUM-NUM\n");
exit (0);
}
while (--argc)
{
char *arg = *++argv;
unsigned long num, num2;
char *p;
num = xstrtoul (arg, &p);
if (*p == 0)
print_number (num);
else if (*p == ':')
{
*p++ = 0;
num2 = xstrtoul (p, NULL);
if (num2 == 0)
{
fprintf (stderr, "%s: invalid count\n", progname);
exit (2);
}
print_range (num, num + num2 - 1);
}
else if (*p == '-')
{
*p++ = 0;
num2 = xstrtoul (p, NULL);
if (num2 < num)
{
fprintf (stderr, "%s: invalid range: %lu-%lu\n",
progname, num, num2);
exit (2);
}
print_range (num, num2);
}
else
{
fprintf (stderr, "%s: invalid argument\n", progname);
exit (2);
}
}
exit (0);
}
int flash_lock_unlock_main(int argc UNUSED_PARAM, char **argv)
{
/* note: fields in these structs are 32-bits.
* apparently we can't win anything by using off_t
* or long long's for offset and/or sectors vars. */
struct mtd_info_user info;
struct erase_info_user lock;
unsigned long offset;
long sectors;
int fd;
#define do_lock (ENABLE_FLASH_LOCK && (!ENABLE_FLASH_UNLOCK || (applet_name[6] == 'l')))
if (!argv[1])
bb_show_usage();
/* parse offset and number of sectors to lock */
offset = 0;
sectors = -1;
if (do_lock) {
if (!argv[2] || !argv[3])
bb_show_usage();
offset = xstrtoul(argv[2], 0);
sectors = xstrtol(argv[3], 0);
}
fd = xopen(argv[1], O_RDWR);
xioctl(fd, MEMGETINFO, &info);
lock.start = 0;
lock.length = info.size;
if (do_lock) {
unsigned long size = info.size - info.erasesize;
if (offset > size) {
bb_error_msg_and_die("%lx is beyond device size %lx\n",
offset, size);
}
if (sectors == -1) {
sectors = info.size / info.erasesize;
} else {
// isn't this useless?
unsigned long num = info.size / info.erasesize;
if (sectors > num) {
bb_error_msg_and_die("%ld are too many "
"sectors, device only has "
"%ld\n", sectors, num);
}
}
lock.start = offset;
lock.length = sectors * info.erasesize;
xioctl(fd, MEMLOCK, &lock);
} else {
xioctl(fd, MEMUNLOCK, &lock);
}
return EXIT_SUCCESS;
}
/* Work around Linux kernel issues on BTRFS and EXT4 before 2.6.39.
FIXME: remove in 2013, or whenever we're pretty confident
that the offending, unpatched kernels are no longer in use. */
static bool
extent_need_sync (void)
{
/* For now always return true, to be on the safe side.
If/when FIEMAP semantics are well defined (before SEEK_HOLE support
is usable) and kernels implementing them are in use, we may relax
this once again. */
return true;
#if FIEMAP_BEHAVIOR_IS_DEFINED_AND_USABLE
static int need_sync = -1;
if (need_sync == -1)
{
struct utsname name;
need_sync = 0; /* No workaround by default. */
# ifdef __linux__
if (uname (&name) != -1 && STRNCMP_LIT (name.release, "2.6.") == 0)
{
unsigned long val;
if (xstrtoul (name.release + 4, NULL, 10, &val, NULL) == LONGINT_OK)
{
if (val < 39)
need_sync = 1;
}
}
# endif
}
return need_sync;
#endif
}
static int ctoi(char *s)
{
if (s[0] == '\'' && s[1] != '\0' && s[2] == '\'' && s[3] == '\0')
return s[1];
// U+ means 0x
if (s[0] == 'U' && s[1] == '+') {
s[0] = '0';
s[1] = 'x';
}
if (!isdigit(s[0]))
return -1;
return xstrtoul(s, 0);
}
static char const *
parse_with_separator (char const *spec, char const *separator,
uid_t *uid, gid_t *gid,
char **username, char **groupname)
{
static const char *E_invalid_user = N_("invalid user");
static const char *E_invalid_group = N_("invalid group");
