1 /*
2 * Copyright (c) 2004
3 * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <limits.h>
30 #include <signal.h>
31 #include <sys/types.h>
32
33 #ifndef SSIZE_MAX
34 #define SSIZE_MAX ((ssize_t)((size_t)-1 >> 1))
35 #endif
36
sigclearmask(void)37 static inline void sigclearmask(void)
38 {
39 #if defined(HAVE_SIGSETMASK) && \
40 (!defined(__GLIBC__) || \
41 (defined(__GNUC__) && (__GNUC__ * 1000 + __GNUC_MINOR__) >= 4006))
42 #ifdef __GLIBC__
43 #pragma GCC diagnostic push
44 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
45 #endif
46 sigsetmask(0);
47 #ifdef __GLIBC__
48 #pragma GCC diagnostic pop
49 #endif
50 #else
51 sigset_t set;
52 sigemptyset(&set);
53 sigprocmask(SIG_SETMASK, &set, 0);
54 #endif
55 }
56
57 #ifndef HAVE_MEMPCPY
58 void *mempcpy(void *, const void *, size_t);
59 #endif
60
61 #ifndef HAVE_STPCPY
62 char *stpcpy(char *, const char *);
63 #endif
64
65 #ifndef HAVE_STRCHRNUL
66 char *strchrnul(const char *, int);
67 #endif
68
69 #ifndef HAVE_STRSIGNAL
70 char *strsignal(int);
71 #endif
72
73 #ifndef HAVE_STRTOD
strtod(const char * nptr,char ** endptr)74 static inline double strtod(const char *nptr, char **endptr)
75 {
76 *endptr = (char *)nptr;
77 return 0;
78 }
79 #endif
80
81 #ifndef HAVE_STRTOIMAX
82 #define strtoimax strtoll
83 #endif
84
85 #ifndef HAVE_STRTOUMAX
86 #define strtoumax strtoull
87 #endif
88
89 #ifndef HAVE_BSEARCH
90 void *bsearch(const void *, const void *, size_t, size_t,
91 int (*)(const void *, const void *));
92 #endif
93
94 #ifndef HAVE_KILLPG
killpg(pid_t pid,int signal)95 static inline int killpg(pid_t pid, int signal)
96 {
97 #ifdef DEBUG
98 if (pid < 0)
99 abort();
100 #endif
101 return kill(-pid, signal);
102 }
103 #endif
104
105 #ifndef HAVE_SYSCONF
106 #define _SC_CLK_TCK 2
107 long sysconf(int) __attribute__((__noreturn__));
108 #endif
109
110 #if !HAVE_DECL_ISBLANK
111 int isblank(int c);
112 #endif
113
114 /*
115 * A trick to suppress uninitialized variable warning without generating any
116 * code
117 */
118 #define uninitialized_var(x) x = x
119