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Linuxulator: complete LOCAL_PEERCRED support.
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Authored by dchagin on May 26 2019, 7:06 PM.

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Summary

Cache pid of the remote process in the struct xucred. Do not bump XUCRED_VERSION as struct layout is not changed.

PR: 215202

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dchagin created this revision.May 26 2019, 7:06 PM
dchagin updated this revision to Diff 57920.May 26 2019, 8:50 PM

Also cache client process pid

tijl accepted this revision.May 27 2019, 1:07 PM

I assume you used a union in struct xucred because a pointer has a different size on different architectures? You could use something like this:

pid_t cr_pid;
u_char _cr_unused1[sizeof(void *)-sizeof(pid_t)];

But perhaps that's not really an improvement.

This revision is now accepted and ready to land.May 27 2019, 1:07 PM
In D20415#440959, @tijl wrote:

I assume you used a union in struct xucred because a pointer has a different size on different architectures? You could use something like this:

sure

pid_t cr_pid;
u_char _cr_unused1[sizeof(void *)-sizeof(pid_t)];
But perhaps that's not really an improvement.

my variant is better for static struct xucred initialization
thanks

This revision was automatically updated to reflect the committed changes.