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136 lines
3.3 KiB
136 lines
3.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* QNX6 file system, Linux implementation. |
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* |
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* Version : 1.0.0 |
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* |
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* History : |
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* |
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* 01-02-2012 by Kai Bankett ([email protected]) : first release. |
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* 16-02-2012 page map extension by Al Viro |
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* |
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*/ |
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#ifdef pr_fmt |
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#undef pr_fmt |
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#endif |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/fs.h> |
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#include <linux/pagemap.h> |
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typedef __u16 __bitwise __fs16; |
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typedef __u32 __bitwise __fs32; |
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typedef __u64 __bitwise __fs64; |
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#include <linux/qnx6_fs.h> |
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struct qnx6_sb_info { |
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struct buffer_head *sb_buf; /* superblock buffer */ |
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struct qnx6_super_block *sb; /* our superblock */ |
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int s_blks_off; /* blkoffset fs-startpoint */ |
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int s_ptrbits; /* indirect pointer bitfield */ |
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unsigned long s_mount_opt; /* all mount options */ |
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int s_bytesex; /* holds endianess info */ |
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struct inode * inodes; |
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struct inode * longfile; |
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}; |
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struct qnx6_inode_info { |
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__fs32 di_block_ptr[QNX6_NO_DIRECT_POINTERS]; |
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__u8 di_filelevels; |
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__u32 i_dir_start_lookup; |
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struct inode vfs_inode; |
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}; |
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extern struct inode *qnx6_iget(struct super_block *sb, unsigned ino); |
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extern struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry, |
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unsigned int flags); |
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#ifdef CONFIG_QNX6FS_DEBUG |
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extern void qnx6_superblock_debug(struct qnx6_super_block *, |
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struct super_block *); |
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#endif |
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extern const struct inode_operations qnx6_dir_inode_operations; |
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extern const struct file_operations qnx6_dir_operations; |
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static inline struct qnx6_sb_info *QNX6_SB(struct super_block *sb) |
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{ |
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return sb->s_fs_info; |
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} |
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static inline struct qnx6_inode_info *QNX6_I(struct inode *inode) |
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{ |
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return container_of(inode, struct qnx6_inode_info, vfs_inode); |
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} |
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#define clear_opt(o, opt) (o &= ~(QNX6_MOUNT_##opt)) |
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#define set_opt(o, opt) (o |= (QNX6_MOUNT_##opt)) |
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#define test_opt(sb, opt) (QNX6_SB(sb)->s_mount_opt & \ |
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QNX6_MOUNT_##opt) |
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enum { |
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BYTESEX_LE, |
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BYTESEX_BE, |
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}; |
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static inline __u64 fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n) |
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{ |
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if (sbi->s_bytesex == BYTESEX_LE) |
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return le64_to_cpu((__force __le64)n); |
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else |
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return be64_to_cpu((__force __be64)n); |
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} |
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static inline __fs64 cpu_to_fs64(struct qnx6_sb_info *sbi, __u64 n) |
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{ |
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if (sbi->s_bytesex == BYTESEX_LE) |
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return (__force __fs64)cpu_to_le64(n); |
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else |
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return (__force __fs64)cpu_to_be64(n); |
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} |
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static inline __u32 fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n) |
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{ |
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if (sbi->s_bytesex == BYTESEX_LE) |
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return le32_to_cpu((__force __le32)n); |
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else |
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return be32_to_cpu((__force __be32)n); |
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} |
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static inline __fs32 cpu_to_fs32(struct qnx6_sb_info *sbi, __u32 n) |
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{ |
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if (sbi->s_bytesex == BYTESEX_LE) |
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return (__force __fs32)cpu_to_le32(n); |
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else |
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return (__force __fs32)cpu_to_be32(n); |
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} |
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static inline __u16 fs16_to_cpu(struct qnx6_sb_info *sbi, __fs16 n) |
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{ |
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if (sbi->s_bytesex == BYTESEX_LE) |
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return le16_to_cpu((__force __le16)n); |
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else |
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return be16_to_cpu((__force __be16)n); |
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} |
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static inline __fs16 cpu_to_fs16(struct qnx6_sb_info *sbi, __u16 n) |
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{ |
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if (sbi->s_bytesex == BYTESEX_LE) |
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return (__force __fs16)cpu_to_le16(n); |
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else |
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return (__force __fs16)cpu_to_be16(n); |
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} |
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extern struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s, |
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int silent); |
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static inline void qnx6_put_page(struct page *page) |
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{ |
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kunmap(page); |
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put_page(page); |
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} |
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extern unsigned qnx6_find_entry(int len, struct inode *dir, const char *name, |
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struct page **res_page);
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