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Use copyout() instead of bcopy() to copy the image to user space.

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bcopy() caused panics under heavy paging (not quite as suspected -
the kernel stack seemed to get corrupted).

Fixed long lines.

Reviewed by:	phk
This commit is contained in:
Bruce Evans 1998-06-16 14:36:40 +00:00
parent eca52014bd
commit f95ac73519
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=37015
1 changed files with 7 additions and 5 deletions
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12
sys/kern/imgact_gzip.c
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@ -6,7 +6,7 @@
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $Id: imgact_gzip.c,v 1.31 1997/09/02 20:05:34 bde Exp $
* $Id: imgact_gzip.c,v 1.32 1997/12/14 19:36:24 jdp Exp $
*
* This module handles execution of a.out files which have been run through
* "gzip". This saves diskspace, but wastes cpu-cycles and VM.
@ -341,12 +341,13 @@ Flush(void *vp, u_char * ptr, u_long siz)
}
if (gz->file_offset == 0) {
q = (u_char *) gz->virtual_offset;
bcopy(&gz->a_out, q, sizeof gz->a_out);
copyout(&gz->a_out, q, sizeof gz->a_out);
}
}
}
/* Skip over zero-padded first PAGE if needed */
if (gz->output < gz->file_offset && (gz->output + siz) > gz->file_offset) {
if (gz->output < gz->file_offset &&
gz->output + siz > gz->file_offset) {
i = min(siz, gz->file_offset - gz->output);
gz->output += i;
p += i;
@ -354,8 +355,9 @@ Flush(void *vp, u_char * ptr, u_long siz)
}
if (gz->output >= gz->file_offset && gz->output < gz->file_end) {
i = min(siz, gz->file_end - gz->output);
q = (u_char *) gz->virtual_offset + gz->output - gz->file_offset;
bcopy(p, q, i);
q = (u_char *) gz->virtual_offset +
gz->output - gz->file_offset;
copyout(p, q, i);
gz->output += i;
p += i;
siz -= i;