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![Alan Cox](/assets/img/avatar_default.png)
Consider the input case of a rule that consists entirely of non space symbols followed by a \0. Say 64 + \0 In this case strlen(data) = 64 kzalloc of subject and object are 64 byte objects sscanfdata, "%s %s %s", subject, ...) will put 65 bytes into subject. Signed-off-by: Alan Cox <alan@linux.intel.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Cc: stable@vger.kernel.org Signed-off-by: James Morris <james.l.morris@oracle.com>
2146 lines
50 KiB
C
2146 lines
50 KiB
C
/*
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* Copyright (C) 2007 Casey Schaufler <casey@schaufler-ca.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2.
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*
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* Authors:
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* Casey Schaufler <casey@schaufler-ca.com>
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* Ahmed S. Darwish <darwish.07@gmail.com>
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*
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* Special thanks to the authors of selinuxfs.
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*
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* Karl MacMillan <kmacmillan@tresys.com>
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* James Morris <jmorris@redhat.com>
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*
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*/
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#include <linux/kernel.h>
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#include <linux/vmalloc.h>
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#include <linux/security.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <net/net_namespace.h>
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#include <net/cipso_ipv4.h>
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#include <linux/seq_file.h>
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#include <linux/ctype.h>
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#include <linux/audit.h>
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#include "smack.h"
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/*
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* smackfs pseudo filesystem.
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*/
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enum smk_inos {
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SMK_ROOT_INO = 2,
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SMK_LOAD = 3, /* load policy */
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SMK_CIPSO = 4, /* load label -> CIPSO mapping */
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SMK_DOI = 5, /* CIPSO DOI */
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SMK_DIRECT = 6, /* CIPSO level indicating direct label */
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SMK_AMBIENT = 7, /* internet ambient label */
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SMK_NETLBLADDR = 8, /* single label hosts */
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SMK_ONLYCAP = 9, /* the only "capable" label */
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SMK_LOGGING = 10, /* logging */
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SMK_LOAD_SELF = 11, /* task specific rules */
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SMK_ACCESSES = 12, /* access policy */
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SMK_MAPPED = 13, /* CIPSO level indicating mapped label */
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SMK_LOAD2 = 14, /* load policy with long labels */
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SMK_LOAD_SELF2 = 15, /* load task specific rules with long labels */
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SMK_ACCESS2 = 16, /* make an access check with long labels */
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SMK_CIPSO2 = 17, /* load long label -> CIPSO mapping */
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};
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/*
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* List locks
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*/
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static DEFINE_MUTEX(smack_list_lock);
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static DEFINE_MUTEX(smack_cipso_lock);
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static DEFINE_MUTEX(smack_ambient_lock);
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static DEFINE_MUTEX(smk_netlbladdr_lock);
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/*
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* This is the "ambient" label for network traffic.
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* If it isn't somehow marked, use this.
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* It can be reset via smackfs/ambient
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*/
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char *smack_net_ambient;
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/*
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* This is the level in a CIPSO header that indicates a
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* smack label is contained directly in the category set.
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* It can be reset via smackfs/direct
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*/
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int smack_cipso_direct = SMACK_CIPSO_DIRECT_DEFAULT;
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/*
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* This is the level in a CIPSO header that indicates a
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* secid is contained directly in the category set.
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* It can be reset via smackfs/mapped
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*/
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int smack_cipso_mapped = SMACK_CIPSO_MAPPED_DEFAULT;
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/*
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* Unless a process is running with this label even
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* having CAP_MAC_OVERRIDE isn't enough to grant
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* privilege to violate MAC policy. If no label is
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* designated (the NULL case) capabilities apply to
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* everyone. It is expected that the hat (^) label
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* will be used if any label is used.
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*/
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char *smack_onlycap;
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/*
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* Certain IP addresses may be designated as single label hosts.
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* Packets are sent there unlabeled, but only from tasks that
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* can write to the specified label.
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*/
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LIST_HEAD(smk_netlbladdr_list);
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/*
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* Rule lists are maintained for each label.
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* This master list is just for reading /smack/load and /smack/load2.
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*/
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struct smack_master_list {
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struct list_head list;
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struct smack_rule *smk_rule;
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};
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LIST_HEAD(smack_rule_list);
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static int smk_cipso_doi_value = SMACK_CIPSO_DOI_DEFAULT;
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const char *smack_cipso_option = SMACK_CIPSO_OPTION;
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/*
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* Values for parsing cipso rules
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* SMK_DIGITLEN: Length of a digit field in a rule.
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* SMK_CIPSOMIN: Minimum possible cipso rule length.
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* SMK_CIPSOMAX: Maximum possible cipso rule length.
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*/
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#define SMK_DIGITLEN 4
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#define SMK_CIPSOMIN (SMK_LABELLEN + 2 * SMK_DIGITLEN)
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#define SMK_CIPSOMAX (SMK_CIPSOMIN + SMACK_CIPSO_MAXCATNUM * SMK_DIGITLEN)
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/*
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* Values for parsing MAC rules
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* SMK_ACCESS: Maximum possible combination of access permissions
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* SMK_ACCESSLEN: Maximum length for a rule access field
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* SMK_LOADLEN: Smack rule length
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*/
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#define SMK_OACCESS "rwxa"
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#define SMK_ACCESS "rwxat"
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#define SMK_OACCESSLEN (sizeof(SMK_OACCESS) - 1)
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#define SMK_ACCESSLEN (sizeof(SMK_ACCESS) - 1)
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#define SMK_OLOADLEN (SMK_LABELLEN + SMK_LABELLEN + SMK_OACCESSLEN)
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#define SMK_LOADLEN (SMK_LABELLEN + SMK_LABELLEN + SMK_ACCESSLEN)
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/*
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* Stricly for CIPSO level manipulation.
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* Set the category bit number in a smack label sized buffer.
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*/
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static inline void smack_catset_bit(unsigned int cat, char *catsetp)
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{
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if (cat == 0 || cat > (SMK_CIPSOLEN * 8))
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return;
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catsetp[(cat - 1) / 8] |= 0x80 >> ((cat - 1) % 8);
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}
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/**
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* smk_netlabel_audit_set - fill a netlbl_audit struct
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* @nap: structure to fill
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*/
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static void smk_netlabel_audit_set(struct netlbl_audit *nap)
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{
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nap->loginuid = audit_get_loginuid(current);
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nap->sessionid = audit_get_sessionid(current);
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nap->secid = smack_to_secid(smk_of_current());
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}
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/*
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* Value for parsing single label host rules
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* "1.2.3.4 X"
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*/
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#define SMK_NETLBLADDRMIN 9
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/**
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* smk_set_access - add a rule to the rule list
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* @srp: the new rule to add
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* @rule_list: the list of rules
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* @rule_lock: the rule list lock
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*
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* Looks through the current subject/object/access list for
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* the subject/object pair and replaces the access that was
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* there. If the pair isn't found add it with the specified
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* access.
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*
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* Returns 1 if a rule was found to exist already, 0 if it is new
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* Returns 0 if nothing goes wrong or -ENOMEM if it fails
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* during the allocation of the new pair to add.
