diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/dl-librecon.h')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/dl-librecon.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/dl-librecon.h b/REORG.TODO/sysdeps/unix/sysv/linux/dl-librecon.h new file mode 100644 index 0000000000..a6e54bed75 --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/dl-librecon.h @@ -0,0 +1,60 @@ +/* Optional code to distinguish library flavours. + Copyright (C) 2001-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#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 */ |