1 /* $OpenBSD: misc.c,v 1.2 2001/02/22 21:59:44 markus Exp $ */
4 * Copyright (c) 2000 Markus Friedl. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 RCSID("$OpenBSD: misc.c,v 1.2 2001/02/22 21:59:44 markus Exp $");
38 if(*t == '\n' || *t == '\r') {
52 val = fcntl(fd, F_GETFL, 0);
54 error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
57 if (val & O_NONBLOCK) {
58 debug("fd %d IS O_NONBLOCK", fd);
61 debug("fd %d setting O_NONBLOCK", fd);
63 if (fcntl(fd, F_SETFL, val) == -1)
65 error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
69 /* Characters considered whitespace in strsep calls. */
70 #define WHITESPACE " \t\r\n"
83 *s = strpbrk(*s, WHITESPACE "=");
87 /* Allow only one '=' to be skipped */
92 *s += strspn(*s + 1, WHITESPACE) + 1;
93 if (*s[0] == '=' && !wspace)
94 *s += strspn(*s + 1, WHITESPACE) + 1;
100 pwcopy(struct passwd *pw)
102 struct passwd *copy = xmalloc(sizeof(*copy));
103 memset(copy, 0, sizeof(*copy));
104 copy->pw_name = xstrdup(pw->pw_name);
105 copy->pw_passwd = xstrdup(pw->pw_passwd);
106 copy->pw_uid = pw->pw_uid;
107 copy->pw_gid = pw->pw_gid;
108 copy->pw_class = xstrdup(pw->pw_class);
109 copy->pw_dir = xstrdup(pw->pw_dir);
110 copy->pw_shell = xstrdup(pw->pw_shell);
115 mysignal(int sig, mysig_t act)
117 #ifdef HAVE_SIGACTION
118 struct sigaction sa, osa;
120 if (sigaction(sig, NULL, &osa) == -1)
122 if (osa.sa_handler != act) {
123 memset(&sa, 0, sizeof(sa));
124 sigemptyset(&sa.sa_mask);
126 #if defined(SA_RESTART)
128 sa.sa_flags |= SA_RESTART;
130 #if defined(SA_INTERRUPT)
132 sa.sa_flags |= SA_INTERRUPT;
135 if (sigaction(sig, &sa, NULL) == -1)
138 return (osa.sa_handler);
140 return (signal(sig, act));