279267442f
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAmTWBWgACgkQONu9yGCS aT66Iw//TwAjMECCqJ84moMMA7/fC8QrRiBLWz24f6sVGqMb3vZCiQ91Z4zEZID6 qV06RRlk08aJqhhllWYE6mqZJZTfmGgjEWjM0OL/bHFgU3TtHC0mR5mCtoUzFTzD bIZb6mj8egPDgAP55Sn0/Va0jR5Y4Mp2IFdbtu68J4jy/N4aDE1nTljQamMjhoiV JuUVf5XZsZ+4k6kSF01TIaJCDLjij9aSBbNltC0BrfzVIEj19leBb7x4slu6VGIp QGkPTySjRw1xRdBUTZ/uJzXqMIqBM0A0x9M9cd97vDNWrp6Qi9G6YeBh6D7X9x++ zy+Y1CusgH7M/nE/hOFPmgcqfJZfyf1Fa3fIa31+cMKIANg7G2dg+Gd4xxnL0FgA BSR2oSC5rzUK8X2/nMaduwQNMPQr8Q0vX5+KRnJB964swBvbPLplC5+NpYf0RKHD +bgkwN7Yxn2JqBWLkoGR9u6Mtyx0UclEVU0wKYAEwph3FLKlbiZjRPJdSa2p6gdd UZiMgVyTSGOlpbM31fG52RyLoePFxc7vfR/jmyVaYMUPB5xjMi355Rzxcm8VgmIi DArs/XUHeHeIyHRr6l6xlsx/2ihrENbO8ux9v07/jWMN/tzc5qEKZ1RmLRaaWwf7 3A+cTGMpRwznf3DxJoAFRiC6VhezJsa/BUHaTvSYki0OSxOJ/BM= =Bk55 -----END PGP SIGNATURE----- Merge 5.4.253 into android11-5.4-lts Changes in 5.4.253 jbd2: fix incorrect code style jbd2: fix kernel-doc markups jbd2: remove redundant buffer io error checks jbd2: recheck chechpointing non-dirty buffer jbd2: Fix wrongly judgement for buffer head removing while doing checkpoint gpio: tps68470: Make tps68470_gpio_output() always set the initial value bcache: remove 'int n' from parameter list of bch_bucket_alloc_set() bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent btrfs: qgroup: catch reserved space leaks at unmount time btrfs: fix race between quota disable and relocation btrfs: fix extent buffer leak after tree mod log failure at split_node() ext4: rename journal_dev to s_journal_dev inside ext4_sb_info ext4: Fix reusing stale buffer heads from last failed mounting PCI/ASPM: Return 0 or -ETIMEDOUT from pcie_retrain_link() PCI/ASPM: Factor out pcie_wait_for_retrain() PCI/ASPM: Avoid link retraining race dlm: cleanup plock_op vs plock_xop dlm: rearrange async condition return fs: dlm: interrupt posix locks only when process is killed ftrace: Add information on number of page groups allocated ftrace: Check if pages were allocated before calling free_pages() ftrace: Store the order of pages allocated in ftrace_page ftrace: Fix possible warning on checking all pages used in ftrace_process_locs() pwm: meson: Remove redundant assignment to variable fin_freq pwm: meson: Simplify duplicated per-channel tracking pwm: meson: fix handling of period/duty if greater than UINT_MAX scsi: qla2xxx: Fix inconsistent format argument type in qla_os.c scsi: qla2xxx: Array index may go out of bound uapi: General notification queue definitions keys: Fix linking a duplicate key to a keyring's assoc_array ext4: fix to check return value of freeze_bdev() in ext4_shutdown() i40e: Fix an NULL vs IS_ERR() bug for debugfs_create_dir() vxlan: calculate correct header length for GPE phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe() ethernet: atheros: fix return value check in atl1e_tso_csum() ipv6 addrconf: fix bug where deleting a mngtmpaddr can create a new temporary address tcp: Reduce chance of collisions in inet6_hashfn(). bonding: reset bond's flags when down link is P2P device team: reset team's flags when down link is P2P device platform/x86: msi-laptop: Fix rfkill out-of-sync on MSI Wind U100 net/sched: mqprio: refactor nlattr parsing to a separate function net/sched: mqprio: add extack to mqprio_parse_nlattr() net/sched: mqprio: Add length check for TCA_MQPRIO_{MAX/MIN}_RATE64 benet: fix return value check in be_lancer_xmit_workarounds() RDMA/mlx4: Make check for invalid flags stricter drm/msm/dpu: drop enum dpu_core_perf_data_bus_id drm/msm/adreno: Fix snapshot BINDLESS_DATA size drm/msm: Fix IS_ERR_OR_NULL() vs NULL check in a5xx_submit_in_rb() ASoC: fsl_spdif: Silence output on stop block: Fix a source code comment in include/uapi/linux/blkzoned.h dm raid: fix missing reconfig_mutex unlock in raid_ctr() error paths ata: pata_ns87415: mark ns87560_tf_read static ring-buffer: Fix wrong stat of cpu_buffer->read tracing: Fix warning in trace_buffered_event_disable() serial: 8250_dw: Preserve original value of DLF register serial: sifive: Fix sifive_serial_console_setup() section USB: serial: option: support Quectel EM060K_128 USB: serial: option: add Quectel EC200A module support USB: serial: simple: add Kaufmann RKS+CAN VCP USB: serial: simple: sort driver entries can: gs_usb: gs_can_close(): add missing set of CAN state to CAN_STATE_STOPPED Revert "usb: dwc3: core: Enable AutoRetry feature in the controller" usb: dwc3: pci: skip BYT GPIO lookup table for hardwired phy usb: dwc3: don't reset device side if dwc3 was configured as host-only usb: ohci-at91: Fix the unhandle interrupt when resume USB: quirks: add quirk for Focusrite Scarlett usb: xhci-mtk: set the dma max_seg_size Revert "usb: xhci: tegra: Fix error check" Documentation: security-bugs.rst: update preferences when dealing with the linux-distros group Documentation: security-bugs.rst: clarify CVE handling staging: ks7010: potential buffer overflow in ks_wlan_set_encode_ext() hwmon: (nct7802) Fix for temp6 (PECI1) processed even if PECI1 disabled btrfs: check for commit error at btrfs_attach_transaction_barrier() tpm_tis: Explicitly check for error code irq-bcm6345-l1: Do not assume a fixed block to cpu mapping btrfs: check if the transaction was aborted at btrfs_wait_for_commit() virtio-net: fix race between set queues and probe s390/dasd: fix hanging device after quiesce/resume ASoC: wm8904: Fill the cache for WM8904_ADC_TEST_0 register dm cache policy smq: ensure IO doesn't prevent cleaner policy progress ACPI: processor: perflib: Use the "no limit" frequency QoS ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily cpufreq: intel_pstate: Drop ACPI _PSS states table patching btrfs: qgroup: remove one-time use variables for quota_root checks btrfs: qgroup: return ENOTCONN instead of EINVAL when quotas are not enabled btrfs: fix race between quota disable and quota assign ioctls net/sched: sch_qfq: account for stab overhead in qfq_enqueue ASoC: cs42l51: fix driver to properly autoload with automatic module loading arm64: Add AMPERE1 to the Spectre-BHB affected list arm64: Fix bit-shifting UB in the MIDR_CPU_MODEL() macro perf: Fix function pointer case loop: Select I/O scheduler 'none' from inside add_disk() word-at-a-time: use the same return type for has_zero regardless of endianness KVM: s390: fix sthyi error handling net/mlx5: DR, fix memory leak in mlx5dr_cmd_create_reformat_ctx net/mlx5e: fix return value check in mlx5e_ipsec_remove_trailer() rtnetlink: let rtnl_bridge_setlink checks IFLA_BRIDGE_MODE length perf test uprobe_from_different_cu: Skip if there is no gcc net: sched: cls_u32: Fix match key mis-addressing mISDN: hfcpci: Fix potential deadlock on &hc->lock net: annotate data-races around sk->sk_max_pacing_rate net: add missing READ_ONCE(sk->sk_rcvlowat) annotation net: add missing READ_ONCE(sk->sk_sndbuf) annotation net: add missing READ_ONCE(sk->sk_rcvbuf) annotation net: add missing data-race annotations around sk->sk_peek_off net: add missing data-race annotation for sk_ll_usec net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after-free net/sched: cls_fw: No longer copy tcf_result on update to avoid use-after-free net/sched: cls_route: No longer copy tcf_result on update to avoid use-after-free bpf: sockmap: Remove preempt_disable in sock_map_sk_acquire driver core: add device probe log helper net: ll_temac: Switch to use dev_err_probe() helper net: ll_temac: fix error checking of irq_of_parse_and_map() net: dcb: choose correct policy to parse DCB_ATTR_BCN ip6mr: Fix skb_under_panic in ip6mr_cache_report() tcp_metrics: fix addr_same() helper tcp_metrics: annotate data-races around tm->tcpm_stamp tcp_metrics: annotate data-races around tm->tcpm_lock tcp_metrics: annotate data-races around tm->tcpm_vals[] tcp_metrics: annotate data-races around tm->tcpm_net tcp_metrics: fix data-race in tcpm_suck_dst() vs fastopen scsi: zfcp: Defer fc_rport blocking until after ADISC response libceph: fix potential hang in ceph_osdc_notify() USB: zaurus: Add ID for A-300/B-500/C-700 mtd: spinand: toshiba: Fix ecc_get_status mtd: rawnand: meson: fix OOB available bytes for ECC net: tun_chr_open(): set sk_uid from current_fsuid() net: tap_open(): set sk_uid from current_fsuid() fs/sysv: Null check to prevent null-ptr-deref bug Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb net: usbnet: Fix WARNING in usbnet_start_xmit/usb_submit_urb fs: Protect reconfiguration of sb read-write from racing writes ext2: Drop fragment support test_firmware: prevent race conditions by a correct implementation of locking test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation mtd: rawnand: omap_elm: Fix incorrect type in assignment powerpc/mm/altmap: Fix altmap boundary check selftests/rseq: check if libc rseq support is registered selftests/rseq: Play nice with binaries statically linked against glibc 2.35+ PM / wakeirq: support enabling wake-up irq after runtime_suspend called PM: sleep: wakeirq: fix wake irq arming ceph: show tasks waiting on caps in debugfs caps file ceph: use kill_anon_super helper ceph: defer stopping mdsc delayed_work arm64: dts: stratix10: fix incorrect I2C property for SCL signal ARM: dts: imx6sll: Make ssi node name same as other platforms ARM: dts: imx: Align L2 cache-controller nodename with dtschema ARM: dts: imx: add usb alias ARM: dts: imx6sll: fixup of operating points ARM: dts: nxp/imx6sll: fix wrong property name in usbphy node driver core: Annotate dev_err_probe() with __must_check driver code: print symbolic error code drivers: core: fix kernel-doc markup for dev_err_probe() Revert "driver core: Annotate dev_err_probe() with __must_check" Linux 5.4.253 Change-Id: I9c8d2b7250a3bcd3cb368c9d9e362a82c2fa5159 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
