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2aa62f2b | 1 | /* $NetBSD: vasprintf.c,v 1.10 2005/02/09 21:35:47 kleink Exp $ */\r |
2 | \r | |
3 | /*\r | |
4 | * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>\r | |
5 | * All rights reserved.\r | |
6 | *\r | |
7 | * Redistribution and use in source and binary forms, with or without\r | |
8 | * modification, are permitted provided that the following conditions\r | |
9 | * are met:\r | |
10 | * 1. Redistributions of source code must retain the above copyright\r | |
11 | * notice, this list of conditions and the following disclaimer.\r | |
12 | * 2. Redistributions in binary form must reproduce the above copyright\r | |
13 | * notice, this list of conditions and the following disclaimer in the\r | |
14 | * documentation and/or other materials provided with the distribution.\r | |
15 | * 3. The name of the author may not be used to endorse or promote products\r | |
16 | * derived from this software without specific prior written permission.\r | |
17 | *\r | |
18 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,\r | |
19 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY\r | |
20 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL\r | |
21 | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,\r | |
22 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,\r | |
23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;\r | |
24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\r | |
25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR\r | |
26 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF\r | |
27 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r | |
28 | */\r | |
29 | #include <LibConfig.h>\r | |
30 | #include <sys/EfiCdefs.h>\r | |
31 | #if defined(LIBC_SCCS) && !defined(lint)\r | |
32 | __RCSID("$NetBSD: vasprintf.c,v 1.10 2005/02/09 21:35:47 kleink Exp $");\r | |
33 | #endif /* LIBC_SCCS and not lint */\r | |
34 | \r | |
35 | #include <assert.h>\r | |
36 | #include <errno.h>\r | |
37 | #include <stdio.h>\r | |
38 | #include <stdlib.h>\r | |
39 | #include "reentrant.h"\r | |
40 | #include "local.h"\r | |
41 | \r | |
42 | int\r | |
43 | vasprintf(str, fmt, ap)\r | |
44 | char **str;\r | |
45 | const char *fmt;\r | |
46 | _BSD_VA_LIST_ ap;\r | |
47 | {\r | |
48 | int ret;\r | |
49 | FILE f;\r | |
50 | struct __sfileext fext;\r | |
51 | unsigned char *_base;\r | |
52 | \r | |
53 | _DIAGASSERT(str != NULL);\r | |
54 | _DIAGASSERT(fmt != NULL);\r | |
55 | \r | |
56 | _FILEEXT_SETUP(&f, &fext);\r | |
57 | f._file = -1;\r | |
58 | f._flags = __SWR | __SSTR | __SALC;\r | |
59 | f._bf._base = f._p = (unsigned char *)malloc(128);\r | |
60 | if (f._bf._base == NULL)\r | |
61 | goto err;\r | |
62 | f._bf._size = f._w = 127; /* Leave room for the NUL */\r | |
63 | ret = __vfprintf_unlocked(&f, fmt, ap);\r | |
64 | if (ret == -1)\r | |
65 | goto err;\r | |
66 | *f._p = '\0';\r | |
67 | _base = realloc(f._bf._base, (size_t)(ret + 1));\r | |
68 | if (_base == NULL)\r | |
69 | goto err;\r | |
70 | *str = (char *)_base;\r | |
71 | return (ret);\r | |
72 | \r | |
73 | err:\r | |
74 | if (f._bf._base)\r | |
75 | free(f._bf._base);\r | |
76 | *str = NULL;\r | |
77 | errno = ENOMEM;\r | |
78 | return (-1);\r | |
79 | }\r |