[PATCH 1/1] efi_loader: implement non-blocking file services
Heinrich Schuchardt
xypron.glpk at gmx.de
Fri Apr 30 12:42:28 CEST 2021
On 30.04.21 12:09, Michal Simek wrote:
> Hi Heinrich,
>
> pá 1. 1. 2021 v 19:29 odesílatel Heinrich Schuchardt
> <xypron.glpk at gmx.de> napsal:
>>
>> Implement services OpenEx(), ReadEx(), WriteEx(), FlushEx() of the
>> EFI_FILE_PROTOCOL.
>>
>> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
>> ---
>> include/efi_api.h | 28 ++--
>> lib/efi_loader/efi_file.c | 317 ++++++++++++++++++++++++++++++++------
>> 2 files changed, 280 insertions(+), 65 deletions(-)
>>
>> diff --git a/include/efi_api.h b/include/efi_api.h
>> index ecb43a0607..2b54ee02a2 100644
>> --- a/include/efi_api.h
>> +++ b/include/efi_api.h
>> @@ -1589,35 +1589,35 @@ struct efi_file_io_token {
>>
>> struct efi_file_handle {
>> u64 rev;
>> - efi_status_t (EFIAPI *open)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *open)(struct efi_file_handle *this,
>> struct efi_file_handle **new_handle,
>> u16 *file_name, u64 open_mode, u64 attributes);
>> - efi_status_t (EFIAPI *close)(struct efi_file_handle *file);
>> - efi_status_t (EFIAPI *delete)(struct efi_file_handle *file);
>> - efi_status_t (EFIAPI *read)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *close)(struct efi_file_handle *this);
>> + efi_status_t (EFIAPI *delete)(struct efi_file_handle *this);
>> + efi_status_t (EFIAPI *read)(struct efi_file_handle *this,
>> efi_uintn_t *buffer_size, void *buffer);
>> - efi_status_t (EFIAPI *write)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *write)(struct efi_file_handle *this,
>> efi_uintn_t *buffer_size, void *buffer);
>> - efi_status_t (EFIAPI *getpos)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *getpos)(struct efi_file_handle *this,
>> u64 *pos);
>> - efi_status_t (EFIAPI *setpos)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *setpos)(struct efi_file_handle *this,
>> u64 pos);
>> - efi_status_t (EFIAPI *getinfo)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *getinfo)(struct efi_file_handle *this,
>> const efi_guid_t *info_type, efi_uintn_t *buffer_size,
>> void *buffer);
>> - efi_status_t (EFIAPI *setinfo)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *setinfo)(struct efi_file_handle *this,
>> const efi_guid_t *info_type, efi_uintn_t buffer_size,
>> void *buffer);
>> - efi_status_t (EFIAPI *flush)(struct efi_file_handle *file);
>> - efi_status_t (EFIAPI *open_ex)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *flush)(struct efi_file_handle *this);
>> + efi_status_t (EFIAPI *open_ex)(struct efi_file_handle *this,
>> struct efi_file_handle **new_handle,
>> u16 *file_name, u64 open_mode, u64 attributes,
>> struct efi_file_io_token *token);
>> - efi_status_t (EFIAPI *read_ex)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *read_ex)(struct efi_file_handle *this,
>> struct efi_file_io_token *token);
>> - efi_status_t (EFIAPI *write_ex)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *write_ex)(struct efi_file_handle *this,
>> struct efi_file_io_token *token);
>> - efi_status_t (EFIAPI *flush_ex)(struct efi_file_handle *file,
>> + efi_status_t (EFIAPI *flush_ex)(struct efi_file_handle *this,
>> struct efi_file_io_token *token);
>> };
>>
>> diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c
>> index 72b7ec1e63..8ece8e71ee 100644
>> --- a/lib/efi_loader/efi_file.c
>> +++ b/lib/efi_loader/efi_file.c
>> @@ -246,18 +246,16 @@ error:
>> return NULL;
>> }
>>
>> -static efi_status_t EFIAPI efi_file_open(struct efi_file_handle *file,
>> - struct efi_file_handle **new_handle,
>> - u16 *file_name, u64 open_mode, u64 attributes)
>> +static efi_status_t efi_file_open_int(struct efi_file_handle *this,
>> + struct efi_file_handle **new_handle,
>> + u16 *file_name, u64 open_mode,
>> + u64 attributes)
>> {
>> - struct file_handle *fh = to_fh(file);
>> + struct file_handle *fh = to_fh(this);
>> efi_status_t ret;
>>
>> - EFI_ENTRY("%p, %p, \"%ls\", %llx, %llu", file, new_handle,
>> - file_name, open_mode, attributes);
>> -
>> /* Check parameters */
>> - if (!file || !new_handle || !file_name) {
>> + if (!this || !new_handle || !file_name) {
>> ret = EFI_INVALID_PARAMETER;
>> goto out;
>> }
>> @@ -291,6 +289,75 @@ static efi_status_t EFIAPI efi_file_open(struct efi_file_handle *file,
>> } else {
>> ret = EFI_NOT_FOUND;
>> }
>> +out:
>> + return ret;
>> +}
>> +
>> +/**
>> + * efi_file_open_()
>> + *
>> + * This function implements the Open service of the File Protocol.
