LXR toybox/toys/other/fallocate.c

   1/* fallocate.c - Preallocate space to a file
   2 *
   3 * Copyright 2013 Felix Janda <felix.janda@posteo.de>
   4 *
   5 * No standard
   6
   7USE_FALLOCATE(NEWTOY(fallocate, ">1l#|o#", TOYFLAG_USR|TOYFLAG_BIN))
   8
   9config FALLOCATE
  10  bool "fallocate"
  11  default y
  12  help
  13    usage: fallocate [-l size] [-o offset] file
  14
  15    Tell the filesystem to allocate space for a file.
  16*/
  17
  18#define FOR_fallocate
  19#include "toys.h"
  20
  21GLOBALS(
  22  long o, l;
  23)
  24
  25void fallocate_main(void)
  26{
  27  int fd = xcreate(*toys.optargs, O_RDWR | O_CREAT, 0644);
  28  if ((errno = posix_fallocate(fd, TT.o, TT.l))) perror_exit("fallocate");
  29  if (CFG_TOYBOX_FREE) close(fd);
  30}
  31