imported original firmware WRT54GL_v4.30.11_11_US

1 files changed, 359 insertions, 0 deletions

diff --git a/release/src/linux/linux/include/linux/msdos_fs.h b/release/src/linux/linux/include/linux/msdos_fs.h
new file mode 100644
index 00000000..1baa0a77
--- /dev/null
+++ b/release/src/linux/linux/include/linux/msdos_fs.h
@@ -0,0 +1,359 @@
+#ifndef _LINUX_MSDOS_FS_H
+#define _LINUX_MSDOS_FS_H
+
+/*
+ * The MS-DOS filesystem constants/structures
+ */
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <linux/fd.h>
+
+#include <asm/byteorder.h>
+
+#define MSDOS_ROOT_INO  1 /* == MINIX_ROOT_INO */
+#define SECTOR_SIZE     512 /* sector size (bytes) */
+#define SECTOR_BITS	9 /* log2(SECTOR_SIZE) */
+#define MSDOS_DPB	(MSDOS_DPS) /* dir entries per block */
+#define MSDOS_DPB_BITS	4 /* log2(MSDOS_DPB) */
+#define MSDOS_DPS	(SECTOR_SIZE/sizeof(struct msdos_dir_entry))
+#define MSDOS_DPS_BITS	4 /* log2(MSDOS_DPS) */
+#define MSDOS_DIR_BITS	5 /* log2(sizeof(struct msdos_dir_entry)) */
+
+#define MSDOS_SUPER_MAGIC 0x4d44 /* MD */
+
+#define FAT_CACHE    8 /* FAT cache size */
+
+#define MSDOS_MAX_EXTRA	3 /* tolerate up to that number of clusters which are
+			     inaccessible because the FAT is too short */
+
+#define ATTR_RO      1  /* read-only */
+#define ATTR_HIDDEN  2  /* hidden */
+#define ATTR_SYS     4  /* system */
+#define ATTR_VOLUME  8  /* volume label */
+#define ATTR_DIR     16 /* directory */
+#define ATTR_ARCH    32 /* archived */
+
+#define ATTR_NONE    0 /* no attribute bits */
+#define ATTR_UNUSED  (ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN)
+	/* attribute bits that are copied "as is" */
+#define ATTR_EXT     (ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME)
+	/* bits that are used by the Windows 95/Windows NT extended FAT */
+
+#define ATTR_DIR_READ_BOTH 512 /* read both short and long names from the
+				* vfat filesystem.  This is used by Samba
+				* to export the vfat filesystem with correct
+				* shortnames. */
+#define ATTR_DIR_READ_SHORT 1024
+
+#define CASE_LOWER_BASE 8	/* base is lower case */
+#define CASE_LOWER_EXT  16	/* extension is lower case */
+
+#define SCAN_ANY     0  /* either hidden or not */
+#define SCAN_HID     1  /* only hidden */
+#define SCAN_NOTHID  2  /* only not hidden */
+#define SCAN_NOTANY  3  /* test name, then use SCAN_HID or SCAN_NOTHID */
+
+#define DELETED_FLAG 0xe5 /* marks file as deleted when in name[0] */
+#define IS_FREE(n) (!*(n) || *(const unsigned char *) (n) == DELETED_FLAG)
+
+#define MSDOS_VALID_MODE (S_IFREG | S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO)
+	/* valid file mode bits */
+
+#define MSDOS_SB(s) (&((s)->u.msdos_sb))
+#define MSDOS_I(i) (&((i)->u.msdos_i))
+
+#define MSDOS_NAME 11 /* maximum name length */
+#define MSDOS_LONGNAME 256 /* maximum name length */
+#define MSDOS_SLOTS 21  /* max # of slots needed for short and long names */
+#define MSDOS_DOT    ".          " /* ".", padded to MSDOS_NAME chars */
