*
* (C) 1991 Linus Torvalds - minix filesystem
* 1992, 1993, 1994 Eric Youngdale Modified for ISO 9660 filesystem.
- * 1994 Eberhard Moenkeberg - multi session handling.
+ * 1994 Eberhard Mรถnkeberg - multi session handling.
* 1995 Mark Dobie - allow mounting of some weird VideoCDs and PhotoCDs.
* 1997 Gordon Chaffee - Joliet CDs
* 1998 Eric Lammerts - ISO 9660 Level 3
* 2004 Paul Serice - NFS Export Operations
*/
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
static void isofs_put_super(struct super_block *sb)
{
struct isofs_sb_info *sbi = ISOFS_SB(sb);
+
#ifdef CONFIG_JOLIET
- if (sbi->s_nls_iocharset) {
- unload_nls(sbi->s_nls_iocharset);
- sbi->s_nls_iocharset = NULL;
- }
+ lock_kernel();
+
+ unload_nls(sbi->s_nls_iocharset);
+
+ unlock_kernel();
#endif
kfree(sbi);
return;
}
-static void isofs_read_inode(struct inode *);
+static int isofs_read_inode(struct inode *);
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 = 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 iso_inode_info *ei = foo;
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR)
- inode_init_once(&ei->vfs_inode);
+ inode_init_once(&ei->vfs_inode);
}
-
+
static int init_inodecache(void)
{
isofs_inode_cachep = kmem_cache_create("isofs_inode_cache",
- sizeof(struct iso_inode_info),
- 0, (SLAB_RECLAIM_ACCOUNT|
- SLAB_MEM_SPREAD),
- init_once, NULL);
+ sizeof(struct iso_inode_info),
+ 0, (SLAB_RECLAIM_ACCOUNT|
+ SLAB_MEM_SPREAD),
+ init_once);
if (isofs_inode_cachep == NULL)
return -ENOMEM;
return 0;
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)
return 0;
}
-static struct super_operations isofs_sops = {
+static const struct super_operations isofs_sops = {
.alloc_inode = isofs_alloc_inode,
.destroy_inode = isofs_destroy_inode,
- .read_inode = isofs_read_inode,
.put_super = isofs_put_super,
.statfs = isofs_statfs,
.remount_fs = isofs_remount,
+ .show_options = generic_show_options,
};
-static struct dentry_operations isofs_dentry_ops[] = {
+static const struct dentry_operations isofs_dentry_ops[] = {
{
.d_hash = isofs_hash,
.d_compare = isofs_dentry_cmp,
};
struct iso9660_options{
- char map;
- char rock;
- char joliet;
- char cruft;
- char hide;
- char showassoc;
- char nocompress;
+ unsigned int rock:1;
+ unsigned int joliet:1;
+ unsigned int cruft:1;
+ unsigned int hide:1;
+ unsigned int showassoc:1;
+ unsigned int nocompress:1;
+ unsigned int overriderockperm:1;
+ unsigned int uid_set:1;
+ unsigned int gid_set:1;
+ unsigned int utf8:1;
+ unsigned char map;
unsigned char check;
unsigned int blocksize;
- mode_t mode;
+ mode_t fmode;
+ mode_t dmode;
gid_t gid;
uid_t uid;
char *iocharset;
- unsigned char utf8;
- /* LVE */
- s32 session;
- s32 sbsector;
+ /* LVE */
+ s32 session;
+ s32 sbsector;
};
/*
hash = init_name_hash();
while (len--) {
c = tolower(*name++);
- hash = partial_name_hash(tolower(c), hash);
+ hash = partial_name_hash(c, hash);
}
qstr->hash = end_name_hash(hash);
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_hide, Opt_showassoc,
+ Opt_nocompress, Opt_hide, Opt_showassoc, Opt_dmode, Opt_overriderockperm,
};
-static match_table_t tokens = {
+static const match_table_t tokens = {
{Opt_norock, "norock"},
{Opt_nojoliet, "nojoliet"},
{Opt_unhide, "unhide"},
{Opt_uid, "uid=%u"},
{Opt_gid, "gid=%u"},
{Opt_mode, "mode=%u"},
+ {Opt_dmode, "dmode=%u"},
+ {Opt_overriderockperm, "overriderockperm"},
{Opt_block, "block=%u"},
{Opt_ignore, "conv=binary"},
{Opt_ignore, "conv=b"},
int option;
popt->map = 'n';
- popt->rock = 'y';
- popt->joliet = 'y';
- popt->cruft = 'n';
- popt->hide = 'n';
- popt->showassoc = 'n';
+ popt->rock = 1;
+ popt->joliet = 1;
+ popt->cruft = 0;
+ popt->hide = 0;
+ popt->showassoc = 0;
popt->check = 'u'; /* unset */
popt->nocompress = 0;
popt->blocksize = 1024;
- popt->mode = S_IRUGO | S_IXUGO; /* r-x for all. The disc could
- be shared with DOS machines so
- virtually anything could be
- a valid executable. */
+ popt->fmode = popt->dmode = ISOFS_INVALID_MODE;
+ popt->uid_set = 0;
+ popt->gid_set = 0;
popt->gid = 0;
popt->uid = 0;
popt->iocharset = NULL;
popt->utf8 = 0;
+ popt->overriderockperm = 0;
popt->session=-1;
popt->sbsector=-1;
if (!options)
token = match_token(p, tokens, args);
switch (token) {
case Opt_norock:
- popt->rock = 'n';
+ popt->rock = 0;
break;
case Opt_nojoliet:
- popt->joliet = 'n';
+ popt->joliet = 0;
break;
case Opt_hide:
- popt->hide = 'y';
+ popt->hide = 1;
break;
case Opt_unhide:
case Opt_showassoc:
- popt->showassoc = 'y';
+ popt->showassoc = 1;
break;
case Opt_cruft:
- popt->cruft = 'y';
+ popt->cruft = 1;
break;
case Opt_utf8:
popt->utf8 = 1;
if (match_int(&args[0], &option))
return 0;
popt->uid = option;
+ popt->uid_set = 1;
break;
case Opt_gid:
if (match_int(&args[0], &option))
return 0;
popt->gid = option;
+ popt->gid_set = 1;
break;
case Opt_mode:
if (match_int(&args[0], &option))
return 0;
- popt->mode = option;
+ popt->fmode = option;
+ break;
+ case Opt_dmode:
+ if (match_int(&args[0], &option))
+ return 0;
+ popt->dmode = option;
+ break;
+ case Opt_overriderockperm:
+ popt->overriderockperm = 1;
break;
case Opt_block:
if (match_int(&args[0], &option))
Te.cdte_format=CDROM_LBA;
i = ioctl_by_bdev(bdev, CDROMREADTOCENTRY, (unsigned long) &Te);
if (!i) {
- printk(KERN_DEBUG "Session %d start %d type %d\n",
- session, Te.cdte_addr.lba,
- Te.cdte_ctrl&CDROM_DATA_TRACK);
+ printk(KERN_DEBUG "ISOFS: Session %d start %d type %d\n",
+ session, Te.cdte_addr.lba,
+ Te.cdte_ctrl&CDROM_DATA_TRACK);
if ((Te.cdte_ctrl&CDROM_DATA_TRACK) == 4)
return Te.cdte_addr.lba;
}
-
- printk(KERN_ERR "Invalid session number or type of track\n");
+
+ printk(KERN_ERR "ISOFS: 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");
+ printk(KERN_ERR "ISOFS: Invalid session number\n");
#if 0
- printk("isofs.inode: CDROMMULTISESSION: rc=%d\n",i);
+ printk(KERN_DEBUG "isofs.inode: CDROMMULTISESSION: rc=%d\n",i);
if (i==0) {
- printk("isofs.inode: XA disk: %s\n",ms_info.xa_flag?"yes":"no");
- printk("isofs.inode: vol_desc_start = %d\n", ms_info.addr.lba);
+ printk(KERN_DEBUG "isofs.inode: XA disk: %s\n",ms_info.xa_flag?"yes":"no");
+ printk(KERN_DEBUG "isofs.inode: vol_desc_start = %d\n", ms_info.addr.lba);
}
#endif
if (i==0)
#if WE_OBEY_THE_WRITTEN_STANDARDS
- if (ms_info.xa_flag) /* necessary for a valid ms_info.addr */
+ if (ms_info.xa_flag) /* necessary for a valid ms_info.addr */
#endif
- vol_desc_start=ms_info.addr.lba;
+ vol_desc_start=ms_info.addr.lba;
return vol_desc_start;
}
*/
static int isofs_fill_super(struct super_block *s, void *data, int silent)
{
- struct buffer_head * bh = NULL, *pri_bh = NULL;
- struct hs_primary_descriptor * h_pri = NULL;
- struct iso_primary_descriptor * pri = NULL;
+ struct buffer_head *bh = NULL, *pri_bh = NULL;
+ struct hs_primary_descriptor *h_pri = NULL;
+ struct iso_primary_descriptor *pri = NULL;
struct iso_supplementary_descriptor *sec = NULL;
- struct iso_directory_record * rootp;
- int joliet_level = 0;
- int iso_blknum, block;
- int orig_zonesize;
- int table;
- unsigned int vol_desc_start;
- unsigned long first_data_zone;
- struct inode * inode;
- struct iso9660_options opt;
- struct isofs_sb_info * sbi;
-
- sbi = kmalloc(sizeof(*sbi), GFP_KERNEL);
+ struct iso_directory_record *rootp;
+ struct inode *inode;
+ struct iso9660_options opt;
+ struct isofs_sb_info *sbi;
+ unsigned long first_data_zone;
+ int joliet_level = 0;
+ int iso_blknum, block;
+ int orig_zonesize;
+ int table, error = -EINVAL;
+ unsigned int vol_desc_start;
+
+ save_mount_options(s, data);
+
+ sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
s->s_fs_info = sbi;
- memset(sbi, 0, sizeof(*sbi));
if (!parse_options((char *)data, &opt))
goto out_freesbi;
vol_desc_start = (opt.sbsector != -1) ?