1400 lines
35 KiB
C
1400 lines
35 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/fs/ext4/ioctl.c
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*
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* Copyright (C) 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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* Laboratoire MASI - Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*/
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#include <linux/fs.h>
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#include <linux/capability.h>
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#include <linux/time.h>
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#include <linux/compat.h>
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#include <linux/mount.h>
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#include <linux/file.h>
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#include <linux/quotaops.h>
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#include <linux/random.h>
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#include <linux/uuid.h>
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#include <linux/uaccess.h>
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#include <linux/delay.h>
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#include <linux/iversion.h>
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#include "ext4_jbd2.h"
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#include "ext4.h"
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#include <linux/fsmap.h>
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#include "fsmap.h"
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#include <trace/events/ext4.h>
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/**
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* Swap memory between @a and @b for @len bytes.
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*
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* @a: pointer to first memory area
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* @b: pointer to second memory area
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* @len: number of bytes to swap
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*
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*/
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static void memswap(void *a, void *b, size_t len)
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{
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unsigned char *ap, *bp;
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ap = (unsigned char *)a;
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bp = (unsigned char *)b;
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while (len-- > 0) {
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swap(*ap, *bp);
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ap++;
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bp++;
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}
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}
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/**
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* Swap i_data and associated attributes between @inode1 and @inode2.
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* This function is used for the primary swap between inode1 and inode2
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* and also to revert this primary swap in case of errors.
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*
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* Therefore you have to make sure, that calling this method twice
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* will revert all changes.
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*
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* @inode1: pointer to first inode
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* @inode2: pointer to second inode
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*/
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static void swap_inode_data(struct inode *inode1, struct inode *inode2)
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{
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loff_t isize;
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struct ext4_inode_info *ei1;
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struct ext4_inode_info *ei2;
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unsigned long tmp;
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ei1 = EXT4_I(inode1);
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ei2 = EXT4_I(inode2);
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swap(inode1->i_version, inode2->i_version);
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swap(inode1->i_atime, inode2->i_atime);
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swap(inode1->i_mtime, inode2->i_mtime);
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memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data));
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tmp = ei1->i_flags & EXT4_FL_SHOULD_SWAP;
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ei1->i_flags = (ei2->i_flags & EXT4_FL_SHOULD_SWAP) |
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(ei1->i_flags & ~EXT4_FL_SHOULD_SWAP);
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ei2->i_flags = tmp | (ei2->i_flags & ~EXT4_FL_SHOULD_SWAP);
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swap(ei1->i_disksize, ei2->i_disksize);
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ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS);
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ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS);
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isize = i_size_read(inode1);
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i_size_write(inode1, i_size_read(inode2));
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i_size_write(inode2, isize);
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}
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static void reset_inode_seed(struct inode *inode)
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{
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struct ext4_inode_info *ei = EXT4_I(inode);
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struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
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__le32 inum = cpu_to_le32(inode->i_ino);
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__le32 gen = cpu_to_le32(inode->i_generation);
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__u32 csum;
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if (!ext4_has_metadata_csum(inode->i_sb))
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return;
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csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&inum, sizeof(inum));
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ei->i_csum_seed = ext4_chksum(sbi, csum, (__u8 *)&gen, sizeof(gen));
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}
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/**
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* Swap the information from the given @inode and the inode
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* EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other
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* important fields of the inodes.
