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authorKhem Raj <raj.khem@gmail.com>2009-08-30 00:30:02 -0700
committerKhem Raj <raj.khem@gmail.com>2009-08-30 00:30:02 -0700
commit4882fad17edf8e7f2c13877bdcc04c4068b91d35 (patch)
treef6329721e066398304ad3e45d5a4d51de9c62d9c
parent6625518cd6894338937a74ca6b9187b7b8167b03 (diff)
Add posix_fadvise and posix_fadvise64 for powerpc
The syscall is having different number of params and in one case the parameters are passed in differently. This patch add powerpc specific versions of these functions. Signed-off-by: Khem Raj <raj.khem@gmail.com>
-rw-r--r--libc/sysdeps/linux/powerpc/posix_fadvise.c36
-rw-r--r--libc/sysdeps/linux/powerpc/posix_fadvise64.c70
2 files changed, 106 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/powerpc/posix_fadvise.c b/libc/sysdeps/linux/powerpc/posix_fadvise.c
new file mode 100644
index 000000000..ce3574f4e
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/posix_fadvise.c
@@ -0,0 +1,36 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * posix_fadvise() 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 <sys/syscall.h>
+#include <fcntl.h>
+
+#ifdef __NR_fadvise64
+#define __NR_posix_fadvise __NR_fadvise64
+int posix_fadvise(int fd, off_t offset, off_t len, int advice)
+{
+ INTERNAL_SYSCALL_DECL(err);
+ int ret = (int) (INTERNAL_SYSCALL(posix_fadvise, err, 6, fd, 0,
+ __LONG_LONG_PAIR (offset >> 31, offset), len, advice));
+ if (INTERNAL_SYSCALL_ERROR_P (ret, err))
+ return INTERNAL_SYSCALL_ERRNO (ret, err);
+ return 0;
+}
+
+#if defined __UCLIBC_HAS_LFS__ && (!defined __NR_fadvise64_64 || !defined _syscall6)
+strong_alias(posix_fadvise,posix_fadvise64)
+#endif
+
+#else
+int posix_fadvise(int fd attribute_unused, off_t offset attribute_unused, off_t len attribute_unused, int advice attribute_unused)
+{
+#warning This is not correct as far as SUSv3 is concerned.
+ return ENOSYS;
+}
+#endif
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__ */