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*/
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static int smk_set_access(struct smack_rule *srp, struct list_head *rule_list,
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struct mutex *rule_lock)
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{
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struct smack_rule *sp;
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int found = 0;
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mutex_lock(rule_lock);
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/*
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* Because the object label is less likely to match
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* than the subject label check it first
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*/
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list_for_each_entry_rcu(sp, rule_list, list) {
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if (sp->smk_object == srp->smk_object &&
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sp->smk_subject == srp->smk_subject) {
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found = 1;
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sp->smk_access = srp->smk_access;
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break;
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}
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}
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if (found == 0)
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list_add_rcu(&srp->list, rule_list);
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mutex_unlock(rule_lock);
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return found;
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}
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/**
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* smk_fill_rule - Fill Smack rule from strings
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* @subject: subject label string
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* @object: object label string
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* @access: access string
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* @rule: Smack rule
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* @import: if non-zero, import labels
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* @len: label length limit
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*
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* Returns 0 on success, -1 on failure
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*/
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static int smk_fill_rule(const char *subject, const char *object,
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const char *access, struct smack_rule *rule,
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int import, int len)
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{
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const char *cp;
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struct smack_known *skp;
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if (import) {
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rule->smk_subject = smk_import(subject, len);
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if (rule->smk_subject == NULL)
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return -1;
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rule->smk_object = smk_import(object, len);
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if (rule->smk_object == NULL)
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return -1;
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} else {
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cp = smk_parse_smack(subject, len);
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if (cp == NULL)
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return -1;
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skp = smk_find_entry(cp);
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kfree(cp);
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if (skp == NULL)
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return -1;
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rule->smk_subject = skp->smk_known;
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cp = smk_parse_smack(object, len);
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if (cp == NULL)
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return -1;
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skp = smk_find_entry(cp);
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kfree(cp);
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if (skp == NULL)
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return -1;
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rule->smk_object = skp->smk_known;
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}
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rule->smk_access = 0;
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for (cp = access; *cp != '\0'; cp++) {
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switch (*cp) {
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case '-':
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break;
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case 'r':
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case 'R':
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rule->smk_access |= MAY_READ;
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break;
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case 'w':
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case 'W':
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rule->smk_access |= MAY_WRITE;
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break;
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case 'x':
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case 'X':
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rule->smk_access |= MAY_EXEC;
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break;
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case 'a':
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case 'A':
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rule->smk_access |= MAY_APPEND;
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break;
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case 't':
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case 'T':
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rule->smk_access |= MAY_TRANSMUTE;
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break;
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default:
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return 0;
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}
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}
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return 0;
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}
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/**
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* smk_parse_rule - parse Smack rule from load string
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* @data: string to be parsed whose size is SMK_LOADLEN
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* @rule: Smack rule
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* @import: if non-zero, import labels
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*
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* Returns 0 on success, -1 on errors.
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*/
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static int smk_parse_rule(const char *data, struct smack_rule *rule, int import)
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{
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int rc;
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rc = smk_fill_rule(data, data + SMK_LABELLEN,
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data + SMK_LABELLEN + SMK_LABELLEN, rule, import,
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SMK_LABELLEN);
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return rc;
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}
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/**
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* smk_parse_long_rule - parse Smack rule from rule string
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* @data: string to be parsed, null terminated
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* @rule: Smack rule
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* @import: if non-zero, import labels
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*
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* Returns 0 on success, -1 on failure
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*/
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static int smk_parse_long_rule(const char *data, struct smack_rule *rule,
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int import)
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{
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char *subject;
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char *object;
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char *access;
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int datalen;
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int rc = -1;
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/* This is inefficient */
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datalen = strlen(data);
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/* Our first element can be 64 + \0 with no spaces */
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subject = kzalloc(datalen + 1, GFP_KERNEL);
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if (subject == NULL)
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return -1;
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object = kzalloc(datalen, GFP_KERNEL);
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if (object == NULL)
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goto free_out_s;
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access = kzalloc(datalen, GFP_KERNEL);
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if (access == NULL)
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goto free_out_o;
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if (sscanf(data, "%s %s %s", subject, object, access) == 3)
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rc = smk_fill_rule(subject, object, access, rule, import, 0);
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kfree(access);
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free_out_o:
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kfree(object);
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free_out_s:
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kfree(subject);
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return rc;
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}
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#define SMK_FIXED24_FMT 0 /* Fixed 24byte label format */
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#define SMK_LONG_FMT 1 /* Variable long label format */
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/**
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* smk_write_rules_list - write() for any /smack rule file
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* @file: file pointer, not actually used
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* @buf: where to get the data from
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* @count: bytes sent
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* @ppos: where to start - must be 0
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* @rule_list: the list of rules to write to
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* @rule_lock: lock for the rule list
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* @format: /smack/load or /smack/load2 format.
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*
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* Get one smack access rule from above.
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* The format for SMK_LONG_FMT is:
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* "subject<whitespace>object<whitespace>access[<whitespace>...]"
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* The format for SMK_FIXED24_FMT is exactly:
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* "subject object rwxat"
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*/
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static ssize_t smk_write_rules_list(struct file *file, const char __user *buf,
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size_t count, loff_t *ppos,
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struct list_head *rule_list,
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struct mutex *rule_lock, int format)
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{
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struct smack_master_list *smlp;
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struct smack_known *skp;
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struct smack_rule *rule;
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char *data;
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int datalen;
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int rc = -EINVAL;
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int load = 0;
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/*
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* No partial writes.
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* Enough data must be present.
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*/
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if (*ppos != 0)
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return -EINVAL;
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if (format == SMK_FIXED24_FMT) {
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/*
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* Minor hack for backward compatibility
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*/
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if (count != SMK_OLOADLEN && count != SMK_LOADLEN)
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return -EINVAL;
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datalen = SMK_LOADLEN;
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} else
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datalen = count + 1;
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data = kzalloc(datalen, GFP_KERNEL);
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if (data == NULL)
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return -ENOMEM;
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if (copy_from_user(data, buf, count) != 0) {
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rc = -EFAULT;
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goto out;
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}
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rule = kzalloc(sizeof(*rule), GFP_KERNEL);
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if (rule == NULL) {
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rc = -ENOMEM;
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goto out;
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}
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if (format == SMK_LONG_FMT) {
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/*
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* Be sure the data string is terminated.
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*/
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data[count] = '\0';
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if (smk_parse_long_rule(data, rule, 1))
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goto out_free_rule;
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} else {
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/*
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* More on the minor hack for backward compatibility
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*/
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if (count == (SMK_OLOADLEN))
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data[SMK_OLOADLEN] = '-';
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if (smk_parse_rule(data, rule, 1))
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goto out_free_rule;
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}
|
|
|
|
|
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if (rule_list == NULL) {
|
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load = 1;
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skp = smk_find_entry(rule->smk_subject);
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rule_list = &skp->smk_rules;
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rule_lock = &skp->smk_rules_lock;
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}
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rc = count;
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/*
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* If this is a global as opposed to self and a new rule
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* it needs to get added for reporting.
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* smk_set_access returns true if there was already a rule
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* for the subject/object pair, and false if it was new.
|
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*/
|
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if (!smk_set_access(rule, rule_list, rule_lock)) {
|
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if (load) {
|
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smlp = kzalloc(sizeof(*smlp), GFP_KERNEL);
|
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if (smlp != NULL) {
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smlp->smk_rule = rule;
|
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list_add_rcu(&smlp->list, &smack_rule_list);
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} else
|
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rc = -ENOMEM;
|
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}
|
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goto out;
|
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}
|
|
|
|
out_free_rule:
|
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kfree(rule);
|
|
out:
|
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kfree(data);
|
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return rc;
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}
|
|
|
|
/*
|
|
* Core logic for smackfs seq list operations.
|
|
*/
|
|
|
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static void *smk_seq_start(struct seq_file *s, loff_t *pos,
|
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struct list_head *head)
|
|
{
|
|
struct list_head *list;
|
|
|
|
/*
|
|
* This is 0 the first time through.
|
|
*/
|
|
if (s->index == 0)
|
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s->private = head;
|
|
|
|
if (s->private == NULL)
|
|
return NULL;
|
|
|
|
list = s->private;
|
|
if (list_empty(list))
|
|
return NULL;
|
|
|
|
if (s->index == 0)
|
|
return list->next;
|
|
return list;
|
|
}
|
|
|
|
static void *smk_seq_next(struct seq_file *s, void *v, loff_t *pos,
|
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struct list_head *head)
|
|
{
|
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struct list_head *list = v;
|
|
|
|
if (list_is_last(list, head)) {
|
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s->private = NULL;
|
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return NULL;
|
|
}
|
|
s->private = list->next;
|
|
return list->next;
|
|
}
|
|
|
|
static void smk_seq_stop(struct seq_file *s, void *v)
|
|
{
|
|
/* No-op */
|
|
}
|
|
|
|
static void smk_rule_show(struct seq_file *s, struct smack_rule *srp, int max)
|
|
{
|
|
/*
|
|
* Don't show any rules with label names too long for
|
|
* interface file (/smack/load or /smack/load2)
|
|
* because you should expect to be able to write
|
|
* anything you read back.
