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Subject[PATCH v2 1/2] vfs: Define new syscall getumask.
Date
Define a system call for reading the current umask value.

Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
---
include/linux/syscalls.h | 1 +
kernel/sys.c | 5 +++++
2 files changed, 6 insertions(+)

diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index d795472..e96e88f 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -659,6 +659,7 @@ asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
struct rlimit64 __user *old_rlim);
asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
asmlinkage long sys_umask(int mask);
+asmlinkage long sys_getumask(void);

asmlinkage long sys_msgget(key_t key, int msgflg);
asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
diff --git a/kernel/sys.c b/kernel/sys.c
index cf8ba54..9db526c 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1649,6 +1649,11 @@ SYSCALL_DEFINE1(umask, int, mask)
return mask;
}

+SYSCALL_DEFINE0(getumask)
+{
+ return current_umask();
+}
+
static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
{
struct fd exe;
--
2.7.4
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