f984dbba70
. move mfs-specific struct, constants to mfs/, so mfs-specific, on-disk format structs and consts are fully isolated from generic structs and functions . removes de and readfs utils
54 lines
898 B
C
54 lines
898 B
C
/* Ben Gras
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*
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* Based on sizeup() in mkfs.c.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <machine/partition.h>
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#include <minix/partition.h>
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#include <minix/u64.h>
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#include <sys/ioc_disk.h>
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#include <stdio.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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unsigned long sizeup(char *);
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int main(int argc, char *argv[])
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{
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if(argc != 2) {
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fprintf(stderr, "Usage: %s <device>\n", argv[0]);
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return 1;
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}
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printf("%lu\n", sizeup(argv[1]));
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return 0;
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}
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unsigned long sizeup(device)
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char *device;
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{
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int fd;
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struct partition entry;
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unsigned long d;
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if ((fd = open(device, O_RDONLY)) == -1) {
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perror("sizeup open");
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exit(1);
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}
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if (ioctl(fd, DIOCGETP, &entry) == -1) {
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perror("sizeup ioctl");
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exit(1);
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}
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close(fd);
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d = div64u(entry.size, 512);
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return d;
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}
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