blkid-util: define enum for blkid_do_safeprobe() return values

libblkid really should define an enum for this on its own, but it
currently doesn't and returns literal numeric values. Lets make this
more readable by adding our own symbolic names via an enum.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/shared/blkid-util.h b/src/shared/blkid-util.h
index d4e78627b8..abc4b6166d 100644
--- a/src/shared/blkid-util.h
+++ b/src/shared/blkid-util.h
@@ -34,4 +34,14 @@ static inline int blkid_partition_get_type_id128(blkid_partition p, sd_id128_t *
 
         return sd_id128_from_string(s, ret);
 }
+
+/* Define symbolic names for blkid_do_safeprobe() return values, since blkid only uses literal numbers. We
+ * prefix these symbolic definitions with underscores, to not invade libblkid's namespace needlessly. */
+enum {
+        _BLKID_SAFEPROBE_FOUND     =  0,
+        _BLKID_SAFEPROBE_NOT_FOUND =  1,
+        _BLKID_SAFEPROBE_AMBIGUOUS = -2,
+        _BLKID_SAFEPROBE_ERROR     = -1,
+};
+
 #endif