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Fix ``dd if=/dev/zero of=/dev/daN'' on the Alpha by allowing the label

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to be overwritten.

Submitted by:	green
This commit is contained in:
David E. O'Brien 2000-05-24 06:47:10 +00:00
parent 6e067727a7
commit 015a53cfff
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=60859
1 changed files with 8 additions and 1 deletions
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9
bin/dd/dd.c
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@ -52,6 +52,7 @@ static const char rcsid[] =
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/conf.h>
#include <sys/disklabel.h>
#include <sys/filio.h>
#include <ctype.h>
@ -218,8 +219,14 @@ getfdtype(io)
} else {
if (type & D_TAPE)
io->flags |= ISTAPE;
else if (type & (D_DISK | D_MEM))
else if (type & (D_DISK | D_MEM)) {
if (type & D_DISK) {
const int one = 1;
(void)ioctl(io->fd, DIOCWLABEL, &one);
}
io->flags |= ISSEEK;
}
if (S_ISCHR(sb.st_mode) && (type & D_TAPE) == 0)
io->flags |= ISCHR;
}