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[Qemu-devel] [PATCH 2/2] linux-user: Add support for prctl PR_GET_NAME a
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 2/2] linux-user: Add support for prctl PR_GET_NAME and PR_SET_NAME |
Date: |
Fri, 3 Feb 2012 13:53:06 +0000 |
Add support for the prctl options PR_GET_NAME and PR_SET_NAME,
which take or return a name in a 16 byte buffer pointed to by arg2.
Signed-off-by: Peter Maydell <address@hidden>
---
linux-user/syscall.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 7851fb5..489a8c2 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -6853,6 +6853,30 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
}
break;
}
+#ifdef PR_GET_NAME
+ case PR_GET_NAME:
+ {
+ void *name = lock_user(VERIFY_WRITE, arg2, 16, 1);
+ if (!name) {
+ goto efault;
+ }
+ ret = get_errno(prctl(arg1, (unsigned long)name,
+ arg3, arg4, arg5));
+ unlock_user(name, arg2, 16);
+ break;
+ }
+ case PR_SET_NAME:
+ {
+ void *name = lock_user(VERIFY_READ, arg2, 16, 1);
+ if (!name) {
+ goto efault;
+ }
+ ret = get_errno(prctl(arg1, (unsigned long)name,
+ arg3, arg4, arg5));
+ unlock_user(name, arg2, 0);
+ break;
+ }
+#endif
default:
/* Most prctl options have no pointer arguments */
ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
--
1.7.1