source: trunk/minix/commands/ash/mail.c@ 10

Last change on this file since 10 was 9, checked in by Mattia Monga, 13 years ago

Minix 3.1.2a

File size: 3.3 KB
Line 
1/*-
2 * Copyright (c) 1991 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Kenneth Almquist.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38static char sccsid[] = "@(#)mail.c 5.1 (Berkeley) 3/7/91";
39#endif /* not lint */
40
41/*
42 * Routines to check for mail. (Perhaps make part of main.c?)
43 */
44
45#include "shell.h"
46#include "exec.h" /* defines padvance() */
47#include "var.h"
48#include "output.h"
49#include "memalloc.h"
50#include "error.h"
51#include <sys/types.h>
52#include <sys/stat.h>
53
54
55#define MAXMBOXES 10
56
57
58STATIC int nmboxes; /* number of mailboxes */
59STATIC time_t mailtime[MAXMBOXES]; /* times of mailboxes */
60
61
62
63/*
64 * Print appropriate message(s) if mail has arrived. If the argument is
65 * nozero, then the value of MAIL has changed, so we just update the
66 * values.
67 */
68
69void
70chkmail(silent) {
71 register int i;
72 char *mpath;
73 char *p;
74 register char *q;
75 struct stackmark smark;
76 struct stat statb;
77
78 if (silent)
79 nmboxes = 10;
80 if (nmboxes == 0)
81 return;
82 setstackmark(&smark);
83 mpath = mpathset()? mpathval() : mailval();
84 for (i = 0 ; i < nmboxes ; i++) {
85 p = padvance(&mpath, nullstr);
86 if (p == NULL)
87 break;
88 if (*p == '\0')
89 continue;
90 for (q = p ; *q ; q++);
91 if (q[-1] != '/')
92 abort();
93 q[-1] = '\0'; /* delete trailing '/' */
94 if (stat(p, &statb) < 0)
95 statb.st_mtime = 0;
96 if (!silent
97 && statb.st_size > 0
98 && statb.st_mtime > mailtime[i]
99 && statb.st_mtime > statb.st_atime
100 ) {
101 out2str(pathopt? pathopt : "You have mail");
102 out2c('\n');
103 }
104 mailtime[i] = statb.st_mtime;
105 }
106 nmboxes = i;
107 popstackmark(&smark);
108}
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