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*
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* @sb: the super block of the filesystem
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* @inode: the inode to swap with EXT4_BOOT_LOADER_INO
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*
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*/
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static long swap_inode_boot_loader(struct super_block *sb,
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struct inode *inode)
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{
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handle_t *handle;
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int err;
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struct inode *inode_bl;
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struct ext4_inode_info *ei_bl;
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qsize_t size, size_bl, diff;
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blkcnt_t blocks;
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unsigned short bytes;
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inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO,
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EXT4_IGET_SPECIAL | EXT4_IGET_BAD);
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if (IS_ERR(inode_bl))
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return PTR_ERR(inode_bl);
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ei_bl = EXT4_I(inode_bl);
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/* Protect orig inodes against a truncate and make sure,
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* that only 1 swap_inode_boot_loader is running. */
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lock_two_nondirectories(inode, inode_bl);
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if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode) ||
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IS_SWAPFILE(inode) || IS_ENCRYPTED(inode) ||
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(EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL) ||
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ext4_has_inline_data(inode)) {
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err = -EINVAL;
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goto journal_err_out;
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}
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if (IS_RDONLY(inode) || IS_APPEND(inode) || IS_IMMUTABLE(inode) ||
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!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) {
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err = -EPERM;
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goto journal_err_out;
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}
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down_write(&EXT4_I(inode)->i_mmap_sem);
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err = filemap_write_and_wait(inode->i_mapping);
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if (err)
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goto err_out;
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err = filemap_write_and_wait(inode_bl->i_mapping);
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if (err)
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goto err_out;
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/* Wait for all existing dio workers */
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inode_dio_wait(inode);
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inode_dio_wait(inode_bl);
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truncate_inode_pages(&inode->i_data, 0);
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truncate_inode_pages(&inode_bl->i_data, 0);
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handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2);
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if (IS_ERR(handle)) {
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err = -EINVAL;
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goto err_out;
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}
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/* Protect extent tree against block allocations via delalloc */
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ext4_double_down_write_data_sem(inode, inode_bl);
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if (is_bad_inode(inode_bl) || !S_ISREG(inode_bl->i_mode)) {
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/* this inode has never been used as a BOOT_LOADER */
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set_nlink(inode_bl, 1);
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i_uid_write(inode_bl, 0);
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i_gid_write(inode_bl, 0);
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inode_bl->i_flags = 0;
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ei_bl->i_flags = 0;
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inode_set_iversion(inode_bl, 1);
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i_size_write(inode_bl, 0);
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EXT4_I(inode_bl)->i_disksize = inode_bl->i_size;
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inode_bl->i_mode = S_IFREG;
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if (ext4_has_feature_extents(sb)) {
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ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS);
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ext4_ext_tree_init(handle, inode_bl);
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} else
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memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data));
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}
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err = dquot_initialize(inode);
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if (err)
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goto err_out1;
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size = (qsize_t)(inode->i_blocks) * (1 << 9) + inode->i_bytes;
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size_bl = (qsize_t)(inode_bl->i_blocks) * (1 << 9) + inode_bl->i_bytes;
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diff = size - size_bl;
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swap_inode_data(inode, inode_bl);
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inode->i_ctime = inode_bl->i_ctime = current_time(inode);
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inode->i_generation = prandom_u32();
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inode_bl->i_generation = prandom_u32();
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reset_inode_seed(inode);
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reset_inode_seed(inode_bl);
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ext4_discard_preallocations(inode);
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err = ext4_mark_inode_dirty(handle, inode);
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if (err < 0) {
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/* No need to update quota information. */
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ext4_warning(inode->i_sb,
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"couldn't mark inode #%lu dirty (err %d)",
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inode->i_ino, err);
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/* Revert all changes: */
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swap_inode_data(inode, inode_bl);
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ext4_mark_inode_dirty(handle, inode);
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goto err_out1;
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}
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blocks = inode_bl->i_blocks;
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bytes = inode_bl->i_bytes;
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inode_bl->i_blocks = inode->i_blocks;
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inode_bl->i_bytes = inode->i_bytes;
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err = ext4_mark_inode_dirty(handle, inode_bl);
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if (err < 0) {
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/* No need to update quota information. */
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ext4_warning(inode_bl->i_sb,
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"couldn't mark inode #%lu dirty (err %d)",
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inode_bl->i_ino, err);
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goto revert;
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}
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/* Bootloader inode should not be counted into quota information. */
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if (diff > 0)
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dquot_free_space(inode, diff);
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else
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err = dquot_alloc_space(inode, -1 * diff);
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if (err < 0) {
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revert:
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/* Revert all changes: */
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inode_bl->i_blocks = blocks;
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inode_bl->i_bytes = bytes;
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swap_inode_data(inode, inode_bl);
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ext4_mark_inode_dirty(handle, inode);
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ext4_mark_inode_dirty(handle, inode_bl);
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}
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err_out1:
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ext4_journal_stop(handle);
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ext4_double_up_write_data_sem(inode, inode_bl);
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err_out:
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up_write(&EXT4_I(inode)->i_mmap_sem);
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journal_err_out:
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unlock_two_nondirectories(inode, inode_bl);
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iput(inode_bl);
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return err;
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}
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#ifdef CONFIG_FS_ENCRYPTION
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static int uuid_is_zero(__u8 u[16])
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{
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int i;
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for (i = 0; i < 16; i++)
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if (u[i])
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return 0;
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return 1;
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}
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#endif
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/*
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* If immutable is set and we are not clearing it, we're not allowed to change
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* anything else in the inode. Don't error out if we're only trying to set
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* immutable on an immutable file.
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*/
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static int ext4_ioctl_check_immutable(struct inode *inode, __u32 new_projid,
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unsigned int flags)
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{
|
|
struct ext4_inode_info *ei = EXT4_I(inode);
|
|
unsigned int oldflags = ei->i_flags;
|
|
|
|
if (!(oldflags & EXT4_IMMUTABLE_FL) || !(flags & EXT4_IMMUTABLE_FL))
|
|
return 0;
|
|
|
|
if ((oldflags & ~EXT4_IMMUTABLE_FL) != (flags & ~EXT4_IMMUTABLE_FL))
|
|
return -EPERM;
|
|
if (ext4_has_feature_project(inode->i_sb) &&
|
|
__kprojid_val(ei->i_projid) != new_projid)
|
|
return -EPERM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ext4_ioctl_setflags(struct inode *inode,
|
|
unsigned int flags)
|
|
{
|
|
struct ext4_inode_info *ei = EXT4_I(inode);
|
|
handle_t *handle = NULL;
|
|
int err = -EPERM, migrate = 0;
|
|
struct ext4_iloc iloc;
|
|
unsigned int oldflags, mask, i;
|
|
unsigned int jflag;
|
|
struct super_block *sb = inode->i_sb;
|
|
|
|
/* Is it quota file? Do not allow user to mess with it */
|
|
if (ext4_is_quota_file(inode))
|
|
goto flags_out;
|
|
|
|
oldflags = ei->i_flags;
|
|
|
|
/* The JOURNAL_DATA flag is modifiable only by root */
|
|
jflag = flags & EXT4_JOURNAL_DATA_FL;
|
|
|
|
err = vfs_ioc_setflags_prepare(inode, oldflags, flags);
|
|
if (err)
|
|
goto flags_out;
|
|
|
|
/*
|
|
* The JOURNAL_DATA flag can only be changed by
|
|
* the relevant capability.
|
|
*/
|
|
if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
|
|
if (!capable(CAP_SYS_RESOURCE))
|
|
goto flags_out;
|
|
}
|
|
if ((flags ^ oldflags) & EXT4_EXTENTS_FL)
|
|
migrate = 1;
|
|
|
|
if (flags & EXT4_EOFBLOCKS_FL) {
|
|
/* we don't support adding EOFBLOCKS flag */
|
|
if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
|
|
err = -EOPNOTSUPP;
|
|
goto flags_out;
|
|
}
|
|
} else if (oldflags & EXT4_EOFBLOCKS_FL) {
|
|
err = ext4_truncate(inode);
|
|
if (err)
|
|
goto flags_out;
|
|
}
|
|
|
|
if ((flags ^ oldflags) & EXT4_CASEFOLD_FL) {
|
|
if (!ext4_has_feature_casefold(sb)) {
|
|
err = -EOPNOTSUPP;
|
|
goto flags_out;
|
|
}
|
|
|
|
if (!S_ISDIR(inode->i_mode)) {
|
|
err = -ENOTDIR;
|
|
goto flags_out;
|
|
}
|
|
|
|
if (!ext4_empty_dir(inode)) {
|
|
err = -ENOTEMPTY;
|
|
goto flags_out;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Wait for all pending directio and then flush all the dirty pages
|
|
* for this file. The flush marks all the pages readonly, so any
|
|
* subsequent attempt to write to the file (particularly mmap pages)
|
|
* will come through the filesystem and fail.
