hare

commit 307334353f0b9af87e4cad88f1289addcb3553be
parent 7c8dc59f8a5d35b5490893665ad8957c8c61e7e9
Author: Drew DeVault <sir@cmpwn.com>
Date:   Wed, 24 Feb 2021 10:50:33 -0500

os::exec: use O_PATH for exec fd

Diffstat:
M
os/exec/+linux.ha
 | 
4
+++-

1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/os/exec/+linux.ha b/os/exec/+linux.ha
@@ -36,7 +36,9 @@ fn open(path: str) (platform | os_error) = {
 			return errno_to_os(rt::EACCES);
 		},
 	};
-	return match (rt::open(path: *const char, rt::O_RDONLY, 0u)) {
+	// O_PATH is used because it allows us to use an executable for which we
+	// have execute permissions, but not read permissions.
+	return match (rt::open(path: *const char, rt::O_PATH, 0u)) {
 		fd: int => fd,
 		err: rt::errno => errno_to_os(err),
 	};