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author | Dariusz Michaluk <d.michaluk@samsung.com> | 2024-02-13 15:44:51 +0100 |
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committer | Dariusz Michaluk <d.michaluk@samsung.com> | 2024-02-14 10:46:44 +0100 |
commit | c28e9eeaa4dccef63b3b237ebe8a8b5abb23e335 (patch) | |
tree | 504a1953b56446487f4759d3a5f348bbeb925461 /src/gl/m4/fcntl-o.m4 | |
parent | 1778d37a3eec1209d7c9c064318f3ff8c5132490 (diff) | |
parent | 031996ef501f8c3d0532f7df1c38cf2e540a4f11 (diff) | |
download | libtasn1-accepted/tizen_unified.tar.gz libtasn1-accepted/tizen_unified.tar.bz2 libtasn1-accepted/tizen_unified.zip |
Upgrade to libtasn1 4.19.0HEADaccepted/tizen/unified/20240214.164006tizenaccepted/tizen_unified
Change-Id: I893fd2c90c487d6e13b0b10e25b2cafc408da180
Diffstat (limited to 'src/gl/m4/fcntl-o.m4')
-rw-r--r-- | src/gl/m4/fcntl-o.m4 | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/gl/m4/fcntl-o.m4 b/src/gl/m4/fcntl-o.m4 new file mode 100644 index 0000000..4dcde9e --- /dev/null +++ b/src/gl/m4/fcntl-o.m4 @@ -0,0 +1,140 @@ +# fcntl-o.m4 serial 7 +dnl Copyright (C) 2006, 2009-2022 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. + +dnl Written by Paul Eggert. + +AC_PREREQ([2.60]) + +# Test whether the flags O_NOATIME and O_NOFOLLOW actually work. +# Define HAVE_WORKING_O_NOATIME to 1 if O_NOATIME works, or to 0 otherwise. +# Define HAVE_WORKING_O_NOFOLLOW to 1 if O_NOFOLLOW works, or to 0 otherwise. +AC_DEFUN([gl_FCNTL_O_FLAGS], +[ + dnl Persuade glibc <fcntl.h> to define O_NOATIME and O_NOFOLLOW. + AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_CHECK_HEADERS_ONCE([unistd.h]) + AC_CHECK_FUNCS_ONCE([symlink]) + AC_CACHE_CHECK([for working fcntl.h], [gl_cv_header_working_fcntl_h], + [AC_RUN_IFELSE( + [AC_LANG_PROGRAM( + [[#include <sys/types.h> + #include <sys/stat.h> + #if HAVE_UNISTD_H + # include <unistd.h> + #else /* on Windows with MSVC */ + # include <io.h> + # include <stdlib.h> + # defined sleep(n) _sleep ((n) * 1000) + #endif + #include <fcntl.h> + ]GL_MDA_DEFINES[ + #ifndef O_NOATIME + #define O_NOATIME 0 + #endif + #ifndef O_NOFOLLOW + #define O_NOFOLLOW 0 + #endif + static int const constants[] = + { + O_CREAT, O_EXCL, O_NOCTTY, O_TRUNC, O_APPEND, + O_NONBLOCK, O_SYNC, O_ACCMODE, O_RDONLY, O_RDWR, O_WRONLY + }; + ]], + [[ + int result = !constants; + #if HAVE_SYMLINK + { + static char const sym[] = "conftest.sym"; + if (symlink ("/dev/null", sym) != 0) + result |= 2; + else + { + int fd = open (sym, O_WRONLY | O_NOFOLLOW | O_CREAT, 0); + if (fd >= 0) + { + close (fd); + result |= 4; + } + } + if (unlink (sym) != 0 || symlink (".", sym) != 0) + result |= 2; + else + { + int fd = open (sym, O_RDONLY | O_NOFOLLOW); + if (fd >= 0) + { + close (fd); + result |= 4; + } + } + unlink (sym); + } + #endif + { + static char const file[] = "confdefs.h"; + int fd = open (file, O_RDONLY | O_NOATIME); + if (fd < 0) + result |= 8; + else + { + struct stat st0; + if (fstat (fd, &st0) != 0) + result |= 16; + else + { + char c; + sleep (1); + if (read (fd, &c, 1) != 1) + result |= 24; + else + { + if (close (fd) != 0) + result |= 32; + else + { + struct stat st1; + if (stat (file, &st1) != 0) + result |= 40; + else + if (st0.st_atime != st1.st_atime) + result |= 64; + } + } + } + } + } + return result;]])], + [gl_cv_header_working_fcntl_h=yes], + [case $? in #( + 4) gl_cv_header_working_fcntl_h='no (bad O_NOFOLLOW)';; #( + 64) gl_cv_header_working_fcntl_h='no (bad O_NOATIME)';; #( + 68) gl_cv_header_working_fcntl_h='no (bad O_NOATIME, O_NOFOLLOW)';; #( + *) gl_cv_header_working_fcntl_h='no';; + esac], + [case "$host_os" in + # Guess 'no' on native Windows. + mingw*) gl_cv_header_working_fcntl_h='no' ;; + *) gl_cv_header_working_fcntl_h=cross-compiling ;; + esac + ]) + ]) + + case $gl_cv_header_working_fcntl_h in #( + *O_NOATIME* | no | cross-compiling) ac_val=0;; #( + *) ac_val=1;; + esac + AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOATIME], [$ac_val], + [Define to 1 if O_NOATIME works.]) + + case $gl_cv_header_working_fcntl_h in #( + *O_NOFOLLOW* | no | cross-compiling) ac_val=0;; #( + *) ac_val=1;; + esac + AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOFOLLOW], [$ac_val], + [Define to 1 if O_NOFOLLOW works.]) +]) |