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FreeBSD: Replace legacy make_dev() interface usage

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The function make_dev_s() was introduced to replace make_dev() in
FreeBSD 11.0.  It allows further specification of properties and flags
and returns an error code on failure.  Using this we can fail loading
the module more gracefully than a panic in situations such as when a
device named zfs already exists.  We already use it for zvols.

Use make_dev_s() for /dev/zfs.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #13854
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Ryan Moeller 2022-09-08 13:40:18 -04:00 committed by GitHub
parent e27e692bcc
commit 60d995727a
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1 changed files with 10 additions and 3 deletions
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13
module/os/freebsd/zfs/kmod_core.c
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@ -219,9 +219,16 @@ static struct cdevsw zfs_cdevsw = {
int
zfsdev_attach(void)
{
zfsdev = make_dev(&zfs_cdevsw, 0x0, UID_ROOT, GID_OPERATOR, 0666,
ZFS_DRIVER);
return (0);
struct make_dev_args args;
make_dev_args_init(&args);
args.mda_flags = MAKEDEV_CHECKNAME | MAKEDEV_WAITOK;
args.mda_devsw = &zfs_cdevsw;
args.mda_cr = NULL;
args.mda_uid = UID_ROOT;
args.mda_gid = GID_OPERATOR;
args.mda_mode = 0666;
return (make_dev_s(&args, &zfsdev, ZFS_DRIVER));
}
void