Annotation of src/usr.bin/make/error.c, Revision 1.5
1.5 ! espie 1: /* $OpenPackages$ */
! 2: /* $OpenBSD$ */
1.1 espie 3:
4: /*
5: * Copyright (c) 1988, 1989, 1990, 1993
6: * The Regents of the University of California. All rights reserved.
7: * Copyright (c) 1989 by Berkeley Softworks
8: * All rights reserved.
9: *
10: * This code is derived from software contributed to Berkeley by
11: * Adam de Boor.
12: *
13: * Redistribution and use in source and binary forms, with or without
14: * modification, are permitted provided that the following conditions
15: * are met:
16: * 1. Redistributions of source code must retain the above copyright
17: * notice, this list of conditions and the following disclaimer.
18: * 2. Redistributions in binary form must reproduce the above copyright
19: * notice, this list of conditions and the following disclaimer in the
20: * documentation and/or other materials provided with the distribution.
21: * 3. All advertising materials mentioning features or use of this software
22: * must display the following acknowledgement:
23: * This product includes software developed by the University of
24: * California, Berkeley and its contributors.
25: * 4. Neither the name of the University nor the names of its contributors
26: * may be used to endorse or promote products derived from this software
27: * without specific prior written permission.
28: *
29: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39: * SUCH DAMAGE.
40: */
41:
42: #include <sys/types.h>
43: #include <sys/stat.h>
44: #include <errno.h>
45: #include <stdio.h>
46: #include <stdlib.h>
47: #include <string.h>
48: #include <unistd.h>
49: #include "error.h"
50:
1.5 ! espie 51: #ifdef __GNUC__
! 52: #define UNUSED __attribute__((unused))
! 53: #else
! 54: #define UNUSED
! 55: #endif
! 56:
! 57: static void enomem(size_t);
1.1 espie 58:
59: /*
60: * emalloc --
61: * malloc, but die on error.
62: */
63: void *
64: emalloc(len)
65: size_t len;
66: {
67: void *p;
68:
69: if ((p = malloc(len)) == NULL)
70: enomem(len);
71: return p;
72: }
73:
74: /*
75: * estrdup --
76: * strdup, but die on error.
77: */
78: char *
79: estrdup(str)
80: const char *str;
81: {
82: char *p;
83: size_t size;
84:
85: size = strlen(str) + 1;
86:
87: p = emalloc(size);
88: memcpy(p, str, size);
89: return p;
90: }
91:
92: /*
93: * erealloc --
94: * realloc, but die on error.
95: */
96: void *
97: erealloc(ptr, size)
98: void *ptr;
99: size_t size;
100: {
101: if ((ptr = realloc(ptr, size)) == NULL)
102: enomem(size);
103: return ptr;
104: }
105:
106: void *
107: ecalloc(s1, s2)
108: size_t s1;
109: size_t s2;
110: {
111: void *p;
112:
113: if ((p = calloc(s1, s2)) == NULL)
114: enomem(s1 * s2);
115: return p;
116: }
117:
1.3 espie 118: /* Support routines for hash tables. */
119: void *
120: hash_alloc(s, u)
121: size_t s;
1.5 ! espie 122: void *u UNUSED;
1.3 espie 123: {
124: return ecalloc(s, 1);
125: }
126:
127: void
128: hash_free(p, s, u)
129: void *p;
1.5 ! espie 130: size_t s UNUSED;
! 131: void *u UNUSED;
1.3 espie 132: {
133: free(p);
134: }
135:
136: void *
137: element_alloc(s, u)
138: size_t s;
1.5 ! espie 139: void *u UNUSED;
1.3 espie 140: {
141: return emalloc(s);
142: }
1.5 ! espie 143:
! 144:
! 145:
1.1 espie 146: /*
147: * enomem --
148: * die when out of memory.
149: */
150: void
151: enomem(size)
152: size_t size;
153: {
1.4 espie 154: fprintf(stderr, "make: %s (%lu)\n", strerror(errno), (u_long)size);
155: exit(2);
156: }
157:
158: /*
159: * esetenv --
160: * change environment, die on error.
161: */
162: void
163: esetenv(name, value)
164: const char *name;
165: const char *value;
166: {
167: if (setenv(name, value, 1) == 0)
168: return;
1.1 espie 169:
1.4 espie 170: fprintf(stderr, "make: setenv failed (%s)\n", strerror(errno));
1.1 espie 171: exit(2);
172: }
173:
1.5 ! espie 174:
1.1 espie 175: /*
176: * enunlink --
177: * Remove a file carefully, avoiding directories.
178: */
179: int
180: eunlink(file)
181: const char *file;
182: {
183: struct stat st;
184:
185: if (lstat(file, &st) == -1)
186: return -1;
187:
188: if (S_ISDIR(st.st_mode)) {
189: errno = EISDIR;
190: return -1;
191: }
192: return unlink(file);
193: }
1.5 ! espie 194:
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