From a0c1127b147dc6a0372b141deb8c0c2b0195b8ea Mon Sep 17 00:00:00 2001 From: Steven Hartland Date: Tue, 6 Aug 2013 09:50:40 -0800 Subject: [PATCH] 3973 zfs_ioc_rename alters passed in zc->zc_name Reviewed by: Matthew Ahrens Reviewed by: George Wilson Approved by: Christopher Siden --- usr/src/uts/common/fs/zfs/zfs_ioctl.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/usr/src/uts/common/fs/zfs/zfs_ioctl.c b/usr/src/uts/common/fs/zfs/zfs_ioctl.c index ec44fe871bae..e8fd90459ea1 100644 --- a/usr/src/uts/common/fs/zfs/zfs_ioctl.c +++ b/usr/src/uts/common/fs/zfs/zfs_ioctl.c @@ -3552,18 +3552,25 @@ zfs_ioc_rename(zfs_cmd_t *zc) at = strchr(zc->zc_name, '@'); if (at != NULL) { /* snaps must be in same fs */ + int error; + if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1)) return (SET_ERROR(EXDEV)); *at = '\0'; if (zc->zc_objset_type == DMU_OST_ZFS) { - int error = dmu_objset_find(zc->zc_name, + error = dmu_objset_find(zc->zc_name, recursive_unmount, at + 1, recursive ? DS_FIND_CHILDREN : 0); - if (error != 0) + if (error != 0) { + *at = '@'; return (error); + } } - return (dsl_dataset_rename_snapshot(zc->zc_name, - at + 1, strchr(zc->zc_value, '@') + 1, recursive)); + error = dsl_dataset_rename_snapshot(zc->zc_name, + at + 1, strchr(zc->zc_value, '@') + 1, recursive); + *at = '@'; + + return (error); } else { if (zc->zc_objset_type == DMU_OST_ZVOL) (void) zvol_remove_minor(zc->zc_name);