1 /* common.h - Common functions
3 Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch>
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.
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.
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/>.
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.
22 # include <asm/types.h>
27 void die(char *msg,...) __attribute((noreturn));
29 /* Displays a prinf-style message and terminates the program. */
31 void pdie(char *msg,...) __attribute((noreturn));
33 /* Like die, but appends an error message according to the state of errno. */
35 void *alloc(int size);
37 /* mallocs SIZE bytes and returns a pointer to the data. Terminates the program
40 void *qalloc(void **root,int size);
42 /* Like alloc, but registers the data area in a list described by ROOT. */
44 void qfree(void **root);
46 /* Deallocates all qalloc'ed data areas described by ROOT. */
50 /* Returns the smaller integer value of a and b. */
52 char get_key(char *valid,char *prompt);
54 /* Displays PROMPT and waits for user input. Only characters in VALID are
55 accepted. Terminates the program on EOF. Returns the character. */