[PATCHv3 13/19] kernel: add ksys_personality()
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2018-06-19 15:45:46
Also in:
linux-fsdevel
On Mon, Jun 18, 2018 at 01:03:04PM +0100, Mark Rutland wrote:
quoted hunk ↗ jump to hunk
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 73810808cdf2..14312d334345 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h@@ -80,6 +80,7 @@ union bpf_attr; #include <linux/unistd.h> #include <linux/quota.h> #include <linux/key.h> +#include <linux/personality.h> #include <trace/syscall.h> #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER@@ -1277,4 +1278,14 @@ static inline long ksys_truncate(const char __user *pathname, loff_t length) return do_sys_truncate(pathname, length); } +static inline unsigned int ksys_personality(unsigned int personality) +{ + unsigned int old = current->personality; + + if (personality != 0xffffffff) + set_personality(personality); + + return old; +} + #endif
It looks like this is identical to sys_personality() in kernel/exec_domain.c. Should you call ksys_personality() from there directly (a few lines saved)? -- Catalin