>> + * See the UEFI spec for details.
>> + *
>> + * @this: EFI_FILE_PROTOCOL instance
>> + * @new_handle: on return pointer to file handle
>> + * @file_name: file name
>> + * @open_mode: mode to open the file (read, read/write, create/read/write)
>> + * @attributes: attributes for newly created file
>> + */
>> +static efi_status_t EFIAPI efi_file_open(struct efi_file_handle *this,
>> + struct efi_file_handle **new_handle,
>> + u16 *file_name, u64 open_mode,
>> + u64 attributes)
>> +{
>> + efi_status_t ret;
>> +
>> + EFI_ENTRY("%p, %p, \"%ls\", %llx, %llu", this, new_handle,
>> + file_name, open_mode, attributes);
>> +
>> + ret = efi_file_open_int(this, new_handle, file_name, open_mode,
>> + attributes);
>> +
>> + return EFI_EXIT(ret);
>> +}
>> +
>> +/**
>> + * efi_file_open_ex() - open file asynchronously
>> + *
>> + * This function implements the OpenEx service of the File Protocol.
>> + * See the UEFI spec for details.
>> + *
>> + * @this: EFI_FILE_PROTOCOL instance
>> + * @new_handle: on return pointer to file handle
>> + * @file_name: file name
>> + * @open_mode: mode to open the file (read, read/write, create/read/write)
>> + * @attributes: attributes for newly created file
>> + * @token: transaction token
>> + */
>> +static efi_status_t EFIAPI efi_file_open_ex(struct efi_file_handle *this,
>> + struct efi_file_handle **new_handle,
>> + u16 *file_name, u64 open_mode,
>> + u64 attributes,
>> + struct efi_file_io_token *token)
>> +{
>> + efi_status_t ret;
>> +
>> + EFI_ENTRY("%p, %p, \"%ls\", %llx, %llu, %p", this, new_handle,
>> + file_name, open_mode, attributes, token);
>> +
>> + if (!token) {
>> + ret = EFI_INVALID_PARAMETER;
>> + goto out;
>> + }
>> +
>> + ret = efi_file_open_int(this, new_handle, file_name, open_mode,
>> + attributes);
>> +
>> + if (ret == EFI_SUCCESS && token->event) {
>> + token->status = EFI_SUCCESS;
>> + efi_signal_event(token->event);
>> + }
>> +
>> out:
>> return EFI_EXIT(ret);
>> }
>> @@ -441,19 +508,15 @@ static efi_status_t dir_read(struct file_handle *fh, u64 *buffer_size,
>> return EFI_SUCCESS;
>> }
>>
>> -static efi_status_t EFIAPI efi_file_read(struct efi_file_handle *file,
>> - efi_uintn_t *buffer_size, void *buffer)
>> +static efi_status_t efi_file_read_int(struct efi_file_handle *this,
>> + efi_uintn_t *buffer_size, void *buffer)
>> {
>> - struct file_handle *fh = to_fh(file);
>> + struct file_handle *fh = to_fh(this);
>> efi_status_t ret = EFI_SUCCESS;
>> u64 bs;
>>
>> - EFI_ENTRY("%p, %p, %p", file, buffer_size, buffer);
>> -
>> - if (!buffer_size) {
>> - ret = EFI_INVALID_PARAMETER;
>> - goto error;
>> - }
>> + if (!this || !buffer_size || !buffer)
>> + return EFI_INVALID_PARAMETER;
>>
>> bs = *buffer_size;
>> if (fh->isdir)
>> @@ -465,34 +528,77 @@ static efi_status_t EFIAPI efi_file_read(struct efi_file_handle *file,
>> else
>> *buffer_size = SIZE_MAX;
>>
>> -error:
>> + return ret;
>> +}
>> +
>> +/**
>> + * efi_file_read() - read file
>> + *
>> + * This function implements the Read() service of the EFI_FILE_PROTOCOL.
