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Diffstat (limited to 'libc/sysdeps/linux/sh/pread_write.c')
-rw-r--r--libc/sysdeps/linux/sh/pread_write.c106
1 files changed, 106 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sh/pread_write.c b/libc/sysdeps/linux/sh/pread_write.c
new file mode 100644
index 000000000..55b234855
--- /dev/null
+++ b/libc/sysdeps/linux/sh/pread_write.c
@@ -0,0 +1,106 @@
+/* vi: set sw=4 ts=4:
+ *
+ * Copyright (C) 2002 by Erik Andersen <andersen@uclibc.org>
+ * Based in part on the files
+ * ./sysdeps/unix/sysv/linux/pwrite.c,
+ * ./sysdeps/unix/sysv/linux/pread.c,
+ * sysdeps/posix/pread.c
+ * sysdeps/posix/pwrite.c
+ * from GNU libc 2.2.5, but reworked considerably...
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define _GNU_SOURCE
+#define _LARGEFILE64_SOURCE
+#include <features.h>
+#undef __OPTIMIZE__
+/* We absolutely do _NOT_ want interfaces silently
+ * * * renamed under us or very bad things will happen... */
+#ifdef __USE_FILE_OFFSET64
+# undef __USE_FILE_OFFSET64
+#endif
+
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <stdint.h>
+
+#ifdef __NR_pread64 /* Newer kernels renamed but it's the same. */
+# ifdef __NR_pread
+# error "__NR_pread and __NR_pread64 both defined???"
+# endif
+# define __NR_pread __NR_pread64
+#endif
+
+#ifdef __NR_pread
+
+
+#define __NR___syscall_pread __NR_pread
+static inline _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
+ size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo);
+
+ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
+{
+ return(__syscall_pread(fd,buf,count,0,__LONG_LONG_PAIR((off_t)0,offset)));
+}
+weak_alias (__libc_pread, pread)
+
+#if defined __UCLIBC_HAS_LFS__
+ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
+{
+ uint32_t low = offset & 0xffffffff;
+ uint32_t high = offset >> 32;
+ return(__syscall_pread(fd, buf, count, 0, __LONG_LONG_PAIR (high, low)));
+}
+weak_alias (__libc_pread64, pread64)
+#endif /* __UCLIBC_HAS_LFS__ */
+
+#endif /* __NR_pread */
+
+/**********************************************************************/
+
+#ifdef __NR_pwrite64 /* Newer kernels renamed but it's the same. */
+# ifdef __NR_pwrite
+# error "__NR_pwrite and __NR_pwrite64 both defined???"
+# endif
+# define __NR_pwrite __NR_pwrite64
+#endif
+
+#ifdef __NR_pwrite
+
+#define __NR___syscall_pwrite __NR_pwrite
+static inline _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
+ size_t, count, int, dummy, off_t, offset_hi, off_t, offset_lo);
+
+ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
+{
+ return(__syscall_pwrite(fd,buf,count,0,__LONG_LONG_PAIR((off_t)0,offset)));
+}
+weak_alias (__libc_pwrite, pwrite)
+
+#if defined __UCLIBC_HAS_LFS__
+ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
+{
+ uint32_t low = offset & 0xffffffff;
+ uint32_t high = offset >> 32;
+ return(__syscall_pwrite(fd, buf, count, 0, __LONG_LONG_PAIR (high, low)));
+}
+weak_alias (__libc_pwrite64, pwrite64)
+#endif /* __UCLIBC_HAS_LFS__ */
+
+#endif /* __NR_pwrite */