| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20060824213316.21323.54434.stgit@warthog.cambridge.redhat.com>
Date: Thu, 24 Aug 2006 22:33:16 +0100
From: David Howells <dhowells@...hat.com>
To: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: dhowells@...hat.com
Subject: [PATCH 10/17] BLOCK: Move the loop device ioctl compat stuff to the loop driver [try #2]
From: David Howells <dhowells@...hat.com>
Move the loop device ioctl compat stuff from fs/compat_ioctl.c to the loop
driver so that the loop header file doesn't need to be included.
Signed-Off-By: David Howells <dhowells@...hat.com>
---
drivers/block/loop.c | 76 ++++++++++++++++++++++++++++++++++++++++++
fs/compat_ioctl.c | 68 --------------------------------------
include/linux/compat_ioctl.h | 6 ---
3 files changed, 76 insertions(+), 74 deletions(-)
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 7b3b94d..48ad173 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -66,6 +66,7 @@ #include <linux/smp_lock.h>
#include <linux/swap.h>
#include <linux/slab.h>
#include <linux/loop.h>
+#include <linux/compat.h>
#include <linux/suspend.h>
#include <linux/writeback.h>
#include <linux/buffer_head.h> /* for invalidate_bdev() */
@@ -1174,6 +1175,78 @@ static int lo_ioctl(struct inode * inode
return err;
}
+#ifdef CONFIG_COMPAT
+struct loop_info32 {
+ compat_int_t lo_number; /* ioctl r/o */
+ compat_dev_t lo_device; /* ioctl r/o */
+ compat_ulong_t lo_inode; /* ioctl r/o */
+ compat_dev_t lo_rdevice; /* ioctl r/o */
+ compat_int_t lo_offset;
+ compat_int_t lo_encrypt_type;
+ compat_int_t lo_encrypt_key_size; /* ioctl w/o */
+ compat_int_t lo_flags; /* ioctl r/o */
+ char lo_name[LO_NAME_SIZE];
+ unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
+ compat_ulong_t lo_init[2];
+ char reserved[4];
+};
+
+static long lo_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct inode *inode = file->f_dentry->d_inode;
+ mm_segment_t old_fs = get_fs();
+ struct loop_info l;
+ struct loop_info32 __user *ul;
+ int err = -ENOIOCTLCMD;
+
+ ul = compat_ptr(arg);
+
+ lock_kernel();
+ switch(cmd) {
+ case LOOP_SET_STATUS:
+ err = get_user(l.lo_number, &ul->lo_number);
+ err |= __get_user(l.lo_device, &ul->lo_device);
+ err |= __get_user(l.lo_inode, &ul->lo_inode);
+ err |= __get_user(l.lo_rdevice, &ul->lo_rdevice);
+ err |= __copy_from_user(&l.lo_offset, &ul->lo_offset,
+ 8 + (unsigned long)l.lo_init - (unsigned long)&l.lo_offset);
+ if (err) {
+ err = -EFAULT;
+ } else {
+ set_fs (KERNEL_DS);
+ err = lo_ioctl(inode, file, cmd, (unsigned long)&l);
+ set_fs (old_fs);
+ }
+ break;
+ case LOOP_GET_STATUS:
+ set_fs (KERNEL_DS);
+ err = lo_ioctl(inode, file, cmd, (unsigned long)&l);
+ set_fs (old_fs);
+ if (!err) {
+ err = put_user(l.lo_number, &ul->lo_number);
+ err |= __put_user(l.lo_device, &ul->lo_device);
+ err |= __put_user(l.lo_inode, &ul->lo_inode);
+ err |= __put_user(l.lo_rdevice, &ul->lo_rdevice);
+ err |= __copy_to_user(&ul->lo_offset, &l.lo_offset,
+ (unsigned long)l.lo_init - (unsigned long)&l.lo_offset);
+ if (err)
+ err = -EFAULT;
+ }
+ break;
+ case LOOP_CLR_FD:
+ case LOOP_GET_STATUS64:
+ case LOOP_SET_STATUS64:
+ arg = (unsigned long) compat_ptr(arg);
+ case LOOP_SET_FD:
+ case LOOP_CHANGE_FD:
+ err = lo_ioctl(inode, file, cmd, arg);
+ break;
+ }
+ unlock_kernel();
+ return err;
+}
+#endif
+
static int lo_open(struct inode *inode, struct file *file)
{
struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
@@ -1201,6 +1274,9 @@ static struct block_device_operations lo
.open = lo_open,
.release = lo_release,
