* 2004 Paul Serice - NFS Export Operations
*/
-#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
-#ifdef LEAK_CHECK
-static int check_malloc;
-static int check_bread;
-#endif
-
static int isofs_hashi(struct dentry *parent, struct qstr *qstr);
static int isofs_hash(struct dentry *parent, struct qstr *qstr);
static int isofs_dentry_cmpi(struct dentry *dentry, struct qstr *a, struct qstr *b);
}
#endif
-#ifdef LEAK_CHECK
- printk("Outstanding mallocs:%d, outstanding buffers: %d\n",
- check_malloc, check_bread);
-#endif
-
kfree(sbi);
sb->s_fs_info = NULL;
return;
}
static void isofs_read_inode(struct inode *);
-static int isofs_statfs (struct super_block *, struct kstatfs *);
+static int isofs_statfs (struct dentry *, struct kstatfs *);
-static kmem_cache_t *isofs_inode_cachep;
+static struct kmem_cache *isofs_inode_cachep;
static struct inode *isofs_alloc_inode(struct super_block *sb)
{
struct iso_inode_info *ei;
- ei = (struct iso_inode_info *)kmem_cache_alloc(isofs_inode_cachep, SLAB_KERNEL);
+ ei = kmem_cache_alloc(isofs_inode_cachep, GFP_KERNEL);
if (!ei)
return NULL;
return &ei->vfs_inode;
kmem_cache_free(isofs_inode_cachep, ISOFS_I(inode));
}
-static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+static void init_once(void *foo, struct kmem_cache * cachep, unsigned long flags)
{
- struct iso_inode_info *ei = (struct iso_inode_info *) foo;
+ struct iso_inode_info *ei = foo;
if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
SLAB_CTOR_CONSTRUCTOR)
{
isofs_inode_cachep = kmem_cache_create("isofs_inode_cache",
sizeof(struct iso_inode_info),
- 0, SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
+ 0, (SLAB_RECLAIM_ACCOUNT|
+ SLAB_MEM_SPREAD),
init_once, NULL);
if (isofs_inode_cachep == NULL)
return -ENOMEM;
static void destroy_inodecache(void)
{
- if (kmem_cache_destroy(isofs_inode_cachep))
- printk(KERN_INFO "iso_inode_cache: not all structures were freed\n");
+ kmem_cache_destroy(isofs_inode_cachep);
}
static int isofs_remount(struct super_block *sb, int *flags, char *data)
{
.d_hash = isofs_hashi_ms,
.d_compare = isofs_dentry_cmpi_ms,
- }
+ },
#endif
};
char rock;
char joliet;
char cruft;
- char unhide;
+ char hide;
+ char showassoc;
char nocompress;
unsigned char check;
unsigned int blocksize;
/*
* Case insensitive compare of two isofs names.
*/
-static int
-isofs_dentry_cmpi_common(struct dentry *dentry,struct qstr *a,struct qstr *b,int ms)
+static int isofs_dentry_cmpi_common(struct dentry *dentry, struct qstr *a,
+ struct qstr *b, int ms)
{
int alen, blen;
/*
* Case sensitive compare of two isofs names.
*/
-static int
-isofs_dentry_cmp_common(struct dentry *dentry,struct qstr *a,struct qstr *b,int ms)
+static int isofs_dentry_cmp_common(struct dentry *dentry, struct qstr *a,
+ struct qstr *b, int ms)
{
int alen, blen;
Opt_block, Opt_check_r, Opt_check_s, Opt_cruft, Opt_gid, Opt_ignore,
Opt_iocharset, Opt_map_a, Opt_map_n, Opt_map_o, Opt_mode, Opt_nojoliet,
Opt_norock, Opt_sb, Opt_session, Opt_uid, Opt_unhide, Opt_utf8, Opt_err,
- Opt_nocompress,
+ Opt_nocompress, Opt_hide, Opt_showassoc,
};
static match_table_t tokens = {
{Opt_norock, "norock"},
{Opt_nojoliet, "nojoliet"},
{Opt_unhide, "unhide"},
+ {Opt_hide, "hide"},
+ {Opt_showassoc, "showassoc"},
{Opt_cruft, "cruft"},
{Opt_utf8, "utf8"},
{Opt_iocharset, "iocharset=%s"},
{Opt_err, NULL}
};
-static int parse_options(char *options, struct iso9660_options * popt)
+static int parse_options(char *options, struct iso9660_options *popt)
{
char *p;
int option;
popt->rock = 'y';
popt->joliet = 'y';
popt->cruft = 'n';
- popt->unhide = 'n';
+ popt->hide = 'n';
+ popt->showassoc = 'n';
popt->check = 'u'; /* unset */