+#define MSDOS_DOTDOT "..         " /* "..", padded to MSDOS_NAME chars */
+
+#define MSDOS_FAT12 4084 /* maximum number of clusters in a 12 bit FAT */
+
+#define EOF_FAT12 0xFF8		/* standard EOF */
+#define EOF_FAT16 0xFFF8
+#define EOF_FAT32 0xFFFFFF8
+#define EOF_FAT(s) (MSDOS_SB(s)->fat_bits == 32 ? EOF_FAT32 : \
+	MSDOS_SB(s)->fat_bits == 16 ? EOF_FAT16 : EOF_FAT12)
+
+#define FAT_FSINFO_SIG1		0x41615252
+#define FAT_FSINFO_SIG2		0x61417272
+#define IS_FSINFO(x)		(CF_LE_L((x)->signature1) == FAT_FSINFO_SIG1	 \
+				 && CF_LE_L((x)->signature2) == FAT_FSINFO_SIG2)
+
+/*
+ * Inode flags
+ */
+#define FAT_BINARY_FL		0x00000001 /* File contains binary data */
+
+/*
+ * ioctl commands
+ */
+#define	VFAT_IOCTL_READDIR_BOTH		_IOR('r', 1, struct dirent [2])
+#define	VFAT_IOCTL_READDIR_SHORT	_IOR('r', 2, struct dirent [2])
+
+/* 
+ * vfat shortname flags
+ */
+#define VFAT_SFN_DISPLAY_LOWER	0x0001 /* convert to lowercase for display */
+#define VFAT_SFN_DISPLAY_WIN95	0x0002 /* emulate win95 rule for display */
+#define VFAT_SFN_DISPLAY_WINNT	0x0004 /* emulate winnt rule for display */
+#define VFAT_SFN_CREATE_WIN95	0x0100 /* emulate win95 rule for create */
+#define VFAT_SFN_CREATE_WINNT	0x0200 /* emulate winnt rule for create */
+
+/*
+ * Conversion from and to little-endian byte order. (no-op on i386/i486)
+ *
+ * Naming: Ca_b_c, where a: F = from, T = to, b: LE = little-endian,
+ * BE = big-endian, c: W = word (16 bits), L = longword (32 bits)
+ */
+
+#define CF_LE_W(v) le16_to_cpu(v)
+#define CF_LE_L(v) le32_to_cpu(v)
+#define CT_LE_W(v) cpu_to_le16(v)
+#define CT_LE_L(v) cpu_to_le32(v)
+
+struct fat_boot_sector {
+	__s8	ignored[3];	/* Boot strap short or near jump */
+	__s8	system_id[8];	/* Name - can be used to special case
+				   partition manager volumes */
+	__u8	sector_size[2];	/* bytes per logical sector */
+	__u8	cluster_size;	/* sectors/cluster */
+	__u16	reserved;	/* reserved sectors */
+	__u8	fats;		/* number of FATs */
+	__u8	dir_entries[2];	/* root directory entries */
+	__u8	sectors[2];	/* number of sectors */
+	__u8	media;		/* media code (unused) */
+	__u16	fat_length;	/* sectors/FAT */
+	__u16	secs_track;	/* sectors per track */
+	__u16	heads;		/* number of heads */
+	__u32	hidden;		/* hidden sectors (unused) */
+	__u32	total_sect;	/* number of sectors (if sectors == 0) */
+
+	/* The following fields are only used by FAT32 */
+	__u32	fat32_length;	/* sectors/FAT */
+	__u16	flags;		/* bit 8: fat mirroring, low 4: active fat */
+	__u8	version[2];	/* major, minor filesystem version */
+	__u32	root_cluster;	/* first cluster in root directory */
+	__u16	info_sector;	/* filesystem info sector */
+	__u16	backup_boot;	/* backup boot sector */
+	__u16	reserved2[6];	/* Unused */
+};
+
+struct fat_boot_fsinfo {
+	__u32   signature1;	/* 0x41615252L */
+	__u32   reserved1[120];	/* Nothing as far as I can tell */
+	__u32   signature2;	/* 0x61417272L */
+	__u32   free_clusters;	/* Free cluster count.  -1 if unknown */
+	__u32   next_cluster;	/* Most recently allocated cluster.
