lib/posix-fdio: Fix lseek error on readonly files

Previously lseek would wrongly fail when seeking a read-only-opened
file due to a logic error. This change fixes this oversight.

Signed-off-by: Andrei Tatar <andrei@unikraft.io>
Approved-by: Sergiu Moga <sergiu@unikraft.io>
Reviewed-by: Sergiu Moga <sergiu@unikraft.io>
GitHub-Closes: #1602

diff --git a/lib/posix-fdio/fdio.c b/lib/posix-fdio/fdio.c
index dc8b2a6736410f28305856780ac3308647d0f4ad..0d4b50b5cc514fcefe72b0280a1ccedec14b74e2 100644 (file)
--- a/lib/posix-fdio/fdio.c
+++ b/lib/posix-fdio/fdio.c
@@ -409,8 +409,6 @@ off_t uk_sys_lseek(struct uk_ofile *of, off_t offset, int whence)
 
        mode = of->mode;
 
-       if (unlikely(!_CAN_WRITE(mode)))
-               return -EINVAL;
        if (unlikely(!_IS_SEEKABLE(mode)))
                return -ESPIPE;