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remove_drive: correctly obliterate the magic number.

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Reported-by: 	phk
This commit is contained in:
Greg Lehey 2000-05-04 07:35:03 +00:00
parent cf53cf132b
commit 46aebdeaea
1 changed files with 15 additions and 7 deletions
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22
sys/dev/vinum/vinumio.c
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@ -261,20 +261,28 @@ close_locked_drive(struct drive *drive)
/*
* Remove drive from the configuration.
* Caller must ensure that it isn't active
* Caller must ensure that it isn't active.
*/
void
remove_drive(int driveno)
{
struct drive *drive = &vinum_conf.drive[driveno];
int64_t nomagic = VINUM_NOMAGIC; /* no magic number */
struct vinum_hdr *vhdr; /* buffer for header */
int error;
if (drive->state > drive_referenced) { /* real drive */
if (drive->state == drive_up)
write_drive(drive, /* obliterate the magic, but leave a hint */
(char *) &nomagic,
8,
VINUM_LABEL_OFFSET);
if (drive->state == drive_up) {
vhdr = (struct vinum_hdr *) Malloc(VINUMHEADERLEN); /* allocate buffer */
CHECKALLOC(vhdr, "Can't allocate memory");
error = read_drive(drive, (void *) vhdr, VINUMHEADERLEN, VINUM_LABEL_OFFSET);
if (error)
drive->lasterror = error;
else {
vhdr->magic = VINUM_NOMAGIC; /* obliterate the magic, but leave the rest */
write_drive(drive, (void *) vhdr, VINUMHEADERLEN, VINUM_LABEL_OFFSET);
}
Free(vhdr);
}
free_drive(drive); /* close it and free resources */
save_config(); /* and save the updated configuration */
}