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Annotation of src/usr.bin/dc/mem.c, Revision 1.2

1.2     ! otto        1: /*     $OpenBSD: mem.c,v 1.1 2003/09/19 17:58:25 otto Exp $    */
1.1       otto        2:
                      3: /*
                      4:  * Copyright (c) 2003, Otto Moerbeek <otto@drijf.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 USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #ifndef lint
1.2     ! otto       20: static const char rcsid[] = "$OpenBSD: mem.c,v 1.1 2003/09/19 17:58:25 otto Exp $";
1.1       otto       21: #endif /* not lint */
                     22:
                     23: #include <ssl/err.h>
                     24:
                     25: #include <err.h>
                     26: #include <stdlib.h>
                     27: #include <string.h>
                     28:
                     29: #include "extern.h"
                     30:
                     31: struct number *
                     32: new_number(void)
                     33: {
                     34:        struct number *n;
                     35:
                     36:        n = bmalloc(sizeof(*n));
                     37:        n->scale = 0;
                     38:        n->number = BN_new();
                     39:        if (n->number == NULL)
                     40:                err(1, "cannot allocate number");
                     41:        return n;
                     42: }
                     43:
                     44: void
                     45: free_number(struct number *n)
                     46: {
                     47:        BN_free(n->number);
                     48:        free(n);
                     49: }
                     50:
                     51: struct number *
                     52: dup_number(const struct number *a)
                     53: {
                     54:        struct number *n;
                     55:
                     56:        n = bmalloc(sizeof(*n));
                     57:        n->scale = a->scale;
                     58:        n->number = BN_dup(a->number);
                     59:        bn_checkp(n->number);
                     60:        return n;
                     61: }
                     62:
                     63: void *
                     64: bmalloc(size_t sz)
                     65: {
                     66:        void *p;
                     67:
                     68:        p = malloc(sz);
                     69:        if (p == NULL)
                     70:                err(1, "malloc failed");
                     71:        return p;
                     72: }
                     73:
                     74: void *
                     75: brealloc(void *p, size_t sz)
                     76: {
                     77:        void *q;
                     78:
                     79:        q = realloc(p, sz);
1.2     ! otto       80:        if (q == NULL) {
        !            81:                free(p);
1.1       otto       82:                err(1, "realloc failed");
1.2     ! otto       83:        }
1.1       otto       84:        return q;
                     85: }
                     86:
                     87: char *
                     88: bstrdup(const char *p)
                     89: {
                     90:        char *q;
                     91:
                     92:        q = strdup(p);
                     93:        if (q == NULL)
                     94:                err(1, "stdup failed");
                     95:        return q;
                     96: }
                     97:
                     98: void
                     99: bn_check(int x)                                                \
                    100: {
                    101:        if (x == 0)
                    102:                err(1, "big number failure %lx", ERR_get_error());
                    103: }
                    104:
                    105: void
                    106: bn_checkp(const void *p)                                               \
                    107: {
                    108:        if (p == NULL)
                    109:                err(1, "allocation failure %lx", ERR_get_error());
                    110: }