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Diffstat (limited to 'fs')
-rw-r--r--fs/bfs/bfs.h4
-rw-r--r--fs/bfs/dir.c146
-rw-r--r--fs/bfs/file.c62
-rw-r--r--fs/bfs/inode.c127
4 files changed, 184 insertions, 155 deletions
diff --git a/fs/bfs/bfs.h b/fs/bfs/bfs.h
index 130f6c66c5b..ac7a8b1d6c3 100644
--- a/fs/bfs/bfs.h
+++ b/fs/bfs/bfs.h
@@ -14,8 +14,6 @@ struct bfs_sb_info {
unsigned long si_blocks;
unsigned long si_freeb;
unsigned long si_freei;
- unsigned long si_lf_ioff;
- unsigned long si_lf_sblk;
unsigned long si_lf_eblk;
unsigned long si_lasti;
unsigned long * si_imap;
@@ -39,7 +37,7 @@ static inline struct bfs_sb_info *BFS_SB(struct super_block *sb)
static inline struct bfs_inode_info *BFS_I(struct inode *inode)
{
- return list_entry(inode, struct bfs_inode_info, vfs_inode);
+ return container_of(inode, struct bfs_inode_info, vfs_inode);
}
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index 097f1497f74..1fd056d0fc3 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -21,29 +21,32 @@
#define dprintf(x...)
#endif
-static int bfs_add_entry(struct inode * dir, const unsigned char * name, int namelen, int ino);
-static struct buffer_head * bfs_find_entry(struct inode * dir,
- const unsigned char * name, int namelen, struct bfs_dirent ** res_dir);
+static int bfs_add_entry(struct inode *dir, const unsigned char *name,
+ int namelen, int ino);
+static struct buffer_head *bfs_find_entry(struct inode *dir,
+ const unsigned char *name, int namelen,
+ struct bfs_dirent **res_dir);
-static int bfs_readdir(struct file * f, void * dirent, filldir_t filldir)
+static int bfs_readdir(struct file *f, void *dirent, filldir_t filldir)
{
- struct inode * dir = f->f_path.dentry->d_inode;
- struct buffer_head * bh;
- struct bfs_dirent * de;
+ struct inode *dir = f->f_path.dentry->d_inode;
+ struct buffer_head *bh;
+ struct bfs_dirent *de;
unsigned int offset;
int block;
lock_kernel();
- if (f->f_pos & (BFS_DIRENT_SIZE-1)) {
- printf("Bad f_pos=%08lx for %s:%08lx\n", (unsigned long)f->f_pos,
- dir->i_sb->s_id, dir->i_ino);
+ if (f->f_pos & (BFS_DIRENT_SIZE - 1)) {
+ printf("Bad f_pos=%08lx for %s:%08lx\n",
+ (unsigned long)f->f_pos,
+ dir->i_sb->s_id, dir->i_ino);
unlock_kernel();
return -EBADF;
}
while (f->f_pos < dir->i_size) {
- offset = f->f_pos & (BFS_BSIZE-1);
+ offset = f->f_pos & (BFS_BSIZE - 1);
block = BFS_I(dir)->i_sblock + (f->f_pos >> BFS_BSIZE_BITS);
bh = sb_bread(dir->i_sb, block);
if (!bh) {
@@ -54,7 +57,9 @@ static int bfs_readdir(struct file * f, void * dirent, filldir_t filldir)
de = (struct bfs_dirent *)(bh->b_data + offset);
if (de->ino) {
int size = strnlen(de->name, BFS_NAMELEN);
- if (filldir(dirent, de->name, size, f->f_pos, le16_to_cpu(de->ino), DT_UNKNOWN) < 0) {
+ if (filldir(dirent, de->name, size, f->f_pos,
