# HG changeset patch
# User Timothy M. Jones <[email protected]>
# Date 1255004953 -3600
# Node ID affca5319e825ac819c83a5faf8c980745d4472f
# Parent 3f8045e58321a3d55381ecbe2f5ce4cc3e9b0570
Implementation of the ftruncate64 system call.
diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -405,6 +405,22 @@
}
SyscallReturn
+ftruncate64Func(SyscallDesc *desc, int num,
+ LiveProcess *process, ThreadContext *tc)
+{
+ int fd = process->sim_fd(process->getSyscallArg(tc, 0));
+
+ if (fd < 0)
+ return -EBADF;
+
+ // I'm not sure why, but the length argument is in arg reg 3
+ loff_t length = process->getSyscallArg(tc, 3);
+
+ int result = ftruncate64(fd, length);
+ return (result == -1) ? -errno : result;
+}
+
+SyscallReturn
umaskFunc(SyscallDesc *desc, int num, LiveProcess *process, ThreadContext *tc)
{
// Letting the simulated program change the simulator's umask seems like
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -260,6 +260,11 @@
LiveProcess *p, ThreadContext *tc);
+/// Target ftruncate64() handler.
+SyscallReturn ftruncate64Func(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
+
+
/// Target umask() handler.
SyscallReturn umaskFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
--
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Scotland, with registration number SC005336.
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