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/hpfs/inode.c | 318 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 318 insertions(+) create mode 100644 fs/hpfs/inode.c (limited to 'fs/hpfs/inode.c') diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c new file mode 100644 index 000000000..e50e92a42 --- /dev/null +++ b/fs/hpfs/inode.c @@ -0,0 +1,318 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * linux/fs/hpfs/inode.c + * + * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999 + * + * inode VFS functions + */ + +#include +#include +#include "hpfs_fn.h" + +void hpfs_init_inode(struct inode *i) +{ + struct super_block *sb = i->i_sb; + struct hpfs_inode_info *hpfs_inode = hpfs_i(i); + + i->i_uid = hpfs_sb(sb)->sb_uid; + i->i_gid = hpfs_sb(sb)->sb_gid; + i->i_mode = hpfs_sb(sb)->sb_mode; + i->i_size = -1; + i->i_blocks = -1; + + hpfs_inode->i_dno = 0; + hpfs_inode->i_n_secs = 0; + hpfs_inode->i_file_sec = 0; + hpfs_inode->i_disk_sec = 0; + hpfs_inode->i_dpos = 0; + hpfs_inode->i_dsubdno = 0; + hpfs_inode->i_ea_mode = 0; + hpfs_inode->i_ea_uid = 0; + hpfs_inode->i_ea_gid = 0; + hpfs_inode->i_ea_size = 0; + + hpfs_inode->i_rddir_off = NULL; + hpfs_inode->i_dirty = 0; + + i->i_ctime.tv_sec = i->i_ctime.tv_nsec = 0; + i->i_mtime.tv_sec = i->i_mtime.tv_nsec = 0; + i->i_atime.tv_sec = i->i_atime.tv_nsec = 0; +} + +void hpfs_read_inode(struct inode *i) +{ + struct buffer_head *bh; + struct fnode *fnode; + struct super_block *sb = i->i_sb; + struct hpfs_inode_info *hpfs_inode = hpfs_i(i); + void *ea; + int ea_size; + + if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) { + /*i->i_mode |= S_IFREG; + i->i_mode &= ~0111; + i->i_op = &hpfs_file_iops; + i->i_fop = &hpfs_file_ops; + clear_nlink(i);*/ + make_bad_inode(i); + return; + } + if (hpfs_sb(i->i_sb)->sb_eas) { + if ((ea = hpfs_get_ea(i->i_sb, fnode, "UID", &ea_size))) { + if (ea_size == 2) { + i_uid_write(i, le16_to_cpu(*(__le16*)ea)); + hpfs_inode->i_ea_uid = 1; + } + kfree(ea); + } + if ((ea = hpfs_get_ea(i->i_sb, fnode, "GID", &ea_size))) { + if (ea_size == 2) { + i_gid_write(i, le16_to_cpu(*(__le16*)ea)); + hpfs_inode->i_ea_gid = 1; + } + kfree(ea); + } + if ((ea = hpfs_get_ea(i->i_sb, fnode, "SYMLINK", &ea_size))) { + kfree(ea); + i->i_mode = S_IFLNK | 0777; + i->i_op = &page_symlink_inode_operations; + inode_nohighmem(i); + i->i_data.a_ops = &hpfs_symlink_aops; + set_nlink(i, 1); + i->i_size = ea_size; + i->i_blocks = 1; + brelse(bh); + return; + } + if ((ea = hpfs_get_ea(i->i_sb, fnode, "MODE", &ea_size))) { + int rdev = 0; + umode_t mode = hpfs_sb(sb)->sb_mode; + if (ea_size == 2) { + mode = le16_to_cpu(*(__le16*)ea); + hpfs_inode->i_ea_mode = 1; + } + kfree(ea); + i->i_mode = mode; + if (S_ISBLK(mode) || S_ISCHR(mode)) { + if ((ea = hpfs_get_ea(i->i_sb, fnode, "DEV", &ea_size))) { + if (ea_size == 4) + rdev = le32_to_cpu(*(__le32*)ea); + kfree(ea); + } + } + if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { + brelse(bh); + set_nlink(i, 1); + i->i_size = 0; + i->i_blocks = 1; + init_special_inode(i, mode, + new_decode_dev(rdev)); + return; + } + } + } + if (fnode_is_dir(fnode)) { + int n_dnodes, n_subdirs; + i->i_mode |= S_IFDIR; + i->i_op = &hpfs_dir_iops; + i->i_fop = &hpfs_dir_ops; + hpfs_inode->i_parent_dir = le32_to_cpu(fnode->up); + hpfs_inode->i_dno = le32_to_cpu(fnode->u.external[0].disk_secno); + if (hpfs_sb(sb)->sb_chk >= 2) { + struct buffer_head *bh0; + if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0); + } + n_dnodes = 0; n_subdirs = 0; + hpfs_count_dnodes(i->i_sb, hpfs_inode->i_dno, &n_dnodes, &n_subdirs, NULL); + i->i_blocks = 4 * n_dnodes; + i->i_size = 2048 * n_dnodes; + set_nlink(i, 2 + n_subdirs); + } else { + i->i_mode |= S_IFREG; + if (!hpfs_inode->i_ea_mode) i->i_mode &= ~0111; + i->i_op = &hpfs_file_iops; + i->i_fop = &hpfs_file_ops; + set_nlink(i, 1); + i->i_size = le32_to_cpu(fnode->file_size); + i->i_blocks = ((i->i_size + 511) >> 9) + 1; + i->i_data.a_ops = &hpfs_aops; + hpfs_i(i)->mmu_private = i->i_size; + } + brelse(bh); +} + +static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode) +{ + struct hpfs_inode_info *hpfs_inode = hpfs_i(i); + /*if (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(fnode->acl_size_s)) { + Some unknown structures like ACL may be in fnode, + we'd better not overwrite them + hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 structures", i->i_ino); + } else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) { + __le32 ea; + if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) { + ea = cpu_to_le32(i_uid_read(i)); + hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2); + hpfs_inode->i_ea_uid = 1; + } + if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) { + ea = cpu_to_le32(i_gid_read(i)); + hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2); + hpfs_inode->i_ea_gid = 1; + } + if (!S_ISLNK(i->i_mode)) + if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111)) + | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG)) + && i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333)) + | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) { + ea = cpu_to_le32(i->i_mode); + /* sick, but legal */ + hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2); + hpfs_inode->i_ea_mode = 1; + } + if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) { + ea = cpu_to_le32(new_encode_dev(i->i_rdev)); + hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4); + } + } +} + +void hpfs_write_inode(struct inode *i) +{ + struct hpfs_inode_info *hpfs_inode = hpfs_i(i); + struct inode *parent; + if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return; + if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) { + if (*hpfs_inode->i_rddir_off) + pr_err("write_inode: some position still there\n"); + kfree(hpfs_inode->i_rddir_off); + hpfs_inode->i_rddir_off = NULL; + } + if (!i->i_nlink) { + return; + } + parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir); + if (parent) { + hpfs_inode->i_dirty = 0; + if (parent->i_state & I_NEW) { + hpfs_init_inode(parent); + hpfs_read_inode(parent); + unlock_new_inode(parent); + } + hpfs_write_inode_nolock(i); + iput(parent); + } +} + +void hpfs_write_inode_nolock(struct inode *i) +{ + struct hpfs_inode_info *hpfs_inode = hpfs_i(i); + struct buffer_head *bh; + struct fnode *fnode; + struct quad_buffer_head qbh; + struct hpfs_dirent *de; + if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return; + if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return; + if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) { + if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) { + brelse(bh); + return; + } + } else de = NULL; + if (S_ISREG(i->i_mode)) { + fnode->file_size = cpu_to_le32(i->i_size); + if (de) de->file_size = cpu_to_le32(i->i_size); + } else if (S_ISDIR(i->i_mode)) { + fnode->file_size = cpu_to_le32(0); + if (de) de->file_size = cpu_to_le32(0); + } + hpfs_write_inode_ea(i, fnode); + if (de) { + de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec)); + de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec)); + de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec)); + de->read_only = !(i->i_mode & 0222); + de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size); + hpfs_mark_4buffers_dirty(&qbh); + hpfs_brelse4(&qbh); + } + if (S_ISDIR(i->i_mode)) { + if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) { + de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec)); + de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec)); + de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec)); + de->read_only = !(i->i_mode & 0222); + de->ea_size = cpu_to_le32(/*hpfs_inode->i_ea_size*/0); + de->file_size = cpu_to_le32(0); + hpfs_mark_4buffers_dirty(&qbh); + hpfs_brelse4(&qbh); + } else + hpfs_error(i->i_sb, + "directory %08lx doesn't have '.' entry", + (unsigned long)i->i_ino); + } + mark_buffer_dirty(bh); + brelse(bh); +} + +int hpfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, + struct iattr *attr) +{ + struct inode *inode = d_inode(dentry); + int error = -EINVAL; + + hpfs_lock(inode->i_sb); + if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root) + goto out_unlock; + if ((attr->ia_valid & ATTR_UID) && + from_kuid(&init_user_ns, attr->ia_uid) >= 0x10000) + goto out_unlock; + if ((attr->ia_valid & ATTR_GID) && + from_kgid(&init_user_ns, attr->ia_gid) >= 0x10000) + goto out_unlock; + if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size) + goto out_unlock; + + error = setattr_prepare(&nop_mnt_idmap, dentry, attr); + if (error) + goto out_unlock; + + if ((attr->ia_valid & ATTR_SIZE) && + attr->ia_size != i_size_read(inode)) { + error = inode_newsize_ok(inode, attr->ia_size); + if (error) + goto out_unlock; + + truncate_setsize(inode, attr->ia_size); + hpfs_truncate(inode); + } + + setattr_copy(&nop_mnt_idmap, inode, attr); + + hpfs_write_inode(inode); + + out_unlock: + hpfs_unlock(inode->i_sb); + return error; +} + +void hpfs_write_if_changed(struct inode *inode) +{ + struct hpfs_inode_info *hpfs_inode = hpfs_i(inode); + + if (hpfs_inode->i_dirty) + hpfs_write_inode(inode); +} + +void hpfs_evict_inode(struct inode *inode) +{ + truncate_inode_pages_final(&inode->i_data); + clear_inode(inode); + if (!inode->i_nlink) { + hpfs_lock(inode->i_sb); + hpfs_remove_fnode(inode->i_sb, inode->i_ino); + hpfs_unlock(inode->i_sb); + } +} -- cgit v1.2.3