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Restrict filesystem creation if name referred either '.' or '..'

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This change restricts filesystem creation if the given name
contains either '.' or '..'

Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Signed-off-by: TulsiJain <tulsi.jain@delphix.com>
Closes #8842
Closes #8564
This commit is contained in:
Tulsi Jain
2019-06-13 08:56:15 -07:00
committed by Tony Hutter
parent 77e64c6fff
commit 19cebf0518
4 changed files with 36 additions and 1 deletions
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lib/libzfs/libzfs_dataset.c
+10
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@@ -197,6 +197,16 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
"reserved disk name"));
break;
case NAME_ERR_SELF_REF:
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"self reference, '.' is found in name"));
break;
case NAME_ERR_PARENT_REF:
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"parent reference, '..' is found in name"));
break;
default:
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"(%d) not defined"), why);