diff options
Diffstat (limited to 'fs/isofs')
| -rw-r--r-- | fs/isofs/compress.c | 21 | ||||
| -rw-r--r-- | fs/isofs/dir.c | 13 | ||||
| -rw-r--r-- | fs/isofs/export.c | 6 | ||||
| -rw-r--r-- | fs/isofs/inode.c | 19 | ||||
| -rw-r--r-- | fs/isofs/isofs.h | 190 | ||||
| -rw-r--r-- | fs/isofs/joliet.c | 6 | ||||
| -rw-r--r-- | fs/isofs/namei.c | 13 | ||||
| -rw-r--r-- | fs/isofs/rock.c | 8 | ||||
| -rw-r--r-- | fs/isofs/util.c | 5 |
9 files changed, 203 insertions, 78 deletions
diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c index fb42c3f3bf0d..34a44e451689 100644 --- a/fs/isofs/compress.c +++ b/fs/isofs/compress.c @@ -18,29 +18,12 @@ #include <linux/config.h> #include <linux/module.h> - -#include <linux/stat.h> -#include <linux/time.h> -#include <linux/iso_fs.h> -#include <linux/kernel.h> -#include <linux/major.h> -#include <linux/mm.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <linux/errno.h> #include <linux/init.h> -#include <linux/nls.h> -#include <linux/ctype.h> -#include <linux/smp_lock.h> -#include <linux/blkdev.h> + #include <linux/vmalloc.h> #include <linux/zlib.h> -#include <linux/buffer_head.h> - -#include <asm/system.h> -#include <asm/uaccess.h> -#include <asm/semaphore.h> +#include "isofs.h" #include "zisofs.h" /* This should probably be global. */ diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c index 14d86de6637d..6030956b894b 100644 --- a/fs/isofs/dir.c +++ b/fs/isofs/dir.c @@ -10,20 +10,9 @@ * * isofs directory handling functions */ -#include <linux/errno.h> -#include <linux/fs.h> -#include <linux/iso_fs.h> -#include <linux/kernel.h> -#include <linux/stat.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/time.h> #include <linux/config.h> #include <linux/smp_lock.h> -#include <linux/buffer_head.h> - -#include <asm/uaccess.h> +#include "isofs.h" static int isofs_readdir(struct file *, void *, filldir_t); diff --git a/fs/isofs/export.c b/fs/isofs/export.c index e4252c960871..4af856a7fda7 100644 --- a/fs/isofs/export.c +++ b/fs/isofs/export.c @@ -13,11 +13,7 @@ * fs/exportfs/expfs.c. */ -#include <linux/buffer_head.h> -#include <linux/errno.h> -#include <linux/fs.h> -#include <linux/iso_fs.h> -#include <linux/kernel.h> +#include "isofs.h" static struct dentry * isofs_export_iget(struct super_block *sb, diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index b9256e65e144..abd7b12eeca7 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -12,29 +12,18 @@ */ #include <linux/config.h> +#include <linux/init.h> #include <linux/module.h> -#include <linux/stat.h> -#include <linux/time.h> -#include <linux/iso_fs.h> -#include <linux/kernel.h> -#include <linux/major.h> -#include <linux/mm.h> -#include <linux/string.h> #include <linux/slab.h> -#include <linux/errno.h> -#include <linux/cdrom.h> -#include <linux/init.h> #include <linux/nls.h> #include <linux/ctype.h> #include <linux/smp_lock.h> -#include <linux/blkdev.h> -#include <linux/buffer_head.h> -#include <linux/vfs.h> +#include <linux/statfs.h> +#include <linux/cdrom.h> #include <linux/parser.h> -#include <asm/system.h> -#include <asm/uaccess.h> +#include "isofs.h" #include "zisofs.h" #define BEQUIET diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h new file mode 100644 index 000000000000..9ce7b51fb614 --- /dev/null +++ b/fs/isofs/isofs.h @@ -0,0 +1,190 @@ +#include <linux/fs.h> +#include <linux/buffer_head.h> +#include <linux/iso_fs.h> +#include <asm/unaligned.h> + +enum isofs_file_format { + isofs_file_normal = 0, + isofs_file_sparse = 1, + isofs_file_compressed = 2, +}; + +/* + * iso fs inode data in memory + */ +struct iso_inode_info { + unsigned long i_iget5_block; + unsigned long i_iget5_offset; + unsigned int i_first_extent; + unsigned char i_file_format; + unsigned char i_format_parm[3]; + unsigned long i_next_section_block; + unsigned long i_next_section_offset; + off_t i_section_size; + struct inode vfs_inode; +}; + +/* + * iso9660 super-block data in memory + */ +struct isofs_sb_info { + unsigned long