>> + *
>> + * See the Unified Extensible Firmware Interface (UEFI) specification for
>> + * details.
>> + *
>> + * @this: file protocol instance
>> + * @buffer_size: number of bytes to read
>> + * @buffer: read buffer
>> + * Return: status code
>> + */
>> +static efi_status_t EFIAPI efi_file_read(struct efi_file_handle *this,
>> + efi_uintn_t *buffer_size, void *buffer)
>> +{
>> + efi_status_t ret;
>> +
>> + EFI_ENTRY("%p, %p, %p", this, buffer_size, buffer);
>> +
>> + ret = efi_file_read_int(this, buffer_size, buffer);
>> +
>> return EFI_EXIT(ret);
>> }
>>
>> /**
>> - * efi_file_write() - write to file
>> + * efi_file_read_ex() - read file asynchonously
>> *
>> - * This function implements the Write() service of the EFI_FILE_PROTOCOL.
>> + * This function implements the ReadEx() service of the EFI_FILE_PROTOCOL.
>> *
>> * See the Unified Extensible Firmware Interface (UEFI) specification for
>> * details.
>> *
>> - * @file: file handle
>> - * @buffer_size: number of bytes to write
>> - * @buffer: buffer with the bytes to write
>> + * @this: file protocol instance
>> + * @token: transaction token
>> * Return: status code
>> */
>> -static efi_status_t EFIAPI efi_file_write(struct efi_file_handle *file,
>> - efi_uintn_t *buffer_size,
>> - void *buffer)
>> +static efi_status_t EFIAPI efi_file_read_ex(struct efi_file_handle *this,
>> + struct efi_file_io_token *token)
>> {
>> - struct file_handle *fh = to_fh(file);
>> + efi_status_t ret;
>> +
>> + EFI_ENTRY("%p, %p", this, token);
>> +
>> + if (!token) {
>> + ret = EFI_INVALID_PARAMETER;
>> + goto out;
>> + }
>> +
>> + ret = efi_file_read_int(this, &token->buffer_size, token->buffer);
>> +
>> + if (ret == EFI_SUCCESS && token->event) {
>> + token->status = EFI_SUCCESS;
>> + efi_signal_event(token->event);
>> + }
>> +
>> +out:
>> + return EFI_EXIT(ret);
>> +}
>> +
>> +static efi_status_t efi_file_write_int(struct efi_file_handle *this,
>> + efi_uintn_t *buffer_size, void *buffer)
>> +{
>> + struct file_handle *fh = to_fh(this);
>> efi_status_t ret = EFI_SUCCESS;
>> loff_t actwrite;
>>
>> - EFI_ENTRY("%p, %p, %p", file, buffer_size, buffer);
>> -
>> - if (!file || !buffer_size || !buffer) {
>> + if (!this || !buffer_size || !buffer) {
>> ret = EFI_INVALID_PARAMETER;
>> goto out;
>> }
>> @@ -520,6 +626,67 @@ static efi_status_t EFIAPI efi_file_write(struct efi_file_handle *file,
>> *buffer_size = actwrite;
>> fh->offset += actwrite;
>>
>> +out:
>> + return ret;
>> +}
>> +
>> +/**
>> + * efi_file_write() - write to file
>> + *
>> + * This function implements the Write() service of the EFI_FILE_PROTOCOL.
>> + *
>> + * See the Unified Extensible Firmware Interface (UEFI) specification for
>> + * details.
>> + *
>> + * @this: file protocol instance
>> + * @buffer_size: number of bytes to write
>> + * @buffer: buffer with the bytes to write
>> + * Return: status code
>> + */
>> +static efi_status_t EFIAPI efi_file_write(struct efi_file_handle *this,
>> + efi_uintn_t *buffer_size,
>> + void *buffer)
>> +{
>> + efi_status_t ret;
>> +
>> + EFI_ENTRY("%p, %p, %p", this, buffer_size, buffer);
>> +
>> + ret = efi_file_write_int(this, buffer_size, buffer);
>> +
>> + return EFI_EXIT(ret);
>> +}
>> +
>> +/**
>> + * efi_file_write_ex() - write to file
>> + *
>> + * This function implements the WriteEx() service of the EFI_FILE_PROTOCOL.
