diff options
Diffstat (limited to 'libc/kernel/common/linux/efs_dir.h')
-rw-r--r-- | libc/kernel/common/linux/efs_dir.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/libc/kernel/common/linux/efs_dir.h b/libc/kernel/common/linux/efs_dir.h new file mode 100644 index 0000000..5be2762 --- /dev/null +++ b/libc/kernel/common/linux/efs_dir.h @@ -0,0 +1,45 @@ +/**************************************************************************** + **************************************************************************** + *** + *** This header was automatically generated from a Linux kernel header + *** of the same name, to make information necessary for userspace to + *** call into the kernel available to libc. It contains only constants, + *** structures, and macros generated from the original header, and thus, + *** contains no copyrightable information. + *** + **************************************************************************** + ****************************************************************************/ +#ifndef __EFS_DIR_H__ +#define __EFS_DIR_H__ + +#define EFS_DIRBSIZE_BITS EFS_BLOCKSIZE_BITS +#define EFS_DIRBSIZE (1 << EFS_DIRBSIZE_BITS) + +struct efs_dentry { + __be32 inode; + unsigned char namelen; + char name[3]; +}; + +#define EFS_DENTSIZE (sizeof(struct efs_dentry) - 3 + 1) +#define EFS_MAXNAMELEN ((1 << (sizeof(char) * 8)) - 1) + +#define EFS_DIRBLK_HEADERSIZE 4 +#define EFS_DIRBLK_MAGIC 0xbeef + +struct efs_dir { + __be16 magic; + unsigned char firstused; + unsigned char slots; + + unsigned char space[EFS_DIRBSIZE - EFS_DIRBLK_HEADERSIZE]; +}; + +#define EFS_MAXENTS ((EFS_DIRBSIZE - EFS_DIRBLK_HEADERSIZE) / (EFS_DENTSIZE + sizeof(char))) + +#define EFS_SLOTAT(dir, slot) EFS_REALOFF((dir)->space[slot]) + +#define EFS_REALOFF(offset) ((offset << 1)) + +#endif + |