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ocfs2: Implement compat_ioctl()

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We need this to support 32 bit system calls on 64 bit kernels.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Mark Fasheh 2007-03-09 15:56:28 -08:00
parent 40caf5ea5a
commit 586d232b19
4 changed files with 32 additions and 0 deletions
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6
fs/ocfs2/file.c
View File

@ -1853,6 +1853,9 @@ const struct file_operations ocfs2_fops = {
.aio_read = ocfs2_file_aio_read,
.aio_write = ocfs2_file_aio_write,
.ioctl = ocfs2_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ocfs2_compat_ioctl,
#endif
.splice_read = ocfs2_file_splice_read,
.splice_write = ocfs2_file_splice_write,
};
@ -1862,4 +1865,7 @@ const struct file_operations ocfs2_dops = {
.readdir = ocfs2_readdir,
.fsync = ocfs2_sync_file,
.ioctl = ocfs2_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ocfs2_compat_ioctl,
#endif
};

23
fs/ocfs2/ioctl.c
View File

@ -134,3 +134,26 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp,
}
}
#ifdef CONFIG_COMPAT
long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{
struct inode *inode = file->f_path.dentry->d_inode;
int ret;
switch (cmd) {
case OCFS2_IOC32_GETFLAGS:
cmd = OCFS2_IOC_GETFLAGS;
break;
case OCFS2_IOC32_SETFLAGS:
cmd = OCFS2_IOC_SETFLAGS;
break;
default:
return -ENOIOCTLCMD;
}
lock_kernel();
ret = ocfs2_ioctl(inode, file, cmd, arg);
unlock_kernel();
return ret;
}
#endif

1
fs/ocfs2/ioctl.h
View File

@ -12,5 +12,6 @@
int ocfs2_ioctl(struct inode * inode, struct file * filp,
unsigned int cmd, unsigned long arg);
long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg);
#endif /* OCFS2_IOCTL_H */

2
fs/ocfs2/ocfs2_fs.h
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@ -166,6 +166,8 @@
*/
#define OCFS2_IOC_GETFLAGS _IOR('f', 1, long)
#define OCFS2_IOC_SETFLAGS _IOW('f', 2, long)
#define OCFS2_IOC32_GETFLAGS _IOR('f', 1, int)
#define OCFS2_IOC32_SETFLAGS _IOW('f', 2, int)
/*
* Journal Flags (ocfs2_dinode.id1.journal1.i_flags)