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Illumos 5515 - dataset user hold doesn't reject empty tags 

5515 dataset user hold doesn't reject empty tags
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Approved by: Matthew Ahrens <mahrens@delphix.com>

References:
  https://www.illumos.org/issues/5515
  https://github.com/illumos/illumos-gate/commit/752fd8d

Ported-by: kernelOfTruth kerneloftruth@gmail.com
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Josef 'Jeff' Sipek 2016-01-09 18:37:15 +01:00 committed by Brian Behlendorf
parent a6fb32b85a
commit fc581e0507
1 changed files with 15 additions and 2 deletions
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17
module/zfs/zfs_ioctl.c
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@ -24,12 +24,11 @@
* Portions Copyright 2011 Martin Matuska
* Portions Copyright 2012 Pawel Jakub Dawidek <pawel@dawidek.net>
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright 2015 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2014, Joyent, Inc. All rights reserved.
* Copyright (c) 2011, 2014 by Delphix. All rights reserved.
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
* Copyright (c) 2013 Steven Hartland. All rights reserved.
* Copyright (c) 2014, Nexenta Systems, Inc. All rights reserved.
*/
/*
@ -4900,6 +4899,7 @@ zfs_ioc_smb_acl(zfs_cmd_t *zc)
static int
zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist)
{
nvpair_t *pair;
nvlist_t *holds;
int cleanup_fd = -1;
int error;
@ -4909,6 +4909,19 @@ zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist)
if (error != 0)
return (SET_ERROR(EINVAL));
/* make sure the user didn't pass us any invalid (empty) tags */
for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
pair = nvlist_next_nvpair(holds, pair)) {
char *htag;
error = nvpair_value_string(pair, &htag);
if (error != 0)
return (SET_ERROR(error));
if (strlen(htag) == 0)
return (SET_ERROR(EINVAL));
}
if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) {
error = zfs_onexit_fd_hold(cleanup_fd, &minor);
if (error != 0)