common.h 1.8 KB

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  1. /* common.h - Common functions
  2. Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch>
  3. Copyright (C) 2008-2013 Daniel Baumann <mail@daniel-baumann.ch>
  4. This program is free software: you can redistribute it and/or modify
  5. it under the terms of the GNU General Public License as published by
  6. the Free Software Foundation, either version 3 of the License, or
  7. (at your option) any later version.
  8. This program is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11. GNU General Public License for more details.
  12. You should have received a copy of the GNU General Public License
  13. along with this program. If not, see <http://www.gnu.org/licenses/>.
  14. On Debian systems, the complete text of the GNU General Public License
  15. can be found in /usr/share/common-licenses/GPL-3 file.
  16. */
  17. #include <asm/types.h>
  18. #ifndef _COMMON_H
  19. #define _COMMON_H
  20. void die(char *msg, ...) __attribute((noreturn));
  21. /* Displays a prinf-style message and terminates the program. */
  22. void pdie(char *msg, ...) __attribute((noreturn));
  23. /* Like die, but appends an error message according to the state of errno. */
  24. void *alloc(int size);
  25. /* mallocs SIZE bytes and returns a pointer to the data. Terminates the program
  26. if malloc fails. */
  27. void *qalloc(void **root, int size);
  28. /* Like alloc, but registers the data area in a list described by ROOT. */
  29. void qfree(void **root);
  30. /* Deallocates all qalloc'ed data areas described by ROOT. */
  31. int min(int a, int b);
  32. /* Returns the smaller integer value of a and b. */
  33. char get_key(char *valid, char *prompt);
  34. /* Displays PROMPT and waits for user input. Only characters in VALID are
  35. accepted. Terminates the program on EOF. Returns the character. */
  36. #endif