1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org>
4 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
7 #include <linux/kernel.h>
9 #include <linux/uaccess.h>
10 #include <linux/backing-dev.h>
11 #include <linux/writeback.h>
12 #include <linux/xattr.h>
13 #include <linux/falloc.h>
14 #include <linux/genhd.h>
15 #include <linux/blkdev.h>
16 #include <linux/fsnotify.h>
17 #include <linux/dcache.h>
18 #include <linux/slab.h>
19 #include <linux/vmalloc.h>
20 #include <linux/sched/xacct.h>
21 #include <linux/crc32c.h>
25 #include "connection.h"
27 #include "vfs_cache.h"
33 #include "smb_common.h"
34 #include "mgmt/share_config.h"
35 #include "mgmt/tree_connect.h"
36 #include "mgmt/user_session.h"
37 #include "mgmt/user_config.h"
39 static char *extract_last_component(char *path)
41 char *p = strrchr(path, '/');
43 if (p && p[1] != '\0') {
48 ksmbd_err("Invalid path %s\n", path);
53 static void ksmbd_vfs_inherit_owner(struct ksmbd_work *work,
54 struct inode *parent_inode,
57 if (!test_share_config_flag(work->tcon->share_conf,
58 KSMBD_SHARE_FLAG_INHERIT_OWNER))
61 i_uid_write(inode, i_uid_read(parent_inode));
64 int ksmbd_vfs_inode_permission(struct dentry *dentry, int acc_mode, bool delete)
69 acc_mode &= O_ACCMODE;
71 if (acc_mode == O_RDONLY)
73 else if (acc_mode == O_WRONLY)
75 else if (acc_mode == O_RDWR)
76 mask = MAY_READ | MAY_WRITE;
78 if (inode_permission(&init_user_ns, d_inode(dentry), mask | MAY_OPEN))
82 struct dentry *child, *parent;
84 parent = dget_parent(dentry);
85 inode_lock_nested(d_inode(parent), I_MUTEX_PARENT);
86 child = lookup_one_len(dentry->d_name.name, parent,
93 if (child != dentry) {
100 if (inode_permission(&init_user_ns, d_inode(parent), MAY_EXEC | MAY_WRITE)) {
105 inode_unlock(d_inode(parent));
111 int ksmbd_vfs_query_maximal_access(struct dentry *dentry, __le32 *daccess)
113 struct dentry *parent, *child;
116 *daccess = cpu_to_le32(FILE_READ_ATTRIBUTES | READ_CONTROL);
118 if (!inode_permission(&init_user_ns, d_inode(dentry), MAY_OPEN | MAY_WRITE))
119 *daccess |= cpu_to_le32(WRITE_DAC | WRITE_OWNER | SYNCHRONIZE |
120 FILE_WRITE_DATA | FILE_APPEND_DATA |
121 FILE_WRITE_EA | FILE_WRITE_ATTRIBUTES |
124 if (!inode_permission(&init_user_ns, d_inode(dentry), MAY_OPEN | MAY_READ))
125 *daccess |= FILE_READ_DATA_LE | FILE_READ_EA_LE;
127 if (!inode_permission(&init_user_ns, d_inode(dentry), MAY_OPEN | MAY_EXEC))
128 *daccess |= FILE_EXECUTE_LE;
130 parent = dget_parent(dentry);
131 inode_lock_nested(d_inode(parent), I_MUTEX_PARENT);
132 child = lookup_one_len(dentry->d_name.name, parent,
135 ret = PTR_ERR(child);
139 if (child != dentry) {
146 if (!inode_permission(&init_user_ns, d_inode(parent), MAY_EXEC | MAY_WRITE))
147 *daccess |= FILE_DELETE_LE;
150 inode_unlock(d_inode(parent));
156 * ksmbd_vfs_create() - vfs helper for smb create file
159 * @mode: file create mode
161 * Return: 0 on success, otherwise error
163 int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode)
166 struct dentry *dentry;
169 dentry = kern_path_create(AT_FDCWD, name, &path, 0);
170 if (IS_ERR(dentry)) {
171 err = PTR_ERR(dentry);
173 ksmbd_err("path create failed for %s, err %d\n",
179 err = vfs_create(&init_user_ns, d_inode(path.dentry), dentry, mode, true);
181 ksmbd_vfs_inherit_owner(work, d_inode(path.dentry),
184 ksmbd_err("File(%s): creation failed (err:%d)\n", name, err);
186 done_path_create(&path, dentry);
191 * ksmbd_vfs_mkdir() - vfs helper for smb create directory
193 * @name: directory name
194 * @mode: directory create mode
196 * Return: 0 on success, otherwise error
198 int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode)
201 struct dentry *dentry;
