Move c_src dirs back to toplevel

[bcachefs-tools-debian] / libbcachefs / errcode.c

diff --git a/libbcachefs/errcode.c b/libbcachefs/errcode.c
new file mode 100644 (file)
index 0000000..d260ff9
--- /dev/null
+++ b/libbcachefs/errcode.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "bcachefs.h"
+#include "errcode.h"
+
+#include <linux/errname.h>
+
+static const char * const bch2_errcode_strs[] = {
+#define x(class, err) [BCH_ERR_##err - BCH_ERR_START] = #err,
+       BCH_ERRCODES()
+#undef x
+       NULL
+};
+
+static unsigned bch2_errcode_parents[] = {
+#define x(class, err) [BCH_ERR_##err - BCH_ERR_START] = class,
+       BCH_ERRCODES()
+#undef x
+};
+
+const char *bch2_err_str(int err)
+{
+       const char *errstr;
+
+       err = abs(err);
+
+       BUG_ON(err >= BCH_ERR_MAX);
+
+       if (err >= BCH_ERR_START)
+               errstr = bch2_errcode_strs[err - BCH_ERR_START];
+       else if (err)
+               errstr = errname(err);
+       else
+               errstr = "(No error)";
+       return errstr ?: "(Invalid error)";
+}
+
+bool __bch2_err_matches(int err, int class)
+{
+       err     = abs(err);
+       class   = abs(class);
+
+       BUG_ON(err      >= BCH_ERR_MAX);
+       BUG_ON(class    >= BCH_ERR_MAX);
+
+       while (err >= BCH_ERR_START && err != class)
+               err = bch2_errcode_parents[err - BCH_ERR_START];
+
+       return err == class;
+}
+
+int __bch2_err_class(int err)
+{
+       err = -err;
+       BUG_ON((unsigned) err >= BCH_ERR_MAX);
+
+       while (err >= BCH_ERR_START && bch2_errcode_parents[err - BCH_ERR_START])
+               err = bch2_errcode_parents[err - BCH_ERR_START];
+
+       return -err;
+}
+
+const char *bch2_blk_status_to_str(blk_status_t status)
+{
+       if (status == BLK_STS_REMOVED)
+               return "device removed";
+       return blk_status_to_str(status);
+}