popt->nocompress = 0;
popt->blocksize = 1024;
case Opt_nojoliet:
popt->joliet = 'n';
break;
+ case Opt_hide:
+ popt->hide = 'y';
+ break;
case Opt_unhide:
- popt->unhide = 'y';
+ case Opt_showassoc:
+ popt->showassoc = 'y';
break;
case Opt_cruft:
popt->cruft = 'y';
*/
#define WE_OBEY_THE_WRITTEN_STANDARDS 1
-static unsigned int isofs_get_last_session(struct super_block *sb,s32 session )
+static unsigned int isofs_get_last_session(struct super_block *sb, s32 session)
{
struct cdrom_multisession ms_info;
unsigned int vol_desc_start;
printk(KERN_ERR "Invalid session number or type of track\n");
}
i = ioctl_by_bdev(bdev, CDROMMULTISESSION, (unsigned long) &ms_info);
- if(session > 0) printk(KERN_ERR "Invalid session number\n");
+ if (session > 0)
+ printk(KERN_ERR "Invalid session number\n");
#if 0
printk("isofs.inode: CDROMMULTISESSION: rc=%d\n",i);
if (i==0) {
struct iso9660_options opt;
struct isofs_sb_info * sbi;
- sbi = kmalloc(sizeof(struct isofs_sb_info), GFP_KERNEL);
+ sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
s->s_fs_info = sbi;
- memset(sbi, 0, sizeof(struct isofs_sb_info));
- if (!parse_options((char *) data, &opt))
+ if (!parse_options((char *)data, &opt))
goto out_freesbi;
/*
sbi->s_log_zone_size = isonum_723 (h_pri->logical_block_size);
sbi->s_max_size = isonum_733(h_pri->volume_space_size);
} else {
+ if (!pri)
+ goto out_freebh;
rootp = (struct iso_directory_record *) pri->root_directory_record;
sbi->s_nzones = isonum_733 (pri->volume_space_size);
sbi->s_log_zone_size = isonum_723 (pri->logical_block_size);
}
s->s_magic = ISOFS_SUPER_MAGIC;
+ s->s_maxbytes = 0xffffffff; /* We can handle files up to 4 GB */
/* The CDROM is read-only, has no nodes (devices) on it, and since
all of the files appear to be owned by root, we really do not want
sbi->s_rock = (opt.rock == 'y' ? 2 : 0);
sbi->s_rock_offset = -1; /* initial offset, will guess until SP is found*/
sbi->s_cruft = opt.cruft;
- sbi->s_unhide = opt.unhide;
+ sbi->s_hide = opt.hide;
+ sbi->s_showassoc = opt.showassoc;
sbi->s_uid = opt.uid;
sbi->s_gid = opt.gid;
sbi->s_utf8 = opt.utf8;
if (opt.check == 'r') table++;
s->s_root->d_op = &isofs_dentry_ops[table];
- if (opt.iocharset)
- kfree(opt.iocharset);
+ kfree(opt.iocharset);
return 0;
out_freebh:
brelse(bh);
out_freesbi:
- if (opt.iocharset)
- kfree(opt.iocharset);
+ kfree(opt.iocharset);
kfree(sbi);
s->s_fs_info = NULL;
return -EINVAL;
}
-static int isofs_statfs (struct super_block *sb, struct kstatfs *buf)
+static int isofs_statfs (struct dentry *dentry, struct kstatfs *buf)
{
+ struct super_block *sb = dentry->d_sb;
+
buf->f_type = ISOFS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = (ISOFS_SB(sb)->s_nzones
goto abort;
}
- if (nextblk) {
- while (b_off >= (offset + sect_size)) {
- struct inode *ninode;
-
- offset += sect_size;
- if (nextblk == 0)
- goto abort;
- ninode = isofs_iget(inode->i_sb, nextblk, nextoff);
- if (!ninode)
- goto abort;
- firstext = ISOFS_I(ninode)->i_first_extent;
- sect_size = ISOFS_I(ninode)->i_section_size >> ISOFS_BUFFER_BITS(ninode);
- nextblk = ISOFS_I(ninode)->i_next_section_block;
- nextoff = ISOFS_I(ninode)->i_next_section_offset;
- iput(ninode);
-
- if (++section > 100) {
- printk("isofs_get_blocks: More than 100 file sections ?!?, aborting...\n");
- printk("isofs_get_blocks: block=%ld firstext=%u sect_size=%u "
- "nextblk=%lu nextoff=%lu\n",
- iblock, firstext, (unsigned) sect_size,
- nextblk, nextoff);
- goto abort;
- }
+ /* On the last section, nextblk == 0, section size is likely to
+ * exceed sect_size by a partial block, and access beyond the
+ * end of the file will reach beyond the section size, too.
