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Groups > linux.kernel > #1241669

[PATCH] nvmem: core: make default user binary file root-access only

From Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Newsgroups linux.kernel
Subject [PATCH] nvmem: core: make default user binary file root-access only
Date 2015-10-07 18:40 +0200
Message-ID <qgZV0-1TQ-15@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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As required by many providers like at24/at25/mxs-ocotp/qfprom, which would
want to allow root-only to read/write the nvmem content.
So making the defaults to be root-only access which can prevent normal
users from reading the nvmem data.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/nvmem/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 6fd4e5a..4d2e476 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -112,7 +112,7 @@ static ssize_t bin_attr_nvmem_write(struct file *filp, struct kobject *kobj,
 static struct bin_attribute bin_attr_rw_nvmem = {
 	.attr	= {
 		.name	= "nvmem",
-		.mode	= S_IWUSR | S_IRUGO,
+		.mode	= S_IWUSR | S_IRUSR,
 	},
 	.read	= bin_attr_nvmem_read,
 	.write	= bin_attr_nvmem_write,
@@ -136,7 +136,7 @@ static const struct attribute_group *nvmem_rw_dev_groups[] = {
 static struct bin_attribute bin_attr_ro_nvmem = {
 	.attr	= {
 		.name	= "nvmem",
-		.mode	= S_IRUGO,
+		.mode	= S_IRUSR,
 	},
 	.read	= bin_attr_nvmem_read,
 };
-- 
1.9.1

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[PATCH] nvmem: core: make default user binary file root-access only Srinivas Kandagatla <srinivas.kandagatla@linaro.org> - 2015-10-07 18:40 +0200
  Re: [PATCH] nvmem: core: make default user binary file root-access  only Greg KH <gregkh@linuxfoundation.org> - 2015-10-07 19:00 +0200
    Re: [PATCH] nvmem: core: make default user binary file root-access  only Srinivas Kandagatla <srinivas.kandagatla@linaro.org> - 2015-10-07 19:10 +0200
      Re: [PATCH] nvmem: core: make default user binary file root-access  only Greg KH <gregkh@linuxfoundation.org> - 2015-10-07 19:20 +0200
        Re: [PATCH] nvmem: core: make default user binary file root-access  only Srinivas Kandagatla <srinivas.kandagatla@linaro.org> - 2015-10-07 19:30 +0200
          Re: [PATCH] nvmem: core: make default user binary file root-access  only Greg KH <gregkh@linuxfoundation.org> - 2015-10-07 19:40 +0200

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