|
|
*/
|
|
if (S_ISREG(inode->i_mode) && !IS_IMMUTABLE(inode) &&
|
|
(flags & EXT4_IMMUTABLE_FL)) {
|
|
inode_dio_wait(inode);
|
|
err = filemap_write_and_wait(inode->i_mapping);
|
|
if (err)
|
|
goto flags_out;
|
|
}
|
|
|
|
handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
|
|
if (IS_ERR(handle)) {
|
|
err = PTR_ERR(handle);
|
|
goto flags_out;
|
|
}
|
|
if (IS_SYNC(inode))
|
|
ext4_handle_sync(handle);
|
|
err = ext4_reserve_inode_write(handle, inode, &iloc);
|
|
if (err)
|
|
goto flags_err;
|
|
|
|
for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
|
|
if (!(mask & EXT4_FL_USER_MODIFIABLE))
|
|
continue;
|
|
/* These flags get special treatment later */
|
|
if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL)
|
|
continue;
|
|
if (mask & flags)
|
|
ext4_set_inode_flag(inode, i);
|
|
else
|
|
ext4_clear_inode_flag(inode, i);
|
|
}
|
|
|
|
ext4_set_inode_flags(inode);
|
|
inode->i_ctime = current_time(inode);
|
|
|
|
err = ext4_mark_iloc_dirty(handle, inode, &iloc);
|
|
flags_err:
|
|
ext4_journal_stop(handle);
|
|
if (err)
|
|
goto flags_out;
|
|
|
|
if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
|
|
/*
|
|
* Changes to the journaling mode can cause unsafe changes to
|
|
* S_DAX if we are using the DAX mount option.
|
|
*/
|
|
if (test_opt(inode->i_sb, DAX)) {
|
|
err = -EBUSY;
|
|
goto flags_out;
|
|
}
|
|
|
|
err = ext4_change_inode_journal_flag(inode, jflag);
|
|
if (err)
|
|
goto flags_out;
|
|
}
|
|
if (migrate) {
|
|
if (flags & EXT4_EXTENTS_FL)
|
|
err = ext4_ext_migrate(inode);
|
|
else
|
|
err = ext4_ind_migrate(inode);
|
|
}
|
|
|
|
flags_out:
|
|
return err;
|
|
}
|
|
|
|
#ifdef CONFIG_QUOTA
|
|
static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
|
|
{
|
|
struct inode *inode = file_inode(filp);
|
|
struct super_block *sb = inode->i_sb;
|
|
struct ext4_inode_info *ei = EXT4_I(inode);
|
|
int err, rc;
|
|
handle_t *handle;
|
|
kprojid_t kprojid;
|
|
struct ext4_iloc iloc;
|
|
struct ext4_inode *raw_inode;
|
|
struct dquot *transfer_to[MAXQUOTAS] = { };
|
|
|
|
if (!ext4_has_feature_project(sb)) {
|
|
if (projid != EXT4_DEF_PROJID)
|
|
return -EOPNOTSUPP;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE)
|
|
return -EOPNOTSUPP;
|
|
|
|
kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
|
|
|
|
if (projid_eq(kprojid, EXT4_I(inode)->i_projid))
|
|
return 0;
|
|
|
|
err = -EPERM;
|
|
/* Is it quota file? Do not allow user to mess with it */
|
|
if (ext4_is_quota_file(inode))
|
|
return err;
|
|
|
|
err = dquot_initialize(inode);
|
|
if (err)
|
|
return err;
|
|
|
|
err = ext4_get_inode_loc(inode, &iloc);
|
|
if (err)
|
|
return err;
|
|
|
|
raw_inode = ext4_raw_inode(&iloc);
|
|
if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) {
|
|
err = ext4_expand_extra_isize(inode,
|
|
EXT4_SB(sb)->s_want_extra_isize,
|
|
&iloc);
|
|
if (err)
|
|
return err;
|
|
} else {
|
|
brelse(iloc.bh);
|
|
}
|
|
|
|
handle = ext4_journal_start(inode, EXT4_HT_QUOTA,
|
|
EXT4_QUOTA_INIT_BLOCKS(sb) +
|
|
EXT4_QUOTA_DEL_BLOCKS(sb) + 3);
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
|
|
err = ext4_reserve_inode_write(handle, inode, &iloc);
|
|
if (err)
|
|
goto out_stop;
|
|
|
|
transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
|
|
if (!IS_ERR(transfer_to[PRJQUOTA])) {
|
|
|
|
/* __dquot_transfer() calls back ext4_get_inode_usage() which
|
|
* counts xattr inode references.
|
|
*/
|
|
down_read(&EXT4_I(inode)->xattr_sem);
|
|
err = __dquot_transfer(inode, transfer_to);
|
|
up_read(&EXT4_I(inode)->xattr_sem);
|
|
dqput(transfer_to[PRJQUOTA]);
|
|
if (err)
|
|
goto out_dirty;
|
|
}
|
|
|
|
EXT4_I(inode)->i_projid = kprojid;
|
|
inode->i_ctime = current_time(inode);
|
|
out_dirty:
|
|
rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
|
|
if (!err)
|
|
err = rc;
|
|
out_stop:
|
|
ext4_journal_stop(handle);
|
|
return err;
|
|
}
|
|
#else
|
|
static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
|
|
{
|
|
if (projid != EXT4_DEF_PROJID)
|
|
return -EOPNOTSUPP;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* Transfer internal flags to xflags */
|
|
static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
|
|
{
|
|
__u32 xflags = 0;
|
|
|
|
if (iflags & EXT4_SYNC_FL)
|
|
xflags |= FS_XFLAG_SYNC;
|
|
if (iflags & EXT4_IMMUTABLE_FL)
|
|
xflags |= FS_XFLAG_IMMUTABLE;
|
|
if (iflags & EXT4_APPEND_FL)
|
|
xflags |= FS_XFLAG_APPEND;
|
|
if (iflags & EXT4_NODUMP_FL)
|
|
xflags |= FS_XFLAG_NODUMP;
|
|
if (iflags & EXT4_NOATIME_FL)
|
|
xflags |= FS_XFLAG_NOATIME;
|
|
if (iflags & EXT4_PROJINHERIT_FL)
|
|
xflags |= FS_XFLAG_PROJINHERIT;
|
|
return xflags;
|
|
}
|
|
|
|
#define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \
|
|
FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \
|
|
FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT)
|
|
|
|
/* Transfer xflags flags to internal */
|
|
static inline unsigned long ext4_xflags_to_iflags(__u32 xflags)
|
|
{
|
|
unsigned long iflags = 0;
|
|
|
|
if (xflags & FS_XFLAG_SYNC)
|
|
iflags |= EXT4_SYNC_FL;
|
|
if (xflags & FS_XFLAG_IMMUTABLE)
|
|
iflags |= EXT4_IMMUTABLE_FL;
|
|
if (xflags & FS_XFLAG_APPEND)
|
|
iflags |= EXT4_APPEND_FL;
|
|
if (xflags & FS_XFLAG_NODUMP)
|
|
iflags |= EXT4_NODUMP_FL;
|
|
if (xflags & FS_XFLAG_NOATIME)
|
|
iflags |= EXT4_NOATIME_FL;
|
|
if (xflags & FS_XFLAG_PROJINHERIT)
|
|
iflags |= EXT4_PROJINHERIT_FL;
|
|
|
|
return iflags;
|
|
}
|
|
|
|
static int ext4_shutdown(struct super_block *sb, unsigned long arg)
|
|
{
|
|
struct ext4_sb_info *sbi = EXT4_SB(sb);
