diff options
| author | Matthew Macy <[email protected]> | 2019-12-02 10:08:27 -0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2019-12-02 10:08:27 -0800 |
| commit | 51420321068e905445e625def28fadc7c3625e13 (patch) | |
| tree | e45349eef2df831b142fa97d5e21d86aea8cda4d /module/os/linux | |
| parent | 42a826eed32cd428a3f7c796c619a854c1f8f9dd (diff) | |
Move zfs_cmd_t copyin/copyout to platform code
FreeBSD needs to cope with multiple version of the zfs_cmd_t
structure. Allowing the platform code to pre and post
process the cmd structure makes it possible to work with
legacy tooling.
Reviewed-by: Jorgen Lundman <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Matt Macy <[email protected]>
Closes #9624
Diffstat (limited to 'module/os/linux')
| -rw-r--r-- | module/os/linux/zfs/zfs_ioctl_os.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/module/os/linux/zfs/zfs_ioctl_os.c b/module/os/linux/zfs/zfs_ioctl_os.c index fa47c30ea..2960832a5 100644 --- a/module/os/linux/zfs/zfs_ioctl_os.c +++ b/module/os/linux/zfs/zfs_ioctl_os.c @@ -168,9 +168,25 @@ static long zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg) { uint_t vecnum; + zfs_cmd_t *zc; + int error, rc; vecnum = cmd - ZFS_IOC_FIRST; - return (zfsdev_ioctl_common(vecnum, arg)); + + zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP); + + if (ddi_copyin((void *)(uintptr_t)arg, zc, sizeof (zfs_cmd_t), 0)) { + error = -SET_ERROR(EFAULT); + goto out; + } + error = -zfsdev_ioctl_common(vecnum, zc); + rc = ddi_copyout(zc, (void *)(uintptr_t)arg, sizeof (zfs_cmd_t), 0); + if (error == 0 && rc != 0) + error = -SET_ERROR(EFAULT); +out: + kmem_free(zc, sizeof (zfs_cmd_t)); + return (error); + } int |