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[Qemu-devel] [PATCH 1/7] linux-user: dup3, fallocate syscalls
From: |
Ulrich Hecht |
Subject: |
[Qemu-devel] [PATCH 1/7] linux-user: dup3, fallocate syscalls |
Date: |
Fri, 24 Jul 2009 19:10:26 +0200 |
implementations of dup3 and fallocate that are good enough to fool LTP
Signed-off-by: Ulrich Hecht <address@hidden>
---
configure | 18 ++++++++++++++++++
linux-user/syscall.c | 10 ++++++++++
2 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/configure b/configure
index 09c8443..68a18f5 100755
--- a/configure
+++ b/configure
@@ -1371,6 +1371,21 @@ if $cc $ARCH_CFLAGS -o $TMPE $TMPC 2> /dev/null ; then
splice=yes
fi
+# check for fallocate
+fallocate=no
+cat > $TMPC << EOF
+#include <fcntl.h>
+
+int main(void)
+{
+ fallocate(0, 0, 0, 0);
+ return 0;
+}
+EOF
+if $cc $ARCH_CFLAGS -o $TMPE $TMPC 2> /dev/null ; then
+ fallocate=yes
+fi
+
# Check if tools are available to build documentation.
if test "$build_docs" = "yes" -a \( ! -x "`which texi2html 2>/dev/null`" -o !
-x "`which pod2man 2>/dev/null`" \) ; then
build_docs="no"
@@ -1720,6 +1735,9 @@ fi
if test "$splice" = "yes" ; then
echo "#define CONFIG_SPLICE 1" >> $config_host_h
fi
+if test "$fallocate" = "yes" ; then
+ echo "#define CONFIG_FALLOCATE 1" >> $config_host_h
+fi
if test "$inotify" = "yes" ; then
echo "#define CONFIG_INOTIFY 1" >> $config_host_h
fi
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index ca57dd9..b03e879 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4723,6 +4723,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
case TARGET_NR_dup2:
ret = get_errno(dup2(arg1, arg2));
break;
+#ifdef TARGET_NR_dup3
+ case TARGET_NR_dup3:
+ ret = get_errno(dup3(arg1, arg2, arg3));
+ break;
+#endif
#ifdef TARGET_NR_getppid /* not on alpha */
case TARGET_NR_getppid:
ret = get_errno(getppid());
@@ -6975,6 +6980,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
break;
#endif
#endif /* CONFIG_SPLICE */
+#if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
+ case TARGET_NR_fallocate:
+ ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
+ break;
+#endif
default:
unimplemented:
gemu_log("qemu: Unsupported syscall: %d\n", num);
--
1.6.2.1
- [Qemu-devel] [PATCH 0/7] linux-user syscall fixes, Ulrich Hecht, 2009/07/24
- [Qemu-devel] [PATCH 1/7] linux-user: dup3, fallocate syscalls,
Ulrich Hecht <=
- [Qemu-devel] [PATCH 2/7] linux-user: fcntl fixes for LTP, Ulrich Hecht, 2009/07/24
- [Qemu-devel] [PATCH 3/7] linux-user: enable getdents for > 32-bit systems, Ulrich Hecht, 2009/07/24
- [Qemu-devel] [PATCH 4/7] linux-user: define a couple of syscalls for non-uid16 targets, Ulrich Hecht, 2009/07/24
- [Qemu-devel] [PATCH 5/7] linux-user: getpriority errno fix, Ulrich Hecht, 2009/07/24
- [Qemu-devel] [PATCH 6/7] linux-user: fadvise64 implementation, Ulrich Hecht, 2009/07/24
- [Qemu-devel] [PATCH 7/7] linux-user: zero fstat buffer to initialize nsec fields, Ulrich Hecht, 2009/07/24
Re: [Qemu-devel] [PATCH 1/7] linux-user: dup3, fallocate syscalls, Jan-Simon Möller, 2009/07/25