opt.sbsector : isofs_get_last_session(s,opt.session);
- for (iso_blknum = vol_desc_start+16;
- iso_blknum < vol_desc_start+100; iso_blknum++)
- {
- struct hs_volume_descriptor * hdp;
- struct iso_volume_descriptor * vdp;
-
- block = iso_blknum << (ISOFS_BLOCK_BITS - s->s_blocksize_bits);
- if (!(bh = sb_bread(s, block)))
- goto out_no_read;
-
- vdp = (struct iso_volume_descriptor *)bh->b_data;
- hdp = (struct hs_volume_descriptor *)bh->b_data;
-
- /* Due to the overlapping physical location of the descriptors,
- * ISO CDs can match hdp->id==HS_STANDARD_ID as well. To ensure
- * proper identification in this case, we first check for ISO.
- */
- if (strncmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) == 0) {
- if (isonum_711 (vdp->type) == ISO_VD_END)
- break;
- if (isonum_711 (vdp->type) == ISO_VD_PRIMARY) {
- if (pri == NULL) {
- pri = (struct iso_primary_descriptor *)vdp;
- /* Save the buffer in case we need it ... */
- pri_bh = bh;
- bh = NULL;
- }
- }
+ for (iso_blknum = vol_desc_start+16;
+ iso_blknum < vol_desc_start+100; iso_blknum++) {
+ struct hs_volume_descriptor *hdp;
+ struct iso_volume_descriptor *vdp;
+
+ block = iso_blknum << (ISOFS_BLOCK_BITS - s->s_blocksize_bits);
+ if (!(bh = sb_bread(s, block)))
+ goto out_no_read;
+
+ vdp = (struct iso_volume_descriptor *)bh->b_data;
+ hdp = (struct hs_volume_descriptor *)bh->b_data;
+
+ /*
+ * Due to the overlapping physical location of the descriptors,
+ * ISO CDs can match hdp->id==HS_STANDARD_ID as well. To ensure
+ * proper identification in this case, we first check for ISO.
+ */
+ if (strncmp (vdp->id, ISO_STANDARD_ID, sizeof vdp->id) == 0) {
+ if (isonum_711(vdp->type) == ISO_VD_END)
+ break;
+ if (isonum_711(vdp->type) == ISO_VD_PRIMARY) {
+ if (pri == NULL) {
+ pri = (struct iso_primary_descriptor *)vdp;
+ /* Save the buffer in case we need it ... */
+ pri_bh = bh;
+ bh = NULL;
+ }
+ }
#ifdef CONFIG_JOLIET
- else if (isonum_711 (vdp->type) == ISO_VD_SUPPLEMENTARY) {
- sec = (struct iso_supplementary_descriptor *)vdp;
- if (sec->escape[0] == 0x25 && sec->escape[1] == 0x2f) {
- if (opt.joliet == 'y') {
- if (sec->escape[2] == 0x40) {
- joliet_level = 1;
- } else if (sec->escape[2] == 0x43) {
- joliet_level = 2;
- } else if (sec->escape[2] == 0x45) {
- joliet_level = 3;
- }
- printk(KERN_DEBUG"ISO 9660 Extensions: Microsoft Joliet Level %d\n",
- joliet_level);
+ else if (isonum_711(vdp->type) == ISO_VD_SUPPLEMENTARY) {
+ sec = (struct iso_supplementary_descriptor *)vdp;
+ if (sec->escape[0] == 0x25 && sec->escape[1] == 0x2f) {
+ if (opt.joliet) {
+ if (sec->escape[2] == 0x40)
+ joliet_level = 1;
+ else if (sec->escape[2] == 0x43)
+ joliet_level = 2;
+ else if (sec->escape[2] == 0x45)
+ joliet_level = 3;
+
+ printk(KERN_DEBUG "ISO 9660 Extensions: "
+ "Microsoft Joliet Level %d\n",
+ joliet_level);
+ }
+ goto root_found;
+ } else {
+ /* Unknown supplementary volume descriptor */
+ sec = NULL;
+ }
}
- goto root_found;
- } else {
- /* Unknown supplementary volume descriptor */
- sec = NULL;
- }
- }
#endif
- } else {
- if (strncmp (hdp->id, HS_STANDARD_ID, sizeof hdp->id) == 0) {
- if (isonum_711 (hdp->type) != ISO_VD_PRIMARY)
- goto out_freebh;
-
- sbi->s_high_sierra = 1;
- opt.rock = 'n';
- h_pri = (struct hs_primary_descriptor *)vdp;
- goto root_found;
+ } else {
+ if (strncmp (hdp->id, HS_STANDARD_ID, sizeof hdp->id) == 0) {
+ if (isonum_711(hdp->type) != ISO_VD_PRIMARY)
+ goto out_freebh;
+
+ sbi->s_high_sierra = 1;
+ opt.rock = 0;
+ h_pri = (struct hs_primary_descriptor *)vdp;
+ goto root_found;
+ }
}
- }
- /* Just skip any volume descriptors we don't recognize */
+ /* Just skip any volume descriptors we don't recognize */
- brelse(bh);
- bh = NULL;
+ brelse(bh);
+ bh = NULL;
}
/*
* If we fall through, either no volume descriptor was found,
root_found:
- if (joliet_level && (pri == NULL || opt.rock == 'n')) {
- /* This is the case of Joliet with the norock mount flag.