+ */
+ while (nextblk && (b_off >= (offset + sect_size))) {
+ struct inode *ninode;
+
+ offset += sect_size;
+ ninode = isofs_iget(inode->i_sb, nextblk, nextoff);
+ if (!ninode)
+ goto abort;
+ firstext = ISOFS_I(ninode)->i_first_extent;
+ sect_size = ISOFS_I(ninode)->i_section_size >> ISOFS_BUFFER_BITS(ninode);
+ nextblk = ISOFS_I(ninode)->i_next_section_block;
+ nextoff = ISOFS_I(ninode)->i_next_section_offset;
+ iput(ninode);
+
+ if (++section > 100) {
+ printk("isofs_get_blocks: More than 100 file sections ?!?, aborting...\n");
+ printk("isofs_get_blocks: block=%ld firstext=%u sect_size=%u "
+ "nextblk=%lu nextoff=%lu\n",
+ iblock, firstext, (unsigned) sect_size,
+ nextblk, nextoff);
+ goto abort;
}
}
rv++;
}
-
abort:
unlock_kernel();
return rv;
static int isofs_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
- if ( create ) {
+ if (create) {
printk("isofs_get_block: Kernel tries to allocate a block\n");
return -EROFS;
}
return generic_block_bmap(mapping,block,isofs_get_block);
}
-static struct address_space_operations isofs_aops = {
+static const struct address_space_operations isofs_aops = {
.readpage = isofs_readpage,
.sync_page = block_sync_page,
.bmap = _isofs_bmap
static inline void test_and_set_uid(uid_t *p, uid_t value)
{
- if(value) {
+ if (value)
*p = value;
- }
}
static inline void test_and_set_gid(gid_t *p, gid_t value)
{
- if(value) {
+ if (value)
*p = value;
- }
}
-static int isofs_read_level3_size(struct inode * inode)
+static int isofs_read_level3_size(struct inode *inode)
{
unsigned long bufsize = ISOFS_BUFFER_SIZE(inode);
int high_sierra = ISOFS_SB(inode->i_sb)->s_high_sierra;
bh = sb_bread(inode->i_sb, block);
if (!bh)
goto out_noread;
- memcpy((void *) tmpde + slop, bh->b_data, offset);
+ memcpy((void *)tmpde+slop, bh->b_data, offset);
}
de = tmpde;
}
more_entries = de->flags[-high_sierra] & 0x80;
i++;
- if(i > 100)
+ if (i > 100)
goto out_toomany;
- } while(more_entries);
+ } while (more_entries);
out:
- if (tmpde)
- kfree(tmpde);
+ kfree(tmpde);
if (bh)
brelse(bh);
return 0;
out_noread:
printk(KERN_INFO "ISOFS: unable to read i-node block %lu\n", block);
- if (tmpde)
- kfree(tmpde);
+ kfree(tmpde);
return -EIO;
out_toomany:
goto out;
}
-static void isofs_read_inode(struct inode * inode)
+static void isofs_read_inode(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
struct isofs_sb_info *sbi = ISOFS_SB(sb);
}
inode->i_uid = sbi->s_uid;
inode->i_gid = sbi->s_gid;
- inode->i_blocks = inode->i_blksize = 0;
+ inode->i_blocks = 0;
ei->i_format_parm[0] = 0;
ei->i_format_parm[1] = 0;
ei->i_format_parm[2] = 0;
ei->i_section_size = isonum_733 (de->size);
- if(de->flags[-high_sierra] & 0x80) {
+ if (de->flags[-high_sierra] & 0x80) {
if(isofs_read_level3_size(inode)) goto fail;
} else {
ei->i_next_section_block = 0;
isonum_711 (de->ext_attr_length));
/* Set the number of blocks for stat() - should be done before RR */
- inode->i_blksize = PAGE_CACHE_SIZE; /* For stat() only */
inode->i_blocks = (inode->i_size + 511) >> 9;
/*
/* XXX - parse_rock_ridge_inode() had already set i_rdev. */
init_special_inode(inode, inode->i_mode, inode->i_rdev);
- out:
- if (tmpde)
- kfree(tmpde);
+out:
+ kfree(tmpde);
if (bh)
brelse(bh);
return;
- out_badread:
+out_badread:
printk(KERN_WARNING "ISOFS: unable to read i-node block\n");
- fail:
+fail:
make_bad_inode(inode);
goto out;
}
struct inode *inode;
struct isofs_iget5_callback_data data;
+ if (offset >= 1ul << sb->s_blocksize_bits)
+ return NULL;
+
data.block = block;
data.offset = offset;
hashval = (block << sb->s_blocksize_bits) | offset;
- inode = iget5_locked(sb,
- hashval,
- &isofs_iget5_test,
- &isofs_iget5_set,
- &data);
+ inode = iget5_locked(sb, hashval, &isofs_iget5_test,
+ &isofs_iget5_set, &data);
if (inode && (inode->i_state & I_NEW)) {
sb->s_op->read_inode(inode);
return inode;
}
-#ifdef LEAK_CHECK
-#undef malloc
-#undef free_s
-#undef sb_bread
-#undef brelse
-
-void * leak_check_malloc(unsigned int size){
- void * tmp;
- check_malloc++;
- tmp = kmalloc(size, GFP_KERNEL);
- return tmp;
-}
-
-void leak_check_free_s(void * obj, int size){
- check_malloc--;
- return kfree(obj);
-}
-
-struct buffer_head * leak_check_bread(struct super_block *sb, int block){
- check_bread++;
- return sb_bread(sb, block);
-}
-
-void leak_check_brelse(struct buffer_head * bh){
- check_bread--;
- return brelse(bh);
-}
-
-#endif
-
-static struct super_block *isofs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
+static int isofs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, isofs_fill_super);
+ return get_sb_bdev(fs_type, flags, dev_name, data, isofs_fill_super,
+ mnt);
}
static struct file_system_type iso9660_fs_type = {
git://git.onelab.eu / linux-2.6.git / blobdiff