* csu/Makefile ($(objpfx)version-info.h): Don't use echo -n
unnecessarily. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_STAT64_SYSCALL, __ASSUME_TRUNCATE64_SYSCALL, __ASSUME_NEW_GETRLIMIT_SYSCALL): Define on powerpc for kernels >= 2.3.35. * sysdeps/unix/sysv/linux/powerpc/bits/resource.h: New file. * sysdeps/unix/sysv/linux/powerpc/ftruncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/getrlimit.c: New file. * sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: New file. * sysdeps/unix/sysv/linux/powerpc/mmap64.c: New file. * sysdeps/unix/sysv/linux/powerpc/setrlimit.c: New file. * sysdeps/unix/sysv/linux/powerpc/setrlimit64.c: New file. * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add s_fstat64, s_ftruncate64, s_lstat64, s_mmap2, s_stat64, s_truncate64. * sysdeps/unix/sysv/linux/powerpc/truncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/Versions: New file. * sysdeps/unix/sysv/linux/powerpc/brk.S [!PIC]: Don't access __curbrk off the small data area register. Reported by Andrew Haley <aph@pasanda.cygnus.co.uk>. 2000-01-27 Geoff Keating <geoffk@cygnus.com> * csu/Makefile ($(objpfx)version-info.h): Don't use echo -n unnecessarily. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_STAT64_SYSCALL, __ASSUME_TRUNCATE64_SYSCALL, __ASSUME_NEW_GETRLIMIT_SYSCALL): Define on powerpc for kernels >= 2.3.35. * sysdeps/unix/sysv/linux/powerpc/bits/resource.h: New file. * sysdeps/unix/sysv/linux/powerpc/ftruncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/getrlimit.c: New file. * sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: New file. * sysdeps/unix/sysv/linux/powerpc/mmap64.c: New file. * sysdeps/unix/sysv/linux/powerpc/setrlimit.c: New file. * sysdeps/unix/sysv/linux/powerpc/setrlimit64.c: New file. * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add s_fstat64, s_ftruncate64, s_lstat64, s_mmap2, s_stat64, s_truncate64. * sysdeps/unix/sysv/linux/powerpc/truncate64.c: New file. * sysdeps/unix/sysv/linux/powerpc/Versions: New file. * sysdeps/unix/sysv/linux/powerpc/brk.S [!PIC]: Don't access __curbrk off the small data area register. Reported by Andrew Haley <aph@pasanda.cygnus.co.uk>.
This commit is contained in:
Geoff Keating
parent
c1ed883ffc
commit
053cc7bbc8
27
ChangeLog
27
ChangeLog
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@ -1,3 +1,30 @@
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2000-01-27 Geoff Keating <geoffk@cygnus.com>
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* csu/Makefile ($(objpfx)version-info.h): Don't use echo -n
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unnecessarily.
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* sysdeps/unix/sysv/linux/kernel-features.h
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(__ASSUME_STAT64_SYSCALL, __ASSUME_TRUNCATE64_SYSCALL,
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__ASSUME_NEW_GETRLIMIT_SYSCALL): Define on powerpc for kernels >=
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2.3.35.
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* sysdeps/unix/sysv/linux/powerpc/bits/resource.h: New file.
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* sysdeps/unix/sysv/linux/powerpc/ftruncate64.c: New file.
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* sysdeps/unix/sysv/linux/powerpc/getrlimit.c: New file.
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* sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: New file.
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* sysdeps/unix/sysv/linux/powerpc/mmap64.c: New file.
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* sysdeps/unix/sysv/linux/powerpc/setrlimit.c: New file.
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* sysdeps/unix/sysv/linux/powerpc/setrlimit64.c: New file.
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* sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add
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s_fstat64, s_ftruncate64, s_lstat64, s_mmap2, s_stat64,
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s_truncate64.
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* sysdeps/unix/sysv/linux/powerpc/truncate64.c: New file.
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* sysdeps/unix/sysv/linux/powerpc/Versions: New file.
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* sysdeps/unix/sysv/linux/powerpc/brk.S [!PIC]: Don't access
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__curbrk off the small data area register. Reported by
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Andrew Haley <aph@pasanda.cygnus.co.uk>.
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2000-01-26 Andreas Jaeger <aj@suse.de>
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* Make-dist (+sysdep-tscrs): Add libm-test-ulps.