s_ninodes; + unsigned long s_nzones; + unsigned long s_firstdatazone; + unsigned long s_log_zone_size; + unsigned long s_max_size; + + unsigned char s_high_sierra; /* A simple flag */ + unsigned char s_mapping; + int s_rock_offset; /* offset of SUSP fields within SU area */ + unsigned char s_rock; + unsigned char s_joliet_level; + unsigned char s_utf8; + unsigned char s_cruft; /* Broken disks with high + byte of length containing + junk */ + unsigned char s_unhide; + unsigned char s_nosuid; + unsigned char s_nodev; + unsigned char s_nocompress; + + mode_t s_mode; + gid_t s_gid; + uid_t s_uid; + struct nls_table *s_nls_iocharset; /* Native language support table */ +}; + +static inline struct isofs_sb_info *ISOFS_SB(struct super_block *sb) +{ + return sb->s_fs_info; +} + +static inline struct iso_inode_info *ISOFS_I(struct inode *inode) +{ + return container_of(inode, struct iso_inode_info, vfs_inode); +} + +static inline int isonum_711(char *p) +{ + return *(u8 *)p; +} +static inline int isonum_712(char *p) +{ + return *(s8 *)p; +} +static inline unsigned int isonum_721(char *p) +{ + return le16_to_cpu(get_unaligned((__le16 *)p)); +} +static inline unsigned int isonum_722(char *p) +{ + return be16_to_cpu(get_unaligned((__le16 *)p)); +} +static inline unsigned int isonum_723(char *p) +{ + /* Ignore bigendian datum due to broken mastering programs */ + return le16_to_cpu(get_unaligned((__le16 *)p)); +} +static inline unsigned int isonum_731(char *p) +{ + return le32_to_cpu(get_unaligned((__le32 *)p)); +} +static inline unsigned int isonum_732(char *p) +{ + return be32_to_cpu(get_unaligned((__le32 *)p)); +} +static inline unsigned int isonum_733(char *p) +{ + /* Ignore bigendian datum due to broken mastering programs */ + return le32_to_cpu(get_unaligned((__le32 *)p)); +} +extern int iso_date(char *, int); + +struct inode; /* To make gcc happy */ + +extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *); +extern int get_rock_ridge_filename(struct iso_directory_record *, char *, struct inode *); +extern int isofs_name_translate(struct iso_directory_record *, char *, struct inode *); + +int get_joliet_filename(struct iso_directory_record *, unsigned char *, struct inode *); +int get_acorn_filename(struct iso_directory_record *, char *, struct inode *); + +extern struct dentry *isofs_lookup(struct inode *, struct dentry *, struct nameidata *); +extern struct buffer_head *isofs_bread(struct inode *, sector_t); +extern int isofs_get_blocks(struct inode *, sector_t, struct buffer_head **, unsigned long); + +extern struct inode *isofs_iget(struct super_block *sb, + unsigned long block, + unsigned long offset); + +/* Because the inode number is no longer relevant to finding the + * underlying meta-data for an inode, we are free to choose a more + * convenient 32-bit number as the inode number. The inode numbering + * scheme was recommended by Sergey Vlasov and Eric Lammerts. */ +static inline unsigned long isofs_get_ino(unsigned long block, + unsigned long offset, + unsigned long bufbits) +{ + return (block << (bufbits - 5)) | (offset >> 5); +} + +/* Every directory can have many redundant directory entries scattered + * throughout the directory tree. First there is the directory entry + * with the name of the directory stored in the parent directory. + * Then, there is the "." directory entry stored in the directory + * itself. Finally, there are possibly many ".." directory entries + * stored in all the subdirectories. + * + * In order for the NFS get_parent() method to work and for the + * general consistency of the dcache, we need to make sure the + * "i_iget5_block" and "i_iget5_offset" all point to exactly one of + * the many redundant entries for each directory. We normalize the + * block and offset by always making them point to the "." directory. + * + * Notice that we do not use the entry for the directory with the name + * that is located in the parent directory. Even though choosing this + * first