adulau/aha
1
0
Fork 0
mirror of https://github.com/adulau/aha.git synced 2024-12-28 11:46:19 +00:00
Code Issues Projects Releases Packages Wiki Activity

VFS: apply coding standards to fs/ioctl.c

Browse source 
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Erez Zadok 2008-02-07 00:13:23 -08:00 committed by Linus Torvalds
parent 4aa323bd83
commit c9845ff1df
1 changed files with 83 additions and 79 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

162
fs/ioctl.c
View file

@ -12,8 +12,8 @@
#include <linux/fs.h> #include <linux/fs.h>
#include <linux/security.h> #include <linux/security.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/uaccess.h>
#include <asm/uaccess.h>
#include <asm/ioctls.h> #include <asm/ioctls.h>
static long do_ioctl(struct file *filp, unsigned int cmd, static long do_ioctl(struct file *filp, unsigned int cmd,
@ -45,31 +45,31 @@ static int file_ioctl(struct file *filp, unsigned int cmd,
{ {
int error; int error;
int block; int block;
struct inode * inode = filp->f_path.dentry->d_inode; struct inode *inode = filp->f_path.dentry->d_inode;
int __user *p = (int __user *)arg; int __user *p = (int __user *)arg;
switch (cmd) { switch (cmd) {
case FIBMAP: case FIBMAP:
{ {
struct address_space *mapping = filp->f_mapping; struct address_space *mapping = filp->f_mapping;
int res; int res;
/* do we support this mess? */ /* do we support this mess? */
if (!mapping->a_ops->bmap) if (!mapping->a_ops->bmap)
return -EINVAL; return -EINVAL;
if (!capable(CAP_SYS_RAWIO)) if (!capable(CAP_SYS_RAWIO))
return -EPERM; return -EPERM;
if ((error = get_user(block, p)) != 0) error = get_user(block, p);
return error; if (error)
return error;
lock_kernel(); lock_kernel();
res = mapping->a_ops->bmap(mapping, block); res = mapping->a_ops->bmap(mapping, block);
unlock_kernel(); unlock_kernel();
return put_user(res, p); return put_user(res, p);
} }
case FIGETBSZ: case FIGETBSZ:
return put_user(inode->i_sb->s_blocksize, p); return put_user(inode->i_sb->s_blocksize, p);
case FIONREAD: case FIONREAD:
return put_user(i_size_read(inode) - filp->f_pos, p); return put_user(i_size_read(inode) - filp->f_pos, p);
} }
return do_ioctl(filp, cmd, arg); return do_ioctl(filp, cmd, arg);
@ -82,81 +82,85 @@ static int file_ioctl(struct file *filp, unsigned int cmd,
* vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d. * vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d.
* It's just a simple helper for sys_ioctl and compat_sys_ioctl. * It's just a simple helper for sys_ioctl and compat_sys_ioctl.
*/ */
int vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd, unsigned long arg) int vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
unsigned long arg)
{ {
unsigned int flag; unsigned int flag;
int on, error = 0; int on, error = 0;
switch (cmd) { switch (cmd) {
case FIOCLEX: case FIOCLEX:
set_close_on_exec(fd, 1); set_close_on_exec(fd, 1);
break; break;
case FIONCLEX: case FIONCLEX:
set_close_on_exec(fd, 0); set_close_on_exec(fd, 0);
break; break;
case FIONBIO: case FIONBIO:
if ((error = get_user(on, (int __user *)arg)) != 0) error = get_user(on, (int __user *)arg);
break; if (error)
flag = O_NONBLOCK; break;
flag = O_NONBLOCK;
#ifdef __sparc__ #ifdef __sparc__
/* SunOS compatibility item. */ /* SunOS compatibility item. */
if(O_NONBLOCK != O_NDELAY) if (O_NONBLOCK != O_NDELAY)
flag |= O_NDELAY; flag |= O_NDELAY;
#endif #endif
if (on) if (on)
filp->f_flags |= flag; filp->f_flags |= flag;
else else
filp->f_flags &= ~flag; filp->f_flags &= ~flag;
break;
case FIOASYNC:
error = get_user(on, (int __user *)arg);
if (error)
break; break;
flag = on ? FASYNC : 0;
case FIOASYNC: /* Did FASYNC state change ? */
if ((error = get_user(on, (int __user *)arg)) != 0) if ((flag ^ filp->f_flags) & FASYNC) {
break; if (filp->f_op && filp->f_op->fasync) {
flag = on ? FASYNC : 0; lock_kernel();
error = filp->f_op->fasync(fd, filp, on);
/* Did FASYNC state change ? */ unlock_kernel();
if ((flag ^ filp->f_flags) & FASYNC) { } else
if (filp->f_op && filp->f_op->fasync) {
lock_kernel();
error = filp->f_op->fasync(fd, filp, on);
unlock_kernel();
}
else error = -ENOTTY;
}
if (error != 0)
break;
if (on)
filp->f_flags |= FASYNC;
else
filp->f_flags &= ~FASYNC;
break;
case FIOQSIZE:
if (S_ISDIR(filp->f_path.dentry->d_inode->i_mode) ||
S_ISREG(filp->f_path.dentry->d_inode->i_mode) ||
S_ISLNK(filp->f_path.dentry->d_inode->i_mode)) {
loff_t res = inode_get_bytes(filp->f_path.dentry->d_inode);
error = copy_to_user((loff_t __user *)arg, &res, sizeof(res)) ? -EFAULT : 0;
}
else
error = -ENOTTY; error = -ENOTTY;
}
if (error != 0)
break; break;
default:
if (S_ISREG(filp->f_path.dentry->d_inode->i_mode)) if (on)
error = file_ioctl(filp, cmd, arg); filp->f_flags |= FASYNC;
else else
error = do_ioctl(filp, cmd, arg); filp->f_flags &= ~FASYNC;
break; break;
case FIOQSIZE:
if (S_ISDIR(filp->f_path.dentry->d_inode->i_mode) ||
S_ISREG(filp->f_path.dentry->d_inode->i_mode) ||
S_ISLNK(filp->f_path.dentry->d_inode->i_mode)) {
loff_t res =
inode_get_bytes(filp->f_path.dentry->d_inode);
error = copy_to_user((loff_t __user *)arg, &res,
sizeof(res)) ? -EFAULT : 0;
} else
error = -ENOTTY;
break;
default:
if (S_ISREG(filp->f_path.dentry->d_inode->i_mode))
error = file_ioctl(filp, cmd, arg);
else
error = do_ioctl(filp, cmd, arg);
break;
} }
return error; return error;
} }
asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg) asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
{ {
struct file * filp; struct file *filp;
int error = -EBADF; int error = -EBADF;
int fput_needed; int fput_needed;