bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame^] | 1 | /* common.h - Common functions |
| 2 | |
| 3 | Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch> |
| 4 | |
| 5 | This program is free software: you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation, either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | |
| 18 | On Debian systems, the complete text of the GNU General Public License |
| 19 | can be found in /usr/share/common-licenses/GPL-3 file. |
| 20 | */ |
| 21 | |
| 22 | #include <asm/types.h> |
| 23 | |
| 24 | #ifndef _COMMON_H |
| 25 | #define _COMMON_H |
| 26 | |
| 27 | void die(char *msg, ...) __attribute((noreturn)); |
| 28 | |
| 29 | /* Displays a prinf-style message and terminates the program. */ |
| 30 | |
| 31 | void pdie(char *msg, ...) __attribute((noreturn)); |
| 32 | |
| 33 | /* Like die, but appends an error message according to the state of errno. */ |
| 34 | |
| 35 | void *alloc(int size); |
| 36 | |
| 37 | /* mallocs SIZE bytes and returns a pointer to the data. Terminates the program |
| 38 | if malloc fails. */ |
| 39 | |
| 40 | void *qalloc(void **root, int size); |
| 41 | |
| 42 | /* Like alloc, but registers the data area in a list described by ROOT. */ |
| 43 | |
| 44 | void qfree(void **root); |
| 45 | |
| 46 | /* Deallocates all qalloc'ed data areas described by ROOT. */ |
| 47 | |
| 48 | int min(int a, int b); |
| 49 | |
| 50 | /* Returns the smaller integer value of a and b. */ |
| 51 | |
| 52 | char get_key(char *valid, char *prompt); |
| 53 | |
| 54 | /* Displays PROMPT and waits for user input. Only characters in VALID are |
| 55 | accepted. Terminates the program on EOF. Returns the character. */ |
| 56 | |
| 57 | #endif |