SysCalls: Implement truncate64 system call

This uses the new stack-based argument infrastructure.

Tested on x86 and x86_64.

2 files changed, 23 insertions, 0 deletions

diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
index fae3586a4..cc8d99bcd 100644
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -451,6 +451,25 @@ ftruncateFunc(SyscallDesc *desc, int num,
 }
 
 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 --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index 8fe53e266..27c26afb0 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -260,6 +260,10 @@ SyscallReturn ftruncateFunc(SyscallDesc *desc, int num,
                             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);