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don't bother with most of the bad_file_ops methods

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Only ->open() should be there (always failing, of course).  We never
replace ->f_op of an already opened struct file, so there's no way
for any of those methods to be called.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-02-04 16:02:09 -05:00
parent 28444a2bde
commit db671a8ecd
1 changed files with 0 additions and 147 deletions
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147
fs/bad_inode.c
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@ -15,161 +15,14 @@
#include <linux/namei.h>
#include <linux/poll.h>
static loff_t bad_file_llseek(struct file *file, loff_t offset, int whence)
{
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 *file, struct dir_context *ctx)
{
return -EIO;
}
static unsigned int bad_file_poll(struct file *filp, poll_table *wait)
{
return POLLERR;
}
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, loff_t start, loff_t end,
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_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;
}
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 = bad_file_llseek,
.read = bad_file_read,
.write = bad_file_write,
.aio_read = bad_file_aio_read,
.aio_write = bad_file_aio_write,
.iterate = bad_file_readdir,
.poll = bad_file_poll,
.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,
.sendpage = bad_file_sendpage,
.get_unmapped_area = bad_file_get_unmapped_area,
.check_flags = bad_file_check_flags,
.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,