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-rw-r--r--fs/adfs/adfs.h70
-rw-r--r--fs/adfs/dir.c25
-rw-r--r--fs/adfs/dir_f.c38
-rw-r--r--fs/adfs/dir_fplus.c21
-rw-r--r--fs/adfs/inode.c12
-rw-r--r--fs/adfs/map.c15
-rw-r--r--fs/adfs/super.c121
-rw-r--r--include/uapi/linux/adfs_fs.h6
8 files changed, 164 insertions, 144 deletions
diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 804c6a77c5db..b7e844d2f321 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -1,4 +1,5 @@
/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/buffer_head.h>
#include <linux/fs.h>
#include <linux/adfs_fs.h>
@@ -8,6 +9,15 @@
#define ADFS_BAD_FRAG 1
#define ADFS_ROOT_FRAG 2
+#define ADFS_FILETYPE_NONE ((u16)~0)
+
+/* RISC OS 12-bit filetype is stored in load_address[19:8] */
+static inline u16 adfs_filetype(u32 loadaddr)
+{
+ return (loadaddr & 0xfff00000) == 0xfff00000 ?
+ (loadaddr >> 8) & 0xfff : ADFS_FILETYPE_NONE;
+}
+
#define ADFS_NDA_OWNER_READ (1 << 0)
#define ADFS_NDA_OWNER_WRITE (1 << 1)
#define ADFS_NDA_LOCKED (1 << 2)
@@ -18,22 +28,28 @@
#include "dir_f.h"
-struct buffer_head;
-
/*
* adfs file system inode data in memory
*/
struct adfs_inode_info {
loff_t mmu_private;
- unsigned long parent_id; /* object id of parent */
+ __u32 parent_id; /* parent indirect disc address */
__u32 loadaddr; /* RISC OS load address */
__u32 execaddr; /* RISC OS exec address */
- unsigned int filetype; /* RISC OS file type */
unsigned int attr; /* RISC OS permissions */
- unsigned int stamped:1; /* RISC OS file has date/time */
struct inode vfs_inode;
};
+static inline struct adfs_inode_info *ADFS_I(struct inode *inode)
+{
+ return container_of(inode, struct adfs_inode_info, vfs_inode);
+}
+
+static inline bool adfs_inode_is_stamped(struct inode *inode)
+{
+ return (ADFS_I(inode)->loadaddr & 0xfff00000) == 0xfff00000;
+}
+
/*
* Forward-declare this
*/
@@ -59,10 +75,8 @@ struct adfs_sb_info {
__u32 s_ids_per_zone; /* max. no ids in one zone */
__u32 s_idlen; /* length of ID in map */
__u32 s_map_size; /* sector size of a map */
- unsigned long s_size; /* total size (in blocks) of this fs */
signed int s_map2blk; /* shift left by this for map->sector*/
unsigned int s_log2sharesize;/* log2 share size */
- __le32 s_version; /* disc format version */
unsigned int s_namelen; /* maximum number of characters in name */
};
@@ -71,11 +85,6 @@ static inline struct adfs_sb_info *ADFS_SB(struct super_block *sb)
return sb->s_fs_info;
}
-static inline struct adfs_inode_info *ADFS_I(struct inode *inode)
-{
- return container_of(inode, struct adfs_inode_info, vfs_inode);
-}
-
/*
* Directory handling
*/
@@ -89,7 +98,7 @@ struct adfs_dir {
struct buffer_head **bh_fplus;
unsigned int pos;
- unsigned int parent_id;
+ __u32 parent_id;
struct adfs_dirheader dirhead;
union adfs_dirtail dirtail;
@@ -101,20 +110,18 @@ struct adfs_dir {
#define ADFS_MAX_NAME_LEN (256 + 4) /* +4 for ,xyz hex filetype suffix */
struct object_info {
__u32 parent_id; /* parent object id */
- __u32 file_id; /* object id */
