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efi_loader: check parameters of efi_file_open()
Check the parameters of efi_file_open(). Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
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a90bf07afc
commit
143acd1ef1
1 changed files with 26 additions and 4 deletions
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@ -202,15 +202,37 @@ static efi_status_t EFIAPI efi_file_open(struct efi_file_handle *file,
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s16 *file_name, u64 open_mode, u64 attributes)
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{
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struct file_handle *fh = to_fh(file);
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efi_status_t ret;
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EFI_ENTRY("%p, %p, \"%ls\", %llx, %llu", file, new_handle, file_name,
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open_mode, attributes);
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*new_handle = file_open(fh->fs, fh, file_name, open_mode, attributes);
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if (!*new_handle)
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return EFI_EXIT(EFI_NOT_FOUND);
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/* Check parameters */
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if (!file || !file || !file_name) {
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ret = EFI_INVALID_PARAMETER;
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goto out;
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}
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if (open_mode != EFI_FILE_MODE_READ &&
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open_mode != (EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE) &&
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open_mode != (EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE |
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EFI_FILE_MODE_CREATE)) {
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ret = EFI_INVALID_PARAMETER;
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goto out;
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}
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if ((!(open_mode & EFI_FILE_MODE_CREATE) && attributes) ||
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(attributes & (EFI_FILE_READ_ONLY | ~EFI_FILE_VALID_ATTR))) {
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ret = EFI_INVALID_PARAMETER;
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goto out;
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}
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return EFI_EXIT(EFI_SUCCESS);
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/* Open file */
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*new_handle = file_open(fh->fs, fh, file_name, open_mode, attributes);
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if (*new_handle)
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ret = EFI_SUCCESS;
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else
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ret = EFI_NOT_FOUND;
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out:
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return EFI_EXIT(ret);
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}
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static efi_status_t file_close(struct file_handle *fh)
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