Do not allow duplicate group id in groupmod unless -o is specified.
Closes PR bin/40393
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@ -1,4 +1,4 @@
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/* $NetBSD: user.c,v 1.121 2009/03/11 14:18:03 christos Exp $ */
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/* $NetBSD: user.c,v 1.122 2009/03/18 04:59:45 mike Exp $ */
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/*
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* Copyright (c) 1999 Alistair G. Crooks. All rights reserved.
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@ -33,7 +33,7 @@
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1999\
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The NetBSD Foundation, Inc. All rights reserved.");
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__RCSID("$NetBSD: user.c,v 1.121 2009/03/11 14:18:03 christos Exp $");
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__RCSID("$NetBSD: user.c,v 1.122 2009/03/18 04:59:45 mike Exp $");
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#endif
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#include <sys/types.h>
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@ -2350,6 +2350,10 @@ groupmod(int argc, char **argv)
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if (dupgid && gid < 0) {
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errx(EXIT_FAILURE, "Duplicate which gid?");
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}
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if (!dupgid && getgrgid((gid_t) gid) != NULL) {
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errx(EXIT_FAILURE, "Can't modify group: gid %d is a duplicate",
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gid);
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}
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if ((grp = find_group_info(*argv)) == NULL) {
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errx(EXIT_FAILURE, "Can't find group `%s' to modify", *argv);
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}
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