From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mx.groups.io with SMTP id smtpd.web10.22507.1608459355052273696 for ; Sun, 20 Dec 2020 02:15:55 -0800 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: arm.com, ip: 217.140.110.172, mailfrom: ard.biesheuvel@arm.com) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AA43D101E; Sun, 20 Dec 2020 02:15:53 -0800 (PST) Received: from [192.168.1.81] (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id DD8973F66E; Sun, 20 Dec 2020 02:15:51 -0800 (PST) To: Laszlo Ersek , devel@edk2.groups.io, virtio-fs@redhat.com Cc: Jordan Justen , Leif Lindholm , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= References: <20201216211125.19496-1-lersek@redhat.com> <5f75d127-a110-f256-19ad-4aa120332d6c@redhat.com> From: "Ard Biesheuvel" Autocrypt: addr=ard.biesheuvel@arm.com; keydata= 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K2pHRU9rUjN4ck80Qy9OK1hPRGVKRmlQClNCalpOR1VEL2tEdFBPTDNjUVR4dFhOV0JXT2hv Vjh5SE1abTlhWTNSNE9oR1BDNU5vZ0V1Q3JZeFN3UXZYZ0IKdHptQmxTZlc5UGtiWTZvY3dO UVRDdk5URjU4NUd1YlJvWFNwWDV1ODZZeUEySjRlSjBhUHhjSUJpcnBTWDQ0MQpUSzZtOEgx d0Zxaz0KPXpEZFAKLS0tLS1FTkQgUEdQIFBVQkxJQyBLRVkgQkxPQ0stLS0tLQo= Subject: Re: [edk2 PATCH 00/48] ArmVirtPkg, OvmfPkg: virtio filesystem driver Message-ID: <7d1d4694-8fe2-7a63-7679-a6c0a0287113@arm.com> Date: Sun, 20 Dec 2020 11:15:45 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <5f75d127-a110-f256-19ad-4aa120332d6c@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 12/20/20 1:09 AM, Laszlo Ersek wrote: > On 12/18/20 18:44, Ard Biesheuvel wrote: >> On 12/16/20 10:10 PM, Laszlo Ersek wrote: >>> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3D3097 >>> Repo: https://pagure.io/lersek/edk2.git >>> Branch: virtio-fs (@ b8fd76d649d2) >>> >>> The first commit and the bugzilla ticket state the use case. >>> >>> References, including setup instructions: >>> - https://libvirt.org/kbase/virtiofs.html >>> - https://virtio-fs.gitlab.io/ >>> >>> Useful UEFI shell commands for testing: output redirections, attrib, >>> connect, cp, disconnect, edit, eficompress, efidecompress, hexedit, l= s, >>> map, mkdir, mv, rm, setsize, timezone, touch, type, vol. >>> >>> The series is largely structured as follows: >>> - helper functions and FUSE command wrappers are implemented as requi= red >>> by the next EFI_FILE_PROTOCOL interface, >>> - said EFI_FILE_PROTOCOL interface is implemented, >>> - lather, rinse, repeat. >>> >>> Cc: Ard Biesheuvel >>> Cc: Jordan Justen >>> Cc: Leif Lindholm >>> Cc: Philippe Mathieu-Daud=C3=A9 >>> >>> Thanks, >>> Laszlo >>> >>> Laszlo Ersek (48): >>> OvmfPkg: introduce VirtioFsDxe >>> ArmVirtPkg: include VirtioFsDxe in the ArmVirtQemu* platforms >>> OvmfPkg/VirtioFsDxe: DriverBinding: open VirtioDevice, install >>> SimpleFs >>> OvmfPkg/VirtioFsDxe: implement virtio device (un)initialization >>> OvmfPkg/VirtioFsDxe: add a scatter-gather list data type >>> OvmfPkg/VirtioFsDxe: introduce the basic FUSE request/response head= ers >>> OvmfPkg/VirtioFsDxe: map "errno" values to EFI_STATUS >>> OvmfPkg/VirtioFsDxe: submit the FUSE_INIT request to the device >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_OPENDI= R >>> OvmfPkg/VirtioFsDxe: add shared wrapper for FUSE_RELEASE / >>> FUSE_RELEASEDIR >>> OvmfPkg/VirtioFsDxe: implement >>> EFI_SIMPLE_FILE_SYSTEM_PROTOCOL.OpenVolume() >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_FORGET >>> OvmfPkg/VirtioFsDxe: add a shared wrapper for FUSE_FSYNC / >>> FUSE_FSYNCDIR >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_FLUSH >>> OvmfPkg/VirtioFsDxe: flush, sync, release and forget in Close() / >>> Delete() >>> OvmfPkg/VirtioFsDxe: add helper for appending and sanitizing paths >>> OvmfPkg/VirtioFsDxe: manage path lifecycle in OpenVolume, Close, >>> Delete >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_OPEN >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_MKDIR >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_CREATE >>> OvmfPkg/VirtioFsDxe: convert FUSE inode attributes to EFI_FILE_INFO >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_LOOKUP >>> OvmfPkg/VirtioFsDxe: split canon. path into last parent + last >>> component >>> OvmfPkg/VirtioFsDxe: add a shared wrapper for FUSE_UNLINK / FUSE_RM= DIR >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_GETATT= R >>> OvmfPkg/VirtioFsDxe: implement EFI_FILE_PROTOCOL.Open() >>> OvmfPkg/VirtioFsDxe: erase the dir. entry in >>> EFI_FILE_PROTOCOL.Delete() >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_STATFS >>> OvmfPkg/VirtioFsDxe: