79e2e116a7
@cem removed references to pdwait4(2) (a nonexistent syscall) in r320058. This change removes references to pdwait4(2) and `CAP_PDWAIT` in rights(4) to not mislead the user into thinking that pdwait4(2)/`CAP_PDWAIT` is actually implemented in the stock FreeBSD kernel. The goal of this functionality was to simplify monitoring/manipulating processes started with `pdfork`, et al, and avoid races with waiting on pids. The syscall was never completed though--just discussed on the capsicum mailing list back in 2015: https://lists.cam.ac.uk/pipermail/cl-capsicum-discuss/2015-May/msg00012.html . That being said, there are members of the project (@rwatson, etc) who have longterm goals to implement this syscall to better secure pdfork(2) calls. PR: 235871 Reviewed by: emaste Discussed with: rwatson Approved by: emaste (mentor) MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D18950 |
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