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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 Brian Behlendorf
parent 3475724ea4
commit 9c7da9a95a
4 changed files with 36 additions and 1 deletions
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include/zfs_namecheck.h
+2
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@@ -43,6 +43,8 @@ typedef enum {
NAME_ERR_RESERVED, /* entire name is reserved */
NAME_ERR_DISKLIKE, /* reserved disk name (c[0-9].*) */
NAME_ERR_TOOLONG, /* name is too long */
NAME_ERR_SELF_REF, /* reserved self path name ('.') */
NAME_ERR_PARENT_REF, /* reserved parent path name ('..') */
NAME_ERR_NO_AT, /* permission set is missing '@' */
} namecheck_err_t;