[PATCH 094/437] lockdown: convert to read/write iterators

Jens Axboe
2024-04-11T15:34:23Z

security/lockdown/lockdown.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c
index cd84d8ea1dfb..ea208d3251e6 100644
--- a/security/lockdown/lockdown.c
+++ b/security/lockdown/lockdown.c
@@ -93,8 +93,7 @@ static int __init lockdown_lsm_init(void)
return 0;
}

-static ssize_t lockdown_read(struct file *filp, char __user *buf, size_t count,
- loff_t *ppos)
+static ssize_t lockdown_read(struct kiocb *iocb, struct iov_iter *to)
{
char temp[80];
int i, offset = 0;
@@ -116,7 +115,7 @@ static ssize_t lockdown_read(struct file *filp, char __user *buf, size_t count,
if (offset > 0)
temp[offset-1] = '\n';

- return simple_read_from_buffer(buf, count, ppos, temp, strlen(temp));
+ return simple_copy_to_iter(temp, &iocb->ki_pos, strlen(temp), to);
}

static ssize_t lockdown_write(struct file *file, const char __user *buf,
@@ -146,10 +145,11 @@ static ssize_t lockdown_write(struct file *file, const char __user *buf,
kfree(state);
return err ? err : n;
}
+FOPS_WRITE_ITER_HELPER(lockdown_write);

static const struct file_operations lockdown_ops = {
- .read = lockdown_read,
- .write = lockdown_write,
+ .read_iter = lockdown_read,
+ .write_iter = lockdown_write_iter,
};

static int __init lockdown_secfs_init(void)
--
2.43.0