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freebsd-src/lib/libutil
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Olivier Certner af632cc56b setusercontext(): Fix gap when setting a realtime-class priority 
The login.conf's "priority" capability allows to set priorities in the
idle or realtime classes in addition to the classical nice values (-20
to 20), through a natural extension where values greater than 20 put the
processes in the idle class (with priority adjusted within RTP_PRIO_MIN
and RTP_PRIO_MAX, 21 being converted to 0, 22 to 1, etc.) and values
lower than -20 put the process in the realtime class (with priority
adjusted within RTP_PRIO_MIN and RTP_PRIO_MAX, -21 being converted to
RTP_PRIO_MAX (31), -22 to 30, etc.).

Before this fix, in the latter case (realtime class), -21 was converted
to 30, and RTP_PRIO_MAX (31) could never be specified.

While here, change the priority computation for the idle-class case to
be symmetrical and use RTP_PRIO_MIN (in practice, this changes nothing
at all, since RTP_PRIO_MIN is 0; but this is the correct theoretical
formula, which would work as well with other values of RTP_PRIO_MIN).

PR:                     271727
Reviewed by:            imp, kib
MFC after:              2 weeks
Sponsored by:           Kumacom SAS
Differential Revision:  https://reviews.freebsd.org/D40339

(cherry picked from commit bd572be784)
2023-10-16 08:29:46 -04:00
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tests forkpty: Avoid fd leak if fork() fails. 2023-08-17 13:48:42 +00:00
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login_cap.c login_cap.c: Don't set errno to ERANGE on memory allocation failure 2023-10-13 10:13:38 -04:00
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login_class.c setusercontext(): Fix gap when setting a realtime-class priority 2023-10-16 08:29:46 -04:00
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