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Date: Thu, 21 Dec 2023 13:15:24 +0100
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To: Wolfgang Bumiller <w.bumiller@proxmox.com>
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From: Filip Schauer <f.schauer@proxmox.com>
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Subject: Re: [pbs-devel] [PATCH v3 proxmox 2/3] compression: Add support for
symlinks in zip files
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On 21/12/2023 13:03, Wolfgang Bumiller wrote:
> On Thu, Dec 21, 2023 at 12:37:42PM +0100, Filip Schauer wrote:
>> On 20/12/2023 14:20, Wolfgang Bumiller wrote:
>>> With the link of a symlink being encoded in the contents, I wonder if we
>>> should just do the same in the code. Not normally what I'd go for in
>>> rust, but...
>>>
>>> On Thu, Dec 14, 2023 at 03:48:21PM +0100, Filip Schauer wrote:
>>>> Add support for symlinks to ZipEntry. A symlink is encoded by or-ing its
>>>> attributes with S_IFLNK as seen in the kernel in
>>>> include/uapi/linux/stat.h
>>>>
>>>> Signed-off-by: Filip Schauer<f.schauer@proxmox.com>
>>>> ---
>>>> proxmox-compression/src/zip.rs | 32 +++++++++++++++++++++++++-------
>>>> 1 file changed, 25 insertions(+), 7 deletions(-)
>>>>
>>>> diff --git a/proxmox-compression/src/zip.rs b/proxmox-compression/src/zip.rs
>>>> index 069e8bc..a3b2346 100644
>>>> --- a/proxmox-compression/src/zip.rs
>>>> +++ b/proxmox-compression/src/zip.rs
>>>> @@ -74,6 +74,7 @@ fn epoch_to_dos(epoch: i64) -> (u16, u16) {
>>>> pub enum FileType {
>>>> Directory,
>>>> Regular,
>>>> + Symlink(OsString),
>>> ... then this enum could be #[repr(u32)] using the values from the hunk
>>> below as discriminants here directly.
>>> And without the OsString in there this could be all of `Clone + Copy +
>>> Eq + PartialEq`, turning all the `matches!()` in this series into
>>> comparisons with `==`.
>>
>> Do you want to pass the symlink target as an additional argument to
>> add_entry? If so, add_entry would take an enum FileType, an Option
>> content and an Option symlink_target. Depending on the FileType, at
>> least one of the Options would be None. This approach does not seem very
>> clean to me.
> Why would it be a separate parameter? Target == Content.
Never mind then. I misunderstood.