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Suppress Clang Static Analyzer warning in dsl_dir_rename_sync()

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Clang's static analyzer reports that if we try to rename a root dataset
in `dsl_dir_rename_sync()`, we will have a NULL pointer passed to
strlcpy(). This is impossible because `dsl_dir_rename_check()` will
prevent us from doing this. We add an assertion to silence this warning.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14575
This commit is contained in:
Richard Yao 2023-03-04 22:23:48 -05:00 committed by Brian Behlendorf
parent 17443e0b20
commit 45c446308a
1 changed files with 2 additions and 0 deletions
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module/zfs/dsl_dir.c
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@ -2125,6 +2125,8 @@ dsl_dir_rename_sync(void *arg, dmu_tx_t *tx)
VERIFY0(dsl_dir_hold(dp, ddra->ddra_newname, FTAG, &newparent,
&mynewname));
ASSERT3P(mynewname, !=, NULL);
/* Log this before we change the name. */
spa_history_log_internal_dd(dd, "rename", tx,
"-> %s", ddra->ddra_newname);