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authorEric Andersen <andersen@codepoet.org>2002-04-24 18:43:48 +0000
committerEric Andersen <andersen@codepoet.org>2002-04-24 18:43:48 +0000
commitbce1aacf14692b1f1c776f8f1bbbfc4dd085405e (patch)
treede43803b277589f034c6690215b8f067eaa88e63 /libc/sysdeps
parent15844e561868cbf5b580941d6dc5118d116a0a1e (diff)
Add support for mmap64
-Erik
Diffstat (limited to 'libc/sysdeps')
-rw-r--r--libc/sysdeps/linux/common/Makefile2
-rw-r--r--libc/sysdeps/linux/common/mmap64.c52
2 files changed, 53 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile
index 3a4b5c92b..62dc66ecc 100644
--- a/libc/sysdeps/linux/common/Makefile
+++ b/libc/sysdeps/linux/common/Makefile
@@ -33,7 +33,7 @@ CSRC= waitpid.c kernel_version.c statfix.c getdnnm.c gethstnm.c \
mkfifo.c setegid.c wait.c getpagesize.c seteuid.c \
wait3.c setpgrp.c getdtablesize.c create_module.c ptrace.c \
cmsg_nxthdr.c statfix64.c longjmp.c open64.c ftruncate64.c \
- truncate64.c getrlimit64.c setrlimit64.c creat64.c
+ truncate64.c getrlimit64.c setrlimit64.c creat64.c mmap64.c
ifneq ($(strip $(EXCLUDE_BRK)),true)
CSRC+=sbrk.c
endif
diff --git a/libc/sysdeps/linux/common/mmap64.c b/libc/sysdeps/linux/common/mmap64.c
new file mode 100644
index 000000000..fba0eb6f8
--- /dev/null
+++ b/libc/sysdeps/linux/common/mmap64.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Daniel Jacobowitz <dan@debian.org>, 1999.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sysdep.h>
+#include <sys/mman.h>
+
+#if defined __UCLIBC_HAVE_LFS__
+
+#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS != 64
+#undef _FILE_OFFSET_BITS
+#define _FILE_OFFSET_BITS 64
+#endif
+#ifndef __USE_LARGEFILE64
+# define __USE_LARGEFILE64 1
+#endif
+/* 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
+
+#undef creat
+__ptr_t mmap64(__ptr_t addr, size_t len, int prot, int flags, int fd, off64_t offset)
+{
+ if (offset != (off_t) offset || (offset + len) != (off_t) (offset + len))
+ {
+ __set_errno (EINVAL);
+ return MAP_FAILED;
+ }
+
+ return mmap (addr, len, prot, flags, fd, (off_t) offset);
+}
+#endif /* __UCLIBC_HAVE_LFS__ */
+