static const char *E_bad_spec = N_("invalid spec");
const char *error_msg;
struct passwd *pwd;
struct group *grp;
char *u;
char const *g;
char *gname = NULL;
uid_t unum = *uid;
gid_t gnum = *gid;
error_msg = NULL;
*username = *groupname = NULL;
/* Set U and G to nonzero length strings corresponding to user and
group specifiers or to NULL. If U is not NULL, it is a newly
allocated string. */
u = NULL;
if (separator == NULL)
{
if (*spec)
u = xstrdup (spec);
}
else
{
size_t ulen = separator - spec;
if (ulen != 0)
{
u = xmemdup (spec, ulen + 1);
u[ulen] = '\0';
}
}
g = (separator == NULL || *(separator + 1) == '\0'
? NULL
: separator + 1);
#ifdef __DJGPP__
/* Pretend that we are the user U whose group is G. This makes
pwd and grp functions ``know'' about the UID and GID of these. */
if (u && !is_number (u))
setenv ("USER", u, 1);
if (g && !is_number (g))
setenv ("GROUP", g, 1);
#endif
if (u != NULL)
{
/* If it starts with "+", skip the look-up. */
pwd = (*u == '+' ? NULL : getpwnam (u));
if (pwd == NULL)
{
bool use_login_group = (separator != NULL && g == NULL);
if (use_login_group)
{
/* If there is no group,
then there may not be a trailing ":", either. */
error_msg = E_bad_spec;
}
else
{
unsigned long int tmp;
if (xstrtoul (u, NULL, 10, &tmp, "") == LONGINT_OK
&& tmp <= MAXUID && (uid_t) tmp != (uid_t) -1)
unum = tmp;
else
error_msg = E_invalid_user;
}
}
else
{
unum = pwd->pw_uid;
if (g == NULL && separator != NULL)
{
/* A separator was given, but a group was not specified,
so get the login group. */
char buf[INT_BUFSIZE_BOUND (uintmax_t)];
gnum = pwd->pw_gid;
grp = getgrgid (gnum);
gname = xstrdup (grp ? grp->gr_name : umaxtostr (gnum, buf));
endgrent ();
}
}
endpwent ();
}
if (g != NULL && error_msg == NULL)
{
/* Explicit group. */
/* If it starts with "+", skip the look-up. */
grp = (*g == '+' ? NULL : getgrnam (g));
if (grp == NULL)
{
unsigned long int tmp;
if (xstrtoul (g, NULL, 10, &tmp, "") == LONGINT_OK
&& tmp <= MAXGID && (gid_t) tmp != (gid_t) -1)
gnum = tmp;
else
error_msg = E_invalid_group;
}
else
gnum = grp->gr_gid;
endgrent (); /* Save a file descriptor. */
gname = xstrdup (g);
}
if (error_msg == NULL)
{
*uid = unum;
*gid = gnum;
*username = u;
*groupname = gname;
u = NULL;
}
else
free (gname);
free (u);
return _(error_msg);
}
int
main (int argc, char **argv)
{
static struct option long_options[] = {
{"input", required_argument, 0, 'i'},
{"output", required_argument, 0, 'o'},
{"read-length", required_argument, 0, 'r'},
{"bpb", required_argument, 0, 'b'},
{"mrate1", required_argument, 0, 'x'},
{"mrate2", required_argument, 0, 'y'},
{"mrate3", required_argument, 0, 'z'},
{"help", no_argument, 0, 'h'}
};
outfp = NULL;
read_length = 48;
bpb = 2;
mrate1 = mrate2 = mrate3 = 0;
for (;;)
{
int option_index = 0;
int c = getopt_long (argc, argv, "i:o:p:r:n:b:x:y:z:h", long_options,
&option_index);
if (-1 == c)
break;
switch (c)
{
case 'i':
if (optarg[0] == '-' && optarg[1] == '\0')
infp = stdin;
else
assert (NULL != (infp = xfopen (optarg, "r")));
break;
case 'o':
if (optarg[0] == '-' && optarg[1] == '\0')
outfp = stdout;
else
assert (NULL != (outfp = xfopen (optarg, "w")));
break;
case 'r':
read_length = xstrtoul (optarg);
break;
case 'b':
bpb = xstrtoul (optarg);
break;
