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authorUlrich Drepper <drepper@redhat.com>1999-12-08 23:48:24 +0000
committerUlrich Drepper <drepper@redhat.com>1999-12-08 23:48:24 +0000
commitd587d83bd9825c431456774321bfd0d5eabe7fee (patch)
tree26a083c0bf27e914ae70e4e8a03e62b0f52c8c9d /sysdeps/unix/sysv/linux/truncate64.c
parent49f2be5b0eea30507a77e9467d0ef2c697953bca (diff)
downloadglibc-d587d83bd9825c431456774321bfd0d5eabe7fee.tar.gz
Update.
* sysdeps/unix/sysv/linux/getrlimit.c: Remove K&R compatibility. * sysdeps/unix/sysv/linux/kernel-features.h: Define __ASSUME_TRUNCATE64_SYSCALL and __ASSUME_MMAP2_SYSCALL for 2.3.31 on x86. * sysdeps/unix/sysv/linux/ftruncate64.c: New file. * sysdeps/unix/sysv/linux/truncate64.c: New file. * sysdeps/unix/sysv/linux/i386/mmap.S: Allow using mmap2. * sysdeps/unix/sysv/linux/i386/mmap64.S: New file.
Diffstat (limited to 'sysdeps/unix/sysv/linux/truncate64.c')
-rw-r--r--sysdeps/unix/sysv/linux/truncate64.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/truncate64.c b/sysdeps/unix/sysv/linux/truncate64.c
new file mode 100644
index 0000000000..0a20547789
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/truncate64.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library 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.
+
+ 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+
+#include "kernel-features.h"
+
+#ifdef __NR_truncate64
+static int have_no_truncate64;
+
+extern int __syscall_truncate64 (int fd, int high_length, int low_length);
+
+
+/* Truncate the file FD refers to to LENGTH bytes. */
+int
+truncate64 (path, length)
+ const char *path;
+ off64_t length;
+{
+#ifndef __ASSUME_TRUNCATE64_SYSCALL
+ if (! have_no_truncate64)
+#endif
+ {
+ int result = INLINE_SYSCALL (truncate64, 3, path, length >> 32,
+ length & 0xffffffff);
+
+#ifndef __ASSUME_TRUNCATE64_SYSCALL
+ if (result != -1 || errno != ENOSYS)
+#endif
+ return result;
+
+#ifndef __ASSUME_TRUNCATE64_SYSCALL
+ have_no_truncate64 = 1;
+#endif
+ }
+
+#ifndef __ASSUME_TRUNCATE64_SYSCALL
+ if ((off_t) length != length)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+ return truncate (path, (off_t) length);
+#endif
+}
+
+#else
+/* Use the generic implementation. */
+# include <sysdeps/generic/truncate64.c>
+#endif