|
|
__u32 flags;
|
|
struct super_block *ret;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (get_user(flags, (__u32 __user *)arg))
|
|
return -EFAULT;
|
|
|
|
if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH)
|
|
return -EINVAL;
|
|
|
|
if (ext4_forced_shutdown(sbi))
|
|
return 0;
|
|
|
|
ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags);
|
|
trace_ext4_shutdown(sb, flags);
|
|
|
|
switch (flags) {
|
|
case EXT4_GOING_FLAGS_DEFAULT:
|
|
ret = freeze_bdev(sb->s_bdev);
|
|
if (IS_ERR(ret))
|
|
return PTR_ERR(ret);
|
|
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
|
|
thaw_bdev(sb->s_bdev, sb);
|
|
break;
|
|
case EXT4_GOING_FLAGS_LOGFLUSH:
|
|
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
|
|
if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) {
|
|
(void) ext4_force_commit(sb);
|
|
jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN);
|
|
}
|
|
break;
|
|
case EXT4_GOING_FLAGS_NOLOGFLUSH:
|
|
set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
|
|
if (sbi->s_journal && !is_journal_aborted(sbi->s_journal))
|
|
jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
clear_opt(sb, DISCARD);
|
|
return 0;
|
|
}
|
|
|
|
struct getfsmap_info {
|
|
struct super_block *gi_sb;
|
|
struct fsmap_head __user *gi_data;
|
|
unsigned int gi_idx;
|
|
__u32 gi_last_flags;
|
|
};
|
|
|
|
static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv)
|
|
{
|
|
struct getfsmap_info *info = priv;
|
|
struct fsmap fm;
|
|
|
|
trace_ext4_getfsmap_mapping(info->gi_sb, xfm);
|
|
|
|
info->gi_last_flags = xfm->fmr_flags;
|
|
ext4_fsmap_from_internal(info->gi_sb, &fm, xfm);
|
|
if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm,
|
|
sizeof(struct fsmap)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ext4_ioc_getfsmap(struct super_block *sb,
|
|
struct fsmap_head __user *arg)
|
|
{
|
|
struct getfsmap_info info = { NULL };
|
|
struct ext4_fsmap_head xhead = {0};
|
|
struct fsmap_head head;
|
|
bool aborted = false;
|
|
int error;
|
|
|
|
if (copy_from_user(&head, arg, sizeof(struct fsmap_head)))
|
|
return -EFAULT;
|
|
if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) ||
|
|
memchr_inv(head.fmh_keys[0].fmr_reserved, 0,
|
|
sizeof(head.fmh_keys[0].fmr_reserved)) ||
|
|
memchr_inv(head.fmh_keys[1].fmr_reserved, 0,
|
|
sizeof(head.fmh_keys[1].fmr_reserved)))
|
|
return -EINVAL;
|
|
/*
|
|
* ext4 doesn't report file extents at all, so the only valid
|
|
* file offsets are the magic ones (all zeroes or all ones).
|
|
*/
|
|
if (head.fmh_keys[0].fmr_offset ||
|
|
(head.fmh_keys[1].fmr_offset != 0 &&
|
|
head.fmh_keys[1].fmr_offset != -1ULL))
|
|
return -EINVAL;
|
|
|
|
xhead.fmh_iflags = head.fmh_iflags;
|
|
xhead.fmh_count = head.fmh_count;
|
|
ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]);
|
|
ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]);
|
|
|
|
trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]);
|
|
trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]);
|
|
|
|
info.gi_sb = sb;
|
|
info.gi_data = arg;
|
|
error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info);
|
|
if (error == EXT4_QUERY_RANGE_ABORT) {
|
|
error = 0;
|
|
aborted = true;
|
|
} else if (error)
|
|
return error;
|
|
|
|
/* If we didn't abort, set the "last" flag in the last fmx */
|
|
if (!aborted && info.gi_idx) {
|
|
info.gi_last_flags |= FMR_OF_LAST;
|
|
if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags,
|
|
&info.gi_last_flags,
|
|
sizeof(info.gi_last_flags)))
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* copy back header */
|
|
head.fmh_entries = xhead.fmh_entries;
|
|
head.fmh_oflags = xhead.fmh_oflags;
|
|
if (copy_to_user(arg, &head, sizeof(struct fsmap_head)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static long ext4_ioctl_group_add(struct file *file,
|
|
struct ext4_new_group_data *input)
|
|
{
|
|
struct super_block *sb = file_inode(file)->i_sb;
|
|
int err, err2=0;
|
|
|
|
err = ext4_resize_begin(sb);
|
|
if (err)
|
|
return err;
|
|
|
|
if (ext4_has_feature_bigalloc(sb)) {
|
|
ext4_msg(sb, KERN_ERR,
|
|
"Online resizing not supported with bigalloc");
|
|
err = -EOPNOTSUPP;
|
|
goto group_add_out;
|
|
}
|
|
|
|
err = mnt_want_write_file(file);
|
|
if (err)
|
|
goto group_add_out;
|
|
|
|
err = ext4_group_add(sb, input);
|
|
if (EXT4_SB(sb)->s_journal) {
|
|
jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
|
|
err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
|
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
|
|
}
|
|
if (err == 0)
|
|
err = err2;
|
|
mnt_drop_write_file(file);
|
|
if (!err && ext4_has_group_desc_csum(sb) &&
|
|
test_opt(sb, INIT_INODE_TABLE))
|
|
err = ext4_register_li_request(sb, input->group);
|
|
group_add_out:
|
|
ext4_resize_end(sb);
|
|
return err;
|
|
}
|
|
|
|
static void ext4_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
|
|
{
|
|
struct ext4_inode_info *ei = EXT4_I(inode);
|
|
|
|
simple_fill_fsxattr(fa, ext4_iflags_to_xflags(ei->i_flags &
|
|
EXT4_FL_USER_VISIBLE));
|
|
|
|
if (ext4_has_feature_project(inode->i_sb))
|
|
fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid);
|
|
}
|
|
|
|
/* copied from fs/ioctl.c */
|
|
static int fiemap_check_ranges(struct super_block *sb,
|
|
u64 start, u64 len, u64 *new_len)
|
|
{
|
|
u64 maxbytes = (u64) sb->s_maxbytes;
|
|
|
|
*new_len = len;
|
|
|
|
if (len == 0)
|
|
return -EINVAL;
|
|
|
|
if (start > maxbytes)
|
|
return -EFBIG;
|
|
|
|
/*
|
|
* Shrink request scope to what the fs can actually handle.
