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| author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-05-16 09:22:21 +0000 |
|---|---|---|
| committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-05-16 09:22:21 +0000 |
| commit | d4fdeab4db0d0e699c8fbbb07f12c4e1f64d0f94 (patch) | |
| tree | 72231a38ed1cdd48ac6e02acb8b3917acb9dbcf4 /m4/euidaccess.m4 | |
| download | tar-tarball-master.tar.gz | |
Diffstat (limited to 'm4/euidaccess.m4')
| -rw-r--r-- | m4/euidaccess.m4 | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/m4/euidaccess.m4 b/m4/euidaccess.m4 new file mode 100644 index 0000000..e23e9c3 --- /dev/null +++ b/m4/euidaccess.m4 @@ -0,0 +1,52 @@ +# euidaccess.m4 serial 15 +dnl Copyright (C) 2002-2015 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_FUNC_NONREENTRANT_EUIDACCESS], +[ + AC_REQUIRE([gl_FUNC_EUIDACCESS]) + AC_CHECK_DECLS([setregid]) + AC_DEFINE([PREFER_NONREENTRANT_EUIDACCESS], [1], + [Define this if you prefer euidaccess to return the correct result + even if this would make it nonreentrant. Define this only if your + entire application is safe even if the uid or gid might temporarily + change. If your application uses signal handlers or threads it + is probably not safe.]) +]) + +AC_DEFUN([gl_FUNC_EUIDACCESS], +[ + AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) + + dnl Persuade glibc <unistd.h> to declare euidaccess(). + AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + + AC_CHECK_FUNCS([euidaccess]) + if test $ac_cv_func_euidaccess = no; then + HAVE_EUIDACCESS=0 + fi +]) + +# Prerequisites of lib/euidaccess.c. +AC_DEFUN([gl_PREREQ_EUIDACCESS], [ + dnl Prefer POSIX faccessat over non-standard euidaccess. + AC_CHECK_FUNCS_ONCE([faccessat]) + dnl Try various other non-standard fallbacks. + AC_CHECK_HEADERS([libgen.h]) + AC_FUNC_GETGROUPS + + # Solaris 9 and 10 need -lgen to get the eaccess function. + # Save and restore LIBS so -lgen isn't added to it. Otherwise, *all* + # programs in the package would end up linked with that potentially-shared + # library, inducing unnecessary run-time overhead. + LIB_EACCESS= + AC_SUBST([LIB_EACCESS]) + gl_saved_libs=$LIBS + AC_SEARCH_LIBS([eaccess], [gen], + [test "$ac_cv_search_eaccess" = "none required" || + LIB_EACCESS=$ac_cv_search_eaccess]) + AC_CHECK_FUNCS([eaccess]) + LIBS=$gl_saved_libs +]) |