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/hfsplus/inode.c | 689 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 689 insertions(+) create mode 100644 fs/hfsplus/inode.c (limited to 'fs/hfsplus/inode.c') diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c new file mode 100644 index 000000000..abb91f5fa --- /dev/null +++ b/fs/hfsplus/inode.c @@ -0,0 +1,689 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * linux/fs/hfsplus/inode.c + * + * Copyright (C) 2001 + * Brad Boyer (flar@allandria.com) + * (C) 2003 Ardis Technologies + * + * Inode handling routines + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "hfsplus_fs.h" +#include "hfsplus_raw.h" +#include "xattr.h" + +static int hfsplus_read_folio(struct file *file, struct folio *folio) +{ + return block_read_full_folio(folio, hfsplus_get_block); +} + +static int hfsplus_writepage(struct page *page, struct writeback_control *wbc) +{ + return block_write_full_page(page, hfsplus_get_block, wbc); +} + +static void hfsplus_write_failed(struct address_space *mapping, loff_t to) +{ + struct inode *inode = mapping->host; + + if (to > inode->i_size) { + truncate_pagecache(inode, inode->i_size); + hfsplus_file_truncate(inode); + } +} + +int hfsplus_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, struct page **pagep, void **fsdata) +{ + int ret; + + *pagep = NULL; + ret = cont_write_begin(file, mapping, pos, len, pagep, fsdata, + hfsplus_get_block, + &HFSPLUS_I(mapping->host)->phys_size); + if (unlikely(ret)) + hfsplus_write_failed(mapping, pos + len); + + return ret; +} + +static sector_t hfsplus_bmap(struct address_space *mapping, sector_t block) +{ + return generic_block_bmap(mapping, block, hfsplus_get_block); +} + +static bool hfsplus_release_folio(struct folio *folio, gfp_t mask) +{ + struct inode *inode = folio->mapping->host; + struct super_block *sb = inode->i_sb; + struct hfs_btree *tree; + struct hfs_bnode *node; + u32 nidx; + int i; + bool res = true; + + switch (inode->i_ino) { + case HFSPLUS_EXT_CNID: + tree = HFSPLUS_SB(sb)->ext_tree; + break; + case HFSPLUS_CAT_CNID: + tree = HFSPLUS_SB(sb)->cat_tree; + break; + case HFSPLUS_ATTR_CNID: + tree = HFSPLUS_SB(sb)->attr_tree; + break; + default: + BUG(); + return false; + } + if (!tree) + return false; + if (tree->node_size >= PAGE_SIZE) { + nidx = folio->index >> + (tree->node_size_shift - PAGE_SHIFT); + spin_lock(&tree->hash_lock); + node = hfs_bnode_findhash(tree, nidx); + if (!node) + ; + else if (atomic_read(&node->refcnt)) + res = false; + if (res && node) { + hfs_bnode_unhash(node); + hfs_bnode_free(node); + } + spin_unlock(&tree->hash_lock); + } else { + nidx = folio->index << + (PAGE_SHIFT - tree->node_size_shift); + i = 1 << (PAGE_SHIFT - tree->node_size_shift); + spin_lock(&tree->hash_lock); + do { + node = hfs_bnode_findhash(tree, nidx++); + if (!node) + continue; + if (atomic_read(&node->refcnt)) { + res = false; + break; + } + hfs_bnode_unhash(node); + hfs_bnode_free(node); + } while (--i && nidx < tree->node_count); + spin_unlock(&tree->hash_lock); + } + return res ? try_to_free_buffers(folio) : false; +} + +static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter) +{ + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + size_t count = iov_iter_count(iter); + ssize_t ret; + + ret = blockdev_direct_IO(iocb, inode, iter, hfsplus_get_block); + + /* + * In case of error extending write may have instantiated a few + * blocks outside i_size. Trim these off again. + */ + if (unlikely(iov_iter_rw(iter) == WRITE && ret < 0)) { + loff_t isize = i_size_read(inode); + loff_t end = iocb->ki_pos + count; + + if (end > isize) + hfsplus_write_failed(mapping, end); + } + + return ret; +} + +static int hfsplus_writepages(struct address_space *mapping, + struct writeback_control *wbc) +{ + return mpage_writepages(mapping, wbc, hfsplus_get_block); +} + +const struct address_space_operations hfsplus_btree_aops = { + .dirty_folio = block_dirty_folio, + .invalidate_folio = block_invalidate_folio, + .read_folio = hfsplus_read_folio, + .writepage = hfsplus_writepage, + .write_begin = hfsplus_write_begin, + .write_end = generic_write_end, + .bmap = hfsplus_bmap, + .release_folio = hfsplus_release_folio, +}; + +const struct address_space_operations hfsplus_aops = { + .dirty_folio = block_dirty_folio, + .invalidate_folio = block_invalidate_folio, + .read_folio = hfsplus_read_folio, + .write_begin = hfsplus_write_begin, + .write_end = generic_write_end, + .bmap = hfsplus_bmap, + .direct_IO = hfsplus_direct_IO, + .writepages = hfsplus_writepages, + .migrate_folio = buffer_migrate_folio, +}; + +const struct dentry_operations hfsplus_dentry_operations = { + .d_hash = hfsplus_hash_dentry, + .d_compare = hfsplus_compare_dentry, +}; + +static void hfsplus_get_perms(struct inode *inode, + struct hfsplus_perm *perms, int dir) +{ + struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); + u16 mode; + + mode = be16_to_cpu(perms->mode); + + i_uid_write(inode, be32_to_cpu(perms->owner)); + if ((test_bit(HFSPLUS_SB_UID, &sbi->flags)) || (!i_uid_read(inode) && !mode)) + inode->i_uid = sbi->uid; + + i_gid_write(inode, be32_to_cpu(perms->group)); + if ((test_bit(HFSPLUS_SB_GID, &sbi->flags)) || (!i_gid_read(inode) && !mode)) + inode->i_gid = sbi->gid; + + if (dir) { + mode = mode ? (mode & S_IALLUGO) : (S_IRWXUGO & ~(sbi->umask)); + mode |= S_IFDIR; + } else if (!mode) + mode = S_IFREG | ((S_IRUGO|S_IWUGO) & ~(sbi->umask)); + inode->i_mode = mode; + + HFSPLUS_I(inode)->userflags = perms->userflags; + if (perms->rootflags & HFSPLUS_FLG_IMMUTABLE) + inode->i_flags |= S_IMMUTABLE; + else + inode->i_flags &= ~S_IMMUTABLE; + if (perms->rootflags & HFSPLUS_FLG_APPEND) + inode->i_flags |= S_APPEND; + else + inode->i_flags &= ~S_APPEND; +} + +static int hfsplus_file_open(struct inode *inode, struct file *file) +{ + if (HFSPLUS_IS_RSRC(inode)) + inode = HFSPLUS_I(inode)->rsrc_inode; + if (!(file->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) + return -EOVERFLOW; + atomic_inc(&HFSPLUS_I(inode)->opencnt); + return 0; +} + +static int hfsplus_file_release(struct inode *inode, struct file *file) +{ + struct super_block *sb = inode->i_sb; + + if (HFSPLUS_IS_RSRC(inode)) + inode = HFSPLUS_I(inode)->rsrc_inode; + if (atomic_dec_and_test(&HFSPLUS_I(inode)->opencnt)) { + inode_lock(inode); + hfsplus_file_truncate(inode); + if (inode->i_flags & S_DEAD) { + hfsplus_delete_cat(inode->i_ino, + HFSPLUS_SB(sb)->hidden_dir, NULL); + hfsplus_delete_inode(inode); + } + inode_unlock(inode); + } + return 0; +} + +static int hfsplus_setattr(struct mnt_idmap *idmap, + struct dentry *dentry, struct iattr *attr) +{ + struct inode *inode = d_inode(dentry); + int error; + + error = setattr_prepare(&nop_mnt_idmap, dentry, attr); + if (error) + return error; + + if ((attr->ia_valid & ATTR_SIZE) && + attr->ia_size != i_size_read(inode)) { + inode_dio_wait(inode); + if (attr->ia_size > inode->i_size) { + error = generic_cont_expand_simple(inode, + attr->ia_size); + if (error) + return error; + } + truncate_setsize(inode, attr->ia_size); + hfsplus_file_truncate(inode); + inode->i_mtime = inode->i_ctime = current_time(inode); + } + + setattr_copy(&nop_mnt_idmap, inode, attr); + mark_inode_dirty(inode); + + return 0; +} + +int hfsplus_getattr(struct mnt_idmap *idmap, const struct path *path, + struct kstat *stat, u32 request_mask, + unsigned int query_flags) +{ + struct inode *inode = d_inode(path->dentry); + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); + + if (request_mask & STATX_BTIME) { + stat->result_mask |= STATX_BTIME; + stat->btime = hfsp_mt2ut(hip->create_date); + } + + if (inode->i_flags & S_APPEND) + stat->attributes |= STATX_ATTR_APPEND; + if (inode->i_flags & S_IMMUTABLE) + stat->attributes |= STATX_ATTR_IMMUTABLE; + if (hip->userflags & HFSPLUS_FLG_NODUMP) + stat->attributes |= STATX_ATTR_NODUMP; + + stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | + STATX_ATTR_NODUMP; + + generic_fillattr(&nop_mnt_idmap, inode, stat); + return 0; +} + +int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, + int datasync) +{ + struct inode *inode = file->f_mapping->host; + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); + struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); + int error = 0, error2; + + error = file_write_and_wait_range(file, start, end); + if (error) + return error; + inode_lock(inode); + + /* + * Sync inode metadata into the catalog and extent trees. + */ + sync_inode_metadata(inode, 1); + + /* + * And explicitly write out the btrees. + */ + if (test_and_clear_bit(HFSPLUS_I_CAT_DIRTY, &hip->flags)) + error = filemap_write_and_wait(sbi->cat_tree->inode->i_mapping); + + if (test_and_clear_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags)) { + error2 = + filemap_write_and_wait(sbi->ext_tree->inode->i_mapping); + if (!error) + error = error2; + } + + if (test_and_clear_bit(HFSPLUS_I_ATTR_DIRTY, &hip->flags)) { + if (sbi->attr_tree) { + error2 = + filemap_write_and_wait( + sbi->attr_tree->inode->i_mapping); + if (!error) + error = error2; + } else { + pr_err("sync non-existent attributes tree\n"); + } + } + + if (test_and_clear_bit(HFSPLUS_I_ALLOC_DIRTY, &hip->flags)) { + error2 = filemap_write_and_wait(sbi->alloc_file->i_mapping); + if (!error) + error = error2; + } + + if (!test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) + blkdev_issue_flush(inode->i_sb->s_bdev); + + inode_unlock(inode); + + return error; +} + +static const struct inode_operations hfsplus_file_inode_operations = { + .setattr = hfsplus_setattr, + .getattr = hfsplus_getattr, + .listxattr = hfsplus_listxattr, + .fileattr_get = hfsplus_fileattr_get, + .fileattr_set = hfsplus_fileattr_set, +}; + +static const struct file_operations hfsplus_file_operations = { + .llseek = generic_file_llseek, + .read_iter = generic_file_read_iter, + .write_iter = generic_file_write_iter, + .mmap = generic_file_mmap, + .splice_read = generic_file_splice_read, + .fsync = hfsplus_file_fsync, + .open = hfsplus_file_open, + .release = hfsplus_file_release, + .unlocked_ioctl = hfsplus_ioctl, +}; + +struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, + umode_t mode) +{ + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + struct inode *inode = new_inode(sb); + struct hfsplus_inode_info *hip; + + if (!inode) + return NULL; + + inode->i_ino = sbi->next_cnid++; + inode_init_owner(&nop_mnt_idmap, inode, dir, mode); + set_nlink(inode, 1); + inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + + hip = HFSPLUS_I(inode); + INIT_LIST_HEAD(&hip->open_dir_list); + spin_lock_init(&hip->open_dir_lock); + mutex_init(&hip->extents_lock); + atomic_set(&hip->opencnt, 0); + hip->extent_state = 0; + hip->flags = 0; + hip->userflags = 0; + hip->subfolders = 0; + memset(hip->first_extents, 0, sizeof(hfsplus_extent_rec)); + memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); + hip->alloc_blocks = 0; + hip->first_blocks = 0; + hip->cached_start = 0; + hip->cached_blocks = 0; + hip->phys_size = 0; + hip->fs_blocks = 0; + hip->rsrc_inode = NULL; + if (S_ISDIR(inode->i_mode)) { + inode->i_size = 2; + sbi->folder_count++; + inode->i_op = &hfsplus_dir_inode_operations; + inode->i_fop = &hfsplus_dir_operations; + } else if (S_ISREG(inode->i_mode)) { + sbi->file_count++; + inode->i_op = &hfsplus_file_inode_operations; + inode->i_fop = &hfsplus_file_operations; + inode->i_mapping->a_ops = &hfsplus_aops; + hip->clump_blocks = sbi->data_clump_blocks; + } else if (S_ISLNK(inode->i_mode)) { + sbi->file_count++; + inode->i_op = &page_symlink_inode_operations; + inode_nohighmem(inode); + inode->i_mapping->a_ops = &hfsplus_aops; + hip->clump_blocks = 1; + } else + sbi->file_count++; + insert_inode_hash(inode); + mark_inode_dirty(inode); + hfsplus_mark_mdb_dirty(sb); + + return