changeset af13eb1b7f81 in /z/repo/m5
details: http://repo.m5sim.org/m5?cmd=changeset;node=af13eb1b7f81
description:
syscall: Implementation of the ftruncate64 system call.
diffstat:
2 files changed, 21 insertions(+)
src/sim/syscall_emul.cc | 16 ++++++++++++++++
src/sim/syscall_emul.hh | 5 +++++
diffs (41 lines):
diff -r 04cba5a03e2e -r af13eb1b7f81 src/sim/syscall_emul.cc
--- a/src/sim/syscall_emul.cc Sat Oct 24 10:53:57 2009 -0700
+++ b/src/sim/syscall_emul.cc Sat Oct 24 10:53:58 2009 -0700
@@ -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 -r 04cba5a03e2e -r af13eb1b7f81 src/sim/syscall_emul.hh
--- a/src/sim/syscall_emul.hh Sat Oct 24 10:53:57 2009 -0700
+++ b/src/sim/syscall_emul.hh Sat Oct 24 10:53:58 2009 -0700
@@ -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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