tls: avoid unnecessary changes to POSIX build, part 2

On reflection, the previous commit may have been ill-advised.  There
are many calls to open_read_close() and most shouldn't be able to
access special devices.  (Though in practice only a few are enabled
in busybox-w32.)

Nonetheless, I've implemented a new mechanism which uses the macro
MINGW_SPECIAL() to mark calls to functions that are allowed to
access special devices.

An unrelated change is to avoid compiling fputs_stdout() in
coreutils/printf.c for the POSIX build.

1 files changed, 2 insertions, 6 deletions

diff --git a/coreutils/shred.c b/coreutils/shred.c
index 86d4b66b4..0b11b9491 100644
--- a/coreutils/shred.c
+++ b/coreutils/shred.c
@@ -38,10 +38,6 @@
 
 #include "libbb.h"
 
-#if ENABLE_PLATFORM_MINGW32
-#define xopen mingw_xopen
-#endif
-
 int shred_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int shred_main(int argc UNUSED_PARAM, char **argv)
 {
@@ -61,9 +57,9 @@ int shred_main(int argc UNUSED_PARAM, char **argv)
         opt = getopt32(argv, "fuzn:+vx", &num_iter);
         argv += optind;
 
-        zero_fd = xopen("/dev/zero", O_RDONLY);
+        zero_fd = MINGW_SPECIAL(xopen)("/dev/zero", O_RDONLY);
         if (num_iter != 0)
-                rand_fd = xopen("/dev/urandom", O_RDONLY);
+                rand_fd = MINGW_SPECIAL(xopen)("/dev/urandom", O_RDONLY);
 
         if (!*argv)
                 bb_show_usage();