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(). ... --- kernel/audit.h | 347 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 347 insertions(+) create mode 100644 kernel/audit.h (limited to 'kernel/audit.h') diff --git a/kernel/audit.h b/kernel/audit.h new file mode 100644 index 000000000..c57b008b9 --- /dev/null +++ b/kernel/audit.h @@ -0,0 +1,347 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* audit -- definition of audit_context structure and supporting types + * + * Copyright 2003-2004 Red Hat, Inc. + * Copyright 2005 Hewlett-Packard Development Company, L.P. + * Copyright 2005 IBM Corporation + */ + +#ifndef _KERNEL_AUDIT_H_ +#define _KERNEL_AUDIT_H_ + +#include +#include +#include +#include +#include +#include // struct open_how + +/* AUDIT_NAMES is the number of slots we reserve in the audit_context + * for saving names from getname(). If we get more names we will allocate + * a name dynamically and also add those to the list anchored by names_list. */ +#define AUDIT_NAMES 5 + +/* At task start time, the audit_state is set in the audit_context using + a per-task filter. At syscall entry, the audit_state is augmented by + the syscall filter. */ +enum audit_state { + AUDIT_STATE_DISABLED, /* Do not create per-task audit_context. + * No syscall-specific audit records can + * be generated. */ + AUDIT_STATE_BUILD, /* Create the per-task audit_context, + * and fill it in at syscall + * entry time. This makes a full + * syscall record available if some + * other part of the kernel decides it + * should be recorded. */ + AUDIT_STATE_RECORD /* Create the per-task audit_context, + * always fill it in at syscall entry + * time, and always write out the audit + * record at syscall exit time. */ +}; + +/* Rule lists */ +struct audit_watch; +struct audit_fsnotify_mark; +struct audit_tree; +struct audit_chunk; + +struct audit_entry { + struct list_head list; + struct rcu_head rcu; + struct audit_krule rule; +}; + +struct audit_cap_data { + kernel_cap_t permitted; + kernel_cap_t inheritable; + union { + unsigned int fE; /* effective bit of file cap */ + kernel_cap_t effective; /* effective set of process */ + }; + kernel_cap_t ambient; + kuid_t rootid; +}; + +/* When fs/namei.c:getname() is called, we store the pointer in name and bump + * the refcnt in the associated filename struct. + * + * Further, in fs/namei.c:path_lookup() we store the inode and device. + */ +struct audit_names { + struct list_head list; /* audit_context->names_list */ + + struct filename *name; + int name_len; /* number of chars to log */ + bool hidden; /* don't log this record */ + + unsigned long ino; + dev_t dev; + umode_t mode; + kuid_t uid; + kgid_t gid; + dev_t rdev; + u32 osid; + struct audit_cap_data fcap; + unsigned int fcap_ver; + unsigned char type; /* record type */ + /* + * This was an allocated audit_names and not from the array of + * names allocated in the task audit context. Thus this name + * should be freed on syscall exit. + */ + bool should_free; +}; + +struct audit_proctitle { + int len; /* length of the cmdline field. */ + char *value; /* the cmdline field */ +}; + +/* The per-task audit context. */ +struct audit_context { + int dummy; /* must be the first element */ + enum { + AUDIT_CTX_UNUSED, /* audit_context is currently unused */ + AUDIT_CTX_SYSCALL, /* in use by syscall */ + AUDIT_CTX_URING, /* in use by io_uring */ + } context; + enum audit_state state, current_state; + unsigned int serial; /* serial number for record */ + int major; /* syscall number */ + int uring_op; /* uring operation */ + struct timespec64 ctime; /* time of syscall entry */ + unsigned long argv[4]; /* syscall arguments */ + long return_code;/* syscall return