c6d3aaa4e3
Modify SELinux to dynamically discover class and permission values upon policy load, based on the dynamic object class/perm discovery logic from libselinux. A mapping is created between kernel-private class and permission indices used outside the security server and the policy values used within the security server. The mappings are only applied upon kernel-internal computations; similar mappings for the private indices of userspace object managers is handled on a per-object manager basis by the userspace AVC. The interfaces for compute_av and transition_sid are split for kernel vs. userspace; the userspace functions are distinguished by a _user suffix. The kernel-private class indices are no longer tied to the policy values and thus do not need to skip indices for userspace classes; thus the kernel class index values are compressed. The flask.h definitions were regenerated by deleting the userspace classes from refpolicy's definitions and then regenerating the headers. Going forward, we can just maintain the flask.h, av_permissions.h, and classmap.h definitions separately from policy as they are no longer tied to the policy values. The next patch introduces a utility to automate generation of flask.h and av_permissions.h from the classmap.h definitions. The older kernel class and permission string tables are removed and replaced by a single security class mapping table that is walked at policy load to generate the mapping. The old kernel class validation logic is completely replaced by the mapping logic. The handle unknown logic is reworked. reject_unknown=1 is handled when the mappings are computed at policy load time, similar to the old handling by the class validation logic. allow_unknown=1 is handled when computing and mapping decisions - if the permission was not able to be mapped (i.e. undefined, mapped to zero), then it is automatically added to the allowed vector. If the class was not able to be mapped (i.e. undefined, mapped to zero), then all permissions are allowed for it if allow_unknown=1. avc_audit leverages the new security class mapping table to lookup the class and permission names from the kernel-private indices. The mdp program is updated to use the new table when generating the class definitions and allow rules for a minimal boot policy for the kernel. It should be noted that this policy will not include any userspace classes, nor will its policy index values for the kernel classes correspond with the ones in refpolicy (they will instead match the kernel-private indices). Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
91 lines
4.7 KiB
C
91 lines
4.7 KiB
C
/* This file is automatically generated. Do not edit. */
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#ifndef _SELINUX_FLASK_H_
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#define _SELINUX_FLASK_H_
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/*
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* Security object class definitions
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*/
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#define SECCLASS_SECURITY 1
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#define SECCLASS_PROCESS 2
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#define SECCLASS_SYSTEM 3
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#define SECCLASS_CAPABILITY 4
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#define SECCLASS_FILESYSTEM 5
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#define SECCLASS_FILE 6
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#define SECCLASS_DIR 7
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#define SECCLASS_FD 8
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#define SECCLASS_LNK_FILE 9
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#define SECCLASS_CHR_FILE 10
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#define SECCLASS_BLK_FILE 11
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#define SECCLASS_SOCK_FILE 12
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#define SECCLASS_FIFO_FILE 13
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#define SECCLASS_SOCKET 14
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#define SECCLASS_TCP_SOCKET 15
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#define SECCLASS_UDP_SOCKET 16
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#define SECCLASS_RAWIP_SOCKET 17
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#define SECCLASS_NODE 18
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#define SECCLASS_NETIF 19
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#define SECCLASS_NETLINK_SOCKET 20
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#define SECCLASS_PACKET_SOCKET 21
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#define SECCLASS_KEY_SOCKET 22
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#define SECCLASS_UNIX_STREAM_SOCKET 23
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#define SECCLASS_UNIX_DGRAM_SOCKET 24
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#define SECCLASS_SEM 25
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#define SECCLASS_MSG 26
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#define SECCLASS_MSGQ 27
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#define SECCLASS_SHM 28
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#define SECCLASS_IPC 29
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#define SECCLASS_NETLINK_ROUTE_SOCKET 30
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#define SECCLASS_NETLINK_FIREWALL_SOCKET 31
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#define SECCLASS_NETLINK_TCPDIAG_SOCKET 32
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#define SECCLASS_NETLINK_NFLOG_SOCKET 33
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#define SECCLASS_NETLINK_XFRM_SOCKET 34
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#define SECCLASS_NETLINK_SELINUX_SOCKET 35
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#define SECCLASS_NETLINK_AUDIT_SOCKET 36
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#define SECCLASS_NETLINK_IP6FW_SOCKET 37
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#define SECCLASS_NETLINK_DNRT_SOCKET 38
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#define SECCLASS_ASSOCIATION 39
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#define SECCLASS_NETLINK_KOBJECT_UEVENT_SOCKET 40
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#define SECCLASS_APPLETALK_SOCKET 41
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#define SECCLASS_PACKET 42
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#define SECCLASS_KEY 43
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#define SECCLASS_DCCP_SOCKET 44
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#define SECCLASS_MEMPROTECT 45
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#define SECCLASS_PEER 46
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#define SECCLASS_CAPABILITY2 47
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#define SECCLASS_KERNEL_SERVICE 48
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#define SECCLASS_TUN_SOCKET 49
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/*
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* Security identifier indices for initial entities
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*/
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#define SECINITSID_KERNEL 1
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#define SECINITSID_SECURITY 2
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#define SECINITSID_UNLABELED 3
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#define SECINITSID_FS 4
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#define SECINITSID_FILE 5
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#define SECINITSID_FILE_LABELS 6
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#define SECINITSID_INIT 7
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#define SECINITSID_ANY_SOCKET 8
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#define SECINITSID_PORT 9
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#define SECINITSID_NETIF 10
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#define SECINITSID_NETMSG 11
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#define SECINITSID_NODE 12
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#define SECINITSID_IGMP_PACKET 13
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#define SECINITSID_ICMP_SOCKET 14
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#define SECINITSID_TCP_SOCKET 15
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#define SECINITSID_SYSCTL_MODPROBE 16
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#define SECINITSID_SYSCTL 17
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#define SECINITSID_SYSCTL_FS 18
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#define SECINITSID_SYSCTL_KERNEL 19
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#define SECINITSID_SYSCTL_NET 20
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#define SECINITSID_SYSCTL_NET_UNIX 21
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#define SECINITSID_SYSCTL_VM 22
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#define SECINITSID_SYSCTL_DEV 23
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#define SECINITSID_KMOD 24
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#define SECINITSID_POLICY 25
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#define SECINITSID_SCMP_PACKET 26
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#define SECINITSID_DEVNULL 27
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#define SECINITSID_NUM 27
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#endif
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