- * A disc with both Joliet and Rock Ridge is handled later
- */
- pri = (struct iso_primary_descriptor *) sec;
+ if (joliet_level && (pri == NULL || !opt.rock)) {
+ /* This is the case of Joliet with the norock mount flag.
+ * A disc with both Joliet and Rock Ridge is handled later
+ */
+ pri = (struct iso_primary_descriptor *) sec;
}
if(sbi->s_high_sierra){
- rootp = (struct iso_directory_record *) h_pri->root_directory_record;
- sbi->s_nzones = isonum_733 (h_pri->volume_space_size);
- sbi->s_log_zone_size = isonum_723 (h_pri->logical_block_size);
- sbi->s_max_size = isonum_733(h_pri->volume_space_size);
+ rootp = (struct iso_directory_record *) h_pri->root_directory_record;
+ sbi->s_nzones = isonum_733(h_pri->volume_space_size);
+ 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);
- sbi->s_max_size = isonum_733(pri->volume_space_size);
+ 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);
+ sbi->s_max_size = isonum_733(pri->volume_space_size);
}
sbi->s_ninodes = 0; /* No way to figure this out easily */
* blocks that were 512 bytes (which should only very rarely
* happen.)
*/
- if(orig_zonesize < opt.blocksize)
+ if (orig_zonesize < opt.blocksize)
goto out_bad_size;
/* RDE: convert log zone size to bit shift */
- switch (sbi->s_log_zone_size)
- { case 512: sbi->s_log_zone_size = 9; break;
- case 1024: sbi->s_log_zone_size = 10; break;
- case 2048: sbi->s_log_zone_size = 11; break;
+ switch (sbi->s_log_zone_size) {
+ case 512: sbi->s_log_zone_size = 9; break;
+ case 1024: sbi->s_log_zone_size = 10; break;
+ case 2048: sbi->s_log_zone_size = 11; break;
- default:
+ default:
goto out_bad_zone_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
- to allow suid. (suid or devices will not show up unless we have
- Rock Ridge extensions) */
+ /*
+ * 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
+ * to allow suid. (suid or devices will not show up unless we have
+ * Rock Ridge extensions)
+ */
s->s_flags |= MS_RDONLY /* | MS_NODEV | MS_NOSUID */;
/* Set this for reference. Its not currently used except on write
which we don't have .. */
-
- first_data_zone = isonum_733 (rootp->extent) +
- isonum_711 (rootp->ext_attr_length);
+
+ first_data_zone = isonum_733(rootp->extent) +
+ isonum_711(rootp->ext_attr_length);
sbi->s_firstdatazone = first_data_zone;
#ifndef BEQUIET
- printk(KERN_DEBUG "Max size:%ld Log zone size:%ld\n",
- sbi->s_max_size,
- 1UL << sbi->s_log_zone_size);
- printk(KERN_DEBUG "First datazone:%ld\n", sbi->s_firstdatazone);
+ printk(KERN_DEBUG "ISOFS: Max size:%ld Log zone size:%ld\n",
+ sbi->s_max_size, 1UL << sbi->s_log_zone_size);
+ printk(KERN_DEBUG "ISOFS: First datazone:%ld\n", sbi->s_firstdatazone);
if(sbi->s_high_sierra)
- printk(KERN_DEBUG "Disc in High Sierra format.\n");
+ printk(KERN_DEBUG "ISOFS: Disc in High Sierra format.\n");
#endif
/*
pri = (struct iso_primary_descriptor *) sec;
rootp = (struct iso_directory_record *)