+				 * Unused under Linux. */
+	__u32   reserved2[4];
+};
+
+struct msdos_dir_entry {
+	__s8	name[8],ext[3];	/* name and extension */
+	__u8	attr;		/* attribute bits */
+	__u8    lcase;		/* Case for base and extension */
+	__u8	ctime_ms;	/* Creation time, milliseconds */
+	__u16	ctime;		/* Creation time */
+	__u16	cdate;		/* Creation date */
+	__u16	adate;		/* Last access date */
+	__u16   starthi;	/* High 16 bits of cluster in FAT32 */
+	__u16	time,date,start;/* time, date and first cluster */
+	__u32	size;		/* file size (in bytes) */
+};
+
+/* Up to 13 characters of the name */
+struct msdos_dir_slot {
+	__u8    id;		/* sequence number for slot */
+	__u8    name0_4[10];	/* first 5 characters in name */
+	__u8    attr;		/* attribute byte */
+	__u8    reserved;	/* always 0 */
+	__u8    alias_checksum;	/* checksum for 8.3 alias */
+	__u8    name5_10[12];	/* 6 more characters in name */
+	__u16   start;		/* starting cluster number, 0 in long slots */
+	__u8    name11_12[4];	/* last 2 characters in name */
+};
+
+struct vfat_slot_info {
+	int is_long;		       /* was the found entry long */
+	int long_slots;		       /* number of long slots in filename */
+	int total_slots;	       /* total slots (long and short) */
+	loff_t longname_offset;	       /* dir offset for longname start */
+	loff_t shortname_offset;       /* dir offset for shortname start */
+	int ino;		       /* ino for the file */
+};
+
+/* Determine whether this FS has kB-aligned data. */
+#define MSDOS_CAN_BMAP(mib) (!(((mib)->cluster_size & 1) || \
+    ((mib)->data_start & 1)))
+
+/* Convert attribute bits and a mask to the UNIX mode. */
+#define MSDOS_MKMODE(a,m) (m & (a & ATTR_RO ? S_IRUGO|S_IXUGO : S_IRWXUGO))
+
+/* Convert the UNIX mode to MS-DOS attribute bits. */
+#define MSDOS_MKATTR(m) ((m & S_IWUGO) ? ATTR_NONE : ATTR_RO)
+
+
+#ifdef __KERNEL__
+
+#include <linux/nls.h>
+
+struct fat_cache {
+	kdev_t device; /* device number. 0 means unused. */
+	int start_cluster; /* first cluster of the chain. */
+	int file_cluster; /* cluster number in the file. */
+	int disk_cluster; /* cluster number on disk. */
+	struct fat_cache *next; /* next cache entry */
+};
+
+static inline void fat16_towchar(wchar_t *dst, const __u8 *src, size_t len)
+{
+#ifdef __BIG_ENDIAN
+	while (len--) {
+		*dst++ = src[0] | (src[1] << 8);
+		src += 2;
+	}
+#else
+	memcpy(dst, src, len * 2);
+#endif
+}
+
+static inline void fatwchar_to16(__u8 *dst, const wchar_t *src, size_t len)
+{
+#ifdef __BIG_ENDIAN
+	while (len--) {
+		dst[0] = *src & 0x00FF;
+		dst[1] = (*src & 0xFF00) >> 8;
+		dst += 2;
+		src++;
+	}
+#else
+	memcpy(dst, src, len * 2);
+#endif
+}
+
+/* fat/buffer.c */
+extern struct buffer_head *fat_bread(struct super_block *sb, int block);
+extern struct buffer_head *fat_getblk(struct super_block *sb, int block);
+extern void fat_brelse(struct super_block *sb, struct buffer_head *bh);
+extern void fat_mark_buffer_dirty(struct super_block *sb, struct buffer_head *bh);
+extern void fat_set_uptodate(struct super_block *sb, struct buffer_head *bh,
+			     int val);
+extern int fat_is_uptodate(struct super_block *sb, struct buffer_head *bh);
+extern void fat_ll_rw_block(struct super_block *sb, int opr, int nbreq,
+			    struct buffer_head *bh[32]);
+
+/* fat/cache.c */
+extern int fat_access(struct super_block *sb, int nr, int new_value);
+extern int fat_bmap(struct inode *inode, int sector);
+extern void fat_cache_init(void);
+extern void fat_cache_lookup(struct inode *inode, int cluster, int *f_clu,
+			     int *d_clu);
+extern void fat_cache_add(struct inode *inode, int f_clu, int d_clu);
+extern void fat_cache_inval_inode(struct inode *inode);
+extern void fat_cache_inval_dev(kdev_t device);
+extern int fat_get_cluster(struct inode *inode, int cluster);
+extern int fat_free(struct inode *inode, int skip);
+
+/* fat/dir.c */
+extern struct file_operations fat_dir_operations;
+extern int fat_search_long(struct inode *inode, const char *name, int name_len,
+			   int anycase, loff_t *spos, loff_t *lpos);
+extern int fat_readdir(struct file *filp, void *dirent, filldir_t filldir);
+extern int fat_dir_ioctl(struct inode * inode, struct file * filp,
+			 unsigned int cmd, unsigned long arg);
+extern int fat_dir_empty(struct inode *dir);
