From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- security/apparmor/include/perms.h | 219 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 219 insertions(+) create mode 100644 security/apparmor/include/perms.h (limited to 'security/apparmor/include/perms.h') diff --git a/security/apparmor/include/perms.h b/security/apparmor/include/perms.h new file mode 100644 index 000000000..797a7a006 --- /dev/null +++ b/security/apparmor/include/perms.h @@ -0,0 +1,219 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * AppArmor security module + * + * This file contains AppArmor basic permission sets definitions. + * + * Copyright 2017 Canonical Ltd. + */ + +#ifndef __AA_PERM_H +#define __AA_PERM_H + +#include +#include "label.h" + +#define AA_MAY_EXEC MAY_EXEC +#define AA_MAY_WRITE MAY_WRITE +#define AA_MAY_READ MAY_READ +#define AA_MAY_APPEND MAY_APPEND + +#define AA_MAY_CREATE 0x0010 +#define AA_MAY_DELETE 0x0020 +#define AA_MAY_OPEN 0x0040 +#define AA_MAY_RENAME 0x0080 /* pair */ + +#define AA_MAY_SETATTR 0x0100 /* meta write */ +#define AA_MAY_GETATTR 0x0200 /* meta read */ +#define AA_MAY_SETCRED 0x0400 /* security cred/attr */ +#define AA_MAY_GETCRED 0x0800 + +#define AA_MAY_CHMOD 0x1000 /* pair */ +#define AA_MAY_CHOWN 0x2000 /* pair */ +#define AA_MAY_CHGRP 0x4000 /* pair */ +#define AA_MAY_LOCK 0x8000 /* LINK_SUBSET overlaid */ + +#define AA_EXEC_MMAP 0x00010000 +#define AA_MAY_MPROT 0x00020000 /* extend conditions */ +#define AA_MAY_LINK 0x00040000 /* pair */ +#define AA_MAY_SNAPSHOT 0x00080000 /* pair */ + +#define AA_MAY_DELEGATE +#define AA_CONT_MATCH 0x08000000 + +#define AA_MAY_STACK 0x10000000 +#define AA_MAY_ONEXEC 0x20000000 /* either stack or change_profile */ +#define AA_MAY_CHANGE_PROFILE 0x40000000 +#define AA_MAY_CHANGEHAT 0x80000000 + +#define AA_LINK_SUBSET AA_MAY_LOCK /* overlaid */ + + +#define PERMS_CHRS_MASK (MAY_READ | MAY_WRITE | AA_MAY_CREATE | \ + AA_MAY_DELETE | AA_MAY_LINK | AA_MAY_LOCK | \ + AA_MAY_EXEC | AA_EXEC_MMAP | AA_MAY_APPEND) + +#define PERMS_NAMES_MASK (PERMS_CHRS_MASK | AA_MAY_OPEN | AA_MAY_RENAME | \ + AA_MAY_SETATTR | AA_MAY_GETATTR | AA_MAY_SETCRED | \ + AA_MAY_GETCRED | AA_MAY_CHMOD | AA_MAY_CHOWN | \ + AA_MAY_CHGRP | AA_MAY_MPROT | AA_MAY_SNAPSHOT | \ + AA_MAY_STACK | AA_MAY_ONEXEC | \ + AA_MAY_CHANGE_PROFILE | AA_MAY_CHANGEHAT) + +extern const char aa_file_perm_chrs[]; +extern const char *aa_file_perm_names[]; + +struct aa_perms { + u32 allow; + u32 deny; /* explicit deny, or conflict if allow also set */ + + u32 subtree; /* allow perm on full subtree only when allow is set */ + u32 cond; /* set only when ~allow and ~deny */ + + u32 kill; /* set only when ~allow | deny */ + u32 complain; /* accumulates only used when ~allow & ~deny */ + u32 prompt; /* accumulates only used when ~allow & ~deny */ + + u32 audit; /* set only when allow is set */ + u32 quiet; /* set only when ~allow | deny */ + u32 hide; /* set only when ~allow | deny */ + + + u32 xindex; + u32 tag; /* tag string index, if present */ + u32 label; /* label string index, if present */ +}; + +/* + * Indexes are broken into a 24 bit index and 8 bit flag. + * For the index to be valid there must be a value in the flag + */ +#define AA_INDEX_MASK 0x00ffffff +#define AA_INDEX_FLAG_MASK 0xff000000 +#define AA_INDEX_NONE 0 + +#define ALL_PERMS_MASK 0xffffffff +extern struct aa_perms nullperms; +extern struct aa_perms allperms; + +/** + * aa_perms_accum_raw - accumulate perms with out masking off overlapping perms + * @accum - perms struct to accumulate into + * @addend - perms struct to add to @accum + */ +static inline void aa_perms_accum_raw(struct aa_perms *accum, + struct aa_perms *addend) +{ + accum->deny |= addend->deny; + accum->allow &= addend->allow & ~addend->deny; + accum->audit |= addend->audit & addend->allow; + accum->quiet &= addend->quiet & ~addend->allow; + accum->kill |= addend->kill & ~addend->allow; + accum->complain |= addend->complain & ~addend->allow & ~addend->deny; + accum->cond |= addend->cond & ~addend->allow & ~addend->deny; + accum->hide &= addend->hide & ~addend->allow; + accum->prompt |= addend->prompt & ~addend->allow & ~addend->deny; + accum->subtree |= addend->subtree & ~addend->deny; + + if (!accum->xindex) + accum->xindex = addend->xindex; + if (!accum->tag) + accum->tag = addend->tag; + if (!accum->label) + accum->label = addend->label; +} + +/** + * aa_perms_accum - accumulate perms, masking off overlapping perms + * @accum - perms struct to accumulate into + * @addend - perms struct to add to @accum + */ +static inline void aa_perms_accum(struct aa_perms *accum, + struct aa_perms *addend) +{ + accum->deny |= addend->deny; + accum->allow &= addend->allow & ~accum->deny; + accum->audit |= addend->audit & accum->allow; + accum->quiet &= addend->quiet & ~accum->allow; + accum->kill |= addend->kill & ~accum->allow; + accum->complain |= addend->complain & ~accum->allow & ~accum->deny; + accum->cond |= addend->cond & ~accum->allow & ~accum->deny; + accum->hide &= addend->hide & ~accum->allow; + accum->prompt |= addend->prompt & ~accum->allow & ~accum->deny; + accum->subtree &= addend->subtree & ~accum->deny; + + if (!accum->xindex) + accum->xindex = addend->xindex; + if (!accum->tag) + accum->tag = addend->tag; + if (!accum->label) + accum->label = addend->label; +} + +#define xcheck(FN1, FN2) \ +({ \ + int e, error = FN1; \ + e = FN2; \ + if (e) \ + error = e; \ + error; \ +}) + + +/* + * TODO: update for labels pointing to labels instead of profiles + * TODO: optimize the walk, currently does subwalk of L2 for each P in L1 + * gah this doesn't allow for label compound check!!!! + */ +#define xcheck_ns_profile_profile(P1, P2, FN, args...) \ +({ \ + int ____e = 0; \ + if (P1->ns == P2->ns) \ + ____e = FN((P1), (P2), args); \ + (____e); \ +}) + +#define xcheck_ns_profile_label(P, L, FN, args...) \ +({ \ + struct aa_profile *__p2; \ + fn_for_each((L), __p2, \ + xcheck_ns_profile_profile((P), __p2, (FN), args)); \ +}) + +#define xcheck_ns_labels(L1, L2, FN, args...) \ +({ \ + struct aa_profile *__p1; \ + fn_for_each((L1), __p1, FN(__p1, (L2), args)); \ +}) + +/* Do the cross check but applying FN at the profiles level */ +#define xcheck_labels_profiles(L1, L2, FN, args...) \ + xcheck_ns_labels((L1), (L2), xcheck_ns_profile_label, (FN), args) + +#define xcheck_labels(L1, L2, P, FN1, FN2) \ + xcheck(fn_for_each((L1), (P), (FN1)), fn_for_each((L2), (P), (FN2))) + + +extern struct aa_perms default_perms; + + +void aa_perm_mask_to_str(char *str, size_t str_size, const char *chrs, + u32 mask); +void aa_audit_perm_names(struct audit_buffer *ab, const char * const *names, + u32 mask); +void aa_audit_perm_mask(struct audit_buffer *ab, u32 mask, const char *chrs, + u32 chrsmask, const char * const *names, u32 namesmask); +void aa_apply_modes_to_perms(struct aa_profile *profile, + struct aa_perms *perms); +void aa_perms_accum(struct aa_perms *accum, struct aa_perms *addend); +void aa_perms_accum_raw(struct aa_perms *accum, struct aa_perms *addend); +void aa_profile_match_label(struct aa_profile *profile, + struct aa_ruleset *rules, struct aa_label *label, + int type, u32 request, struct aa_perms *perms); +int aa_profile_label_perm(struct aa_profile *profile, struct aa_profile *target, + u32 request, int type, u32 *deny, + struct common_audit_data *sa); +int aa_check_perms(struct aa_profile *profile, struct aa_perms *perms, + u32 request, struct common_audit_data *sa, + void (*cb)(struct audit_buffer *, void *)); +#endif /* __AA_PERM_H */ -- cgit v1.2.3