fa5a7a41a6
Add DDEBUG in Makefile when CONFIG_QNX6FS_DEBUG is set. All QNX6DEBUG messages are replaced by pr_debug which means debugging will be emitted in debug level only and no more in error and info levels. debug uses now pr_fmt and __func__ QNX6DEBUG definition has been removed. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Joe Perches <joe@perches.com> Cc: Kai Bankett <chaosman@ontika.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
136 lines
3.3 KiB
C
136 lines
3.3 KiB
C
/*
|
|
* QNX6 file system, Linux implementation.
|
|
*
|
|
* Version : 1.0.0
|
|
*
|
|
* History :
|
|
*
|
|
* 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release.
|
|
* 16-02-2012 page map extension by Al Viro
|
|
*
|
|
*/
|
|
|
|
#ifdef pr_fmt
|
|
#undef pr_fmt
|
|
#endif
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/pagemap.h>
|
|
|
|
typedef __u16 __bitwise __fs16;
|
|
typedef __u32 __bitwise __fs32;
|
|
typedef __u64 __bitwise __fs64;
|
|
|
|
#include <linux/qnx6_fs.h>
|
|
|
|
struct qnx6_sb_info {
|
|
struct buffer_head *sb_buf; /* superblock buffer */
|
|
struct qnx6_super_block *sb; /* our superblock */
|
|
int s_blks_off; /* blkoffset fs-startpoint */
|
|
int s_ptrbits; /* indirect pointer bitfield */
|
|
unsigned long s_mount_opt; /* all mount options */
|
|
int s_bytesex; /* holds endianess info */
|
|
struct inode * inodes;
|
|
struct inode * longfile;
|
|
};
|
|
|
|
struct qnx6_inode_info {
|
|
__fs32 di_block_ptr[QNX6_NO_DIRECT_POINTERS];
|
|
__u8 di_filelevels;
|
|
__u32 i_dir_start_lookup;
|
|
struct inode vfs_inode;
|
|
};
|
|
|
|
extern struct inode *qnx6_iget(struct super_block *sb, unsigned ino);
|
|
extern struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry,
|
|
unsigned int flags);
|
|
|
|
#ifdef CONFIG_QNX6FS_DEBUG
|
|
extern void qnx6_superblock_debug(struct qnx6_super_block *,
|
|
struct super_block *);
|
|
#endif
|
|
|
|
extern const struct inode_operations qnx6_dir_inode_operations;
|
|
extern const struct file_operations qnx6_dir_operations;
|
|
|
|
static inline struct qnx6_sb_info *QNX6_SB(struct super_block *sb)
|
|
{
|
|
return sb->s_fs_info;
|
|
}
|
|
|
|
static inline struct qnx6_inode_info *QNX6_I(struct inode *inode)
|
|
{
|
|
return container_of(inode, struct qnx6_inode_info, vfs_inode);
|
|
}
|
|
|
|
#define clear_opt(o, opt) (o &= ~(QNX6_MOUNT_##opt))
|
|
#define set_opt(o, opt) (o |= (QNX6_MOUNT_##opt))
|
|
#define test_opt(sb, opt) (QNX6_SB(sb)->s_mount_opt & \
|
|
QNX6_MOUNT_##opt)
|
|
enum {
|
|
BYTESEX_LE,
|
|
BYTESEX_BE,
|
|
};
|
|
|
|
static inline __u64 fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n)
|
|
{
|
|
if (sbi->s_bytesex == BYTESEX_LE)
|
|
return le64_to_cpu((__force __le64)n);
|
|
else
|
|
return be64_to_cpu((__force __be64)n);
|
|
}
|
|
|
|
static inline __fs64 cpu_to_fs64(struct qnx6_sb_info *sbi, __u64 n)
|
|
{
|
|
if (sbi->s_bytesex == BYTESEX_LE)
|
|
return (__force __fs64)cpu_to_le64(n);
|
|
else
|
|
return (__force __fs64)cpu_to_be64(n);
|
|
}
|
|
|
|
static inline __u32 fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n)
|
|
{
|
|
if (sbi->s_bytesex == BYTESEX_LE)
|
|
return le32_to_cpu((__force __le32)n);
|
|
else
|
|
return be32_to_cpu((__force __be32)n);
|
|
}
|
|
|
|
static inline __fs32 cpu_to_fs32(struct qnx6_sb_info *sbi, __u32 n)
|
|
{
|
|
if (sbi->s_bytesex == BYTESEX_LE)
|
|
return (__force __fs32)cpu_to_le32(n);
|
|
else
|
|
return (__force __fs32)cpu_to_be32(n);
|
|
}
|
|
|
|
static inline __u16 fs16_to_cpu(struct qnx6_sb_info *sbi, __fs16 n)
|
|
{
|
|
if (sbi->s_bytesex == BYTESEX_LE)
|
|
return le16_to_cpu((__force __le16)n);
|
|
else
|
|
return be16_to_cpu((__force __be16)n);
|
|
}
|
|
|
|
static inline __fs16 cpu_to_fs16(struct qnx6_sb_info *sbi, __u16 n)
|
|
{
|
|
if (sbi->s_bytesex == BYTESEX_LE)
|
|
return (__force __fs16)cpu_to_le16(n);
|
|
else
|
|
return (__force __fs16)cpu_to_be16(n);
|
|
}
|
|
|
|
extern struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s,
|
|
int silent);
|
|
|
|
static inline void qnx6_put_page(struct page *page)
|
|
{
|
|
kunmap(page);
|
|
page_cache_release(page);
|
|
}
|
|
|
|
extern unsigned qnx6_find_entry(int len, struct inode *dir, const char *name,
|
|
struct page **res_page);
|