|
|
*/
|
|
if (strlen(srp->smk_subject) >= max || strlen(srp->smk_object) >= max)
|
|
return;
|
|
|
|
if (srp->smk_access == 0)
|
|
return;
|
|
|
|
seq_printf(s, "%s %s", srp->smk_subject, srp->smk_object);
|
|
|
|
seq_putc(s, ' ');
|
|
|
|
if (srp->smk_access & MAY_READ)
|
|
seq_putc(s, 'r');
|
|
if (srp->smk_access & MAY_WRITE)
|
|
seq_putc(s, 'w');
|
|
if (srp->smk_access & MAY_EXEC)
|
|
seq_putc(s, 'x');
|
|
if (srp->smk_access & MAY_APPEND)
|
|
seq_putc(s, 'a');
|
|
if (srp->smk_access & MAY_TRANSMUTE)
|
|
seq_putc(s, 't');
|
|
|
|
seq_putc(s, '\n');
|
|
}
|
|
|
|
/*
|
|
* Seq_file read operations for /smack/load
|
|
*/
|
|
|
|
static void *load2_seq_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
return smk_seq_start(s, pos, &smack_rule_list);
|
|
}
|
|
|
|
static void *load2_seq_next(struct seq_file *s, void *v, loff_t *pos)
|
|
{
|
|
return smk_seq_next(s, v, pos, &smack_rule_list);
|
|
}
|
|
|
|
static int load_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct list_head *list = v;
|
|
struct smack_master_list *smlp =
|
|
list_entry(list, struct smack_master_list, list);
|
|
|
|
smk_rule_show(s, smlp->smk_rule, SMK_LABELLEN);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations load_seq_ops = {
|
|
.start = load2_seq_start,
|
|
.next = load2_seq_next,
|
|
.show = load_seq_show,
|
|
.stop = smk_seq_stop,
|
|
};
|
|
|
|
/**
|
|
* smk_open_load - open() for /smack/load
|
|
* @inode: inode structure representing file
|
|
* @file: "load" file pointer
|
|
*
|
|
* For reading, use load_seq_* seq_file reading operations.
|
|
*/
|
|
static int smk_open_load(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &load_seq_ops);
|
|
}
|
|
|
|
/**
|
|
* smk_write_load - write() for /smack/load
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start - must be 0
|
|
*
|
|
*/
|
|
static ssize_t smk_write_load(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
/*
|
|
* Must have privilege.
|
|
* No partial writes.
|
|
* Enough data must be present.
|
|
*/
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
|
|
return smk_write_rules_list(file, buf, count, ppos, NULL, NULL,
|
|
SMK_FIXED24_FMT);
|
|
}
|
|
|
|
static const struct file_operations smk_load_ops = {
|
|
.open = smk_open_load,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = smk_write_load,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/**
|
|
* smk_cipso_doi - initialize the CIPSO domain
|
|
*/
|
|
static void smk_cipso_doi(void)
|
|
{
|
|
int rc;
|
|
struct cipso_v4_doi *doip;
|
|
struct netlbl_audit nai;
|
|
|
|
smk_netlabel_audit_set(&nai);
|
|
|
|
rc = netlbl_cfg_map_del(NULL, PF_INET, NULL, NULL, &nai);
|
|
if (rc != 0)
|
|
printk(KERN_WARNING "%s:%d remove rc = %d\n",
|
|
__func__, __LINE__, rc);
|
|
|
|
doip = kmalloc(sizeof(struct cipso_v4_doi), GFP_KERNEL);
|
|
if (doip == NULL)
|
|
panic("smack: Failed to initialize cipso DOI.\n");
|
|
doip->map.std = NULL;
|
|
doip->doi = smk_cipso_doi_value;
|
|
doip->type = CIPSO_V4_MAP_PASS;
|
|
doip->tags[0] = CIPSO_V4_TAG_RBITMAP;
|
|
for (rc = 1; rc < CIPSO_V4_TAG_MAXCNT; rc++)
|
|
doip->tags[rc] = CIPSO_V4_TAG_INVALID;
|
|
|
|
rc = netlbl_cfg_cipsov4_add(doip, &nai);
|
|
if (rc != 0) {
|
|
printk(KERN_WARNING "%s:%d cipso add rc = %d\n",
|
|
__func__, __LINE__, rc);
|
|
kfree(doip);
|
|
return;
|
|
}
|
|
rc = netlbl_cfg_cipsov4_map_add(doip->doi, NULL, NULL, NULL, &nai);
|
|
if (rc != 0) {
|
|
printk(KERN_WARNING "%s:%d map add rc = %d\n",
|
|
__func__, __LINE__, rc);
|
|
kfree(doip);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* smk_unlbl_ambient - initialize the unlabeled domain
|
|
* @oldambient: previous domain string
|
|
*/
|
|
static void smk_unlbl_ambient(char *oldambient)
|
|
{
|
|
int rc;
|
|
struct netlbl_audit nai;
|
|
|
|
smk_netlabel_audit_set(&nai);
|
|
|
|
if (oldambient != NULL) {
|
|
rc = netlbl_cfg_map_del(oldambient, PF_INET, NULL, NULL, &nai);
|
|
if (rc != 0)
|
|
printk(KERN_WARNING "%s:%d remove rc = %d\n",
|
|
__func__, __LINE__, rc);
|
|
}
|
|
if (smack_net_ambient == NULL)
|
|
smack_net_ambient = smack_known_floor.smk_known;
|
|
|
|
rc = netlbl_cfg_unlbl_map_add(smack_net_ambient, PF_INET,
|
|
NULL, NULL, &nai);
|
|
if (rc != 0)
|
|
printk(KERN_WARNING "%s:%d add rc = %d\n",
|
|
__func__, __LINE__, rc);
|
|
}
|
|
|
|
/*
|
|
* Seq_file read operations for /smack/cipso
|
|
*/
|
|
|
|
static void *cipso_seq_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
return smk_seq_start(s, pos, &smack_known_list);
|
|
}
|
|
|
|
static void *cipso_seq_next(struct seq_file *s, void *v, loff_t *pos)
|
|
{
|
|
return smk_seq_next(s, v, pos, &smack_known_list);
|
|
}
|
|
|
|
/*
|
|
* Print cipso labels in format:
|
|
* label level[/cat[,cat]]
|
|
*/
|
|
static int cipso_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct list_head *list = v;
|
|
struct smack_known *skp =
|
|
list_entry(list, struct smack_known, list);
|
|
struct netlbl_lsm_secattr_catmap *cmp = skp->smk_netlabel.attr.mls.cat;
|
|
char sep = '/';
|
|
int i;
|
|
|
|
/*
|
|
* Don't show a label that could not have been set using
|
|
* /smack/cipso. This is in support of the notion that
|
|
* anything read from /smack/cipso ought to be writeable
|
|
* to /smack/cipso.
|
|
*
|
|
* /smack/cipso2 should be used instead.
|
|
*/
|
|
if (strlen(skp->smk_known) >= SMK_LABELLEN)
|
|
return 0;
|
|
|
|
seq_printf(s, "%s %3d", skp->smk_known, skp->smk_netlabel.attr.mls.lvl);
|
|
|
|
for (i = netlbl_secattr_catmap_walk(cmp, 0); i >= 0;
|
|
i = netlbl_secattr_catmap_walk(cmp, i + 1)) {
|
|
seq_printf(s, "%c%d", sep, i);
|
|
sep = ',';
|
|
}
|
|
|
|
seq_putc(s, '\n');
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations cipso_seq_ops = {
|
|
.start = cipso_seq_start,
|
|
.next = cipso_seq_next,
|
|
.show = cipso_seq_show,
|
|
.stop = smk_seq_stop,
|
|
};
|
|
|
|
/**
|
|
* smk_open_cipso - open() for /smack/cipso
|
|
* @inode: inode structure representing file
|
|
* @file: "cipso" file pointer
|
|
*
|
|
* Connect our cipso_seq_* operations with /smack/cipso
|
|
* file_operations
|
|
*/
|
|
static int smk_open_cipso(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &cipso_seq_ops);
|
|
}
|
|
|
|
/**
|
|
* smk_set_cipso - do the work for write() for cipso and cipso2
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
* @format: /smack/cipso or /smack/cipso2
|
|
*
|
|
* Accepts only one cipso rule per write call.
