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| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-02-18 15:40:40 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-04-23 10:51:05 -0400 |
| commit | daa98831dddc80c52e70b31921dffe493ced22b5 (patch) | |
| tree | f63166c94633798a5bbbee0806279d6857603e96 | |
| parent | 8f3d9f354286745c751374f5f1fcafee6b3f3136 (diff) | |
| download | linux-daa98831dddc80c52e70b31921dffe493ced22b5.tar.gz linux-daa98831dddc80c52e70b31921dffe493ced22b5.tar.bz2 linux-daa98831dddc80c52e70b31921dffe493ced22b5.zip | |
firewire: switch ioctl_queue_iso to use of copy_from_user()
no point trying to do access_ok() for all those __copy_from_user()
at once.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | drivers/firewire/core-cdev.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index 6e291d8f3a27..c7ea4f2d5ca6 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -1081,8 +1081,6 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg) return -EINVAL; p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(a->packets); - if (!access_ok(p, a->size)) - return -EFAULT; end = (void __user *)p + a->size; count = 0; @@ -1120,7 +1118,7 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg) &p->header[transmit_header_bytes / 4]; if (next > end) return -EINVAL; - if (__copy_from_user + if (copy_from_user (u.packet.header, p->header, transmit_header_bytes)) return -EFAULT; if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT && |