On Fri, Aug 24, 2001 at 06:38:17PM -0400, Adam Slattery wrote:
> lckpwdf(3) - undocumented, does it protect /etc/shadow?
>From lckpwdf(3C) (Solaris 8):
SYNOPSIS
#include <shadow.h>
int lckpwdf(void);
int ulckpwdf(void);
DESCRIPTION
The lckpwdf() and ulckpwdf() functions enable modification
access to the password databases through the lock file. A
process first uses lckpwdf() to lock the lock file, thereby
gaining exclusive rights to modify the /etc/passwd or
/etc/shadow password database. See passwd(4) and shadow(4).
Upon completing modifications, a process should release the
lock on the lock file using ulckpwdf(). This mechanism
prevents simultaneous modification of the password data-
bases. The lock file, /etc/.pwd.lock, is used to coordinate
modification access to the password databases /etc/passwd
and /etc/shadow.
Mike
