Date: Wed, 22 Oct 1997 20:23:51 -0700 (PDT) From: Kazutaka YOKOTA <yokota@FreeBSD.ORG> To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-sys@FreeBSD.ORG Subject: cvs commit: src/sys/i386/isa syscons.c syscons.h Message-ID: <199710230323.UAA07704@freefall.freebsd.org>
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yokota 1997/10/22 20:23:51 PDT
Modified files:
sys/i386/isa syscons.c syscons.h
Log:
Reject unreasonable values passed to CONS_HISTORY ioctl. It did not
check the value and caused kernel panic when a large value was given.
- Move the configuration option SC_HISTORY_SIZE from syscons.h to
syscons.c.
- Define the maximum total number of history lines of all consoles.
It is SC_HISTORY_SIZE*MAXCONS or 1000*MAXCONS; whichever is larger.
CONS_HISTORY will allow the user to set the history size up to
SC_HISTORY_SIZE unconditionally (or the current height of the console
if it is larger than SC_HISTORY_SIZE). If the user requests a larger
buffer, it will be granted only if the total number of all allocated
history lines and the requested number of lines won't exceed the maximum.
- Don't free the previous history buffer and leave the history buffer
pointer holding a invalid pointer. Set the pointer to NULL first, then
free the buffer.
PR: bin/4592
Revision Changes Path
1.235 +83 -21 src/sys/i386/isa/syscons.c
1.35 +1 -5 src/sys/i386/isa/syscons.h
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