d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Straighten out get_params().

Browse Source 
Sponsored by:	DARPA & NAI Labs.
This commit is contained in:
Poul-Henning Kamp 2002-09-20 08:12:51 +00:00
parent fe7d45f8f8
commit 7963fae61f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=103665
1 changed files with 33 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
sbin/fdisk/fdisk.c
View File

@ -749,43 +749,44 @@ write_disk(off_t sector, void *buf)
static int
get_params()
{
int error;
u_int u;
off_t o;
int error;
u_int u;
off_t o;
if (ioctl(fd, DIOCGDINFO, &disklabel) == -1) {
warnx("can't get disk parameters on %s; supplying dummy ones", disk);
dos_cyls = cyls = 1;
dos_heads = heads = 1;
dos_sectors = sectors = 1;
dos_cylsecs = cylsecs = heads * sectors;
disksecs = cyls * heads * sectors;
} else {
dos_cyls = cyls = disklabel.d_ncylinders;
dos_heads = heads = disklabel.d_ntracks;
dos_sectors = sectors = disklabel.d_nsectors;
}
error = ioctl(fd, DIOCGFWSECTORS, &u);
if (error == 0)
sectors = dos_sectors = u;
error = ioctl(fd, DIOCGFWHEADS, &u);
if (error == 0)
heads = dos_heads = u;
if (ioctl(fd, DIOCGDINFO, &disklabel) == -1) {
warnx("can't get disk parameters on %s; supplying dummy ones", disk);
dos_cyls = cyls = 1;
dos_heads = heads = 1;
dos_sectors = sectors = 1;
dos_cylsecs = cylsecs = heads * sectors;
disksecs = cyls * heads * sectors;
}
error = ioctl(fd, DIOCGFWSECTORS, &u);
if (error == 0)
dos_sectors = u;
error = ioctl(fd, DIOCGFWHEADS, &u);
if (error == 0)
dos_heads = u;
error = ioctl(fd, DIOCGSECTORSIZE, &u);
if (error != 0) {
u = 512;
}
error = ioctl(fd, DIOCGMEDIASIZE, &o);
if (error == 0) {
dos_cylsecs = dos_heads * dos_sectors;
disksecs = o / u;
dos_cyls = o / (u * dos_heads * dos_sectors);
return (o / u);
}
dos_cyls = cyls = disklabel.d_ncylinders;
dos_heads = heads = disklabel.d_ntracks;
dos_sectors = sectors = disklabel.d_nsectors;
dos_cylsecs = cylsecs = heads * sectors;
disksecs = cyls * heads * sectors;
error = ioctl(fd, DIOCGSECTORSIZE, &u);
if (error != 0)
u = 512;
return (disksecs);
error = ioctl(fd, DIOCGMEDIASIZE, &o);
if (error == 0) {
disksecs = o / u;
cyls = dos_cyls = o / (u * dos_heads * dos_sectors);
}
return (disksecs);
}