inode; +} + +void hfsplus_delete_inode(struct inode *inode) +{ + struct super_block *sb = inode->i_sb; + + if (S_ISDIR(inode->i_mode)) { + HFSPLUS_SB(sb)->folder_count--; + hfsplus_mark_mdb_dirty(sb); + return; + } + HFSPLUS_SB(sb)->file_count--; + if (S_ISREG(inode->i_mode)) { + if (!inode->i_nlink) { + inode->i_size = 0; + hfsplus_file_truncate(inode); + } + } else if (S_ISLNK(inode->i_mode)) { + inode->i_size = 0; + hfsplus_file_truncate(inode); + } + hfsplus_mark_mdb_dirty(sb); +} + +void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork) +{ + struct super_block *sb = inode->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); + u32 count; + int i; + + memcpy(&hip->first_extents, &fork->extents, sizeof(hfsplus_extent_rec)); + for (count = 0, i = 0; i < 8; i++) + count += be32_to_cpu(fork->extents[i].block_count); + hip->first_blocks = count; + memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec)); + hip->cached_start = 0; + hip->cached_blocks = 0; + + hip->alloc_blocks = be32_to_cpu(fork->total_blocks); + hip->phys_size = inode->i_size = be64_to_cpu(fork->total_size); + hip->fs_blocks = + (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits; + inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits); + hip->clump_blocks = + be32_to_cpu(fork->clump_size) >> sbi->alloc_blksz_shift; + if (!hip->clump_blocks) { + hip->clump_blocks = HFSPLUS_IS_RSRC(inode) ? + sbi->rsrc_clump_blocks : + sbi->data_clump_blocks; + } +} + +void hfsplus_inode_write_fork(struct inode *inode, + struct hfsplus_fork_raw *fork) +{ + memcpy(&fork->extents, &HFSPLUS_I(inode)->first_extents, + sizeof(hfsplus_extent_rec)); + fork->total_size = cpu_to_be64(inode->i_size); + fork->total_blocks = cpu_to_be32(HFSPLUS_I(inode)->alloc_blocks); +} + +int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) +{ + hfsplus_cat_entry entry; + int res = 0; + u16 type; + + type = hfs_bnode_read_u16(fd->bnode, fd->entryoffset); + + HFSPLUS_I(inode)->linkid = 0; + if (type == HFSPLUS_FOLDER) { + struct hfsplus_cat_folder *folder = &entry.folder; + + WARN_ON(fd->entrylength < sizeof(struct hfsplus_cat_folder)); + hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, + sizeof(struct hfsplus_cat_folder)); + hfsplus_get_perms(inode, &folder->permissions, 1); + set_nlink(inode, 1); + inode->i_size = 2 + be32_to_cpu(folder->valence); + inode->i_atime = hfsp_mt2ut(folder->access_date); + inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); + inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); + HFSPLUS_I(inode)->create_date = folder->create_date; + HFSPLUS_I(inode)->fs_blocks = 0; + if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { + HFSPLUS_I(inode)->subfolders = + be32_to_cpu(folder->subfolders); + } + inode->i_op = &hfsplus_dir_inode_operations; + inode->i_fop = &hfsplus_dir_operations; + } else if (type == HFSPLUS_FILE) { + struct hfsplus_cat_file *file = &entry.file; + + WARN_ON(fd->entrylength < sizeof(struct hfsplus_cat_file)); + hfs_bnode_read(fd->bnode, &entry, fd->entryoffset, + sizeof(struct hfsplus_cat_file)); + + hfsplus_inode_read_fork(inode, HFSPLUS_IS_RSRC(inode) ? + &file->rsrc_fork : &file->data_fork); + hfsplus_get_perms(inode, &file->permissions, 0); + set_nlink(inode, 1); + if (S_ISREG(inode->i_mode)) { + if (file->permissions.dev) + set_nlink(inode, + be32_to_cpu(file->permissions.dev)); + inode->i_op = &hfsplus_file_inode_operations; + inode->i_fop = &hfsplus_file_operations; + inode->i_mapping->a_ops = &hfsplus_aops; + } else if (S_ISLNK(inode->i_mode)) { + inode->i_op = &page_symlink_inode_operations; + inode_nohighmem(inode); + inode->i_mapping->a_ops = &hfsplus_aops; + } else { + init_special_inode(inode, inode->i_mode, + be32_to_cpu(file->permissions.dev)); + } + inode->i_atime = hfsp_mt2ut(file->access_date); + inode->i_mtime = hfsp_mt2ut(file->content_mod_date); + inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); + HFSPLUS_I(inode)->create_date = file->create_date; + } else { + pr_err("bad catalog entry used to create inode\n"); + res = -EIO; + } + return res; +} + +int hfsplus_cat_write_inode(struct inode *inode) +{ + struct inode *main_inode = inode; + struct hfs_find_data fd; + hfsplus_cat_entry entry; + + if (HFSPLUS_IS_RSRC(inode)) + main_inode = HFSPLUS_I(inode)->rsrc_inode; + + if (!main_inode->i_nlink) + return 0; + + if (hfs_find_init(HFSPLUS_SB(main_inode->i_sb)->cat_tree, &fd)) + /* panic? */ + return -EIO; + + if (hfsplus_find_cat(main_inode->i_sb, main_inode->i_ino, &fd)) + /* panic? */ + goto out; + + if (S_ISDIR(main_inode->i_mode)) { + struct hfsplus_cat_folder *folder = &entry.folder; + + WARN_ON(fd.entrylength < sizeof(struct hfsplus_cat_folder)); + hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, + sizeof(struct hfsplus_cat_folder)); + /* simple node checks? */ + hfsplus_cat_set_perms(inode, &folder->permissions); + folder->access_date = hfsp_ut2mt(inode->i_atime); + folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); + folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); + folder->valence = cpu_to_be32(inode->i_size - 2); + if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { + folder->subfolders = + cpu_to_be32(HFSPLUS_I(inode)->subfolders); + } + hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, + sizeof(struct hfsplus_cat_folder)); + } else if (HFSPLUS_IS_RSRC(inode)) { + struct hfsplus_cat_file *file = &entry.file; + hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, + sizeof(struct hfsplus_cat_file)); + hfsplus_inode_write_fork(inode, &file->rsrc_fork); + hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, + sizeof(struct hfsplus_cat_file)); + } else { + struct hfsplus_cat_file *file = &entry.file; + + WARN_ON(fd.entrylength < sizeof(struct hfsplus_cat_file)); + hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, + sizeof(struct hfsplus_cat_file)); + hfsplus_inode_write_fork(inode, &file->data_fork); + hfsplus_cat_set_perms(inode, &file->permissions); + if (HFSPLUS_FLG_IMMUTABLE & + (file->permissions.rootflags | + file->permissions.userflags)) + file->flags |= cpu_to_be16(HFSPLUS_FILE_LOCKED); + else + file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); + file->access_date = hfsp_ut2mt(inode->i_atime); + file->content_mod_date = hfsp_ut2mt(inode->i_mtime); + file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); + hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, + sizeof(struct hfsplus_cat_file)); + } + + set_bit(HFSPLUS_I_CAT_DIRTY, &HFSPLUS_I(inode)->flags); +out: + hfs_find_exit(&fd); + return 0; +} + +int hfsplus_fileattr_get(struct dentry *dentry, struct fileattr *fa) +{ + struct inode *inode = d_inode(dentry); + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); + unsigned int flags = 0; + + if (inode->i_flags & S_IMMUTABLE) + flags |= FS_IMMUTABLE_FL; + if (inode->i_flags & S_APPEND) + flags |= FS_APPEND_FL; + if (hip->userflags & HFSPLUS_FLG_NODUMP) + flags |= FS_NODUMP_FL; + + fileattr_fill_flags(fa, flags); + + return 0; +} + +int hfsplus_fileattr_set(struct mnt_idmap *idmap, + struct dentry *dentry, struct fileattr *fa) +{ + struct inode *inode = d_inode(dentry); + struct hfsplus_inode_info *hip = HFSPLUS_I(inode); + unsigned int new_fl = 0; + + if (fileattr_has_fsx(fa)) + return -EOPNOTSUPP; + + /* don't silently ignore unsupported ext2 flags */ + if (fa->flags & ~(FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NODUMP_FL)) + return -EOPNOTSUPP; + + if (fa->flags & FS_IMMUTABLE_FL) + new_fl |= S_IMMUTABLE; + + if (fa->flags & FS_APPEND_FL) + new_fl |= S_APPEND; + + inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND); + + if (fa->flags & FS_NODUMP_FL) + hip->userflags |= HFSPLUS_FLG_NODUMP; + else + hip->userflags &= ~HFSPLUS_FLG_NODUMP; + + inode->i_ctime = current_time(inode); + mark_inode_dirty(inode); + + return 0; +} -- cgit v1.2.3