toys/other/fallocate.c

0f66f451Sopenharmony_ci/* fallocate.c - Preallocate space to a file
0f66f451Sopenharmony_ci *
0f66f451Sopenharmony_ci * Copyright 2013 Felix Janda <felix.janda@posteo.de>
0f66f451Sopenharmony_ci *
0f66f451Sopenharmony_ci * No standard
0f66f451Sopenharmony_ci
0f66f451Sopenharmony_ciUSE_FALLOCATE(NEWTOY(fallocate, ">1l#|o#", TOYFLAG_USR|TOYFLAG_BIN))
0f66f451Sopenharmony_ci
0f66f451Sopenharmony_ciconfig FALLOCATE
0f66f451Sopenharmony_ci  bool "fallocate"
0f66f451Sopenharmony_ci  depends on TOYBOX_FALLOCATE
0f66f451Sopenharmony_ci  default y
0f66f451Sopenharmony_ci  help
0f66f451Sopenharmony_ci    usage: fallocate [-l size] [-o offset] file
0f66f451Sopenharmony_ci
0f66f451Sopenharmony_ci    Tell the filesystem to allocate space for a file.
0f66f451Sopenharmony_ci*/
0f66f451Sopenharmony_ci
0f66f451Sopenharmony_ci#define FOR_fallocate
0f66f451Sopenharmony_ci#include "toys.h"
0f66f451Sopenharmony_ci
0f66f451Sopenharmony_ciGLOBALS(
0f66f451Sopenharmony_ci  long o, l;
0f66f451Sopenharmony_ci)
0f66f451Sopenharmony_ci
0f66f451Sopenharmony_civoid fallocate_main(void)
0f66f451Sopenharmony_ci{
0f66f451Sopenharmony_ci  int fd = xcreate(*toys.optargs, O_RDWR | O_CREAT, 0644);
0f66f451Sopenharmony_ci  if ((errno = posix_fallocate(fd, TT.o, TT.l))) perror_exit("fallocate");
0f66f451Sopenharmony_ci  if (CFG_TOYBOX_FREE) close(fd);
0f66f451Sopenharmony_ci}