From: Stephen Wilson <wilsons@start.ca>
Date: Sun, 13 Mar 2011 19:49:24 +0000 (-0400)
Subject: proc: enable writing to /proc/pid/mem
X-Git-Tag: firefly_0821_release~7613^2~1827^2~1
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=198214a7ee50375fa71a65e518341980cfd4b2f0;p=firefly-linux-kernel-4.4.55.git

proc: enable writing to /proc/pid/mem

With recent changes there is no longer a security hazard with writing to
/proc/pid/mem.  Remove the #ifdef.

Signed-off-by: Stephen Wilson <wilsons@start.ca>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/proc/base.c b/fs/proc/base.c
index e34c3c33b2de..bc15df390ec4 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -854,10 +854,6 @@ out_no_task:
 	return ret;
 }
 
-#define mem_write NULL
-
-#ifndef mem_write
-/* This is a security hazard */
 static ssize_t mem_write(struct file * file, const char __user *buf,
 			 size_t count, loff_t *ppos)
 {
@@ -914,7 +910,6 @@ out_task:
 out_no_task:
 	return copied;
 }
-#endif
 
 loff_t mem_lseek(struct file *file, loff_t offset, int orig)
 {