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@ -1,6 +1,6 @@
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# Makefile for csu code for GNU C library.
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# Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
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# Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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@ -182,8 +182,8 @@ $(objpfx)version-info.h: $(common-objpfx)config.make $(all-Banner-files)
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version=`uname -r`; \
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fi; \
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fi; \
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echo -n "\"Compiled on a Linux $$version system "; \
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echo "on `date +%Y-%m-%d`.\\n\"" ;; \
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echo "\"Compiled on a Linux $$version system" \
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"on `date +%Y-%m-%d`.\\n\"" ;; \
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*) ;; \
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esac; \
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files="$(all-Banner-files)"; \
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|
|
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@ -103,6 +103,13 @@
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# define __ASSUME_STAT64_SYSCALL 1
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#endif
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/* I know for sure that these are in 2.3.35 on powerpc. */
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#if __LINUX_KERNEL_VERSION >= 131875 && defined __powerpc__
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# define __ASSUME_TRUNCATE64_SYSCALL 1
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# define __ASSUME_STAT64_SYSCALL 1
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# define __ASSUME_NEW_GETRLIMIT_SYSCALL 1
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#endif
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/* Linux 2.3.39 introduced 32bit UID/GIDs. */
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#if __LINUX_KERNEL_VERSION >= 131879
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# define __ASSUME_32BITUIDS 1
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|
|
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@ -0,0 +1,6 @@
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libc {
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GLIBC_2.2 {
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# New rlimit interface
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getrlimit; setrlimit; getrlimit64; setrlimit64;
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}
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}
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@ -0,0 +1,205 @@
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/* Bit values & structures for resource limits. Linux version.
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Copyright (C) 1994-99, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
|
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published by the Free Software Foundation; either version 2 of the
|
||||
License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
|
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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Library General Public License for more details.
|
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|
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You should have received a copy of the GNU Library General Public
|
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _SYS_RESOURCE_H
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# error "Never use <bits/resource.h> directly; include <sys/resource.h> instead."
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#endif
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#include <bits/types.h>
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/* Transmute defines to enumerations. The macro re-definitions are
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necessary because some programs want to test for operating system
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features with #ifdef RUSAGE_SELF. In ISO C the reflexive
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definition is a no-op. */
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/* Kinds of resource limit. */
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enum __rlimit_resource
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{
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/* Per-process CPU limit, in seconds. */
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RLIMIT_CPU = 0,
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#define RLIMIT_CPU RLIMIT_CPU
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/* Largest file that can be created, in bytes. */
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RLIMIT_FSIZE = 1,
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#define RLIMIT_FSIZE RLIMIT_FSIZE
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/* Maximum size of data segment, in bytes. */
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RLIMIT_DATA = 2,
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#define RLIMIT_DATA RLIMIT_DATA
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/* Maximum size of stack segment, in bytes. */
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RLIMIT_STACK = 3,
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#define RLIMIT_STACK RLIMIT_STACK
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/* Largest core file that can be created, in bytes. */
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RLIMIT_CORE = 4,
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#define RLIMIT_CORE RLIMIT_CORE
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/* Largest resident set size, in bytes.
