^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * QNX6 file system, Linux implementation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Version : 1.0.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * History :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * 16-02-2012 pagemap extension by Al Viro
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/highuid.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/buffer_head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/writeback.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/statfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/parser.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/crc32.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/mpage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "qnx6.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static const struct super_operations qnx6_sops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static void qnx6_put_super(struct super_block *sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static struct inode *qnx6_alloc_inode(struct super_block *sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static void qnx6_free_inode(struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int qnx6_remount(struct super_block *sb, int *flags, char *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static int qnx6_statfs(struct dentry *dentry, struct kstatfs *buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static int qnx6_show_options(struct seq_file *seq, struct dentry *root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static const struct super_operations qnx6_sops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) .alloc_inode = qnx6_alloc_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) .free_inode = qnx6_free_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .put_super = qnx6_put_super,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .statfs = qnx6_statfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) .remount_fs = qnx6_remount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) .show_options = qnx6_show_options,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static int qnx6_show_options(struct seq_file *seq, struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct super_block *sb = root->d_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct qnx6_sb_info *sbi = QNX6_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (sbi->s_mount_opt & QNX6_MOUNT_MMI_FS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) seq_puts(seq, ",mmi_fs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static int qnx6_remount(struct super_block *sb, int *flags, char *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) sync_filesystem(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) *flags |= SB_RDONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static unsigned qnx6_get_devblock(struct super_block *sb, __fs32 block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct qnx6_sb_info *sbi = QNX6_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return fs32_to_cpu(sbi, block) + sbi->s_blks_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static unsigned qnx6_block_map(struct inode *inode, unsigned iblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int qnx6_get_block(struct inode *inode, sector_t iblock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct buffer_head *bh, int create)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) unsigned phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) pr_debug("qnx6_get_block inode=[%ld] iblock=[%ld]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) inode->i_ino, (unsigned long)iblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) phys = qnx6_block_map(inode, iblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (phys) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* logical block is before EOF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) map_bh(bh, inode->i_sb, phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static int qnx6_check_blockptr(__fs32 ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (ptr == ~(__fs32)0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) pr_err("hit unused blockpointer.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static int qnx6_readpage(struct file *file, struct page *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return mpage_readpage(page, qnx6_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static void qnx6_readahead(struct readahead_control *rac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) mpage_readahead(rac, qnx6_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * returns the block number for the no-th element in the tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * inodebits requred as there are multiple inodes in one inode block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static unsigned qnx6_block_map(struct inode *inode, unsigned no)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct super_block *s = inode->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct qnx6_sb_info *sbi = QNX6_SB(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct qnx6_inode_info *ei = QNX6_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) unsigned block = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) __fs32 ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) int levelptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int ptrbits = sbi->s_ptrbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int bitdelta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) u32 mask = (1 << ptrbits) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int depth = ei->di_filelevels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) bitdelta = ptrbits * depth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) levelptr = no >> bitdelta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (levelptr > QNX6_NO_DIRECT_POINTERS - 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) pr_err("Requested file block number (%u) too big.", no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) block = qnx6_get_devblock(s, ei->di_block_ptr[levelptr]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) for (i = 0; i < depth; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) bh = sb_bread(s, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (!bh) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) pr_err("Error reading block (%u)\n", block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) bitdelta -= ptrbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) levelptr = (no >> bitdelta) & mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ptr = ((__fs32 *)bh->b_data)[levelptr];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (!qnx6_check_blockptr(ptr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) block = qnx6_get_devblock(s, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static int qnx6_statfs(struct dentry *dentry, struct kstatfs *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct super_block *sb = dentry->d_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct qnx6_sb_info *sbi = QNX6_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) buf->f_type = sb->s_magic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) buf->f_bsize = sb->s_blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) buf->f_blocks = fs32_to_cpu(sbi, sbi->sb->sb_num_blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) buf->f_bfree = fs32_to_cpu(sbi, sbi->sb->sb_free_blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) buf->f_files = fs32_to_cpu(sbi, sbi->sb->sb_num_inodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) buf->f_ffree = fs32_to_cpu(sbi, sbi->sb->sb_free_inodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) buf->f_bavail = buf->f_bfree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) buf->f_namelen = QNX6_LONG_NAME_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) buf->f_fsid = u64_to_fsid(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * Check the root directory of the filesystem to make sure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * it really _is_ a qnx6 filesystem, and to check the size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * of the directory entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static const char *qnx6_checkroot(struct super_block *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static char match_root[2][3] = {".\0\0", "..