+ __u32 indaddr; /* indirect disc addr */
__u32 loadaddr; /* load address */
__u32 execaddr; /* execution address */
__u32 size; /* size */
__u8 attr; /* RISC OS attributes */
unsigned int name_len; /* name length */
char name[ADFS_MAX_NAME_LEN];/* file name */
-
- /* RISC OS file type (12-bit: derived from loadaddr) */
- __u16 filetype;
};
struct adfs_dir_ops {
- int (*read)(struct super_block *sb, unsigned int id, unsigned int sz, struct adfs_dir *dir);
+ int (*read)(struct super_block *sb, unsigned int indaddr,
+ unsigned int size, struct adfs_dir *dir);
int (*setpos)(struct adfs_dir *dir, unsigned int fpos);
int (*getnext)(struct adfs_dir *dir, struct object_info *obj);
int (*update)(struct adfs_dir *dir, struct object_info *obj);
@@ -137,7 +144,7 @@ int adfs_write_inode(struct inode *inode, struct writeback_control *wbc);
int adfs_notify_change(struct dentry *dentry, struct iattr *attr);
/* map.c */
-extern int adfs_map_lookup(struct super_block *sb, unsigned int frag_id, unsigned int offset);
+int adfs_map_lookup(struct super_block *sb, u32 frag_id, unsigned int offset);
extern unsigned int adfs_map_free(struct super_block *sb);
/* Misc */
@@ -145,6 +152,7 @@ __printf(3, 4)
void __adfs_error(struct super_block *sb, const char *function,
const char *fmt, ...);
#define adfs_error(sb, fmt...) __adfs_error(sb, __func__, fmt)
+void adfs_msg(struct super_block *sb, const char *pfx, const char *fmt, ...);
/* super.c */
@@ -182,16 +190,28 @@ static inline __u32 signed_asl(__u32 val, signed int shift)
*
* The root directory ID should always be looked up in the map [3.4]
*/
-static inline int
-__adfs_block_map(struct super_block *sb, unsigned int object_id,
- unsigned int block)
+static inline int __adfs_block_map(struct super_block *sb, u32 indaddr,
+ unsigned int block)
{
- if (object_id & 255) {
+ if (indaddr & 255) {
unsigned int off;
- off = (object_id & 255) - 1;
+ off = (indaddr & 255) - 1;
block += off << ADFS_SB(sb)->s_log2sharesize;
}
- return adfs_map_lookup(sb, object_id >> 8, block);
+ return adfs_map_lookup(sb, indaddr >> 8, block);
+}
+
+/* Return the disc record from the map */
+static inline
+struct adfs_discrecord *adfs_map_discrecord(struct adfs_discmap *dm)
+{
+ return (void *)(dm[0].dm_bh->b_data + 4);
+}
+
+static inline u64 adfs_disc_size(const struct adfs_discrecord *dr)
+{
+ return (u64)le32_to_cpu(dr->disc_size_high) << 32 |
+ le32_to_cpu(dr->disc_size);
}
diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 35a4d9f4c3ae..a54c53244992 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -35,20 +35,14 @@ void adfs_object_fixup(struct adfs_dir *dir, struct object_info *obj)
if (obj->name_len <= 2 && dots == obj->name_len)
obj->name[0] = '^';
- obj->filetype = -1;
-
/*
- * object is a file and is filetyped and timestamped?
- * RISC OS 12-bit filetype is stored in load_address[19:8]
+ * If the object is a file, and the user requested the ,xyz hex
+ * filetype suffix to the name, check the filetype and append.
