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authorChunwei Chen <[email protected]>2016-12-09 10:52:08 -0800
committerBrian Behlendorf <[email protected]>2017-02-03 10:25:22 -0800
commitf3da7a1b401883dc5bfc9ba8cc1f1acb0079cfc8 (patch)
tree236311525d7b43d68fcce01131ba41e65d57acef /module/zfs
parent625ee0a5e0121401bc02b312284975a33312809e (diff)
Don't count '@' for dataset namelen if not a snapshot
Don't count '@' for dataset namelen if not a snapshot. This fixes making a pool unimportable when the dataset namelen is 255. Add test file for zfs create name length 255. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes #5432 Closes #5456
Diffstat (limited to 'module/zfs')
-rw-r--r--module/zfs/dsl_dataset.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/module/zfs/dsl_dataset.c b/module/zfs/dsl_dataset.c
index 7124f3d6a..9bbb6fae2 100644
--- a/module/zfs/dsl_dataset.c
+++ b/module/zfs/dsl_dataset.c
@@ -671,7 +671,11 @@ dsl_dataset_namelen(dsl_dataset_t *ds)
int len;
VERIFY0(dsl_dataset_get_snapname(ds));
mutex_enter(&ds->ds_lock);
- len = dsl_dir_namelen(ds->ds_dir) + 1 + strlen(ds->ds_snapname);
+ len = strlen(ds->ds_snapname);
+ /* add '@' if ds is a snap */
+ if (len > 0)
+ len++;
+ len += dsl_dir_namelen(ds->ds_dir);
mutex_exit(&ds->ds_lock);
return (len);
}