diff options
| -rw-r--r-- | lib/efi_loader/efi_file.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c index 89d6569..92ca444 100644 --- a/lib/efi_loader/efi_file.c +++ b/lib/efi_loader/efi_file.c @@ -202,15 +202,37 @@ static efi_status_t EFIAPI efi_file_open(struct efi_file_handle *file, s16 *file_name, u64 open_mode, u64 attributes) { struct file_handle *fh = to_fh(file); + efi_status_t ret; EFI_ENTRY("%p, %p, \"%ls\", %llx, %llu", file, new_handle, file_name, open_mode, attributes); - *new_handle = file_open(fh->fs, fh, file_name, open_mode, attributes); - if (!*new_handle) - return EFI_EXIT(EFI_NOT_FOUND); + /* Check parameters */ + if (!file || !file || !file_name) { + ret = EFI_INVALID_PARAMETER; + goto out; + } + if (open_mode != EFI_FILE_MODE_READ && + open_mode != (EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE) && + open_mode != (EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE | + EFI_FILE_MODE_CREATE)) { + ret = EFI_INVALID_PARAMETER; + goto out; + } + if ((!(open_mode & EFI_FILE_MODE_CREATE) && attributes) || + (attributes & (EFI_FILE_READ_ONLY | ~EFI_FILE_VALID_ATTR))) { + ret = EFI_INVALID_PARAMETER; + goto out; + } - return EFI_EXIT(EFI_SUCCESS); + /* Open file */ + *new_handle = file_open(fh->fs, fh, file_name, open_mode, attributes); + if (*new_handle) + ret = EFI_SUCCESS; + else + ret = EFI_NOT_FOUND; +out: + return EFI_EXIT(ret); } static efi_status_t file_close(struct file_handle *fh) |