+ le16_to_cpu(de->ino),
+ DT_UNKNOWN) < 0) {
brelse(bh);
unlock_kernel();
return 0;
@@ -62,7 +67,7 @@ static int bfs_readdir(struct file * f, void * dirent, filldir_t filldir)
}
offset += BFS_DIRENT_SIZE;
f->f_pos += BFS_DIRENT_SIZE;
- } while (offset < BFS_BSIZE && f->f_pos < dir->i_size);
+ } while ((offset < BFS_BSIZE) && (f->f_pos < dir->i_size));
brelse(bh);
}
@@ -78,13 +83,13 @@ const struct file_operations bfs_dir_operations = {
extern void dump_imap(const char *, struct super_block *);
-static int bfs_create(struct inode * dir, struct dentry * dentry, int mode,
- struct nameidata *nd)
+static int bfs_create(struct inode *dir, struct dentry *dentry, int mode,
+ struct nameidata *nd)
{
int err;
- struct inode * inode;
- struct super_block * s = dir->i_sb;
- struct bfs_sb_info * info = BFS_SB(s);
+ struct inode *inode;
+ struct super_block *s = dir->i_sb;
+ struct bfs_sb_info *info = BFS_SB(s);
unsigned long ino;
inode = new_inode(s);
@@ -97,7 +102,7 @@ static int bfs_create(struct inode * dir, struct dentry * dentry, int mode,
iput(inode);
return -ENOSPC;
}
- set_bit(ino, info->si_imap);
+ set_bit(ino, info->si_imap);
info->si_freei--;
inode->i_uid = current->fsuid;
inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
@@ -113,9 +118,10 @@ static int bfs_create(struct inode * dir, struct dentry * dentry, int mode,
BFS_I(inode)->i_eblock = 0;
insert_inode_hash(inode);
mark_inode_dirty(inode);
- dump_imap("create",s);
+ dump_imap("create", s);
- err = bfs_add_entry(dir, dentry->d_name.name, dentry->d_name.len, inode->i_ino);
+ err = bfs_add_entry(dir, dentry->d_name.name, dentry->d_name.len,
+ inode->i_ino);
if (err) {
inode_dec_link_count(inode);
iput(inode);
@@ -127,11 +133,12 @@ static int bfs_create(struct inode * dir, struct dentry * dentry, int mode,
return 0;
}
-static struct dentry * bfs_lookup(struct inode * dir, struct dentry * dentry, struct nameidata *nd)
+static struct dentry *bfs_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *nd)
{
- struct inode * inode = NULL;
- struct buffer_head * bh;
- struct bfs_dirent * de;
+ struct inode *inode = NULL;
+ struct buffer_head *bh;
+ struct bfs_dirent *de;
if (dentry->d_name.len > BFS_NAMELEN)
return ERR_PTR(-ENAMETOOLONG);
@@ -152,13 +159,15 @@ static struct dentry * bfs_lookup(struct inode * dir, struct dentry * dentry, st
return NULL;
}
-static int bfs_link(struct dentry * old, struct inode * dir, struct dentry * new)
+static int bfs_link(struct dentry *old, struct inode *dir,
+ struct dentry *new)
{
- struct inode * inode = old->d_inode;
+ struct inode *inode = old->d_inode;
int err;
lock_kernel();
- err = bfs_add_entry(dir, new->d_name.name, new->d_name.len, inode->i_ino);
+ err = bfs_add_entry(dir, new->d_name.name, new->d_name.len,
+ inode->i_ino);
if (err) {