code */ + u64 prio; + int return_valid; /* return code is valid */ + /* + * The names_list is the list of all audit_names collected during this + * syscall. The first AUDIT_NAMES entries in the names_list will + * actually be from the preallocated_names array for performance + * reasons. Except during allocation they should never be referenced + * through the preallocated_names array and should only be found/used + * by running the names_list. + */ + struct audit_names preallocated_names[AUDIT_NAMES]; + int name_count; /* total records in names_list */ + struct list_head names_list; /* struct audit_names->list anchor */ + char *filterkey; /* key for rule that triggered record */ + struct path pwd; + struct audit_aux_data *aux; + struct audit_aux_data *aux_pids; + struct sockaddr_storage *sockaddr; + size_t sockaddr_len; + /* Save things to print about task_struct */ + pid_t ppid; + kuid_t uid, euid, suid, fsuid; + kgid_t gid, egid, sgid, fsgid; + unsigned long personality; + int arch; + + pid_t target_pid; + kuid_t target_auid; + kuid_t target_uid; + unsigned int target_sessionid; + u32 target_sid; + char target_comm[TASK_COMM_LEN]; + + struct audit_tree_refs *trees, *first_trees; + struct list_head killed_trees; + int tree_count; + + int type; + union { + struct { + int nargs; + long args[6]; + } socketcall; + struct { + kuid_t uid; + kgid_t gid; + umode_t mode; + u32 osid; + int has_perm; + uid_t perm_uid; + gid_t perm_gid; + umode_t perm_mode; + unsigned long qbytes; + } ipc; + struct { + mqd_t mqdes; + struct mq_attr mqstat; + } mq_getsetattr; + struct { + mqd_t mqdes; + int sigev_signo; + } mq_notify; + struct { + mqd_t mqdes; + size_t msg_len; + unsigned int msg_prio; + struct timespec64 abs_timeout; + } mq_sendrecv; + struct { + int oflag; + umode_t mode; + struct mq_attr attr; + } mq_open; + struct { + pid_t pid; + struct audit_cap_data cap; + } capset; + struct { + int fd; + int flags; + } mmap; + struct open_how openat2; + struct { + int argc; + } execve; + struct { + char *name; + } module; + struct { + struct audit_ntp_data ntp_data; + struct timespec64 tk_injoffset; + } time; + }; + int fds[2]; + struct audit_proctitle proctitle; +}; + +extern bool audit_ever_enabled; + +extern void audit_log_session_info(struct audit_buffer *ab); + +extern int auditd_test_task(struct task_struct *task); + +#define AUDIT_INODE_BUCKETS 32 +extern struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS]; + +static inline int audit_hash_ino(u32 ino) +{ + return (ino & (AUDIT_INODE_BUCKETS-1)); +} + +/* Indicates that audit should log the full pathname. */ +#define AUDIT_NAME_FULL -1 + +extern int audit_match_class(int class, unsigned syscall); +extern int audit_comparator(const u32 left, const u32 op, const u32 right); +extern int audit_uid_comparator(kuid_t left, u32 op, kuid_t right); +extern int audit_gid_comparator(kgid_t left, u32 op, kgid_t right); +extern int parent_len(const char *path); +extern int audit_compare_dname_path(const struct qstr *dname, const char *path, int plen); +extern struct sk_buff *audit_make_reply(int seq, int type, int done, int multi, + const void *payload, int size); +extern void audit_panic(const char *message); + +struct audit_netlink_list { + __u32 portid; + struct net *net; + struct sk_buff_head q; +}; + +int audit_send_list_thread(void *_dest); + +extern struct mutex audit_filter_mutex; +extern int audit_del_rule(struct audit_entry *entry); +extern void audit_free_rule_rcu(struct rcu_head *head); +extern struct list_head audit_filter_list[]; + +extern struct audit_entry *audit_dupe_rule(struct audit_krule *old); + +extern void audit_log_d_path_exe(struct audit_buffer *ab, + struct mm_struct *mm); + +extern struct