[RFC PATCH v2 24/27] libselinux: set errno on label lookup failure

[Christian Göttsche <cgzones@xxxxxxxxxxxxxx>]

selabel_lookup(3) is expected to set errno on lookup failure, i.e. when
it returns NULL.  Set errno if a regular expression failed to compile in
compile_regex().

Signed-off-by: Christian Göttsche <cgzones@xxxxxxxxxxxxxx>
---
v2: add patch
---
 libselinux/src/label_file.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libselinux/src/label_file.h b/libselinux/src/label_file.h
index 3827b5c0..5365086b 100644
--- a/libselinux/src/label_file.h
+++ b/libselinux/src/label_file.h
@@ -407,6 +407,7 @@ static inline int compile_regex(struct spec *spec, const char **errbuf)
 			*errbuf = &regex_error_format_buffer[0];
 		}
 		__pthread_mutex_unlock(&spec->regex_lock);
+		errno = EINVAL;
 		return -1;
 	}
 
-- 
2.40.1