>> + *
>> + * See the Unified Extensible Firmware Interface (UEFI) specification for
>> + * details.
>> + *
>> + * @this: file protocol instance
>> + * @token: transaction token
>> + * Return: status code
>> + */
>> +static efi_status_t EFIAPI efi_file_write_ex(struct efi_file_handle *this,
>> + struct efi_file_io_token *token)
>> +{
>> + efi_status_t ret;
>> +
>> + EFI_ENTRY("%p, %p", this, token);
>> +
>> + if (!token) {
>> + ret = EFI_INVALID_PARAMETER;
>> + goto out;
>> + }
>> +
>> + ret = efi_file_write_int(this, &token->buffer_size, token->buffer);
>> +
>> + if (ret == EFI_SUCCESS && token->event) {
>> + token->status = EFI_SUCCESS;
>> + efi_signal_event(token->event);
>> + }
>> +
>> out:
>> return EFI_EXIT(ret);
>> }
>> @@ -761,36 +928,84 @@ out:
>> return EFI_EXIT(ret);
>> }
>>
>> -static efi_status_t EFIAPI efi_file_flush(struct efi_file_handle *file)
>> +/**
>> + * efi_file_flush_int() - flush file
>> + *
>> + * This is the internal implementation of the Flush() and FlushEx() services of
>> + * the EFI_FILE_PROTOCOL.
>> + *
>> + * @this: file protocol instance
>> + * Return: status code
>> + */
>> +static efi_status_t efi_file_flush_int(struct efi_file_handle *this)
>> {
>> - EFI_ENTRY("%p", file);
>> - return EFI_EXIT(EFI_SUCCESS);
>> -}
>> + struct file_handle *fh = to_fh(this);
>>
>> -static efi_status_t EFIAPI efi_file_open_ex(struct efi_file_handle *file,
>> - struct efi_file_handle **new_handle,
>> - u16 *file_name, u64 open_mode, u64 attributes,
>> - struct efi_file_io_token *token)
>> -{
>> - return EFI_UNSUPPORTED;
>> -}
>> + if (!this)
>> + return EFI_INVALID_PARAMETER;
>>
>> -static efi_status_t EFIAPI efi_file_read_ex(struct efi_file_handle *file,
>> - struct efi_file_io_token *token)
>> -{
>> - return EFI_UNSUPPORTED;
>> + if (!(fh->open_mode & EFI_FILE_MODE_WRITE))
>> + return EFI_ACCESS_DENIED;
>> +
>> + /* TODO: flush for file position after end of file */
>> + return EFI_SUCCESS;
>> }
>>
>> -static efi_status_t EFIAPI efi_file_write_ex(struct efi_file_handle *file,
>> - struct efi_file_io_token *token)
>> +/**
>> + * efi_file_flush() - flush file
>> + *
>> + * This function implements the Flush() service of the EFI_FILE_PROTOCOL.
>> + *
>> + * See the Unified Extensible Firmware Interface (UEFI) specification for
>> + * details.
>> + *
>> + * @this: file protocol instance
>> + * Return: status code
>> + */
>> +static efi_status_t EFIAPI efi_file_flush(struct efi_file_handle *this)
>> {
>> - return EFI_UNSUPPORTED;
>> + efi_status_t ret;
>> +
>> + EFI_ENTRY("%p", this);
>> +
>> + ret = efi_file_flush_int(this);
>> +
>> + return EFI_EXIT(ret);
>> }
>>
>> -static efi_status_t EFIAPI efi_file_flush_ex(struct efi_file_handle *file,
>> - struct efi_file_io_token *token)
>> +/**
>> + * efi_file_flush_ex() - flush file
>> + *
>> + * This function implements the FlushEx() service of the EFI_FILE_PROTOCOL.
>> + *
>> + * See the Unified Extensible Firmware Interface (UEFI) specification for
>> + * details.
>> + *
>> + * @this: file protocol instance
>> + * @token: transaction token
>> + * Return: status code
>> + */
>> +static efi_status_t EFIAPI efi_file_flush_ex(struct efi_file_handle *this,
>> + struct efi_file_io_token *token)
>> {
>> - return EFI_UNSUPPORTED;
>> + efi_status_t ret;
>> +
>> + EFI_ENTRY("%p, %p", this, token);
>> +
>> + if (!token) {
>> + ret = EFI_INVALID_PARAMETER;
>> + goto out;
>> + }
>> +
>> + ret = efi_file_flush_int(this);
>> +
>> + if (ret == EFI_SUCCESS && token->event) {
>> + token->status = EFI_SUCCESS;
>> + efi_signal_event(token->event);
>> + }
>> +
>> +out:
>> + return EFI_EXIT(ret);
>> }
>>
>> static const struct efi_file_handle efi_file_handle_protocol = {
>> --
>> 2.29.2
>>
>
> I have been trying to boot Fedora 35 Rawhide which booted fine with
> 2021.01 version but not with 2021.04 version.
