Subj : pthread_mutex apis and EPERM error
To   : comp.programming.threads
From : Sammy D.
Date : Mon Jan 24 2005 09:58 am

According to the POSIX Standard, many of the pthread_mutexattr_*()
apis may fail with EPERM and the pthread_mutex_init() can also fail
with EPERM. I like to know under what condition these apis can fail
on Solaris with EPERM? One thing for sure that priority boosting
is not allowed for a non-privileged thread, so in that case EPERM
can be returned, is there any other case? Is this true for both the
PRIO_INHERIT and PRIO_PROTECT case? What policies (only
SCHED_FIFO ??) are supported for PRIO_PROTECT under Solaris?
Thanks in advance.

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