\0"};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int i, error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct qnx6_dir_entry *dir_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct inode *root = d_inode(s->s_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct address_space *mapping = root->i_mapping;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct page *page = read_mapping_page(mapping, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (IS_ERR(page))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return "error reading root directory";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) kmap(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) dir_entry = page_address(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) for (i = 0; i < 2; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /* maximum 3 bytes - due to match_root limitation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (strncmp(dir_entry[i].de_fname, match_root[i], 3))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) error = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) qnx6_put_page(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return "error reading root directory.";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) #ifdef CONFIG_QNX6FS_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) void qnx6_superblock_debug(struct qnx6_super_block *sb, struct super_block *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) struct qnx6_sb_info *sbi = QNX6_SB(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) pr_debug("magic: %08x\n", fs32_to_cpu(sbi, sb->sb_magic));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) pr_debug("checksum: %08x\n", fs32_to_cpu(sbi, sb->sb_checksum));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) pr_debug("serial: %llx\n", fs64_to_cpu(sbi, sb->sb_serial));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) pr_debug("flags: %08x\n", fs32_to_cpu(sbi, sb->sb_flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) pr_debug("blocksize: %08x\n", fs32_to_cpu(sbi, sb->sb_blocksize));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) pr_debug("num_inodes: %08x\n", fs32_to_cpu(sbi, sb->sb_num_inodes));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) pr_debug("free_inodes: %08x\n", fs32_to_cpu(sbi, sb->sb_free_inodes));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) pr_debug("num_blocks: %08x\n", fs32_to_cpu(sbi, sb->sb_num_blocks));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) pr_debug("free_blocks: %08x\n", fs32_to_cpu(sbi, sb->sb_free_blocks));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) pr_debug("inode_levels: %02x\n", sb->Inode.levels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) Opt_mmifs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) Opt_err
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static const match_table_t tokens = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {Opt_mmifs, "mmi_fs"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {Opt_err, NULL}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) static int qnx6_parse_options(char *options, struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) struct qnx6_sb_info *sbi = QNX6_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) substring_t args[MAX_OPT_ARGS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (!options)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) while ((p = strsep(&options, ",")) != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) int token;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (!*p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) token = match_token(p, tokens, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) switch (token) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) case Opt_mmifs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) set_opt(sbi->s_mount_opt, MMI_FS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static struct buffer_head *qnx6_check_first_superblock(struct super_block *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) int offset, int silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) struct qnx6_sb_info *sbi = QNX6_SB(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) struct qnx6_super_block *sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /* Check the superblock signatures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) start with the first superblock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) bh = sb_bread(s, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (!bh) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) pr_err("unable to read the first superblock\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) sb = (struct qnx6_super_block *)bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (fs32_to_cpu(sbi, sb->sb_magic) != QNX6_SUPER_MAGIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) sbi->s_bytesex = BYTESEX_BE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (fs32_to_cpu(sbi, sb->sb_magic) == QNX6_SUPER_MAGIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) /* we got a big endian fs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) pr_debug("fs got different endianness.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) return bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) sbi->s_bytesex = BYTESEX_LE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (!silent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (offset == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) pr_err("wrong signature (magic) in superblock #1.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) pr_info("wrong signature (magic) at position (0x%lx) - will try alternative position (0x0000).\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) offset * s->s_blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) static struct inode *qnx6_private_inode(struct super_block *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct qnx6_root_node *p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) static int qnx6_fill_super(struct super_block *s, void *data, int silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) struct buffer_head *bh1 = NULL, *bh2 = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct qnx6_super_block *sb1 = NULL, *sb2 = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) struct qnx6_sb_info *sbi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) struct inode *root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) const char *errmsg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct qnx6_sb_info *qs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) u64 offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) int bootblock_offset = QNX6_BOOTBLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) qs = kzalloc(sizeof(struct qnx6_sb_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (!qs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) s->s_fs_info = qs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /* Superblock always is 512 Byte long */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (!sb_set_blocksize(s, QNX6_SUPERBLOCK_SIZE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) pr_err("unable to set blocksize\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) goto outnobh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /* parse the mount-options */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (!qnx6_parse_options((char *) data, s)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) pr_err("invalid mount options.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) goto outnobh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (test_opt(s, MMI_FS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) sb1 = qnx6_mmi_fill_super(s, silent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (sb1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) goto mmi_success;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) goto outnobh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) sbi = QNX6_SB(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) sbi->s_bytesex = BYTESEX_LE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) /* Check the superblock signatures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) start with the first superblock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) bh1 = qnx6_check_first_superblock(s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) bootblock_offset / QNX6_SUPERBLOCK_SIZE, silent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (!bh1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) /* try again without bootblock offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) bh1 = qnx6_check_first_superblock(s, 0, silent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (!bh1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) pr_err("unable to read the first superblock\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) goto outnobh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) /* seems that no bootblock at partition start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) bootblock_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) sb1 = (struct qnx6_super_block *)bh1->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) #ifdef CONFIG_QNX6FS_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) qnx6_superblock_debug(sb1, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /* checksum