minix/lib/libc/other/sizeup.c
Ben Gras 4d4057d8a2 netbsd fsck driver import
. fsck driver parses /etc/fstab and invokes sub-fscks
	. further simplifies fs handling in rc
2011-12-22 23:07:15 +01:00

52 lines
1.2 KiB
C

#include <sys/cdefs.h>
#include "namespace.h"
#include <lib.h>
#include <minix/u64.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <minix/config.h>
#include <minix/const.h>
#include <minix/type.h>
#include <minix/minlib.h>
#include <minix/partition.h>
#include <sys/ioc_disk.h>
#include <unistd.h>
/*================================================================
* minix_sizeup - determine device size
*===============================================================*/
int minix_sizeup(device, bytes)
char *device;
u64_t *bytes;
{
int fd;
struct partition entry;
struct stat st;
if ((fd = open(device, O_RDONLY)) == -1) {
if (errno != ENOENT)
perror("sizeup open");
return -1;
}
if (ioctl(fd, DIOCGETP, &entry) == -1) {
perror("sizeup ioctl");
if(fstat(fd, &st) < 0) {
perror("fstat");
entry.size = cvu64(0);
} else {
entry.size = cvu64(st.st_size);
}
}
close(fd);
*bytes = entry.size;
return 0;
}