| /* Minimum guaranteed maximum values for system limits. Linux version. |
| Copyright (C) 1993-2014 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 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/>. */ |
| |
| /* The kernel header pollutes the namespace with the NR_OPEN symbol |
| and defines LINK_MAX although filesystems have different maxima. A |
| similar thing is true for OPEN_MAX: the limit can be changed at |
| runtime and therefore the macro must not be defined. Remove this |
| after including the header if necessary. */ |
| #ifndef NR_OPEN |
| # define __undef_NR_OPEN |
| #endif |
| #ifndef LINK_MAX |
| # define __undef_LINK_MAX |
| #endif |
| #ifndef OPEN_MAX |
| # define __undef_OPEN_MAX |
| #endif |
| #ifndef ARG_MAX |
| # define __undef_ARG_MAX |
| #endif |
| |
| /* The kernel sources contain a file with all the needed information. */ |
| #include <linux/limits.h> |
| |
| /* Have to remove NR_OPEN? */ |
| #ifdef __undef_NR_OPEN |
| # undef NR_OPEN |
| # undef __undef_NR_OPEN |
| #endif |
| /* Have to remove LINK_MAX? */ |
| #ifdef __undef_LINK_MAX |
| # undef LINK_MAX |
| # undef __undef_LINK_MAX |
| #endif |
| /* Have to remove OPEN_MAX? */ |
| #ifdef __undef_OPEN_MAX |
| # undef OPEN_MAX |
| # undef __undef_OPEN_MAX |
| #endif |
| /* Have to remove ARG_MAX? */ |
| #ifdef __undef_ARG_MAX |
| # undef ARG_MAX |
| # undef __undef_ARG_MAX |
| #endif |
| |
| /* Maximum amount by which a process can descrease its asynchronous I/O |
| priority level. */ |
| #define AIO_PRIO_DELTA_MAX 20 |
| |
| /* Maximum tty name length. */ |
| #define TTY_NAME_MAX 32 |
| |
| /* Maximum login name length. This is arbitrary. */ |
| #define LOGIN_NAME_MAX 256 |
| |
| /* Maximum host name length. */ |
| #define HOST_NAME_MAX 64 |
| |
| /* Maximum message queue priority level. */ |
| #define MQ_PRIO_MAX 32768 |