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add support for VKI_BLKDISCARDZEROES

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this is used in some newer QEMU versions and other tools


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14235
This commit is contained in:
Christian Borntraeger 2014-08-05 15:14:52 +00:00
parent 67b975eb93
commit 00a31dd3d1
3 changed files with 9 additions and 1 deletions
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1
NEWS
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@ -209,6 +209,7 @@ n-i-bz internal error in Valgrind if vgdb transmit signals when ptrace invoked
n-i-bz Fix mingw64 support in valgrind.h (dev@, 9 May 2014)
n-i-bz drd manual: Document how to C++11 programs that use class "std::thread"
n-i-bz Add command-line option --default-suppressions
n-i-bz Add support for BLKDISCARDZEROES ioctl
Release 3.9.0 (31 October 2013)

6
coregrind/m_syswrap/syswrap-linux.c
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@ -6087,6 +6087,9 @@ PRE(sys_ioctl)
case VKI_BLKPBSZGET:
PRE_MEM_WRITE( "ioctl(BLKPBSZGET)", ARG3, sizeof(int));
break;
case VKI_BLKDISCARDZEROES:
PRE_MEM_WRITE( "ioctl(BLKDISCARDZEROES)", ARG3, sizeof(vki_uint));
break;
/* Hard disks */
case VKI_HDIO_GETGEO: /* 0x0301 */
@ -7694,6 +7697,9 @@ POST(sys_ioctl)
case VKI_BLKPBSZGET:
POST_MEM_WRITE(ARG3, sizeof(int));
break;
case VKI_BLKDISCARDZEROES:
POST_MEM_WRITE(ARG3, sizeof(vki_uint));
break;
/* Hard disks */
case VKI_HDIO_GETGEO: /* 0x0301 */

3
include/vki/vki-linux.h
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@ -1720,7 +1720,7 @@ struct vki_ppdev_frob_struct {
#define VKI_PPSETFLAGS _VKI_IOW(VKI_PP_IOCTL, 0x9b, int)
//----------------------------------------------------------------------
// From linux-2.6.8.1/include/linux/fs.h
// From linux-3.16/include/uapi/linux/fs.h
//----------------------------------------------------------------------
#define VKI_BLKROSET _VKI_IO(0x12,93) /* set device read-only (0 = read-write) */
@ -1736,6 +1736,7 @@ struct vki_ppdev_frob_struct {
#define VKI_BLKBSZSET _VKI_IOW(0x12,113,vki_size_t)
#define VKI_BLKGETSIZE64 _VKI_IOR(0x12,114,vki_size_t) /* return device size in bytes (u64 *arg) */
#define VKI_BLKPBSZGET _VKI_IO(0x12,123)
#define VKI_BLKDISCARDZEROES _VKI_IO(0x12,124)
#define VKI_FIBMAP _VKI_IO(0x00,1) /* bmap access */
#define VKI_FIGETBSZ _VKI_IO(0x00,2) /* get the block size used for bmap */