case 'x':
mrate1 = xstrtoul (optarg);
break;
case 'y':
mrate2 = xstrtoul (optarg);
break;
case 'z':
mrate3 = xstrtoul (optarg);
break;
case 'h':
usage ();
return 0;
case '?':
default:
usage ();
return 1;
}
}
if (NULL == infp)
infp = stdin;
if (NULL == outfp)
outfp = stdout;
if (0 != readgen ())
print_error ("Failed to convert input to binary.");
fclose (infp);
fclose (outfp);
return 0;
}
int ipcrm_main(int argc, char **argv)
{
int c;
int error = 0;
/* if the command is executed without parameters, do nothing */
if (argc == 1)
return 0;
#if IPCRM_LEGACY
/* check to see if the command is being invoked in the old way if so
then run the old code. Valid commands are msg, shm, sem. */
{
type_id what = 0; /* silence gcc */
char w;
w = argv[1][0];
if ( ((w == 'm' && argv[1][1] == 's' && argv[1][2] == 'g')
|| (argv[1][0] == 's'
&& ((w = argv[1][1]) == 'h' || w == 'e')
&& argv[1][2] == 'm')
) && argv[1][3] == '\0'
) {
if (argc < 3)
bb_show_usage();
if (w == 'h')
what = SHM;
else if (w == 'm')
what = MSG;
else if (w == 'e')
what = SEM;
if (remove_ids(what, &argv[2]))
fflush_stdout_and_exit(EXIT_FAILURE);
printf("resource(s) deleted\n");
return 0;
}
}
#endif /* IPCRM_LEGACY */
/* process new syntax to conform with SYSV ipcrm */
while ((c = getopt(argc, argv, "q:m:s:Q:M:S:h?")) != -1) {
int result;
int id = 0;
int iskey = isupper(c);
/* needed to delete semaphores */
union semun arg;
arg.val = 0;
if ((c == '?') || (c == 'h')) {
bb_show_usage();
}
/* we don't need case information any more */
c = tolower(c);
/* make sure the option is in range: allowed are q, m, s */
if (c != 'q' && c != 'm' && c != 's') {
bb_show_usage();
}
if (iskey) {
/* keys are in hex or decimal */
key_t key = xstrtoul(optarg, 0);
if (key == IPC_PRIVATE) {
error++;
bb_error_msg("illegal key (%s)", optarg);
continue;
}
/* convert key to id */
id = ((c == 'q') ? msgget(key, 0) :
(c == 'm') ? shmget(key, 0, 0) : semget(key, 0, 0));
if (id < 0) {
const char *errmsg;
error++;
switch (errno) {
case EACCES:
errmsg = "permission denied for";
break;
case EIDRM:
errmsg = "already removed";
break;
case ENOENT:
errmsg = "invalid";
break;
default:
errmsg = "unknown error in";
break;
}
bb_error_msg("%s %s (%s)", errmsg, "key", optarg);
continue;
}
} else {
/* ids are in decimal */
id = xatoul(optarg);
}
result = ((c == 'q') ? msgctl(id, IPC_RMID, NULL) :
(c == 'm') ? shmctl(id, IPC_RMID, NULL) :
semctl(id, 0, IPC_RMID, arg));
if (result) {
const char *errmsg;
const char *const what = iskey ? "key" : "id";
error++;
switch (errno) {
case EACCES:
case EPERM:
errmsg = "permission denied for";
break;
case EINVAL:
errmsg = "invalid";
break;
case EIDRM:
errmsg = "already removed";
break;
default:
errmsg = "unknown error in";
break;
}
bb_error_msg("%s %s (%s)", errmsg, what, optarg);
continue;
}
}
/* print usage if we still have some arguments left over */
if (optind != argc) {
bb_show_usage();
}
/* exit value reflects the number of errors encountered */
return error;
}
char get_header_tar(archive_handle_t *archive_handle)
{
static int end;
file_header_t *file_header = archive_handle->file_header;
struct {
/* ustar header, Posix 1003.1 */
char name[100]; /* 0-99 */
char mode[8]; /* 100-107 */
char uid[8]; /* 108-115 */
char gid[8]; /* 116-123 */