unlock_kernel();
return err;
@@ -172,23 +181,23 @@ static int bfs_link(struct dentry * old, struct inode * dir, struct dentry * new
return 0;
}
-
-static int bfs_unlink(struct inode * dir, struct dentry * dentry)
+static int bfs_unlink(struct inode *dir, struct dentry *dentry)
{
int error = -ENOENT;
- struct inode * inode;
- struct buffer_head * bh;
- struct bfs_dirent * de;
+ struct inode *inode;
+ struct buffer_head *bh;
+ struct bfs_dirent *de;
inode = dentry->d_inode;
lock_kernel();
bh = bfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len, &de);
- if (!bh || le16_to_cpu(de->ino) != inode->i_ino)
+ if (!bh || (le16_to_cpu(de->ino) != inode->i_ino))
goto out_brelse;
if (!inode->i_nlink) {
- printf("unlinking non-existent file %s:%lu (nlink=%d)\n", inode->i_sb->s_id,
- inode->i_ino, inode->i_nlink);
+ printf("unlinking non-existent file %s:%lu (nlink=%d)\n",
+ inode->i_sb->s_id, inode->i_ino,
+ inode->i_nlink);
inode->i_nlink = 1;
}
de->ino = 0;
@@ -205,12 +214,12 @@ out_brelse:
return error;
}
-static int bfs_rename(struct inode * old_dir, struct dentry * old_dentry,
- struct inode * new_dir, struct dentry * new_dentry)
+static int bfs_rename(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry)
{
- struct inode * old_inode, * new_inode;
- struct buffer_head * old_bh, * new_bh;
- struct bfs_dirent * old_de, * new_de;
+ struct inode *old_inode, *new_inode;
+ struct buffer_head *old_bh, *new_bh;
+ struct bfs_dirent *old_de, *new_de;
int error = -ENOENT;
old_bh = new_bh = NULL;
@@ -223,7 +232,7 @@ static int bfs_rename(struct inode * old_dir, struct dentry * old_dentry,
old_dentry->d_name.name,
old_dentry->d_name.len, &old_de);
- if (!old_bh || le16_to_cpu(old_de->ino) != old_inode->i_ino)
+ if (!old_bh || (le16_to_cpu(old_de->ino) != old_inode->i_ino))
goto end_rename;
error = -EPERM;
@@ -239,7 +248,8 @@ static int bfs_rename(struct inode * old_dir, struct dentry * old_dentry,
if (!new_bh) {
error = bfs_add_entry(new_dir,
new_dentry->d_name.name,
- new_dentry->d_name.len, old_inode->i_ino);
+ new_dentry->d_name.len,
+ old_inode->i_ino);
if (error)
goto end_rename;
}
@@ -268,11 +278,12 @@ const struct inode_operations bfs_dir_inops = {
.rename = bfs_rename,
};
-static int bfs_add_entry(struct inode * dir, const unsigned char * name, int namelen, int ino)
+static int bfs_add_entry(struct inode *dir, const unsigned char *name,
+ int namelen, int ino)
{
- struct buffer_head * bh;
- struct bfs_dirent * de;
- int block, sblock, eblock, off, eoff;
+ struct buffer_head *bh;
+ struct bfs_dirent *de;
+ int block, sblock, eblock, off, pos;
int i;
dprintf("name=%s, namelen=%d\n", name, namelen);
@@ -284,27 +295,24 @@ static int bfs_add_entry(struct inode * dir, const unsigned char * name, int nam
sblock = BFS_I(dir)->i_sblock;
