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Annotation of src/usr.bin/tmux/xmalloc.c, Revision 1.7

1.7     ! nicm        1: /* $OpenBSD: xmalloc.c,v 1.6 2014/10/20 23:27:14 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:
1.6       nicm       19: #include <sys/types.h>
1.1       nicm       20:
                     21: #include <stdint.h>
                     22: #include <stdlib.h>
                     23: #include <string.h>
                     24:
                     25: #include "tmux.h"
                     26:
                     27: char *
                     28: xstrdup(const char *s)
                     29: {
1.2       nicm       30:        char    *ptr;
1.1       nicm       31:        size_t   len;
                     32:
                     33:        len = strlen(s) + 1;
                     34:        ptr = xmalloc(len);
                     35:
1.2       nicm       36:        strlcpy(ptr, s, len);
                     37:        return (ptr);
1.1       nicm       38: }
                     39:
                     40: void *
                     41: xcalloc(size_t nmemb, size_t size)
                     42: {
1.3       deraadt    43:        void    *ptr;
1.1       nicm       44:
1.3       deraadt    45:        if (size == 0 || nmemb == 0)
1.1       nicm       46:                fatalx("zero size");
1.3       deraadt    47:        if (SIZE_MAX / nmemb < size)
                     48:                fatalx("nmemb * size > SIZE_MAX");
                     49:        if ((ptr = calloc(nmemb, size)) == NULL)
1.1       nicm       50:                fatal("xcalloc failed");
                     51:
1.3       deraadt    52:        return (ptr);
1.1       nicm       53: }
                     54:
                     55: void *
                     56: xmalloc(size_t size)
                     57: {
                     58:        void    *ptr;
                     59:
1.3       deraadt    60:        if (size == 0)
                     61:                fatalx("zero size");
                     62:        if ((ptr = malloc(size)) == NULL)
1.1       nicm       63:                fatal("xmalloc failed");
                     64:
1.3       deraadt    65:        return (ptr);
1.1       nicm       66: }
                     67:
                     68: void *
1.5       nicm       69: xrealloc(void *oldptr, size_t newsize)
                     70: {
                     71:        void    *newptr;
                     72:
                     73:        if (newsize == 0)
                     74:                fatalx("zero size");
                     75:        if ((newptr = realloc(oldptr, newsize)) == NULL)
                     76:                fatal("xrealloc failed");
                     77:
                     78:        return (newptr);
                     79: }
                     80:
                     81: void *
                     82: xreallocarray(void *oldptr, size_t nmemb, size_t size)
1.1       nicm       83: {
                     84:        size_t   newsize = nmemb * size;
                     85:        void    *newptr;
                     86:
                     87:        if (newsize == 0)
1.3       deraadt    88:                fatalx("zero size");
                     89:        if (SIZE_MAX / nmemb < size)
                     90:                fatalx("nmemb * size > SIZE_MAX");
                     91:        if ((newptr = realloc(oldptr, newsize)) == NULL)
1.5       nicm       92:                fatal("xreallocarray failed");
1.1       nicm       93:
1.3       deraadt    94:        return (newptr);
1.1       nicm       95: }
                     96:
1.7     ! nicm       97: int
1.1       nicm       98: xasprintf(char **ret, const char *fmt, ...)
                     99: {
1.3       deraadt   100:        va_list ap;
                    101:        int     i;
1.1       nicm      102:
1.3       deraadt   103:        va_start(ap, fmt);
                    104:        i = xvasprintf(ret, fmt, ap);
                    105:        va_end(ap);
1.1       nicm      106:
                    107:        return (i);
                    108: }
                    109:
                    110: int
                    111: xvasprintf(char **ret, const char *fmt, va_list ap)
                    112: {
                    113:        int     i;
                    114:
                    115:        i = vasprintf(ret, fmt, ap);
1.3       deraadt   116:        if (i < 0 || *ret == NULL)
                    117:                fatal("xvasprintf failed");
1.1       nicm      118:
1.3       deraadt   119:        return (i);
1.1       nicm      120: }
                    121:
1.7     ! nicm      122: int
1.1       nicm      123: xsnprintf(char *buf, size_t len, const char *fmt, ...)
                    124: {
1.3       deraadt   125:        va_list ap;
                    126:        int     i;
1.1       nicm      127:
1.3       deraadt   128:        va_start(ap, fmt);
                    129:        i = xvsnprintf(buf, len, fmt, ap);
                    130:        va_end(ap);
1.1       nicm      131:
                    132:        return (i);
                    133: }
                    134:
                    135: int
                    136: xvsnprintf(char *buf, size_t len, const char *fmt, va_list ap)
                    137: {
                    138:        int     i;
                    139:
                    140:        if (len > INT_MAX)
                    141:                fatalx("len > INT_MAX");
                    142:
                    143:        i = vsnprintf(buf, len, fmt, ap);
1.3       deraadt   144:        if (i < 0)
                    145:                fatal("vsnprintf failed");
1.1       nicm      146:
1.3       deraadt   147:        return (i);
1.1       nicm      148: }