user/libc: generate strerror from camellia/errno.h

1 files changed, 11 insertions, 0 deletions

diff --git a/src/user/lib/string/strerror.c b/src/user/lib/string/strerror.c
new file mode 100644
index 0000000..1f5fc29
--- /dev/null
+++ b/src/user/lib/string/strerror.c
@@ -0,0 +1,11 @@
+#include <string.h>
+
+static const char *errstr[] = {
+#	define E(n, str) [n] = str,
+#	include <__errno.h>
+#	undef E
+};
+
+char *strerror(int n) {
+	return (char*)(errstr[n] ? errstr[n] : "unknown error");
+}