diff options
Diffstat (limited to 'fs/binfmt_misc.c')
| -rw-r--r-- | fs/binfmt_misc.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index e6f57990b121..330fd3fe8546 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -18,7 +18,7 @@ #include <linux/module.h> #include <linux/init.h> - +#include <linux/sched.h> #include <linux/binfmts.h> #include <linux/slab.h> #include <linux/ctype.h> @@ -675,19 +675,8 @@ static ssize_t bm_status_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { char *s = enabled ? "enabled" : "disabled"; - int len = strlen(s); - loff_t pos = *ppos; - if (pos < 0) - return -EINVAL; - if (pos >= len) - return 0; - if (len < pos + nbytes) - nbytes = len - pos; - if (copy_to_user(buf, s + pos, nbytes)) - return -EFAULT; - *ppos = pos + nbytes; - return nbytes; + return simple_read_from_buffer(buf, nbytes, ppos, s, strlen(s)); } static ssize_t bm_status_write(struct file * file, const char __user * buffer, @@ -727,8 +716,8 @@ static const struct super_operations s_ops = { static int bm_fill_super(struct super_block * sb, void * data, int silent) { static struct tree_descr bm_files[] = { - [1] = {"status", &bm_status_operations, S_IWUSR|S_IRUGO}, - [2] = {"register", &bm_register_operations, S_IWUSR}, + [2] = {"status", &bm_status_operations, S_IWUSR|S_IRUGO}, + [3] = {"register", &bm_register_operations, S_IWUSR}, /* last one */ {""} }; int err = simple_fill_super(sb, 0x42494e4d, bm_files); |