204 dentry = kern_path_create(AT_FDCWD, name, &path, LOOKUP_DIRECTORY);
205 if (IS_ERR(dentry)) {
206 err = PTR_ERR(dentry);
208 ksmbd_debug(VFS, "path create failed for %s, err %d\n",
214 err = vfs_mkdir(&init_user_ns, d_inode(path.dentry), dentry, mode);
217 } else if (d_unhashed(dentry)) {
220 d = lookup_one_len(dentry->d_name.name, dentry->d_parent,
226 if (unlikely(d_is_negative(d))) {
232 ksmbd_vfs_inherit_owner(work, d_inode(path.dentry), d_inode(d));
236 done_path_create(&path, dentry);
238 ksmbd_err("mkdir(%s): creation failed (err:%d)\n", name, err);
242 static ssize_t ksmbd_vfs_getcasexattr(struct dentry *dentry, char *attr_name,
243 int attr_name_len, char **attr_value)
245 char *name, *xattr_list = NULL;
246 ssize_t value_len = -ENOENT, xattr_list_len;
248 xattr_list_len = ksmbd_vfs_listxattr(dentry, &xattr_list);
249 if (xattr_list_len <= 0)
252 for (name = xattr_list; name - xattr_list < xattr_list_len;
253 name += strlen(name) + 1) {
254 ksmbd_debug(VFS, "%s, len %zd\n", name, strlen(name));
255 if (strncasecmp(attr_name, name, attr_name_len))
258 value_len = ksmbd_vfs_getxattr(dentry,
262 ksmbd_err("failed to get xattr in file\n");
271 static int ksmbd_vfs_stream_read(struct ksmbd_file *fp, char *buf, loff_t *pos,
275 char *stream_buf = NULL;
277 ksmbd_debug(VFS, "read stream data pos : %llu, count : %zd\n",
280 v_len = ksmbd_vfs_getcasexattr(fp->filp->f_path.dentry,
292 if (v_len - *pos < count)
293 count = v_len - *pos;
295 memcpy(buf, &stream_buf[*pos], count);
303 * check_lock_range() - vfs helper for smb byte range file locking
304 * @filp: the file to apply the lock to
305 * @start: lock start byte offset
306 * @end: lock end byte offset
307 * @type: byte range type read/write
309 * Return: 0 on success, otherwise error
311 static int check_lock_range(struct file *filp, loff_t start, loff_t end,
314 struct file_lock *flock;
315 struct file_lock_context *ctx = file_inode(filp)->i_flctx;
318 if (!ctx || list_empty_careful(&ctx->flc_posix))
321 spin_lock(&ctx->flc_lock);
322 list_for_each_entry(flock, &ctx->flc_posix, fl_list) {
323 /* check conflict locks */
324 if (flock->fl_end >= start && end >= flock->fl_start) {
325 if (flock->fl_type == F_RDLCK) {
327 ksmbd_err("not allow write by shared lock\n");
331 } else if (flock->fl_type == F_WRLCK) {
332 /* check owner in lock */
333 if (flock->fl_file != filp) {
335 ksmbd_err("not allow rw access by exclusive lock from other opens\n");
342 spin_unlock(&ctx->flc_lock);
347 * ksmbd_vfs_read() - vfs helper for smb file read
349 * @fid: file id of open file
350 * @count: read byte count
353 * Return: number of read bytes on success, otherwise error
355 int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count,
363 rbuf = work->aux_payload_buf;
365 inode = file_inode(filp);
366 if (S_ISDIR(inode->i_mode))
369 if (unlikely(count == 0))
372 if (work->conn->connection_type) {
373 if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_EXECUTE_LE))) {
374 ksmbd_err("no right to read(%s)\n", FP_FILENAME(fp));
379 if (ksmbd_stream_fd(fp))
380 return ksmbd_vfs_stream_read(fp, rbuf, pos, count);
382 if (!work->tcon->posix_extensions) {
385 ret = check_lock_range(filp, *pos, *pos + count - 1, READ);
387 ksmbd_err("unable to read due to lock\n");
392 nbytes = kernel_read(filp, rbuf, count, pos);
394 ksmbd_err("smb read failed for (%s), err = %zd\n",
395 fp->filename, nbytes);
403 static int ksmbd_vfs_stream_write(struct ksmbd_file *fp, char *buf, loff_t *pos,
406 char *stream_buf = NULL, *wbuf;
410 ksmbd_debug(VFS, "write stream data pos : %llu, count : %zd\n",
414 if (size > XATTR_SIZE_MAX) {
415 size = XATTR_SIZE_MAX;
