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authorArnd Bergmann <arnd@arndb.de>2010-07-04 00:15:10 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2010-08-14 00:24:24 +0200
commitb19dd42faf413b4705d4adb38521e82d73fa4249 (patch)
treefbfdea065c3772b2de2c37238af6afcad2e42934 /fs
parentc6d7ba8b12636923f3e30997dec69bed58e176b6 (diff)
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bkl: Remove locked .ioctl file operation
The last user is gone, so we can safely remove this Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: John Kacur <jkacur@redhat.com> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/bad_inode.c7
-rw-r--r--fs/compat_ioctl.c3
-rw-r--r--fs/ioctl.c18
-rw-r--r--fs/proc/inode.c17
4 files changed, 9 insertions, 36 deletions
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index 52e59bf4aa5f..f024d8aaddef 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -55,12 +55,6 @@ 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)
{
@@ -159,7 +153,6 @@ static const struct file_operations bad_file_ops =
.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,
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 70227e0dc01d..03e59aa318eb 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1699,8 +1699,7 @@ asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd,
goto out_fput;
}
- if (!filp->f_op ||
- (!filp->f_op->ioctl && !filp->f_op->unlocked_ioctl))
+ if (!filp->f_op || !filp->f_op->unlocked_ioctl)
goto do_ioctl;
break;
}
diff --git a/fs/ioctl.c b/fs/ioctl.c
index 2d140a713861..f855ea4fc888 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -29,7 +29,6 @@
* @arg: command-specific argument for ioctl
*
* Invokes filesystem specific ->unlocked_ioctl, if one exists; otherwise
- * invokes filesystem specific ->ioctl method. If neither method exists,
* returns -ENOTTY.
*
* Returns 0 on success, -errno on error.
@@ -39,21 +38,12 @@ static long vfs_ioctl(struct file *filp, unsigned int cmd,
{
int error = -ENOTTY;
- if (!filp->f_op)
+ if (!filp->f_op || !filp->f_op->unlocked_ioctl)
goto out;
- if (filp->f_op->unlocked_ioctl) {
- error = filp->f_op->unlocked_ioctl(filp, cmd, arg);
- if (error == -ENOIOCTLCMD)
- error = -EINVAL;
- goto out;
- } else if (filp->f_op->ioctl) {
- lock_kernel();
- error = filp->f_op->ioctl(filp->f_path.dentry->d_inode,
- filp, cmd, arg);
- unlock_kernel();
- }
-
+ error = filp->f_op->unlocked_ioctl(filp, cmd, arg);
+ if (error == -ENOIOCTLCMD)
+ error = -EINVAL;
out:
return error;
}
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 23561cda7245..9c2b5f484879 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -214,8 +214,7 @@ static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigne
{
struct proc_dir_entry *pde = PDE(file->f_path.dentry->d_inode);
long rv = -ENOTTY;
- long (*unlocked_ioctl)(struct file *, unsigned int, unsigned long);
- int (*ioctl)(struct inode *, struct file *, unsigned int, unsigned long);
+ long (*ioctl)(struct file *, unsigned int, unsigned long);
spin_lock(&pde->pde_unload_lock);
if (!pde->proc_fops) {
@@ -223,19 +222,11 @@ static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigne
return rv;
}
pde->pde_users++;
- unlocked_ioctl = pde->proc_fops->unlocked_ioctl;
- ioctl = pde->proc_fops->ioctl;
+ ioctl = pde->proc_fops->unlocked_ioctl;
spin_unlock(&pde->pde_unload_lock);
- if (unlocked_ioctl) {
- rv = unlocked_ioctl(file, cmd, arg);
- if (rv == -ENOIOCTLCMD)
- rv = -EINVAL;
- } else if (ioctl) {
- WARN_ONCE(1, "Procfs ioctl handlers must use unlocked_ioctl, "
- "%pf will be called without the Bkl held\n", ioctl);
- rv = ioctl(file->f_path.dentry->d_inode, file, cmd, arg);
- }
+ if (ioctl)
+ rv = ioctl(file, cmd, arg);
pde_users_dec(pde);
return rv;