|
|
*/
|
|
if (len > maxbytes || (maxbytes - len) < start)
|
|
*new_len = maxbytes - start;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* So that the fiemap access checks can't overflow on 32 bit machines. */
|
|
#define FIEMAP_MAX_EXTENTS (UINT_MAX / sizeof(struct fiemap_extent))
|
|
|
|
static int ext4_ioctl_get_es_cache(struct file *filp, unsigned long arg)
|
|
{
|
|
struct fiemap fiemap;
|
|
struct fiemap __user *ufiemap = (struct fiemap __user *) arg;
|
|
struct fiemap_extent_info fieinfo = { 0, };
|
|
struct inode *inode = file_inode(filp);
|
|
struct super_block *sb = inode->i_sb;
|
|
u64 len;
|
|
int error;
|
|
|
|
if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap)))
|
|
return -EFAULT;
|
|
|
|
if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS)
|
|
return -EINVAL;
|
|
|
|
error = fiemap_check_ranges(sb, fiemap.fm_start, fiemap.fm_length,
|
|
&len);
|
|
if (error)
|
|
return error;
|
|
|
|
fieinfo.fi_flags = fiemap.fm_flags;
|
|
fieinfo.fi_extents_max = fiemap.fm_extent_count;
|
|
fieinfo.fi_extents_start = ufiemap->fm_extents;
|
|
|
|
if (fiemap.fm_extent_count != 0 &&
|
|
!access_ok(fieinfo.fi_extents_start,
|
|
fieinfo.fi_extents_max * sizeof(struct fiemap_extent)))
|
|
return -EFAULT;
|
|
|
|
if (fieinfo.fi_flags & FIEMAP_FLAG_SYNC)
|
|
filemap_write_and_wait(inode->i_mapping);
|
|
|
|
error = ext4_get_es_cache(inode, &fieinfo, fiemap.fm_start, len);
|
|
fiemap.fm_flags = fieinfo.fi_flags;
|
|
fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped;
|
|
if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap)))
|
|
error = -EFAULT;
|
|
|
|
return error;
|
|
}
|
|
|
|
long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct inode *inode = file_inode(filp);
|
|
struct super_block *sb = inode->i_sb;
|
|
struct ext4_inode_info *ei = EXT4_I(inode);
|
|
unsigned int flags;
|
|
|
|
ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
|
|
|
|
switch (cmd) {
|
|
case FS_IOC_GETFSMAP:
|
|
return ext4_ioc_getfsmap(sb, (void __user *)arg);
|
|
case EXT4_IOC_GETFLAGS:
|
|
flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
|
|
if (S_ISREG(inode->i_mode))
|
|
flags &= ~EXT4_PROJINHERIT_FL;
|
|
return put_user(flags, (int __user *) arg);
|
|
case EXT4_IOC_SETFLAGS: {
|
|
int err;
|
|
|
|
if (!inode_owner_or_capable(inode))
|
|
return -EACCES;
|
|
|
|
if (get_user(flags, (int __user *) arg))
|
|
return -EFAULT;
|
|
|
|
if (flags & ~EXT4_FL_USER_VISIBLE)
|
|
return -EOPNOTSUPP;
|
|
/*
|
|
* chattr(1) grabs flags via GETFLAGS, modifies the result and
|
|
* passes that to SETFLAGS. So we cannot easily make SETFLAGS
|
|
* more restrictive than just silently masking off visible but
|
|
* not settable flags as we always did.
|
|
*/
|
|
flags &= EXT4_FL_USER_MODIFIABLE;
|
|
if (ext4_mask_flags(inode->i_mode, flags) != flags)
|
|
return -EOPNOTSUPP;
|
|
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
return err;
|
|
|
|
inode_lock(inode);
|
|
err = ext4_ioctl_check_immutable(inode,
|
|
from_kprojid(&init_user_ns, ei->i_projid),
|
|
flags);
|
|
if (!err)
|
|
err = ext4_ioctl_setflags(inode, flags);
|
|
inode_unlock(inode);
|
|
mnt_drop_write_file(filp);
|
|
return err;
|
|
}
|
|
case EXT4_IOC_GETVERSION:
|
|
case EXT4_IOC_GETVERSION_OLD:
|
|
return put_user(inode->i_generation, (int __user *) arg);
|
|
case EXT4_IOC_SETVERSION:
|
|
case EXT4_IOC_SETVERSION_OLD: {
|
|
handle_t *handle;
|
|
struct ext4_iloc iloc;
|
|
__u32 generation;
|
|
int err;
|
|
|
|
if (!inode_owner_or_capable(inode))
|
|
return -EPERM;
|
|
|
|
if (ext4_has_metadata_csum(inode->i_sb)) {
|
|
ext4_warning(sb, "Setting inode version is not "
|
|
"supported with metadata_csum enabled.");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
return err;
|
|
if (get_user(generation, (int __user *) arg)) {
|
|
err = -EFAULT;
|
|
goto setversion_out;
|
|
}
|
|
|
|
inode_lock(inode);
|
|
handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
|
|
if (IS_ERR(handle)) {
|
|
err = PTR_ERR(handle);
|
|
goto unlock_out;
|
|
}
|
|
err = ext4_reserve_inode_write(handle, inode, &iloc);
|
|
if (err == 0) {
|
|
inode->i_ctime = current_time(inode);
|
|
inode->i_generation = generation;
|
|
err = ext4_mark_iloc_dirty(handle, inode, &iloc);
|
|
}
|
|
ext4_journal_stop(handle);
|
|
|
|
unlock_out:
|
|
inode_unlock(inode);
|
|
setversion_out:
|
|
mnt_drop_write_file(filp);
|
|
return err;
|
|
}
|
|
case EXT4_IOC_GROUP_EXTEND: {
|
|
ext4_fsblk_t n_blocks_count;
|
|
int err, err2=0;
|
|
|
|
err = ext4_resize_begin(sb);
|
|
if (err)
|
|
return err;
|
|
|
|
if (get_user(n_blocks_count, (__u32 __user *)arg)) {
|
|
err = -EFAULT;
|
|
goto group_extend_out;
|
|
}
|
|
|
|
if (ext4_has_feature_bigalloc(sb)) {
|
|
ext4_msg(sb, KERN_ERR,
|
|
"Online resizing not supported with bigalloc");
|
|
err = -EOPNOTSUPP;
|
|
goto group_extend_out;
|
|
}
|
|
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
goto group_extend_out;
|
|
|
|
err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
|
|
if (EXT4_SB(sb)->s_journal) {
|
|
jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
|
|
err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
|
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
|
|
}
|
|
if (err == 0)
|
|
err = err2;
|
|
mnt_drop_write_file(filp);
|
|
group_extend_out:
|
|
ext4_resize_end(sb);
|
|
return err;
|
|
}
|
|
|
|
case EXT4_IOC_MOVE_EXT: {
|
|
struct move_extent me;
|
|
struct fd donor;
|
|
int err;
|
|
|
|
if (!(filp->f_mode & FMODE_READ) ||
|
|
!(filp->f_mode & FMODE_WRITE))
|
|
return -EBADF;
|
|
|
|
if (copy_from_user(&me,
|
|
(struct move_extent __user *)arg, sizeof(me)))
|
|
return -EFAULT;
|
|
me.moved_len = 0;
|
|
|
|
donor = fdget(me.donor_fd);
|
|
if (!donor.file)
|
|
return -EBADF;
|
|
|
|
if (!(donor.file->f_mode & FMODE_WRITE)) {
|
|
err = -EBADF;
|
|
goto mext_out;
|
|
}
|
|
|
|
if (ext4_has_feature_bigalloc(sb)) {
|
|
ext4_msg(sb, KERN_ERR,
|
|
"Online defrag not supported with bigalloc");
|
|
err = -EOPNOTSUPP;
|
|
goto mext_out;
|
|
} else if (IS_DAX(inode)) {
|
|
ext4_msg(sb, KERN_ERR,
|
|
"Online defrag not supported with DAX");
|
|
err = -EOPNOTSUPP;
|
|
goto mext_out;
|
|
}
|
|
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
goto mext_out;
|
|
|
|
err = ext4_move_extents(filp, donor.file, me.orig_start,
|
|
me.donor_start, me.len, &me.moved_len);
|
|
mnt_drop_write_file(filp);
|
|
|
|
if (copy_to_user((struct move_extent __user *)arg,
|
|
&me, sizeof(me)))
|
|
err = -EFAULT;
|
|
mext_out:
|
|
fdput(donor);
|
|
return err;
|
|
}
|
|
|
|
case EXT4_IOC_GROUP_ADD: {
|
|
struct ext4_new_group_data input;
|
|
|
|
if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
|
|
sizeof(input)))
|
|
return -EFAULT;
|
|
|
|
return ext4_ioctl_group_add(filp, &input);
|
|
}
|
|
|
|
case EXT4_IOC_MIGRATE:
|
|
{
|
|
int err;
|
|
if (!inode_owner_or_capable(inode))
|
|
return -EACCES;
|
|
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
return err;
|
|
/*
|
|
* inode_mutex prevent write and truncate on the file.