pri->root_directory_record;
- first_data_zone = isonum_733 (rootp->extent) +
- isonum_711 (rootp->ext_attr_length);
+ first_data_zone = isonum_733(rootp->extent) +
+ isonum_711(rootp->ext_attr_length);
}
/*
#ifdef CONFIG_JOLIET
if (joliet_level && opt.utf8 == 0) {
- char * p = opt.iocharset ? opt.iocharset : CONFIG_NLS_DEFAULT;
+ char *p = opt.iocharset ? opt.iocharset : CONFIG_NLS_DEFAULT;
sbi->s_nls_iocharset = load_nls(p);
if (! sbi->s_nls_iocharset) {
/* Fail only if explicit charset specified */
s->s_op = &isofs_sops;
s->s_export_op = &isofs_export_ops;
sbi->s_mapping = opt.map;
- sbi->s_rock = (opt.rock == 'y' ? 2 : 0);
+ sbi->s_rock = (opt.rock ? 2 : 0);
sbi->s_rock_offset = -1; /* initial offset, will guess until SP is found*/
sbi->s_cruft = opt.cruft;
sbi->s_hide = opt.hide;
sbi->s_showassoc = opt.showassoc;
sbi->s_uid = opt.uid;
sbi->s_gid = opt.gid;
+ sbi->s_uid_set = opt.uid_set;
+ sbi->s_gid_set = opt.gid_set;
sbi->s_utf8 = opt.utf8;
sbi->s_nocompress = opt.nocompress;
+ sbi->s_overriderockperm = opt.overriderockperm;
/*
* It would be incredibly stupid to allow people to mark every file
* on the disk as suid, so we merely allow them to set the default
* permissions.
*/
- sbi->s_mode = opt.mode & 0777;
+ if (opt.fmode != ISOFS_INVALID_MODE)
+ sbi->s_fmode = opt.fmode & 0777;
+ else
+ sbi->s_fmode = ISOFS_INVALID_MODE;
+ if (opt.dmode != ISOFS_INVALID_MODE)
+ sbi->s_dmode = opt.dmode & 0777;
+ else
+ sbi->s_dmode = ISOFS_INVALID_MODE;
/*
* Read the root inode, which _may_ result in changing
* we then decide whether to use the Joliet descriptor.
*/
inode = isofs_iget(s, sbi->s_firstdatazone, 0);
+ if (IS_ERR(inode))
+ goto out_no_root;
/*
* If this disk has both Rock Ridge and Joliet on it, then we
sbi->s_rock = 0;
if (sbi->s_firstdatazone != first_data_zone) {
sbi->s_firstdatazone = first_data_zone;
- printk(KERN_DEBUG
+ printk(KERN_DEBUG
"ISOFS: changing to secondary root\n");
iput(inode);
inode = isofs_iget(s, sbi->s_firstdatazone, 0);
+ if (IS_ERR(inode))
+ goto out_no_root;
}
}
if (opt.check == 'u') {
/* Only Joliet is case insensitive by default */
- if (joliet_level) opt.check = 'r';
- else opt.check = 's';
+ if (joliet_level)
+ opt.check = 'r';
+ else
+ opt.check = 's';
}
sbi->s_joliet_level = joliet_level;
- /* check the root inode */
- if (!inode)
- goto out_no_root;
- if (!inode->i_op)
- goto out_bad_root;
+ /* Make sure the root inode is a directory */
+ if (!S_ISDIR(inode->i_mode)) {
+ printk(KERN_WARNING
+ "isofs_fill_super: root inode is not a directory. "
+ "Corrupted media?\n");
+ goto out_iput;
+ }
+
/* get the root dentry */
s->s_root = d_alloc_root(inode);
if (!(s->s_root))
goto out_no_root;
table = 0;
- if (joliet_level) table += 2;
- if (opt.check == 'r') table++;
+ if (joliet_level)
+ table += 2;
+ if (opt.check == 'r')
+ table++;
s->s_root->d_op = &isofs_dentry_ops[table];
kfree(opt.iocharset);
/*
* Display error messages and free resources.
