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From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: Marco Felsch <m.felsch@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 16/18] cdev: use cdev::dos_partition_type only if cdev_is_mbr_partitioned
Date: Thu, 1 Jun 2023 07:30:54 +0200	[thread overview]
Message-ID: <0ee97e12-50a5-2e28-69fd-3a42d2ab9868@pengutronix.de> (raw)
In-Reply-To: <20230531185442.5hvjrknlmecbcm32@pengutronix.de>

On 31.05.23 20:54, Marco Felsch wrote:
> On 23-05-31, Ahmad Fatoum wrote:
>> dos_partition_type == 0 can mean that either a partition is not
>> a MBR partition or that it indeed has a partition type of 0x00.
>>
>> In preparation for using that field in a union, explicitly check if we
>> have a MBR partition.
>>
>> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
>> ---
>>  common/blspec.c | 2 +-
>>  fs/fs.c         | 2 +-
>>  2 files changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/common/blspec.c b/common/blspec.c
>> index e95a8dba8d76..8c7970da8915 100644
>> --- a/common/blspec.c
>> +++ b/common/blspec.c
>> @@ -729,7 +729,7 @@ int blspec_scan_device(struct bootentries *bootentries, struct device *dev)
>>  		 * partition with the MBR type id of 0xEA already exists it
>>  		 * should be used as $BOOT
>>  		 */
>> -		if (cdev->dos_partition_type == 0xea) {
>> +		if (cdev_is_mbr_partitioned(cdev->master) && cdev->dos_partition_type == 0xea) {
> 
> Since you already various helpers to drop priv direct access, what
> about:
> 
> 		if (cdev_dos_partition_type(cdev) == 0xea)
> 
> Within the helper you can check for the cdev_is_mbr_partitioned().

We only have a single call site and there'll be a separate series that adds:

if (cdev_is_gpt_partitioned(cdev->master) && guid_equal(&partcdev->typeuuid, blspec_xbootldr_guid))
	/* use that */;

after this line. So I'd rather leave it as is.

Thanks,
Ahmad

> 
> ?
> 
> Regards,
>   Marco
> 
>>  			ret = blspec_scan_cdev(bootentries, cdev);
>>  			if (ret == 0)
>>  				ret = -ENOENT;
>> diff --git a/fs/fs.c b/fs/fs.c
>> index 2d2d327c5fbc..9a92e6e251e5 100644
>> --- a/fs/fs.c
>> +++ b/fs/fs.c
>> @@ -108,7 +108,7 @@ void cdev_print(const struct cdev *cdev)
>>  
>>  	if (cdev->filetype)
>>  		nbytes += printf("Filetype: %s\t", file_type_to_string(cdev->filetype));
>> -	if (cdev->dos_partition_type)
>> +	if (cdev_is_mbr_partitioned(cdev->master))
>>  		nbytes += printf("DOS parttype: 0x%02x\t", cdev->dos_partition_type);
>>  	if (*cdev->partuuid || *cdev->diskuuid)
>>  		nbytes += printf("%sUUID: %s", cdev_is_partition(cdev) ? "PART" : "DISK",
>> -- 
>> 2.39.2
>>
>>
>>
> 