*/
- if ((0 == (obj->attr & ADFS_NDA_DIRECTORY)) &&
- (0xfff00000 == (0xfff00000 & obj->loadaddr))) {
- obj->filetype = (__u16) ((0x000fff00 & obj->loadaddr) >> 8);
-
- /* optionally append the ,xyz hex filetype suffix */
- if (ADFS_SB(dir->sb)->s_ftsuffix) {
- __u16 filetype = obj->filetype;
+ if (!(obj->attr & ADFS_NDA_DIRECTORY) && ADFS_SB(dir->sb)->s_ftsuffix) {
+ u16 filetype = adfs_filetype(obj->loadaddr);
+ if (filetype != ADFS_FILETYPE_NONE) {
obj->name[obj->name_len++] = ',';
obj->name[obj->name_len++] = hex_asc_lo(filetype >> 8);
obj->name[obj->name_len++] = hex_asc_lo(filetype >> 4);
@@ -92,7 +86,7 @@ adfs_readdir(struct file *file, struct dir_context *ctx)
goto unlock_out;
while (ops->getnext(&dir, &obj) == 0) {
if (!dir_emit(ctx, obj.name, obj.name_len,
- obj.file_id, DT_UNKNOWN))
+ obj.indaddr, DT_UNKNOWN))
break;
ctx->pos++;
}
@@ -113,8 +107,8 @@ adfs_dir_update(struct super_block *sb, struct object_info *obj, int wait)
const struct adfs_dir_ops *ops = ADFS_SB(sb)->s_dir;
struct adfs_dir dir;
- printk(KERN_INFO "adfs_dir_update: object %06X in dir %06X\n",
- obj->file_id, obj->parent_id);
+ printk(KERN_INFO "adfs_dir_update: object %06x in dir %06x\n",
+ obj->indaddr, obj->parent_id);
if (!ops->update) {
ret = -EINVAL;
@@ -178,7 +172,8 @@ static int adfs_dir_lookup_byname(struct inode *inode, const struct qstr *qstr,
goto out;
if (ADFS_I(inode)->parent_id != dir.parent_id) {
- adfs_error(sb, "parent directory changed under me! (%lx but got %x)\n",
+ adfs_error(sb,
+ "parent directory changed under me! (%06x but got %06x)\n",
ADFS_I(inode)->parent_id, dir.parent_id);
ret = -EIO;
goto free_out;
diff --git a/fs/adfs/dir_f.c b/fs/adfs/dir_f.c
index 7557378e58b3..c1a950c7400a 100644
--- a/fs/adfs/dir_f.c
+++ b/fs/adfs/dir_f.c
@@ -6,7 +6,6 @@
*
* E and F format directory handling
*/
-#include <linux/buffer_head.h>
#include "adfs.h"
#include "dir_f.h"
@@ -124,12 +123,9 @@ adfs_dir_checkbyte(const struct adfs_dir *dir)
return (dircheck ^ (dircheck >> 8) ^ (dircheck >> 16) ^ (dircheck >> 24)) & 0xff;
}
-/*
- * Read and check that a directory is valid
- */
-static int
-adfs_dir_read(struct super_block *sb, unsigned long object_id,
- unsigned int size, struct adfs_dir *dir)
+/* Read and check that a directory is valid */
+static int adfs_dir_read(struct super_block *sb, u32 indaddr,
+ unsigned int size, struct adfs_dir *dir)
{
const unsigned int blocksize_bits = sb->s_blocksize_bits;
int blk = 0;
@@ -149,10 +145,10 @@ adfs_dir_read(struct super_block *sb, unsigned long object_id,
for (blk = 0; blk < size; blk++) {
int phys;
- phys = __adfs_block_map(sb, object_id, blk);
+ phys = __adfs_block_map(sb, indaddr, blk);
if (!phys) {
- adfs_error(sb, "dir object %lX has a hole at offset %d",
- object_id, blk);
+ adfs_error(sb, "dir %06x has a hole at offset %d",
+ indaddr, blk);
goto release_buffers;
}
@@ -180,8 +176,7 @@ adfs_dir_read(struct super_block *sb, unsigned long object_id,
return 0;
bad_dir:
- adfs_error(sb, "corrupted directory fragment %lX",
- object_id);
+ adfs_error(sb, "dir %06x is corrupted", indaddr);
release_buffers:
for (blk -= 1; blk >= 0; blk -= 1)
brelse(dir->bh[blk]);
@@ -208,7 +203,7 @@ adfs_dir2obj(struct adfs_dir *dir, struct object_info *obj,
}
obj->name_len = name_len;
- obj->file_id = adfs_readval(de->dirinddiscadd, 3);
+ obj->indaddr = adfs_readval(de->dirinddiscadd, 3);
obj->loadaddr = adfs_readval(de->dirload, 4);
obj->execaddr = adfs_readval(de->direxec, 4);
obj->size = adfs_readval(de->dirlen, 4);
@@ -223,7 +218,7 @@ adfs_dir2obj(struct adfs_dir *dir, struct object_info *obj,
static inline void
adfs_obj2dir(struct adfs_direntry *de, struct object_info *obj)
{
- adfs_writeval(de->dirinddiscadd, 3, obj->file_id);
+ adfs_writeval(de->dirinddiscadd, 3, obj->indaddr);
adfs_writeval(de->dirload, 4, obj->loadaddr);
adfs_writeval(de->direxec, 4, obj->execaddr);
adfs_writeval(de->dirlen, 4, obj->size);
@@ -309,8 +304,7 @@ __adfs_dir_put(struct adfs_dir *dir, int pos, struct object_info *obj)
* the caller is responsible for holding the necessary
* locks.
