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#include <minix/paths.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
int
main(int argc, char *argv[])
{
int fd;
signed long size;
char *d;
if(argc < 2 || argc > 3) {
fprintf(stderr, "usage: %s <size in kB> [device]\n",
argv[0]);
return 1;
}
d = argc == 2 ? _PATH_RAMDISK : argv[2];
if((fd=open(d, O_RDONLY)) < 0) {
perror(d);
return 1;
}
#define KFACTOR 1024
size = atol(argv[1])*KFACTOR;
if(size < 0) {
fprintf(stderr, "size should be non-negative.\n");
return 1;
}
if(ioctl(fd, MIOCRAMSIZE, &size) < 0) {
perror("MIOCRAMSIZE");
return 1;
}
fprintf(stdout, "size on %s set to %ldkB\n", d, size/KFACTOR);
return 0;
}
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