Implement the information type EFI_FILE_SYSTEM_INFO in the service GetInfo() of the EFI_FILE_PROTOCOL.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- include/efi_api.h | 13 +++++++++++++ include/efi_loader.h | 2 ++ lib/efi_loader/efi_file.c | 34 ++++++++++++++++++++++++++++++++++ 3 files changed, 49 insertions(+)
diff --git a/include/efi_api.h b/include/efi_api.h index 43c8c891e7..16da736113 100644 --- a/include/efi_api.h +++ b/include/efi_api.h @@ -868,6 +868,10 @@ struct efi_simple_file_system_protocol { EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \ 0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
+#define EFI_FILE_SYSTEM_INFO_GUID \ + EFI_GUID(0x09576e93, 0x6d3f, 0x11d2, \ + 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) + #define EFI_FILE_MODE_READ 0x0000000000000001 #define EFI_FILE_MODE_WRITE 0x0000000000000002 #define EFI_FILE_MODE_CREATE 0x8000000000000000 @@ -891,6 +895,15 @@ struct efi_file_info { s16 file_name[0]; };
+struct efi_file_system_info { + u64 size; + u8 read_only; + u64 volume_size; + u64 free_space; + u32 block_size; + u16 volume_label[0]; +}; + #define EFI_DRIVER_BINDING_PROTOCOL_GUID \ EFI_GUID(0x18a031ab, 0xb443, 0x4d1a,\ 0xa5, 0xc0, 0x0c, 0x09, 0x26, 0x1e, 0x9f, 0x71) diff --git a/include/efi_loader.h b/include/efi_loader.h index ee553c667f..ab20773947 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -112,6 +112,8 @@ extern const efi_guid_t efi_guid_loaded_image; extern const efi_guid_t efi_guid_device_path_to_text_protocol; extern const efi_guid_t efi_simple_file_system_protocol_guid; extern const efi_guid_t efi_file_info_guid; +/* GUID for file system information */ +extern const efi_guid_t efi_file_system_info_guid; extern const efi_guid_t efi_guid_device_path_utilities_protocol;
extern unsigned int __efi_runtime_start, __efi_runtime_stop; diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c index 1e2751f7cf..37a999d0b2 100644 --- a/lib/efi_loader/efi_file.c +++ b/lib/efi_loader/efi_file.c @@ -12,6 +12,9 @@ #include <malloc.h> #include <fs.h>
+/* GUID for file system information */ +const efi_guid_t efi_file_system_info_guid = EFI_FILE_SYSTEM_INFO_GUID; + struct file_system { struct efi_simple_file_system_protocol base; struct efi_device_path *dp; @@ -472,6 +475,37 @@ static efi_status_t EFIAPI efi_file_getinfo(struct efi_file_handle *file, info->attribute |= EFI_FILE_DIRECTORY;
ascii2unicode((u16 *)info->file_name, filename); + } else if (!guidcmp(info_type, &efi_file_system_info_guid)) { + struct efi_file_system_info *info = buffer; + disk_partition_t part; + efi_uintn_t required_size; + int r; + + if (fh->fs->part >= 1) + r = part_get_info(fh->fs->desc, fh->fs->part, &part); + else + r = part_get_info_whole_disk(fh->fs->desc, &part); + if (r < 0) { + ret = EFI_DEVICE_ERROR; + goto error; + } + required_size = sizeof(info) + 2 * + (strlen((const char *)part.name) + 1); + if (*buffer_size < required_size) { + *buffer_size = required_size; + ret = EFI_BUFFER_TOO_SMALL; + goto error; + } + + memset(info, 0, required_size); + + info->size = required_size; + info->read_only = true; + info->volume_size = part.size * part.blksz; + info->free_space = 0; + info->block_size = part.blksz; + ascii2unicode((u16 *)info->volume_label, + (const char *)part.name); } else { ret = EFI_UNSUPPORTED; }