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authorChristoph Hellwig <hch@lst.de>2006-01-09 20:52:14 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-10 08:01:33 -0800
commite6a6d2efcb7e7c87c5fe0395803da1453b29cbef (patch)
tree76061b3067e22ba78cce975e5f729c6a6a37fce5 /fs/compat_ioctl.c
parent8262037f406dc8e0908ad51f355c3dfd4d662aba (diff)
downloadlwn-e6a6d2efcb7e7c87c5fe0395803da1453b29cbef.tar.gz
lwn-e6a6d2efcb7e7c87c5fe0395803da1453b29cbef.zip
[PATCH] sanitize building of fs/compat_ioctl.c
Now that all these entries in the arch ioctl32.c files are gone [1], we can build fs/compat_ioctl.c as a normal object and kill tons of cruft. We need a special do_ioctl32_pointer handler for s390 so the compat_ptr call is done. This is not needed but harmless on all other architectures. Also remove some superflous includes in fs/compat_ioctl.c Tested on ppc64. [1] parisc still had it's PPP handler left, which is not fully correct for ppp and besides that ppp uses the generic SIOCPRIV ioctl so it'd kick in for all netdevice users. We can introduce a proper handler in one of the next patch series by adding a compat_ioctl method to struct net_device but for now let's just kill it - parisc doesn't compile in mainline anyway and I don't want this to block this patchset. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Matthew Wilcox <willy@debian.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/compat_ioctl.c')
-rw-r--r--fs/compat_ioctl.c37
1 files changed, 21 insertions, 16 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index b9aeacc11c8f..890bc30fbe20 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -10,7 +10,6 @@
* ioctls.
*/
-#ifdef INCLUDES
#include <linux/config.h>
#include <linux/types.h>
#include <linux/compat.h>
@@ -81,13 +80,9 @@
#include <linux/capi.h>
#include <scsi/scsi.h>
-/* Ugly hack. */
-#undef __KERNEL__
#include <scsi/scsi_ioctl.h>
-#define __KERNEL__
#include <scsi/sg.h>
-#include <asm/types.h>
#include <asm/uaccess.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
@@ -95,7 +90,6 @@
#include <linux/watchdog.h>
#include <linux/dm-ioctl.h>
-#include <asm/module.h>
#include <linux/soundcard.h>
#include <linux/lp.h>
#include <linux/ppdev.h>
@@ -128,11 +122,6 @@
#include <linux/dvb/frontend.h>
#include <linux/dvb/video.h>
-#undef INCLUDES
-#endif
-
-#ifdef CODE
-
/* Aiee. Someone does not find a difference between int and long */
#define EXT2_IOC32_GETFLAGS _IOR('f', 1, int)
#define EXT2_IOC32_SETFLAGS _IOW('f', 2, int)
@@ -148,6 +137,12 @@
#define EXT2_IOC32_GETVERSION _IOR('v', 1, int)
#define EXT2_IOC32_SETVERSION _IOW('v', 2, int)
+static int do_ioctl32_pointer(unsigned int fd, unsigned int cmd,
+ unsigned long arg, struct file *f)
+{
+ return sys_ioctl(fd, cmd, (unsigned long)compat_ptr(arg));
+}
+
static int w_long(unsigned int fd, unsigned int cmd, unsigned long arg)
{
mm_segment_t old_fs = get_fs();
@@ -2705,10 +2700,20 @@ static int do_ncp_setprivatedata(unsigned int fd, unsigned int cmd, unsigned lon
}
#endif
-#undef CODE
-#endif
+#define HANDLE_IOCTL(cmd,handler) \
+ { (cmd), (ioctl_trans_handler_t)(handler) },
+
+/* pointer to compatible structure or no argument */
+#define COMPATIBLE_IOCTL(cmd) \
+ { (cmd), do_ioctl32_pointer },
+
+/* argument is an unsigned long integer, not a pointer */
+#define ULONG_IOCTL(cmd) \
+ { (cmd), (ioctl_trans_handler_t)sys_ioctl },
-#ifdef DECLARES
+
+struct ioctl_trans ioctl_start[] = {
+#include <linux/compat_ioctl.h>
HANDLE_IOCTL(MEMREADOOB32, mtd_rw_oob)
HANDLE_IOCTL(MEMWRITEOOB32, mtd_rw_oob)
#ifdef CONFIG_NET
@@ -2921,6 +2926,6 @@ HANDLE_IOCTL(DMX_GET_EVENT, do_dmx_get_event)
HANDLE_IOCTL(VIDEO_GET_EVENT, do_video_get_event)
HANDLE_IOCTL(VIDEO_STILLPICTURE, do_video_stillpicture)
HANDLE_IOCTL(VIDEO_SET_SPU_PALETTE, do_video_set_spu_palette)
+};
-#undef DECLARES
-#endif
+int ioctl_table_size = ARRAY_SIZE(ioctl_start);