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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * QNX6 file system, Linux implementation.4 *5 * Version : 1.0.06 *7 * History :8 *9 * 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release.10 * 16-02-2012 page map extension by Al Viro11 *12 */13 14#ifdef pr_fmt15#undef pr_fmt16#endif17 18#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt19 20#include <linux/fs.h>21#include <linux/pagemap.h>22 23typedef __u16 __bitwise __fs16;24typedef __u32 __bitwise __fs32;25typedef __u64 __bitwise __fs64;26 27#include <linux/qnx6_fs.h>28 29struct qnx6_sb_info {30 struct buffer_head *sb_buf; /* superblock buffer */31 struct qnx6_super_block *sb; /* our superblock */32 int s_blks_off; /* blkoffset fs-startpoint */33 int s_ptrbits; /* indirect pointer bitfield */34 unsigned long s_mount_opt; /* all mount options */35 int s_bytesex; /* holds endianess info */36 struct inode * inodes;37 struct inode * longfile;38};39 40struct qnx6_inode_info {41 __fs32 di_block_ptr[QNX6_NO_DIRECT_POINTERS];42 __u8 di_filelevels;43 __u32 i_dir_start_lookup;44 struct inode vfs_inode;45};46 47extern struct inode *qnx6_iget(struct super_block *sb, unsigned ino);48extern struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry,49 unsigned int flags);50 51#ifdef CONFIG_QNX6FS_DEBUG52extern void qnx6_superblock_debug(struct qnx6_super_block *,53 struct super_block *);54#endif55 56extern const struct inode_operations qnx6_dir_inode_operations;57extern const struct file_operations qnx6_dir_operations;58 59static inline struct qnx6_sb_info *QNX6_SB(struct super_block *sb)60{61 return sb->s_fs_info;62}63 64static inline struct qnx6_inode_info *QNX6_I(struct inode *inode)65{66 return container_of(inode, struct qnx6_inode_info, vfs_inode);67}68 69#define clear_opt(o, opt) (o &= ~(QNX6_MOUNT_##opt))70#define set_opt(o, opt) (o |= (QNX6_MOUNT_##opt))71#define test_opt(sb, opt) (QNX6_SB(sb)->s_mount_opt & \72 QNX6_MOUNT_##opt)73enum {74 BYTESEX_LE,75 BYTESEX_BE,76};77 78static inline __u64 fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n)79{80 if (sbi->s_bytesex == BYTESEX_LE)81 return le64_to_cpu((__force __le64)n);82 else83 return be64_to_cpu((__force __be64)n);84}85 86static inline __fs64 cpu_to_fs64(struct qnx6_sb_info *sbi, __u64 n)87{88 if (sbi->s_bytesex == BYTESEX_LE)89 return (__force __fs64)cpu_to_le64(n);90 else91 return (__force __fs64)cpu_to_be64(n);92}93 94static inline __u32 fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n)95{96 if (sbi->s_bytesex == BYTESEX_LE)97 return le32_to_cpu((__force __le32)n);98 else99 return be32_to_cpu((__force __be32)n);100}101 102static inline __fs32 cpu_to_fs32(struct qnx6_sb_info *sbi, __u32 n)103{104 if (sbi->s_bytesex == BYTESEX_LE)105 return (__force __fs32)cpu_to_le32(n);106 else107 return (__force __fs32)cpu_to_be32(n);108}109 110static inline __u16 fs16_to_cpu(struct qnx6_sb_info *sbi, __fs16 n)111{112 if (sbi->s_bytesex == BYTESEX_LE)113 return le16_to_cpu((__force __le16)n);114 else115 return be16_to_cpu((__force __be16)n);116}117 118static inline __fs16 cpu_to_fs16(struct qnx6_sb_info *sbi, __u16 n)119{120 if (sbi->s_bytesex == BYTESEX_LE)121 return (__force __fs16)cpu_to_le16(n);122 else123 return (__force __fs16)cpu_to_be16(n);124}125 126extern struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s,127 int silent);128 129unsigned qnx6_find_ino(int len, struct inode *dir, const char *name);130