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_set_cipso(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos, int format)
|
|
{
|
|
struct smack_known *skp;
|
|
struct netlbl_lsm_secattr ncats;
|
|
char mapcatset[SMK_CIPSOLEN];
|
|
int maplevel;
|
|
unsigned int cat;
|
|
int catlen;
|
|
ssize_t rc = -EINVAL;
|
|
char *data = NULL;
|
|
char *rule;
|
|
int ret;
|
|
int i;
|
|
|
|
/*
|
|
* Must have privilege.
|
|
* No partial writes.
|
|
* Enough data must be present.
|
|
*/
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
if (*ppos != 0)
|
|
return -EINVAL;
|
|
if (format == SMK_FIXED24_FMT &&
|
|
(count < SMK_CIPSOMIN || count > SMK_CIPSOMAX))
|
|
return -EINVAL;
|
|
|
|
data = kzalloc(count + 1, GFP_KERNEL);
|
|
if (data == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(data, buf, count) != 0) {
|
|
rc = -EFAULT;
|
|
goto unlockedout;
|
|
}
|
|
|
|
data[count] = '\0';
|
|
rule = data;
|
|
/*
|
|
* Only allow one writer at a time. Writes should be
|
|
* quite rare and small in any case.
|
|
*/
|
|
mutex_lock(&smack_cipso_lock);
|
|
|
|
skp = smk_import_entry(rule, 0);
|
|
if (skp == NULL)
|
|
goto out;
|
|
|
|
if (format == SMK_FIXED24_FMT)
|
|
rule += SMK_LABELLEN;
|
|
else
|
|
rule += strlen(skp->smk_known);
|
|
|
|
ret = sscanf(rule, "%d", &maplevel);
|
|
if (ret != 1 || maplevel > SMACK_CIPSO_MAXLEVEL)
|
|
goto out;
|
|
|
|
rule += SMK_DIGITLEN;
|
|
ret = sscanf(rule, "%d", &catlen);
|
|
if (ret != 1 || catlen > SMACK_CIPSO_MAXCATNUM)
|
|
goto out;
|
|
|
|
if (format == SMK_FIXED24_FMT &&
|
|
count != (SMK_CIPSOMIN + catlen * SMK_DIGITLEN))
|
|
goto out;
|
|
|
|
memset(mapcatset, 0, sizeof(mapcatset));
|
|
|
|
for (i = 0; i < catlen; i++) {
|
|
rule += SMK_DIGITLEN;
|
|
ret = sscanf(rule, "%u", &cat);
|
|
if (ret != 1 || cat > SMACK_CIPSO_MAXCATVAL)
|
|
goto out;
|
|
|
|
smack_catset_bit(cat, mapcatset);
|
|
}
|
|
|
|
rc = smk_netlbl_mls(maplevel, mapcatset, &ncats, SMK_CIPSOLEN);
|
|
if (rc >= 0) {
|
|
netlbl_secattr_catmap_free(skp->smk_netlabel.attr.mls.cat);
|
|
skp->smk_netlabel.attr.mls.cat = ncats.attr.mls.cat;
|
|
skp->smk_netlabel.attr.mls.lvl = ncats.attr.mls.lvl;
|
|
rc = count;
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&smack_cipso_lock);
|
|
unlockedout:
|
|
kfree(data);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* smk_write_cipso - write() for /smack/cipso
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
*
|
|
* Accepts only one cipso rule per write call.
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_write_cipso(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return smk_set_cipso(file, buf, count, ppos, SMK_FIXED24_FMT);
|
|
}
|
|
|
|
static const struct file_operations smk_cipso_ops = {
|
|
.open = smk_open_cipso,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = smk_write_cipso,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/*
|
|
* Seq_file read operations for /smack/cipso2
|
|
*/
|
|
|
|
/*
|
|
* Print cipso labels in format:
|
|
* label level[/cat[,cat]]
|
|
*/
|
|
static int cipso2_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct list_head *list = v;
|
|
struct smack_known *skp =
|
|
list_entry(list, struct smack_known, list);
|
|
struct netlbl_lsm_secattr_catmap *cmp = skp->smk_netlabel.attr.mls.cat;
|
|
char sep = '/';
|
|
int i;
|
|
|
|
seq_printf(s, "%s %3d", skp->smk_known, skp->smk_netlabel.attr.mls.lvl);
|
|
|
|
for (i = netlbl_secattr_catmap_walk(cmp, 0); i >= 0;
|
|
i = netlbl_secattr_catmap_walk(cmp, i + 1)) {
|
|
seq_printf(s, "%c%d", sep, i);
|
|
sep = ',';
|
|
}
|
|
|
|
seq_putc(s, '\n');
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations cipso2_seq_ops = {
|
|
.start = cipso_seq_start,
|
|
.next = cipso_seq_next,
|
|
.show = cipso2_seq_show,
|
|
.stop = smk_seq_stop,
|
|
};
|
|
|
|
/**
|
|
* smk_open_cipso2 - open() for /smack/cipso2
|
|
* @inode: inode structure representing file
|
|
* @file: "cipso2" file pointer
|
|
*
|
|
* Connect our cipso_seq_* operations with /smack/cipso2
|
|
* file_operations
|
|
*/
|
|
static int smk_open_cipso2(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &cipso2_seq_ops);
|
|
}
|
|
|
|
/**
|
|
* smk_write_cipso2 - write() for /smack/cipso2
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
*
|
|
* Accepts only one cipso rule per write call.
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_write_cipso2(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return smk_set_cipso(file, buf, count, ppos, SMK_LONG_FMT);
|
|
}
|
|
|
|
static const struct file_operations smk_cipso2_ops = {
|
|
.open = smk_open_cipso2,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = smk_write_cipso2,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/*
|
|
* Seq_file read operations for /smack/netlabel
|
|
*/
|
|
|
|
static void *netlbladdr_seq_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
return smk_seq_start(s, pos, &smk_netlbladdr_list);
|
|
}
|
|
|
|
static void *netlbladdr_seq_next(struct seq_file *s, void *v, loff_t *pos)
|
|
{
|
|
return smk_seq_next(s, v, pos, &smk_netlbladdr_list);
|
|
}
|
|
#define BEBITS (sizeof(__be32) * 8)
|
|
|
|
/*
|
|
* Print host/label pairs
|
|
*/
|
|
static int netlbladdr_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct list_head *list = v;
|
|
struct smk_netlbladdr *skp =
|
|
list_entry(list, struct smk_netlbladdr, list);
|
|
unsigned char *hp = (char *) &skp->smk_host.sin_addr.s_addr;
|
|
int maskn;
|
|
u32 temp_mask = be32_to_cpu(skp->smk_mask.s_addr);
|
|
|
|
for (maskn = 0; temp_mask; temp_mask <<= 1, maskn++);
|
|
|
|
seq_printf(s, "%u.%u.%u.%u/%d %s\n",
|
|
hp[0], hp[1], hp[2], hp[3], maskn, skp->smk_label);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations netlbladdr_seq_ops = {
|
|
.start = netlbladdr_seq_start,
|
|
.next = netlbladdr_seq_next,
|
|
.show = netlbladdr_seq_show,
|
|
.stop = smk_seq_stop,
|
|
};
|
|
|
|
/**
|
|
* smk_open_netlbladdr - open() for /smack/netlabel
|
|
* @inode: inode structure representing file
|
|
* @file: "netlabel" file pointer
|
|
*
|
|
* Connect our netlbladdr_seq_* operations with /smack/netlabel
|
|
* file_operations
|
|
*/
|
|
static int smk_open_netlbladdr(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &netlbladdr_seq_ops);
|
|
}
|
|
|
|
/**
|
|
* smk_netlbladdr_insert
|
|
* @new : netlabel to insert
|
|
*
|
|
* This helper insert netlabel in the smack_netlbladdrs list
|
|
* sorted by netmask length (longest to smallest)
|
|
* locked by &smk_netlbladdr_lock in smk_write_netlbladdr
|
|
*
|
|
*/
|
|
static void smk_netlbladdr_insert(struct smk_netlbladdr *new)
|
|
{
|
|
struct smk_netlbladdr *m, *m_next;
|
|
|
|
if (list_empty(&smk_netlbladdr_list)) {
|
|
list_add_rcu(&new->list, &smk_netlbladdr_list);
|
|
return;
|
|
}
|
|
|
|
m = list_entry_rcu(smk_netlbladdr_list.next,
|
|
struct smk_netlbladdr, list);
|
|
|
|
/* the comparison '>' is a bit hacky, but works */
|
|
if (new->smk_mask.s_addr > m->smk_mask.s_addr) {
|
|
list_add_rcu(&new->list, &smk_netlbladdr_list);
|
|
return;
|
|
}
|
|
|
|
list_for_each_entry_rcu(m, &smk_netlbladdr_list, list) {
|
|
if (list_is_last(&m->list, &smk_netlbladdr_list)) {
|
|
list_add_rcu(&new->list, &m->list);
|
|
return;
|
|
}
|
|
m_next = list_entry_rcu(m->list.next,
|
|
struct smk_netlbladdr, list);
|
|
if (new->smk_mask.s_addr > m_next->smk_mask.s_addr) {
|
|
list_add_rcu(&new->list, &m->list);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* smk_write_netlbladdr - write() for /smack/netlabel
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
*
|
|
* Accepts only one netlbladdr per write call.
