|
@@ -1,12 +1,13 @@
|
|
|
-
|
|
|
- *
|
|
|
+
|
|
|
+
|
|
|
* Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
|
|
|
*
|
|
|
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
|
|
|
*/
|
|
|
-
|
|
|
+
|
|
|
+ * Based in part on the files
|
|
|
* ./sysdeps/unix/sysv/linux/pwrite.c,
|
|
|
- * ./sysdeps/unix/sysv/linux/pread.c,
|
|
|
+ * ./sysdeps/unix/sysv/linux/pread.c,
|
|
|
* sysdeps/posix/pread.c
|
|
|
* sysdeps/posix/pwrite.c
|
|
|
* from GNU libc 2.2.5, but reworked considerably...
|
|
@@ -15,6 +16,7 @@
|
|
|
#include <sys/syscall.h>
|
|
|
#include <unistd.h>
|
|
|
#include <stdint.h>
|
|
|
+#include <endian.h>
|
|
|
#include <sgidefs.h>
|
|
|
|
|
|
#ifdef __NR_pread64
|
|
@@ -24,31 +26,39 @@
|
|
|
# define __NR_pread __NR_pread64
|
|
|
#endif
|
|
|
|
|
|
-#ifdef __NR_pread
|
|
|
extern __typeof(pread) __libc_pread;
|
|
|
+extern __typeof(pwrite) __libc_pwrite;
|
|
|
+#ifdef __UCLIBC_HAS_LFS__
|
|
|
+extern __typeof(pread64) __libc_pread64;
|
|
|
+extern __typeof(pwrite64) __libc_pwrite64;
|
|
|
+#endif
|
|
|
+
|
|
|
+#include <bits/kernel_types.h>
|
|
|
+
|
|
|
+
|
|
|
+#ifdef __NR_pread
|
|
|
|
|
|
# if _MIPS_SIM == _MIPS_SIM_ABI64
|
|
|
-# define __NR___libc_pread __NR_pread
|
|
|
+# define __NR___libc_pread __NR_pread
|
|
|
_syscall4(ssize_t, __libc_pread, int, fd, void *, buf, size_t, count, off_t, offset);
|
|
|
weak_alias (__libc_pread, pread)
|
|
|
-# define __NR___libc_pread64 __NR_pread
|
|
|
+# define __NR___libc_pread64 __NR_pread
|
|
|
_syscall4(ssize_t, __libc_pread64, int, fd, void *, buf, size_t, count, off64_t, offset);
|
|
|
weak_alias (__libc_pread64, pread64)
|
|
|
# else
|
|
|
-# define __NR___syscall_pread __NR_pread
|
|
|
-static inline _syscall6(ssize_t, __syscall_pread, int, fd, void *, buf,
|
|
|
+# 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(offset>>31,offset)));
|
|
|
}
|
|
|
weak_alias(__libc_pread,pread)
|
|
|
|
|
|
-# ifdef __UCLIBC_HAS_LFS__
|
|
|
-extern __typeof(pread64) __libc_pread64;
|
|
|
+# ifdef __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)));
|
|
@@ -69,30 +79,28 @@ weak_alias(__libc_pread64,pread64)
|
|
|
#endif
|
|
|
|
|
|
#ifdef __NR_pwrite
|
|
|
-extern __typeof(pwrite) __libc_pwrite;
|
|
|
|
|
|
# if _MIPS_SIM == _MIPS_SIM_ABI64
|
|
|
-# define __NR___libc_pwrite __NR_pwrite
|
|
|
+# define __NR___libc_pwrite __NR_pwrite
|
|
|
_syscall4(ssize_t, __libc_pwrite, int, fd, const void *, buf, size_t, count, off_t, offset);
|
|
|
weak_alias (__libc_pwrite, pwrite)
|
|
|
-# define __NR___libc_pwrite64 __NR_pwrite
|
|
|
+# define __NR___libc_pwrite64 __NR_pwrite
|
|
|
_syscall4(ssize_t, __libc_pwrite64, int, fd, const void *, buf, size_t, count, off64_t, offset);
|
|
|
weak_alias (__libc_pwrite64, pwrite64)
|
|
|
# else
|
|
|
-# define __NR___syscall_pwrite __NR_pwrite
|
|
|
-static inline _syscall6(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
|
|
|
+# 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(offset>>31,offset)));
|
|
|
}
|
|
|
weak_alias(__libc_pwrite,pwrite)
|
|
|
|
|
|
-# ifdef __UCLIBC_HAS_LFS__
|
|
|
-extern __typeof(pwrite64) __libc_pwrite64;
|
|
|
+# ifdef __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)));
|