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This affects swapping; processes that are exceeding their
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resident set size will be more likely to have physical memory
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taken from them. */
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RLIMIT_RSS = 5,
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#define RLIMIT_RSS RLIMIT_RSS
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/* Number of open files. */
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RLIMIT_NOFILE = 7,
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RLIMIT_OFILE = RLIMIT_NOFILE, /* BSD name for same. */
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#define RLIMIT_NOFILE RLIMIT_NOFILE
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#define RLIMIT_OFILE RLIMIT_OFILE
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/* Address space limit. */
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RLIMIT_AS = 9,
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#define RLIMIT_AS RLIMIT_AS
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/* Number of processes. */
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RLIMIT_NPROC = 6,
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#define RLIMIT_NPROC RLIMIT_NPROC
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/* Locked-in-memory address space. */
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RLIMIT_MEMLOCK = 8,
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#define RLIMIT_MEMLOCK RLIMIT_MEMLOCK
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RLIMIT_NLIMITS = 10,
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RLIM_NLIMITS = RLIMIT_NLIMITS
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#define RLIMIT_NLIMITS RLIMIT_NLIMITS
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#define RLIM_NLIMITS RLIM_NLIMITS
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};
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/* Value to indicate that there is no limit. */
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#ifndef __USE_FILE_OFFSET64
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# define RLIM_INFINITY ((unsigned long int)(~0UL))
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#else
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# define RLIM_INFINITY 0xffffffffffffffffuLL
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#endif
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#ifdef __USE_LARGEFILE64
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# define RLIM64_INFINITY 0xffffffffffffffffuLL
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#endif
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/* We can represent all limits. */
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#define RLIM_SAVED_MAX RLIM_INFINITY
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#define RLIM_SAVED_CUR RLIM_INFINITY
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/* Type for resource quantity measurement. */
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#ifndef __USE_FILE_OFFSET64
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typedef __rlim_t rlim_t;
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#else
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typedef __rlim64_t rlim_t;
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#endif
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#ifdef __USE_LARGEFILE64
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typedef __rlim64_t rlim64_t;
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#endif
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struct rlimit
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{
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/* The current (soft) limit. */
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rlim_t rlim_cur;
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/* The hard limit. */
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rlim_t rlim_max;
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};
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#ifdef __USE_LARGEFILE64
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struct rlimit64
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{
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/* The current (soft) limit. */
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rlim64_t rlim_cur;
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/* The hard limit. */
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rlim64_t rlim_max;
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};
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#endif
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/* Whose usage statistics do you want? */
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enum __rusage_who
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{
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/* The calling process. */
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RUSAGE_SELF = 0,
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#define RUSAGE_SELF RUSAGE_SELF
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/* All of its terminated child processes. */
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RUSAGE_CHILDREN = -1,
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#define RUSAGE_CHILDREN RUSAGE_CHILDREN
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/* Both. */
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RUSAGE_BOTH = -2
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#define RUSAGE_BOTH RUSAGE_BOTH
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};
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#define __need_timeval
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#include <bits/time.h> /* For `struct timeval'. */
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/* Structure which says how much of each resource has been used. */
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struct rusage
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{
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/* Total amount of user time used. */
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struct timeval ru_utime;
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/* Total amount of system time used. */
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struct timeval ru_stime;
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/* Maximum resident set size (in kilobytes). */
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long int ru_maxrss;
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/* Amount of sharing of text segment memory
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with other processes (kilobyte-seconds). */
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long int ru_ixrss;
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/* Amount of data segment memory used (kilobyte-seconds). */
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long int ru_idrss;
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/* Amount of stack memory used (kilobyte-seconds). */
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long int ru_isrss;
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/* Number of soft page faults (i.e. those serviced by reclaiming
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a page from the list of pages awaiting reallocation. */
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||||
long int ru_minflt;
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||||
/* Number of hard page faults (i.e. those that required I/O). */
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||||
long int ru_majflt;
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/* Number of times a process was swapped out of physical memory. */
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long int ru_nswap;
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/* Number of input operations via the file system. Note: This
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and `ru_oublock' do not include operations with the cache. */
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||||
long int ru_inblock;
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/* Number of output operations via the file system. */
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long int ru_oublock;
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||||
/* Number of IPC messages sent. */
|
||||
long int ru_msgsnd;
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||||
/* Number of IPC messages received. */
|
||||
long int ru_msgrcv;
|
||||
/* Number of signals delivered. */
|
||||
long int ru_nsignals;
|
||||
/* Number of voluntary context switches, i.e. because the process
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||||
gave up the process before it had to (usually to wait for some
|
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resource to be available). */
|
||||
long int ru_nvcsw;
|
||||
/* Number of involuntary context switches, i.e. a higher priority process
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||||
became runnable or the current process used up its time slice. */
|
||||
long int ru_nivcsw;
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||||
};
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||||
|
||||
/* Priority limits. */
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||||
#define PRIO_MIN -20 /* Minimum priority a process can have. */
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||||
#define PRIO_MAX 20 /* Maximum priority a process can have. */
|
||||
|
||||
/* The type of the WHICH argument to `getpriority' and `setpriority',
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||||
indicating what flavor of entity the WHO argument specifies. */
|
||||
enum __priority_which
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||||
{
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||||
PRIO_PROCESS = 0, /* WHO is a process ID. */
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||||
#define PRIO_PROCESS PRIO_PROCESS
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||||
PRIO_PGRP = 1, /* WHO is a process group ID. */
|
||||
#define PRIO_PGRP PRIO_PGRP
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||||
PRIO_USER = 2 /* WHO is a user ID. */
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||||
#define PRIO_USER PRIO_USER
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||||
};
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||||
|
|
@ -1,5 +1,5 @@
|
|||
/* brk system call for Linux/ppc.
