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51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <grp.h>
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/* Search for an entry with a matching group ID. */
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struct group *
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DEFUN(getgrgid, (gid), register gid_t gid)
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{
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static PTR info = NULL;
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register FILE *stream;
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register struct group *g;
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if (info == NULL)
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{
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info = __grpalloc();
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if (info == NULL)
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return NULL;
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}
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stream = __grpopen();
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if (stream == NULL)
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return NULL;
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while ((g = __grpread(stream, info)) != NULL)
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if (g->gr_gid == (gid_t) gid)
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break;
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(void) fclose(stream);
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return g;
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}
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