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authorWaldemar Brodkorb <wbx@openadk.org>2014-09-09 21:20:07 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2014-09-09 21:20:07 +0200
commitdef0d92193606e184d356c4d2d1752526573f87c (patch)
treeb2460ec3b5eb1f11aa1d92f8909747dae123f0b0 /libc/sysdeps/linux/common/fallocate64.c
parent032f47c7fd7580087d71f2e938dc4f95cc94ce92 (diff)
parent62d3a427afdea136c82bb599a18a593d9b32c533 (diff)
Merge remote-tracking branch 'origin/upstream'
Diffstat (limited to 'libc/sysdeps/linux/common/fallocate64.c')
-rw-r--r--libc/sysdeps/linux/common/fallocate64.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/fallocate64.c b/libc/sysdeps/linux/common/fallocate64.c
new file mode 100644
index 000000000..cf75693d6
--- /dev/null
+++ b/libc/sysdeps/linux/common/fallocate64.c
@@ -0,0 +1,42 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * fallocate() for uClibc - based off posix_fallocate() by Erik Andersen
+ * http://www.opengroup.org/onlinepubs/9699919799/functions/posix_fallocate.html
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+
+#include <fcntl.h>
+#include <bits/kernel-features.h>
+#include <stdint.h>
+
+#if defined __NR_fallocate
+
+# if __WORDSIZE == 64
+/* Can use normal fallocate() */
+# elif __WORDSIZE == 32
+extern __typeof(fallocate64) __libc_fallocate64 attribute_hidden;
+int attribute_hidden __libc_fallocate64(int fd, int mode, __off64_t offset,
+ __off64_t len)
+{
+ int ret;
+ INTERNAL_SYSCALL_DECL(err);
+ ret = (int) (INTERNAL_SYSCALL(fallocate, err, 6, fd, mode,
+ OFF64_HI_LO (offset), OFF64_HI_LO (len)));
+ if (unlikely(INTERNAL_SYSCALL_ERROR_P (ret, err)))
+ return INTERNAL_SYSCALL_ERRNO (ret, err);
+ return 0;
+}
+
+# if defined __UCLIBC_LINUX_SPECIFIC__ && defined __USE_GNU
+strong_alias(__libc_fallocate64,fallocate64)
+# endif
+
+# else
+# error your machine is neither 32 bit or 64 bit ... it must be magical
+# endif
+#endif