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-rw-r--r--libc/sysdeps/linux/common/Makefile.in4
-rw-r--r--libc/sysdeps/linux/common/sync_file_range.c33
2 files changed, 35 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in
index d61ae9f4f..c55f0fe49 100644
--- a/libc/sysdeps/linux/common/Makefile.in
+++ b/libc/sysdeps/linux/common/Makefile.in
@@ -35,8 +35,8 @@ CSRC := $(filter-out inotify.c ioperm.c iopl.c madvise.c \
modify_ldt.c personality.c prctl.c readahead.c reboot.c \
remap_file_pages.c sched_getaffinity.c sched_setaffinity.c \
sendfile64.c sendfile.c setfsgid.c setfsuid.c setresuid.c \
- splice.c vmsplice.c tee.c swapoff.c swapon.c sysctl.c sysinfo.c \
- uselib.c vhangup.c,$(CSRC))
+ splice.c vmsplice.c tee.c swapoff.c swapon.c sync_file_range.c \
+ sysctl.c sysinfo.c uselib.c vhangup.c,$(CSRC))
endif
ifneq ($(UCLIBC_BSD_SPECIFIC),y)
diff --git a/libc/sysdeps/linux/common/sync_file_range.c b/libc/sysdeps/linux/common/sync_file_range.c
new file mode 100644
index 000000000..53f7ae6a1
--- /dev/null
+++ b/libc/sysdeps/linux/common/sync_file_range.c
@@ -0,0 +1,33 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * sync_file_range() for uClibc
+ *
+ * Copyright (C) 2008 Bernhard Reutner-Fischer <uclibc@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#if defined __USE_GNU
+#include <fcntl.h>
+
+#if defined __NR_sync_file_range && defined __UCLIBC_HAS_LFS__
+#define __NR___syscall_sync_file_range __NR_sync_file_range
+static __inline__ _syscall6(int, __syscall_sync_file_range, int, fd,
+ off_t, offset_hi, off_t, offset_lo,
+ off_t, nbytes_hi, off_t, nbytes_lo, unsigned int, flags);
+int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)
+{
+ return __syscall_sync_file_range(fd,
+ __LONG_LONG_PAIR((long)(offset >> 32), (long)(offset & 0xffffffff)),
+ __LONG_LONG_PAIR((long)(nbytes >> 32), (long)(nbytes & 0xffffffff)),
+ flags);
+}
+#elif defined __UCLIBC_HAS_STUBS__
+int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)
+{
+ __set_errno(ENOSYS);
+ return -1;
+}
+#endif
+#endif