eblock = BFS_I(dir)->i_eblock;
- eoff = dir->i_size % BFS_BSIZE;
- for (block=sblock; block<=eblock; block++) {
+ for (block = sblock; block <= eblock; block++) {
bh = sb_bread(dir->i_sb, block);
- if(!bh)
+ if (!bh)
return -ENOSPC;
- for (off=0; off<BFS_BSIZE; off+=BFS_DIRENT_SIZE) {
+ for (off = 0; off < BFS_BSIZE; off += BFS_DIRENT_SIZE) {
de = (struct bfs_dirent *)(bh->b_data + off);
- if (block==eblock && off>=eoff) {
- /* Do not read/interpret the garbage in the end of eblock. */
- de->ino = 0;
- }
if (!de->ino) {
- if ((block-sblock)*BFS_BSIZE + off >= dir->i_size) {
+ pos = (block - sblock) * BFS_BSIZE + off;
+ if (pos >= dir->i_size) {
dir->i_size += BFS_DIRENT_SIZE;
dir->i_ctime = CURRENT_TIME_SEC;
}
dir->i_mtime = CURRENT_TIME_SEC;
mark_inode_dirty(dir);
de->ino = cpu_to_le16((u16)ino);
- for (i=0; i<BFS_NAMELEN; i++)
- de->name[i] = (i < namelen) ? name[i] : 0;
+ for (i = 0; i < BFS_NAMELEN; i++)
+ de->name[i] =
+ (i < namelen) ? name[i] : 0;
mark_buffer_dirty(bh);
brelse(bh);
return 0;
@@ -315,25 +323,26 @@ static int bfs_add_entry(struct inode * dir, const unsigned char * name, int nam
return -ENOSPC;
}
-static inline int bfs_namecmp(int len, const unsigned char * name, const char * buffer)
+static inline int bfs_namecmp(int len, const unsigned char *name,
+ const char *buffer)
{
- if (len < BFS_NAMELEN && buffer[len])
+ if ((len < BFS_NAMELEN) && buffer[len])
return 0;
return !memcmp(name, buffer, len);
}
-static struct buffer_head * bfs_find_entry(struct inode * dir,
- const unsigned char * name, int namelen, struct bfs_dirent ** res_dir)
+static struct buffer_head *bfs_find_entry(struct inode *dir,
+ const unsigned char *name, int namelen,
+ struct bfs_dirent **res_dir)
{
- unsigned long block, offset;
- struct buffer_head * bh;
- struct bfs_dirent * de;
+ unsigned long block = 0, offset = 0;
+ struct buffer_head *bh = NULL;
+ struct bfs_dirent *de;
*res_dir = NULL;
if (namelen > BFS_NAMELEN)
return NULL;
- bh = NULL;
- block = offset = 0;
+
while (block * BFS_BSIZE + offset < dir->i_size) {
if (!bh) {
bh = sb_bread(dir->i_sb, BFS_I(dir)->i_sblock + block);
@@ -344,7 +353,8 @@ static struct buffer_head * bfs_find_entry(struct inode * dir,
}
de = (struct bfs_dirent *)(bh->b_data + offset);
offset += BFS_DIRENT_SIZE;
- if (le16_to_cpu(de->ino) && bfs_namecmp(namelen, name, de->name)) {
+ if (le16_to_cpu(de->ino) &&
+ bfs_namecmp(namelen, name, de->name)) {
*res_dir = de;
return bh;
}
diff --git a/fs/bfs/file.c b/fs/bfs/file.c
index 911b4ccf470..b11e63e8fbc 100644
--- a/fs/bfs/file.c
+++ b/fs/bfs/file.c
@@ -2,6 +2,11 @@
* fs/bfs/file.c
* BFS file operations.
* Copyright (C) 1999,2000 Tigran Aivazian <tigran@veritas.com>
+ *
+ * Make the file block allocation algorithm understand the size
+ * of the underlying block device.