*/
-static int
-adfs_dir_find_entry(struct adfs_dir *dir, unsigned long object_id)
+static int adfs_dir_find_entry(struct adfs_dir *dir, u32 indaddr)
{
int pos, ret;
@@ -322,7 +316,7 @@ adfs_dir_find_entry(struct adfs_dir *dir, unsigned long object_id)
if (!__adfs_dir_get(dir, pos, &obj))
break;
- if (obj.file_id == object_id) {
+ if (obj.indaddr == indaddr) {
ret = pos;
break;
}
@@ -331,15 +325,15 @@ adfs_dir_find_entry(struct adfs_dir *dir, unsigned long object_id)
return ret;
}
-static int
-adfs_f_read(struct super_block *sb, unsigned int id, unsigned int sz, struct adfs_dir *dir)
+static int adfs_f_read(struct super_block *sb, u32 indaddr, unsigned int size,
+ struct adfs_dir *dir)
{
int ret;
- if (sz != ADFS_NEWDIR_SIZE)
+ if (size != ADFS_NEWDIR_SIZE)
return -EIO;
- ret = adfs_dir_read(sb, id, sz, dir);
+ ret = adfs_dir_read(sb, indaddr, size, dir);
if (ret)
adfs_error(sb, "unable to read directory");
else
@@ -376,7 +370,7 @@ adfs_f_update(struct adfs_dir *dir, struct object_info *obj)
struct super_block *sb = dir->sb;
int ret, i;
- ret = adfs_dir_find_entry(dir, obj->file_id);
+ ret = adfs_dir_find_entry(dir, obj->indaddr);
if (ret < 0) {
adfs_error(dir->sb, "unable to locate entry to update");
goto out;
diff --git a/fs/adfs/dir_fplus.c b/fs/adfs/dir_fplus.c
index 6c5fbb0259c9..d56924c11b17 100644
--- a/fs/adfs/dir_fplus.c
+++ b/fs/adfs/dir_fplus.c
@@ -4,7 +4,6 @@
*
* Copyright (C) 1997-1999 Russell King
*/
-#include <linux/buffer_head.h>
#include <linux/slab.h>
#include "adfs.h"
#include "dir_fplus.h"
@@ -37,17 +36,15 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
h = (struct adfs_bigdirheader *)dir->bh_fplus[0]->b_data;
size = le32_to_cpu(h->bigdirsize);
if (size != sz) {
- printk(KERN_WARNING "adfs: adfs_fplus_read:"
- " directory header size %X\n"
- " does not match directory size %X\n",
- size, sz);
+ adfs_msg(sb, KERN_WARNING,
+ "directory header size %X does not match directory size %X",
+ size, sz);
}
if (h->bigdirversion[0] != 0 || h->bigdirversion[1] != 0 ||
h->bigdirversion[2] != 0 || size & 2047 ||
h->bigdirstartname != cpu_to_le32(BIGDIRSTARTNAME)) {
- printk(KERN_WARNING "adfs: dir object %X has"
- " malformed dir header\n", id);
+ adfs_error(sb, "dir %06x has malformed header", id);
goto out;
}
@@ -58,9 +55,10 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
kcalloc(size, sizeof(struct buffer_head *),
GFP_KERNEL);
if (!bh_fplus) {
+ adfs_msg(sb, KERN_ERR,
+ "not enough memory for dir object %X (%d blocks)",
+ id, size);
ret = -ENOMEM;
- adfs_error(sb, "not enough memory for"
- " dir object %X (%d blocks)", id, size);
goto out;
}
dir->bh_fplus = bh_fplus;
@@ -91,8 +89,7 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
if (t->bigdirendname != cpu_to_le32(BIGDIRENDNAME) ||
t->bigdirendmasseq != h->startmasseq ||
t->reserved[0] != 0 || t->reserved[1] != 0) {
- printk(KERN_WARNING "adfs: dir object %X has "
- "malformed dir end\n", id);
+ adfs_error(sb, "dir %06x has malformed tail", id);
goto out;
}
@@ -180,7 +177,7 @@ adfs_fplus_getnext(struct adfs_dir *dir, struct object_info *obj)
obj->loadaddr = le32_to_cpu(bde.bigdirload);