.ioctl = lo_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = lo_compat_ioctl,
+#endif
};
/*
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 4063a93..d33a2b1 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -40,7 +40,6 @@ #include <linux/if_ppp.h>
#include <linux/if_pppox.h>
#include <linux/mtio.h>
#include <linux/cdrom.h>
-#include <linux/loop.h>
#include <linux/auto_fs.h>
#include <linux/auto_fs4.h>
#include <linux/tty.h>
@@ -1214,71 +1213,6 @@ static int cdrom_ioctl_trans(unsigned in
return err;
}
-struct loop_info32 {
- compat_int_t lo_number; /* ioctl r/o */
- compat_dev_t lo_device; /* ioctl r/o */
- compat_ulong_t lo_inode; /* ioctl r/o */
- compat_dev_t lo_rdevice; /* ioctl r/o */
- compat_int_t lo_offset;
- compat_int_t lo_encrypt_type;
- compat_int_t lo_encrypt_key_size; /* ioctl w/o */
- compat_int_t lo_flags; /* ioctl r/o */
- char lo_name[LO_NAME_SIZE];
- unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
- compat_ulong_t lo_init[2];
- char reserved[4];
-};
-
-static int loop_status(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- mm_segment_t old_fs = get_fs();
- struct loop_info l;
- struct loop_info32 __user *ul;
- int err = -EINVAL;
-
- ul = compat_ptr(arg);
- switch(cmd) {
- case LOOP_SET_STATUS:
- err = get_user(l.lo_number, &ul->lo_number);
- err |= __get_user(l.lo_device, &ul->lo_device);
- err |= __get_user(l.lo_inode, &ul->lo_inode);
- err |= __get_user(l.lo_rdevice, &ul->lo_rdevice);
- err |= __copy_from_user(&l.lo_offset, &ul->lo_offset,
- 8 + (unsigned long)l.lo_init - (unsigned long)&l.lo_offset);
- if (err) {
- err = -EFAULT;
- } else {
- set_fs (KERNEL_DS);
- err = sys_ioctl (fd, cmd, (unsigned long)&l);
- set_fs (old_fs);
- }
- break;
- case LOOP_GET_STATUS:
- set_fs (KERNEL_DS);
- err = sys_ioctl (fd, cmd, (unsigned long)&l);
- set_fs (old_fs);
- if (!err) {
- err = put_user(l.lo_number, &ul->lo_number);
- err |= __put_user(l.lo_device, &ul->lo_device);
- err |= __put_user(l.lo_inode, &ul->lo_inode);
- err |= __put_user(l.lo_rdevice, &ul->lo_rdevice);
- err |= __copy_to_user(&ul->lo_offset, &l.lo_offset,
- (unsigned long)l.lo_init - (unsigned long)&l.lo_offset);
- if (err)
- err = -EFAULT;
- }
- break;
- default: {
- static int count;
- if (++count <= 20)
- printk("%s: Unknown loop ioctl cmd, fd(%d) "
- "cmd(%08x) arg(%08lx)\n",
- __FUNCTION__, fd, cmd, arg);
- }
- }
- return err;
-}
-
extern int tty_ioctl(struct inode * inode, struct file * file, unsigned int cmd, unsigned long arg);
#ifdef CONFIG_VT
@@ -2810,8 +2744,6 @@ HANDLE_IOCTL(MTIOCGET32, mt_ioctl_trans)
HANDLE_IOCTL(MTIOCPOS32, mt_ioctl_trans)
HANDLE_IOCTL(CDROMREADAUDIO, cdrom_ioctl_trans)
HANDLE_IOCTL(CDROM_SEND_PACKET, cdrom_ioctl_trans)
-HANDLE_IOCTL(LOOP_SET_STATUS, loop_status)
-HANDLE_IOCTL(LOOP_GET_STATUS, loop_status)
#define AUTOFS_IOC_SETTIMEOUT32 _IOWR(0x93,0x64,unsigned int)
HANDLE_IOCTL(AUTOFS_IOC_SETTIMEOUT32, ioc_settimeout)
#ifdef CONFIG_VT
diff --git a/include/linux/compat_ioctl.h b/include/linux/compat_ioctl.h
index 269d000..13cea44 100644
--- a/include/linux/compat_ioctl.h
+++ b/include/linux/compat_ioctl.h
@@ -394,12 +394,6 @@ COMPATIBLE_IOCTL(DVD_WRITE_STRUCT)
COMPATIBLE_IOCTL(DVD_AUTH)
/* pktcdvd */
COMPATIBLE_IOCTL(PACKET_CTRL_CMD)
-/* Big L */
-ULONG_IOCTL(LOOP_SET_FD)
-ULONG_IOCTL(LOOP_CHANGE_FD)
-COMPATIBLE_IOCTL(LOOP_CLR_FD)
-COMPATIBLE_IOCTL(LOOP_GET_STATUS64)
-COMPATIBLE_IOCTL(LOOP_SET_STATUS64)
/* Big A */
/* sparc only */
/* Big Q for sound/OSS */
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists