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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> From: Cyrill Gorcunov <gorcunov@gmail.com>
Date: Mon, 21 Nov 2011 16:27:49 +0400 Date: Tue, 22 Nov 2011 21:08:43 +0400
Subject: [PATCH 7/7] prctl: Add PR_ codes to restore vDSO and tune up Subject: [PATCH] prctl: Add PR_ codes to restore vDSO and tune up mm_struct
mm_struct entires entires
To be able to use vDSO facility at process restore time we need it 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 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 +++++++++++++++++++++++++++ arch/x86/vdso/vma.c | 39 +++++++++++++++++++++++++++
include/linux/prctl.h | 18 ++++++++++++ include/linux/prctl.h | 18 ++++++++++++
kernel/sys.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++ kernel/sys.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 127 insertions(+), 0 deletions(-) 3 files changed, 128 insertions(+), 0 deletions(-)
diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c
index 153407c..e0f03da 100644 index 153407c..e0f03da 100644
@@ -100,7 +100,7 @@ index a3baeb2..dddacb0 100644
+ +
#endif /* _LINUX_PRCTL_H */ #endif /* _LINUX_PRCTL_H */
diff --git a/kernel/sys.c b/kernel/sys.c diff --git a/kernel/sys.c b/kernel/sys.c
index 481611f..76a8173 100644 index 481611f..96ee568 100644
--- a/kernel/sys.c --- a/kernel/sys.c
+++ b/kernel/sys.c +++ b/kernel/sys.c
@@ -123,6 +123,12 @@ EXPORT_SYMBOL(cad_pid); @@ -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, * Returns true if current's euid is same as p's uid or euid,
* or has CAP_SYS_NICE to p's user_ns. * 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 else
error = PR_MCE_KILL_DEFAULT; error = PR_MCE_KILL_DEFAULT;
break; break;
@@ -153,6 +153,7 @@ index 481611f..76a8173 100644
+ if (!vma) + if (!vma)
+ goto out; + goto out;
+ +
+ error = 0;
+ switch (arg2) { + switch (arg2) {
+ case PR_SET_MM_START_CODE: + case PR_SET_MM_START_CODE:
+ current->mm->start_code = arg3; + current->mm->start_code = arg3;