^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This software may be freely redistributed under the terms of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * GNU General Public License.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * You should have received a copy of the GNU General Public License
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * along with this program; if not, write to the Free Software
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Authors: David Woodhouse <dwmw2@infradead.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * David Howells <dhowells@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/namei.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/iversion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "afs_fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static const struct inode_operations afs_symlink_inode_operations = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) .get_link = page_get_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static noinline void dump_vnode(struct afs_vnode *vnode, struct afs_vnode *parent_vnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static unsigned long once_only;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) pr_warn("kAFS: AFS vnode with undefined type %u\n", vnode->status.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) pr_warn("kAFS: A=%d m=%o s=%llx v=%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) vnode->status.abort_code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) vnode->status.mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) vnode->status.size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) vnode->status.data_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) pr_warn("kAFS: vnode %llx:%llx:%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) vnode->fid.vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) vnode->fid.vnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) vnode->fid.unique);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (parent_vnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) pr_warn("kAFS: dir %llx:%llx:%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) parent_vnode->fid.vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) parent_vnode->fid.vnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) parent_vnode->fid.unique);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (!test_and_set_bit(0, &once_only))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) dump_stack();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * Initialise an inode from the vnode status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static int afs_inode_init_from_status(struct afs_operation *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct afs_vnode_param *vp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct afs_vnode *vnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct afs_file_status *status = &vp->scb.status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct inode *inode = AFS_VNODE_TO_I(vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct timespec64 t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) _enter("{%llx:%llu.%u} %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) vp->fid.vid, vp->fid.vnode, vp->fid.unique,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) op->type ? op->type->name : "???");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) _debug("FS: ft=%d lk=%d sz=%llu ver=%Lu mod=%hu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) status->type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) status->nlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) (unsigned long long) status->size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) status->data_version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) status->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) write_seqlock(&vnode->cb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) vnode->cb_v_break = op->cb_v_break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) vnode->cb_s_break = op->cb_s_break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) vnode->status = *status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) t = status->mtime_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) inode->i_ctime = t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) inode->i_mtime = t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) inode->i_atime = t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) inode->i_flags |= S_NOATIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) inode->i_uid = make_kuid(&init_user_ns, status->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) inode->i_gid = make_kgid(&init_user_ns, status->group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) set_nlink(&vnode->vfs_inode, status->nlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) switch (status->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) case AFS_FTYPE_FILE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) inode->i_mode = S_IFREG | (status->mode & S_IALLUGO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) inode->i_op = &afs_file_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) inode->i_fop = &afs_file_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) inode->i_mapping->a_ops = &afs_fs_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) case AFS_FTYPE_DIR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) inode->i_mode = S_IFDIR | (status->mode & S_IALLUGO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) inode->i_op = &afs_dir_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) inode->i_fop = &afs_dir_file_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) inode->i_mapping->a_ops = &afs_dir_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) case AFS_FTYPE_SYMLINK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* Symlinks with a mode of 0644 are actually mountpoints. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if ((status->mode & 0777) == 0644) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) inode->i_flags |= S_AUTOMOUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) set_bit(AFS_VNODE_MOUNTPOINT, &vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) inode->i_mode = S_IFDIR | 0555;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) inode->i_op = &afs_mntpt_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) inode->i_fop = &afs_mntpt_file_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) inode->i_mapping->a_ops = &afs_fs_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) inode->i_mode = S_IFLNK | status->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) inode->i_op = &afs_symlink_inode_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) inode->i_mapping->a_ops = &afs_fs_aops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) inode_nohighmem(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) dump_vnode(vnode, op->file[0].vnode != vnode ? op->file[0].vnode : NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) write_sequnlock(&vnode->cb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return afs_protocol_error(NULL, afs_eproto_file_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) afs_set_i_size(vnode, status->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) vnode->invalid_before = status->data_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) inode_set_iversion_raw(&vnode->vfs_inode, status->data_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (!vp->scb.have_cb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) /* it's a symlink we just created (the fileserver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * didn't give us a callback) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) vnode->cb_expires_at = ktime_get_real_seconds();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) vnode->cb_expires_at = vp->scb.callback.expires_at;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) vnode->cb_server = op->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) write_sequnlock(&vnode->cb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * Update the core inode struct from a returned status record.