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 58