readahead.c - ubase - suckless linux base utils
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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 }