qemu/qemu-cvs-ioctl_debug.patch

From: Alexander Graf <agraf@suse.de>
Date: Tue, 14 Apr 2009 16:26:33 +0200
Subject: qemu-cvs-ioctl_debug

Extends unsupported ioctl debug output.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Ulrich Hecht <uli@suse.de>
[BR: minor edits to pass qemu's checkpatch script]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 linux-user/syscall.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 17914fadfc9f3390d4b8ab8d74a6..25fd641816c0a54e49a167f5e818 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5043,7 +5043,19 @@ static abi_long do_ioctl(int fd, int cmd, abi_long arg)
     ie = ioctl_entries;
     for(;;) {
         if (ie->target_cmd == 0) {
-            gemu_log("Unsupported ioctl: cmd=0x%04lx\n", (long)cmd);
+            int i;
+            gemu_log("Unsupported ioctl: cmd=0x%04lx (%x)\n", (unsigned long)cmd,
+                     (unsigned int)(cmd & (TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT))
+                      >> TARGET_IOC_SIZESHIFT);
+            for (i = 0; ioctl_entries[i].target_cmd; i++) {
+                if ((ioctl_entries[i].target_cmd & ~(TARGET_IOC_SIZEMASK
+                    << TARGET_IOC_SIZESHIFT)) == (cmd & ~(TARGET_IOC_SIZEMASK <<
+                    TARGET_IOC_SIZESHIFT)))
+                    gemu_log("%p\t->\t%s (%x)\n", (void *)(unsigned long)
+                             ioctl_entries[i].host_cmd, ioctl_entries[i].name,
+                             (ioctl_entries[i].target_cmd & (TARGET_IOC_SIZEMASK
+                             << TARGET_IOC_SIZESHIFT)) >> TARGET_IOC_SIZESHIFT);
+            }
             return -TARGET_ENOSYS;
         }
         if (ie->target_cmd == cmd)