Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9eb3ff40376e505eafb927b4a4cbccc928df68ec
Commit:     9eb3ff40376e505eafb927b4a4cbccc928df68ec
Parent:     07a304603cd0133468e3a153f4fe78b02733d0db
Author:     Ulrich Drepper <[EMAIL PROTECTED]>
AuthorDate: Tue Jul 31 00:38:16 2007 -0700
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue Jul 31 15:39:39 2007 -0700

    CPU online file permission
    
    Is there a reason why the "online" file in the subdirectories for the CPUs
    in /sys/devices/system isn't world-readable?  I cannot imagine it to be
    security relevant especially now that a getcpu() syscall can be used to
    determine what CPUa thread runs on.
    
    The file is useful to correctly implement the sysconf() function to return
    the number of online CPUs.  In the presence of hotplug we currently cannot
    provide this information.  The patch below should to it.
    
    Signed-off-by: Ulrich Drepper <[EMAIL PROTECTED]>
    Cc: <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
 drivers/base/cpu.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index fe7ef33..4054507 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -53,7 +53,7 @@ static ssize_t store_online(struct sys_device *dev, const 
char *buf,
                ret = count;
        return ret;
 }
-static SYSDEV_ATTR(online, 0600, show_online, store_online);
+static SYSDEV_ATTR(online, 0644, show_online, store_online);
 
 static void __devinit register_cpu_control(struct cpu *cpu)
 {
-
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