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_write_netlbladdr(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct smk_netlbladdr *skp;
|
|
struct sockaddr_in newname;
|
|
char *smack;
|
|
char *sp;
|
|
char *data;
|
|
char *host = (char *)&newname.sin_addr.s_addr;
|
|
int rc;
|
|
struct netlbl_audit audit_info;
|
|
struct in_addr mask;
|
|
unsigned int m;
|
|
int found;
|
|
u32 mask_bits = (1<<31);
|
|
__be32 nsa;
|
|
u32 temp_mask;
|
|
|
|
/*
|
|
* Must have privilege.
|
|
* No partial writes.
|
|
* Enough data must be present.
|
|
* "<addr/mask, as a.b.c.d/e><space><label>"
|
|
* "<addr, as a.b.c.d><space><label>"
|
|
*/
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
if (*ppos != 0)
|
|
return -EINVAL;
|
|
if (count < SMK_NETLBLADDRMIN)
|
|
return -EINVAL;
|
|
|
|
data = kzalloc(count + 1, GFP_KERNEL);
|
|
if (data == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(data, buf, count) != 0) {
|
|
rc = -EFAULT;
|
|
goto free_data_out;
|
|
}
|
|
|
|
smack = kzalloc(count + 1, GFP_KERNEL);
|
|
if (smack == NULL) {
|
|
rc = -ENOMEM;
|
|
goto free_data_out;
|
|
}
|
|
|
|
data[count] = '\0';
|
|
|
|
rc = sscanf(data, "%hhd.%hhd.%hhd.%hhd/%d %s",
|
|
&host[0], &host[1], &host[2], &host[3], &m, smack);
|
|
if (rc != 6) {
|
|
rc = sscanf(data, "%hhd.%hhd.%hhd.%hhd %s",
|
|
&host[0], &host[1], &host[2], &host[3], smack);
|
|
if (rc != 5) {
|
|
rc = -EINVAL;
|
|
goto free_out;
|
|
}
|
|
m = BEBITS;
|
|
}
|
|
if (m > BEBITS) {
|
|
rc = -EINVAL;
|
|
goto free_out;
|
|
}
|
|
|
|
/*
|
|
* If smack begins with '-', it is an option, don't import it
|
|
*/
|
|
if (smack[0] != '-') {
|
|
sp = smk_import(smack, 0);
|
|
if (sp == NULL) {
|
|
rc = -EINVAL;
|
|
goto free_out;
|
|
}
|
|
} else {
|
|
/* check known options */
|
|
if (strcmp(smack, smack_cipso_option) == 0)
|
|
sp = (char *)smack_cipso_option;
|
|
else {
|
|
rc = -EINVAL;
|
|
goto free_out;
|
|
}
|
|
}
|
|
|
|
for (temp_mask = 0; m > 0; m--) {
|
|
temp_mask |= mask_bits;
|
|
mask_bits >>= 1;
|
|
}
|
|
mask.s_addr = cpu_to_be32(temp_mask);
|
|
|
|
newname.sin_addr.s_addr &= mask.s_addr;
|
|
/*
|
|
* Only allow one writer at a time. Writes should be
|
|
* quite rare and small in any case.
|
|
*/
|
|
mutex_lock(&smk_netlbladdr_lock);
|
|
|
|
nsa = newname.sin_addr.s_addr;
|
|
/* try to find if the prefix is already in the list */
|
|
found = 0;
|
|
list_for_each_entry_rcu(skp, &smk_netlbladdr_list, list) {
|
|
if (skp->smk_host.sin_addr.s_addr == nsa &&
|
|
skp->smk_mask.s_addr == mask.s_addr) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
smk_netlabel_audit_set(&audit_info);
|
|
|
|
if (found == 0) {
|
|
skp = kzalloc(sizeof(*skp), GFP_KERNEL);
|
|
if (skp == NULL)
|
|
rc = -ENOMEM;
|
|
else {
|
|
rc = 0;
|
|
skp->smk_host.sin_addr.s_addr = newname.sin_addr.s_addr;
|
|
skp->smk_mask.s_addr = mask.s_addr;
|
|
skp->smk_label = sp;
|
|
smk_netlbladdr_insert(skp);
|
|
}
|
|
} else {
|
|
/* we delete the unlabeled entry, only if the previous label
|
|
* wasn't the special CIPSO option */
|
|
if (skp->smk_label != smack_cipso_option)
|
|
rc = netlbl_cfg_unlbl_static_del(&init_net, NULL,
|
|
&skp->smk_host.sin_addr, &skp->smk_mask,
|
|
PF_INET, &audit_info);
|
|
else
|
|
rc = 0;
|
|
skp->smk_label = sp;
|
|
}
|
|
|
|
/*
|
|
* Now tell netlabel about the single label nature of
|
|
* this host so that incoming packets get labeled.
|
|
* but only if we didn't get the special CIPSO option
|
|
*/
|
|
if (rc == 0 && sp != smack_cipso_option)
|
|
rc = netlbl_cfg_unlbl_static_add(&init_net, NULL,
|
|
&skp->smk_host.sin_addr, &skp->smk_mask, PF_INET,
|
|
smack_to_secid(skp->smk_label), &audit_info);
|
|
|
|
if (rc == 0)
|
|
rc = count;
|
|
|
|
mutex_unlock(&smk_netlbladdr_lock);
|
|
|
|
free_out:
|
|
kfree(smack);
|
|
free_data_out:
|
|
kfree(data);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static const struct file_operations smk_netlbladdr_ops = {
|
|
.open = smk_open_netlbladdr,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = smk_write_netlbladdr,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/**
|
|
* smk_read_doi - read() for /smack/doi
|
|
* @filp: file pointer, not actually used
|
|
* @buf: where to put the result
|
|
* @count: maximum to send along
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes read or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_read_doi(struct file *filp, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char temp[80];
|
|
ssize_t rc;
|
|
|
|
if (*ppos != 0)
|
|
return 0;
|
|
|
|
sprintf(temp, "%d", smk_cipso_doi_value);
|
|
rc = simple_read_from_buffer(buf, count, ppos, temp, strlen(temp));
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* smk_write_doi - write() for /smack/doi
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_write_doi(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char temp[80];
|
|
int i;
|
|
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (count >= sizeof(temp) || count == 0)
|
|
return -EINVAL;
|
|
|
|
if (copy_from_user(temp, buf, count) != 0)
|
|
return -EFAULT;
|
|
|
|
temp[count] = '\0';
|
|
|
|
if (sscanf(temp, "%d", &i) != 1)
|
|
return -EINVAL;
|
|
|
|
smk_cipso_doi_value = i;
|
|
|
|
smk_cipso_doi();
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations smk_doi_ops = {
|
|
.read = smk_read_doi,
|
|
.write = smk_write_doi,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
/**
|
|
* smk_read_direct - read() for /smack/direct
|
|
* @filp: file pointer, not actually used
|
|
* @buf: where to put the result
|
|
* @count: maximum to send along
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes read or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_read_direct(struct file *filp, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char temp[80];
|
|
ssize_t rc;
|
|
|
|
if (*ppos != 0)
|
|
return 0;
|
|
|
|
sprintf(temp, "%d", smack_cipso_direct);
|
|
rc = simple_read_from_buffer(buf, count, ppos, temp, strlen(temp));
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* smk_write_direct - write() for /smack/direct
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_write_direct(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct smack_known *skp;
|
|
char temp[80];
|
|
int i;
|
|
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (count >= sizeof(temp) || count == 0)
|
|
return -EINVAL;
|
|
|
|
if (copy_from_user(temp, buf, count) != 0)
|
|
return -EFAULT;
|
|
|
|
temp[count] = '\0';
|
|
|
|
if (sscanf(temp, "%d", &i) != 1)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Don't do anything if the value hasn't actually changed.
