ref: c2a244ab69976103216b7ff9f3738a14b93bd546
parent: c3d7782a0cbb0aee91edae9b2850d053f27a6f0e
author: Jacob Moody <moody@posixcafe.org>
date: Tue Apr 16 17:25:42 EDT 2024
devfs-posix: fix create() on more strict POSIX systems
--- a/kern/devfs-posix.c
+++ b/kern/devfs-posix.c
@@ -231,7 +231,12 @@
}
}
else {- int m = fsomode(omode & 3) | O_CREAT | O_TRUNC;
+ int m = omode & 3;
+ /*
+ * POSIX specifies that O_TRUNC with O_RDONLY is undefined.
+ * OpenBSD chooses to return an error.
+ */
+ m = fsomode(m == OREAD ? ORDWR : m) | O_CREAT | O_TRUNC;
if(mode & OEXCL)
m |= O_EXCL;
if((fd = open(path, m, uif->mode & perm & 0777)) < 0)