More missing _unlocked <stdio.h> functions.
Also simplify trivial one-liners like perror/puts/fputs, and clean up
fread/fwrite slightly.
Fix perror to match POSIX.
Add basic perror and *_unlocked tests.
Bug: N/A
Test: ran tests
Change-Id: I63f83c8e0c15c3c4096509d17421ac331b6fc23d
diff --git a/libc/include/stdio.h b/libc/include/stdio.h
index 559e52a..2d45fc5 100644
--- a/libc/include/stdio.h
+++ b/libc/include/stdio.h
@@ -256,7 +256,20 @@
int fileno_unlocked(FILE* __fp) __INTRODUCED_IN(24);
#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
-#endif /* __USE_BSD */
+#endif
+
+#if defined(__USE_BSD)
+int fflush_unlocked(FILE* __fp) __INTRODUCED_IN_FUTURE;
+int fgetc_unlocked(FILE* __fp) __INTRODUCED_IN_FUTURE;
+int fputc_unlocked(int __ch, FILE* __fp) __INTRODUCED_IN_FUTURE;
+size_t fread_unlocked(void* __buf, size_t __size, size_t __count, FILE* __fp) __INTRODUCED_IN_FUTURE;
+size_t fwrite_unlocked(const void* __buf, size_t __size, size_t __count, FILE* __fp) __INTRODUCED_IN_FUTURE;
+#endif
+
+#if defined(__USE_GNU)
+int fputs_unlocked(const char* __s, FILE* __fp) __INTRODUCED_IN_FUTURE;
+char* fgets_unlocked(char* __buf, int __size, FILE* __fp) __INTRODUCED_IN_FUTURE;
+#endif
#if defined(__BIONIC_INCLUDE_FORTIFY_HEADERS)
#include <bits/fortify/stdio.h>