Date: Tue, 14 Feb 2006 13:44:13 +0800 From: David Xu <davidxu@freebsd.org> To: Joseph Koshy <joseph.koshy@gmail.com> Cc: Bachilo Dmitry <root@solink.ru>, freebsd-current@freebsd.org Subject: Re: Bad system call (core dumped) Message-ID: <43F16E2D.5010109@freebsd.org> In-Reply-To: <84dead720602132140p1cc2b471h5c25c877b7311791@mail.gmail.com> References: <200602101246.31666.root@solink.ru> <200602141023.35850.root@solink.ru> <84dead720602132054y6d114b1eo8126fca84ac8972a@mail.gmail.com> <200602141058.24366.root@solink.ru> <43F1656A.2050100@freebsd.org> <84dead720602132140p1cc2b471h5c25c877b7311791@mail.gmail.com>
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Joseph Koshy wrote: > bd> 800 xchat CALL ksem_init(0xbfbfd40c,0x1) > bd> 800 xchat RET ksem_init -1 errno 78 Function not implemented > bd> 800 xchat PSIG SIGSYS SIG_DFL > bd> 800 xchat NAMI "xchat.core" > > bd> Like, I have no some "ksem_init" function in my.... kernel or something? > > dx> You should include "options P1003_1B_SEMAPHORES" in kernel config > dx> file, I don't know why such a basic is not in GENERIC. > > sys/conf/NOTES marks it as being 'very experimental'. > > There are three calls to ksem_init() in our library code. Userland code > should be checking for kernel support for features before attempting to > use them. > > -- > FreeBSD Volunteer, http://people.freebsd.org/~jkoshy > > I don't think user code should check it before it can be used, actually, it is being used by thread libraries to implement named semaphore, it is requred by POSIX. David Xu
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