*/
-out_bad_root:
- printk(KERN_WARNING "isofs_fill_super: root inode not initialized\n");
- goto out_iput;
-out_no_root:
- printk(KERN_WARNING "isofs_fill_super: get root inode failed\n");
out_iput:
iput(inode);
+ goto out_no_inode;
+out_no_root:
+ error = PTR_ERR(inode);
+ if (error != -ENOMEM)
+ printk(KERN_WARNING "%s: get root inode failed\n", __func__);
+out_no_inode:
#ifdef CONFIG_JOLIET
- if (sbi->s_nls_iocharset)
- unload_nls(sbi->s_nls_iocharset);
+ unload_nls(sbi->s_nls_iocharset);
#endif
goto out_freesbi;
out_no_read:
- printk(KERN_WARNING "isofs_fill_super: "
- "bread failed, dev=%s, iso_blknum=%d, block=%d\n",
- s->s_id, iso_blknum, block);
+ printk(KERN_WARNING "%s: bread failed, dev=%s, iso_blknum=%d, block=%d\n",
+ __func__, s->s_id, iso_blknum, block);
goto out_freesbi;
out_bad_zone_size:
- printk(KERN_WARNING "Bad logical zone size %ld\n",
+ printk(KERN_WARNING "ISOFS: Bad logical zone size %ld\n",
sbi->s_log_zone_size);
goto out_freebh;
out_bad_size:
- printk(KERN_WARNING "Logical zone size(%d) < hardware blocksize(%u)\n",
+ printk(KERN_WARNING "ISOFS: Logical zone size(%d) < hardware blocksize(%u)\n",
orig_zonesize, opt.blocksize);
goto out_freebh;
out_unknown_format:
if (!silent)
- printk(KERN_WARNING "Unable to identify CD-ROM format.\n");
+ printk(KERN_WARNING "ISOFS: Unable to identify CD-ROM format.\n");
out_freebh:
brelse(bh);
kfree(opt.iocharset);
kfree(sbi);
s->s_fs_info = NULL;
- return -EINVAL;
+ return error;
}
static int isofs_statfs (struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
+ u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
buf->f_type = ISOFS_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = (ISOFS_SB(sb)->s_nzones
- << (ISOFS_SB(sb)->s_log_zone_size - sb->s_blocksize_bits));
+ << (ISOFS_SB(sb)->s_log_zone_size - sb->s_blocksize_bits));
buf->f_bfree = 0;
buf->f_bavail = 0;
buf->f_files = ISOFS_SB(sb)->s_ninodes;
buf->f_ffree = 0;
+ buf->f_fsid.val[0] = (u32)id;
+ buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = NAME_MAX;
return 0;
}
/*
* Get a set of blocks; filling in buffer_heads if already allocated
* or getblk() if they are not. Returns the number of blocks inserted
- * (0 == error.)
+ * (-ve == error.)
*/
int isofs_get_blocks(struct inode *inode, sector_t iblock_s,
struct buffer_head **bh, unsigned long nblocks)
unsigned int firstext;
unsigned long nextblk, nextoff;
long iblock = (long)iblock_s;
- int section, rv;
+ int section, rv, error;
struct iso_inode_info *ei = ISOFS_I(inode);
lock_kernel();
+ error = -EIO;
rv = 0;
if (iblock < 0 || iblock != iblock_s) {
- printk("isofs_get_blocks: block number too large\n");
+ printk(KERN_DEBUG "%s: block number too large\n", __func__);
goto abort;
}
b_off = iblock;
-
- offset = 0;
- firstext = ei->i_first_extent;
+
+ offset = 0;
+ firstext = ei->i_first_extent;
sect_size = ei->i_section_size >> ISOFS_BUFFER_BITS(inode);
- nextblk = ei->i_next_section_block;
- nextoff = ei->i_next_section_offset;
- section = 0;
+ nextblk = ei->i_next_section_block;
+ nextoff = ei->i_next_section_offset;
+ section = 0;
- while ( nblocks ) {
+ while (nblocks) {
/* If we are *way* beyond the end of the file, print a message.
* Access beyond the end of the file up to the next page boundary
* is normal, however because of the way the page cache works.
* I/O errors.
*/
if (b_off > ((inode->i_size + PAGE_CACHE_SIZE - 1) >> ISOFS_BUFFER_BITS(inode))) {
- printk("isofs_get_blocks: block >= EOF (%ld, %ld)\n",
- iblock, (unsigned long) inode->i_size);
+ printk(KERN_DEBUG "%s: block >= EOF (%ld, %ld)\n",
+ __func__, iblock, (unsigned long) inode->i_size);
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 (IS_ERR(ninode)) {
+ error = PTR_ERR(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(KERN_DEBUG "%s: More than 100 file sections ?!?"
