diff options
| -rw-r--r-- | fs/udf/dir.c | 2 | ||||
| -rw-r--r-- | fs/udf/file.c | 43 | ||||
| -rw-r--r-- | fs/udf/udfdecl.h | 3 |
3 files changed, 29 insertions, 19 deletions
diff --git a/fs/udf/dir.c b/fs/udf/dir.c index f0f2a43..3a84455 100644 --- a/fs/udf/dir.c +++ b/fs/udf/dir.c @@ -209,6 +209,6 @@ static int udf_readdir(struct file *filp, void *dirent, filldir_t filldir) const struct file_operations udf_dir_operations = { .read = generic_read_dir, .readdir = udf_readdir, - .ioctl = udf_ioctl, + .unlocked_ioctl = udf_ioctl, .fsync = simple_fsync, }; diff --git a/fs/udf/file.c b/fs/udf/file.c index 6ebc043..baae3a7 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -37,6 +37,7 @@ #include <linux/quotaops.h> #include <linux/buffer_head.h> #include <linux/aio.h> +#include <linux/smp_lock.h> #include "udf_i.h" #include "udf_sb.h" @@ -144,50 +145,60 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov, return retval; } -int udf_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, - unsigned long arg) +long udf_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { + struct inode *inode = filp->f_dentry->d_inode; long old_block, new_block; int result = -EINVAL; + lock_kernel(); + if (file_permission(filp, MAY_READ) != 0) { - udf_debug("no permission to access inode %lu\n", - inode->i_ino); - return -EPERM; + udf_debug("no permission to access inode %lu\n", inode->i_ino); + result = -EPERM; + goto out; } if (!arg) { udf_debug("invalid argument to udf_ioctl\n"); - return -EINVAL; + result = -EINVAL; + goto out; } switch (cmd) { case UDF_GETVOLIDENT: if (copy_to_user((char __user *)arg, UDF_SB(inode->i_sb)->s_volume_ident, 32)) - return -EFAULT; + result = -EFAULT; else - return 0; + result = 0; + goto out; case UDF_RELOCATE_BLOCKS: - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - if (get_user(old_block, (long __user *)arg)) - return -EFAULT; + if (!capable(CAP_SYS_ADMIN)) { + result = -EACCES; + goto out; + } + if (get_user(old_block, (long __user *)arg)) { + result = -EFAULT; + goto out; + } result = udf_relocate_blocks(inode->i_sb, old_block, &new_block); if (result == 0) result = put_user(new_block, (long __user *)arg); - return result; + goto out; case UDF_GETEASIZE: result = put_user(UDF_I(inode)->i_lenEAttr, (int __user *)arg); - break; + goto out; case UDF_GETEABLOCK: result = copy_to_user((char __user *)arg, UDF_I(inode)->i_ext.i_data, UDF_I(inode)->i_lenEAttr) ? -EFAULT : 0; - break; + goto out; } +out: + unlock_kernel(); return result; } @@ -207,7 +218,7 @@ static int udf_release_file(struct inode *inode, struct file *filp) const struct file_operations udf_file_operations = { .read = do_sync_read, .aio_read = generic_file_aio_read, - .ioctl = udf_ioctl, + .unlocked_ioctl = udf_ioctl, .open = dquot_file_open, .mmap = generic_file_mmap, .write = do_sync_write, diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h index 702a114..9079ff7 100644 --- a/fs/udf/udfdecl.h +++ b/fs/udf/udfdecl.h @@ -130,8 +130,7 @@ extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *, uint8_t *, uint8_t *); /* file.c */ -extern int udf_ioctl(struct inode *, struct file *, unsigned int, - unsigned long); +extern long udf_ioctl(struct file *, unsigned int, unsigned long); extern int udf_setattr(struct dentry *dentry, struct iattr *iattr); /* inode.c */ extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *); |
