Messages in this thread | | | Date | Wed, 9 Oct 2002 12:08:19 -0700 | From | Chris Wright <> | Subject | Re: capable()-function |
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* Tony Glader (Tony.Glader@blueberrysolutions.com) wrote: > On Wed, 9 Oct 2002, Chris Wright wrote: > > > > I was investigating problems with PCMCIA and found that > > > capable(CAP_SYS_ADMIN) returns always false in my case. If I'm calling > > Typically root has all effective capabilities (except CAP_SETPCAP). > > You can check your effective capabilities in /proc/[pid]/status. > > In this case capable() call has been made from a kernel module. I think a > module doesn't have a PID? Should I check capabilites of program that does > a ioctl() call that will cause module to do capable() checking?
The userspace task that called the ioctl() is the one to look at.
> Process that does ioctl() call is owned by root and has following > capabilities: > > CapInh: 0000000000000000 > CapPrm: 00000000fffffeff > CapEff: 00000000fffffeff
Ok, I don't think the capable() check is failing. -chris -- Linux Security Modules http://lsm.immunix.org http://lsm.bkbits.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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