+ " aborting...\n", __func__);
+ printk(KERN_DEBUG "%s: block=%ld firstext=%u sect_size=%u "
+ "nextblk=%lu nextoff=%lu\n", __func__,
+ iblock, firstext, (unsigned) sect_size,
+ nextblk, nextoff);
+ goto abort;
}
}
-
- if ( *bh ) {
+
+ if (*bh) {
map_bh(*bh, inode->i_sb, firstext + b_off - offset);
} else {
*bh = sb_getblk(inode->i_sb, firstext+b_off-offset);
- if ( !*bh )
+ if (!*bh)
goto abort;
}
bh++; /* Next buffer head */
rv++;
}
+ error = 0;
abort:
unlock_kernel();
- return rv;
+ return rv != 0 ? rv : error;
}
/*
static int isofs_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
+ int ret;
+
if (create) {
- printk("isofs_get_block: Kernel tries to allocate a block\n");
+ printk(KERN_DEBUG "%s: Kernel tries to allocate a block\n", __func__);
return -EROFS;
}
- return isofs_get_blocks(inode, iblock, &bh_result, 1) ? 0 : -EIO;
+ ret = isofs_get_blocks(inode, iblock, &bh_result, 1);
+ return ret < 0 ? ret : 0;
}
static int isofs_bmap(struct inode *inode, sector_t block)
.bmap = _isofs_bmap
};
-static inline void test_and_set_uid(uid_t *p, uid_t value)
-{
- if (value)
- *p = value;
-}
-
-static inline void test_and_set_gid(gid_t *p, gid_t value)
-{
- if (value)
- *p = value;
-}
-
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;
- struct buffer_head * bh = NULL;
+ struct buffer_head *bh = NULL;
unsigned long block, offset, block_saved, offset_saved;
int i = 0;
int more_entries = 0;
- struct iso_directory_record * tmpde = NULL;
+ struct iso_directory_record *tmpde = NULL;
struct iso_inode_info *ei = ISOFS_I(inode);
inode->i_size = 0;
offset = ei->i_iget5_offset;
do {
- struct iso_directory_record * de;
+ struct iso_directory_record *de;
unsigned int de_len;
if (!bh) {
return -EIO;
out_toomany:
- printk(KERN_INFO "isofs_read_level3_size: "
- "More than 100 file sections ?!?, aborting...\n"
- "isofs_read_level3_size: inode=%lu\n",
- inode->i_ino);
+ printk(KERN_INFO "%s: More than 100 file sections ?!?, aborting...\n"
+ "isofs_read_level3_size: inode=%lu\n",
+ __func__, inode->i_ino);
goto out;
}
-static void isofs_read_inode(struct inode *inode)
+static int isofs_read_inode(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
struct isofs_sb_info *sbi = ISOFS_SB(sb);
unsigned long bufsize = ISOFS_BUFFER_SIZE(inode);
unsigned long block;
int high_sierra = sbi->s_high_sierra;
- struct buffer_head * bh = NULL;
- struct iso_directory_record * de;
- struct iso_directory_record * tmpde = NULL;
+ struct buffer_head *bh = NULL;
+ struct iso_directory_record *de;
+ struct iso_directory_record *tmpde = NULL;
unsigned int de_len;
unsigned long offset;
struct iso_inode_info *ei = ISOFS_I(inode);
+ int ret = -EIO;
block = ei->i_iget5_block;
bh = sb_bread(inode->i_sb, block);
tmpde = kmalloc(de_len, GFP_KERNEL);
if (tmpde == NULL) {
- printk(KERN_INFO "isofs_read_inode: out of memory\n");
+ printk(KERN_INFO "%s: out of memory\n", __func__);
+ ret = -ENOMEM;
goto fail;
}
memcpy(tmpde, bh->b_data + offset, frag1);
}
inode->i_ino = isofs_get_ino(ei->i_iget5_block,
- ei->i_iget5_offset,
- ISOFS_BUFFER_BITS(inode));
+ ei->i_iget5_offset,
+ ISOFS_BUFFER_BITS(inode));
/* Assume it is a normal-format file unless told otherwise */
ei->i_file_format = isofs_file_normal;
if (de->flags[-high_sierra] & 2) {
- inode->i_mode = S_IRUGO | S_IXUGO | S_IFDIR;
- inode->i_nlink = 1; /* Set to 1. We know there are 2, but
- the find utility tries to optimize
- if it is 2, and it screws up. It is
- easier to give 1 which tells find to
- do it the hard way. */
+ if (sbi->s_dmode != ISOFS_INVALID_MODE)
+ inode->i_mode = S_IFDIR | sbi->s_dmode;
+ else
+ inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
+ inode->i_nlink = 1; /*
+ * Set to 1. We know there are 2, but
+ * the find utility tries to optimize
+ * if it is 2, and it screws up. It is
+ * easier to give 1 which tells find to
+ * do it the hard way.
+ */
} else {
- /* Everybody gets to read the file. */
- inode->i_mode = sbi->s_mode;
+ if (sbi->s_fmode != ISOFS_INVALID_MODE) {
+ inode->i_mode = S_IFREG | sbi->s_fmode;
+ } else {
+ /*
+ * Set default permissions: r-x for all. The disc
+ * could be shared with DOS machines so virtually
+ * anything could be a valid executable.
+ */
+ inode->i_mode = S_IFREG | S_IRUGO | S_IXUGO;
+ }
inode->i_nlink = 1;
- inode->i_mode |= S_IFREG;
}
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);
+ ei->i_section_size = isonum_733(de->size);
if (de->flags[-high_sierra] & 0x80) {
- if(isofs_read_level3_size(inode)) goto fail;
+ ret = isofs_read_level3_size(inode);
+ if (ret < 0)
+ goto fail;
+ ret = -EIO;
} else {
ei->i_next_section_block = 0;
ei->i_next_section_offset = 0;
- inode->i_size = isonum_733 (de->size);
+ inode->i_size = isonum_733(de->size);
}
/*
* this CDROM was mounted with the cruft option.
