From: Eric W. Biederman <ebiederm@xmission.com>
Date: Sat, 17 Nov 2012 06:12:28 +0000 (-0800)
Subject: userns: On mips modify check_same_owner to use uid_eq
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=dd34ad35c32bb3d16789d8d4084aead7e68a7b09;p=linux-beck.git

userns: On mips modify check_same_owner to use uid_eq

The kbuild test robot <fengguang.wu@intel.com> report the following error
when building mips with user namespace support enabled.

All error/warnings:
arch/mips/kernel/mips-mt-fpaff.c: In function 'check_same_owner':
arch/mips/kernel/mips-mt-fpaff.c:53:22: error: invalid operands to binary == (have 'kuid_t' and 'kuid_t')
arch/mips/kernel/mips-mt-fpaff.c:54:15: error: invalid operands to binary == (have 'kuid_t' and 'kuid_t')

Replace "a == b" with uid_eq(a, b) removes this error and allows the
code to work with user namespaces enabled.

Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---

diff --git a/arch/mips/kernel/mips-mt-fpaff.c b/arch/mips/kernel/mips-mt-fpaff.c
index 33f63bab478a..fd814e08c945 100644
--- a/arch/mips/kernel/mips-mt-fpaff.c
+++ b/arch/mips/kernel/mips-mt-fpaff.c
@@ -50,8 +50,8 @@ static bool check_same_owner(struct task_struct *p)
 
 	rcu_read_lock();
 	pcred = __task_cred(p);
-	match = (cred->euid == pcred->euid ||
-		 cred->euid == pcred->uid);
+	match = (uid_eq(cred->euid, pcred->euid) ||
+		 uid_eq(cred->euid, pcred->uid));
 	rcu_read_unlock();
 	return match;
 }