obj->execaddr = le32_to_cpu(bde.bigdirexec);
obj->size = le32_to_cpu(bde.bigdirlen);
- obj->file_id = le32_to_cpu(bde.bigdirindaddr);
+ obj->indaddr = le32_to_cpu(bde.bigdirindaddr);
obj->attr = le32_to_cpu(bde.bigdirattr);
obj->name_len = le32_to_cpu(bde.bigdirobnamelen);
diff --git a/fs/adfs/inode.c b/fs/adfs/inode.c
index 904d624541ad..124de75413a5 100644
--- a/fs/adfs/inode.c
+++ b/fs/adfs/inode.c
@@ -94,7 +94,7 @@ adfs_atts2mode(struct super_block *sb, struct inode *inode)
return S_IFDIR | S_IXUGO | mode;
}
- switch (ADFS_I(inode)->filetype) {
+ switch (adfs_filetype(ADFS_I(inode)->loadaddr)) {
case 0xfc0: /* LinkFS */
return S_IFLNK|S_IRWXUGO;
@@ -174,7 +174,7 @@ adfs_adfs2unix_time(struct timespec64 *tv, struct inode *inode)
2208988800000000000LL;
s64 nsec;
- if (ADFS_I(inode)->stamped == 0)
+ if (!adfs_inode_is_stamped(inode))
goto cur_time;
high = ADFS_I(inode)->loadaddr & 0xFF; /* top 8 bits of timestamp */
@@ -213,7 +213,7 @@ adfs_unix2adfs_time(struct inode *inode, unsigned int secs)
{
unsigned int high, low;
- if (ADFS_I(inode)->stamped) {
+ if (adfs_inode_is_stamped(inode)) {
/* convert 32-bit seconds to 40-bit centi-seconds */
low = (secs & 255) * 100;
high = (secs / 256) * 100 + (low >> 8) + 0x336e996a;
@@ -247,7 +247,7 @@ adfs_iget(struct super_block *sb, struct object_info *obj)
inode->i_uid = ADFS_SB(sb)->s_uid;
inode->i_gid = ADFS_SB(sb)->s_gid;
- inode->i_ino = obj->file_id;
+ inode->i_ino = obj->indaddr;
inode->i_size = obj->size;
set_nlink(inode, 2);
inode->i_blocks = (inode->i_size + sb->s_blocksize - 1) >>
@@ -263,8 +263,6 @@ adfs_iget(struct super_block *sb, struct object_info *obj)
ADFS_I(inode)->loadaddr = obj->loadaddr;
ADFS_I(inode)->execaddr = obj->execaddr;
ADFS_I(inode)->attr = obj->attr;
- ADFS_I(inode)->filetype = obj->filetype;
- ADFS_I(inode)->stamped = ((obj->loadaddr & 0xfff00000) == 0xfff00000);
inode->i_mode = adfs_atts2mode(sb, inode);
adfs_adfs2unix_time(&inode->i_mtime, inode);
@@ -355,7 +353,7 @@ int adfs_write_inode(struct inode *inode, struct writeback_control *wbc)
struct object_info obj;
int ret;
- obj.file_id = inode->i_ino;
+ obj.indaddr = inode->i_ino;
obj.name_len = 0;
obj.parent_id = ADFS_I(inode)->parent_id;
obj.loadaddr = ADFS_I(inode)->loadaddr;
diff --git a/fs/adfs/map.c b/fs/adfs/map.c
index 4d34338c6176..f44d12cef5be 100644
--- a/fs/adfs/map.c
+++ b/fs/adfs/map.c
@@ -4,7 +4,6 @@
*
* Copyright (C) 1997-2002 Russell King
*/
-#include <linux/buffer_head.h>
#include <asm/unaligned.h>
#include "adfs.h"
@@ -64,9 +63,8 @@ static DEFINE_RWLOCK(adfs_map_lock);
* output of:
* gcc -D__KERNEL__ -O2 -I../../include -o - -S map.c
*/
-static int
-lookup_zone(const struct adfs_discmap *dm, const unsigned int idlen,
- const unsigned int frag_id, unsigned int *offset)
+static int lookup_zone(const struct adfs_discmap *dm, const unsigned int idlen,
+ const u32 frag_id, unsigned int *offset)
{
const unsigned int mapsize = dm->dm_endbit;
const u32 idmask = (1 << idlen) - 1;
@@ -185,9 +183,8 @@ error:
return 0;
}
-static int
-scan_map(struct adfs_sb_info *asb, unsigned int zone,
- const unsigned int frag_id, unsigned int mapoff)
