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Diffstat (limited to 'libc/sysdeps/linux/powerpc/posix_fadvise64.c')
-rw-r--r--libc/sysdeps/linux/powerpc/posix_fadvise64.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/powerpc/posix_fadvise64.c b/libc/sysdeps/linux/powerpc/posix_fadvise64.c
new file mode 100644
index 000000000..30b9bec6e
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/posix_fadvise64.c
@@ -0,0 +1,70 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * posix_fadvise64() for uClibc
+ * http://www.opengroup.org/onlinepubs/009695399/functions/posix_fadvise.html
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <features.h>
+#include <unistd.h>
+#include <errno.h>
+#include <endian.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <fcntl.h>
+
+#ifdef __UCLIBC_HAS_LFS__
+#ifdef __NR_fadvise64_64
+
+/* 64 bit implementation is cake ... or more like pie ... */
+#if __WORDSIZE == 64
+
+#define __NR_posix_fadvise64 __NR_fadvise64_64
+
+int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice)
+{
+ if (len != (off_t) len)
+ return EOVERFLOW;
+ INTERNAL_SYSCALL_DECL (err);
+ int ret = INTERNAL_SYSCALL (posix_fadvise64, err, 6, fd, 0,
+ __LONG_LONG_PAIR ((long) (offset >> 32),
+ (long) offset),
+ (off_t) len, advice);
+ if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
+ return 0;
+ return INTERNAL_SYSCALL_ERRNO (ret, err);
+}
+
+/* 32 bit implementation is kind of a pita */
+#elif __WORDSIZE == 32
+
+int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice)
+{
+ INTERNAL_SYSCALL_DECL (err);
+ int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, advise,
+ __LONG_LONG_PAIR(offset >> 32, offset & 0xffffffff),
+ __LONG_LONG_PAIR(len >> 32, len & 0xffffffff));
+ if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
+ return 0;
+ return INTERNAL_SYSCALL_ERRNO (ret, err);
+}
+
+#else
+#error your machine is neither 32 bit or 64 bit ... it must be magical
+#endif
+
+#elif !defined __NR_fadvise64
+/* This is declared as a strong alias in posix_fadvise.c if __NR_fadvise64
+ * is defined.
+ */
+int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice)
+{
+#warning This is not correct as far as SUSv3 is concerned.
+ return ENOSYS;
+}
+#endif /* __NR_fadvise64_64 */
+#endif /* __UCLIBC_HAS_LFS__ */