check - start at byte 8 and end at byte 512 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (fs32_to_cpu(sbi, sb1->sb_checksum) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) crc32_be(0, (char *)(bh1->b_data + 8), 504)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) pr_err("superblock #1 checksum error\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) /* set new blocksize */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) if (!sb_set_blocksize(s, fs32_to_cpu(sbi, sb1->sb_blocksize))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) pr_err("unable to set blocksize\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) /* blocksize invalidates bh - pull it back in */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) brelse(bh1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) bh1 = sb_bread(s, bootblock_offset >> s->s_blocksize_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (!bh1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) goto outnobh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) sb1 = (struct qnx6_super_block *)bh1->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) /* calculate second superblock blocknumber */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) offset = fs32_to_cpu(sbi, sb1->sb_num_blocks) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) (bootblock_offset >> s->s_blocksize_bits) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) (QNX6_SUPERBLOCK_AREA >> s->s_blocksize_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) /* set bootblock offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) sbi->s_blks_off = (bootblock_offset >> s->s_blocksize_bits) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) (QNX6_SUPERBLOCK_AREA >> s->s_blocksize_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* next the second superblock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) bh2 = sb_bread(s, offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (!bh2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) pr_err("unable to read the second superblock\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) sb2 = (struct qnx6_super_block *)bh2->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (fs32_to_cpu(sbi, sb2->sb_magic) != QNX6_SUPER_MAGIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (!silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) pr_err("wrong signature (magic) in superblock #2.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) /* checksum check - start at byte 8 and end at byte 512 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) if (fs32_to_cpu(sbi, sb2->sb_checksum) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) crc32_be(0, (char *)(bh2->b_data + 8), 504)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) pr_err("superblock #2 checksum error\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (fs64_to_cpu(sbi, sb1->sb_serial) >=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) fs64_to_cpu(sbi, sb2->sb_serial)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) /* superblock #1 active */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) sbi->sb_buf = bh1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) sbi->sb = (struct qnx6_super_block *)bh1->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) brelse(bh2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) pr_info("superblock #1 active\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) /* superblock #2 active */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) sbi->sb_buf = bh2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) sbi->sb = (struct qnx6_super_block *)bh2->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) brelse(bh1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) pr_info("superblock #2 active\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) mmi_success:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) /* sanity check - limit maximum indirect pointer levels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (sb1->Inode.levels > QNX6_PTR_MAX_LEVELS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) pr_err("too many inode levels (max %i, sb %i)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) QNX6_PTR_MAX_LEVELS, sb1->Inode.levels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (sb1->Longfile.levels > QNX6_PTR_MAX_LEVELS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) pr_err("too many longfilename levels (max %i, sb %i)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) QNX6_PTR_MAX_LEVELS, sb1->Longfile.levels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) s->s_op = &qnx6_sops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) s->s_magic = QNX6_SUPER_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) s->s_flags |= SB_RDONLY; /* Yup, read-only yet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) s->s_time_min = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) s->s_time_max = U32_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) /* ease the later tree level calculations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) sbi = QNX6_SB(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) sbi->s_ptrbits = ilog2(s->s_blocksize / 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) sbi->inodes = qnx6_private_inode(s, &sb1->Inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (!sbi->inodes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) sbi->longfile = qnx6_private_inode(s, &sb1->Longfile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (!sbi->longfile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) goto out1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) /* prefetch root inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) root = qnx6_iget(s, QNX6_ROOT_INO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) if (IS_ERR(root)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) pr_err("get inode failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) ret = PTR_ERR(root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) goto out2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) s->s_root = d_make_root(root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (!s->s_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) goto out2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) errmsg = qnx6_checkroot(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (errmsg != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (!silent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) pr_err("%s\n", errmsg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) goto out3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) out3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) dput(s->s_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) s->s_root = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) out2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) iput(sbi->longfile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) out1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) iput(sbi->inodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (bh1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) brelse(bh1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (bh2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) brelse(bh2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) outnobh:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) kfree(qs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) s->s_fs_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) static void qnx6_put_super(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) struct qnx6_sb_info *qs = QNX6_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) brelse(qs->sb_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) iput(qs->longfile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) iput(qs->inodes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) kfree(qs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) sb->s_fs_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) static sector_t qnx6_bmap(struct address_space *mapping, sector_t block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) return generic_block_bmap(mapping, block, qnx6_get_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) static const struct address_space_operations qnx6_aops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) .readpage = qnx6_readpage,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) .readahead = qnx6_readahead,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) .bmap = qnx6_bmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) static struct inode *qnx6_private_inode(struct super_block *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) struct qnx6_root_node *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) struct inode *inode = new_inode(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) struct qnx6_inode_info *ei = QNX6_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) struct qnx6_sb_info *sbi = QNX6_SB(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) inode->i_size = fs64_to_cpu(sbi, p->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) memcpy(ei->di_block_ptr, p->ptr, sizeof(p->ptr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) ei->di_filelevels = p->levels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) inode->i_mode = S_IFREG | S_IRUSR; /* probably wrong */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) inode->i_mapping->a_ops = &qnx6_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) struct inode *qnx6_iget(struct super_block *sb, unsigned ino)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) struct qnx6_sb_info *sbi = QNX6_SB(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) struct qnx6_inode_entry *raw_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) struct qnx6_inode_info *ei;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) struct address_space *mapping;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) struct page *page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) u32 n, offs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) inode = iget_locked(sb, ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (!inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) if (!