patch-1.3.94 linux/include/linux/ufs_fs.h

• Lines: 199
• Date: Mon Apr 22 11:01:45 1996
• Orig file: v1.3.93/linux/include/linux/ufs_fs.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.93/linux/include/linux/ufs_fs.h linux/include/linux/ufs_fs.h
@@ -0,0 +1,198 @@
+/*
+ *  linux/include/linux/ufs_fs.h
+ *
+ * Copyright (C) 1996
+ * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
+ * Laboratory for Computer Science Research Computing Facility
+ * Rutgers, The State University of New Jersey
+ *
+ * $Id: ufs_fs.h,v 1.1 1996/04/21 14:45:11 davem Exp $
+ *
+ */
+
+#ifndef __LINUX_UFS_FS_H
+#define __LINUX_UFS_FS_H
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/time.h>
+#include <linux/stat.h>
+
+#define UFS_BBLOCK 0
+#define UFS_BBSIZE 8192
+#define UFS_SBLOCK 8192
+#define UFS_SBSIZE 8192
+
+#define UFS_MAGIC 0x00011954
+
+#define UFS_FSIZE 1024
+#define UFS_BSIZE 8192
+
+#define UFS_NDADDR 12
+#define UFS_NINDIR 3
+
+#define UFS_ROOTINO 2
+
+#define UFS_USEEFT  ((__u16)65535)
+
+#define UFS_FSOK      0x7c269d38
+#define UFS_FSACTIVE  ((char)0x00)
+#define UFS_FSCLEAN   ((char)0x01)
+#define UFS_FSSTABLE  ((char)0x02)
+#define UFS_FSBAD     ((char)0xff)
+
+/* Flags for ufs_sb_info */
+#define UFS_DEBUG       0x00000001
+#define UFS_DEBUG_INODE 0x00000002
+#define UFS_DEBUG_NAMEI 0x00000004
+#define UFS_DEBUG_LINKS 0x00000008
+
+
+/* Test if the inode number is valid. */
+#define ufs_ino_ok(inode)  ((inode->i_ino < 2) &&  \
+	                    (inode->i_ino > (inode->i_sb->u.ufs_sb.s_ncg * inode->i_sb->u.ufs_sb.s_ipg - 1)))
+
+/* Convert (sb,cg) to the first physical block number for that cg. */
+#define ufs_cgstart(sb, cg)   \
+  (((sb)->u.ufs_sb.s_fpg * (cg)) + (sb)->u.ufs_sb.s_cgoffset * ((cg) & ~((sb)->u.ufs_sb.s_cgmask)))
+
+/* Convert (sb,cg) to the first phys. block number for inodes in that cg. */
+#define ufs_cgimin(sb, cg) (ufs_cgstart((sb), (cg)) + (sb)->u.ufs_sb.s_iblkno)
+#define ufs_cgdmin(sb, cg) (ufs_cgstart((sb), (cg)) + (sb)->u.ufs_sb.s_dblkno)
+
+/* Convert an inode number to a cg number. */
+/* XXX - this can be optimized if s_ipg is a power of 2. */
+#define ufs_ino2cg(inode)  ((inode)->i_ino/(inode)->i_sb->u.ufs_sb.s_ipg)
+
+#define	MAXNAMLEN 255
+
+struct direct {
+	__u32  d_ino;			/* inode number of this entry */
+	__u16  d_reclen;		/* length of this entry */
+	__u16  d_namlen;		/* actual length of d_name */
+	char   d_name[MAXNAMLEN + 1];	/* file name */
+};
+
+#define MAXMNTLEN 512
+#define MAXCSBUFS 32
+
+struct csum {
+	__u32	cs_ndir;	/* number of directories */
+	__u32	cs_nbfree;	/* number of free blocks */
+	__u32	cs_nifree;	/* number of free inodes */
+	__u32	cs_nffree;	/* number of free frags */
+};
+
+typedef struct _ufsquad {
+	__u32 val[2];
+} ufsquad;
+
+/*
+ * This is the actual superblock, as it is laid out on the disk.