char size[12]; /* 124-135 */
char mtime[12]; /* 136-147 */
char chksum[8]; /* 148-155 */
char typeflag; /* 156-156 */
char linkname[100]; /* 157-256 */
char magic[6]; /* 257-262 */
char version[2]; /* 263-264 */
char uname[32]; /* 265-296 */
char gname[32]; /* 297-328 */
char devmajor[8]; /* 329-336 */
char devminor[8]; /* 337-344 */
char prefix[155]; /* 345-499 */
char padding[12]; /* 500-512 */
} tar;
char *cp;
int i, sum_u, sum_s, sum;
int parse_names;
if (sizeof(tar) != 512)
BUG_tar_header_size();
#if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
again:
#endif
/* Align header */
data_align(archive_handle, 512);
again_after_align:
xread(archive_handle->src_fd, &tar, 512);
archive_handle->offset += 512;
/* If there is no filename its an empty header */
if (tar.name[0] == 0) {
if (end) {
/* This is the second consecutive empty header! End of archive!
* Read until the end to empty the pipe from gz or bz2
*/
while (full_read(archive_handle->src_fd, &tar, 512) == 512)
/* repeat */;
return EXIT_FAILURE;
}
end = 1;
return EXIT_SUCCESS;
}
end = 0;
/* Check header has valid magic, "ustar" is for the proper tar
* 0's are for the old tar format
*/
if (strncmp(tar.magic, "ustar", 5) != 0) {
#if ENABLE_FEATURE_TAR_OLDGNU_COMPATIBILITY
if (memcmp(tar.magic, "\0\0\0\0", 5) != 0)
#endif
bb_error_msg_and_die("invalid tar magic");
}
/* Do checksum on headers.
* POSIX says that checksum is done on unsigned bytes, but
* Sun and HP-UX gets it wrong... more details in
* GNU tar source. */
sum_s = sum_u = ' ' * sizeof(tar.chksum);
for (i = 0; i < 148 ; i++) {
sum_u += ((unsigned char*)&tar)[i];
sum_s += ((signed char*)&tar)[i];
}
for (i = 156; i < 512 ; i++) {
sum_u += ((unsigned char*)&tar)[i];
sum_s += ((signed char*)&tar)[i];
}
/* This field does not need special treatment (getOctal) */
sum = xstrtoul(tar.chksum, 8);
if (sum_u != sum && sum_s != sum) {
bb_error_msg_and_die("invalid tar header checksum");
}
/* 0 is reserved for high perf file, treat as normal file */
if (!tar.typeflag) tar.typeflag = '0';
parse_names = (tar.typeflag >= '0' && tar.typeflag <= '7');
/* getOctal trashes subsequent field, therefore we call it
* on fields in reverse order */
if (tar.devmajor[0]) {
unsigned minor = GET_OCTAL(tar.devminor);
unsigned major = GET_OCTAL(tar.devmajor);
file_header->device = makedev(major, minor);
}
file_header->link_name = NULL;
if (!linkname && parse_names && tar.linkname[0]) {
/* we trash magic[0] here, it's ok */
tar.linkname[sizeof(tar.linkname)] = '\0';
file_header->link_name = xstrdup(tar.linkname);
/* FIXME: what if we have non-link object with link_name? */
/* Will link_name be free()ed? */
}
file_header->mtime = GET_OCTAL(tar.mtime);
file_header->size = GET_OCTAL(tar.size);
file_header->gid = GET_OCTAL(tar.gid);
file_header->uid = GET_OCTAL(tar.uid);
/* Set bits 0-11 of the files mode */
file_header->mode = 07777 & GET_OCTAL(tar.mode);
file_header->name = NULL;
if (!longname && parse_names) {
/* we trash mode[0] here, it's ok */
tar.name[sizeof(tar.name)] = '\0';
if (tar.prefix[0]) {
/* and padding[0] */
tar.prefix[sizeof(tar.prefix)] = '\0';
file_header->name = concat_path_file(tar.prefix, tar.name);
} else
file_header->name = xstrdup(tar.name);
}
/* Set bits 12-15 of the files mode */
