Annotation of src/usr.bin/rsync/misc.c, Revision 1.2
1.2 ! claudio 1: /* $OpenBSD: misc.c,v 1.1 2019/04/02 05:32:08 deraadt Exp $ */
1.1 deraadt 2: /*
3: * Copyright (c) 2000 Markus Friedl. All rights reserved.
4: * Copyright (c) 2005,2006 Damien Miller. All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: *
15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: #include <stdlib.h>
28: #include <unistd.h>
29: #include <stdio.h>
30: #include <stdarg.h>
31: #include <err.h>
32:
33: #include "extern.h"
34:
35: /* function to assist building execv() arguments */
36: void
1.2 ! claudio 37: addargs(arglist *args, const char *fmt, ...)
1.1 deraadt 38: {
1.2 ! claudio 39: va_list ap;
! 40: char *cp;
! 41: u_int nalloc;
! 42: int r;
1.1 deraadt 43:
44: va_start(ap, fmt);
45: r = vasprintf(&cp, fmt, ap);
46: va_end(ap);
47: if (r == -1)
48: err(1, "addargs: argument too long");
49:
50: nalloc = args->nalloc;
51: if (args->list == NULL) {
52: nalloc = 32;
53: args->num = 0;
54: } else if (args->num+2 >= nalloc)
55: nalloc *= 2;
56:
57: args->list = recallocarray(args->list, args->nalloc, nalloc, sizeof(char *));
58: if (!args->list)
59: err(1, "malloc");
60: args->nalloc = nalloc;
61: args->list[args->num++] = cp;
62: args->list[args->num] = NULL;
63: }
64:
65: void
66: freeargs(arglist *args)
67: {
68: u_int i;
69:
70: if (args->list != NULL) {
71: for (i = 0; i < args->num; i++)
72: free(args->list[i]);
73: free(args->list);
74: args->nalloc = args->num = 0;
75: args->list = NULL;
76: }
77: }