linux-kernel - [PATCH] block: change return values from -EACCES to -EPERM

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Date:	Sat, 22 Sep 2012 17:07:11 +0800
From:	Zhao Hongjiang <zhaohongjiang37@...il.com>
To:	axboe@...nel.dk
CC:	linux-kernel@...r.kernel.org
Subject: [PATCH] block: change return values from -EACCES to -EPERM

From: Zhao Hongjiang <zhaohongjiang@...wei.com>

Change return value from -EACCES to -EPERM when the permission check fails.

Signed-off-by: Zhao Hongjiang <zhaohongjiang@...wei.com>
---

This patch is based on linux-next tree http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git

---
 block/compat_ioctl.c |    2 +-
 block/ioctl.c        |   12 ++++++------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 7c668c8..a21bf98 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -725,7 +725,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 	case BLKRASET: /* compatible, but no compat_ptr (!) */
 	case BLKFRASET:
 		if (!capable(CAP_SYS_ADMIN))
-			return -EACCES;
+			return -EPERM;
 		bdi = blk_get_backing_dev_info(bdev);
 		if (bdi == NULL)
 			return -ENOTTY;
diff --git a/block/ioctl.c b/block/ioctl.c
index a31d91d..b7d6f07 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -21,7 +21,7 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
 	int partno;

 	if (!capable(CAP_SYS_ADMIN))
-		return -EACCES;
+		return -EPERM;
 	if (copy_from_user(&a, arg, sizeof(struct blkpg_ioctl_arg)))
 		return -EFAULT;
 	if (copy_from_user(&p, a.data, sizeof(struct blkpg_partition)))
@@ -158,7 +158,7 @@ static int blkdev_reread_part(struct block_device *bdev)
 	if (!disk_part_scan_enabled(disk) || bdev != bdev->bd_contains)
 		return -EINVAL;
 	if (!capable(CAP_SYS_ADMIN))
-		return -EACCES;
+		return -EPERM;
 	if (!mutex_trylock(&bdev->bd_mutex))
 		return -EBUSY;
 	res = rescan_partitions(disk, bdev);
@@ -282,7 +282,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
 	switch(cmd) {
 	case BLKFLSBUF:
 		if (!capable(CAP_SYS_ADMIN))
-			return -EACCES;
+			return -EPERM;

 		ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);
 		if (!is_unrecognized_ioctl(ret))
@@ -297,7 +297,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
 		if (!is_unrecognized_ioctl(ret))
 			return ret;
 		if (!capable(CAP_SYS_ADMIN))
-			return -EACCES;
+			return -EPERM;
 		if (get_user(n, (int __user *)(arg)))
 			return -EFAULT;
 		set_device_ro(bdev, n);
@@ -381,7 +381,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
 	case BLKRASET:
 	case BLKFRASET:
 		if(!capable(CAP_SYS_ADMIN))
-			return -EACCES;
+			return -EPERM;
 		bdi = blk_get_backing_dev_info(bdev);
 		if (bdi == NULL)
 			return -ENOTTY;
@@ -390,7 +390,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
 	case BLKBSZSET:
 		/* set the logical block size */
 		if (!capable(CAP_SYS_ADMIN))
-			return -EACCES;
+			return -EPERM;
 		if (!arg)
 			return -EINVAL;
 		if (get_user(n, (int __user *) arg))
-- 1.7.1
--
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