+ * Copyright (C) 2007 Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
+ *
*/
#include <linux/fs.h>
@@ -27,7 +32,8 @@ const struct file_operations bfs_file_operations = {
.splice_read = generic_file_splice_read,
};
-static int bfs_move_block(unsigned long from, unsigned long to, struct super_block *sb)
+static int bfs_move_block(unsigned long from, unsigned long to,
+ struct super_block *sb)
{
struct buffer_head *bh, *new;
@@ -43,21 +49,22 @@ static int bfs_move_block(unsigned long from, unsigned long to, struct super_blo
}
static int bfs_move_blocks(struct super_block *sb, unsigned long start,
- unsigned long end, unsigned long where)
+ unsigned long end, unsigned long where)
{
unsigned long i;
dprintf("%08lx-%08lx->%08lx\n", start, end, where);
for (i = start; i <= end; i++)
if(bfs_move_block(i, where + i, sb)) {
- dprintf("failed to move block %08lx -> %08lx\n", i, where + i);
+ dprintf("failed to move block %08lx -> %08lx\n", i,
+ where + i);
return -EIO;
}
return 0;
}
-static int bfs_get_block(struct inode * inode, sector_t block,
- struct buffer_head * bh_result, int create)
+static int bfs_get_block(struct inode *inode, sector_t block,
+ struct buffer_head *bh_result, int create)
{
unsigned long phys;
int err;
@@ -66,9 +73,6 @@ static int bfs_get_block(struct inode * inode, sector_t block,
struct bfs_inode_info *bi = BFS_I(inode);
struct buffer_head *sbh = info->si_sbh;
- if (block > info->si_blocks)
- return -EIO;
-
phys = bi->i_sblock + block;
if (!create) {
if (phys <= bi->i_eblock) {
@@ -79,21 +83,29 @@ static int bfs_get_block(struct inode * inode, sector_t block,
return 0;
}
- /* if the file is not empty and the requested block is within the range
- of blocks allocated for this file, we can grant it */
- if (inode->i_size && phys <= bi->i_eblock) {
+ /*
+ * If the file is not empty and the requested block is within the
+ * range of blocks allocated for this file, we can grant it.
+ */
+ if (bi->i_sblock && (phys <= bi->i_eblock)) {
dprintf("c=%d, b=%08lx, phys=%08lx (interim block granted)\n",
create, (unsigned long)block, phys);
map_bh(bh_result, sb, phys);
return 0;
}
- /* the rest has to be protected against itself */
+ /* The file will be extended, so let's see if there is enough space. */
+ if (phys >= info->si_blocks)
+ return -ENOSPC;
+
+ /* The rest has to be protected against itself. */
lock_kernel();
- /* if the last data block for this file is the last allocated
- block, we can extend the file trivially, without moving it
- anywhere */
+ /*
+ * If the last data block for this file is the last allocated
+ * block, we can extend the file trivially, without moving it
+ * anywhere.
+ */
if (bi->i_eblock == info->si_lf_eblk) {
dprintf("c=%d, b=%08lx, phys=%08lx (simple extension)\n",
create, (unsigned long)block, phys);
@@ -106,13 +118,19 @@ static int bfs_get_block(struct inode * inode, sector_t block,
goto out;
}
- /* Ok, we have to move this entire file to the next free block */
+ /* Ok, we have to move this entire file to the next free block. */
phys = info->si_lf_eblk + 1;
- if (bi->i_sblock) { /* if data starts on block 0 then there is no data */
+ if (phys + block >= info->si_blocks) {
+ err = -ENOSPC;
+ goto out;
+ }
+
+ if (bi->i_sblock) {
err = bfs_move_blocks(inode->i_sb, bi->i_sblock,
- bi->i_eblock, phys);
+ bi->i_eblock, phys);
if (err) {
- dprintf("failed to move ino=%08lx -> fs corruption\n", inode->i_ino);
+ dprintf("failed to move ino=%08lx -> fs corruption\n",
+ inode->i_ino);
goto out;
}
} else
@@ -124,8 +142,10 @@ static int bfs_get_block(struct inode * inode, sector_t block,
phys += block;
info->si_lf_eblk = bi->i_eblock = phys;
- /* this assumes nothing can write the inode back while we are here
- * and thus update inode->i_blocks! (XXX)*/
+ /*
+ * This assumes nothing can write the inode back while we are here
+ * and thus update inode->i_blocks! (XXX)
+ */
info->si_freeb -= bi->i_eblock - bi->i_sblock + 1 - inode->i_blocks;
mark_inode_dirty(inode);
mark_buffer_dirty(sbh);
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 7bd9c2bbe6e..294c41baef6 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -30,25 +30,26 @@ MODULE_LICENSE("GPL");
#define dprintf(x...)
