diff options
Diffstat (limited to 'arch/s390/kernel/compat_linux.c')
| -rw-r--r-- | arch/s390/kernel/compat_linux.c | 43 |
1 files changed, 17 insertions, 26 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c index 22c9e557bb22..73b624ed9cd8 100644 --- a/arch/s390/kernel/compat_linux.c +++ b/arch/s390/kernel/compat_linux.c @@ -29,7 +29,6 @@ #include <linux/sem.h> #include <linux/msg.h> #include <linux/shm.h> -#include <linux/slab.h> #include <linux/uio.h> #include <linux/quota.h> #include <linux/module.h> @@ -52,6 +51,7 @@ #include <linux/ptrace.h> #include <linux/fadvise.h> #include <linux/ipc.h> +#include <linux/slab.h> #include <asm/types.h> #include <asm/uaccess.h> @@ -616,44 +616,35 @@ asmlinkage long sys32_fstatat64(unsigned int dfd, char __user *filename, */ struct mmap_arg_struct_emu31 { - u32 addr; - u32 len; - u32 prot; - u32 flags; - u32 fd; - u32 offset; + compat_ulong_t addr; + compat_ulong_t len; + compat_ulong_t prot; + compat_ulong_t flags; + compat_ulong_t fd; + compat_ulong_t offset; }; -asmlinkage unsigned long -old32_mmap(struct mmap_arg_struct_emu31 __user *arg) +asmlinkage unsigned long old32_mmap(struct mmap_arg_struct_emu31 __user *arg) { struct mmap_arg_struct_emu31 a; - int error = -EFAULT; if (copy_from_user(&a, arg, sizeof(a))) - goto out; - - error = -EINVAL; + return -EFAULT; if (a.offset & ~PAGE_MASK) - goto out; - - error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, - a.offset >> PAGE_SHIFT); -out: - return error; + return -EINVAL; + a.addr = (unsigned long) compat_ptr(a.addr); + return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, + a.offset >> PAGE_SHIFT); } -asmlinkage long -sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg) +asmlinkage long sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg) { struct mmap_arg_struct_emu31 a; - int error = -EFAULT; if (copy_from_user(&a, arg, sizeof(a))) - goto out; - error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset); -out: - return error; + return -EFAULT; + a.addr = (unsigned long) compat_ptr(a.addr); + return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset); } asmlinkage long sys32_read(unsigned int fd, char __user * buf, size_t count) |