416 count = (*pos + count) - XATTR_SIZE_MAX;
419 v_len = ksmbd_vfs_getcasexattr(fp->filp->f_path.dentry,
423 if ((int)v_len < 0) {
424 ksmbd_err("not found stream in xattr : %zd\n", v_len);
430 wbuf = kvmalloc(size, GFP_KERNEL | __GFP_ZERO);
437 memcpy(wbuf, stream_buf, v_len);
442 memcpy(&stream_buf[*pos], buf, count);
444 err = ksmbd_vfs_setxattr(fp->filp->f_path.dentry,
452 fp->filp->f_pos = *pos;
460 * ksmbd_vfs_write() - vfs helper for smb file write
462 * @fid: file id of open file
463 * @buf: buf containing data for writing
464 * @count: read byte count
466 * @sync: fsync after write
467 * @written: number of bytes written
469 * Return: 0 on success, otherwise error
471 int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp,
472 char *buf, size_t count, loff_t *pos, bool sync,
475 struct ksmbd_session *sess = work->sess;
477 loff_t offset = *pos;
480 if (sess->conn->connection_type) {
481 if (!(fp->daccess & FILE_WRITE_DATA_LE)) {
482 ksmbd_err("no right to write(%s)\n", FP_FILENAME(fp));
490 if (ksmbd_stream_fd(fp)) {
491 err = ksmbd_vfs_stream_write(fp, buf, pos, count);
497 if (!work->tcon->posix_extensions) {
498 err = check_lock_range(filp, *pos, *pos + count - 1, WRITE);
500 ksmbd_err("unable to write due to lock\n");
506 /* Do we need to break any of a levelII oplock? */
507 smb_break_all_levII_oplock(work, fp, 1);
509 err = kernel_write(filp, buf, count, pos);
511 ksmbd_debug(VFS, "smb write failed, err = %d\n", err);
519 err = vfs_fsync_range(filp, offset, offset + *written, 0);
521 ksmbd_err("fsync failed for filename = %s, err = %d\n",
522 FP_FILENAME(fp), err);
530 * ksmbd_vfs_getattr() - vfs helper for smb getattr
532 * @fid: file id of open file
533 * @attrs: inode attributes
535 * Return: 0 on success, otherwise error
537 int ksmbd_vfs_getattr(struct path *path, struct kstat *stat)
541 err = vfs_getattr(path, stat, STATX_BTIME, AT_STATX_SYNC_AS_STAT);
543 ksmbd_err("getattr failed, err %d\n", err);
548 * ksmbd_vfs_fsync() - vfs helper for smb fsync
550 * @fid: file id of open file
552 * Return: 0 on success, otherwise error
554 int ksmbd_vfs_fsync(struct ksmbd_work *work, u64 fid, u64 p_id)
556 struct ksmbd_file *fp;
559 fp = ksmbd_lookup_fd_slow(work, fid, p_id);
561 ksmbd_err("failed to get filp for fid %llu\n", fid);
564 err = vfs_fsync(fp->filp, 0);
566 ksmbd_err("smb fsync failed, err = %d\n", err);
567 ksmbd_fd_put(work, fp);
572 * ksmbd_vfs_remove_file() - vfs helper for smb rmdir or unlink
573 * @name: absolute directory or file name
575 * Return: 0 on success, otherwise error
577 int ksmbd_vfs_remove_file(struct ksmbd_work *work, char *name)
580 struct dentry *dentry, *parent;
584 if (ksmbd_override_fsids(work))
587 if (test_share_config_flag(work->tcon->share_conf,
588 KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS))
589 flags = LOOKUP_FOLLOW;
591 err = kern_path(name, flags, &path);
593 ksmbd_debug(VFS, "can't get %s, err %d\n", name, err);
594 ksmbd_revert_fsids(work);
598 parent = dget_parent(path.dentry);
599 inode_lock_nested(d_inode(parent), I_MUTEX_PARENT);
600 dentry = lookup_one_len(path.dentry->d_name.name, parent,
601 strlen(path.dentry->d_name.name));
602 if (IS_ERR(dentry)) {
603 err = PTR_ERR(dentry);
604 ksmbd_debug(VFS, "%s: lookup failed, err %d\n",
605 path.dentry->d_name.name, err);
609 if (!d_inode(dentry) || !d_inode(dentry)->i_nlink) {
615 if (S_ISDIR(d_inode(dentry)->i_mode)) {
616 err = vfs_rmdir(&init_user_ns, d_inode(parent), dentry);
617 if (err && err != -ENOTEMPTY)
618 ksmbd_debug(VFS, "%s: rmdir failed, err %d\n", name,
621 err = vfs_unlink(&init_user_ns, d_inode(parent), dentry, NULL);
623 ksmbd_debug(VFS, "%s: unlink failed, err %d\n", name,
