^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^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 page map 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) #ifdef pr_fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #undef pr_fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) typedef __u16 __bitwise __fs16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) typedef __u32 __bitwise __fs32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) typedef __u64 __bitwise __fs64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/qnx6_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct qnx6_sb_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct buffer_head *sb_buf; /* superblock buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct qnx6_super_block *sb; /* our superblock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int s_blks_off; /* blkoffset fs-startpoint */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) int s_ptrbits; /* indirect pointer bitfield */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) unsigned long s_mount_opt; /* all mount options */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int s_bytesex; /* holds endianess info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct inode * inodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct inode * longfile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct qnx6_inode_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) __fs32 di_block_ptr[QNX6_NO_DIRECT_POINTERS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) __u8 di_filelevels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) __u32 i_dir_start_lookup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct inode vfs_inode;
^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) extern struct inode *qnx6_iget(struct super_block *sb, unsigned ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) extern struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) unsigned int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #ifdef CONFIG_QNX6FS_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) extern void qnx6_superblock_debug(struct qnx6_super_block *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct super_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) extern const struct inode_operations qnx6_dir_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) extern const struct file_operations qnx6_dir_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static inline struct qnx6_sb_info *QNX6_SB(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return sb->s_fs_info;
^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 inline struct qnx6_inode_info *QNX6_I(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return container_of(inode, struct qnx6_inode_info, vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define clear_opt(o, opt) (o &= ~(QNX6_MOUNT_##opt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define set_opt(o, opt) (o |= (QNX6_MOUNT_##opt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define test_opt(sb, opt) (QNX6_SB(sb)->s_mount_opt & \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) QNX6_MOUNT_##opt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) BYTESEX_LE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) BYTESEX_BE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static inline __u64 fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (sbi->s_bytesex == BYTESEX_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return le64_to_cpu((__force __le64)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return be64_to_cpu((__force __be64)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static inline __fs64 cpu_to_fs64(struct qnx6_sb_info *sbi, __u64 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (sbi->s_bytesex == BYTESEX_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return (__force __fs64)cpu_to_le64(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return (__force __fs64)cpu_to_be64(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static inline __u32 fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (sbi->s_bytesex == BYTESEX_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return le32_to_cpu((__force __le32)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return be32_to_cpu((__force __be32)n);
^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 inline __fs32 cpu_to_fs32(struct qnx6_sb_info *sbi, __u32 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (sbi->s_bytesex == BYTESEX_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return (__force __fs32)cpu_to_le32(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return (__force __fs32)cpu_to_be32(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static inline __u16 fs16_to_cpu(struct qnx6_sb_info *sbi, __fs16 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (sbi->s_bytesex == BYTESEX_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return le16_to_cpu((__force __le16)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return be16_to_cpu((__force __be16)n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static inline __fs16 cpu_to_fs16(struct qnx6_sb_info *sbi, __u16 n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (sbi->s_bytesex == BYTESEX_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return (__force __fs16)cpu_to_le16(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return (__force __fs16)cpu_to_be16(n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) extern struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int silent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static inline void qnx6_put_page(struct page *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) kunmap(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) put_page(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) extern unsigned qnx6_find_entry(int len, struct inode *dir, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct page **res_page);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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