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From: <sv...@va...> - 2009-12-21 11:30:06
|
Author: tom
Date: 2009-12-21 11:29:54 +0000 (Mon, 21 Dec 2009)
New Revision: 10969
Log:
Handle adjtimex being called in adjtime mode correctly. Closes #219538.
Validate the constant field with ADJ_TAI is used in an adjtimex call.
Modified:
trunk/coregrind/m_syswrap/syswrap-linux.c
trunk/include/vki/vki-linux.h
Modified: trunk/coregrind/m_syswrap/syswrap-linux.c
===================================================================
--- trunk/coregrind/m_syswrap/syswrap-linux.c 2009-12-16 02:39:39 UTC (rev 10968)
+++ trunk/coregrind/m_syswrap/syswrap-linux.c 2009-12-21 11:29:54 UTC (rev 10969)
@@ -623,18 +623,23 @@
PRE_REG_READ1(long, "adjtimex", struct timex *, buf);
PRE_MEM_READ( "adjtimex(timex->modes)", ARG1, sizeof(tx->modes));
-#define ADJX(bit,field) \
- if (tx->modes & bit) \
+#define ADJX(bits,field) \
+ if (tx->modes & (bits)) \
PRE_MEM_READ( "adjtimex(timex->"#field")", \
(Addr)&tx->field, sizeof(tx->field))
- ADJX(VKI_ADJ_OFFSET, offset);
- ADJX(VKI_ADJ_FREQUENCY, freq);
- ADJX(VKI_ADJ_MAXERROR, maxerror);
- ADJX(VKI_ADJ_ESTERROR, esterror);
- ADJX(VKI_ADJ_STATUS, status);
- ADJX(VKI_ADJ_TIMECONST, constant);
- ADJX(VKI_ADJ_TICK, tick);
+ if (tx->modes & VKI_ADJ_ADJTIME) {
+ if (!(tx->modes & VKI_ADJ_OFFSET_READONLY))
+ PRE_MEM_READ( "adjtimex(timex->offset)", (Addr)&tx->offset, sizeof(tx->offset));
+ } else {
+ ADJX(VKI_ADJ_OFFSET, offset);
+ ADJX(VKI_ADJ_FREQUENCY, freq);
+ ADJX(VKI_ADJ_MAXERROR, maxerror);
+ ADJX(VKI_ADJ_ESTERROR, esterror);
+ ADJX(VKI_ADJ_STATUS, status);
+ ADJX(VKI_ADJ_TIMECONST|VKI_ADJ_TAI, constant);
+ ADJX(VKI_ADJ_TICK, tick);
+ }
#undef ADJX
PRE_MEM_WRITE( "adjtimex(timex)", ARG1, sizeof(struct vki_timex));
Modified: trunk/include/vki/vki-linux.h
===================================================================
--- trunk/include/vki/vki-linux.h 2009-12-16 02:39:39 UTC (rev 10968)
+++ trunk/include/vki/vki-linux.h 2009-12-21 11:29:54 UTC (rev 10969)
@@ -283,8 +283,11 @@
#define VKI_ADJ_ESTERROR 0x0008 /* estimated time error */
#define VKI_ADJ_STATUS 0x0010 /* clock status */
#define VKI_ADJ_TIMECONST 0x0020 /* pll time constant */
+#define VKI_ADJ_TAI 0x0080 /* set TAI offset */
#define VKI_ADJ_TICK 0x4000 /* tick value */
+#define VKI_ADJ_ADJTIME 0x8000 /* switch between adjtime/adjtimex modes */
//#define VKI_ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime */
+#define VKI_ADJ_OFFSET_READONLY 0x2000 /* read-only adjtime */
//----------------------------------------------------------------------
// From linux-2.6.8.1/include/linux/times.h
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