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/cifs/smb2inode.c | 824 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 824 insertions(+) create mode 100644 fs/cifs/smb2inode.c (limited to 'fs/cifs/smb2inode.c') diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c new file mode 100644 index 000000000..8521adf9c --- /dev/null +++ b/fs/cifs/smb2inode.c @@ -0,0 +1,824 @@ +// SPDX-License-Identifier: LGPL-2.1 +/* + * + * Copyright (C) International Business Machines Corp., 2002, 2011 + * Etersoft, 2012 + * Author(s): Pavel Shilovsky (pshilovsky@samba.org), + * Steve French (sfrench@us.ibm.com) + * + */ +#include +#include +#include +#include +#include +#include "cifsfs.h" +#include "cifspdu.h" +#include "cifsglob.h" +#include "cifsproto.h" +#include "cifs_debug.h" +#include "cifs_fs_sb.h" +#include "cifs_unicode.h" +#include "fscache.h" +#include "smb2glob.h" +#include "smb2pdu.h" +#include "smb2proto.h" +#include "cached_dir.h" +#include "smb2status.h" + +static void +free_set_inf_compound(struct smb_rqst *rqst) +{ + if (rqst[1].rq_iov) + SMB2_set_info_free(&rqst[1]); + if (rqst[2].rq_iov) + SMB2_close_free(&rqst[2]); +} + + +struct cop_vars { + struct cifs_open_parms oparms; + struct kvec rsp_iov[3]; + struct smb_rqst rqst[3]; + struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; + struct kvec qi_iov[1]; + struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; + struct kvec close_iov[1]; + struct smb2_file_rename_info rename_info; + struct smb2_file_link_info link_info; +}; + +/* + * note: If cfile is passed, the reference to it is dropped here. + * So make sure that you do not reuse cfile after return from this func. + * + * If passing @err_iov and @err_buftype, ensure to make them both large enough (>= 3) to hold all + * error responses. Caller is also responsible for freeing them up. + */ +static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const char *full_path, + __u32 desired_access, __u32 create_disposition, __u32 create_options, + umode_t mode, void *ptr, int command, struct cifsFileInfo *cfile, + __u8 **extbuf, size_t *extbuflen, + struct kvec *err_iov, int *err_buftype) +{ + struct cop_vars *vars = NULL; + struct kvec *rsp_iov; + struct smb_rqst *rqst; + int rc; + __le16 *utf16_path = NULL; + __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; + struct cifs_fid fid; + struct cifs_ses *ses = tcon->ses; + struct TCP_Server_Info *server; + int num_rqst = 0; + int resp_buftype[3]; + struct smb2_query_info_rsp *qi_rsp = NULL; + struct cifs_open_info_data *idata; + int flags = 0; + __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0}; + unsigned int size[2]; + void *data[2]; + int len; + + vars = kzalloc(sizeof(*vars), GFP_ATOMIC); + if (vars == NULL) + return -ENOMEM; + rqst = &vars->rqst[0]; + rsp_iov = &vars->rsp_iov[0]; + + server = cifs_pick_channel(ses); + + if (smb3_encryption_required(tcon)) + flags |= CIFS_TRANSFORM_REQ; + + resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; + + /* We already have a handle so we can skip the open */ + if (cfile) + goto after_open; + + /* Open */ + utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); + if (!utf16_path) { + rc = -ENOMEM; + goto finished; + } + + vars->oparms.tcon = tcon; + vars->oparms.desired_access = desired_access; + vars->oparms.disposition = create_disposition; + vars->oparms.create_options = cifs_create_options(cifs_sb, create_options); + vars->oparms.fid = &fid; + vars->oparms.reconnect = false; + vars->oparms.mode = mode; + vars->oparms.cifs_sb = cifs_sb; + + rqst[num_rqst].rq_iov = &vars->open_iov[0]; + rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE; + rc = SMB2_open_init(tcon, server, + &rqst[num_rqst], &oplock, &vars->oparms, + utf16_path); + kfree(utf16_path); + if (rc) + goto finished; + + smb2_set_next_command(tcon, &rqst[num_rqst]); + after_open: + num_rqst++; + rc = 0; + + /* Operation */ + switch (command) { + case SMB2_OP_QUERY_INFO: + rqst[num_rqst].rq_iov = &vars->qi_iov[0]; + rqst[num_rqst].rq_nvec = 1; + + if (cfile) + rc = SMB2_query_info_init(tcon, server, + &rqst[num_rqst], + cfile->fid.persistent_fid, + cfile->fid.volatile_fid, + FILE_ALL_INFORMATION, + SMB2_O_INFO_FILE, 0, + sizeof(struct smb2_file_all_info) + + PATH_MAX * 2, 0, NULL); + else { + rc = SMB2_query_info_init(tcon, server, + &rqst[num_rqst], + COMPOUND_FID, + COMPOUND_FID, + FILE_ALL_INFORMATION, + SMB2_O_INFO_FILE, 0, + sizeof(struct smb2_file_all_info) + + PATH_MAX * 2, 0, NULL); + if (!rc) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } + } + + if (rc) + goto finished; + num_rqst++; + trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid, + full_path); + break; + case SMB2_OP_POSIX_QUERY_INFO: + rqst[num_rqst].rq_iov = &vars->qi_iov[0]; + rqst[num_rqst].rq_nvec = 1; + + if (cfile) + rc = SMB2_query_info_init(tcon, server, + &rqst[num_rqst], + cfile->fid.persistent_fid, + cfile->fid.volatile_fid, + SMB_FIND_FILE_POSIX_INFO, + SMB2_O_INFO_FILE, 0, + /* TBD: fix following to allow for longer SIDs */ + sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) + + (sizeof(struct cifs_sid) * 2), 0, NULL); + else { + rc = SMB2_query_info_init(tcon, server, + &rqst[num_rqst], + COMPOUND_FID, + COMPOUND_FID, + SMB_FIND_FILE_POSIX_INFO, + SMB2_O_INFO_FILE, 0, + sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) + + (sizeof(struct cifs_sid) * 2), 0, NULL); + if (!rc) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } + } + + if (rc) + goto finished; + num_rqst++; + trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path); + break; + case SMB2_OP_DELETE: + trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path); + break; + case SMB2_OP_MKDIR: + /* + * Directories are created through parameters in the + * SMB2_open() call. + */ + trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path); + break; + case SMB2_OP_RMDIR: + rqst[num_rqst].rq_iov = &vars->si_iov[0]; + rqst[num_rqst].rq_nvec = 1; + + size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */ + data[0] = &delete_pending[0]; + + rc = SMB2_set_info_init(tcon, server, + &rqst[num_rqst], COMPOUND_FID, + COMPOUND_FID, current->tgid, + FILE_DISPOSITION_INFORMATION, + SMB2_O_INFO_FILE, 0, data, size); + if (rc) + goto finished; + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst++]); + trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path); + break; + case SMB2_OP_SET_EOF: + rqst[num_rqst].rq_iov = &vars->si_iov[0]; + rqst[num_rqst].rq_nvec = 1; + + size[0] = 8; /* sizeof __le64 */ + data[0] = ptr; + + rc = SMB2_set_info_init(tcon, server, + &rqst[num_rqst], COMPOUND_FID, + COMPOUND_FID, current->tgid, + FILE_END_OF_FILE_INFORMATION, + SMB2_O_INFO_FILE, 0, data, size); + if (rc) + goto finished; + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst++]); + trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path); + break; + case SMB2_OP_SET_INFO: + rqst[num_rqst].rq_iov = &vars->si_iov[0]; + rqst[num_rqst].rq_nvec = 1; + + + size[0] = sizeof(FILE_BASIC_INFO); + data[0] = ptr; + + if (cfile) + rc = SMB2_set_info_init(tcon, server, + &rqst[num_rqst], + cfile->fid.persistent_fid, + cfile->fid.volatile_fid, current->tgid, + FILE_BASIC_INFORMATION, + SMB2_O_INFO_FILE, 0, data, size); + else { + rc = SMB2_set_info_init(tcon, server, + &rqst[num_rqst], + COMPOUND_FID, + COMPOUND_FID, current->tgid, + FILE_BASIC_INFORMATION, + SMB2_O_INFO_FILE, 0, data, size); + if (!rc) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } + } + + if (rc) + goto finished; + num_rqst++; + trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid, + full_path); + break; + case SMB2_OP_RENAME: + rqst[num_rqst].rq_iov = &vars->si_iov[0]; + rqst[num_rqst].rq_nvec = 2; + + len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX)); + + vars->rename_info.ReplaceIfExists = 1; + vars->rename_info.RootDirectory = 0; + vars->rename_info.FileNameLength = cpu_to_le32(len); + + size[0] = sizeof(struct smb2_file_rename_info); + data[0] = &vars->rename_info; + + size[1] = len + 2 /* null */; + data[1] = (__le16 *)ptr; + + if (cfile) + rc = SMB2_set_info_init(tcon, server, + &rqst[num_rqst], + cfile->fid.persistent_fid, + cfile->fid.volatile_fid, + current->tgid, FILE_RENAME_INFORMATION, + SMB2_O_INFO_FILE, 0, data, size); + else { + rc = SMB2_set_info_init(tcon, server, + &rqst[num_rqst], + COMPOUND_FID, COMPOUND_FID, + current->tgid, FILE_RENAME_INFORMATION, + SMB2_O_INFO_FILE, 0, data, size); + if (!rc) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } + } + if (rc) + goto finished; + num_rqst++; + trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path); + break; + case SMB2_OP_HARDLINK: + rqst[num_rqst].rq_iov = &vars->si_iov[0]; + rqst[num_rqst].rq_nvec = 2; + + len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX)); + + vars->link_info.ReplaceIfExists = 0; + vars->link_info.RootDirectory = 0; + vars->link_info.FileNameLength = cpu_to_le32(len); + + size[0] = sizeof(struct smb2_file_link_info); + data[0] = &vars->link_info; + + size[1] = len + 2 /* null */; + data[1] = (__le16 *)ptr; + + rc = SMB2_set_info_init(tcon, server, + &rqst[num_rqst], COMPOUND_FID, + COMPOUND_FID, current->tgid, + FILE_LINK_INFORMATION, + SMB2_O_INFO_FILE, 0, data, size); + if (rc) + goto finished; + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst++]); + trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path); + break; + default: + cifs_dbg(VFS, "Invalid command\n"); + rc = -EINVAL; + } + if (rc) + goto finished; + + /* We already have a handle so we can skip the close */ + if (cfile) + goto after_close; + /* Close */ + flags |= CIFS_CP_CREATE_CLOSE_OP; + rqst[num_rqst].rq_iov = &vars->close_iov[0]; + rqst[num_rqst].rq_nvec = 1; + rc = SMB2_close_init(tcon, server, + &rqst[num_rqst], COMPOUND_FID, + COMPOUND_FID, false); + smb2_set_related(&rqst[num_rqst]); + if (rc) + goto finished; + after_close: + num_rqst++; + + if (cfile) { + rc = compound_send_recv(xid, ses, server, + flags, num_rqst - 2, + &rqst[1], &resp_buftype[1], + &rsp_iov[1]); + } else + rc = compound_send_recv(xid, ses, server, + flags, num_rqst, + rqst, resp_buftype, + rsp_iov); + + finished: + if (cfile) + cifsFileInfo_put(cfile); + + SMB2_open_free(&rqst[0]); + if (rc == -EREMCHG) { + pr_warn_once("server share %s deleted\n", tcon->tree_name); + tcon->need_reconnect = true; + } + + switch (command) { + case SMB2_OP_QUERY_INFO: + idata = ptr; + if (rc == 0 && cfile && cfile->symlink_target) { + idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); + if (!idata->symlink_target) + rc = -ENOMEM; + } + if (rc == 0) { + qi_rsp = (struct smb2_query_info_rsp *) + rsp_iov[1].iov_base; + rc = smb2_validate_and_copy_iov( + le16_to_cpu(qi_rsp->OutputBufferOffset), + le32_to_cpu(qi_rsp->OutputBufferLength), + &rsp_iov[1], sizeof(idata->fi), (char *)&idata->fi); + } + if (rqst[1].rq_iov) + SMB2_query_info_free(&rqst[1]); + if (rqst[2].rq_iov) + SMB2_close_free(&rqst[2]); + if (rc) + trace_smb3_query_info_compound_err(xid, ses->Suid, + tcon->tid, rc); + else + trace_smb3_query_info_compound_done(xid, ses->Suid, + tcon->tid); + break; + case SMB2_OP_POSIX_QUERY_INFO: + idata = ptr; + if (rc == 0 && cfile && cfile->symlink_target) { + idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); + if (!idata->symlink_target) + rc = -ENOMEM; + } + if (rc == 0) { + qi_rsp = (struct smb2_query_info_rsp *) + rsp_iov[1].iov_base; + rc = smb2_validate_and_copy_iov( + le16_to_cpu(qi_rsp->OutputBufferOffset), + le32_to_cpu(qi_rsp->OutputBufferLength), + &rsp_iov[1], sizeof(idata->posix_fi) /* add SIDs */, + (char *)&idata->posix_fi); + } + if (rc == 0) { + unsigned int length = le32_to_cpu(qi_rsp->OutputBufferLength); + + if (length > sizeof(idata->posix_fi)) { + char *base = (char *)rsp_iov[1].iov_base + + le16_to_cpu(qi_rsp->OutputBufferOffset) + + sizeof(idata->posix_fi); + *extbuflen = length - sizeof(idata->posix_fi); + *extbuf = kmemdup(base, *extbuflen, GFP_KERNEL); + if (!