tty_struct *audit_get_tty(void); +extern void audit_put_tty(struct tty_struct *tty); + +/* audit watch/mark/tree functions */ +#ifdef CONFIG_AUDITSYSCALL +extern unsigned int audit_serial(void); +extern int auditsc_get_stamp(struct audit_context *ctx, + struct timespec64 *t, unsigned int *serial); + +extern void audit_put_watch(struct audit_watch *watch); +extern void audit_get_watch(struct audit_watch *watch); +extern int audit_to_watch(struct audit_krule *krule, char *path, int len, + u32 op); +extern int audit_add_watch(struct audit_krule *krule, struct list_head **list); +extern void audit_remove_watch_rule(struct audit_krule *krule); +extern char *audit_watch_path(struct audit_watch *watch); +extern int audit_watch_compare(struct audit_watch *watch, unsigned long ino, + dev_t dev); + +extern struct audit_fsnotify_mark *audit_alloc_mark(struct audit_krule *krule, + char *pathname, int len); +extern char *audit_mark_path(struct audit_fsnotify_mark *mark); +extern void audit_remove_mark(struct audit_fsnotify_mark *audit_mark); +extern void audit_remove_mark_rule(struct audit_krule *krule); +extern int audit_mark_compare(struct audit_fsnotify_mark *mark, + unsigned long ino, dev_t dev); +extern int audit_dupe_exe(struct audit_krule *new, struct audit_krule *old); +extern int audit_exe_compare(struct task_struct *tsk, + struct audit_fsnotify_mark *mark); + +extern struct audit_chunk *audit_tree_lookup(const struct inode *inode); +extern void audit_put_chunk(struct audit_chunk *chunk); +extern bool audit_tree_match(struct audit_chunk *chunk, + struct audit_tree *tree); +extern int audit_make_tree(struct audit_krule *rule, char *pathname, u32 op); +extern int audit_add_tree_rule(struct audit_krule *rule); +extern int audit_remove_tree_rule(struct audit_krule *rule); +extern void audit_trim_trees(void); +extern int audit_tag_tree(char *old, char *new); +extern const char *audit_tree_path(struct audit_tree *tree); +extern void audit_put_tree(struct audit_tree *tree); +extern void audit_kill_trees(struct audit_context *context); + +extern int audit_signal_info_syscall(struct task_struct *t); +extern void audit_filter_inodes(struct task_struct *tsk, + struct audit_context *ctx); +extern struct list_head *audit_killed_trees(void); +#else /* CONFIG_AUDITSYSCALL */ +#define auditsc_get_stamp(c, t, s) 0 +#define audit_put_watch(w) do { } while (0) +#define audit_get_watch(w) do { } while (0) +#define audit_to_watch(k, p, l, o) (-EINVAL) +#define audit_add_watch(k, l) (-EINVAL) +#define audit_remove_watch_rule(k) BUG() +#define audit_watch_path(w) "" +#define audit_watch_compare(w, i, d) 0 + +#define audit_alloc_mark(k, p, l) (ERR_PTR(-EINVAL)) +#define audit_mark_path(m) "" +#define audit_remove_mark(m) do { } while (0) +#define audit_remove_mark_rule(k) do { } while (0) +#define audit_mark_compare(m, i, d) 0 +#define audit_exe_compare(t, m) (-EINVAL) +#define audit_dupe_exe(n, o) (-EINVAL) + +#define audit_remove_tree_rule(rule) BUG() +#define audit_add_tree_rule(rule) -EINVAL +#define audit_make_tree(rule, str, op) -EINVAL +#define audit_trim_trees() do { } while (0) +#define audit_put_tree(tree) do { } while (0) +#define audit_tag_tree(old, new) -EINVAL +#define audit_tree_path(rule) "" /* never called */ +#define audit_kill_trees(context) BUG() + +static inline int audit_signal_info_syscall(struct task_struct *t) +{ + return 0; +} + +#define audit_filter_inodes(t, c) AUDIT_STATE_DISABLED +#endif /* CONFIG_AUDITSYSCALL */ + +extern char *audit_unpack_string(void **bufp, size_t *remain, size_t len); + +extern int audit_filter(int msgtype, unsigned int listtype); + +extern void audit_ctl_lock(void); +extern void audit_ctl_unlock(void); + +#endif -- cgit v1.2.3