diff options
| -rw-r--r-- | fs/bad_inode.c | 330 |
1 files changed, 289 insertions, 41 deletions
diff --git a/fs/bad_inode.c b/fs/bad_inode.c index 34e6d7b220c..869f5193ecc 100644 --- a/fs/bad_inode.c +++ b/fs/bad_inode.c @@ -14,59 +14,307 @@ #include <linux/time.h> #include <linux/smp_lock.h> #include <linux/namei.h> +#include <linux/poll.h> -static int return_EIO(void) + +static loff_t bad_file_llseek(struct file *file, loff_t offset, int origin) +{ + return -EIO; +} + +static ssize_t bad_file_read(struct file *filp, char __user *buf, + size_t size, loff_t *ppos) +{ + return -EIO; +} + +static ssize_t bad_file_write(struct file *filp, const char __user *buf, + size_t siz, loff_t *ppos) +{ + return -EIO; +} + +static ssize_t bad_file_aio_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) +{ + return -EIO; +} + +static ssize_t bad_file_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) +{ + return -EIO; +} + +static int bad_file_readdir(struct file *filp, void *dirent, filldir_t filldir) +{ + return -EIO; +} + +static unsigned int bad_file_poll(struct file *filp, poll_table *wait) +{ + return POLLERR; +} + +static int bad_file_ioctl (struct inode *inode, struct file *filp, + unsigned int cmd, unsigned long arg) +{ + return -EIO; +} + +static long bad_file_unlocked_ioctl(struct file *file, unsigned cmd, + unsigned long arg) +{ + return -EIO; +} + +static long bad_file_compat_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + return -EIO; +} + +static int bad_file_mmap(struct file *file, struct vm_area_struct *vma) +{ + return -EIO; +} + +static int bad_file_open(struct inode *inode, struct file *filp) +{ + return -EIO; +} + +static int bad_file_flush(struct file *file, fl_owner_t id) +{ + return -EIO; +} + +static int bad_file_release(struct inode *inode, struct file *filp) +{ + return -EIO; +} + +static int bad_file_fsync(struct file *file, struct dentry *dentry, + int datasync) +{ + return -EIO; +} + +static int bad_file_aio_fsync(struct kiocb *iocb, int datasync) +{ + return -EIO; +} + +static int bad_file_fasync(int fd, struct file *filp, int on) +{ + return -EIO; +} + +static int bad_file_lock(struct file *file, int cmd, struct file_lock *fl) +{ + return -EIO; +} + +static ssize_t bad_file_sendfile(struct file *in_file, loff_t *ppos, + size_t count, read_actor_t actor, void *target) +{ + return -EIO; +} + +static ssize_t bad_file_sendpage(struct file *file, struct page *page, + int off, size_t len, loff_t *pos, int more) +{ + return -EIO; +} + +static unsigned long bad_file_get_unmapped_area(struct file *file, + unsigned long addr, unsigned long len, + unsigned long pgoff, unsigned long flags) +{ + return -EIO; +} + +static int bad_file_check_flags(int flags) { return -EIO; } -#define EIO_ERROR ((void *) (return_EIO)) +static int bad_file_dir_notify(struct file *file, unsigned long arg) +{ + return -EIO; +} + +static int bad_file_flock(struct file *filp, int cmd, struct file_lock *fl) +{ + return -EIO; +} + +static ssize_t bad_file_splice_write(struct pipe_inode_info *pipe, + struct file *out, loff_t *ppos, size_t len, + unsigned int flags) +{ + return -EIO; +} + +static ssize_t bad_file_splice_read(struct file *in, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) +{ + return -EIO; +} static const struct file_operations bad_file_ops = { - .llseek = EIO_ERROR, - .aio_read = EIO_ERROR, - .read = EIO_ERROR, - .write = EIO_ERROR, - .aio_write = EIO_ERROR, - .readdir = EIO_ERROR, - .poll = EIO_ERROR, - .ioctl = EIO_ERROR, - .mmap = EIO_ERROR, - .open = EIO_ERROR, - .flush = EIO_ERROR, - .release = EIO_ERROR, - .fsync = EIO_ERROR, - .aio_fsync = EIO_ERROR, - .fasync = EIO_ERROR, - .lock = EIO_ERROR, - .sendfile = EIO_ERROR, - .sendpage = EIO_ERROR, - .get_unmapped_area = EIO_ERROR, + .llseek = bad_file_llseek, + .read = bad_file_read, + .write = bad_file_write, + .aio_read = bad_file_aio_read, + .aio_write = bad_file_aio_write, + .readdir = bad_file_readdir, + .poll = bad_file_poll, + .ioctl = bad_file_ioctl, + .unlocked_ioctl = bad_file_unlocked_ioctl, + .compat_ioctl = bad_file_compat_ioctl, + .mmap = bad_file_mmap, + .open = bad_file_open, + .flush = bad_file_flush, + .release = bad_file_release, + .fsync = bad_file_fsync, + .aio_fsync = bad_file_aio_fsync, + .fasync = bad_file_fasync, + .lock = bad_file_lock, + .sendfile = bad_file_sendfile, + .sendpage = bad_file_sendpage, + .get_unmapped_area = bad_file_get_unmapped_area, + .check_flags = bad_file_check_flags, + .dir_notify = bad_file_dir_notify, + .flock = bad_file_flock, + .splice_write = bad_file_splice_write, + .splice_read = bad_file_splice_read, }; +static int bad_inode_create (struct inode *dir, struct dentry *dentry, + int mode, struct nameidata *nd) +{ + return -EIO; +} + +static struct dentry *bad_inode_lookup(struct inode *dir, + struct dentry *dentry, struct nameidata *nd) +{ + return ERR_PTR(-EIO); +} + +static int bad_inode_link (struct dentry *old_dentry, struct inode *dir, + struct dentry *dentry) +{ + return -EIO; +} + +static int bad_inode_unlink(struct inode *dir, struct dentry *dentry) +{ + return -EIO; +} + +static int bad_inode_symlink (struct inode *dir, struct dentry *dentry, + const char *symname) +{ + return -EIO; +} + +static int bad_inode_mkdir(struct inode *dir, struct dentry *dentry, + int mode) +{ + return -EIO; +} + +static int bad_inode_rmdir (struct inode *dir, struct dentry *dentry) +{ + return -EIO; +} + +static int bad_inode_mknod (struct inode *dir, struct dentry *dentry, + int mode, dev_t rdev) +{ + return -EIO; +} + +static int bad_inode_rename (struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry) +{ + return -EIO; +} + +static int bad_inode_readlink(struct dentry *dentry, char __user *buffer, + int buflen) +{ + return -EIO; +} + +static int bad_inode_permission(struct inode *inode, int mask, + struct nameidata *nd) +{ + return -EIO; +} + +static int bad_inode_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) +{ + return -EIO; +} + +static int bad_inode_setattr(struct dentry *direntry, struct iattr *attrs) +{ + return -EIO; +} + +static int bad_inode_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + return -EIO; +} + +static ssize_t bad_inode_getxattr(struct dentry *dentry, const char *name, + void *buffer, size_t size) +{ + return -EIO; +} + +static ssize_t bad_inode_listxattr(struct dentry *dentry, char *buffer, + size_t buffer_size) +{ + return -EIO; +} + +static int bad_inode_removexattr(struct dentry *dentry, const char *name) +{ + return -EIO; +} + static struct inode_operations bad_inode_ops = { - .create = EIO_ERROR, - .lookup = EIO_ERROR, - .link = EIO_ERROR, - .unlink = EIO_ERROR, - .symlink = EIO_ERROR, - .mkdir = EIO_ERROR, - .rmdir = EIO_ERROR, - .mknod = EIO_ERROR, - .rename = EIO_ERROR, - .readlink = EIO_ERROR, + .create = bad_inode_create, + .lookup = bad_inode_lookup, + .link = bad_inode_link, + .unlink = bad_inode_unlink, + .symlink = bad_inode_symlink, + .mkdir = bad_inode_mkdir, + .rmdir = bad_inode_rmdir, + .mknod = bad_inode_mknod, + .rename = bad_inode_rename, + .readlink = bad_inode_readlink, /* follow_link must be no-op, otherwise unmounting this inode won't work */ - .truncate = EIO_ERROR, - .permission = EIO_ERROR, - .getattr = EIO_ERROR, - .setattr = EIO_ERROR, - .setxattr = EIO_ERROR, - .getxattr = EIO_ERROR, - .listxattr = EIO_ERROR, - .removexattr = EIO_ERROR, + /* put_link returns void */ + /* truncate returns void */ + .permission = bad_inode_permission, + .getattr = bad_inode_getattr, + .setattr = bad_inode_setattr, + .setxattr = bad_inode_setxattr, + .getxattr = bad_inode_getxattr, + .listxattr = bad_inode_listxattr, + .removexattr = bad_inode_removexattr, + /* truncate_range returns void */ }; @@ -88,7 +336,7 @@ static struct inode_operations bad_inode_ops = * on it to fail from this point on. */ -void make_bad_inode(struct inode * inode) +void make_bad_inode(struct inode *inode) { remove_inode_hash(inode); @@ -113,7 +361,7 @@ EXPORT_SYMBOL(make_bad_inode); * Returns true if the inode in question has been marked as bad. */ -int is_bad_inode(struct inode * inode) +int is_bad_inode(struct inode *inode) { return (inode->i_op == &bad_inode_ops); } |