|
|
* If it is changing reset the level on entries that were
|
|
* set up to be direct when they were created.
|
|
*/
|
|
if (smack_cipso_direct != i) {
|
|
mutex_lock(&smack_known_lock);
|
|
list_for_each_entry_rcu(skp, &smack_known_list, list)
|
|
if (skp->smk_netlabel.attr.mls.lvl ==
|
|
smack_cipso_direct)
|
|
skp->smk_netlabel.attr.mls.lvl = i;
|
|
smack_cipso_direct = i;
|
|
mutex_unlock(&smack_known_lock);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations smk_direct_ops = {
|
|
.read = smk_read_direct,
|
|
.write = smk_write_direct,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
/**
|
|
* smk_read_mapped - read() for /smack/mapped
|
|
* @filp: file pointer, not actually used
|
|
* @buf: where to put the result
|
|
* @count: maximum to send along
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes read or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_read_mapped(struct file *filp, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char temp[80];
|
|
ssize_t rc;
|
|
|
|
if (*ppos != 0)
|
|
return 0;
|
|
|
|
sprintf(temp, "%d", smack_cipso_mapped);
|
|
rc = simple_read_from_buffer(buf, count, ppos, temp, strlen(temp));
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* smk_write_mapped - write() for /smack/mapped
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_write_mapped(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct smack_known *skp;
|
|
char temp[80];
|
|
int i;
|
|
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (count >= sizeof(temp) || count == 0)
|
|
return -EINVAL;
|
|
|
|
if (copy_from_user(temp, buf, count) != 0)
|
|
return -EFAULT;
|
|
|
|
temp[count] = '\0';
|
|
|
|
if (sscanf(temp, "%d", &i) != 1)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Don't do anything if the value hasn't actually changed.
|
|
* If it is changing reset the level on entries that were
|
|
* set up to be mapped when they were created.
|
|
*/
|
|
if (smack_cipso_mapped != i) {
|
|
mutex_lock(&smack_known_lock);
|
|
list_for_each_entry_rcu(skp, &smack_known_list, list)
|
|
if (skp->smk_netlabel.attr.mls.lvl ==
|
|
smack_cipso_mapped)
|
|
skp->smk_netlabel.attr.mls.lvl = i;
|
|
smack_cipso_mapped = i;
|
|
mutex_unlock(&smack_known_lock);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations smk_mapped_ops = {
|
|
.read = smk_read_mapped,
|
|
.write = smk_write_mapped,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
/**
|
|
* smk_read_ambient - read() for /smack/ambient
|
|
* @filp: file pointer, not actually used
|
|
* @buf: where to put the result
|
|
* @cn: maximum to send along
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes read or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_read_ambient(struct file *filp, char __user *buf,
|
|
size_t cn, loff_t *ppos)
|
|
{
|
|
ssize_t rc;
|
|
int asize;
|
|
|
|
if (*ppos != 0)
|
|
return 0;
|
|
/*
|
|
* Being careful to avoid a problem in the case where
|
|
* smack_net_ambient gets changed in midstream.
|
|
*/
|
|
mutex_lock(&smack_ambient_lock);
|
|
|
|
asize = strlen(smack_net_ambient) + 1;
|
|
|
|
if (cn >= asize)
|
|
rc = simple_read_from_buffer(buf, cn, ppos,
|
|
smack_net_ambient, asize);
|
|
else
|
|
rc = -EINVAL;
|
|
|
|
mutex_unlock(&smack_ambient_lock);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* smk_write_ambient - write() for /smack/ambient
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_write_ambient(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char *oldambient;
|
|
char *smack = NULL;
|
|
char *data;
|
|
int rc = count;
|
|
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
|
|
data = kzalloc(count + 1, GFP_KERNEL);
|
|
if (data == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(data, buf, count) != 0) {
|
|
rc = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
smack = smk_import(data, count);
|
|
if (smack == NULL) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
mutex_lock(&smack_ambient_lock);
|
|
|
|
oldambient = smack_net_ambient;
|
|
smack_net_ambient = smack;
|
|
smk_unlbl_ambient(oldambient);
|
|
|
|
mutex_unlock(&smack_ambient_lock);
|
|
|
|
out:
|
|
kfree(data);
|
|
return rc;
|
|
}
|
|
|
|
static const struct file_operations smk_ambient_ops = {
|
|
.read = smk_read_ambient,
|
|
.write = smk_write_ambient,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
/**
|
|
* smk_read_onlycap - read() for /smack/onlycap
|
|
* @filp: file pointer, not actually used
|
|
* @buf: where to put the result
|
|
* @cn: maximum to send along
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes read or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_read_onlycap(struct file *filp, char __user *buf,
|
|
size_t cn, loff_t *ppos)
|
|
{
|
|
char *smack = "";
|
|
ssize_t rc = -EINVAL;
|
|
int asize;
|
|
|
|
if (*ppos != 0)
|
|
return 0;
|
|
|
|
if (smack_onlycap != NULL)
|
|
smack = smack_onlycap;
|
|
|
|
asize = strlen(smack) + 1;
|
|
|
|
if (cn >= asize)
|
|
rc = simple_read_from_buffer(buf, cn, ppos, smack, asize);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* smk_write_onlycap - write() for /smack/onlycap
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_write_onlycap(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char *data;
|
|
char *sp = smk_of_task(current->cred->security);
|
|
int rc = count;
|
|
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
|
|
/*
|
|
* This can be done using smk_access() but is done
|
|
* explicitly for clarity. The smk_access() implementation
|
|
* would use smk_access(smack_onlycap, MAY_WRITE)
|
|
*/
|
|
if (smack_onlycap != NULL && smack_onlycap != sp)
|
|
return -EPERM;
|
|
|
|
data = kzalloc(count, GFP_KERNEL);
|
|
if (data == NULL)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* Should the null string be passed in unset the onlycap value.
|
|
* This seems like something to be careful with as usually
|
|
* smk_import only expects to return NULL for errors. It
|
|
* is usually the case that a nullstring or "\n" would be
|
|
* bad to pass to smk_import but in fact this is useful here.
|
|
*
|
|
* smk_import will also reject a label beginning with '-',
|
|
* so "-usecapabilities" will also work.
|
|
*/
|
|
if (copy_from_user(data, buf, count) != 0)
|
|
rc = -EFAULT;
|
|
else
|
|
smack_onlycap = smk_import(data, count);
|
|
|
|
kfree(data);
|
|
return rc;
|
|
}
|
|
|
|
static const struct file_operations smk_onlycap_ops = {
|
|
.read = smk_read_onlycap,
|
|
.write = smk_write_onlycap,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
/**
|
|
* smk_read_logging - read() for /smack/logging
|
|
* @filp: file pointer, not actually used
|
|
* @buf: where to put the result
|
|
* @cn: maximum to send along
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes read or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_read_logging(struct file *filp, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char temp[32];
|
|
ssize_t rc;
|
|
|
|
if (*ppos != 0)
|
|
return 0;
|
|
|
|
sprintf(temp, "%d\n", log_policy);
|
|
rc = simple_read_from_buffer(buf, count, ppos, temp, strlen(temp));
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* smk_write_logging - write() for /smack/logging
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start
|
|
*
|
|
* Returns number of bytes written or error code, as appropriate
|
|
*/
|
|
static ssize_t smk_write_logging(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
char temp[32];
|
|
int i;
|
|
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (count >= sizeof(temp) || count == 0)
|
|
return -EINVAL;
|
|
|
|
if (copy_from_user(temp, buf, count) != 0)
|
|
return -EFAULT;
|
|
|
|
temp[count] = '\0';
|
|
|
|
if (sscanf(temp, "%d", &i) != 1)
|
|
return -EINVAL;
|
|
if (i < 0 || i > 3)
|
|
return -EINVAL;
|
|
log_policy = i;
|
|
return count;
|
|
}
|
|
|
|
|
|
|
|
static const struct file_operations smk_logging_ops = {
|
|
.read = smk_read_logging,
|
|
.write = smk_write_logging,
|
|
.llseek = default_llseek,
|
|
};
|
|
|
|
/*
|
|
* Seq_file read operations for /smack/load-self
|
|
*/
|
|
|
|
static void *load_self_seq_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
struct task_smack *tsp = current_security();
|
|
|
|
return smk_seq_start(s, pos, &tsp->smk_rules);
|
|
}
|
|
|
|
static void *load_self_seq_next(struct seq_file *s, void *v, loff_t *pos)
|
|
{
|
|
struct task_smack *tsp = current_security();
|
|
|
|
return smk_seq_next(s, v, pos, &tsp->smk_rules);
|
|
}
|
|
|
|
static int load_self_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct list_head *list = v;
|
|
struct smack_rule *srp =
|
|
list_entry(list, struct smack_rule, list);
|
|
|
|
smk_rule_show(s, srp, SMK_LABELLEN);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations load_self_seq_ops = {
|
|
.start = load_self_seq_start,
|
|
.next = load_self_seq_next,
|
|
.show = load_self_seq_show,
|
|
.stop = smk_seq_stop,
|
|
};
|
|
|
|
|
|
/**
|
|
* smk_open_load_self - open() for /smack/load-self2
|
|
* @inode: inode structure representing file
|
|
* @file: "load" file pointer
|
|
*
|
|
* For reading, use load_seq_* seq_file reading operations.
|
|
*/
|
|
static int smk_open_load_self(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &load_self_seq_ops);
|
|
}
|
|
|
|
/**
|
|
* smk_write_load_self - write() for /smack/load-self
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start - must be 0
|
|
*
|
|
*/
|
|
static ssize_t smk_write_load_self(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct task_smack *tsp = current_security();
|
|
|
|
return smk_write_rules_list(file, buf, count, ppos, &tsp->smk_rules,
|
|
&tsp->smk_rules_lock, SMK_FIXED24_FMT);
|
|
}
|
|
|
|
static const struct file_operations smk_load_self_ops = {
|
|
.open = smk_open_load_self,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = smk_write_load_self,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/**
|
|
* smk_user_access - handle access check transaction
|
|
* @file: file pointer
|
|
* @buf: data from user space
|
|
* @count: bytes sent
|
|
* @ppos: where to start - must be 0
|
|
*/
|
|
static ssize_t smk_user_access(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos, int format)
|
|
{
|
|
struct smack_rule rule;
|
|
char *data;
|
|
char *cod;
|
|
int res;
|
|
|
|
data = simple_transaction_get(file, buf, count);
|
|
if (IS_ERR(data))
|
|
return PTR_ERR(data);
|
|
|
|
if (format == SMK_FIXED24_FMT) {
|
|
if (count < SMK_LOADLEN)
|
|
return -EINVAL;
|
|
res = smk_parse_rule(data, &rule, 0);
|
|
} else {
|
|
/*
|
|
* Copy the data to make sure the string is terminated.
|
|
*/
|
|
cod = kzalloc(count + 1, GFP_KERNEL);
|
|
if (cod == NULL)
|
|
return -ENOMEM;
|
|
memcpy(cod, data, count);
|
|
cod[count] = '\0';
|
|
res = smk_parse_long_rule(cod, &rule, 0);
|
|
kfree(cod);
|
|
}
|
|
|
|
if (res)
|
|
return -EINVAL;
|
|
|
|
res = smk_access(rule.smk_subject, rule.smk_object, rule.smk_access,
|
|
NULL);
|
|
data[0] = res == 0 ? '1' : '0';
|
|
data[1] = '\0';
|
|
|
|
simple_transaction_set(file, 2);
|
|
|
|
if (format == SMK_FIXED24_FMT)
|
|
return SMK_LOADLEN;
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* smk_write_access - handle access check transaction
|
|
* @file: file pointer
|
|
* @buf: data from user space
|
|
* @count: bytes sent
|
|
* @ppos: where to start - must be 0
|
|
*/
|
|
static ssize_t smk_write_access(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return smk_user_access(file, buf, count, ppos, SMK_FIXED24_FMT);
|
|
}
|
|
|
|
static const struct file_operations smk_access_ops = {
|
|
.write = smk_write_access,
|
|
.read = simple_transaction_read,
|
|
.release = simple_transaction_release,
|
|
.llseek = generic_file_llseek,
|
|
};
|
|
|
|
|
|
/*
|
|
* Seq_file read operations for /smack/load2
|
|
*/
|
|
|
|
static int load2_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct list_head *list = v;
|
|
struct smack_master_list *smlp =
|
|
list_entry(list, struct smack_master_list, list);
|
|
|
|
smk_rule_show(s, smlp->smk_rule, SMK_LONGLABEL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations load2_seq_ops = {
|
|
.start = load2_seq_start,
|
|
.next = load2_seq_next,
|
|
.show = load2_seq_show,
|
|
.stop = smk_seq_stop,
|
|
};
|
|
|
|
/**
|
|
* smk_open_load2 - open() for /smack/load2
|
|
* @inode: inode structure representing file
|
|
* @file: "load2" file pointer
|
|
*
|
|
* For reading, use load2_seq_* seq_file reading operations.
|
|
*/
|
|
static int smk_open_load2(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &load2_seq_ops);
|
|
}
|
|
|
|
/**
|
|
* smk_write_load2 - write() for /smack/load2
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start - must be 0
|
|
*
|
|
*/
|
|
static ssize_t smk_write_load2(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
/*
|
|
* Must have privilege.
|
|
*/
|
|
if (!smack_privileged(CAP_MAC_ADMIN))
|
|
return -EPERM;
|
|
|
|
return smk_write_rules_list(file, buf, count, ppos, NULL, NULL,
|
|
SMK_LONG_FMT);
|
|
}
|
|
|
|
static const struct file_operations smk_load2_ops = {
|
|
.open = smk_open_load2,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = smk_write_load2,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/*
|
|
* Seq_file read operations for /smack/load-self2
|
|
*/
|
|
|
|
static void *load_self2_seq_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
struct task_smack *tsp = current_security();
|
|
|
|
return smk_seq_start(s, pos, &tsp->smk_rules);
|
|
}
|
|
|
|
static void *load_self2_seq_next(struct seq_file *s, void *v, loff_t *pos)
|
|
{
|
|
struct task_smack *tsp = current_security();
|
|
|
|
return smk_seq_next(s, v, pos, &tsp->smk_rules);
|
|
}
|
|
|
|
static int load_self2_seq_show(struct seq_file *s, void *v)
|
|
{
|
|
struct list_head *list = v;
|
|
struct smack_rule *srp =
|
|
list_entry(list, struct smack_rule, list);
|
|
|
|
smk_rule_show(s, srp, SMK_LONGLABEL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations load_self2_seq_ops = {
|
|
.start = load_self2_seq_start,
|
|
.next = load_self2_seq_next,
|
|
.show = load_self2_seq_show,
|
|
.stop = smk_seq_stop,
|
|
};
|
|
|
|
/**
|
|
* smk_open_load_self2 - open() for /smack/load-self2
|
|
* @inode: inode structure representing file
|
|
* @file: "load" file pointer
|
|
*
|
|
* For reading, use load_seq_* seq_file reading operations.
