diff options
Diffstat (limited to 'fs/bfs')
| -rw-r--r-- | fs/bfs/Kconfig | 4 | ||||
| -rw-r--r-- | fs/bfs/dir.c | 37 | ||||
| -rw-r--r-- | fs/bfs/file.c | 23 | ||||
| -rw-r--r-- | fs/bfs/inode.c | 7 |
4 files changed, 35 insertions, 36 deletions
diff --git a/fs/bfs/Kconfig b/fs/bfs/Kconfig index c2336c62024..3728a6479c6 100644 --- a/fs/bfs/Kconfig +++ b/fs/bfs/Kconfig @@ -1,6 +1,6 @@ config BFS_FS - tristate "BFS file system support (EXPERIMENTAL)" - depends on BLOCK && EXPERIMENTAL + tristate "BFS file system support" + depends on BLOCK help Boot File System (BFS) is a file system used under SCO UnixWare to allow the bootloader access to the kernel image and other important diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c index 2785ef91191..a399e6d9dc7 100644 --- a/fs/bfs/dir.c +++ b/fs/bfs/dir.c @@ -26,58 +26,51 @@ 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, struct dir_context *ctx) { - struct inode *dir = f->f_path.dentry->d_inode; + struct inode *dir = file_inode(f); struct buffer_head *bh; struct bfs_dirent *de; - struct bfs_sb_info *info = BFS_SB(dir->i_sb); unsigned int offset; int block; - mutex_lock(&info->bfs_lock); - - if (f->f_pos & (BFS_DIRENT_SIZE - 1)) { + if (ctx->pos & (BFS_DIRENT_SIZE - 1)) { printf("Bad f_pos=%08lx for %s:%08lx\n", - (unsigned long)f->f_pos, + (unsigned long)ctx->pos, dir->i_sb->s_id, dir->i_ino); - mutex_unlock(&info->bfs_lock); - return -EBADF; + return -EINVAL; } - while (f->f_pos < dir->i_size) { - offset = f->f_pos & (BFS_BSIZE - 1); - block = BFS_I(dir)->i_sblock + (f->f_pos >> BFS_BSIZE_BITS); + while (ctx->pos < dir->i_size) { + offset = ctx->pos & (BFS_BSIZE - 1); + block = BFS_I(dir)->i_sblock + (ctx->pos >> BFS_BSIZE_BITS); bh = sb_bread(dir->i_sb, block); if (!bh) { - f->f_pos += BFS_BSIZE - offset; + ctx->pos += BFS_BSIZE - offset; continue; } do { 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, + if (!dir_emit(ctx, de->name, size, le16_to_cpu(de->ino), - DT_UNKNOWN) < 0) { + DT_UNKNOWN)) { brelse(bh); - mutex_unlock(&info->bfs_lock); return 0; } } offset += BFS_DIRENT_SIZE; - f->f_pos += BFS_DIRENT_SIZE; - } while ((offset < BFS_BSIZE) && (f->f_pos < dir->i_size)); + ctx->pos += BFS_DIRENT_SIZE; + } while ((offset < BFS_BSIZE) && (ctx->pos < dir->i_size)); brelse(bh); } - - mutex_unlock(&info->bfs_lock); - return 0; + return 0; } const struct file_operations bfs_dir_operations = { .read = generic_read_dir, - .readdir = bfs_readdir, + .iterate = bfs_readdir, .fsync = generic_file_fsync, .llseek = generic_file_llseek, }; diff --git a/fs/bfs/file.c b/fs/bfs/file.c index f20e8a71062..e7f88ace1a2 100644 --- a/fs/bfs/file.c +++ b/fs/bfs/file.c @@ -23,10 +23,10 @@ const struct file_operations bfs_file_operations = { .llseek = generic_file_llseek, - .read = do_sync_read, - .aio_read = generic_file_aio_read, - .write = do_sync_write, - .aio_write = generic_file_aio_write, + .read = new_sync_read, + .read_iter = generic_file_read_iter, + .write = new_sync_write, + .write_iter = generic_file_write_iter, .mmap = generic_file_mmap, .splice_read = generic_file_splice_read, }; @@ -161,6 +161,14 @@ static int bfs_readpage(struct file *file, struct page *page) return block_read_full_page(page, bfs_get_block); } +static void bfs_write_failed(struct address_space *mapping, loff_t to) +{ + struct inode *inode = mapping->host; + + if (to > inode->i_size) + truncate_pagecache(inode, inode->i_size); +} + static int bfs_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata) @@ -169,11 +177,8 @@ static int bfs_write_begin(struct file *file, struct address_space *mapping, ret = block_write_begin(mapping, pos, len, flags, pagep, bfs_get_block); - if (unlikely(ret)) { - loff_t isize = mapping->host->i_size; - if (pos + len > isize) - vmtruncate(mapping->host, isize); - } + if (unlikely(ret)) + bfs_write_failed(mapping, pos + len); return ret; } diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index 737aaa3f709..7041ac35ace 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -40,7 +40,7 @@ struct inode *bfs_iget(struct super_block *sb, unsigned long ino) int block, off; inode = iget_locked(sb, ino); - if (IS_ERR(inode)) + if (!inode) return ERR_PTR(-ENOMEM); if (!(inode->i_state & I_NEW)) return inode; @@ -172,7 +172,7 @@ static void bfs_evict_inode(struct inode *inode) dprintf("ino=%08lx\n", ino); - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); invalidate_inode_buffers(inode); clear_inode(inode); @@ -266,7 +266,7 @@ static void init_once(void *foo) inode_init_once(&bi->vfs_inode); } -static int init_inodecache(void) +static int __init init_inodecache(void) { bfs_inode_cachep = kmem_cache_create("bfs_inode_cache", sizeof(struct bfs_inode_info), @@ -473,6 +473,7 @@ static struct file_system_type bfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("bfs"); static int __init init_bfs_fs(void) { |