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2002-01-30 Ulrich Drepper <drepper@redhat.com> * Versions.def [ld]: Add GLIBC_2.3. * elf/dl-addr.c: Move global variables for SHARED code in struct _rtld_global. Export this struct, remove all exports for the signal variables. * elf/dl-close.c: Likewise. * elf/dl-conflict.c: Likewise. * elf/dl-debug.c: Likewise. * elf/dl-deps.c: Likewise. * elf/dl-dst.h: Likewise. * elf/dl-error.c: Likewise. * elf/dl-fini.c: Likewise. * elf/dl-init.c: Likewise. * elf/dl-iteratephdr.c: Likewise. * elf/dl-libc.c: Likewise. * elf/dl-load.c: Likewise. * elf/dl-lookup.c: Likewise. * elf/dl-minimal.c: Likewise. * elf/dl-object.c: Likewise. * elf/dl-open.c: Likewise. * elf/dl-profile.c: Likewise. * elf/dl-profstub.c: Likewise. * elf/dl-reloc.c: Likewise. * elf/dl-runtime.c: Likewise. * elf/dl-support.c: Likewise. * elf/dl-sym.c: Likewise. * elf/dl-version.c: Likewise. * elf/do-lookup.h: Likewise. * elf/do-rel.h: Likewise. * elf/dynamic-link.h: Likewise. * elf/rtld.c: Likewise. * sysdeps/generic/dl-cache.c: Likewise. * sysdeps/generic/dl-sysdep.c: Likewise. * sysdeps/generic/ldsodefs.h: Likewise. * sysdeps/generic/libc-start.c: Likewise. * sysdeps/i386/dl-machine.h: Likewise. * sysdeps/ia64/dl-fptr.c: Likewise. * sysdeps/ia64/dl-machine.h: Likewise. * sysdeps/unix/sysv/linux/dl-librecon.h: Likewise. * sysdeps/unix/sysv/linux/dl-origin.c: Likewise. * sysdeps/unix/sysv/linux/dl-osinfo.h: Likewise. * sysdeps/unix/sysv/linux/getclktck.c: Likewise. * sysdeps/unix/sysv/linux/getpagesize.c: Likewise. * sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise. * sysdeps/unix/sysv/linux/ia64/dl-static.c: Likewise. * sysdeps/unix/sysv/linux/ia64/getpagesize.c: Likewise. * malloc/thread-m.h: Spinlock definitions for x86/x86_64.
109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
/* Operating system specific code for generic dynamic loader functions.
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Copyright (C) 2000, 2001, 2002 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <string.h>
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#include <sys/sysctl.h>
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#include <sys/utsname.h>
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#include "kernel-features.h"
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#ifndef MIN
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# define MIN(a,b) (((a)<(b))?(a):(b))
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#endif
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#ifdef SHARED
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/* This is the function used in the dynamic linker to print the fatal error
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message. */
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static inline void
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__attribute__ ((__noreturn__))
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dl_fatal (const char *str)
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{
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_dl_dprintf (2, str);
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_exit (1);
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}
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#endif
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#define DL_SYSDEP_OSCHECK(FATAL) \
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do { \
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/* Test whether the kernel is new enough. This test is only \
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performed if the library is not compiled to run on all \
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kernels. */ \
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if (__LINUX_KERNEL_VERSION > 0) \
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{ \
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char bufmem[64]; \
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char *buf = bufmem; \
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unsigned int version; \
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int parts; \
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char *cp; \
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struct utsname uts; \
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\
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/* Try the uname syscall */ \
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if (__uname (&uts)) \
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{ \
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/* This was not successful. Now try reading the /proc \
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filesystem. */ \
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ssize_t reslen; \
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int fd = __open ("/proc/sys/kernel/osrelease", O_RDONLY); \
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if (fd == -1 \
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|| (reslen = __read (fd, bufmem, sizeof (bufmem))) <= 0) \
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/* This also didn't work. We give up since we cannot \
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make sure the library can actually work. */ \
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FATAL ("FATAL: cannot determine library version\n"); \
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__close (fd); \
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buf[MIN (reslen, (ssize_t) sizeof (bufmem) - 1)] = '\0'; \
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} \
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else \
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buf = uts.release; \
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\
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/* Now convert it into a number. The string consists of at most \
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three parts. */ \
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version = 0; \
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parts = 0; \
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cp = buf; \
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while ((*cp >= '0') && (*cp <= '9')) \
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{ \
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unsigned int here = *cp++ - '0'; \
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\
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while ((*cp >= '0') && (*cp <= '9')) \
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{ \
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here *= 10; \
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here += *cp++ - '0'; \
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} \
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\
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++parts; \
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version <<= 8; \
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version |= here; \
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\
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if (*cp++ != '.') \
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/* Another part following? */ \
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break; \
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} \
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\
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if (parts < 3) \
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version <<= 8 * (3 - parts); \
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\
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/* Now we can test with the required version. */ \
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if (version < __LINUX_KERNEL_VERSION) \
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/* Not sufficent. */ \
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FATAL ("FATAL: kernel too old\n"); \
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\
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GL(dl_osversion) = version; \
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} \
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} while (0)
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