629 inode_unlock(d_inode(parent));
632 ksmbd_revert_fsids(work);
637 * ksmbd_vfs_link() - vfs helper for creating smb hardlink
638 * @oldname: source file name
639 * @newname: hardlink name
641 * Return: 0 on success, otherwise error
643 int ksmbd_vfs_link(struct ksmbd_work *work, const char *oldname,
646 struct path oldpath, newpath;
647 struct dentry *dentry;
651 if (ksmbd_override_fsids(work))
654 if (test_share_config_flag(work->tcon->share_conf,
655 KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS))
656 flags = LOOKUP_FOLLOW;
658 err = kern_path(oldname, flags, &oldpath);
660 ksmbd_err("cannot get linux path for %s, err = %d\n",
665 dentry = kern_path_create(AT_FDCWD, newname, &newpath,
666 flags | LOOKUP_REVAL);
667 if (IS_ERR(dentry)) {
668 err = PTR_ERR(dentry);
669 ksmbd_err("path create err for %s, err %d\n", newname, err);
674 if (oldpath.mnt != newpath.mnt) {
675 ksmbd_err("vfs_link failed err %d\n", err);
679 err = vfs_link(oldpath.dentry, &init_user_ns, d_inode(newpath.dentry),
682 ksmbd_debug(VFS, "vfs_link failed err %d\n", err);
685 done_path_create(&newpath, dentry);
689 ksmbd_revert_fsids(work);
693 static int __ksmbd_vfs_rename(struct ksmbd_work *work,
694 struct dentry *src_dent_parent,
695 struct dentry *src_dent,
696 struct dentry *dst_dent_parent,
697 struct dentry *trap_dent,
700 struct dentry *dst_dent;
703 if (!work->tcon->posix_extensions) {
704 spin_lock(&src_dent->d_lock);
705 list_for_each_entry(dst_dent, &src_dent->d_subdirs, d_child) {
706 struct ksmbd_file *child_fp;
708 if (d_really_is_negative(dst_dent))
711 child_fp = ksmbd_lookup_fd_inode(d_inode(dst_dent));
713 spin_unlock(&src_dent->d_lock);
714 ksmbd_debug(VFS, "Forbid rename, sub file/dir is in use\n");
718 spin_unlock(&src_dent->d_lock);
721 if (d_really_is_negative(src_dent_parent))
723 if (d_really_is_negative(dst_dent_parent))
725 if (d_really_is_negative(src_dent))
727 if (src_dent == trap_dent)
730 if (ksmbd_override_fsids(work))
733 dst_dent = lookup_one_len(dst_name, dst_dent_parent, strlen(dst_name));
734 err = PTR_ERR(dst_dent);
735 if (IS_ERR(dst_dent)) {
736 ksmbd_err("lookup failed %s [%d]\n", dst_name, err);
741 if (dst_dent != trap_dent && !d_really_is_positive(dst_dent)) {
742 struct renamedata rd = {
743 .old_mnt_userns = &init_user_ns,
744 .old_dir = d_inode(src_dent_parent),
745 .old_dentry = src_dent,
746 .new_mnt_userns = &init_user_ns,
747 .new_dir = d_inode(dst_dent_parent),
748 .new_dentry = dst_dent,
750 err = vfs_rename(&rd);
753 ksmbd_err("vfs_rename failed err %d\n", err);
757 ksmbd_revert_fsids(work);
761 int ksmbd_vfs_fp_rename(struct ksmbd_work *work, struct ksmbd_file *fp,
764 struct path dst_path;
765 struct dentry *src_dent_parent, *dst_dent_parent;
766 struct dentry *src_dent, *trap_dent, *src_child;
771 dst_name = extract_last_component(newname);
775 src_dent_parent = dget_parent(fp->filp->f_path.dentry);
776 src_dent = fp->filp->f_path.dentry;
778 flags = LOOKUP_DIRECTORY;
779 if (test_share_config_flag(work->tcon->share_conf,
780 KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS))
781 flags |= LOOKUP_FOLLOW;
783 err = kern_path(newname, flags, &dst_path);
785 ksmbd_debug(VFS, "Cannot get path for %s [%d]\n", newname, err);
788 dst_dent_parent = dst_path.dentry;
790 trap_dent = lock_rename(src_dent_parent, dst_dent_parent);
792 dget(dst_dent_parent);
793 src_child = lookup_one_len(src_dent->d_name.name, src_dent_parent,
794 src_dent->d_name.len);
795 if (IS_ERR(src_child)) {
796 err = PTR_ERR(src_child);
800 if (src_child != src_dent) {
807 err = __ksmbd_vfs_rename(work,
815 dput(dst_dent_parent);
816 unlock_rename(src_dent_parent, dst_dent_parent);
