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| author |   Casey Schaufler <casey@schaufler-ca.com> | 2012-06-05 15:28:30 -0700 |
|---|---|---|
| committer | Casey Schaufler <casey@schaufler-ca.com> | 2012-07-13 15:49:23 -0700 |
| commit | 1880eff77e7a7cb46c68fae7cfa33f72f0a6e70e (patch) | |
| tree | fc4b9a2ca7c643a30cbe2260886fdbd969bf2b50 /security/smack/smack.h | |
| parent | Smack: fix smack_new_inode bogosities (diff) | |
| download | linux-dev-1880eff77e7a7cb46c68fae7cfa33f72f0a6e70e.tar.xz linux-dev-1880eff77e7a7cb46c68fae7cfa33f72f0a6e70e.zip | |
Smack: onlycap limits on CAP_MAC_ADMIN
Smack is integrated with the POSIX capabilities scheme,
using the capabilities CAP_MAC_OVERRIDE and CAP_MAC_ADMIN to
determine if a process is allowed to ignore Smack checks or
change Smack related data respectively. Smack provides an
additional restriction that if an onlycap value is set
by writing to /smack/onlycap only tasks with that Smack
label are allowed to use CAP_MAC_OVERRIDE.
This change adds CAP_MAC_ADMIN as a capability that is affected
by the onlycap mechanism.
Targeted for git://git.gitorious.org/smack-next/kernel.git
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Diffstat (limited to 'security/smack/smack.h')
| -rw-r--r-- | security/smack/smack.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/security/smack/smack.h b/security/smack/smack.h index 76feb31eb823..99b36124f712 100644 --- a/security/smack/smack.h +++ b/security/smack/smack.h @@ -283,6 +283,19 @@ static inline char *smk_of_current(void) } /* + * Is the task privileged and allowed to be privileged + * by the onlycap rule. + */ +static inline int smack_privileged(int cap) +{ + if (!capable(cap)) + return 0; + if (smack_onlycap == NULL || smack_onlycap == smk_of_current()) + return 1; + return 0; +} + +/* * logging functions */ #define SMACK_AUDIT_DENIED 0x1 |