/* (typeflag was not trashed because chksum does not use getOctal) */
switch (tar.typeflag) {
/* busybox identifies hard links as being regular files with 0 size and a link name */
case '1':
file_header->mode |= S_IFREG;
break;
case '7':
/* case 0: */
case '0':
#if ENABLE_FEATURE_TAR_OLDGNU_COMPATIBILITY
if (last_char_is(file_header->name, '/')) {
file_header->mode |= S_IFDIR;
} else
#endif
file_header->mode |= S_IFREG;
break;
case '2':
file_header->mode |= S_IFLNK;
break;
case '3':
file_header->mode |= S_IFCHR;
break;
case '4':
file_header->mode |= S_IFBLK;
break;
case '5':
file_header->mode |= S_IFDIR;
break;
case '6':
file_header->mode |= S_IFIFO;
break;
#if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
case 'L':
/* free: paranoia: tar with several consecutive longnames */
free(longname);
/* For paranoia reasons we allocate extra NUL char */
longname = xzalloc(file_header->size + 1);
/* We read ASCIZ string, including NUL */
xread(archive_handle->src_fd, longname, file_header->size);
archive_handle->offset += file_header->size;
/* return get_header_tar(archive_handle); */
/* gcc 4.1.1 didn't optimize it into jump */
/* so we will do it ourself, this also saves stack */
goto again;
case 'K':
free(linkname);
linkname = xzalloc(file_header->size + 1);
xread(archive_handle->src_fd, linkname, file_header->size);
archive_handle->offset += file_header->size;
/* return get_header_tar(archive_handle); */
goto again;
case 'D': /* GNU dump dir */
case 'M': /* Continuation of multi volume archive */
case 'N': /* Old GNU for names > 100 characters */
case 'S': /* Sparse file */
case 'V': /* Volume header */
#endif
case 'g': /* pax global header */
case 'x': { /* pax extended header */
off_t sz;
bb_error_msg("warning: skipping header '%c'", tar.typeflag);
sz = (file_header->size + 511) & ~(off_t)511;
archive_handle->offset += sz;
sz >>= 9; /* sz /= 512 but w/o contortions for signed div */
while (sz--)
xread(archive_handle->src_fd, &tar, 512);
/* return get_header_tar(archive_handle); */
goto again_after_align;
}
default:
bb_error_msg_and_die("unknown typeflag: 0x%x", tar.typeflag);
}
#if ENABLE_FEATURE_TAR_GNU_EXTENSIONS
if (longname) {
file_header->name = longname;
longname = NULL;
}
if (linkname) {
file_header->link_name = linkname;
linkname = NULL;
}
#endif
if (!strncmp(file_header->name, "/../"+1, 3)
|| strstr(file_header->name, "/../")
) {
bb_error_msg_and_die("name with '..' encountered: '%s'",
file_header->name);
}
/* Strip trailing '/' in directories */
/* Must be done after mode is set as '/' is used to check if it's a directory */
cp = last_char_is(file_header->name, '/');
if (archive_handle->filter(archive_handle) == EXIT_SUCCESS) {
archive_handle->action_header(archive_handle->file_header);
/* Note that we kill the '/' only after action_header() */
/* (like GNU tar 1.15.1: verbose mode outputs "dir/dir/") */
if (cp) *cp = '\0';
archive_handle->flags |= ARCHIVE_EXTRACT_QUIET;
archive_handle->action_data(archive_handle);
llist_add_to(&(archive_handle->passed), file_header->name);
} else {
data_skip(archive_handle);
free(file_header->name);
}
archive_handle->offset += file_header->size;
free(file_header->link_name);
/* Do not free(file_header->name)! */
return EXIT_SUCCESS;
}