819 dput(src_dent_parent);
824 * ksmbd_vfs_truncate() - vfs helper for smb file truncate
826 * @name: old filename
827 * @fid: file id of old file
828 * @size: truncate to given size
830 * Return: 0 on success, otherwise error
832 int ksmbd_vfs_truncate(struct ksmbd_work *work, const char *name,
833 struct ksmbd_file *fp, loff_t size)
839 err = kern_path(name, 0, &path);
841 ksmbd_err("cannot get linux path for %s, err %d\n",
845 err = vfs_truncate(&path, size);
847 ksmbd_err("truncate failed for %s err %d\n",
855 /* Do we need to break any of a levelII oplock? */
856 smb_break_all_levII_oplock(work, fp, 1);
858 if (!work->tcon->posix_extensions) {
859 struct inode *inode = file_inode(filp);
861 if (size < inode->i_size) {
862 err = check_lock_range(filp, size,
863 inode->i_size - 1, WRITE);
865 err = check_lock_range(filp, inode->i_size,
870 ksmbd_err("failed due to lock\n");
875 err = vfs_truncate(&filp->f_path, size);
877 ksmbd_err("truncate failed for filename : %s err %d\n",
885 * ksmbd_vfs_listxattr() - vfs helper for smb list extended attributes
886 * @dentry: dentry of file for listing xattrs
887 * @list: destination buffer
888 * @size: destination buffer length
890 * Return: xattr list length on success, otherwise error
892 ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list)
897 size = vfs_listxattr(dentry, NULL, 0);
901 vlist = kvmalloc(size, GFP_KERNEL | __GFP_ZERO);
906 size = vfs_listxattr(dentry, vlist, size);
908 ksmbd_debug(VFS, "listxattr failed\n");
916 static ssize_t ksmbd_vfs_xattr_len(struct dentry *dentry, char *xattr_name)
918 return vfs_getxattr(&init_user_ns, dentry, xattr_name, NULL, 0);
922 * ksmbd_vfs_getxattr() - vfs helper for smb get extended attributes value
923 * @dentry: dentry of file for getting xattrs
924 * @xattr_name: name of xattr name to query
925 * @xattr_buf: destination buffer xattr value
927 * Return: read xattr value length on success, otherwise error
929 ssize_t ksmbd_vfs_getxattr(struct dentry *dentry, char *xattr_name,
936 xattr_len = ksmbd_vfs_xattr_len(dentry, xattr_name);
940 buf = kmalloc(xattr_len + 1, GFP_KERNEL);
944 xattr_len = vfs_getxattr(&init_user_ns, dentry, xattr_name,
945 (void *)buf, xattr_len);
954 * ksmbd_vfs_setxattr() - vfs helper for smb set extended attributes value
955 * @dentry: dentry to set XATTR at
956 * @name: xattr name for setxattr
957 * @value: xattr value to set
958 * @size: size of xattr value
959 * @flags: destination buffer length
961 * Return: 0 on success, otherwise error
963 int ksmbd_vfs_setxattr(struct dentry *dentry, const char *attr_name,
964 const void *attr_value, size_t attr_size, int flags)
968 err = vfs_setxattr(&init_user_ns, dentry,
974 ksmbd_debug(VFS, "setxattr failed, err %d\n", err);
979 * ksmbd_vfs_set_fadvise() - convert smb IO caching options to linux options
980 * @filp: file pointer for IO
981 * @options: smb IO options
983 void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option)
985 struct address_space *mapping;
987 mapping = filp->f_mapping;
989 if (!option || !mapping)
992 if (option & FILE_WRITE_THROUGH_LE) {
993 filp->f_flags |= O_SYNC;
994 } else if (option & FILE_SEQUENTIAL_ONLY_LE) {
995 filp->f_ra.ra_pages = inode_to_bdi(mapping->host)->ra_pages * 2;
996 spin_lock(&filp->f_lock);
997 filp->f_mode &= ~FMODE_RANDOM;
998 spin_unlock(&filp->f_lock);
999 } else if (option & FILE_RANDOM_ACCESS_LE) {
1000 spin_lock(&filp->f_lock);
1001 filp->f_mode |= FMODE_RANDOM;
1002 spin_unlock(&filp->f_lock);
1007 * ksmbd_vfs_lock() - vfs helper for smb file locking
1008 * @filp: the file to apply the lock to
1009 * @cmd: type of locking operation (F_SETLK, F_GETLK, etc.)
