1 files changed, 27 insertions, 0 deletions
diff --git a/src/stdio/perror.c b/src/stdio/perror.c
new file mode 100644
index 00000000..e4637c8a
--- /dev/null
+++ b/src/stdio/perror.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include "stdio_impl.h"
+
+void perror(const char *msg)
+{
+#if 1
+	if (msg) fprintf(stderr, "%s: %m\n", msg, strerror(errno));
+	else fprintf(stderr, "%m\n");
+#else
+	FILE *f = stderr;
+	char *errstr = strerror(errno);
+
+	FLOCK(f);
+	
+	if (msg) {
+		__fwritex(msg, strlen(msg), f);
+		__putc_unlocked(':', f);
+		__putc_unlocked(' ', f);
+	}
+	__fwritex(errstr, strlen(errstr), f);
+	__putc_unlocked('\n', f);
+
+	FUNLOCK(f);
+#endif
+}