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Commit | Line | Data |
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dff8da6b | 1 | /* Copyright (C) 1991-2024 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 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://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> |
ec999b8e | 23 | #include <libc-lock.h> |
88677348 | 24 | #include <set-freeres.h> |
9d26efa9 | 25 | |
28f540f4 RM |
26 | |
27 | /* Array of functions indexed by format character. */ | |
88677348 | 28 | printf_arginfo_size_function **__printf_arginfo_table attribute_hidden; |
6455d255 | 29 | printf_function **__printf_function_table attribute_hidden; |
28f540f4 | 30 | |
9d26efa9 UD |
31 | __libc_lock_define_initialized (static, lock) |
32 | ||
28f540f4 RM |
33 | /* Register FUNC to be called to format SPEC specifiers. */ |
34 | int | |
f63f2bfd JM |
35 | __register_printf_specifier (int spec, printf_function converter, |
36 | printf_arginfo_size_function arginfo) | |
28f540f4 RM |
37 | { |
38 | if (spec < 0 || spec > (int) UCHAR_MAX) | |
39 | { | |
c4029823 | 40 | __set_errno (EINVAL); |
28f540f4 RM |
41 | return -1; |
42 | } | |
43 | ||
9d26efa9 UD |
44 | int result = 0; |
45 | __libc_lock_lock (lock); | |
46 | ||
c877418f RM |
47 | if (__printf_function_table == NULL) |
48 | { | |
9d26efa9 | 49 | __printf_arginfo_table = (printf_arginfo_size_function **) |
d0f534e9 | 50 | calloc (UCHAR_MAX + 1, sizeof (void *) * 2); |
c877418f | 51 | if (__printf_arginfo_table == NULL) |
9d26efa9 UD |
52 | { |
53 | result = -1; | |
54 | goto out; | |
55 | } | |
56 | ||
c877418f RM |
57 | __printf_function_table = (printf_function **) |
58 | (__printf_arginfo_table + UCHAR_MAX + 1); | |
59 | } | |
60 | ||
61 | __printf_function_table[spec] = converter; | |
28f540f4 | 62 | __printf_arginfo_table[spec] = arginfo; |
28f540f4 | 63 | |
9d26efa9 UD |
64 | out: |
65 | __libc_lock_unlock (lock); | |
66 | ||
67 | return result; | |
68 | } | |
20962acb | 69 | libc_hidden_def (__register_printf_specifier) |
9d26efa9 UD |
70 | weak_alias (__register_printf_specifier, register_printf_specifier) |
71 | ||
72 | ||
73 | /* Register FUNC to be called to format SPEC specifiers. */ | |
74 | int | |
f63f2bfd JM |
75 | __register_printf_function (int spec, printf_function converter, |
76 | printf_arginfo_function arginfo) | |
9d26efa9 UD |
77 | { |
78 | return __register_printf_specifier (spec, converter, | |
79 | (printf_arginfo_size_function*) arginfo); | |
28f540f4 | 80 | } |
23396375 | 81 | weak_alias (__register_printf_function, register_printf_function) |
88677348 AZN |
82 | |
83 | weak_alias (__printf_arginfo_table, __libc_reg_printf_freemem_ptr) |