1010 * @flock: The lock to be applied
1012 * Return: 0 on success, otherwise error
1014 int ksmbd_vfs_lock(struct file *filp, int cmd, struct file_lock *flock)
1016 ksmbd_debug(VFS, "calling vfs_lock_file\n");
1017 return vfs_lock_file(filp, cmd, flock, NULL);
1020 int ksmbd_vfs_readdir(struct file *file, struct ksmbd_readdir_data *rdata)
1022 return iterate_dir(file, &rdata->ctx);
1025 int ksmbd_vfs_alloc_size(struct ksmbd_work *work, struct ksmbd_file *fp,
1028 smb_break_all_levII_oplock(work, fp, 1);
1029 return vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0, len);
1032 int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp,
1033 loff_t off, loff_t len)
1035 smb_break_all_levII_oplock(work, fp, 1);
1036 if (fp->f_ci->m_fattr & ATTR_SPARSE_FILE_LE)
1037 return vfs_fallocate(fp->filp,
1038 FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
1041 return vfs_fallocate(fp->filp, FALLOC_FL_ZERO_RANGE, off, len);
1044 int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length,
1045 struct file_allocated_range_buffer *ranges,
1046 int in_count, int *out_count)
1048 struct file *f = fp->filp;
1049 struct inode *inode = FP_INODE(fp);
1050 loff_t maxbytes = (u64)inode->i_sb->s_maxbytes, end;
1051 loff_t extent_start, extent_end;
1054 if (start > maxbytes)
1061 * Shrink request scope to what the fs can actually handle.
1063 if (length > maxbytes || (maxbytes - length) < start)
1064 length = maxbytes - start;
1066 if (start + length > inode->i_size)
1067 length = inode->i_size - start;
1070 end = start + length;
1071 while (start < end && *out_count < in_count) {
1072 extent_start = f->f_op->llseek(f, start, SEEK_DATA);
1073 if (extent_start < 0) {
1074 if (extent_start != -ENXIO)
1075 ret = (int)extent_start;
1079 if (extent_start >= end)
1082 extent_end = f->f_op->llseek(f, extent_start, SEEK_HOLE);
1083 if (extent_end < 0) {
1084 if (extent_end != -ENXIO)
1085 ret = (int)extent_end;
1087 } else if (extent_start >= extent_end) {
1091 ranges[*out_count].file_offset = cpu_to_le64(extent_start);
1092 ranges[(*out_count)++].length =
1093 cpu_to_le64(min(extent_end, end) - extent_start);
1101 int ksmbd_vfs_remove_xattr(struct dentry *dentry, char *attr_name)
1103 return vfs_removexattr(&init_user_ns, dentry, attr_name);
1106 int ksmbd_vfs_unlink(struct dentry *dir, struct dentry *dentry)
1108 struct dentry *child;
1111 inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
1113 child = lookup_one_len(dentry->d_name.name, dir, dentry->d_name.len);
1114 if (IS_ERR(child)) {
1115 err = PTR_ERR(child);
1119 if (child != dentry) {
1126 if (S_ISDIR(d_inode(dentry)->i_mode))
1127 err = vfs_rmdir(&init_user_ns, d_inode(dir), dentry);
1129 err = vfs_unlink(&init_user_ns, d_inode(dir), dentry, NULL);
1133 inode_unlock(d_inode(dir));
1135 ksmbd_debug(VFS, "failed to delete, err %d\n", err);
1141 * ksmbd_vfs_get_logical_sector_size() - get logical sector size from inode
1144 * Return: logical sector size
1146 unsigned short ksmbd_vfs_logical_sector_size(struct inode *inode)
1148 struct request_queue *q;
1149 unsigned short ret_val = 512;
1151 if (!inode->i_sb->s_bdev)
1154 q = inode->i_sb->s_bdev->bd_disk->queue;