*/
- if (sbi->s_cruft == 'y')
+ if (sbi->s_cruft)
inode->i_size &= 0x00ffffff;
if (de->interleave[0]) {
- printk("Interleaved files not (yet) supported.\n");
+ printk(KERN_DEBUG "ISOFS: Interleaved files not (yet) supported.\n");
inode->i_size = 0;
}
/* I have no idea what file_unit_size is used for, so
we will flag it for now */
if (de->file_unit_size[0] != 0) {
- printk("File unit size != 0 for ISO file (%ld).\n",
- inode->i_ino);
+ printk(KERN_DEBUG "ISOFS: File unit size != 0 for ISO file (%ld).\n",
+ inode->i_ino);
}
/* I have no idea what other flag bits are used for, so
we will flag it for now */
#ifdef DEBUG
if((de->flags[-high_sierra] & ~2)!= 0){
- printk("Unusual flag settings for ISO file (%ld %x).\n",
- inode->i_ino, de->flags[-high_sierra]);
+ printk(KERN_DEBUG "ISOFS: Unusual flag settings for ISO file "
+ "(%ld %x).\n",
+ inode->i_ino, de->flags[-high_sierra]);
}
#endif
inode->i_atime.tv_nsec =
inode->i_ctime.tv_nsec = 0;
- ei->i_first_extent = (isonum_733 (de->extent) +
- isonum_711 (de->ext_attr_length));
+ ei->i_first_extent = (isonum_733(de->extent) +
+ 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;
+ inode->i_blocks = (inode->i_size + 511) >> 9;
/*
* Now test for possible Rock Ridge extensions which will override
if (!high_sierra) {
parse_rock_ridge_inode(de, inode);
/* if we want uid/gid set, override the rock ridge setting */
- test_and_set_uid(&inode->i_uid, sbi->s_uid);
- test_and_set_gid(&inode->i_gid, sbi->s_gid);
+ if (sbi->s_uid_set)
+ inode->i_uid = sbi->s_uid;
+ if (sbi->s_gid_set)
+ inode->i_gid = sbi->s_gid;
}
+ /* Now set final access rights if overriding rock ridge setting */
+ if (S_ISDIR(inode->i_mode) && sbi->s_overriderockperm &&
+ sbi->s_dmode != ISOFS_INVALID_MODE)
+ inode->i_mode = S_IFDIR | sbi->s_dmode;
+ if (S_ISREG(inode->i_mode) && sbi->s_overriderockperm &&
+ sbi->s_fmode != ISOFS_INVALID_MODE)
+ inode->i_mode = S_IFREG | sbi->s_fmode;
/* Install the inode operations vector */
if (S_ISREG(inode->i_mode)) {
inode->i_fop = &generic_ro_fops;
- switch ( ei->i_file_format ) {
+ switch (ei->i_file_format) {
#ifdef CONFIG_ZISOFS
case isofs_file_compressed:
inode->i_data.a_ops = &zisofs_aops;
/* XXX - parse_rock_ridge_inode() had already set i_rdev. */
init_special_inode(inode, inode->i_mode, inode->i_rdev);
+ ret = 0;
out:
kfree(tmpde);
if (bh)
brelse(bh);
- return;
+ return ret;
out_badread:
printk(KERN_WARNING "ISOFS: unable to read i-node block\n");
fail:
- make_bad_inode(inode);
goto out;
}
struct isofs_iget5_callback_data *d =
(struct isofs_iget5_callback_data*)data;
return (i->i_iget5_block == d->block)
- && (i->i_iget5_offset == d->offset);
+ && (i->i_iget5_offset == d->offset);
}
static int isofs_iget5_set(struct inode *ino, void *data)
unsigned long hashval;
struct inode *inode;
struct isofs_iget5_callback_data data;
+ long ret;
if (offset >= 1ul << sb->s_blocksize_bits)
- return NULL;
+ return ERR_PTR(-EINVAL);
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);
+ &isofs_iget5_set, &data);
- if (inode && (inode->i_state & I_NEW)) {
- sb->s_op->read_inode(inode);
- unlock_new_inode(inode);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+
+ if (inode->i_state & I_NEW) {
+ ret = isofs_read_inode(inode);
+ if (ret < 0) {
+ iget_failed(inode);
+ inode = ERR_PTR(ret);
+ } else {
+ unlock_new_inode(inode);
+ }
}
return inode;
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
return get_sb_bdev(fs_type, flags, dev_name, data, isofs_fill_super,
- mnt);
+ mnt);
}
static struct file_system_type iso9660_fs_type = {
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff