UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

[PATCH] sparc: jsflash __user annotations 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Al Viro 2005-12-06 05:51:43 -05:00 committed by Linus Torvalds
parent b7c690b52f
commit bc05d83bbf
1 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/sbus/char/jsflash.c
View File

@ -249,11 +249,11 @@ static loff_t jsf_lseek(struct file * file, loff_t offset, int orig)
/*
* OS SIMM Cannot be read in other size but a 32bits word.
*/
static ssize_t jsf_read(struct file * file, char * buf,
static ssize_t jsf_read(struct file * file, char __user * buf,
size_t togo, loff_t *ppos)
{
unsigned long p = *ppos;
char *tmp = buf;
char __user *tmp = buf;
union byte4 {
char s[4];
@ -305,7 +305,7 @@ static ssize_t jsf_read(struct file * file, char * buf,
return tmp-buf;
}
static ssize_t jsf_write(struct file * file, const char * buf,
static ssize_t jsf_write(struct file * file, const char __user * buf,
size_t count, loff_t *ppos)
{
return -ENOSPC;
@ -356,10 +356,10 @@ static int jsf_ioctl_erase(unsigned long arg)
* Program a block of flash.
* Very simple because we can do it byte by byte anyway.
*/
static int jsf_ioctl_program(unsigned long arg)
static int jsf_ioctl_program(void __user *arg)
{
struct jsflash_program_arg abuf;
char *uptr;
char __user *uptr;
unsigned long p;
unsigned int togo;
union {
@ -367,13 +367,13 @@ static int jsf_ioctl_program(unsigned long arg)
char s[4];
} b;
if (copy_from_user(&abuf, (char *)arg, JSFPRGSZ))
if (copy_from_user(&abuf, arg, JSFPRGSZ))
return -EFAULT;
p = abuf.off;
togo = abuf.size;
if ((togo & 3) || (p & 3)) return -EINVAL;
uptr = (char *) (unsigned long) abuf.data;
uptr = (char __user *) (unsigned long) abuf.data;
while (togo != 0) {
togo -= 4;
if (copy_from_user(&b.s[0], uptr, 4))
@ -390,19 +390,20 @@ static int jsf_ioctl(struct inode *inode, struct file *f, unsigned int cmd,
unsigned long arg)
{
int error = -ENOTTY;
void __user *argp = (void __user *)arg;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
switch (cmd) {
case JSFLASH_IDENT:
if (copy_to_user((void *)arg, &jsf0.id, JSFIDSZ))
if (copy_to_user(argp, &jsf0.id, JSFIDSZ))
return -EFAULT;
break;
case JSFLASH_ERASE:
error = jsf_ioctl_erase(arg);
break;
case JSFLASH_PROGRAM:
error = jsf_ioctl_program(arg);
error = jsf_ioctl_program(argp);
break;
}