1156 if (q && q->limits.logical_block_size)
1157 ret_val = q->limits.logical_block_size;
1163 * ksmbd_vfs_get_smb2_sector_size() - get fs sector sizes
1165 * @fs_ss: fs sector size struct
1167 void ksmbd_vfs_smb2_sector_size(struct inode *inode,
1168 struct ksmbd_fs_sector_size *fs_ss)
1170 struct request_queue *q;
1172 fs_ss->logical_sector_size = 512;
1173 fs_ss->physical_sector_size = 512;
1174 fs_ss->optimal_io_size = 512;
1176 if (!inode->i_sb->s_bdev)
1179 q = inode->i_sb->s_bdev->bd_disk->queue;
1182 if (q->limits.logical_block_size)
1183 fs_ss->logical_sector_size =
1184 q->limits.logical_block_size;
1185 if (q->limits.physical_block_size)
1186 fs_ss->physical_sector_size =
1187 q->limits.physical_block_size;
1188 if (q->limits.io_opt)
1189 fs_ss->optimal_io_size = q->limits.io_opt;
1193 static int __dir_empty(struct dir_context *ctx, const char *name, int namlen,
1194 loff_t offset, u64 ino, unsigned int d_type)
1196 struct ksmbd_readdir_data *buf;
1198 buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
1199 buf->dirent_count++;
1201 if (buf->dirent_count > 2)
1207 * ksmbd_vfs_empty_dir() - check for empty directory
1208 * @fp: ksmbd file pointer
1210 * Return: true if directory empty, otherwise false
1212 int ksmbd_vfs_empty_dir(struct ksmbd_file *fp)
1215 struct ksmbd_readdir_data readdir_data;
1217 memset(&readdir_data, 0, sizeof(struct ksmbd_readdir_data));
1219 set_ctx_actor(&readdir_data.ctx, __dir_empty);
1220 readdir_data.dirent_count = 0;
1222 err = ksmbd_vfs_readdir(fp->filp, &readdir_data);
1223 if (readdir_data.dirent_count > 2)
1230 static int __caseless_lookup(struct dir_context *ctx, const char *name,
1231 int namlen, loff_t offset, u64 ino,
1232 unsigned int d_type)
1234 struct ksmbd_readdir_data *buf;
1236 buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
1238 if (buf->used != namlen)
1240 if (!strncasecmp((char *)buf->private, name, namlen)) {
1241 memcpy((char *)buf->private, name, namlen);
1242 buf->dirent_count = 1;
1249 * ksmbd_vfs_lookup_in_dir() - lookup a file in a directory
1251 * @name: filename to lookup
1252 * @namelen: filename length
1254 * Return: 0 on success, otherwise error
1256 static int ksmbd_vfs_lookup_in_dir(struct path *dir, char *name, size_t namelen)
1260 int flags = O_RDONLY | O_LARGEFILE;
1261 struct ksmbd_readdir_data readdir_data = {
1262 .ctx.actor = __caseless_lookup,
1268 dfilp = dentry_open(dir, flags, current_cred());
1270 return PTR_ERR(dfilp);
1272 ret = ksmbd_vfs_readdir(dfilp, &readdir_data);
1273 if (readdir_data.dirent_count > 0)
1280 * ksmbd_vfs_kern_path() - lookup a file and get path info
1281 * @name: name of file for lookup
1282 * @flags: lookup flags
1283 * @path: if lookup succeed, return path info
1284 * @caseless: caseless filename lookup
1286 * Return: 0 on success, otherwise error
1288 int ksmbd_vfs_kern_path(char *name, unsigned int flags, struct path *path,
1296 err = kern_path(name, flags, path);
1303 size_t path_len, remain_len;
1305 filepath = kstrdup(name, GFP_KERNEL);
1309 path_len = strlen(filepath);
1310 remain_len = path_len - 1;
1312 err = kern_path("/", flags, &parent);