|
|
*/
|
|
static int smk_open_load_self2(struct inode *inode, struct file *file)
|
|
{
|
|
return seq_open(file, &load_self2_seq_ops);
|
|
}
|
|
|
|
/**
|
|
* smk_write_load_self2 - write() for /smack/load-self2
|
|
* @file: file pointer, not actually used
|
|
* @buf: where to get the data from
|
|
* @count: bytes sent
|
|
* @ppos: where to start - must be 0
|
|
*
|
|
*/
|
|
static ssize_t smk_write_load_self2(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct task_smack *tsp = current_security();
|
|
|
|
return smk_write_rules_list(file, buf, count, ppos, &tsp->smk_rules,
|
|
&tsp->smk_rules_lock, SMK_LONG_FMT);
|
|
}
|
|
|
|
static const struct file_operations smk_load_self2_ops = {
|
|
.open = smk_open_load_self2,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.write = smk_write_load_self2,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/**
|
|
* smk_write_access2 - handle access check transaction
|
|
* @file: file pointer
|
|
* @buf: data from user space
|
|
* @count: bytes sent
|
|
* @ppos: where to start - must be 0
|
|
*/
|
|
static ssize_t smk_write_access2(struct file *file, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
return smk_user_access(file, buf, count, ppos, SMK_LONG_FMT);
|
|
}
|
|
|
|
static const struct file_operations smk_access2_ops = {
|
|
.write = smk_write_access2,
|
|
.read = simple_transaction_read,
|
|
.release = simple_transaction_release,
|
|
.llseek = generic_file_llseek,
|
|
};
|
|
|
|
/**
|
|
* smk_fill_super - fill the /smackfs superblock
|
|
* @sb: the empty superblock
|
|
* @data: unused
|
|
* @silent: unused
|
|
*
|
|
* Fill in the well known entries for /smack
|
|
*
|
|
* Returns 0 on success, an error code on failure
|
|
*/
|
|
static int smk_fill_super(struct super_block *sb, void *data, int silent)
|
|
{
|
|
int rc;
|
|
struct inode *root_inode;
|
|
|
|
static struct tree_descr smack_files[] = {
|
|
[SMK_LOAD] = {
|
|
"load", &smk_load_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_CIPSO] = {
|
|
"cipso", &smk_cipso_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_DOI] = {
|
|
"doi", &smk_doi_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_DIRECT] = {
|
|
"direct", &smk_direct_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_AMBIENT] = {
|
|
"ambient", &smk_ambient_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_NETLBLADDR] = {
|
|
"netlabel", &smk_netlbladdr_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_ONLYCAP] = {
|
|
"onlycap", &smk_onlycap_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_LOGGING] = {
|
|
"logging", &smk_logging_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_LOAD_SELF] = {
|
|
"load-self", &smk_load_self_ops, S_IRUGO|S_IWUGO},
|
|
[SMK_ACCESSES] = {
|
|
"access", &smk_access_ops, S_IRUGO|S_IWUGO},
|
|
[SMK_MAPPED] = {
|
|
"mapped", &smk_mapped_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_LOAD2] = {
|
|
"load2", &smk_load2_ops, S_IRUGO|S_IWUSR},
|
|
[SMK_LOAD_SELF2] = {
|
|
"load-self2", &smk_load_self2_ops, S_IRUGO|S_IWUGO},
|
|
[SMK_ACCESS2] = {
|
|
"access2", &smk_access2_ops, S_IRUGO|S_IWUGO},
|
|
[SMK_CIPSO2] = {
|
|
"cipso2", &smk_cipso2_ops, S_IRUGO|S_IWUSR},
|
|
/* last one */
|
|
{""}
|
|
};
|
|
|
|
rc = simple_fill_super(sb, SMACK_MAGIC, smack_files);
|
|
if (rc != 0) {
|
|
printk(KERN_ERR "%s failed %d while creating inodes\n",
|
|
__func__, rc);
|
|
return rc;
|
|
}
|
|
|
|
root_inode = sb->s_root->d_inode;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* smk_mount - get the smackfs superblock
|
|
* @fs_type: passed along without comment
|
|
* @flags: passed along without comment
|
|
* @dev_name: passed along without comment
|
|
* @data: passed along without comment
|
|
*
|
|
* Just passes everything along.
|
|
*
|
|
* Returns what the lower level code does.
|
|
*/
|
|
static struct dentry *smk_mount(struct file_system_type *fs_type,
|
|
int flags, const char *dev_name, void *data)
|
|
{
|
|
return mount_single(fs_type, flags, data, smk_fill_super);
|
|
}
|
|
|
|
static struct file_system_type smk_fs_type = {
|
|
.name = "smackfs",
|
|
.mount = smk_mount,
|
|
.kill_sb = kill_litter_super,
|
|
};
|
|
|
|
static struct vfsmount *smackfs_mount;
|
|
|
|
static int __init smk_preset_netlabel(struct smack_known *skp)
|
|
{
|
|
skp->smk_netlabel.domain = skp->smk_known;
|
|
skp->smk_netlabel.flags =
|
|
NETLBL_SECATTR_DOMAIN | NETLBL_SECATTR_MLS_LVL;
|
|
return smk_netlbl_mls(smack_cipso_direct, skp->smk_known,
|
|
&skp->smk_netlabel, strlen(skp->smk_known));
|
|
}
|
|
|
|
/**
|
|
* init_smk_fs - get the smackfs superblock
|
|
*
|
|
* register the smackfs
|
|
*
|
|
* Do not register smackfs if Smack wasn't enabled
|
|
* on boot. We can not put this method normally under the
|
|
* smack_init() code path since the security subsystem get
|
|
* initialized before the vfs caches.
|
|
*
|
|
* Returns true if we were not chosen on boot or if
|
|
* we were chosen and filesystem registration succeeded.
|
|
*/
|
|
static int __init init_smk_fs(void)
|
|
{
|
|
int err;
|
|
int rc;
|
|
|
|
if (!security_module_enable(&smack_ops))
|
|
return 0;
|
|
|
|
err = register_filesystem(&smk_fs_type);
|
|
if (!err) {
|
|
smackfs_mount = kern_mount(&smk_fs_type);
|
|
if (IS_ERR(smackfs_mount)) {
|
|
printk(KERN_ERR "smackfs: could not mount!\n");
|
|
err = PTR_ERR(smackfs_mount);
|
|
smackfs_mount = NULL;
|
|
}
|
|
}
|
|
|
|
smk_cipso_doi();
|
|
smk_unlbl_ambient(NULL);
|
|
|
|
rc = smk_preset_netlabel(&smack_known_floor);
|
|
if (err == 0 && rc < 0)
|
|
err = rc;
|
|
rc = smk_preset_netlabel(&smack_known_hat);
|
|
if (err == 0 && rc < 0)
|
|
err = rc;
|
|
rc = smk_preset_netlabel(&smack_known_huh);
|
|
if (err == 0 && rc < 0)
|
|
err = rc;
|
|
rc = smk_preset_netlabel(&smack_known_invalid);
|
|
if (err == 0 && rc < 0)
|
|
err = rc;
|
|
rc = smk_preset_netlabel(&smack_known_star);
|
|
if (err == 0 && rc < 0)
|
|
err = rc;
|
|
rc = smk_preset_netlabel(&smack_known_web);
|
|
if (err == 0 && rc < 0)
|
|
err = rc;
|
|
|
|
return err;
|
|
}
|
|
|
|
__initcall(init_smk_fs);
|