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linux/fs.h: add types and routines needed for SquashFS 

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Yegor Yefremov 2016-03-01 12:10:03 +01:00 committed by Sascha Hauer
parent 196dccdfcf
commit 237abe7bb8
1 changed files with 27 additions and 0 deletions
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27
include/linux/fs.h
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@ -18,6 +18,26 @@
#define MAX_LFS_FILESIZE ((loff_t)0x7fffffffffffffffLL)
#endif
/*
* File types
*
* NOTE! These match bits 12..15 of stat.st_mode
* (ie "(i_mode >> 12) & 15").
*/
#define DT_UNKNOWN 0
#define DT_FIFO 1
#define DT_CHR 2
#define DT_DIR 4
#define DT_BLK 6
#define DT_REG 8
#define DT_LNK 10
#define DT_SOCK 12
#define DT_WHT 14
struct dir_context {
loff_t pos;
};
/*
* These are the fs-independent mount-flags: up to 32 flags are supported
*/
@ -74,6 +94,7 @@ struct inode {
struct timespec i_mtime;
struct timespec i_ctime;
unsigned int i_blkbits;
blkcnt_t i_blocks;
unsigned short i_bytes;
umode_t i_mode;
spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */
@ -194,6 +215,7 @@ struct file_system_type {
struct file {
struct path f_path;
struct inode *f_inode; /* cached value */
#define f_dentry f_path.dentry
#define f_vfsmnt f_path.mnt
const struct file_operations *f_op;
@ -361,4 +383,9 @@ struct file {
#define I_DIRTY (I_DIRTY_SYNC | I_DIRTY_DATASYNC | I_DIRTY_PAGES)
#define I_DIRTY_ALL (I_DIRTY | I_DIRTY_TIME)
static inline loff_t i_size_read(const struct inode *inode)
{
return inode->i_size;
}
#endif /* _LINUX_FS_H */