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static void afs_apply_status(struct afs_operation *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct afs_vnode_param *vp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct afs_file_status *status = &vp->scb.status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct afs_vnode *vnode = vp->vnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct inode *inode = &vnode->vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct timespec64 t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) umode_t mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) bool data_changed = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) bool change_size = vp->set_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) _enter("{%llx:%llu.%u} %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) vp->fid.vid, vp->fid.vnode, vp->fid.unique,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) op->type ? op->type->name : "???");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) BUG_ON(test_bit(AFS_VNODE_UNSET, &vnode->flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (status->type != vnode->status.type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) pr_warn("Vnode %llx:%llx:%x changed type %u to %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) vnode->fid.vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) vnode->fid.vnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) vnode->fid.unique,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) status->type, vnode->status.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) afs_protocol_error(NULL, afs_eproto_bad_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (status->nlink != vnode->status.nlink)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) set_nlink(inode, status->nlink);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (status->owner != vnode->status.owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) inode->i_uid = make_kuid(&init_user_ns, status->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (status->group != vnode->status.group)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) inode->i_gid = make_kgid(&init_user_ns, status->group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (status->mode != vnode->status.mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) mode = inode->i_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) mode &= ~S_IALLUGO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) mode |= status->mode & S_IALLUGO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) WRITE_ONCE(inode->i_mode, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) t = status->mtime_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) inode->i_mtime = t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (vp->update_ctime)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) inode->i_ctime = op->ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (vnode->status.data_version != status->data_version)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) data_changed = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) vnode->status = *status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (vp->dv_before + vp->dv_delta != status->data_version) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) pr_warn("kAFS: vnode modified {%llx:%llu} %llx->%llx %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) vnode->fid.vid, vnode->fid.vnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) (unsigned long long)vp->dv_before + vp->dv_delta,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) (unsigned long long)status->data_version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) op->type ? op->type->name : "???");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) vnode->invalid_before = status->data_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (vnode->status.type == AFS_FTYPE_DIR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) afs_stat_v(vnode, n_inval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) change_size = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) } else if (vnode->status.type == AFS_FTYPE_DIR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /* Expected directory change is handled elsewhere so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * that we can locally edit the directory and save on a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * download.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) data_changed = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) change_size = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (data_changed) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) inode_set_iversion_raw(inode, status->data_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* Only update the size if the data version jumped. If the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * file is being modified locally, then we might have our own
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * idea of what the size should be that's not the same as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * what's on the server.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (change_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) afs_set_i_size(vnode, status->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) inode->i_ctime = t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) inode->i_atime = t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * Apply a callback to a vnode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static void afs_apply_callback(struct afs_operation *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) struct afs_vnode_param *vp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) struct afs_callback *cb = &vp->scb.callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) struct afs_vnode *vnode = vp->vnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (!afs_cb_is_broken(vp->cb_break_before, vnode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) vnode->cb_expires_at = cb->expires_at;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) vnode->cb_server = op->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * Apply the received status and callback to an inode all in the same critical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * section to avoid races with afs_validate().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) void afs_vnode_commit_status(struct afs_operation *op, struct afs_vnode_param *vp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) struct afs_vnode *vnode = vp->vnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) _enter("");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) write_seqlock(&vnode->cb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (vp->scb.have_error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) /* A YFS server will return this from RemoveFile2 and AFS and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * YFS will return this from InlineBulkStatus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (vp->scb.status.abort_code == VNOVNODE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) set_bit(AFS_VNODE_DELETED, &vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) clear_nlink(&vnode->vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) __afs_break_callback(vnode, afs_cb_break_for_deleted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) op->flags &= ~AFS_OPERATION_DIR_CONFLICT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) } else if (vp->scb.have_status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (vp->speculative &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) (test_bit(AFS_VNODE_MODIFYING, &vnode->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) vp->dv_before != vnode->status.data_version))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) /* Ignore the result of a speculative bulk status fetch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * if it splits around a modification op, thereby
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * appearing to regress the data version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) afs_apply_status(op, vp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) if (vp->scb.have_cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) afs_apply_callback(op, vp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) } else if (vp->op_unlinked && !(op->flags & AFS_OPERATION_DIR_CONFLICT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) drop_nlink(&vnode->vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (vnode->vfs_inode.i_nlink == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) set_bit(AFS_VNODE_DELETED, &vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) __afs_break_callback(vnode, afs_cb_break_for_deleted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) write_sequnlock(&vnode->cb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (vp->scb.have_status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) afs_cache_permit(vnode, op->key, vp->cb_break_before, &vp->scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static void afs_fetch_status_success(struct afs_operation *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) struct afs_vnode *vnode = vp->vnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (vnode->vfs_inode.i_state & I_NEW) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) ret = afs_inode_init_from_status(op, vp, vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) op->error = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (ret == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) afs_cache_permit(vnode, op->key, vp->cb_break_before, &vp->scb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) afs_vnode_commit_status(op, vp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) const struct afs_operation_ops afs_fetch_status_operation = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) .issue_afs_rpc = afs_fs_fetch_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) .issue_yfs_rpc = yfs_fs_fetch_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) .success = afs_fetch_status_success,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) .aborted = afs_check_for_remote_deletion,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) * Fetch file status from the volume.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) int afs_fetch_status(struct afs_vnode *vnode, struct key *key, bool is_new,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) afs_access_t *_caller_access)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) struct afs_operation *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) _enter("%s,{%llx:%llu.%u,S=%lx}",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) vnode->volume->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) op = afs_alloc_operation(key, vnode->volume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) if (IS_ERR(op))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) return PTR_ERR(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) afs_op_set_vnode(op, 0, vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) op->nr_files = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) op->ops = &afs_fetch_status_operation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) afs_begin_vnode_operation(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) afs_wait_for_operation(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (_caller_access)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) *_caller_access = op->file[0].scb.status.caller_access;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) return afs_put_operation(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) * ilookup() comparator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) int afs_ilookup5_test_by_fid(struct inode *inode, void *opaque)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct afs_vnode *vnode = AFS_FS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) struct afs_fid *fid = opaque;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) return (fid->vnode == vnode->fid.vnode &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) fid->vnode_hi == vnode->fid.vnode_hi &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) fid->unique == vnode->fid.unique);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) * iget5() comparator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static int afs_iget5_test(struct inode *inode, void *opaque)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct afs_vnode_param *vp = opaque;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) //struct afs_vnode *vnode = AFS_FS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) return afs_ilookup5_test_by_fid(inode, &vp->fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) * iget5() inode initialiser
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) static int afs_iget5_set(struct inode *inode, void *opaque)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) struct afs_vnode_param *vp = opaque;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) struct afs_super_info *as = AFS_FS_S(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) struct afs_vnode *vnode = AFS_FS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) vnode->volume = as->volume;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) vnode->fid = vp->fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) /* YFS supports 96-bit vnode IDs, but Linux only supports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * 64-bit inode numbers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) inode->i_ino = vnode->fid.vnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) inode->i_generation = vnode->fid.unique;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) * Get a cache cookie for an inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) static void afs_get_inode_cache(struct afs_vnode *vnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) #ifdef CONFIG_AFS_FSCACHE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) u32 vnode_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) u32 unique;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) u32 vnode_id_ext[2]; /* Allow for a 96-bit key */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) } __packed key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) struct afs_vnode_cache_aux aux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (vnode->status.type == AFS_FTYPE_DIR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) vnode->cache = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) key.vnode_id = vnode->fid.vnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) key.unique = vnode->fid.unique;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) key.vnode_id_ext[0] = vnode->fid.vnode >> 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) key.vnode_id_ext[1] = vnode->fid.vnode_hi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) aux.data_version = vnode->status.data_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) vnode->cache = fscache_acquire_cookie(vnode->volume->cache,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) &afs_vnode_cache_index_def,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) &key, sizeof(key),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) &aux, sizeof(aux),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) vnode, vnode->status.size, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) * inode retrieval
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) struct inode *afs_iget(struct afs_operation *op, struct afs_vnode_param *vp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) struct afs_vnode_param *dvp = &op->file[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) struct super_block *sb = dvp->vnode->vfs_inode.i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) struct afs_vnode *vnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) _enter(",{%llx:%llu.%u},,", vp->fid.vid, vp->fid.vnode, vp->fid.unique);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) inode = iget5_locked(sb, vp->fid.vnode, afs_iget5_test, afs_iget5_set, vp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (!inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) _leave(" = -ENOMEM");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) vnode = AFS_FS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) _debug("GOT INODE %p { vl=%llx vn=%llx, u=%x }",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) inode, vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) /* deal with an existing inode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) if (!(inode->i_state & I_NEW)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) _leave(" = %p", inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) ret = afs_inode_init_from_status(op, vp, vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) goto bad_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) afs_get_inode_cache(vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /* success */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) clear_bit(AFS_VNODE_UNSET, &vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) unlock_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) _leave(" = %p", inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) /* failure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) bad_inode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) iget_failed(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) _leave(" = %d [bad]", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) return ERR_PTR(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) static int afs_iget5_set_root(struct inode *inode, void *opaque)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) struct afs_super_info *as = AFS_FS_S(inode->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) struct afs_vnode *vnode = AFS_FS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) vnode->volume = as->volume;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) vnode->fid.vid = as->volume->vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) vnode->fid.vnode = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) vnode->fid.unique = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) inode->i_ino = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) inode->i_generation = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) * Set up the root inode for a volume. This is always vnode 1, unique 1 within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) * the volume.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) struct inode *afs_root_iget(struct super_block *sb, struct key *key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) struct afs_super_info *as = AFS_FS_S(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) struct afs_operation *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) struct afs_vnode *vnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) struct inode *inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) _enter(",{%llx},,", as->volume->vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) inode = iget5_locked(sb, 1, NULL, afs_iget5_set_root, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) if (!inode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) _leave(" = -ENOMEM");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) _debug("GOT ROOT INODE %p { vl=%llx }", inode, as->volume->vid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) BUG_ON(!(inode->i_state & I_NEW));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) vnode = AFS_FS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) vnode->cb_v_break = as->volume->cb_v_break,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) op = afs_alloc_operation(key, as->volume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (IS_ERR(op)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) ret = PTR_ERR(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) afs_op_set_vnode(op, 0, vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) op->nr_files = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) op->ops = &afs_fetch_status_operation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) ret = afs_do_sync_operation(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) afs_get_inode_cache(vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) clear_bit(AFS_VNODE_UNSET, &vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) unlock_new_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) _leave(" = %p", inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) return inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) iget_failed(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) _leave(" = %d [bad]", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) return ERR_PTR(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * mark the data attached to an inode as obsolete due to a write on the server
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) * - might also want to ditch all the outstanding writes and dirty pages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) static void afs_zap_data(struct afs_vnode *vnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) _enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) #ifdef CONFIG_AFS_FSCACHE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) fscache_invalidate(vnode->cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) /* nuke all the non-dirty pages that aren't locked, mapped or being
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) * written back in a regular file and completely discard the pages in a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) * directory or symlink */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (S_ISREG(vnode->vfs_inode.i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) invalidate_remote_inode(&vnode->vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) invalidate_inode_pages2(vnode->vfs_inode.i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) * Get the server reinit counter for a vnode's current server.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) static bool afs_get_s_break_rcu(struct afs_vnode *vnode, unsigned int *_s_break)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) struct afs_server_list *slist = rcu_dereference(vnode->volume->servers);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) struct afs_server *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) for (i = 0; i < slist->nr_servers; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) server = slist->servers[i].server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) if (server == vnode->cb_server) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) *_s_break = READ_ONCE(server->cb_s_break);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) * Check the validity of a vnode/inode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) bool afs_check_validity(struct afs_vnode *vnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) struct afs_volume *volume = vnode->volume;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) enum afs_cb_break_reason need_clear = afs_cb_break_no_break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) time64_t now = ktime_get_real_seconds();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) bool valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) unsigned int cb_break, cb_s_break, cb_v_break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) int seq = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) read_seqbegin_or_lock(&vnode->cb_lock, &seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) cb_v_break = READ_ONCE(volume->cb_v_break);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) cb_break = vnode->cb_break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) afs_get_s_break_rcu(vnode, &cb_s_break)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) if (vnode->cb_s_break != cb_s_break ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) vnode->cb_v_break != cb_v_break) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) vnode->cb_s_break = cb_s_break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) vnode->cb_v_break = cb_v_break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) need_clear = afs_cb_break_for_vsbreak;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) valid = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) } else if (test_bit(AFS_VNODE_ZAP_DATA, &vnode->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) need_clear = afs_cb_break_for_zap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) valid = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) } else if (vnode->cb_expires_at - 10 <= now) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) need_clear = afs_cb_break_for_lapsed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) valid = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) valid = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) } else if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) valid = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) vnode->cb_v_break = cb_v_break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) valid = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) } while (need_seqretry(&vnode->cb_lock, seq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) done_seqretry(&vnode->cb_lock, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) if (need_clear != afs_cb_break_no_break) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) write_seqlock(&vnode->cb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (cb_break == vnode->cb_break)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) __afs_break_callback(vnode, need_clear);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) trace_afs_cb_miss(&vnode->fid, need_clear);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) write_sequnlock(&vnode->cb_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) valid = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) return valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * validate a vnode/inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) * - there are several things we need to check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) * - parent dir data changes (rm, rmdir, rename, mkdir, create, link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) * symlink)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) * - parent dir metadata changed (security changes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) * - dentry data changed (write, truncate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) * - dentry metadata changed (security changes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) int afs_validate(struct afs_vnode *vnode, struct key *key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) bool valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) _enter("{v={%llx:%llu} fl=%lx},%x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) vnode->fid.vid, vnode->fid.vnode, vnode->flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) key_serial(key));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) valid = afs_check_validity(vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) if (test_bit(AFS_VNODE_DELETED, &vnode->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) clear_nlink(&vnode->vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) if (valid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) goto valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) down_write(&vnode->validate_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) /* if the promise has expired, we need to check the server again to get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * a new promise - note that if the (parent) directory's metadata was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * changed then the security may be different and we may no longer have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) * access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) if (!test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) _debug("not promised");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) ret = afs_fetch_status(vnode, key, false, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) if (ret == -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) set_bit(AFS_VNODE_DELETED, &vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) ret = -ESTALE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) goto error_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) _debug("new promise [fl=%lx]", vnode->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) _debug("file already deleted");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) ret = -ESTALE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) goto error_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) /* if the vnode's data version number changed then its contents are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) * different */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) if (test_and_clear_bit(AFS_VNODE_ZAP_DATA, &vnode->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) afs_zap_data(vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) up_write(&vnode->validate_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) valid:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) _leave(" = 0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) error_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) up_write(&vnode->validate_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) _leave(" = %d", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) * read the attributes of an inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) int afs_getattr(const struct path *path, struct kstat *stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) u32 request_mask, unsigned int query_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) struct inode *inode = d_inode(path->dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) struct afs_vnode *vnode = AFS_FS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) int seq = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) _enter("{ ino=%lu v=%u }", inode->i_ino, inode->i_generation);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) read_seqbegin_or_lock(&vnode->cb_lock, &seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) generic_fillattr(inode, stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) if (test_bit(AFS_VNODE_SILLY_DELETED, &vnode->flags) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) stat->nlink > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) stat->nlink -= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) } while (need_seqretry(&vnode->cb_lock, seq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) done_seqretry(&vnode->cb_lock, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) * discard an AFS inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) int afs_drop_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) _enter("");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) if (test_bit(AFS_VNODE_PSEUDODIR, &AFS_FS_I(inode)->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) return generic_delete_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) return generic_drop_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) * clear an AFS inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) void afs_evict_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) struct afs_vnode *vnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) vnode = AFS_FS_I(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) _enter("{%llx:%llu.