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Date: Wed, 10 Mar 1999 03:20:40 +0900 (JST)
From: SAITOH Masanobu <msaitoh@spa.is.uec.ac.jp>
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To: FreeBSD-gnats-submit@freebsd.org
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Subject: bin/10511: incorrect return value in kvm_read(3) and kvm_write(3)
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>Number:         10511
>Category:       bin
>Synopsis:       incorrect return value in kvm_read(3) and kvm_write(3)
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Mar  9 10:30:01 PST 1999
>Closed-Date:
>Last-Modified:
>Originator:     SAITOH Masanobu
>Release:        all
>Organization:
University of Electro-Communications
>Environment:

	-current

>Description:

	manpage says:

  + RETURN VALUES
  +  Upon success, the number of bytes actually transferred is returned.  Oth-
  +  erwise, -1 is returned.

	but, it returns 0 on error.

	And, some programs ckecks like:

		if (kvm_read(kd, addr, buf, len) < 0)

	This causes serious problems.

>How-To-Repeat:

	This bug cause pidentd to infinite-loops.

>Fix:
	
	return -1 on error.

>Release-Note:
>Audit-Trail:
>Unformatted:


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