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(). ... --- fs/ceph/acl.c | 263 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 263 insertions(+) create mode 100644 fs/ceph/acl.c (limited to 'fs/ceph/acl.c') diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c new file mode 100644 index 000000000..6945a938d --- /dev/null +++ b/fs/ceph/acl.c @@ -0,0 +1,263 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/fs/ceph/acl.c + * + * Copyright (C) 2013 Guangliang Zhao, + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "super.h" + +static inline void ceph_set_cached_acl(struct inode *inode, + int type, struct posix_acl *acl) +{ + struct ceph_inode_info *ci = ceph_inode(inode); + + spin_lock(&ci->i_ceph_lock); + if (__ceph_caps_issued_mask_metric(ci, CEPH_CAP_XATTR_SHARED, 0)) + set_cached_acl(inode, type, acl); + else + forget_cached_acl(inode, type); + spin_unlock(&ci->i_ceph_lock); +} + +struct posix_acl *ceph_get_acl(struct inode *inode, int type, bool rcu) +{ + int size; + unsigned int retry_cnt = 0; + const char *name; + char *value = NULL; + struct posix_acl *acl; + + if (rcu) + return ERR_PTR(-ECHILD); + + switch (type) { + case ACL_TYPE_ACCESS: + name = XATTR_NAME_POSIX_ACL_ACCESS; + break; + case ACL_TYPE_DEFAULT: + name = XATTR_NAME_POSIX_ACL_DEFAULT; + break; + default: + BUG(); + } + +retry: + size = __ceph_getxattr(inode, name, "", 0); + if (size > 0) { + value = kzalloc(size, GFP_NOFS); + if (!value) + return ERR_PTR(-ENOMEM); + size = __ceph_getxattr(inode, name, value, size); + } + + if (size == -ERANGE && retry_cnt < 10) { + retry_cnt++; + kfree(value); + value = NULL; + goto retry; + } + + if (size > 0) { + acl = posix_acl_from_xattr(&init_user_ns, value, size); + } else if (size == -ENODATA || size == 0) { + acl = NULL; + } else { + pr_err_ratelimited("get acl %llx.%llx failed, err=%d\n", + ceph_vinop(inode), size); + acl = ERR_PTR(-EIO); + } + + kfree(value); + + if (!IS_ERR(acl)) + ceph_set_cached_acl(inode, type, acl); + + return acl; +} + +int ceph_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, + struct posix_acl *acl, int type) +{ + int ret = 0, size = 0; + const char *name = NULL; + char *value = NULL; + struct iattr newattrs; + struct inode *inode = d_inode(dentry); + struct timespec64 old_ctime = inode->i_ctime; + umode_t new_mode = inode->i_mode, old_mode = inode->i_mode; + + if (ceph_snap(inode) != CEPH_NOSNAP) { + ret = -EROFS; + goto out; + } + + switch (type) { + case ACL_TYPE_ACCESS: + name = XATTR_NAME_POSIX_ACL_ACCESS; + if (acl) { + ret = posix_acl_update_mode(&nop_mnt_idmap, inode, + &new_mode, &acl); + if (ret) + goto out; + } + break; + case ACL_TYPE_DEFAULT: + if (!S_ISDIR(inode->i_mode)) { + ret = acl ? -EINVAL : 0; + goto out; + } + name = XATTR_NAME_POSIX_ACL_DEFAULT; + break; + default: + ret = -EINVAL; + goto out; + } + + if (acl) { + size = posix_acl_xattr_size(acl->a_count); + value = kmalloc(size, GFP_NOFS); + if (!value) { + ret = -ENOMEM; + goto out; + } + + ret = posix_acl_to_xattr(&init_user_ns, acl, value, size); + if (ret < 