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Don't directly cast unsigned long to void*

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Cast to uintptr_t first for portability on integer to/from pointer
conversion.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Closes #9065
This commit is contained in:
Tomohiro Kusumi 2019-07-26 03:59:20 +09:00 committed by Tony Hutter
parent 65a0b28b42
commit 4f951b183c
1 changed files with 3 additions and 2 deletions
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5
module/zfs/zfs_ioctl.c
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@ -7110,7 +7110,8 @@ zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag);
error = ddi_copyin((void *)(uintptr_t)arg, zc, sizeof (zfs_cmd_t),
flag);
if (error != 0) {
error = SET_ERROR(EFAULT);
goto out;
@ -7269,7 +7270,7 @@ zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
out:
nvlist_free(innvl);
rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag);
rc = ddi_copyout(zc, (void *)(uintptr_t)arg, sizeof (zfs_cmd_t), flag);
if (error == 0 && rc != 0)
error = SET_ERROR(EFAULT);
if (error == 0 && vec->zvec_allow_log) {