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eCryptfs: write lock requested keys

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A requested key is write locked in order to prevent modifications on the
authentication token while it is being used.

Signed-off-by: Roberto Sassu <roberto.sassu@polito.it>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
This commit is contained in:
Roberto Sassu
2011-03-21 16:00:55 +01:00
committed by Tyler Hicks
parent 950983fc04
commit b5695d0463
2 changed files with 23 additions and 7 deletions
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4
fs/ecryptfs/main.c
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@@ -254,8 +254,10 @@ static int ecryptfs_init_global_auth_toks(
"option: [%s]\n", global_auth_tok->sig);
global_auth_tok->flags |= ECRYPTFS_AUTH_TOK_INVALID;
goto out;
} else
} else {
global_auth_tok->flags &= ~ECRYPTFS_AUTH_TOK_INVALID;
up_write(&(global_auth_tok->global_auth_tok_key)->sem);
}
}
out:
return rc;