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

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

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
sys/kern/imgact_gzip.c
View File

@ -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;