*extbuf) + rc = -ENOMEM; + } else { + rc = -EINVAL; + } + } + if (rqst[1].rq_iov) + SMB2_query_info_free(&rqst[1]); + if (rqst[2].rq_iov) + SMB2_close_free(&rqst[2]); + if (rc) + trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc); + else + trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid); + break; + case SMB2_OP_DELETE: + if (rc) + trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc); + else + trace_smb3_delete_done(xid, ses->Suid, tcon->tid); + if (rqst[1].rq_iov) + SMB2_close_free(&rqst[1]); + break; + case SMB2_OP_MKDIR: + if (rc) + trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc); + else + trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid); + if (rqst[1].rq_iov) + SMB2_close_free(&rqst[1]); + break; + case SMB2_OP_HARDLINK: + if (rc) + trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc); + else + trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid); + free_set_inf_compound(rqst); + break; + case SMB2_OP_RENAME: + if (rc) + trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc); + else + trace_smb3_rename_done(xid, ses->Suid, tcon->tid); + free_set_inf_compound(rqst); + break; + case SMB2_OP_RMDIR: + if (rc) + trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc); + else + trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid); + free_set_inf_compound(rqst); + break; + case SMB2_OP_SET_EOF: + if (rc) + trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc); + else + trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid); + free_set_inf_compound(rqst); + break; + case SMB2_OP_SET_INFO: + if (rc) + trace_smb3_set_info_compound_err(xid, ses->Suid, + tcon->tid, rc); + else + trace_smb3_set_info_compound_done(xid, ses->Suid, + tcon->tid); + free_set_inf_compound(rqst); + break; + } + + if (rc && err_iov && err_buftype) { + memcpy(err_iov, rsp_iov, 3 * sizeof(*err_iov)); + memcpy(err_buftype, resp_buftype, 3 * sizeof(*err_buftype)); + } else { + free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); + free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); + free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); + } + kfree(vars); + return rc; +} + +int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const char *full_path, + struct cifs_open_info_data *data, bool *adjust_tz, bool *reparse) +{ + int rc; + __u32 create_options = 0; + struct cifsFileInfo *cfile; + struct cached_fid *cfid = NULL; + struct kvec err_iov[3] = {}; + int err_buftype[3] = {}; + + *adjust_tz = false; + *reparse = false; + + if (strcmp(full_path, "")) + rc = -ENOENT; + else + rc = open_cached_dir(xid, tcon, full_path, cifs_sb, false, &cfid); + /* If it is a root and its handle is cached then use it */ + if (!rc) { + if (cfid->file_all_info_is_valid) { + memcpy(&data->fi, &cfid->file_all_info, sizeof(data->fi)); + } else { + rc = SMB2_query_info(xid, tcon, cfid->fid.persistent_fid, + cfid->fid.volatile_fid, &data->fi); + } + close_cached_dir(cfid); + return rc; + } + + cifs_get_readable_path(tcon, full_path, &cfile); + rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, FILE_READ_ATTRIBUTES, FILE_OPEN, + create_options, ACL_NO_MODE, data, SMB2_OP_QUERY_INFO, cfile, + NULL, NULL, err_iov, err_buftype); + if (rc) { + struct smb2_hdr *hdr = err_iov[0].iov_base; + + if (unlikely(!hdr || err_buftype[0] == CIFS_NO_BUFFER)) + goto out; + if (rc == -EOPNOTSUPP && hdr->Command == SMB2_CREATE && + hdr->Status == STATUS_STOPPED_ON_SYMLINK) { + rc = smb2_parse_symlink_response(cifs_sb, err_iov, + &data->symlink_target); + if (rc) + goto out; + + *reparse = true; + create_options |= OPEN_REPARSE_POINT; + + /* Failed on a symbolic link - query a reparse point info */ + cifs_get_readable_path(tcon, full_path, &cfile); + rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, + FILE_READ_ATTRIBUTES, FILE_OPEN, + create_options, ACL_NO_MODE, data, + SMB2_OP_QUERY_INFO, cfile, NULL, NULL, + NULL, NULL); + goto out; + } else if (rc != -EREMOTE && IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) && + hdr->Status == STATUS_OBJECT_NAME_INVALID) { + /* + * Handle weird Windows SMB server behaviour. It responds with + * STATUS_OBJECT_NAME_INVALID code to SMB2 QUERY_INFO request + * for "\\\" DFS reference, + * where contains non-ASCII unicode symbols. + */ + rc = -EREMOTE; + } + if (rc == -EREMOTE && IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) && cifs_sb && + (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS)) + rc = -EOPNOTSUPP; + } + +out: + free_rsp_buf(err_buftype[0], err_iov[0].iov_base); + free_rsp_buf(err_buftype[1], err_iov[1].iov_base); + free_rsp_buf(err_buftype[2], err_iov[2].iov_base); + return rc; +} + + +int smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, const char *full_path, + struct cifs_open_info_data *data, + struct cifs_sid *owner, + struct cifs_sid *group, + bool *adjust_tz, bool *reparse) +{ + int rc; + __u32 create_options = 0; + struct cifsFileInfo *cfile; + struct kvec err_iov[3] = {}; + int err_buftype[3] = {}; + __u8 *sidsbuf = NULL; + __u8 *sidsbuf_end = NULL; + size_t sidsbuflen = 0; + size_t owner_len, group_len; + + *adjust_tz = false; + *reparse = false; + + /* + * BB TODO: Add support for using the cached root handle. + * Create SMB2_query_posix_info worker function to do non-compounded query + * when we already have an open file handle for this. For now this is fast enough + * (always using the compounded version). + */ + + cifs_get_readable_path(tcon, full_path, &cfile); + rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, FILE_READ_ATTRIBUTES, FILE_OPEN, + create_options, ACL_NO_MODE, data, SMB2_OP_POSIX_QUERY_INFO, cfile, + &sidsbuf, &sidsbuflen, err_iov, err_buftype); + if (rc == -EOPNOTSUPP) { + /* BB TODO: When support for special files added to Samba re-verify this path */ + if (err_iov[0].iov_base && err_buftype[0] != CIFS_NO_BUFFER && + ((struct smb2_hdr *)err_iov[0].iov_base)->Command == SMB2_CREATE && + ((struct smb2_hdr *)err_iov[0].iov_base)->Status == STATUS_STOPPED_ON_SYMLINK) { + rc = smb2_parse_symlink_response(cifs_sb, err_iov, &data->symlink_target); + if (rc) + goto out; + } + *reparse = true; + create_options |= OPEN_REPARSE_POINT; + + /* Failed on a symbolic link - query a reparse point info */ + cifs_get_readable_path(tcon, full_path, &cfile); + rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, FILE_READ_ATTRIBUTES, + FILE_OPEN, create_options, ACL_NO_MODE, data, + SMB2_OP_POSIX_QUERY_INFO, cfile, + &sidsbuf, &sidsbuflen, NULL, NULL); + } + + if (rc == 0) { + sidsbuf_end = sidsbuf + sidsbuflen; + + owner_len = posix_info_sid_size(sidsbuf, sidsbuf_end); + if (owner_len == -1) { + rc = -EINVAL; + goto out; + } + memcpy(owner, sidsbuf, owner_len); + + group_len = posix_info_sid_size( + sidsbuf + owner_len, sidsbuf_end); + if (group_len == -1) { + rc = -EINVAL; + goto out; + } + memcpy(group, sidsbuf + owner_len, group_len); + } + +out: + kfree(sidsbuf); + free_rsp_buf(err_buftype[0], err_iov[0].iov_base); + free_rsp_buf(err_buftype[1], err_iov[1].iov_base); + free_rsp_buf(err_buftype[2], err_iov[2].iov_base); + return rc; +} + +int +smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode, + struct cifs_tcon *tcon, const char *name, + struct cifs_sb_info *cifs_sb) +{ + return smb2_compound_op(xid, tcon, cifs_sb, name, + FILE_WRITE_ATTRIBUTES, FILE_CREATE, + CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR, + NULL, NULL, NULL, NULL, NULL); +} + +void +smb2_mkdir_setinfo(struct inode *inode, const char *name, + struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, + const