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17427edd1f
2000-11-20 Ulrich Drepper <drepper@redhat.com> * csu/gmon-start.c: Always have prototype for __gmon_start. * csu/version.c: Add prototypes for __libc_print_version and __libc_main. * iconv/gconv.c: Include gconv_int.h and gconv.h. * iconv/gconv.h (struct __gconv_step): Remove const from __from_name and __to_name. * iconv/gconv_builtin.h: Add ASCII module definitions. * iconv/gconv_conf.c (__gconv_path_elem): Remove const. (add_module): Add cast to avoid warning. Rework construction of strings for new module. * iconv/gconv_db.c (__gconv_alias_compare): Make s1 and s2 const. (derivation_compare): Likewise. * iconv/gconv_dl.c (do_release_shlib): Remove const from nodep. (__gconv_release_shlib): Cast do_release_shlib as parameter for twalk. * iconv/gconv_int.h (__gconv_path_elem): Remove const. (struct gconv_alias): Remove const from fromname and toname. * iconv/gconv_simple.c: Include gconv_builtin.h to get prototypes for loop functions. (internal_ucs4_loop): Use correct const-ness. (ucs4_internal_loop): Likewise. (internal_ucs4le_loop): Likewise. (ucs4le_internal_loop_single): Likewise. * iconv/gconv_trans.c (__gconv_transliterate): Make from_idx, from_tbl, to_idx, to_tbl, winbuf, winbufend const. Change casts in assignments appropriately. (struct known_trans): Remove const from fname. (trans_compare): Make s1 and s2 const. * iconv/loop.c (LOOPFC): Make outend parameter const. Add cast to avoid warning. * iconv/skeleton.c: Remove cast in calls of loop functions. * iconvdata/gconv-modules: Remove US-ASCII definitions. * iconvdata/iso646.c: Remove US_ASCII support. * include/set-hooks.h (DEFINE_HOOK): Also generate prototype. * include/unistd.h: Add __libc_check_standard_fds prototype. * string/bits/string2.h (__mempcpy_args): Add const to casts. * sysdeps/generic/initfini.c: Add prototypes for dummy, _init, and _fini. * sysdeps/generic/libc-start.c: Add prototype for __libc_start_main. * sysdeps/i386/i486/bits/string.h (strcmp): Add const to casts. * sysdeps/unix/sysv/linux/dl-osinfo.h (dl_fatal): Add cast to avoid warning. * sysdeps/unix/sysv/linux/init-first.c: Add prototypes for __libc_init_first and _dl_start. * sysdeps/unix/sysv/linux/mips/clone.S: Fix comments.
112 lines
3.8 KiB
C
112 lines
3.8 KiB
C
/* Operating system specific code for generic dynamic loader functions.
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Copyright (C) 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
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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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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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#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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/* There is no prototype for __sysctl in that file. */
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extern int __sysctl (int *name, int nlen, void *oldval,
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size_t *oldlenp, void *newval, size_t newlen);
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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_sysdep_output (2, str, NULL);
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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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} while (0)
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