+static int scan_map(struct adfs_sb_info *asb, unsigned int zone,
+ const u32 frag_id, unsigned int mapoff)
{
const unsigned int idlen = asb->s_idlen;
struct adfs_discmap *dm, *dm_end;
@@ -241,9 +238,7 @@ adfs_map_free(struct super_block *sb)
return signed_asl(total, asb->s_map2blk);
}
-int
-adfs_map_lookup(struct super_block *sb, unsigned int frag_id,
- unsigned int offset)
+int adfs_map_lookup(struct super_block *sb, u32 frag_id, unsigned int offset)
{
struct adfs_sb_info *asb = ADFS_SB(sb);
unsigned int zone, mapoff;
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index ffb669f9bba7..65b04ebb51c3 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -6,7 +6,6 @@
*/
#include <linux/module.h>
#include <linux/init.h>
-#include <linux/buffer_head.h>
#include <linux/parser.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
@@ -17,25 +16,42 @@
#include "dir_f.h"
#include "dir_fplus.h"
+#define ADFS_SB_FLAGS SB_NOATIME
+
#define ADFS_DEFAULT_OWNER_MASK S_IRWXU
#define ADFS_DEFAULT_OTHER_MASK (S_IRWXG | S_IRWXO)
void __adfs_error(struct super_block *sb, const char *function, const char *fmt, ...)
{
- char error_buf[128];
+ struct va_format vaf;
va_list args;
va_start(args, fmt);
- vsnprintf(error_buf, sizeof(error_buf), fmt, args);
- va_end(args);
+ vaf.fmt = fmt;
+ vaf.va = &args;
- printk(KERN_CRIT "ADFS-fs error (device %s)%s%s: %s\n",
+ printk(KERN_CRIT "ADFS-fs error (device %s)%s%s: %pV\n",
sb->s_id, function ? ": " : "",
- function ? function : "", error_buf);
+ function ? function : "", &vaf);
+
+ va_end(args);
+}
+
+void adfs_msg(struct super_block *sb, const char *pfx, const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ printk("%sADFS-fs (%s): %pV\n", pfx, sb->s_id, &vaf);
+ va_end(args);
}
static int adfs_checkdiscrecord(struct adfs_discrecord *dr)
{
+ unsigned int max_idlen;
int i;
/* sector size must be 256, 512 or 1024 bytes */
@@ -55,8 +71,13 @@ static int adfs_checkdiscrecord(struct adfs_discrecord *dr)
if (le32_to_cpu(dr->disc_size_high) >> dr->log2secsize)
return 1;
- /* idlen must be no greater than 19 v2 [1.0] */
- if (dr->idlen > 19)
+ /*
+ * Maximum idlen is limited to 16 bits for new directories by
+ * the three-byte storage of an indirect disc address. For
+ * big directories, idlen must be no greater than 19 v2 [1.0]
+ */
+ max_idlen = dr->format_version ? 19 : 16;
+ if (dr->idlen > max_idlen)
return 1;
/* reserved bytes should be zero */
@@ -152,10 +173,10 @@ static const match_table_t tokens = {
{Opt_err, NULL}
};
-static int parse_options(struct super_block *sb, char *options)
+static int parse_options(struct super_block *sb, struct adfs_sb_info *asb,
+ char *options)
{
char *p;
- struct adfs_sb_info *asb = ADFS_SB(sb);
int option;
if (!options)
@@ -199,8 +220,9 @@ static int parse_options(struct super_block *sb, char *options)
asb->s_ftsuffix = option;
break;
default:
- printk("ADFS-fs: unrecognised mount option \"%s\" "
- "or missing value\n", p);
+ adfs_msg(sb, KERN_ERR,
+ "unrecognised mount option \"%s\" or missing value",
+ p);
return -EINVAL;
}
}
@@ -209,21 +231,31 @@ static int parse_options(struct super_block *sb, char *options)
