From 2d733c424ba21cfa55386e81d668036cc801fc6d Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Wed, 20 Jan 1999 15:48:22 +0000 Subject: More general fix based on bug report and patch from Ian Lance Taylor to fix this problem: There is a small bug in __rtems_close in c/src/lib/libc/libio.c. It does not check whether the file descriptor it is passed is open. This can cause it to make a null dereference if it is passed a file descriptor which is in the valid range but which was not opened, or which was already closed. --- c/src/lib/libc/fpathconf.c | 1 + 1 file changed, 1 insertion(+) (limited to 'c/src/lib/libc/fpathconf.c') diff --git a/c/src/lib/libc/fpathconf.c b/c/src/lib/libc/fpathconf.c index f3fb1162d0..97c392b5af 100644 --- a/c/src/lib/libc/fpathconf.c +++ b/c/src/lib/libc/fpathconf.c @@ -28,6 +28,7 @@ long fpathconf( rtems_libio_check_fd(fd); iop = rtems_libio_iop(fd); + rtems_libio_check_is_open(iop); rtems_libio_check_permissions(iop, LIBIO_FLAGS_READ); /* -- cgit v1.2.3