> I have bisect it and this patch is causing that grub doesn't start
> automatically for this image.
> (I haven't checked others yet).
>
>
> U-Boot 2021.01-00398-gdb12f518edb0 (Apr 30 2021 - 12:00:13 +0200)
>
> Model: ZynqMP ZCU104 RevC
> Board: Xilinx ZynqMP
> DRAM: 2 GiB
> PMUFW: v1.1
> EL Level: EL2
> Chip ID: zu7e
> WDT: Started with servicing (60s timeout)
> NAND: 0 MiB
> MMC: mmc at ff170000: 0
> Loading Environment from FAT... *** Warning - bad CRC, using default environment
>
> In: serial
> Out: serial
> Err: serial
> Bootmode: LVL_SHFT_SD_MODE1
> Reset reason: EXTERNAL
> Net:
> ZYNQ GEM: ff0e0000, mdio bus ff0e0000, phyaddr 12, interface rgmii-id
> eth0: ethernet at ff0e0000
> Hit any key to stop autoboot: 0
> switch to partitions #0, OK
> mmc0 is current device
> Scanning mmc 0:1...
> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
> Scanning disk mmc at ff170000.blk...
> Found 4 disks
> Loading Boot0000 'Fedora' failed
> EFI boot manager: Cannot load any image
> Found EFI removable media binary efi/boot/bootaa64.efi
> 858216 bytes read in 79 ms (10.4 MiB/s)
> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
> Booting /efi\boot\bootaa64.efi
> System BootOrder not found. Initializing defaults.
> Could not read \EFI\: Invalid Parameter
> Error: could not find boot options: Invalid Parameter
> start_image() returned Invalid Parameter
> ## Application failed, r = 2
> EFI LOAD FAILED: continuing...
> JTAG: Trying to boot script at 0x20000000
> ## Executing script at 20000000
> Wrong image format for "source" command
> JTAG: SCRIPT FAILED: continuing...
> switch to partitions #0, OK
> mmc0 is current device
> Scanning mmc 0:1...
> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
> Loading Boot0000 'Fedora' failed
> EFI boot manager: Cannot load any image
> Found EFI removable media binary efi/boot/bootaa64.efi
> 858216 bytes read in 78 ms (10.5 MiB/s)
> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
> Booting /efi\boot\bootaa64.efi
> System BootOrder not found. Initializing defaults.
> Could not read \EFI\: Invalid Parameter
> Error: could not find boot options: Invalid Parameter
> start_image() returned Invalid Parameter
> ## Application failed, r = 2
> EFI LOAD FAILED: continuing...
>
> when this patch is reverted I am getting
>
> eth0: ethernet at ff0e0000
> Hit any key to stop autoboot: 0
> switch to partitions #0, OK
> mmc0 is current device
> Scanning mmc 0:1...
> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
> Scanning disk mmc at ff170000.blk...
> Found 4 disks
> Loading Boot0000 'Fedora' failed
> EFI boot manager: Cannot load any image
> Found EFI removable media binary efi/boot/bootaa64.efi
> 858216 bytes read in 80 ms (10.2 MiB/s)
> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
> Booting /efi\boot\bootaa64.efi
> System BootOrder not found. Initializing defaults.
>
> ethernet at ff0e0000 Waiting for PHY auto negotiation to complete. done
>
>
>
> Fedora (5.12.0-0.rc6.20210407git2d743660786e.185.fc35.aarch64)
> 35 (Rawhide Prerelease)
> UEFI Firmware Settings
>
> ...
>
> Do you know what's the problem here?
> Peter: Have you ever seen this behavior?
The following patch is already queued for my next pull request:
[Patch V2] efi_loader: loosen buffer parameter check in efi_file_read_int
https://patchwork.ozlabs.org/project/uboot/patch/20210428135401.22365-1-peng.fan@oss.nxp.com/
Does it solve you problem?
Best regards
Heinrich
>
> Thanks,
> Michal
>
>
>
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