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kernel: Update PR_ patch

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It happened to not flush error code even if
syscall successed. Fixed.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
This commit is contained in:
Cyrill Gorcunov
2011-11-22 21:13:08 +04:00
parent 5aa22f131b
commit d3a30d6bb7
1 changed files with 9 additions and 8 deletions
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17
kernel/0007-prctl-Add-PR_-codes-to-restore-vDSO-and-tune-up-mm_s.patch
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@@ -1,8 +1,8 @@
From ce70ea1a87d978c96f96d61d59c1779df51a4c57 Mon Sep 17 00:00:00 2001
From 4aca2c63c7df7b19864939d543b478b100d568f6 Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@gmail.com>
Date: Mon, 21 Nov 2011 16:27:49 +0400
Subject: [PATCH 7/7] prctl: Add PR_ codes to restore vDSO and tune up
mm_struct entires
Date: Tue, 22 Nov 2011 21:08:43 +0400
Subject: [PATCH] prctl: Add PR_ codes to restore vDSO and tune up mm_struct
entires
To be able to use vDSO facility at process restore time we need it
being mapped at predefined address (at the address it had at checkpoint
@@ -19,8 +19,8 @@ Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
---
arch/x86/vdso/vma.c | 39 +++++++++++++++++++++++++++
include/linux/prctl.h | 18 ++++++++++++
kernel/sys.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 127 insertions(+), 0 deletions(-)
kernel/sys.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 128 insertions(+), 0 deletions(-)
diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c
index 153407c..e0f03da 100644
@@ -100,7 +100,7 @@ index a3baeb2..dddacb0 100644
+
#endif /* _LINUX_PRCTL_H */
diff --git a/kernel/sys.c b/kernel/sys.c
index 481611f..76a8173 100644
index 481611f..96ee568 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -123,6 +123,12 @@ EXPORT_SYMBOL(cad_pid);
@@ -116,7 +116,7 @@ index 481611f..76a8173 100644
/*
* Returns true if current's euid is same as p's uid or euid,
* or has CAP_SYS_NICE to p's user_ns.
@@ -1841,6 +1847,70 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
@@ -1841,6 +1847,71 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
else
error = PR_MCE_KILL_DEFAULT;
break;
@@ -153,6 +153,7 @@ index 481611f..76a8173 100644
+ if (!vma)
+ goto out;
+
+ error = 0;
+ switch (arg2) {
+ case PR_SET_MM_START_CODE:
+ current->mm->start_code = arg3;