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1# sys_stat_h.m4 serial 42 -*- Autoconf -*-
2dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7dnl From Eric Blake.
8dnl Provide a GNU-like <sys/stat.h>.
9
10AC_DEFUN_ONCE([gl_SYS_STAT_H],
11[
12 AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
13
14 dnl Check for broken stat macros.
15 AC_REQUIRE([AC_HEADER_STAT])
16
17 gl_CHECK_NEXT_HEADERS([sys/stat.h])
18
19 dnl Ensure the type mode_t gets defined.
20 AC_REQUIRE([AC_TYPE_MODE_T])
21
22 dnl Whether to enable precise timestamps in 'struct stat'.
23 m4_ifdef([gl_WINDOWS_STAT_TIMESPEC], [
24 AC_REQUIRE([gl_WINDOWS_STAT_TIMESPEC])
25 ], [
26 WINDOWS_STAT_TIMESPEC=0
27 ])
28 AC_SUBST([WINDOWS_STAT_TIMESPEC])
29
30 dnl Whether to ensure that struct stat.st_size is 64-bit wide.
31 m4_ifdef([gl_LARGEFILE], [
32 AC_REQUIRE([gl_LARGEFILE])
33 ], [
34 WINDOWS_64_BIT_ST_SIZE=0
35 ])
36 AC_SUBST([WINDOWS_64_BIT_ST_SIZE])
37
38 dnl Define types that are supposed to be defined in <sys/types.h> or
39 dnl <sys/stat.h>.
40 AC_CHECK_TYPE([nlink_t], [],
41 [AC_DEFINE([nlink_t], [int],
42 [Define to the type of st_nlink in struct stat, or a supertype.])],
43 [#include <sys/types.h>
44 #include <sys/stat.h>])
45
46 dnl Check for declarations of anything we want to poison if the
47 dnl corresponding gnulib module is not in use.
48 gl_WARN_ON_USE_PREPARE([[#include <sys/stat.h>
49 ]], [chmod fchmodat fstat fstatat futimens getumask lchmod lstat
50 mkdirat mkfifo mkfifoat mknod mknodat stat utimensat])
51
52 AC_REQUIRE([AC_C_RESTRICT])
53])
54
55# gl_SYS_STAT_MODULE_INDICATOR([modulename])
56# sets the shell variable that indicates the presence of the given module
57# to a C preprocessor expression that will evaluate to 1.
58# This macro invocation must not occur in macros that are AC_REQUIREd.
59AC_DEFUN([gl_SYS_STAT_MODULE_INDICATOR],
60[
61 dnl Ensure to expand the default settings once only.
62 gl_SYS_STAT_H_REQUIRE_DEFAULTS
63 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
64 dnl Define it also as a C macro, for the benefit of the unit tests.
65 gl_MODULE_INDICATOR_FOR_TESTS([$1])
66])
67
68# Initializes the default values for AC_SUBSTed shell variables.
69# This macro must not be AC_REQUIREd. It must only be invoked, and only
70# outside of macros or in macros that are not AC_REQUIREd.
71AC_DEFUN([gl_SYS_STAT_H_REQUIRE_DEFAULTS],
72[
73 m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_STAT_H_MODULE_INDICATOR_DEFAULTS], [
74 gl_UNISTD_H_REQUIRE_DEFAULTS dnl for REPLACE_FCHDIR
75 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHMOD])
76 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHMODAT])
77 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSTAT])
78 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSTATAT])
79 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FUTIMENS])
80 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETUMASK])
81 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LCHMOD])
82 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LSTAT])
83 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDIR])
84 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDIRAT])
85 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKFIFO])
86 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKFIFOAT])
87 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKNOD])
88 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKNODAT])
89 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STAT])
90 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UTIMENSAT])
91 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OVERRIDES_STRUCT_STAT])
92 dnl Support Microsoft deprecated alias function names by default.
93 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CHMOD], [1])
94 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MKDIR], [1])
95 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_UMASK], [1])
96 ])
97 m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_STAT_H_MODULE_INDICATOR_DEFAULTS])
98 AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
99])
100
101AC_DEFUN([gl_SYS_STAT_H_DEFAULTS],
102[
103 dnl Assume proper GNU behavior unless another module says otherwise.
104 HAVE_FCHMODAT=1; AC_SUBST([HAVE_FCHMODAT])
105 HAVE_FSTATAT=1; AC_SUBST([HAVE_FSTATAT])
106 HAVE_FUTIMENS=1; AC_SUBST([HAVE_FUTIMENS])
107 HAVE_GETUMASK=1; AC_SUBST([HAVE_GETUMASK])
108 HAVE_LCHMOD=1; AC_SUBST([HAVE_LCHMOD])
109 HAVE_LSTAT=1; AC_SUBST([HAVE_LSTAT])
110 HAVE_MKDIRAT=1; AC_SUBST([HAVE_MKDIRAT])
111 HAVE_MKFIFO=1; AC_SUBST([HAVE_MKFIFO])
112 HAVE_MKFIFOAT=1; AC_SUBST([HAVE_MKFIFOAT])
113 HAVE_MKNOD=1; AC_SUBST([HAVE_MKNOD])
114 HAVE_MKNODAT=1; AC_SUBST([HAVE_MKNODAT])
115 HAVE_UTIMENSAT=1; AC_SUBST([HAVE_UTIMENSAT])
116 REPLACE_CHMOD=0; AC_SUBST([REPLACE_CHMOD])
117 REPLACE_FCHMODAT=0; AC_SUBST([REPLACE_FCHMODAT])
118 REPLACE_FSTAT=0; AC_SUBST([REPLACE_FSTAT])
119 REPLACE_FSTATAT=0; AC_SUBST([REPLACE_FSTATAT])
120 REPLACE_FUTIMENS=0; AC_SUBST([REPLACE_FUTIMENS])
121 REPLACE_LSTAT=0; AC_SUBST([REPLACE_LSTAT])
122 REPLACE_MKDIR=0; AC_SUBST([REPLACE_MKDIR])
123 REPLACE_MKFIFO=0; AC_SUBST([REPLACE_MKFIFO])
124 REPLACE_MKFIFOAT=0; AC_SUBST([REPLACE_MKFIFOAT])
125 REPLACE_MKNOD=0; AC_SUBST([REPLACE_MKNOD])
126 REPLACE_MKNODAT=0; AC_SUBST([REPLACE_MKNODAT])
127 REPLACE_STAT=0; AC_SUBST([REPLACE_STAT])
128 REPLACE_UTIMENSAT=0; AC_SUBST([REPLACE_UTIMENSAT])
129])