(inode->i_state & I_NEW))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) ei = QNX6_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) inode->i_mode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (ino == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) pr_err("bad inode number on dev %s: %u is out of range\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) sb->s_id, ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) iget_failed(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) return ERR_PTR(-EIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) n = (ino - 1) >> (PAGE_SHIFT - QNX6_INODE_SIZE_BITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) offs = (ino - 1) & (~PAGE_MASK >> QNX6_INODE_SIZE_BITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) mapping = sbi->inodes->i_mapping;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) page = read_mapping_page(mapping, n, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (IS_ERR(page)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) pr_err("major problem: unable to read inode from dev %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) sb->s_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) iget_failed(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) return ERR_CAST(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) kmap(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) raw_inode = ((struct qnx6_inode_entry *)page_address(page)) + offs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) inode->i_mode = fs16_to_cpu(sbi, raw_inode->di_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) i_uid_write(inode, (uid_t)fs32_to_cpu(sbi, raw_inode->di_uid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) i_gid_write(inode, (gid_t)fs32_to_cpu(sbi, raw_inode->di_gid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) inode->i_size = fs64_to_cpu(sbi, raw_inode->di_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) inode->i_mtime.tv_sec = fs32_to_cpu(sbi, raw_inode->di_mtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) inode->i_mtime.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) inode->i_atime.tv_sec = fs32_to_cpu(sbi, raw_inode->di_atime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) inode->i_atime.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) inode->i_ctime.tv_sec = fs32_to_cpu(sbi, raw_inode->di_ctime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) inode->i_ctime.tv_nsec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) /* calc blocks based on 512 byte blocksize */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) inode->i_blocks = (inode->i_size + 511) >> 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) memcpy(&ei->di_block_ptr, &raw_inode->di_block_ptr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) sizeof(raw_inode->di_block_ptr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) ei->di_filelevels = raw_inode->di_filelevels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (S_ISREG(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) inode->i_fop = &generic_ro_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) inode->i_mapping->a_ops = &qnx6_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) } else if (S_ISDIR(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) inode->i_op = &qnx6_dir_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) inode->i_fop = &qnx6_dir_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) inode->i_mapping->a_ops = &qnx6_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) } else if (S_ISLNK(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) inode->i_op = &page_symlink_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) inode_nohighmem(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) inode->i_mapping->a_ops = &qnx6_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) init_special_inode(inode, inode->i_mode, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) qnx6_put_page(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) unlock_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) static struct kmem_cache *qnx6_inode_cachep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) static struct inode *qnx6_alloc_inode(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) struct qnx6_inode_info *ei;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) ei = kmem_cache_alloc(qnx6_inode_cachep, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (!ei)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) return &ei->vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) static void qnx6_free_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) kmem_cache_free(qnx6_inode_cachep, QNX6_I(inode));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) static void init_once(void *foo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) struct qnx6_inode_info *ei = (struct qnx6_inode_info *) foo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) inode_init_once(&ei->vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) static int init_inodecache(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) qnx6_inode_cachep = kmem_cache_create("qnx6_inode_cache",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) sizeof(struct qnx6_inode_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) 0, (SLAB_RECLAIM_ACCOUNT|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) SLAB_MEM_SPREAD|SLAB_ACCOUNT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) init_once);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) if (!qnx6_inode_cachep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) static void destroy_inodecache(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * Make sure all delayed rcu free inodes are flushed before we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) * destroy cache.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) rcu_barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) kmem_cache_destroy(qnx6_inode_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) static struct dentry *qnx6_mount(struct file_system_type *fs_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) int flags, const char *dev_name, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) return mount_bdev(fs_type, flags, dev_name, data, qnx6_fill_super);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) static struct file_system_type qnx6_fs_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) .name = "qnx6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) .mount = qnx6_mount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) .kill_sb = kill_block_super,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) .fs_flags = FS_REQUIRES_DEV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) MODULE_ALIAS_FS("qnx6");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) static int __init init_qnx6_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) err = init_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) err = register_filesystem(&qnx6_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) destroy_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) pr_info("QNX6 filesystem 1.0.0 registered.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) static void __exit exit_qnx6_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) unregister_filesystem(&qnx6_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) destroy_inodecache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) module_init(init_qnx6_fs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) module_exit(exit_qnx6_fs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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