PWCACHE(3)               BSD Library Functions Manual               PWCACHE(3)

NAME
     pwcache -- cache password and group entries

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##include <>

     char *
     userfromuid(uidt uid, int nouser);

     ##include <>

     char *
     groupfromgid(gidt gid, int nogroup);

DESCRIPTION
     The userfromuid() function returns the user name associated with the
     argument uid.  The user name is cached so that multiple calls with the
     same uid do not require additional calls to getpwuid(3).  If there is no
     user associated with the uid, a pointer is returned to a string represen-
     tation of the uid, unless the argument nouser is non-zero, in which case
     a NUL pointer is returned.

     The groupfromgid() function returns the group name associated with the
     argument gid.  The group name is cached so that multiple calls with the
     same gid do not require additional calls to getgrgid(3).  If there is no
     group associated with the gid, a pointer is returned to a string repre-
     sentation of the gid, unless the argument nogroup is non-zero, in which
     case a NUL pointer is returned.

SEE ALSO
     getgrgid(3), getpwuid(3)

HISTORY
     The userfromuid() and groupfromgid() functions first appeared in
     4.4BSD.

BSD                              June 9, 1993                              BSD