use lighter internal stdio lock in getopt error printing

the public flockfile interface is significantly heavier because it has
to handle the possibility of caller returning or thread exiting while
holding the lock.

diff --git a/src/misc/getopt.c b/src/misc/getopt.c
index cd1f292fb56718e23d1aba6c0a2be2c3a0dc5d30..7d7b116782300afce97dcfd8c24115b87849f4fc 100644 (file)
--- a/src/misc/getopt.c
+++ b/src/misc/getopt.c
@@ -5,6 +5,7 @@
 #include <stdlib.h>
 #include "libc.h"
 #include "locale_impl.h"
+#include "stdio_impl.h"
 
 char *optarg;
 int optind=1, opterr=1, optopt, __optpos, __optreset=0;
@@ -16,12 +17,12 @@ void __getopt_msg(const char *a, const char *b, const char *c, size_t l)
 {
        FILE *f = stderr;
        b = __lctrans_cur(b);
-       flockfile(f);
+       FLOCK(f);
        fputs(a, f)>=0
        && fwrite(b, strlen(b), 1, f)
        && fwrite(c, 1, l, f)==l
        && putc('\n', f);
-       funlockfile(f);
+       FUNLOCK(f);
 }
 
 int getopt(int argc, char * const argv[], const char *optstring)