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85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
/*
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* Copyright (c) 1999 Sendmail, Inc. and its suppliers.
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* All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*
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*/
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/*
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** The following test program tries the pathconf(2) routine. It should
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** be run in a non-NFS-mounted directory (e.g., /tmp) and on remote (NFS)
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** mounted directories running both NFS-v2 and NFS-v3 from systems that
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** both do and do not permit file giveaway.
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*/
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#include <sys/types.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#ifdef EX_OK
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# undef EX_OK /* unistd.h may have another use for this */
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#endif /* EX_OK */
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#include <sysexits.h>
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#ifndef lint
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static char id[] = "@(#)$Id: t_pathconf.c,v 8.6 2001/09/23 03:35:41 ca Exp $";
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#endif /* ! lint */
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int fd;
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int i;
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char tbuf[100];
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extern int errno;
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if (geteuid() == 0)
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{
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printf("*** Run me as a non-root user! ***\n");
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exit(EX_USAGE);
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}
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strcpy(tbuf, "TXXXXXX");
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fd = mkstemp(tbuf);
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if (fd < 0)
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{
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printf("*** Could not create test file %s\n", tbuf);
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exit(EX_CANTCREAT);
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}
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errno = 0;
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i = pathconf(".", _PC_CHOWN_RESTRICTED);
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printf("pathconf(.) returns %2d, errno = %d\n", i, errno);
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errno = 0;
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i = pathconf(tbuf, _PC_CHOWN_RESTRICTED);
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printf("pathconf(%s) returns %2d, errno = %d\n", tbuf, i, errno);
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errno = 0;
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i = fpathconf(fd, _PC_CHOWN_RESTRICTED);
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printf("fpathconf(%s) returns %2d, errno = %d\n", tbuf, i, errno);
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if (errno == 0 && i >= 0)
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{
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/* so it claims that it doesn't work -- try anyhow */
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printf(" fpathconf claims that chown is safe ");
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if (fchown(fd, 1, 1) >= 0)
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printf("*** but fchown works anyhow! ***\n");
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else
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printf("and fchown agrees\n");
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}
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else
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{
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/* well, let's see what really happens */
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printf(" fpathconf claims that chown is not safe ");
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if (fchown(fd, 1, 1) >= 0)
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printf("as indeed it is not\n");
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else
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printf("*** but in fact it is safe ***\n");
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}
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(void) unlink(tbuf);
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exit(EX_OK);
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}
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