1 | /* Definitions of macros to access `dev_t' values. |
2 | Copyright (C) 1996-2018 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ |
18 | |
19 | #ifndef _SYS_SYSMACROS_H_OUTER |
20 | |
21 | #ifndef __SYSMACROS_DEPRECATED_INCLUSION |
22 | # define _SYS_SYSMACROS_H_OUTER 1 |
23 | #endif |
24 | |
25 | /* If <sys/sysmacros.h> is included after <sys/types.h>, these macros |
26 | will already be defined, and we need to redefine them without the |
27 | deprecation warnings. (If they are included in the opposite order, |
28 | the outer #ifndef will suppress this entire file and the macros |
29 | will be usable without warnings.) */ |
30 | #undef major |
31 | #undef minor |
32 | #undef makedev |
33 | |
34 | /* This is the macro that must be defined to satisfy the misuse check |
35 | in bits/sysmacros.h. */ |
36 | #ifndef _SYS_SYSMACROS_H |
37 | #define _SYS_SYSMACROS_H 1 |
38 | |
39 | #include <features.h> |
40 | #include <bits/types.h> |
41 | #include <bits/sysmacros.h> |
42 | |
43 | /* Caution: The text of this deprecation message is unquoted, so that |
44 | #symbol can be substituted. (It is converted to a string by |
45 | __SYSMACROS_DM1.) This means the message must be a sequence of |
46 | complete pp-tokens; in particular, English contractions (it's, |
47 | can't) cannot be used. |
48 | |
49 | The message has been manually word-wrapped to fit in 80 columns |
50 | when output by GCC 5 and 6. The first line is shorter to leave |
51 | some room for the "foo.c:23: warning:" annotation. */ |
52 | #define __SYSMACROS_DM(symbol) __SYSMACROS_DM1 \ |
53 | (In the GNU C Library, #symbol is defined\n\ |
54 | by <sys/sysmacros.h>. For historical compatibility, it is\n\ |
55 | currently defined by <sys/types.h> as well, but we plan to\n\ |
56 | remove this soon. To use #symbol, include <sys/sysmacros.h>\n\ |
57 | directly. If you did not intend to use a system-defined macro\n\ |
58 | #symbol, you should undefine it after including <sys/types.h>.) |
59 | |
60 | /* This macro is variadic because the deprecation message above |
61 | contains commas. */ |
62 | #define __SYSMACROS_DM1(...) __glibc_macro_warning (#__VA_ARGS__) |
63 | |
64 | #define __SYSMACROS_DECL_TEMPL(rtype, name, proto) \ |
65 | extern rtype gnu_dev_##name proto __THROW __attribute_const__; |
66 | |
67 | #define __SYSMACROS_IMPL_TEMPL(rtype, name, proto) \ |
68 | __extension__ __extern_inline __attribute_const__ rtype \ |
69 | __NTH (gnu_dev_##name proto) |
70 | |
71 | __BEGIN_DECLS |
72 | |
73 | __SYSMACROS_DECLARE_MAJOR (__SYSMACROS_DECL_TEMPL) |
74 | __SYSMACROS_DECLARE_MINOR (__SYSMACROS_DECL_TEMPL) |
75 | __SYSMACROS_DECLARE_MAKEDEV (__SYSMACROS_DECL_TEMPL) |
76 | |
77 | #ifdef __USE_EXTERN_INLINES |
78 | |
79 | __SYSMACROS_DEFINE_MAJOR (__SYSMACROS_IMPL_TEMPL) |
80 | __SYSMACROS_DEFINE_MINOR (__SYSMACROS_IMPL_TEMPL) |
81 | __SYSMACROS_DEFINE_MAKEDEV (__SYSMACROS_IMPL_TEMPL) |
82 | |
83 | #endif |
84 | |
85 | __END_DECLS |
86 | |
87 | #endif /* _SYS_SYSMACROS_H */ |
88 | |
89 | #ifndef __SYSMACROS_NEED_IMPLEMENTATION |
90 | # undef __SYSMACROS_DECL_TEMPL |
91 | # undef __SYSMACROS_IMPL_TEMPL |
92 | # undef __SYSMACROS_DECLARE_MAJOR |
93 | # undef __SYSMACROS_DECLARE_MINOR |
94 | # undef __SYSMACROS_DECLARE_MAKEDEV |
95 | # undef __SYSMACROS_DEFINE_MAJOR |
96 | # undef __SYSMACROS_DEFINE_MINOR |
97 | # undef __SYSMACROS_DEFINE_MAKEDEV |
98 | #endif |
99 | |
100 | #ifdef __SYSMACROS_DEPRECATED_INCLUSION |
101 | # define major(dev) __SYSMACROS_DM (major) gnu_dev_major (dev) |
102 | # define minor(dev) __SYSMACROS_DM (minor) gnu_dev_minor (dev) |
103 | # define makedev(maj, min) __SYSMACROS_DM (makedev) gnu_dev_makedev (maj, min) |
104 | #else |
105 | # define major(dev) gnu_dev_major (dev) |
106 | # define minor(dev) gnu_dev_minor (dev) |
107 | # define makedev(maj, min) gnu_dev_makedev (maj, min) |
108 | #endif |
109 | |
110 | #endif /* sys/sysmacros.h */ |
111 | |