|
||||
Copyright (C) 1995, 1996, 1997, 1999 Free Software Foundation, Inc.
|
||||
Copyright (C) 1995, 1996, 1997, 1999, 2000 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
|
||||
|
|
@ -36,7 +36,8 @@ ENTRY(__brk)
|
|||
mtlr r4
|
||||
stw r3,0(r5)
|
||||
#else
|
||||
stw r3,__curbrk@sdarel(r13)
|
||||
lis r4,__curbrk@ha
|
||||
stw r3,__curbrk@sdarel(r4)
|
||||
#endif
|
||||
cmplw r6,r3
|
||||
addi r1,r1,16
|
||||
|
|
|
|||
|
|
@ -0,0 +1,76 @@
|
|||
/* Copyright (C) 1997, 1998, 1999, 2000 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_ftruncate64
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
/* The variable is shared between all wrappers around *truncate64 calls. */
|
||||
extern int have_no_truncate64;
|
||||
#endif
|
||||
|
||||
extern int __syscall_ftruncate64 (int fd, off64_t length);
|
||||
|
||||
|
||||
/* Truncate the file FD refers to to LENGTH bytes. */
|
||||
int
|
||||
ftruncate64 (fd, length)
|
||||
int fd;
|
||||
off64_t length;
|
||||
{
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if (! have_no_truncate64)
|
||||
#endif
|
||||
{
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
int saved_errno = errno;
|
||||
#endif
|
||||
int result = __syscall_ftruncate64 (fd, off64_length);
|
||||
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if (result != -1 || errno != ENOSYS)
|
||||
#endif
|
||||
return result;
|
||||
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
__set_errno (saved_errno);
|
||||
have_no_truncate64 = 1;
|
||||
#endif
|
||||
}
|
||||
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if ((off_t) length != length)
|
||||
{
|
||||
__set_errno (EINVAL);
|
||||
return -1;
|
||||
}
|
||||
return __ftruncate (fd, (off_t) length);
|
||||
#endif
|
||||
}
|
||||
|
||||
#else
|
||||
/* Use the generic implementation. */
|
||||
# include <sysdeps/generic/ftruncate64.c>
|
||||
#endif
|
||||
|
|
@ -0,0 +1 @@
|
|||
#include <sysdeps/unix/sysv/linux/i386/getrlimit.c>
|
||||
|
|
@ -0,0 +1 @@
|
|||
#include <sysdeps/unix/sysv/linux/i386/getrlimit64.c>
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Jakub Jelinek <jakub@redhat.com>, 1999.
|
||||
|
||||
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 <errno.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <sys/syscall.h>
|
||||
|
||||
#include <sys/mman.h>
|
||||
|
||||
#include <asm/page.h>
|
||||
|
||||
#include "kernel-features.h"
|
||||
|
||||
#ifdef __NR_mmap2
|
||||
extern int __syscall_mmap2(__ptr_t, size_t, int, int, int, off_t);
|
||||
#ifndef __ASSUME_MMAP2_SYSCALL
|
||||
static int have_no_mmap2;
|
||||
#endif
|
||||
#endif
|
||||
|
||||
__ptr_t
|
||||
__mmap64 (__ptr_t addr, size_t len, int prot, int flags, int fd, off64_t offset)
|
||||
{
|
||||
#ifdef __NR_mmap2
|
||||
if (
|
||||
#ifndef __ASSUME_MMAP2_SYSCALL
|
||||
! have_no_mmap2 &&
|
||||
#endif
|
||||
! (offset & PAGE_MASK))
|
||||
{
|
||||
#ifndef __ASSUME_MMAP2_SYSCALL
|
||||
int saved_errno = errno;
|
||||
#endif
|
||||
/* This will be always 12, no matter what page size is. */
|
||||
int result = INLINE_SYSCALL (mmap2, 6, addr, len, prot, flags,
|
||||
fd, (off_t) (offset >> PAGE_SHIFT));
|
||||
|
