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    SubjectRe: [PATCH 22/23] sysctl arm: Remove binary sysctl support
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    ebiederm@xmission.com (Eric W. Biederman) writes:

    > Russell King <rmk+lkml@arm.linux.org.uk> writes:
    >
    >>
    >> NAK. Glibc uses these numeric sysctls to support ioperm emulation on ARM.
    >> Therefore, removal of these numeric sysctls breaks that user interface:
    >>
    >> static int iobase_name[] = { CTL_BUS, BUS_ISA, BUS_ISA_PORT_BASE };
    >> static int ioshift_name[] = { CTL_BUS, BUS_ISA, BUS_ISA_PORT_SHIFT };
    >> if (! sysctl (iobase_name, 3, &io.io_base, &len, NULL, 0)
    >> && ! sysctl (ioshift_name, 3, &io.shift, &len, NULL, 0))
    >> {
    >> io.initdone = 1;
    >> return 0;
    >> }
    >
    > Those still exist in sysctl_binary.c are provided by reading
    > /proc/sys/bus/isa/membase, /proc/sys/bus/isa/portbase, and
    > /proc/sys/bus/isa/portshift.
    >
    > The practical difference is that /proc support now must be compiled
    > in to support sys_sysctl.

    But thanks for the reminder that I need to go into glibc and fix this before
    we disable the sys_sysctl emulation by default.

    Eric


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