add helper for formatting UEFI basenames >>> OvmfPkg/VirtioFsDxe: implement EFI_FILE_PROTOCOL.GetInfo() >>> OvmfPkg/VirtioFsDxe: implement EFI_FILE_PROTOCOL.GetPosition, >>> .SetPosition >>> OvmfPkg/VirtioFsDxe: add a shared wrapper for FUSE_READ / >>> FUSE_READDIRPLUS >>> OvmfPkg/VirtioFsDxe: implement EFI_FILE_PROTOCOL.Read() for regular >>> files >>> OvmfPkg/VirtioFsDxe: convert FUSE dirent filename to EFI_FILE_INFO >>> OvmfPkg/VirtioFsDxe: add EFI_FILE_INFO cache fields to VIRTIO_FS_FI= LE >>> OvmfPkg/VirtioFsDxe: implement EFI_FILE_PROTOCOL.Read() for >>> directories >>> OvmfPkg/VirtioFsDxe: implement EFI_FILE_PROTOCOL.Flush() >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_WRITE >>> OvmfPkg/VirtioFsDxe: implement EFI_FILE_PROTOCOL.Write() >>> OvmfPkg/VirtioFsDxe: handle the volume label in >>> EFI_FILE_PROTOCOL.SetInfo >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_RENAME= 2 >>> OvmfPkg/VirtioFsDxe: add helper for composing rename/move destinati= on >>> path >>> OvmfPkg/VirtioFsDxe: handle file rename/move in >>> EFI_FILE_PROTOCOL.SetInfo >>> OvmfPkg/VirtioFsDxe: implement the wrapper function for FUSE_SETATT= R >>> OvmfPkg/VirtioFsDxe: add helper for determining file size update >>> OvmfPkg/VirtioFsDxe: add helper for determining access time updates >>> OvmfPkg/VirtioFsDxe: add helper for determining file mode bits upda= te >>> OvmfPkg/VirtioFsDxe: handle attribute updates in >>> EFI_FILE_PROTOCOL.SetInfo >>> >> >> This looks carefully crafted, and modulo my two questions, I won't be >> able to spend more time on this than I have going through these >> patches today. >> >> So please feel free to merge this whenever you feel it's ready. >> >> For the series, >> >> Acked-by: Ard Biesheuvel >=20 > Thank you. >=20 > Before I posted the series, I tested it very thoroughly, including buil= d > tests (at every patch, and a Local CI run as well). I created a test > plan and went through it meticulously (it took hours). >=20 > The only thing I couldn't test that way was (obviously) building on > Windows. So clearly now that I've tried merging the series at > , that's what fails. > Because, this is the first time that EmbeddedPkg/TimeBaseLib is seen by > the Visual Studio compiler, and Visual Studio complains: >=20 >> ERROR - Compiler #2220 from >> d:\a\1\s\EmbeddedPkg\Library\TimeBaseLib\TimeBaseLib.c(111): the >> following warning is treated as an error >> WARNING - Compiler #4244 from >> d:\a\1\s\EmbeddedPkg\Library\TimeBaseLib\TimeBaseLib.c(111): '=3D': >> conversion from 'UINTN' to 'UINT32', possible loss of data >=20 > It happens to be correct: >=20 > 99 /** > 100 Converts EFI_TIME to Epoch seconds (elapsed since 1970 JANUAR= Y 01, 00:00:00 UTC) > 101 **/ > 102 UINT32 > 103 EFIAPI > 104 EfiTimeToEpoch ( > 105 IN EFI_TIME *Time > 106 ) > 107 { > 108 UINT32 EpochDays; // Number of days elapsed since EPOCH_JUL= IAN_DAY > 109 UINT32 EpochSeconds; > 110 > 111 EpochDays =3D EfiGetEpochDays (Time); > 112 > 113 EpochSeconds =3D (EpochDays * SEC_PER_DAY) + ((UINTN)Time->Ho= ur * SEC_PER_HOUR) + (Time->Minute * SEC_PER_MIN) + Time->Second; > 114 > 115 return EpochSeconds; > 116 } >=20 > This was discussed on the list earlier, when the function was duplicate= d > for the HTTP dynamic command: >=20 > - https://edk2.groups.io/g/devel/message/64933 > - https://edk2.groups.io/g/devel/message/65186 >=20 > Compare EfiTimeToEpoch() in > "ShellPkg/DynamicCommand/HttpDynamicCommand/Http.c". >=20 > 430 STATIC > 431 UINTN > 432 EFIAPI > 433 EfiTimeToEpoch ( > 434 IN EFI_TIME *Time > 435 ) > 436 { > 437 // > 438 // Number of days elapsed since EPOCH_JULIAN_DAY. > 439 // > 440 UINTN EpochDays; > 441 UINTN EpochSeconds; > 442 > 443 EpochDays =3D EfiGetEpochDays (Time); > 444 > 445 EpochSeconds =3D (EpochDays * SEC_PER_DAY) + > 446 ((UINTN)Time->Hour * SEC_PER_HOUR) + > 447 (Time->Minute * SEC_PER_MIN) + Time->Second; > 448 > 449 return EpochSeconds; > 450 } >=20 > So, in order to merge this series, I'll first have to fix > EfiTimeToEpoch() in EmbeddedPkg :( >=20 > I wish the fixed version in > "ShellPkg/DynamicCommand/HttpDynamicCommand/Http.c" had been contribute= d > back to EmbeddedPkg. >=20 > Anyway, that is for 2021. >=20 > Thank you for checking the series so quickly; I know it's a lot! > Laszlo >=20 Thanks for clearing up the outstanding questions. For the EmbeddedPkg change from UINT32 to UINTN Acked-by: Ard Biesheuvel although I suppose you will have to preserve the prototype, so adding a (UINT32) cast to line 111 is probably the best approach here. --=20 Ard.