| /* Optional code to distinguish library flavours. |
| Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Jakub Jelinek <jakub@redhat.com>, 2001. |
| |
| 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. */ |
| |
| #ifndef _DL_LIBRECON_H |
| #define _DL_LIBRECON_H 1 |
| |
| static inline void __attribute__ ((unused, always_inline)) |
| _dl_osversion_init (char *assume_kernel) |
| { |
| unsigned long int i, j, osversion = 0; |
| char *p = assume_kernel, *q; |
| |
| for (i = 0; i < 3; i++, p = q + 1) |
| { |
| j = __strtoul_internal (p, &q, 0, 0); |
| if (j >= 255 || p == q || (i < 2 && *q && *q != '.')) |
| { |
| osversion = 0; |
| break; |
| } |
| osversion |= j << (16 - 8 * i); |
| if (!*q) |
| break; |
| } |
| if (osversion) |
| GLRO(dl_osversion) = osversion; |
| } |
| |
| /* Recognizing extra environment variables. */ |
| #define EXTRA_LD_ENVVARS_13 \ |
| if (memcmp (envline, "ASSUME_KERNEL", 13) == 0) \ |
| { \ |
| _dl_osversion_init (&envline[14]); \ |
| break; \ |
| } |
| |
| #define DL_OSVERSION_INIT \ |
| do { \ |
| char *assume_kernel = getenv ("LD_ASSUME_KERNEL"); \ |
| if (assume_kernel) \ |
| _dl_osversion_init (assume_kernel); \ |
| } while (0) |
| |
| #endif /* dl-librecon.h */ |
