Date: Fri, 11 Feb 2005 16:25:24 +0200 From: Alexey Zelkin <phantom@FreeBSD.org.ua> To: Maxim Sobolev <sobomax@FreeBSD.org>, jeffr@FreeBSD.org Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/kern kern_prot.c Message-ID: <20050211142524.GA83735@phantom.cris.net> In-Reply-To: <200502111402.j1BE2gFE084807@repoman.freebsd.org> References: <200502111402.j1BE2gFE084807@repoman.freebsd.org>
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hi, It reminds me one more issue with SIGTHR. It was added to signal.h, but NSIG was not bumped and it was not registered in libc/gen/siglist.c. On Fri, Feb 11, 2005 at 02:02:42PM +0000, Maxim Sobolev wrote: > sobomax 2005-02-11 14:02:42 UTC > > FreeBSD src repository > > Modified files: > sys/kern kern_prot.c > Log: > Add SIGTHR (32) into list of signals permitted to be delivered to the > suid application. The problem is that Linux applications using old Linux > threads (pre-NPTL) use signal 32 (linux SIGRTMIN) for communication between > thread-processes. If such an linux application is installed suid or sgid > and security.bsd.conservative_signals=1 (default), then permission will be > denied to send such a signal and the application will freeze. > > I believe the same will be true for native applications that use libthr, > since libthr uses SIGTHR for implementing conditional variables. > > PR: 72922 > Submitted by: Andriy Gapon <avg@icyb.net.ua> > MFC after: 2 weeks > > Revision Changes Path > 1.192 +1 -0 src/sys/kern/kern_prot.c -- /* Alexey Zelkin && Independent Contractor */ /* phantom(at)FreeBSD.org && http://www.FreeBSD.org/java */ /* phantom(at)cris.net && http://www.FreeBSD.org.ua/ */
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