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d4697bc9 | 1 | /* Copyright (C) 1991-2014 Free Software Foundation, Inc. |
c84142e8 UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
c84142e8 UD |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
c84142e8 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
28f540f4 RM |
18 | #include <errno.h> |
19 | #include <limits.h> | |
20 | #include <printf.h> | |
8e96ae1a | 21 | #include <stddef.h> |
379c9e03 | 22 | #include <stdlib.h> |
9d26efa9 UD |
23 | #include <bits/libc-lock.h> |
24 | ||
28f540f4 RM |
25 | |
26 | /* Array of functions indexed by format character. */ | |
9d26efa9 | 27 | libc_freeres_ptr (printf_arginfo_size_function **__printf_arginfo_table) |
c877418f | 28 | attribute_hidden; |
6455d255 | 29 | printf_function **__printf_function_table attribute_hidden; |
28f540f4 | 30 | |
9d26efa9 UD |
31 | __libc_lock_define_initialized (static, lock) |
32 | ||
33 | int __register_printf_specifier (int, printf_function, | |
34 | printf_arginfo_size_function); | |
79937577 | 35 | int __register_printf_function (int, printf_function, |
9d26efa9 UD |
36 | printf_arginfo_function); |
37 | ||
a68b0d31 | 38 | |
28f540f4 RM |
39 | /* Register FUNC to be called to format SPEC specifiers. */ |
40 | int | |
9d26efa9 | 41 | __register_printf_specifier (spec, converter, arginfo) |
23396375 UD |
42 | int spec; |
43 | printf_function converter; | |
9d26efa9 | 44 | printf_arginfo_size_function arginfo; |
28f540f4 RM |
45 | { |
46 | if (spec < 0 || spec > (int) UCHAR_MAX) | |
47 | { | |
c4029823 | 48 | __set_errno (EINVAL); |
28f540f4 RM |
49 | return -1; |
50 | } | |
51 | ||
9d26efa9 UD |
52 | int result = 0; |
53 | __libc_lock_lock (lock); | |
54 | ||
c877418f RM |
55 | if (__printf_function_table == NULL) |
56 | { | |
9d26efa9 | 57 | __printf_arginfo_table = (printf_arginfo_size_function **) |
d0f534e9 | 58 | calloc (UCHAR_MAX + 1, sizeof (void *) * 2); |
c877418f | 59 | if (__printf_arginfo_table == NULL) |
9d26efa9 UD |
60 | { |
61 | result = -1; | |
62 | goto out; | |
63 | } | |
64 | ||
c877418f RM |
65 | __printf_function_table = (printf_function **) |
66 | (__printf_arginfo_table + UCHAR_MAX + 1); | |
67 | } | |
68 | ||
69 | __printf_function_table[spec] = converter; | |
28f540f4 | 70 | __printf_arginfo_table[spec] = arginfo; |
28f540f4 | 71 | |
9d26efa9 UD |
72 | out: |
73 | __libc_lock_unlock (lock); | |
74 | ||
75 | return result; | |
76 | } | |
77 | weak_alias (__register_printf_specifier, register_printf_specifier) | |
78 | ||
79 | ||
80 | /* Register FUNC to be called to format SPEC specifiers. */ | |
81 | int | |
82 | __register_printf_function (spec, converter, arginfo) | |
83 | int spec; | |
84 | printf_function converter; | |
85 | printf_arginfo_function arginfo; | |
86 | { | |
87 | return __register_printf_specifier (spec, converter, | |
88 | (printf_arginfo_size_function*) arginfo); | |
28f540f4 | 89 | } |
23396375 | 90 | weak_alias (__register_printf_function, register_printf_function) |