+ */
+struct ufs_superblock {
+	__u32	fs_link;	/* UNUSED */
+	__u32	fs_rlink;	/* UNUSED */
+	__u32	fs_sblkno;
+	__u32	fs_cblkno;
+	__u32	fs_iblkno;
+	__u32	fs_dblkno;
+	__u32	fs_cgoffset;
+	__u32	fs_cgmask;
+	time_t	fs_time;	/* XXX - check type */
+	__u32	fs_size;
+	__u32	fs_dsize;
+	__u32	fs_ncg;
+	__u32	fs_bsize;
+	__u32	fs_fsize;
+	__u32	fs_frag;
+	__u32	fs_minfree;
+	__u32	fs_rotdelay;
+	__u32	fs_rps;
+	__u32	fs_bmask;
+	__u32	fs_fmask;
+	__u32	fs_bshift;
+	__u32	fs_fshift;
+	__u32	fs_maxcontig;
+	__u32	fs_maxbpg;
+	__u32	fs_fragshift;
+	__u32	fs_fsbtodb;
+	__u32	fs_sbsize;
+	__u32	fs_csmask;
+	__u32	fs_csshift;
+	__u32	fs_nindir;
+	__u32	fs_inopb;
+	__u32	fs_nspf;
+	__u32	fs_optim;
+	__u32	fs_XXX1;
+	__u32	fs_interleave;
+	__u32	fs_trackskew;
+	__u32	fs_id[2];
+	__u32	fs_csaddr;
+	__u32	fs_cssize;
+	__u32	fs_cgsize;
+	__u32	fs_ntrak;
+	__u32	fs_nsect;
+	__u32	fs_spc;
+	__u32	fs_ncyl;
+	__u32	fs_cpg;
+	__u32	fs_ipg;
+	__u32	fs_fpg;
+	struct csum fs_cstotal;
+	__u8	fs_fmod;
+	__u8	fs_clean;
+	__u8	fs_ronly;
+	__u8	fs_flags;
+	__u8	fs_fsmnt[MAXMNTLEN];
+	__u32	fs_cgrotor;
+	struct csum * fs_csp[MAXCSBUFS];
+	__u32	fs_cpc;
+	__u16	fs_opostbl[16][8];	/* old rotation block list head */
+	__s32	fs_sparecon[55];	/* reserved for future constants */
+	__s32	fs_state;		/* file system state time stamp */
+	ufsquad	fs_qbmask;		/* ~usb_bmask - for use with __s64 size */
+	ufsquad	fs_qfmask;		/* ~usb_fmask - for use with __s64 size */
+	__s32	fs_postblformat;	/* format of positional layout tables */
+	__s32	fs_nrpos;		/* number of rotaional positions */
+	__s32	fs_postbloff;		/* (__s16) rotation block list head */
+	__s32	fs_rotbloff;		/* (__u8) blocks for each rotation */
+	__s32	fs_magic;		/* magic number */
+	__u8	fs_space[1];		/* list of blocks for each rotation */
+
+};
+
+/*
+ * structure of an on-disk inode
+ */
+struct ufs_inode {
+	__u16	ui_mode;		/*  0x0 */
+	__u16	ui_nlink;		/*  0x2 */
+	__u16	ui_suid;		/*  0x4 */
+	__u16	ui_sgid;		/*  0x6 */
+	ufsquad	ui_size;		/*  0x8 */  /* XXX - should be __u64 */
+	struct timeval ui_atime;	/* 0x10 */
+	struct timeval ui_mtime;	/* 0x18 */
+	struct timeval ui_ctime;	/* 0x20 */
+	__u32	ui_db[UFS_NDADDR];		/* 0x28 data blocks */
+	__u32	ui_ib[UFS_NINDIR];		/* 0x58 indirect blocks */
+	__u32	ui_flags;		/* 0x64 unused */
+	__u32	ui_blocks;		/* 0x68 blocks in use */
+	__u32	ui_gen;			/* 0x6c generation number XXX - what is this? */
+	__u32	ui_shadow;		/* 0x70 shadow inode XXX - what is this?*/
+	__u32	ui_uid;			/* 0x74 long EFT version of uid */
+	__u32	ui_gid;			/* 0x78 long EFT version of gid */
+	__u32	ui_oeftflag;		/* 0x7c reserved */
+};
+
+extern int init_ufs_fs(void);
+
+#endif /* __LINUX_UFS_FS_H */
+/*
+ * Local Variables: ***
+ * c-indent-level: 8 ***
+ * c-continued-statement-offset: 8 ***
+ * c-brace-offset: -8 ***
+ * c-argdecl-indent: 0 ***
+ * c-label-offset: -8 ***
+ * End: ***
+ */