Lines Matching refs:fs
66 static unsigned int calc_reserved_gdt_blocks(ext2_filsys fs)
68 struct ext2_super_block *sb = fs->super;
70 unsigned int gdpb = fs->blocksize / sizeof(struct ext2_group_desc);
81 rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) - fs->desc_blocks;
96 ext2_filsys fs;
113 retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);
117 memset(fs, 0, sizeof(struct struct_ext2_filsys));
118 fs->magic = EXT2_ET_MAGIC_EXT2FS_FILSYS;
119 fs->flags = flags | EXT2_FLAG_RW;
120 fs->umask = 022;
122 fs->flags |= EXT2_FLAG_SWAP_BYTES;
127 retval = manager->open(name, io_flags, &fs->io);
130 fs->image_io = fs->io;
131 fs->io->app_data = fs;
132 retval = ext2fs_get_mem(strlen(name)+1, &fs->device_name);
136 strcpy(fs->device_name, name);
140 fs->super = super;
178 super->s_mkfs_time = super->s_lastcheck = fs->now ? fs->now : time(NULL);
182 fs->blocksize = EXT2_BLOCK_SIZE(super);
183 fs->fragsize = EXT2_FRAG_SIZE(super);
184 frags_per_block = fs->blocksize / fs->fragsize;
186 /* default: (fs->blocksize*8) blocks/group, up to 2^16 (GDT limit) */
187 set_field(s_blocks_per_group, fs->blocksize * 8);
204 fs->group_desc_count = 0;
205 ext2fs_mark_super_dirty(fs);
206 *ret_fs = fs;
211 fs->group_desc_count = ext2fs_div_ceil(super->s_blocks_count -
214 if (fs->group_desc_count == 0) {
218 fs->desc_blocks = ext2fs_div_ceil(fs->group_desc_count,
221 i = fs->blocksize >= 4096 ? 1 : 4096 / fs->blocksize;
237 ipg = ext2fs_div_ceil(super->s_inodes_count, fs->group_desc_count);
238 if (ipg > fs->blocksize * 8) {
261 fs->inode_blocks_per_group = (((super->s_inodes_per_group *
265 super->s_inodes_per_group = ((fs->inode_blocks_per_group *
274 fs->inode_blocks_per_group = (((super->s_inodes_per_group *
282 if ((__u64)super->s_inodes_per_group * fs->group_desc_count > ~0U) {
287 fs->group_desc_count;
294 rsv_gdt = calc_reserved_gdt_blocks(fs);
309 overhead = (int) (3 + fs->inode_blocks_per_group +
310 fs->desc_blocks + super->s_reserved_gdt_blocks);
323 overhead = (int) (2 + fs->inode_blocks_per_group);
324 if (ext2fs_bg_has_super(fs, fs->group_desc_count - 1))
325 overhead += 1 + fs->desc_blocks + super->s_reserved_gdt_blocks;
328 if ((fs->group_desc_count == 1) && rem && (rem < overhead))
341 retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf);
345 sprintf(buf, "block bitmap for %s", fs->device_name);
346 retval = ext2fs_allocate_block_bitmap(fs, buf, &fs->block_map);
350 sprintf(buf, "inode bitmap for %s", fs->device_name);
351 retval = ext2fs_allocate_inode_bitmap(fs, buf, &fs->inode_map);
357 retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
358 &fs->group_desc);
362 memset(fs->group_desc, 0, (size_t) fs->desc_blocks * fs->blocksize);
372 for (i = 0; i < fs->group_desc_count; i++) {
373 numblocks = ext2fs_reserve_super_and_bgd(fs, i, fs->block_map);
376 fs->group_desc[i].bg_free_blocks_count = numblocks;
377 fs->group_desc[i].bg_free_inodes_count =
378 fs->super->s_inodes_per_group;
379 fs->group_desc[i].bg_used_dirs_count = 0;
389 ext2fs_mark_super_dirty(fs);
390 ext2fs_mark_bb_dirty(fs);
391 ext2fs_mark_ib_dirty(fs);
393 io_channel_set_blksize(fs->io, fs->blocksize);
395 *ret_fs = fs;
398 ext2fs_free(fs);