#endif
-void dump_imap(const char *prefix, struct super_block * s);
+void dump_imap(const char *prefix, struct super_block *s);
-static void bfs_read_inode(struct inode * inode)
+static void bfs_read_inode(struct inode *inode)
{
unsigned long ino = inode->i_ino;
- struct bfs_inode * di;
- struct buffer_head * bh;
+ struct bfs_inode *di;
+ struct buffer_head *bh;
int block, off;
- if (ino < BFS_ROOT_INO || ino > BFS_SB(inode->i_sb)->si_lasti) {
+ if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(inode->i_sb)->si_lasti)) {
printf("Bad inode number %s:%08lx\n", inode->i_sb->s_id, ino);
make_bad_inode(inode);
return;
}
- block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
+ block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
bh = sb_bread(inode->i_sb, block);
if (!bh) {
- printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id, ino);
+ printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id,
+ ino);
make_bad_inode(inode);
return;
}
@@ -56,7 +57,7 @@ static void bfs_read_inode(struct inode * inode)
off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
di = (struct bfs_inode *)bh->b_data + off;
- inode->i_mode = 0x0000FFFF & le32_to_cpu(di->i_mode);
+ inode->i_mode = 0x0000FFFF & le32_to_cpu(di->i_mode);
if (le32_to_cpu(di->i_vtype) == BFS_VDIR) {
inode->i_mode |= S_IFDIR;
inode->i_op = &bfs_dir_inops;
@@ -70,48 +71,48 @@ static void bfs_read_inode(struct inode * inode)
BFS_I(inode)->i_sblock = le32_to_cpu(di->i_sblock);
BFS_I(inode)->i_eblock = le32_to_cpu(di->i_eblock);
+ BFS_I(inode)->i_dsk_ino = le16_to_cpu(di->i_ino);
inode->i_uid = le32_to_cpu(di->i_uid);
inode->i_gid = le32_to_cpu(di->i_gid);
inode->i_nlink = le32_to_cpu(di->i_nlink);
inode->i_size = BFS_FILESIZE(di);
inode->i_blocks = BFS_FILEBLOCKS(di);
- if (inode->i_size || inode->i_blocks) dprintf("Registered inode with %lld size, %ld blocks\n", inode->i_size, inode->i_blocks);
inode->i_atime.tv_sec = le32_to_cpu(di->i_atime);
inode->i_mtime.tv_sec = le32_to_cpu(di->i_mtime);
inode->i_ctime.tv_sec = le32_to_cpu(di->i_ctime);
inode->i_atime.tv_nsec = 0;
inode->i_mtime.tv_nsec = 0;
inode->i_ctime.tv_nsec = 0;
- BFS_I(inode)->i_dsk_ino = le16_to_cpu(di->i_ino); /* can be 0 so we store a copy */
brelse(bh);
}
-static int bfs_write_inode(struct inode * inode, int unused)
+static int bfs_write_inode(struct inode *inode, int unused)
{
unsigned int ino = (u16)inode->i_ino;
unsigned long i_sblock;
- struct bfs_inode * di;
- struct buffer_head * bh;
+ struct bfs_inode *di;
+ struct buffer_head *bh;
int block, off;
dprintf("ino=%08x\n", ino);
- if (ino < BFS_ROOT_INO || ino > BFS_SB(inode->i_sb)->si_lasti) {
+ if ((ino < BFS_ROOT_INO) || (ino > BFS_SB(inode->i_sb)->si_lasti)) {
printf("Bad inode number %s:%08x\n", inode->i_sb->s_id, ino);
return -EIO;
}
lock_kernel();
- block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
+ block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
