1 /*
2 * Copyright (c) 1999 Proofpoint, Inc. and its suppliers.
3 * All rights reserved.
4 *
5 * By using this file, you agree to the terms and conditions set
6 * forth in the LICENSE file which can be found at the top level of
7 * the sendmail distribution.
8 *
9 */
10
11 /*
12 ** The following test program tries the pathconf(2) routine. It should
13 ** be run in a non-NFS-mounted directory (e.g., /tmp) and on remote (NFS)
14 ** mounted directories running both NFS-v2 and NFS-v3 from systems that
15 ** both do and do not permit file giveaway.
16 */
17
18 #include <sys/types.h>
19 #include <errno.h>
20 #include <fcntl.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <unistd.h>
24 #include <string.h>
25 #ifdef EX_OK
26 # undef EX_OK /* unistd.h may have another use for this */
27 #endif
28 #include <sysexits.h>
29
30 #ifndef lint
31 static char id[] = "@(#)$Id: t_pathconf.c,v 8.7 2013-11-22 20:52:01 ca Exp $";
32 #endif
33
34 int
main(argc,argv)35 main(argc, argv)
36 int argc;
37 char **argv;
38 {
39 int fd;
40 int i;
41 char tbuf[100];
42 extern int errno;
43
44 if (geteuid() == 0)
45 {
46 printf("*** Run me as a non-root user! ***\n");
47 exit(EX_USAGE);
48 }
49
50 strcpy(tbuf, "TXXXXXX");
51 fd = mkstemp(tbuf);
52 if (fd < 0)
53 {
54 printf("*** Could not create test file %s\n", tbuf);
55 exit(EX_CANTCREAT);
56 }
57 errno = 0;
58 i = pathconf(".", _PC_CHOWN_RESTRICTED);
59 printf("pathconf(.) returns %2d, errno = %d\n", i, errno);
60 errno = 0;
61 i = pathconf(tbuf, _PC_CHOWN_RESTRICTED);
62 printf("pathconf(%s) returns %2d, errno = %d\n", tbuf, i, errno);
63 errno = 0;
64 i = fpathconf(fd, _PC_CHOWN_RESTRICTED);
65 printf("fpathconf(%s) returns %2d, errno = %d\n", tbuf, i, errno);
66 if (errno == 0 && i >= 0)
67 {
68 /* so it claims that it doesn't work -- try anyhow */
69 printf(" fpathconf claims that chown is safe ");
70 if (fchown(fd, 1, 1) >= 0)
71 printf("*** but fchown works anyhow! ***\n");
72 else
73 printf("and fchown agrees\n");
74 }
75 else
76 {
77 /* well, let's see what really happens */
78 printf(" fpathconf claims that chown is not safe ");
79 if (fchown(fd, 1, 1) >= 0)
80 printf("as indeed it is not\n");
81 else
82 printf("*** but in fact it is safe ***\n");
83 }
84 (void) unlink(tbuf);
85 exit(EX_OK);
86 }
87