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Old 04-17-2008, 06:17 PM
 
Default Cluster Project branch, RHEL5, updated. cmirror_1_1_15-53-gb0fdc2f

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http://sources.redhat.com/git/gitweb.cgi?p=cluster.git;a=commitdiff;h=b0fdc2f9d6 ce482ba6a7cb54cc9f17a0be1ff395

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via b0fdc2f9d6ce482ba6a7cb54cc9f17a0be1ff395 (commit)
from b2686ffe984c517110b949d604c54a71800b67c9 (commit)

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- Log -----------------------------------------------------------------
commit b0fdc2f9d6ce482ba6a7cb54cc9f17a0be1ff395
Author: Benjamin Marzinski <bmarzins@redhat.com>
Date: Thu Apr 17 11:41:09 2008 -0500

The gnbd kernel module on 64 bit architectures didn't handle ioctls from 32 bit
userspace processes. Now it does.
Resolves: bz #440454

Also, I was getting an error because on ppc64, the manual definition of O_DIRECT
in gnbd/server/device.c was incorrect. I switched to defining _GNU_SOURCE, which
should mean that O_DIRECT will be automatically defined.

-----------------------------------------------------------------------

Summary of changes:
gnbd-kernel/src/gnbd.c | 33 +++++++++++++++++++++++++++++++++
gnbd/server/device.c | 7 ++-----
2 files changed, 35 insertions(+), 5 deletions(-)

diff --git a/gnbd-kernel/src/gnbd.c b/gnbd-kernel/src/gnbd.c
index 2795961..d637141 100644
--- a/gnbd-kernel/src/gnbd.c
+++ b/gnbd-kernel/src/gnbd.c
@@ -30,6 +30,9 @@
#include <linux/buffer_head.h>
#include <linux/miscdevice.h>
#include <linux/moduleparam.h>
+#ifdef CONFIG_COMPAT
+#include <linux/compat.h>
+#endif

#include <asm/uaccess.h>
#include <asm/types.h>
@@ -801,6 +804,33 @@ static int gnbd_ctl_ioctl(struct inode *inode, struct file *file,
return -EINVAL;
}

+#ifdef CONFIG_COMPAT
+static long gnbd_ctl_compat_ioctl(struct file *f, unsigned cmd,
+ unsigned long arg)
+{
+ int ret;
+ switch (cmd) {
+ case GNBD_DISCONNECT:
+ case GNBD_CLEAR_QUE:
+ case GNBD_PING:
+ case GNBD_PRINT_DEBUG:
+ lock_kernel();
+ ret = gnbd_ctl_ioctl(f->f_dentry->d_inode, f, cmd, arg);
+ unlock_kernel();
+ return ret;
+ case GNBD_DO_IT:
+ case GNBD_GET_TIME:
+ lock_kernel();
+ ret = gnbd_ctl_ioctl(f->f_dentry->d_inode, f, cmd,
+ (unsigned long)compat_ptr(arg));
+ unlock_kernel();
+ return ret;
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+#endif
+
static int gnbd_open(struct inode *inode, struct file *file)
{
struct gnbd_device *dev = inode->i_bdev->bd_disk->private_data;
@@ -836,6 +866,9 @@ static int gnbd_release(struct inode *inode, struct file *file)
static struct file_operations _gnbd_ctl_fops =
{
.ioctl = gnbd_ctl_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = gnbd_ctl_compat_ioctl,
+#endif
.owner = THIS_MODULE,
};

diff --git a/gnbd/server/device.c b/gnbd/server/device.c
index 2c830ae..b547897 100644
--- a/gnbd/server/device.c
+++ b/gnbd/server/device.c
@@ -10,6 +10,7 @@
************************************************** *****************************
************************************************** ****************************/

+#define _GNU_SOURCE
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
@@ -27,10 +28,6 @@
#define BLKGETSIZE64 _IOR(0x12, 114, uint64_t)
#endif

-#ifndef O_DIRECT
-#define O_DIRECT 040000
-#endif
-
#include "list.h"
#include "gnbd_utils.h"
#include "local_req.h"
@@ -106,7 +103,7 @@ int open_file(char *path, unsigned int flags, int *devfd)
if (fd < 0){
err = -errno;
log_err("cannot open %s in %s%s mode : %s
", path,
- (flags & GNBD_FLAGS_READONLY)? "O_RDONLY" : "O_RDWR | OSYNC",
+ (flags & GNBD_FLAGS_READONLY)? "O_RDONLY" : "O_RDWR | O_SYNC",
(flags & GNBD_FLAGS_UNCACHED)? " | O_DIRECT" : "",
strerror(errno));
return err;


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