pipe2=yes
fi
+# check if tee/splice is there. vmsplice was added same time.
+splice=no
+cat > $TMPC << EOF
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <fcntl.h>
+#include <limits.h>
+
+int main(void)
+{
+ int len, fd;
+ len = tee(STDIN_FILENO, STDOUT_FILENO, INT_MAX, SPLICE_F_NONBLOCK);
+ splice(STDIN_FILENO, NULL, fd, NULL, len, SPLICE_F_MOVE);
+ return 0;
+}
+EOF
+if $cc $ARCH_CFLAGS -o $TMPE $TMPC 2> /dev/null ; then
+ splice=yes
+fi
+
# Check if tools are available to build documentation.
if test "$build_docs" = "yes" -a \( ! -x "`which texi2html 2>/dev/null`" -o ! -x "`which pod2man 2>/dev/null`" \) ; then
build_docs="no"
if test "$pipe2" = "yes" ; then
echo "#define CONFIG_PIPE2 1" >> $config_h
fi
+if test "$splice" = "yes" ; then
+ echo "#define CONFIG_SPLICE 1" >> $config_h
+fi
if test "$inotify" = "yes" ; then
echo "#define CONFIG_INOTIFY 1" >> $config_h
fi
break;
#endif
+#ifdef CONFIG_SPLICE
+#ifdef TARGET_NR_tee
+ case TARGET_NR_tee:
+ {
+ ret = get_errno(tee(arg1,arg2,arg3,arg4));
+ }
+ break;
+#endif
+#ifdef TARGET_NR_splice
+ case TARGET_NR_splice:
+ {
+ loff_t loff_in, loff_out;
+ loff_t *ploff_in = NULL, *ploff_out = NULL;
+ if(arg2) {
+ get_user_u64(loff_in, arg2);
+ ploff_in = &loff_in;
+ }
+ if(arg4) {
+ get_user_u64(loff_out, arg2);
+ ploff_out = &loff_out;
+ }
+ ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6));
+ }
+ break;
+#endif
+#ifdef TARGET_NR_vmsplice
+ case TARGET_NR_vmsplice:
+ {
+ int count = arg3;
+ struct iovec *vec;
+
+ vec = alloca(count * sizeof(struct iovec));
+ if (lock_iovec(VERIFY_READ, vec, arg2, count, 1) < 0)
+ goto efault;
+ ret = get_errno(vmsplice(arg1, vec, count, arg4));
+ unlock_iovec(vec, arg2, count, 0);
+ }
+ break;
+#endif
+#endif /* CONFIG_SPLICE */
default:
unimplemented:
gemu_log("qemu: Unsupported syscall: %d\n", num);