Beispiel #1
0
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;
}
Beispiel #3
0
/* 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
}
Beispiel #4
0
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);
}
Beispiel #5
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);
}
Beispiel #6
0
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;
}
Beispiel #7
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;
}