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	readahead.c - ubase - suckless linux base utils
	git clone git://git.suckless.org/ubase
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	---
	readahead.c (579B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <fcntl.h>
	3 #include <limits.h>
	4 #include <stdio.h>
	5 #include <stdlib.h>
	6
	7 #include "util.h"
	8
	9 static void
	10 usage(void)
	11 {
	12 eprintf("usage: %s file...\n", argv0);
	13 }
	14
	15 int
	16 main(int argc, char *argv[])
	17 {
	18 FILE *fp;
	19
	20 ARGBEGIN {
	21 default:
	22 usage();
	23 } ARGEND;
	24
	25 if (argc == 0)
	26 usage();
	27
	28 for (; argc > 0; argc--, argv++) {
	29 if (!(fp = fopen(argv[0], "r"))) {
	30 weprintf("fopen %s:", argv[0]);
	31 continue;
	32 }
	33 if (readahead(fileno(fp), 0, -1) < 0)
	34 weprintf("readahead %s:", argv[0]);
	35 fclose(fp);
	36 }
	37 return 0;
	38 }