|
|
* Read still goes through. We take i_data_sem in
|
|
* ext4_ext_swap_inode_data before we switch the
|
|
* inode format to prevent read.
|
|
*/
|
|
inode_lock((inode));
|
|
err = ext4_ext_migrate(inode);
|
|
inode_unlock((inode));
|
|
mnt_drop_write_file(filp);
|
|
return err;
|
|
}
|
|
|
|
case EXT4_IOC_ALLOC_DA_BLKS:
|
|
{
|
|
int err;
|
|
if (!inode_owner_or_capable(inode))
|
|
return -EACCES;
|
|
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
return err;
|
|
err = ext4_alloc_da_blocks(inode);
|
|
mnt_drop_write_file(filp);
|
|
return err;
|
|
}
|
|
|
|
case EXT4_IOC_SWAP_BOOT:
|
|
{
|
|
int err;
|
|
if (!(filp->f_mode & FMODE_WRITE))
|
|
return -EBADF;
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
return err;
|
|
err = swap_inode_boot_loader(sb, inode);
|
|
mnt_drop_write_file(filp);
|
|
return err;
|
|
}
|
|
|
|
case EXT4_IOC_RESIZE_FS: {
|
|
ext4_fsblk_t n_blocks_count;
|
|
int err = 0, err2 = 0;
|
|
ext4_group_t o_group = EXT4_SB(sb)->s_groups_count;
|
|
|
|
if (copy_from_user(&n_blocks_count, (__u64 __user *)arg,
|
|
sizeof(__u64))) {
|
|
return -EFAULT;
|
|
}
|
|
|
|
err = ext4_resize_begin(sb);
|
|
if (err)
|
|
return err;
|
|
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
goto resizefs_out;
|
|
|
|
err = ext4_resize_fs(sb, n_blocks_count);
|
|
if (EXT4_SB(sb)->s_journal) {
|
|
jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
|
|
err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
|
|
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
|
|
}
|
|
if (err == 0)
|
|
err = err2;
|
|
mnt_drop_write_file(filp);
|
|
if (!err && (o_group < EXT4_SB(sb)->s_groups_count) &&
|
|
ext4_has_group_desc_csum(sb) &&
|
|
test_opt(sb, INIT_INODE_TABLE))
|
|
err = ext4_register_li_request(sb, o_group);
|
|
|
|
resizefs_out:
|
|
ext4_resize_end(sb);
|
|
return err;
|
|
}
|
|
|
|
case FITRIM:
|
|
{
|
|
struct request_queue *q = bdev_get_queue(sb->s_bdev);
|
|
struct fstrim_range range;
|
|
int ret = 0;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (!blk_queue_discard(q))
|
|
return -EOPNOTSUPP;
|
|
|
|
/*
|
|
* We haven't replayed the journal, so we cannot use our
|
|
* block-bitmap-guided storage zapping commands.
|
|
*/
|
|
if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb))
|
|
return -EROFS;
|
|
|
|
if (copy_from_user(&range, (struct fstrim_range __user *)arg,
|
|
sizeof(range)))
|
|
return -EFAULT;
|
|
|
|
ret = ext4_trim_fs(sb, &range);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (copy_to_user((struct fstrim_range __user *)arg, &range,
|
|
sizeof(range)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
case EXT4_IOC_PRECACHE_EXTENTS:
|
|
return ext4_ext_precache(inode);
|
|
|
|
case EXT4_IOC_SET_ENCRYPTION_POLICY:
|
|
if (!ext4_has_feature_encrypt(sb))
|
|
return -EOPNOTSUPP;
|
|
return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
|
|
|
|
case EXT4_IOC_GET_ENCRYPTION_PWSALT: {
|
|
#ifdef CONFIG_FS_ENCRYPTION
|
|
int err, err2;
|
|
struct ext4_sb_info *sbi = EXT4_SB(sb);
|
|
handle_t *handle;
|
|
|
|
if (!ext4_has_feature_encrypt(sb))
|
|
return -EOPNOTSUPP;
|
|
if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) {
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
return err;
|
|
handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1);
|
|
if (IS_ERR(handle)) {
|
|
err = PTR_ERR(handle);
|
|
goto pwsalt_err_exit;
|
|
}
|
|
err = ext4_journal_get_write_access(handle, sbi->s_sbh);
|
|
if (err)
|
|
goto pwsalt_err_journal;
|
|
lock_buffer(sbi->s_sbh);
|
|
generate_random_uuid(sbi->s_es->s_encrypt_pw_salt);
|
|
ext4_superblock_csum_set(sb);
|
|
unlock_buffer(sbi->s_sbh);
|
|
err = ext4_handle_dirty_metadata(handle, NULL,
|
|
sbi->s_sbh);
|
|
pwsalt_err_journal:
|
|
err2 = ext4_journal_stop(handle);
|
|
if (err2 && !err)
|
|
err = err2;
|
|
pwsalt_err_exit:
|
|
mnt_drop_write_file(filp);
|
|
if (err)
|
|
return err;
|
|
}
|
|
if (copy_to_user((void __user *) arg,
|
|
sbi->s_es->s_encrypt_pw_salt, 16))
|
|
return -EFAULT;
|
|
return 0;
|
|
#else
|
|
return -EOPNOTSUPP;
|
|
#endif
|
|
}
|
|
case EXT4_IOC_GET_ENCRYPTION_POLICY:
|
|
if (!ext4_has_feature_encrypt(sb))
|
|
return -EOPNOTSUPP;
|
|
return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
|
|
|
|
case FS_IOC_GET_ENCRYPTION_POLICY_EX:
|
|
if (!ext4_has_feature_encrypt(sb))
|
|
return -EOPNOTSUPP;
|
|
return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
|
|
|
|
case FS_IOC_ADD_ENCRYPTION_KEY:
|
|
if (!ext4_has_feature_encrypt(sb))
|
|
return -EOPNOTSUPP;
|
|
return fscrypt_ioctl_add_key(filp, (void __user *)arg);
|
|
|
|
case FS_IOC_REMOVE_ENCRYPTION_KEY:
|
|
if (!ext4_has_feature_encrypt(sb))
|
|
return -EOPNOTSUPP;
|
|
return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
|
|
|
|
case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
|
|
if (!ext4_has_feature_encrypt(sb))
|
|
return -EOPNOTSUPP;
|
|
return fscrypt_ioctl_remove_key_all_users(filp,
|
|
(void __user *)arg);
|
|
case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
|
|
if (!ext4_has_feature_encrypt(sb))
|
|
return -EOPNOTSUPP;
|
|
