diff options
| author | Marcel Moolenaar <marcel@FreeBSD.org> | 2002-03-30 01:36:03 +0000 |
|---|---|---|
| committer | Marcel Moolenaar <marcel@FreeBSD.org> | 2002-03-30 01:36:03 +0000 |
| commit | c61a2c84f05e009b4d12e77d6234fe6ad7d7bd32 (patch) | |
| tree | 3d55502a4e099d5c659ad9af74b377655cb65d2f /sys/boot | |
| parent | d98975ba901602f5fd2afea3399a8412b6fd3e5e (diff) | |
Notes
Diffstat (limited to 'sys/boot')
| -rw-r--r-- | sys/boot/efi/libefi/efifs.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/boot/efi/libefi/efifs.c b/sys/boot/efi/libefi/efifs.c index e4598810d37c..767ce647b39f 100644 --- a/sys/boot/efi/libefi/efifs.c +++ b/sys/boot/efi/libefi/efifs.c @@ -48,7 +48,12 @@ efifs_open(const char *upath, struct open_file *f) CHAR16 *cp; CHAR16 *path; - if (!dev->d_handle) + /* + * We cannot blindly assume that f->f_devdata points to a + * efi_devdesc structure. Before we dereference 'dev', make + * sure that the underlying device is ours. + */ + if (f->f_dev != &efifs_dev || dev->d_handle == NULL) return ENOENT; status = BS->HandleProtocol(dev->d_handle, &sfsid, (VOID **)&sfs); |