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authorPeter Maydell <peter.maydell@linaro.org>2011-01-06 11:05:10 +0000
committerRiku Voipio <riku.voipio@iki.fi>2011-01-07 17:13:22 +0200
commitc727f47d59641c43ce171126232fd8049296adf6 (patch)
treefce1c2a0ebc893077b5ac9ca851d2f31f1f0566c
parent2a704b137f1acfbd972aa6e9f031c5015c7e28cb (diff)
linux-user: Implement sync_file_range{,2} syscalls
Implement the missing syscalls sync_file_range and sync_file_range2. The latter in particular is used by newer versions of apt on Ubuntu for ARM. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
-rwxr-xr-xconfigure18
-rw-r--r--linux-user/strace.list6
-rw-r--r--linux-user/syscall.c23
3 files changed, 47 insertions, 0 deletions
diff --git a/configure b/configure
index 47e4cf04c..831a741c7 100755
--- a/configure
+++ b/configure
@@ -2075,6 +2075,21 @@ if compile_prog "$ARCH_CFLAGS" "" ; then
fallocate=yes
fi
+# check for sync_file_range
+sync_file_range=no
+cat > $TMPC << EOF
+#include <fcntl.h>
+
+int main(void)
+{
+ sync_file_range(0, 0, 0, 0);
+ return 0;
+}
+EOF
+if compile_prog "$ARCH_CFLAGS" "" ; then
+ sync_file_range=yes
+fi
+
# check for dup3
dup3=no
cat > $TMPC << EOF
@@ -2613,6 +2628,9 @@ fi
if test "$fallocate" = "yes" ; then
echo "CONFIG_FALLOCATE=y" >> $config_host_mak
fi
+if test "$sync_file_range" = "yes" ; then
+ echo "CONFIG_SYNC_FILE_RANGE=y" >> $config_host_mak
+fi
if test "$dup3" = "yes" ; then
echo "CONFIG_DUP3=y" >> $config_host_mak
fi
diff --git a/linux-user/strace.list b/linux-user/strace.list
index 97b7f7691..d7be0e7a6 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -1518,3 +1518,9 @@
#ifdef TARGET_NR_utimensat
{ TARGET_NR_utimensat, "utimensat", NULL, print_utimensat, NULL },
#endif
+#ifdef TARGET_NR_sync_file_range
+{ TARGET_NR_sync_file_range, "sync_file_range", NULL, NULL, NULL },
+#endif
+#ifdef TARGET_NR_sync_file_range2
+{ TARGET_NR_sync_file_range2, "sync_file_range2", NULL, NULL, NULL },
+#endif
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index c3e870654..1939a5f0e 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -7365,6 +7365,29 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
ret = get_errno(fallocate(arg1, arg2, arg3, arg4));
break;
#endif
+#if defined(CONFIG_SYNC_FILE_RANGE)
+#if defined(TARGET_NR_sync_file_range)
+ case TARGET_NR_sync_file_range:
+#if TARGET_ABI_BITS == 32
+ ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3),
+ target_offset64(arg4, arg5), arg6));
+#else
+ ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4));
+#endif
+ break;
+#endif
+#if defined(TARGET_NR_sync_file_range2)
+ case TARGET_NR_sync_file_range2:
+ /* This is like sync_file_range but the arguments are reordered */
+#if TARGET_ABI_BITS == 32
+ ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4),
+ target_offset64(arg5, arg6), arg2));
+#else
+ ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2));
+#endif
+ break;
+#endif
+#endif
default:
unimplemented:
gemu_log("qemu: Unsupported syscall: %d\n", num);