Annotation of src/usr.bin/tmux/xmalloc.c, Revision 1.2
1.2 ! nicm 1: /* $OpenBSD: xmalloc.c,v 1.1 2009/06/01 22:58:49 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2004 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/param.h>
20:
21: #include <errno.h>
22: #include <libgen.h>
23: #include <stdint.h>
24: #include <stdlib.h>
25: #include <string.h>
26:
27: #include "tmux.h"
28:
29: char *
30: xstrdup(const char *s)
31: {
1.2 ! nicm 32: char *ptr;
1.1 nicm 33: size_t len;
34:
35: len = strlen(s) + 1;
36: ptr = xmalloc(len);
37:
1.2 ! nicm 38: strlcpy(ptr, s, len);
! 39: return (ptr);
1.1 nicm 40: }
41:
42: void *
43: xcalloc(size_t nmemb, size_t size)
44: {
45: void *ptr;
46:
47: if (size == 0 || nmemb == 0)
48: fatalx("zero size");
49: if (SIZE_MAX / nmemb < size)
50: fatalx("nmemb * size > SIZE_MAX");
51: if ((ptr = calloc(nmemb, size)) == NULL)
52: fatal("xcalloc failed");
53:
54: return (ptr);
55: }
56:
57: void *
58: xmalloc(size_t size)
59: {
60: void *ptr;
61:
62: if (size == 0)
63: fatalx("zero size");
64: if ((ptr = malloc(size)) == NULL)
65: fatal("xmalloc failed");
66:
67: return (ptr);
68: }
69:
70: void *
71: xrealloc(void *oldptr, size_t nmemb, size_t size)
72: {
73: size_t newsize = nmemb * size;
74: void *newptr;
75:
76: if (newsize == 0)
77: fatalx("zero size");
78: if (SIZE_MAX / nmemb < size)
79: fatalx("nmemb * size > SIZE_MAX");
80: if ((newptr = realloc(oldptr, newsize)) == NULL)
81: fatal("xrealloc failed");
82:
83: return (newptr);
84: }
85:
86: void
87: xfree(void *ptr)
88: {
89: if (ptr == NULL)
90: fatalx("null pointer");
91: free(ptr);
92: }
93:
94: int printflike2
95: xasprintf(char **ret, const char *fmt, ...)
96: {
97: va_list ap;
98: int i;
99:
100: va_start(ap, fmt);
101: i = xvasprintf(ret, fmt, ap);
102: va_end(ap);
103:
104: return (i);
105: }
106:
107: int
108: xvasprintf(char **ret, const char *fmt, va_list ap)
109: {
110: int i;
111:
112: i = vasprintf(ret, fmt, ap);
113: if (i < 0 || *ret == NULL)
114: fatal("xvasprintf failed");
115:
116: return (i);
117: }
118:
119: int printflike3
120: xsnprintf(char *buf, size_t len, const char *fmt, ...)
121: {
122: va_list ap;
123: int i;
124:
125: va_start(ap, fmt);
126: i = xvsnprintf(buf, len, fmt, ap);
127: va_end(ap);
128:
129: return (i);
130: }
131:
132: int
133: xvsnprintf(char *buf, size_t len, const char *fmt, va_list ap)
134: {
135: int i;
136:
137: if (len > INT_MAX)
138: fatalx("len > INT_MAX");
139:
140: i = vsnprintf(buf, len, fmt, ap);
141: if (i < 0)
142: fatal("vsnprintf failed");
143:
144: return (i);
145: }