unsigned int xid) +{ + FILE_BASIC_INFO data; + struct cifsInodeInfo *cifs_i; + struct cifsFileInfo *cfile; + u32 dosattrs; + int tmprc; + + memset(&data, 0, sizeof(data)); + cifs_i = CIFS_I(inode); + dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; + data.Attributes = cpu_to_le32(dosattrs); + cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile); + tmprc = smb2_compound_op(xid, tcon, cifs_sb, name, + FILE_WRITE_ATTRIBUTES, FILE_CREATE, + CREATE_NOT_FILE, ACL_NO_MODE, + &data, SMB2_OP_SET_INFO, cfile, NULL, NULL, NULL, NULL); + if (tmprc == 0) + cifs_i->cifsAttrs = dosattrs; +} + +int +smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, + struct cifs_sb_info *cifs_sb) +{ + drop_cached_dir_by_name(xid, tcon, name, cifs_sb); + return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, + CREATE_NOT_FILE, ACL_NO_MODE, + NULL, SMB2_OP_RMDIR, NULL, NULL, NULL, NULL, NULL); +} + +int +smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, + struct cifs_sb_info *cifs_sb) +{ + return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, + CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT, + ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL, NULL, NULL, NULL, NULL); +} + +static int +smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, + const char *from_name, const char *to_name, + struct cifs_sb_info *cifs_sb, __u32 access, int command, + struct cifsFileInfo *cfile) +{ + __le16 *smb2_to_name = NULL; + int rc; + + smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb); + if (smb2_to_name == NULL) { + rc = -ENOMEM; + goto smb2_rename_path; + } + rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access, + FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name, + command, cfile, NULL, NULL, NULL, NULL); +smb2_rename_path: + kfree(smb2_to_name); + return rc; +} + +int +smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon, + const char *from_name, const char *to_name, + struct cifs_sb_info *cifs_sb) +{ + struct cifsFileInfo *cfile; + + drop_cached_dir_by_name(xid, tcon, from_name, cifs_sb); + cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile); + + return smb2_set_path_attr(xid, tcon, from_name, to_name, + cifs_sb, DELETE, SMB2_OP_RENAME, cfile); +} + +int +smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon, + const char *from_name, const char *to_name, + struct cifs_sb_info *cifs_sb) +{ + return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, + FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK, + NULL); +} + +int +smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, + const char *full_path, __u64 size, + struct cifs_sb_info *cifs_sb, bool set_alloc) +{ + __le64 eof = cpu_to_le64(size); + struct cifsFileInfo *cfile; + + cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); + return smb2_compound_op(xid, tcon, cifs_sb, full_path, + FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE, + &eof, SMB2_OP_SET_EOF, cfile, NULL, NULL, NULL, NULL); +} + +int +smb2_set_file_info(struct inode *inode, const char *full_path, + FILE_BASIC_INFO *buf, const unsigned int xid) +{ + struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); + struct tcon_link *tlink; + struct cifs_tcon *tcon; + struct cifsFileInfo *cfile; + int rc; + + if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) && + (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) && + (buf->Attributes == 0)) + return 0; /* would be a no op, no sense sending this */ + + tlink = cifs_sb_tlink(cifs_sb); + if (IS_ERR(tlink)) + return PTR_ERR(tlink); + tcon = tlink_tcon(tlink); + + cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); + rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, + FILE_WRITE_ATTRIBUTES, FILE_OPEN, + 0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, cfile, + NULL, NULL, NULL, NULL); + cifs_put_tlink(tlink); + return rc; +} -- cgit v1.2.3