[PATCH v3 1/2] vfs: Define new syscall getumask.
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STALE3839d
From: Richard W.M. Jones <hidden>
Date: 2016-04-13 13:58:21
Also in:
lkml
Subsystem:
abi/api, generic include/asm header files, the rest · Maintainers:
Arnd Bergmann, Linus Torvalds
Revision v3 of 3 in this series.
Revisions (3)
- v1 [diff vs current]
- v2 [diff vs current]
- v3 current
Define a system call for reading the current umask value. Signed-off-by: Richard W.M. Jones <redacted> --- include/linux/syscalls.h | 1 + include/uapi/asm-generic/unistd.h | 4 +++- kernel/sys.c | 5 +++++ 3 files changed, 9 insertions(+), 1 deletion(-)
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/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index 2622b33..e59e880 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h@@ -717,9 +717,11 @@ __SYSCALL(__NR_membarrier, sys_membarrier) __SYSCALL(__NR_mlock2, sys_mlock2) #define __NR_copy_file_range 285 __SYSCALL(__NR_copy_file_range, sys_copy_file_range) +#define __NR_getumask 286 +__SYSCALL(__NR_getumask, sys_getumask) #undef __NR_syscalls -#define __NR_syscalls 286 +#define __NR_syscalls 287 /* * All syscalls below here should go away really,
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;
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2.7.4