# HG changeset patch
# User Vince Weaver <[email protected]>
# Date 1256920315 14400
# Node ID c4b69afe784dabda866140d01a06fd46de3ea54c
# Parent 4842482e1bd1fbc33b8a6f4cf6cc9eec32cda800
implement truncate64 system call
This uses the new stack-based argument infrastructure.
Tested on x86 and x86_64.
diff -r 4842482e1bd1 -r c4b69afe784d src/sim/syscall_emul.cc
--- a/src/sim/syscall_emul.cc Fri Oct 30 00:44:55 2009 -0700
+++ b/src/sim/syscall_emul.cc Fri Oct 30 12:31:55 2009 -0400
@@ -449,6 +449,25 @@
}
SyscallReturn
+truncate64Func(SyscallDesc *desc, int num,
+ LiveProcess *process, ThreadContext *tc)
+{
+ int index = 0;
+ string path;
+
+ if (!tc->getMemPort()->tryReadString(path, process->getSyscallArg(tc,
index)))
+ return -EFAULT;
+
+ loff_t length = process->getSyscallArg(tc, index, 64);
+
+ // Adjust path for current working directory
+ path = process->fullPath(path);
+
+ int result = truncate64(path.c_str(), length);
+ return (result == -1) ? -errno : result;
+}
+
+SyscallReturn
ftruncate64Func(SyscallDesc *desc, int num,
LiveProcess *process, ThreadContext *tc)
{
diff -r 4842482e1bd1 -r c4b69afe784d src/sim/syscall_emul.hh
--- a/src/sim/syscall_emul.hh Fri Oct 30 00:44:55 2009 -0700
+++ b/src/sim/syscall_emul.hh Fri Oct 30 12:31:55 2009 -0400
@@ -260,6 +260,10 @@
LiveProcess *p, ThreadContext *tc);
+/// Target truncate64() handler.
+SyscallReturn truncate64Func(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
+
/// Target ftruncate64() handler.
SyscallReturn ftruncate64Func(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
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