bh = sb_bread(inode->i_sb, block);
if (!bh) {
- printf("Unable to read inode %s:%08x\n", inode->i_sb->s_id, ino);
+ printf("Unable to read inode %s:%08x\n",
+ inode->i_sb->s_id, ino);
unlock_kernel();
return -EIO;
}
- off = (ino - BFS_ROOT_INO)%BFS_INODES_PER_BLOCK;
+ off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
di = (struct bfs_inode *)bh->b_data + off;
if (ino == BFS_ROOT_INO)
@@ -133,27 +134,26 @@ static int bfs_write_inode(struct inode * inode, int unused)
di->i_eoffset = cpu_to_le32(i_sblock * BFS_BSIZE + inode->i_size - 1);
mark_buffer_dirty(bh);
- dprintf("Written ino=%d into %d:%d\n",le16_to_cpu(di->i_ino),block,off);
brelse(bh);
unlock_kernel();
return 0;
}
-static void bfs_delete_inode(struct inode * inode)
+static void bfs_delete_inode(struct inode *inode)
{
unsigned long ino = inode->i_ino;
- struct bfs_inode * di;
- struct buffer_head * bh;
+ struct bfs_inode *di;
+ struct buffer_head *bh;
int block, off;
- struct super_block * s = inode->i_sb;
- struct bfs_sb_info * info = BFS_SB(s);
- struct bfs_inode_info * bi = BFS_I(inode);
+ struct super_block *s = inode->i_sb;
+ struct bfs_sb_info *info = BFS_SB(s);
+ struct bfs_inode_info *bi = BFS_I(inode);
dprintf("ino=%08lx\n", ino);
truncate_inode_pages(&inode->i_data, 0);
- if (ino < BFS_ROOT_INO || ino > info->si_lasti) {
+ if ((ino < BFS_ROOT_INO) || (ino > info->si_lasti)) {
printf("invalid ino=%08lx\n", ino);
return;
}
@@ -162,31 +162,35 @@ static void bfs_delete_inode(struct inode * inode)
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
lock_kernel();
mark_inode_dirty(inode);
- block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
+
+ block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
bh = sb_bread(s, block);
if (!bh) {
- printf("Unable to read inode %s:%08lx\n", inode->i_sb->s_id, ino);
+ printf("Unable to read inode %s:%08lx\n",
+ inode->i_sb->s_id, ino);
unlock_kernel();
return;
}
- off = (ino - BFS_ROOT_INO)%BFS_INODES_PER_BLOCK;
- di = (struct bfs_inode *) bh->b_data + off;
+ off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
+ di = (struct bfs_inode *)bh->b_data + off;
+ memset((void *)di, 0, sizeof(struct bfs_inode));
+ mark_buffer_dirty(bh);
+ brelse(bh);
+
if (bi->i_dsk_ino) {
- info->si_freeb += 1 + bi->i_eblock - bi->i_sblock;
+ info->si_freeb += BFS_FILEBLOCKS(bi);
info->si_freei++;
clear_bit(ino, info->si_imap);
dump_imap("delete_inode", s);
}
- di->i_ino = 0;
- di->i_sblock = 0;
- mark_buffer_dirty(bh);
- brelse(bh);
- /* if this was the last file, make the previous
- block "last files last block" even if there is no real file there,
- saves us 1 gap */
- if (info->si_lf_eblk == BFS_I(inode)->i_eblock) {
- info->si_lf_eblk = BFS_I(inode)->i_sblock - 1;
+ /*
+ * If this was the last file, make the previous block
+ * "last block of the last file" even if there is no
+ * real file there, saves us 1 gap.
