3 Upper Case Table creation code.
5 Copyright (C) 2009, 2010 Andrew Nayenko
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 off_t uct_alignment(void)
28 return CLUSTER_SIZE(sb);
33 return sizeof(upcase_table);
36 static le32_t uct_checksum(void)
41 for (i = 0; i < sizeof(upcase_table); i++)
42 sum = ((sum << 31) | (sum >> 1)) + upcase_table[i];
43 return cpu_to_le32(sum);
46 int uct_write(off_t base, int fd)
48 if (write(fd, upcase_table, sizeof(upcase_table)) == -1)
50 upcase_entry.checksum = uct_checksum();
51 upcase_entry.start_cluster = cpu_to_le32(OFFSET_TO_CLUSTER(base));
52 upcase_entry.size = cpu_to_le64(sizeof(upcase_table));