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |




  reply	other threads:[~2023-06-01  5:32 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-31 14:59 [PATCH 00/18] state: allow lookup of barebox state partition by Type GUID Ahmad Fatoum
2023-05-31 14:59 ` [PATCH 01/18] common: partitions: decouple from EFI GUID definition Ahmad Fatoum
2023-05-31 14:59 ` [PATCH 02/18] efi: define efi_guid_t as 32-bit aligned guid_t Ahmad Fatoum
2023-05-31 14:59 ` [PATCH 03/18] cdev: fix for_each_cdev macro Ahmad Fatoum
2023-05-31 15:37   ` Marco Felsch
2023-05-31 14:59 ` [PATCH 04/18] of: partition: support of_partition_ensure_probed on parent device Ahmad Fatoum
2023-05-31 16:30   ` Marco Felsch
2023-06-01  4:48     ` Ahmad Fatoum
2023-05-31 14:59 ` [PATCH 05/18] of: of_path: always call of_partition_ensure_probed before resolving Ahmad Fatoum
2023-05-31 16:34   ` Marco Felsch
2023-06-01  7:00   ` Ulrich Ölmann
2023-05-31 14:59 ` [PATCH 06/18] driver: add new cdev_is_partition helper Ahmad Fatoum
2023-05-31 16:36   ` Marco Felsch
2023-05-31 14:59 ` [PATCH 07/18] commands: stat: remove code duplication for type info Ahmad Fatoum
2023-05-31 16:44   ` Marco Felsch
2023-05-31 14:59 ` [PATCH 08/18] cdev: use more descriptive struct cdev::diskuuid/partuuid Ahmad Fatoum
2023-05-31 16:56   ` Marco Felsch
2023-05-31 14:59 ` [PATCH 09/18] cdev: record whether partition is parsed from OF Ahmad Fatoum
2023-05-31 17:04   ` Marco Felsch
2023-06-06 19:31     ` Ahmad Fatoum
2023-06-01  8:03   ` Ulrich Ölmann
2023-05-31 14:59 ` [PATCH 10/18] cdev: have devfs_add_partition return existing identical partition, not NULL Ahmad Fatoum
2023-05-31 17:23   ` Marco Felsch
2023-06-01  4:56     ` Ahmad Fatoum
2023-06-01  7:32       ` Sascha Hauer
2023-06-01  8:26       ` Marco Felsch
2023-06-01  7:36   ` Sascha Hauer
2023-06-07  8:06     ` Ahmad Fatoum
2023-05-31 14:59 ` [PATCH 11/18] block: parse partition table on block device registration Ahmad Fatoum
2023-05-31 17:25   ` Marco Felsch
2023-06-01  7:42   ` Sascha Hauer
2023-06-01  8:33     ` Marco Felsch
2023-06-06 19:30     ` Ahmad Fatoum
2023-06-01  8:24   ` Ulrich Ölmann
2023-06-01  8:31     ` Ahmad Fatoum
2023-06-01 10:33       ` Ahmad Fatoum
2023-05-31 14:59 ` [PATCH 12/18] common: partitions: record whether disk is GPT or MBR partitioned Ahmad Fatoum
2023-05-31 17:33   ` Marco Felsch
2023-06-01  5:08     ` Ahmad Fatoum
2023-06-01  5:58       ` Ahmad Fatoum
2023-06-01  8:19       ` Marco Felsch
2023-06-01 10:40         ` Ahmad Fatoum
2023-05-31 14:59 ` [PATCH 13/18] block: add cdev_is_block_(device,partition,disk) helpers Ahmad Fatoum
2023-05-31 17:35   ` Marco Felsch
2023-05-31 14:59 ` [PATCH 14/18] of: export new of_cdev_find helper Ahmad Fatoum
2023-05-31 17:41   ` Marco Felsch
2023-06-01  8:41   ` Ulrich Ölmann
2023-05-31 14:59 ` [PATCH 15/18] state: factor device path lookup into helper function Ahmad Fatoum
2023-05-31 17:54   ` Marco Felsch
2023-06-01  5:14     ` Ahmad Fatoum
2023-05-31 14:59 ` [PATCH 16/18] cdev: use cdev::dos_partition_type only if cdev_is_mbr_partitioned Ahmad Fatoum
2023-05-31 18:54   ` Marco Felsch
2023-06-01  5:30     ` Ahmad Fatoum [this message]
2023-05-31 14:59 ` [PATCH 17/18] common: partitions: efi: record type UUID in cdev Ahmad Fatoum
     [not found]   ` <20230531193130.fgmvxm27dh3gbvhh@pengutronix.de>
2023-06-06 19:28     ` Ahmad Fatoum
2023-06-07  8:55       ` Marco Felsch
2023-05-31 14:59 ` [PATCH 18/18] state: allow lookup of barebox state partition by Type GUID Ahmad Fatoum
2023-05-31 20:01   ` Marco Felsch
2023-06-01  5:49     ` Ahmad Fatoum
2023-06-01  8:11       ` Marco Felsch
2023-06-01 10:44         ` Ahmad Fatoum
2023-06-01  8:05   ` Sascha Hauer

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