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ANDROID: kernel: Restrict permissions of /proc/iomem.

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The permissions of /proc/iomem currently are -r--r--r--. Everyone can
see its content. As iomem contains information about the physical memory
content of the device, restrict the information only to root.

Change-Id: If0be35c3fac5274151bea87b738a48e6ec0ae891
CRs-Fixed: 786116
Signed-off-by: Biswajit Paul <biswajitpaul@codeaurora.org>
Signed-off-by: Avijit Kanti Das <avijitnsec@codeaurora.org>
(cherry picked from https://android.googlesource.com/kernel/msm
 commit 3b1ac3a37ce5e6c31c82ca85604705575cb570d6)
Signed-off-by: Tao Huang <huangtao@rock-chips.com>
This commit is contained in:
Biswajit Paul
2015-02-09 15:21:12 -08:00
committed by Tao Huang
parent bd67d49f2b
commit 9c23eefd23
1 changed files with 1 additions and 1 deletions
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2
kernel/resource.c
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@@ -139,7 +139,7 @@ static int __init ioresources_init(void)
{
proc_create_seq_data("ioports", 0, NULL, &resource_op,
&ioport_resource);
proc_create_seq_data("iomem", 0, NULL, &resource_op, &iomem_resource);
proc_create_seq_data("iomem", 0400, NULL, &resource_op, &iomem_resource);
return 0;
}
__initcall(ioresources_init);