+extern int fat_add_entries(struct inode *dir, int slots, struct buffer_head **bh,
+			   struct msdos_dir_entry **de, int *ino);
+extern int fat_new_dir(struct inode *dir, struct inode *parent, int is_vfat);
+
+/* fat/file.c */
+extern struct file_operations fat_file_operations;
+extern struct inode_operations fat_file_inode_operations;
+extern ssize_t fat_file_read(struct file *filp, char *buf, size_t count,
+			     loff_t *ppos);
+extern int fat_get_block(struct inode *inode, long iblock,
+			 struct buffer_head *bh_result, int create);
+extern ssize_t fat_file_write(struct file *filp, const char *buf, size_t count,
+			      loff_t *ppos);
+extern void fat_truncate(struct inode *inode);
+
+/* fat/inode.c */
+extern void fat_hash_init(void);
+extern void fat_attach(struct inode *inode, int i_pos);
+extern void fat_detach(struct inode *inode);
+extern struct inode *fat_iget(struct super_block *sb, int i_pos);
+extern struct inode *fat_build_inode(struct super_block *sb,
+				     struct msdos_dir_entry *de, int ino, int *res);
+extern void fat_delete_inode(struct inode *inode);
+extern void fat_clear_inode(struct inode *inode);
+extern void fat_put_super(struct super_block *sb);
+extern struct super_block *
+fat_read_super(struct super_block *sb, void *data, int silent,
+	       struct inode_operations *fs_dir_inode_ops);
+extern int fat_statfs(struct super_block *sb, struct statfs *buf);
+extern void fat_write_inode(struct inode *inode, int wait);
+extern int fat_notify_change(struct dentry * dentry, struct iattr * attr);
+
+/* fat/misc.c */
+extern void fat_fs_panic(struct super_block *s, const char *msg);
+extern int fat_is_binary(char conversion, char *extension);
+extern void lock_fat(struct super_block *sb);
+extern void unlock_fat(struct super_block *sb);
+extern void fat_clusters_flush(struct super_block *sb);
+extern int fat_add_cluster(struct inode *inode);
+extern struct buffer_head *fat_extend_dir(struct inode *inode);
+extern int date_dos2unix(unsigned short time, unsigned short date);
+extern void fat_date_unix2dos(int unix_date, unsigned short *time,
+			      unsigned short *date);
+extern int fat__get_entry(struct inode *dir, loff_t *pos, struct buffer_head **bh,
+			  struct msdos_dir_entry **de, int *ino);
+static __inline__ int fat_get_entry(struct inode *dir, loff_t *pos,
+				    struct buffer_head **bh,
+				    struct msdos_dir_entry **de, int *ino)
+{
+	/* Fast stuff first */
+	if (*bh && *de &&
+	    (*de - (struct msdos_dir_entry *)(*bh)->b_data) < MSDOS_SB(dir->i_sb)->dir_per_block - 1) {
+		*pos += sizeof(struct msdos_dir_entry);
+		(*de)++;
+		(*ino)++;
+		return 0;
+	}
+	return fat__get_entry(dir,pos,bh,de,ino);
+}
+extern int fat_subdirs(struct inode *dir);
+extern int fat_scan(struct inode *dir, const char *name,
+		    struct buffer_head **res_bh,
+		    struct msdos_dir_entry **res_de, int *ino);
+
+/* msdos/namei.c  - these are for Umsdos */
+extern void msdos_put_super(struct super_block *sb);
+extern struct dentry *msdos_lookup(struct inode *dir, struct dentry *);
+extern int msdos_create(struct inode *dir, struct dentry *dentry, int mode);
+extern int msdos_rmdir(struct inode *dir, struct dentry *dentry);
+extern int msdos_mkdir(struct inode *dir, struct dentry *dentry, int mode);
+extern int msdos_unlink(struct inode *dir, struct dentry *dentry);
+extern int msdos_rename(struct inode *old_dir, struct dentry *old_dentry,
+			struct inode *new_dir, struct dentry *new_dentry);
+extern struct super_block *msdos_read_super(struct super_block *sb,
+					    void *data, int silent);
+
+/* vfat/namei.c - these are for dmsdos */
+extern struct dentry *vfat_lookup(struct inode *dir, struct dentry *);
+extern int vfat_create(struct inode *dir, struct dentry *dentry, int mode);
+extern int vfat_rmdir(struct inode *dir, struct dentry *dentry);
+extern int vfat_unlink(struct inode *dir, struct dentry *dentry);
+extern int vfat_mkdir(struct inode *dir, struct dentry *dentry, int mode);
+extern int vfat_rename(struct inode *old_dir, struct dentry *old_dentry,
+		       struct inode *new_dir, struct dentry *new_dentry);
+extern struct super_block *vfat_read_super(struct super_block *sb, void *data,
+					   int silent);
+
+/* vfat/vfatfs_syms.c */
+extern struct file_system_type vfat_fs_type;
+
+#endif /* __KERNEL__ */
+
+#endif