static int adfs_remount(struct super_block *sb, int *flags, char *data)
{
+ struct adfs_sb_info temp_asb;
+ int ret;
+
sync_filesystem(sb);
- *flags |= SB_NODIRATIME;
- return parse_options(sb, data);
+ *flags |= ADFS_SB_FLAGS;
+
+ temp_asb = *ADFS_SB(sb);
+ ret = parse_options(sb, &temp_asb, data);
+ if (ret == 0)
+ *ADFS_SB(sb) = temp_asb;
+
+ return ret;
}
static int adfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct adfs_sb_info *sbi = ADFS_SB(sb);
+ struct adfs_discrecord *dr = adfs_map_discrecord(sbi->s_map);
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
buf->f_type = ADFS_SUPER_MAGIC;
buf->f_namelen = sbi->s_namelen;
buf->f_bsize = sb->s_blocksize;
- buf->f_blocks = sbi->s_size;
+ buf->f_blocks = adfs_disc_size(dr) >> sb->s_blocksize_bits;
buf->f_files = sbi->s_ids_per_zone * sbi->s_map_size;
buf->f_bavail =
buf->f_bfree = adfs_map_free(sb);
@@ -327,8 +359,7 @@ static struct adfs_discmap *adfs_read_map(struct super_block *sb, struct adfs_di
i = zone - 1;
dm[0].dm_startblk = 0;
dm[0].dm_startbit = ADFS_DR_SIZE_BITS;
- dm[i].dm_endbit = (le32_to_cpu(dr->disc_size_high) << (32 - dr->log2bpmb)) +
- (le32_to_cpu(dr->disc_size) >> dr->log2bpmb) +
+ dm[i].dm_endbit = (adfs_disc_size(dr) >> dr->log2bpmb) +
(ADFS_DR_SIZE_BITS - i * zone_size);
if (adfs_checkmap(sb, dm))
@@ -344,27 +375,18 @@ error_free:
return ERR_PTR(-EIO);
}
-static inline unsigned long adfs_discsize(struct adfs_discrecord *dr, int block_bits)
-{
- unsigned long discsize;
-
- discsize = le32_to_cpu(dr->disc_size_high) << (32 - block_bits);
- discsize |= le32_to_cpu(dr->disc_size) >> block_bits;
-
- return discsize;
-}
-
static int adfs_fill_super(struct super_block *sb, void *data, int silent)
{
struct adfs_discrecord *dr;
struct buffer_head *bh;
struct object_info root_obj;
unsigned char *b_data;
+ unsigned int blocksize;
struct adfs_sb_info *asb;
struct inode *root;
int ret = -EINVAL;
- sb->s_flags |= SB_NODIRATIME;
+ sb->s_flags |= ADFS_SB_FLAGS;
asb = kzalloc(sizeof(*asb), GFP_KERNEL);
if (!asb)
@@ -378,12 +400,12 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
asb->s_other_mask = ADFS_DEFAULT_OTHER_MASK;
asb->s_ftsuffix = 0;
- if (parse_options(sb, data))
+ if (parse_options(sb, asb, data))
goto error;
sb_set_blocksize(sb, BLOCK_SIZE);
if (!(bh = sb_bread(sb, ADFS_DISCRECORD / BLOCK_SIZE))) {
- adfs_error(sb, "unable to read superblock");
+ adfs_msg(sb, KERN_ERR, "error: unable to read superblock");
ret = -EIO;
goto error;
}
@@ -391,11 +413,8 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
b_data = bh->b_data + (ADFS_DISCRECORD % BLOCK_SIZE);
if (adfs_checkbblk(b_data)) {
- if (!silent)
- printk("VFS: Can't find an adfs filesystem on dev "
- "%s.\n", sb->s_id);
ret = -EINVAL;
- goto error_free_bh;
+ goto error_badfs;
}
dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET);
@@ -404,33 +423,33 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
* Do some sanity checks on the ADFS disc record
*/
if (adfs_checkdiscrecord(dr)) {
- if (!silent)
- printk("VPS: Can't find an adfs filesystem on dev "
- "%s.\n", sb->s_id);
ret = -EINVAL;
- goto error_free_bh;
+ goto error_badfs;
}