+ */
+ if (info->si_lf_eblk == bi->i_eblock) {
+ info->si_lf_eblk = bi->i_sblock - 1;
mark_buffer_dirty(info->si_sbh);
}
unlock_kernel();
@@ -228,7 +232,7 @@ static void bfs_write_super(struct super_block *s)
unlock_kernel();
}
-static struct kmem_cache * bfs_inode_cachep;
+static struct kmem_cache *bfs_inode_cachep;
static struct inode *bfs_alloc_inode(struct super_block *sb)
{
@@ -279,7 +283,7 @@ static const struct super_operations bfs_sops = {
.statfs = bfs_statfs,
};
-void dump_imap(const char *prefix, struct super_block * s)
+void dump_imap(const char *prefix, struct super_block *s)
{
#ifdef DEBUG
int i;
@@ -287,25 +291,26 @@ void dump_imap(const char *prefix, struct super_block * s)
if (!tmpbuf)
return;
- for (i=BFS_SB(s)->si_lasti; i>=0; i--) {
- if (i > PAGE_SIZE-100) break;
+ for (i = BFS_SB(s)->si_lasti; i >= 0; i--) {
+ if (i > PAGE_SIZE - 100) break;
if (test_bit(i, BFS_SB(s)->si_imap))
strcat(tmpbuf, "1");
else
strcat(tmpbuf, "0");
}
- printk(KERN_ERR "BFS-fs: %s: lasti=%08lx <%s>\n", prefix, BFS_SB(s)->si_lasti, tmpbuf);
+ printf("BFS-fs: %s: lasti=%08lx <%s>\n",
+ prefix, BFS_SB(s)->si_lasti, tmpbuf);
free_page((unsigned long)tmpbuf);
#endif
}
static int bfs_fill_super(struct super_block *s, void *data, int silent)
{
- struct buffer_head * bh;
- struct bfs_super_block * bfs_sb;
- struct inode * inode;
+ struct buffer_head *bh;
+ struct bfs_super_block *bfs_sb;
+ struct inode *inode;
unsigned i, imap_len;
- struct bfs_sb_info * info;
+ struct bfs_sb_info *info;
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
@@ -329,14 +334,14 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
s->s_magic = BFS_MAGIC;
info->si_sbh = bh;
- info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE)/sizeof(struct bfs_inode)
- + BFS_ROOT_INO - 1;
-
- imap_len = info->si_lasti/8 + 1;
+ info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE) /
+ sizeof(struct bfs_inode)
+ + BFS_ROOT_INO - 1;
+ imap_len = (info->si_lasti / 8) + 1;
info->si_imap = kzalloc(imap_len, GFP_KERNEL);
if (!info->si_imap)
goto out;
- for (i=0; i<BFS_ROOT_INO; i++)
+ for (i = 0; i < BFS_ROOT_INO; i++)
set_bit(i, info->si_imap);
s->s_op = &bfs_sops;
@@ -352,16 +357,15 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
goto out;
}
- info->si_blocks = (le32_to_cpu(bfs_sb->s_end) + 1)>>BFS_BSIZE_BITS; /* for statfs(2) */
- info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1 - le32_to_cpu(bfs_sb->s_start))>>BFS_BSIZE_BITS;
+ info->si_blocks = (le32_to_cpu(bfs_sb->s_end) + 1) >> BFS_BSIZE_BITS;
+ info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1
+ - le32_to_cpu(bfs_sb->s_start)) >> BFS_BSIZE_BITS;
info->si_freei = 0;
info->si_lf_eblk = 0;
- info->si_lf_sblk = 0;
- info->si_lf_ioff = 0;
bh = NULL;
- for (i=BFS_ROOT_INO; i<=info->si_lasti; i++) {
+ for (i = BFS_ROOT_INO; i <= info->si_lasti; i++) {
struct bfs_inode *di;
- int block = (i - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
+ int block = (i - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
int off = (i - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
unsigned long sblock, eblock;
@@ -384,11 +388,8 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
sblock = le32_to_cpu(di->i_sblock);
eblock = le32_to_cpu(di->i_eblock);
- if (eblock > info->si_lf_eblk) {
+ if (eblock > info->si_lf_eblk)
info->si_lf_eblk = eblock;
- info->si_lf_sblk = sblock;
- info->si_lf_ioff = BFS_INO2OFF(i);
- }
}
brelse(bh);
if (!(s->s_flags & MS_RDONLY)) {
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-03 02:44:07 +0000