||||
#ifndef __ASSUME_MMAP2_SYSCALL
|
||||
if (result != -1 || errno != ENOSYS)
|
||||
#endif
|
||||
return result;
|
||||
|
||||
#ifndef __ASSUME_MMAP2_SYSCALL
|
||||
__set_errno (saved_errno);
|
||||
have_no_mmap2 = 1;
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
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);
|
||||
}
|
||||
|
||||
weak_alias (__mmap64, mmap64)
|
||||
|
|
@ -0,0 +1 @@
|
|||
#include <sysdeps/unix/sysv/linux/i386/setrlimit.c>
|
||||
|
|
@ -0,0 +1 @@
|
|||
#include <sysdeps/unix/sysv/linux/i386/setrlimit64.c>
|
||||
|
|
@ -12,6 +12,8 @@ rt_sigprocmask - rt_sigprocmask 4 __syscall_rt_sigprocmask
|
|||
rt_sigqueueinfo - rt_sigqueueinfo 3 __syscall_rt_sigqueueinfo
|
||||
rt_sigsuspend - rt_sigsuspend 2 __syscall_rt_sigsuspend
|
||||
rt_sigtimedwait - rt_sigtimedwait 4 __syscall_rt_sigtimedwait
|
||||
s_fstat64 fxstat64 fstat64 2 __syscall_fstat64
|
||||
s_ftruncate64 ftruncate64 ftruncate64 3 __syscall_ftruncate64
|
||||
s_getcwd getcwd getcwd 2 __syscall_getcwd
|
||||
s_getdents getdents getdents 3 __syscall_getdents
|
||||
s_getpmsg getpmsg getpmsg 5 __syscall_getpmsg
|
||||
|
|
@ -19,6 +21,8 @@ s_getpriority getpriority getpriority 2 __syscall_getpriority
|
|||
s_getresgid getresgid getresgid 3 __syscall_getresgid
|
||||
s_getresuid getresuid getresuid 3 __syscall_getresuid
|
||||
s_getrlimit getrlimit getrlimit 2 __syscall_getrlimit
|
||||
s_lstat64 lxstat64 lstat64 2 __syscall_lstat64
|
||||
s_mmap2 mmap64 mmap2 6 __syscall_mmap2
|
||||
s_poll poll poll 3 __syscall_poll
|
||||
s_pread64 pread64 pread 5 __syscall_pread
|
||||
s_ptrace ptrace ptrace 4 __syscall_ptrace
|
||||
|
|
@ -30,7 +34,9 @@ s_sigaction sigaction sigaction 3 __syscall_sigaction
|
|||
s_sigpending sigpending sigpending 1 __syscall_sigpending
|
||||
s_sigprocmask sigprocmask sigprocmask 3 __syscall_sigprocmask
|
||||
s_sigsuspend sigsuspend sigsuspend 3 __syscall_sigsuspend
|
||||
s_stat64 xstat64 stat64 2 __syscall_stat64
|
||||
s_sysctl sysctl _sysctl 1 __syscall__sysctl
|
||||
s_truncate64 truncate64 truncate64 3 __syscall_truncate64
|
||||
s_ugetrlimit getrlimit ugetrlimit 2 __syscall_ugetrlimit
|
||||
s_ustat ustat ustat 2 __syscall_ustat
|
||||
s_vfork vfork vfork 0 __syscall_vfork
|
||||
|
|
|
|||
|
|
@ -0,0 +1,76 @@
|
|||
/* Copyright (C) 1997, 1998, 1999, 2000 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
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
/* The variable is shared between all wrappers around *truncate64 calls. */
|
||||
int have_no_truncate64;
|
||||
#endif
|
||||
|
||||
extern int __syscall_truncate64 (const char *path, off64_t 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
|
||||
{
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
int saved_errno = errno;
|
||||
#endif
|
||||
int result = __syscall_truncate64 (path, length);
|
||||
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
if (result != -1 || errno != ENOSYS)
|
||||
#endif
|
||||
return result;
|
||||
|
||||
#ifndef __ASSUME_TRUNCATE64_SYSCALL
|
||||
__set_errno (saved_errno);
|
||||
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
|
||||
Loading…
Reference in New Issue