+ blocksize = 1 << dr->log2secsize;
brelse(bh);
- if (sb_set_blocksize(sb, 1 << dr->log2secsize)) {
+
+ if (sb_set_blocksize(sb, blocksize)) {
bh = sb_bread(sb, ADFS_DISCRECORD / sb->s_blocksize);
if (!bh) {
- adfs_error(sb, "couldn't read superblock on "
- "2nd try.");
+ adfs_msg(sb, KERN_ERR,
+ "error: couldn't read superblock on 2nd try.");
ret = -EIO;
goto error;
}
b_data = bh->b_data + (ADFS_DISCRECORD % sb->s_blocksize);
if (adfs_checkbblk(b_data)) {
- adfs_error(sb, "disc record mismatch, very weird!");
+ adfs_msg(sb, KERN_ERR,
+ "error: disc record mismatch, very weird!");
ret = -EINVAL;
goto error_free_bh;
}
dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET);
} else {
if (!silent)
- printk(KERN_ERR "VFS: Unsupported blocksize on dev "
- "%s.\n", sb->s_id);
+ adfs_msg(sb, KERN_ERR,
+ "error: unsupported blocksize");
ret = -EINVAL;
goto error;
}
@@ -443,8 +462,6 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
asb->s_idlen = dr->idlen;
asb->s_map_size = dr->nzones | (dr->nzones_high << 8);
asb->s_map2blk = dr->log2bpmb - dr->log2secsize;
- asb->s_size = adfs_discsize(dr, sb->s_blocksize_bits);
- asb->s_version = dr->format_version;
asb->s_log2sharesize = dr->log2sharesize;
asb->s_map = adfs_read_map(sb, dr);
@@ -460,9 +477,9 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
*/
sb->s_op = &adfs_sops;
- dr = (struct adfs_discrecord *)(asb->s_map[0].dm_bh->b_data + 4);
+ dr = adfs_map_discrecord(asb->s_map);
- root_obj.parent_id = root_obj.file_id = le32_to_cpu(dr->root);
+ root_obj.parent_id = root_obj.indaddr = le32_to_cpu(dr->root);
root_obj.name_len = 0;
/* Set root object date as 01 Jan 1987 00:00:00 */
root_obj.loadaddr = 0xfff0003f;
@@ -470,13 +487,12 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
root_obj.size = ADFS_NEWDIR_SIZE;
root_obj.attr = ADFS_NDA_DIRECTORY | ADFS_NDA_OWNER_READ |
ADFS_NDA_OWNER_WRITE | ADFS_NDA_PUBLIC_READ;
- root_obj.filetype = -1;
/*
* If this is a F+ disk with variable length directories,
* get the root_size from the disc record.
*/
- if (asb->s_version) {
+ if (dr->format_version) {
root_obj.size = le32_to_cpu(dr->root_size);
asb->s_dir = &adfs_fplus_dir_ops;
asb->s_namelen = ADFS_FPLUS_NAME_LEN;
@@ -505,6 +521,11 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
}
return 0;
+error_badfs:
+ if (!silent)
+ adfs_msg(sb, KERN_ERR,
+ "error: can't find an ADFS filesystem on dev %s.",
+ sb->s_id);
error_free_bh:
brelse(bh);
error:
diff --git a/include/uapi/linux/adfs_fs.h b/include/uapi/linux/adfs_fs.h
index 151d93e27ed4..f1a7d67a7323 100644
--- a/include/uapi/linux/adfs_fs.h
+++ b/include/uapi/linux/adfs_fs.h
@@ -29,17 +29,17 @@ struct adfs_discrecord {
__u8 log2sharesize:4;
__u8 unused40:4;
__u8 big_flag:1;
- __u8 unused41:1;
+ __u8 unused41:7;
__u8 nzones_high;
+ __u8 reserved43;
__le32 format_version;
__le32 root_size;
__u8 unused52[60 - 52];
-};
+} __attribute__((packed, aligned(4)));
#define ADFS_DISCRECORD (0xc00)
#define ADFS_DR_OFFSET (0x1c0)
#define ADFS_DR_SIZE 60
#define ADFS_DR_SIZE_BITS (ADFS_DR_SIZE << 3)
-
#endif /* _UAPI_ADFS_FS_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 16:36:27 +0000