%d}",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) vnode->fid.vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) vnode->fid.vnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) vnode->fid.unique);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) _debug("CLEAR INODE %p", inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) ASSERTCMP(inode->i_ino, ==, vnode->fid.vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) truncate_inode_pages_final(&inode->i_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) clear_inode(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) while (!list_empty(&vnode->wb_keys)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) struct afs_wb_key *wbk = list_entry(vnode->wb_keys.next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) struct afs_wb_key, vnode_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) list_del(&wbk->vnode_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) afs_put_wb_key(wbk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) #ifdef CONFIG_AFS_FSCACHE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) struct afs_vnode_cache_aux aux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) aux.data_version = vnode->status.data_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) fscache_relinquish_cookie(vnode->cache, &aux,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) test_bit(AFS_VNODE_DELETED, &vnode->flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) vnode->cache = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) afs_prune_wb_keys(vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) afs_put_permits(rcu_access_pointer(vnode->permit_cache));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) key_put(vnode->silly_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) vnode->silly_key = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) key_put(vnode->lock_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) vnode->lock_key = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) _leave("");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) static void afs_setattr_success(struct afs_operation *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) struct afs_vnode_param *vp = &op->file[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) struct inode *inode = &vp->vnode->vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) loff_t old_i_size = i_size_read(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) op->setattr.old_i_size = old_i_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) afs_vnode_commit_status(op, vp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) /* inode->i_size has now been changed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) if (op->setattr.attr->ia_valid & ATTR_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) loff_t size = op->setattr.attr->ia_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) if (size > old_i_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) pagecache_isize_extended(inode, old_i_size, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) static void afs_setattr_edit_file(struct afs_operation *op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) struct afs_vnode_param *vp = &op->file[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) struct inode *inode = &vp->vnode->vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) if (op->setattr.attr->ia_valid & ATTR_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) loff_t size = op->setattr.attr->ia_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) loff_t i_size = op->setattr.old_i_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) if (size < i_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) truncate_pagecache(inode, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) static const struct afs_operation_ops afs_setattr_operation = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) .issue_afs_rpc = afs_fs_setattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) .issue_yfs_rpc = yfs_fs_setattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) .success = afs_setattr_success,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) .edit_dir = afs_setattr_edit_file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) * set the attributes of an inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) int afs_setattr(struct dentry *dentry, struct iattr *attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) struct afs_operation *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) _enter("{%llx:%llu},{n=%pd},%x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) vnode->fid.vid, vnode->fid.vnode, dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) attr->ia_valid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) if (!(attr->ia_valid & (ATTR_SIZE | ATTR_MODE | ATTR_UID | ATTR_GID |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) ATTR_MTIME | ATTR_MTIME_SET | ATTR_TIMES_SET |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) ATTR_TOUCH))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) _leave(" = 0 [unsupported]");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) if (attr->ia_valid & ATTR_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) if (!S_ISREG(vnode->vfs_inode.i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) return -EISDIR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) ret = inode_newsize_ok(&vnode->vfs_inode, attr->ia_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) if (attr->ia_size == i_size_read(&vnode->vfs_inode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) attr->ia_valid &= ~ATTR_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) /* flush any dirty data outstanding on a regular file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) if (S_ISREG(vnode->vfs_inode.i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) filemap_write_and_wait(vnode->vfs_inode.i_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) /* Prevent any new writebacks from starting whilst we do this. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) down_write(&vnode->validate_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) op = afs_alloc_operation(((attr->ia_valid & ATTR_FILE) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) afs_file_key(attr->ia_file) : NULL),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) vnode->volume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) if (IS_ERR(op)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) ret = PTR_ERR(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) afs_op_set_vnode(op, 0, vnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) op->setattr.attr = attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) if (attr->ia_valid & ATTR_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) op->file[0].dv_delta = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) op->file[0].set_size = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) op->ctime = attr->ia_ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) op->file[0].update_ctime = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) op->file[0].modification = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) op->ops = &afs_setattr_operation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) ret = afs_do_sync_operation(op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) up_write(&vnode->validate_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) _leave(" = %d", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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