return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
|
|
|
|
case FS_IOC_GET_ENCRYPTION_NONCE:
|
|
if (!ext4_has_feature_encrypt(sb))
|
|
return -EOPNOTSUPP;
|
|
return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
|
|
|
|
case EXT4_IOC_CLEAR_ES_CACHE:
|
|
{
|
|
if (!inode_owner_or_capable(inode))
|
|
return -EACCES;
|
|
ext4_clear_inode_es(inode);
|
|
return 0;
|
|
}
|
|
|
|
case EXT4_IOC_GETSTATE:
|
|
{
|
|
__u32 state = 0;
|
|
|
|
if (ext4_test_inode_state(inode, EXT4_STATE_EXT_PRECACHED))
|
|
state |= EXT4_STATE_FLAG_EXT_PRECACHED;
|
|
if (ext4_test_inode_state(inode, EXT4_STATE_NEW))
|
|
state |= EXT4_STATE_FLAG_NEW;
|
|
if (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY))
|
|
state |= EXT4_STATE_FLAG_NEWENTRY;
|
|
if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE))
|
|
state |= EXT4_STATE_FLAG_DA_ALLOC_CLOSE;
|
|
|
|
return put_user(state, (__u32 __user *) arg);
|
|
}
|
|
|
|
case EXT4_IOC_GET_ES_CACHE:
|
|
return ext4_ioctl_get_es_cache(filp, arg);
|
|
|
|
case EXT4_IOC_FSGETXATTR:
|
|
{
|
|
struct fsxattr fa;
|
|
|
|
ext4_fill_fsxattr(inode, &fa);
|
|
|
|
if (copy_to_user((struct fsxattr __user *)arg,
|
|
&fa, sizeof(fa)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case EXT4_IOC_FSSETXATTR:
|
|
{
|
|
struct fsxattr fa, old_fa;
|
|
int err;
|
|
|
|
if (copy_from_user(&fa, (struct fsxattr __user *)arg,
|
|
sizeof(fa)))
|
|
return -EFAULT;
|
|
|
|
/* Make sure caller has proper permission */
|
|
if (!inode_owner_or_capable(inode))
|
|
return -EACCES;
|
|
|
|
if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS)
|
|
return -EOPNOTSUPP;
|
|
|
|
flags = ext4_xflags_to_iflags(fa.fsx_xflags);
|
|
if (ext4_mask_flags(inode->i_mode, flags) != flags)
|
|
return -EOPNOTSUPP;
|
|
|
|
err = mnt_want_write_file(filp);
|
|
if (err)
|
|
return err;
|
|
|
|
inode_lock(inode);
|
|
ext4_fill_fsxattr(inode, &old_fa);
|
|
err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
|
|
if (err)
|
|
goto out;
|
|
flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) |
|
|
(flags & EXT4_FL_XFLAG_VISIBLE);
|
|
err = ext4_ioctl_check_immutable(inode, fa.fsx_projid, flags);
|
|
if (err)
|
|
goto out;
|
|
err = ext4_ioctl_setflags(inode, flags);
|
|
if (err)
|
|
goto out;
|
|
err = ext4_ioctl_setproject(filp, fa.fsx_projid);
|
|
out:
|
|
inode_unlock(inode);
|
|
mnt_drop_write_file(filp);
|
|
return err;
|
|
}
|
|
case EXT4_IOC_SHUTDOWN:
|
|
return ext4_shutdown(sb, arg);
|
|
|
|
case FS_IOC_ENABLE_VERITY:
|
|
if (!ext4_has_feature_verity(sb))
|
|
return -EOPNOTSUPP;
|
|
return fsverity_ioctl_enable(filp, (const void __user *)arg);
|
|
|
|
case FS_IOC_MEASURE_VERITY:
|
|
if (!ext4_has_feature_verity(sb))
|
|
return -EOPNOTSUPP;
|
|
return fsverity_ioctl_measure(filp, (void __user *)arg);
|
|
|
|
default:
|
|
return -ENOTTY;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
/* These are just misnamed, they actually get/put from/to user an int */
|
|
switch (cmd) {
|
|
case EXT4_IOC32_GETFLAGS:
|
|
cmd = EXT4_IOC_GETFLAGS;
|
|
break;
|
|
case EXT4_IOC32_SETFLAGS:
|
|
cmd = EXT4_IOC_SETFLAGS;
|
|
break;
|
|
case EXT4_IOC32_GETVERSION:
|
|
cmd = EXT4_IOC_GETVERSION;
|
|
break;
|
|
case EXT4_IOC32_SETVERSION:
|
|
cmd = EXT4_IOC_SETVERSION;
|
|
break;
|
|
case EXT4_IOC32_GROUP_EXTEND:
|
|
cmd = EXT4_IOC_GROUP_EXTEND;
|
|
break;
|
|
case EXT4_IOC32_GETVERSION_OLD:
|
|
cmd = EXT4_IOC_GETVERSION_OLD;
|
|
break;
|
|
case EXT4_IOC32_SETVERSION_OLD:
|
|
cmd = EXT4_IOC_SETVERSION_OLD;
|
|
break;
|
|
case EXT4_IOC32_GETRSVSZ:
|
|
cmd = EXT4_IOC_GETRSVSZ;
|
|
break;
|
|
case EXT4_IOC32_SETRSVSZ:
|
|
cmd = EXT4_IOC_SETRSVSZ;
|
|
break;
|
|
case EXT4_IOC32_GROUP_ADD: {
|
|
struct compat_ext4_new_group_input __user *uinput;
|
|
struct ext4_new_group_data input;
|
|
int err;
|
|
|
|
uinput = compat_ptr(arg);
|
|
err = get_user(input.group, &uinput->group);
|
|
err |= get_user(input.block_bitmap, &uinput->block_bitmap);
|
|
err |= get_user(input.inode_bitmap, &uinput->inode_bitmap);
|
|
err |= get_user(input.inode_table, &uinput->inode_table);
|
|
err |= get_user(input.blocks_count, &uinput->blocks_count);
|
|
err |= get_user(input.reserved_blocks,
|
|
&uinput->reserved_blocks);
|
|
if (err)
|
|
return -EFAULT;
|
|
return ext4_ioctl_group_add(file, &input);
|
|
}
|
|
case EXT4_IOC_MOVE_EXT:
|
|
case EXT4_IOC_RESIZE_FS:
|
|
case EXT4_IOC_PRECACHE_EXTENTS:
|
|
case EXT4_IOC_SET_ENCRYPTION_POLICY:
|
|
case EXT4_IOC_GET_ENCRYPTION_PWSALT:
|
|
case EXT4_IOC_GET_ENCRYPTION_POLICY:
|
|
case FS_IOC_GET_ENCRYPTION_POLICY_EX:
|
|
case FS_IOC_ADD_ENCRYPTION_KEY:
|
|
case FS_IOC_REMOVE_ENCRYPTION_KEY:
|
|
case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
|
|
case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
|
|
case FS_IOC_GET_ENCRYPTION_NONCE:
|
|
case EXT4_IOC_SHUTDOWN:
|
|
case FS_IOC_GETFSMAP:
|
|
case FS_IOC_ENABLE_VERITY:
|
|
case FS_IOC_MEASURE_VERITY:
|
|
case EXT4_IOC_CLEAR_ES_CACHE:
|
|
case EXT4_IOC_GETSTATE:
|
|
case EXT4_IOC_GET_ES_CACHE:
|
|
case EXT4_IOC_FSGETXATTR:
|
|
case EXT4_IOC_FSSETXATTR:
|
|
break;
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
|
|
}
|
|
#endif
|