81 lines
2.3 KiB
Diff
81 lines
2.3 KiB
Diff
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From ad0b7fcf697651a156c0e4a2911dd9fa69fd011c Mon Sep 17 00:00:00 2001
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From: Ulrich Hecht <uli@suse.de>
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Date: Thu, 23 Jul 2009 14:33:36 +0200
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Subject: [PATCH 26/33] linux-user: dup3, fallocate syscalls
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implementations of dup3 and fallocate that are good enough to fool LTP
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Signed-off-by: Ulrich Hecht <uli@suse.de>
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---
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configure | 18 ++++++++++++++++++
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linux-user/syscall.c | 10 ++++++++++
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2 files changed, 28 insertions(+), 0 deletions(-)
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diff --git a/configure b/configure
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index e0874b5..4be25f6 100755
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--- a/configure
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+++ b/configure
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@@ -1355,6 +1355,21 @@ if $cc $ARCH_CFLAGS -o $TMPE $TMPC 2> /dev/null ; then
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splice=yes
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fi
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+# check for fallocate
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+fallocate=no
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+cat > $TMPC << EOF
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+#include <fcntl.h>
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+
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+int main(void)
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+{
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+ fallocate(0, 0, 0, 0);
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+ return 0;
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+}
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+EOF
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+if $cc $ARCH_CFLAGS -o $TMPE $TMPC 2> /dev/null ; then
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+ fallocate=yes
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+fi
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+
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# Check if tools are available to build documentation.
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if test "$build_docs" = "yes" -a \( ! -x "`which texi2html 2>/dev/null`" -o ! -x "`which pod2man 2>/dev/null`" \) ; then
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build_docs="no"
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@@ -1707,6 +1722,9 @@ fi
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if test "$splice" = "yes" ; then
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echo "#define CONFIG_SPLICE 1" >> $config_host_h
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fi
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+if test "$fallocate" = "yes" ; then
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+ echo "#define CONFIG_FALLOCATE 1" >> $config_host_h
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+fi
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if test "$inotify" = "yes" ; then
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echo "#define CONFIG_INOTIFY 1" >> $config_host_h
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fi
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diff --git a/linux-user/syscall.c b/linux-user/syscall.c
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index f7a411d..4fb7998 100644
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--- a/linux-user/syscall.c
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+++ b/linux-user/syscall.c
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@@ -4750,6 +4750,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
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case TARGET_NR_dup2:
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ret = get_errno(dup2(arg1, arg2));
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break;
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+#ifdef TARGET_NR_dup3
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+ case TARGET_NR_dup3:
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+ ret = get_errno(dup3(arg1, arg2, arg3));
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+ break;
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+#endif
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#ifdef TARGET_NR_getppid /* not on alpha */
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case TARGET_NR_getppid:
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ret = get_errno(getppid());
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@@ -7016,6 +7021,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
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}
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#endif
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+#if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate)
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+ case TARGET_NR_fallocate:
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+ ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
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+ break;
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+#endif
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default:
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unimplemented:
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gemu_log("qemu: Unsupported syscall: %d\n", num);
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--
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1.6.2.1
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