NAME¶
User::grent - by-name interface to Perl's built-in getgr*() functions
SYNOPSIS¶
use User::grent;
$gr = getgrgid(0) or die "No group zero";
if ( $gr->name eq 'wheel' && @{$gr->members} > 1 ) {
print "gid zero name wheel, with other members";
}
use User::grent qw(:FIELDS);
getgrgid(0) or die "No group zero";
if ( $gr_name eq 'wheel' && @gr_members > 1 ) {
print "gid zero name wheel, with other members";
}
$gr = getgr($whoever);
DESCRIPTION¶
This module's default exports override the core
getgrent(),
getgruid(), and
getgrnam() functions, replacing them with
versions that return "User::grent" objects. This object has methods
that return the similarly named structure field name from the C's passwd
structure from
grp.h; namely name, passwd, gid, and members (not mem).
The first three return scalars, the last an array reference.
You may also import all the structure fields directly into your namespace as
regular variables using the :FIELDS import tag. (Note that this still
overrides your core functions.) Access these fields as variables named with a
preceding "gr_". Thus, "$group_obj->gid()" corresponds
to $gr_gid if you import the fields. Array references are available as regular
array variables, so "@{ $group_obj->members() }" would be simply
@gr_members.
The
getpw() function is a simple front-end that forwards a numeric
argument to
getpwuid() and the rest to
getpwnam().
To access this functionality without the core overrides, pass the
"use" an empty import list, and then access function functions with
their full qualified names. On the other hand, the built-ins are still
available via the "CORE::" pseudo-package.
NOTE¶
While this class is currently implemented using the Class::Struct module to
build a struct-like class, you shouldn't rely upon this.
AUTHOR¶
Tom Christiansen