int main(int argc, char **argv)
{
int c, bdev = -1;
unsigned i, ncache_devices = 0, nbacking_devices = 0;
char *cache_devices[argc];
char *backing_devices[argc];
unsigned block_size = 0, bucket_size = 1024;
int writeback = 0, discard = 0, wipe_bcache = 0;
unsigned cache_replacement_policy = 0;
uint64_t data_offset = BDEV_DATA_START_DEFAULT;
uuid_t set_uuid;
uuid_generate(set_uuid);
struct option opts[] = {
{ "cache", 0, NULL, 'C' },
{ "bdev", 0, NULL, 'B' },
{ "bucket", 1, NULL, 'b' },
{ "block", 1, NULL, 'w' },
{ "writeback", 0, &writeback, 1 },
{ "wipe-bcache", 0, &wipe_bcache, 1 },
{ "discard", 0, &discard, 1 },
{ "cache_replacement_policy", 1, NULL, 'p' },
{ "data_offset", 1, NULL, 'o' },
{ "cset-uuid", 1, NULL, 'u' },
{ "help", 0, NULL, 'h' },
{ NULL, 0, NULL, 0 },
};
while ((c = getopt_long(argc, argv,
"-hCBU:w:b:",
opts, NULL)) != -1)
switch (c) {
case 'C':
bdev = 0;
break;
case 'B':
bdev = 1;
break;
case 'b':
bucket_size = hatoi_validate(optarg, "bucket size");
break;
case 'w':
block_size = hatoi_validate(optarg, "block size");
break;
#if 0
case 'U':
if (uuid_parse(optarg, sb.uuid)) {
fprintf(stderr, "Bad uuid\n");
exit(EXIT_FAILURE);
}
break;
#endif
case 'p':
cache_replacement_policy = read_string_list(optarg,
cache_replacement_policies);
break;
case 'o':
data_offset = atoll(optarg);
if (data_offset < BDEV_DATA_START_DEFAULT) {
fprintf(stderr, "Bad data offset; minimum %d sectors\n",
BDEV_DATA_START_DEFAULT);
exit(EXIT_FAILURE);
}
break;
case 'u':
if (uuid_parse(optarg, set_uuid)) {
fprintf(stderr, "Bad uuid\n");
exit(EXIT_FAILURE);
}
break;
case 'h':
usage();
break;
case 1:
if (bdev == -1) {
fprintf(stderr, "Please specify -C or -B\n");
exit(EXIT_FAILURE);
}
if (bdev)
backing_devices[nbacking_devices++] = optarg;
else
cache_devices[ncache_devices++] = optarg;
break;
}
if (!ncache_devices && !nbacking_devices) {
fprintf(stderr, "Please supply a device\n");
usage();
}
if (bucket_size < block_size) {
fprintf(stderr, "Bucket size cannot be smaller than block size\n");
exit(EXIT_FAILURE);
}
if (!block_size) {
for (i = 0; i < ncache_devices; i++)
block_size = max(block_size,
get_blocksize(cache_devices[i]));
for (i = 0; i < nbacking_devices; i++)
block_size = max(block_size,
get_blocksize(backing_devices[i]));
}
for (i = 0; i < ncache_devices; i++)
write_sb(cache_devices[i], block_size, bucket_size,
writeback, discard, wipe_bcache,
cache_replacement_policy,
data_offset, set_uuid, false);
for (i = 0; i < nbacking_devices; i++)
write_sb(backing_devices[i], block_size, bucket_size,
writeback, discard, wipe_bcache,
cache_replacement_policy,
data_offset, set_uuid, true);
return 0;
}
static bool
rtems_rfs_write_superblock (rtems_rfs_file_system* fs)
{
rtems_rfs_buffer_handle handle;
uint8_t* sb;
int rc;
rc = rtems_rfs_buffer_handle_open (fs, &handle);
if (rc > 0)
{
printf ("rtems-rfs: write-superblock: handle open failed: %d: %s\n",
rc, strerror (rc));
return false;
}
rc = rtems_rfs_buffer_handle_request (fs, &handle, 0, false);
if (rc > 0)
{
rtems_rfs_buffer_handle_close (fs, &handle);
printf ("rtems-rfs: write-superblock: request failed: %d: %s\n",
rc, strerror (rc));
return false;
}
sb = rtems_rfs_buffer_data (&handle);
#define write_sb(_o, _d) rtems_rfs_write_u32(sb + (_o), _d)
memset (sb, 0xff, rtems_rfs_fs_block_size (fs));
write_sb (RTEMS_RFS_SB_OFFSET_MAGIC, RTEMS_RFS_SB_MAGIC);
write_sb (RTEMS_RFS_SB_OFFSET_VERSION, RTEMS_RFS_VERSION);
write_sb (RTEMS_RFS_SB_OFFSET_BLOCKS, rtems_rfs_fs_blocks (fs));
write_sb (RTEMS_RFS_SB_OFFSET_BLOCK_SIZE, rtems_rfs_fs_block_size (fs));
write_sb (RTEMS_RFS_SB_OFFSET_BAD_BLOCKS, fs->bad_blocks);
write_sb (RTEMS_RFS_SB_OFFSET_MAX_NAME_LENGTH, fs->max_name_length);
write_sb (RTEMS_RFS_SB_OFFSET_GROUPS, fs->group_count);
write_sb (RTEMS_RFS_SB_OFFSET_GROUP_BLOCKS, fs->group_blocks);
write_sb (RTEMS_RFS_SB_OFFSET_GROUP_INODES, fs->group_inodes);
write_sb (RTEMS_RFS_SB_OFFSET_INODE_SIZE, RTEMS_RFS_INODE_SIZE);
rtems_rfs_buffer_mark_dirty (&handle);
rc = rtems_rfs_buffer_handle_release (fs, &handle);
if (rc > 0)
{
rtems_rfs_buffer_handle_close (fs, &handle);
printf ("rtems-rfs: write-superblock: buffer release failed: %d: %s\n",
rc, strerror (rc));
return false;
}
rc = rtems_rfs_buffer_handle_close (fs, &handle);
if (rc > 0)
{
printf ("rtems-rfs: write-superblock: buffer handle close failed: %d: %s\n",
rc, strerror (rc));
return false;
}
return true;
}