directory is more natural, it is much easier to find the "." + * entry in the NFS get_parent() method because it is implicitly + * encoded in the "extent + ext_attr_length" fields of _all_ the + * redundant entries for the directory. Thus, it can always be + * reached regardless of which directory entry you have in hand. + * + * This works because the "." entry is simply the first directory + * record when you start reading the file that holds all the directory + * records, and this file starts at "extent + ext_attr_length" blocks. + * Because the "." entry is always the first entry listed in the + * directories file, the normalized "offset" value is always 0. + * + * You should pass the directory entry in "de". On return, "block" + * and "offset" will hold normalized values. Only directories are + * affected making it safe to call even for non-directory file + * types. */ +static inline void +isofs_normalize_block_and_offset(struct iso_directory_record* de, + unsigned long *block, + unsigned long *offset) +{ + /* Only directories are normalized. */ + if (de->flags[0] & 2) { + *offset = 0; + *block = (unsigned long)isonum_733(de->extent) + + (unsigned long)isonum_711(de->ext_attr_length); + } +} + +extern struct inode_operations isofs_dir_inode_operations; +extern struct file_operations isofs_dir_operations; +extern struct address_space_operations isofs_symlink_aops; +extern struct export_operations isofs_export_ops; + +/* The following macros are used to check for memory leaks. */ +#ifdef LEAK_CHECK +#define free_s leak_check_free_s +#define malloc leak_check_malloc +#define sb_bread leak_check_bread +#define brelse leak_check_brelse +extern void * leak_check_malloc(unsigned int size); +extern void leak_check_free_s(void * obj, int size); +extern struct buffer_head * leak_check_bread(struct super_block *sb, int block); +extern void leak_check_brelse(struct buffer_head * bh); +#endif /* LEAK_CHECK */ diff --git a/fs/isofs/joliet.c b/fs/isofs/joliet.c index 86c50e22fc87..2931de7f1a6a 100644 --- a/fs/isofs/joliet.c +++ b/fs/isofs/joliet.c @@ -6,11 +6,9 @@ * Joliet: Microsoft's Unicode extensions to iso9660 */ -#include <linux/string.h> +#include <linux/types.h> #include <linux/nls.h> -#include <linux/mm.h> -#include <linux/iso_fs.h> -#include <asm/unaligned.h> +#include "isofs.h" /* * Convert Unicode 16 to UTF8 or ASCII. diff --git a/fs/isofs/namei.c b/fs/isofs/namei.c index 9569fc44102d..690edf37173c 100644 --- a/fs/isofs/namei.c +++ b/fs/isofs/namei.c @@ -6,20 +6,9 @@ * (C) 1991 Linus Torvalds - minix filesystem */ -#include <linux/time.h> -#include <linux/iso_fs.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/stat.h> -#include <linux/fcntl.h> -#include <linux/mm.h> -#include <linux/errno.h> #include <linux/config.h> /* Joliet? */ #include <linux/smp_lock.h> -#include <linux/buffer_head.h> -#include <linux/dcache.h> - -#include <asm/uaccess.h> +#include "isofs.h" /* * ok, we cannot use strncmp, as the name is not in our data space. diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c index 8bdd3e409543..089e79c65585 100644 --- a/fs/isofs/rock.c +++ b/fs/isofs/rock.c @@ -6,17 +6,11 @@ * Rock Ridge Extensions to iso9660 */ -#include <linux/stat.h> -#include <linux/time.h> -#include <linux/iso_fs.h> -#include <linux/string.h> -#include <linux/mm.h> #include <linux/slab.h> #include <linux/pagemap.h> #include <linux/smp_lock.h> -#include <linux/buffer_head.h> -#include <asm/page.h> +#include "isofs.h" #include "rock.h" /* These functions are designed to read the system areas of a directory record diff --git a/fs/isofs/util.c b/fs/isofs/util.c index 3f6d9c1ac95a..01e1ee7a998b 100644 --- a/fs/isofs/util.c +++ b/fs/isofs/util.c @@ -2,9 +2,7 @@ * linux/fs/isofs/util.c */ -#include <linux/time.h> -#include <linux/fs.h> -#include <linux/iso_fs.h> +#include "isofs.h" /* * We have to convert from a MM/DD/YY format to the Unix ctime format. @@ -80,4 +78,3 @@ int iso_date(char * p, int flag) } return crtime; } - |