0) + goto out_free; + } + + if (new_mode != old_mode) { + newattrs.ia_ctime = current_time(inode); + newattrs.ia_mode = new_mode; + newattrs.ia_valid = ATTR_MODE | ATTR_CTIME; + ret = __ceph_setattr(inode, &newattrs); + if (ret) + goto out_free; + } + + ret = __ceph_setxattr(inode, name, value, size, 0); + if (ret) { + if (new_mode != old_mode) { + newattrs.ia_ctime = old_ctime; + newattrs.ia_mode = old_mode; + newattrs.ia_valid = ATTR_MODE | ATTR_CTIME; + __ceph_setattr(inode, &newattrs); + } + goto out_free; + } + + ceph_set_cached_acl(inode, type, acl); + +out_free: + kfree(value); +out: + return ret; +} + +int ceph_pre_init_acls(struct inode *dir, umode_t *mode, + struct ceph_acl_sec_ctx *as_ctx) +{ + struct posix_acl *acl, *default_acl; + size_t val_size1 = 0, val_size2 = 0; + struct ceph_pagelist *pagelist = NULL; + void *tmp_buf = NULL; + int err; + + err = posix_acl_create(dir, mode, &default_acl, &acl); + if (err) + return err; + + if (acl) { + err = posix_acl_equiv_mode(acl, mode); + if (err < 0) + goto out_err; + if (err == 0) { + posix_acl_release(acl); + acl = NULL; + } + } + + if (!default_acl && !acl) + return 0; + + if (acl) + val_size1 = posix_acl_xattr_size(acl->a_count); + if (default_acl) + val_size2 = posix_acl_xattr_size(default_acl->a_count); + + err = -ENOMEM; + tmp_buf = kmalloc(max(val_size1, val_size2), GFP_KERNEL); + if (!tmp_buf) + goto out_err; + pagelist = ceph_pagelist_alloc(GFP_KERNEL); + if (!pagelist) + goto out_err; + + err = ceph_pagelist_reserve(pagelist, PAGE_SIZE); + if (err) + goto out_err; + + ceph_pagelist_encode_32(pagelist, acl && default_acl ? 2 : 1); + + if (acl) { + size_t len = strlen(XATTR_NAME_POSIX_ACL_ACCESS); + err = ceph_pagelist_reserve(pagelist, len + val_size1 + 8); + if (err) + goto out_err; + ceph_pagelist_encode_string(pagelist, XATTR_NAME_POSIX_ACL_ACCESS, + len); + err = posix_acl_to_xattr(&init_user_ns, acl, + tmp_buf, val_size1); + if (err < 0) + goto out_err; + ceph_pagelist_encode_32(pagelist, val_size1); + ceph_pagelist_append(pagelist, tmp_buf, val_size1); + } + if (default_acl) { + size_t len = strlen(XATTR_NAME_POSIX_ACL_DEFAULT); + err = ceph_pagelist_reserve(pagelist, len + val_size2 + 8); + if (err) + goto out_err; + ceph_pagelist_encode_string(pagelist, + XATTR_NAME_POSIX_ACL_DEFAULT, len); + err = posix_acl_to_xattr(&init_user_ns, default_acl, + tmp_buf, val_size2); + if (err < 0) + goto out_err; + ceph_pagelist_encode_32(pagelist, val_size2); + ceph_pagelist_append(pagelist, tmp_buf, val_size2); + } + + kfree(tmp_buf); + + as_ctx->acl = acl; + as_ctx->default_acl = default_acl; + as_ctx->pagelist = pagelist; + return 0; + +out_err: + posix_acl_release(acl); + posix_acl_release(default_acl); + kfree(tmp_buf); + if (pagelist) + ceph_pagelist_release(pagelist); + return err; +} + +void ceph_init_inode_acls(struct inode *inode, struct ceph_acl_sec_ctx *as_ctx) +{ + if (!inode) + return; + ceph_set_cached_acl(inode, ACL_TYPE_ACCESS, as_ctx->acl); + ceph_set_cached_acl(inode, ACL_TYPE_DEFAULT, as_ctx->default_acl); +} -- cgit v1.2.3