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NetLabel: Allow passing the LSM domain as a shared pointer

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Smack doesn't have the need to create a private copy of the LSM "domain" when
setting NetLabel security attributes like SELinux, however, the current
NetLabel code requires a private copy of the LSM "domain".  This patches fixes
that by letting the LSM determine how it wants to pass the domain value.

 * NETLBL_SECATTR_DOMAIN_CPY
   The current behavior, NetLabel assumes that the domain value is a copy and
   frees it when done

 * NETLBL_SECATTR_DOMAIN
   New, Smack-friendly behavior, NetLabel assumes that the domain value is a
   reference to a string managed by the LSM and does not free it when done

Signed-off-by: Paul Moore <[email protected]>
Acked-by: James Morris <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Paul Moore 2008-04-12 19:06:42 -07:00 • committed by David S. Miller
commit 00447872a6
3 changed files with 12 additions and 6 deletions
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2
security/selinux/ss/services.c
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@ -2649,7 +2649,7 @@ int security_netlbl_sid_to_secattr(u32 sid, struct netlbl_lsm_secattr *secattr)
goto netlbl_sid_to_secattr_failure;
secattr->domain = kstrdup(policydb.p_type_val_to_name[ctx->type - 1],
GFP_ATOMIC);
secattr->flags |= NETLBL_SECATTR_DOMAIN;
secattr->flags |= NETLBL_SECATTR_DOMAIN_CPY;
mls_export_netlbl_lvl(ctx, secattr);
rc = mls_export_netlbl_cat(ctx, secattr);
if (rc != 0)