1316 while (d_can_lookup(parent.dentry)) {
1317 char *filename = filepath + path_len - remain_len;
1318 char *next = strchrnul(filename, '/');
1319 size_t filename_len = next - filename;
1320 bool is_last = !next[0];
1322 if (filename_len == 0)
1325 err = ksmbd_vfs_lookup_in_dir(&parent, filename,
1335 err = kern_path(filepath, flags, &parent);
1340 path->mnt = parent.mnt;
1341 path->dentry = parent.dentry;
1346 remain_len -= filename_len + 1;
1357 int ksmbd_vfs_remove_acl_xattrs(struct dentry *dentry)
1359 char *name, *xattr_list = NULL;
1360 ssize_t xattr_list_len;
1363 xattr_list_len = ksmbd_vfs_listxattr(dentry, &xattr_list);
1364 if (xattr_list_len < 0) {
1366 } else if (!xattr_list_len) {
1367 ksmbd_debug(SMB, "empty xattr in the file\n");
1371 for (name = xattr_list; name - xattr_list < xattr_list_len;
1372 name += strlen(name) + 1) {
1373 ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name));
1375 if (!strncmp(name, XATTR_NAME_POSIX_ACL_ACCESS,
1376 sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1) ||
1377 !strncmp(name, XATTR_NAME_POSIX_ACL_DEFAULT,
1378 sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1)) {
1379 err = ksmbd_vfs_remove_xattr(dentry, name);
1382 "remove acl xattr failed : %s\n", name);
1390 int ksmbd_vfs_remove_sd_xattrs(struct dentry *dentry)
1392 char *name, *xattr_list = NULL;
1393 ssize_t xattr_list_len;
1396 xattr_list_len = ksmbd_vfs_listxattr(dentry, &xattr_list);
1397 if (xattr_list_len < 0) {
1399 } else if (!xattr_list_len) {
1400 ksmbd_debug(SMB, "empty xattr in the file\n");
1404 for (name = xattr_list; name - xattr_list < xattr_list_len;
1405 name += strlen(name) + 1) {
1406 ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name));
1408 if (!strncmp(name, XATTR_NAME_SD, XATTR_NAME_SD_LEN)) {
1409 err = ksmbd_vfs_remove_xattr(dentry, name);
1411 ksmbd_debug(SMB, "remove xattr failed : %s\n", name);
1419 static struct xattr_smb_acl *ksmbd_vfs_make_xattr_posix_acl(struct inode *inode,
1422 struct xattr_smb_acl *smb_acl = NULL;
1423 struct posix_acl *posix_acls;
1424 struct posix_acl_entry *pa_entry;
1425 struct xattr_acl_entry *xa_entry;
1428 posix_acls = ksmbd_vfs_get_acl(inode, acl_type);
1432 smb_acl = kzalloc(sizeof(struct xattr_smb_acl) +
1433 sizeof(struct xattr_acl_entry) * posix_acls->a_count,
1438 smb_acl->count = posix_acls->a_count;
1439 pa_entry = posix_acls->a_entries;
1440 xa_entry = smb_acl->entries;
1441 for (i = 0; i < posix_acls->a_count; i++, pa_entry++, xa_entry++) {
1442 switch (pa_entry->e_tag) {
1444 xa_entry->type = SMB_ACL_USER;
1445 xa_entry->uid = from_kuid(&init_user_ns, pa_entry->e_uid);
1448 xa_entry->type = SMB_ACL_USER_OBJ;
1451 xa_entry->type = SMB_ACL_GROUP;
1452 xa_entry->gid = from_kgid(&init_user_ns, pa_entry->e_gid);
1455 xa_entry->type = SMB_ACL_GROUP_OBJ;
1458 xa_entry->type = SMB_ACL_OTHER;
1461 xa_entry->type = SMB_ACL_MASK;
1464 ksmbd_err("unknown type : 0x%x\n", pa_entry->e_tag);
1468 if (pa_entry->e_perm & ACL_READ)
1469 xa_entry->perm |= SMB_ACL_READ;
1470 if (pa_entry->e_perm & ACL_WRITE)
1471 xa_entry->perm |= SMB_ACL_WRITE;
1472 if (pa_entry->e_perm & ACL_EXECUTE)
1473 xa_entry->perm |= SMB_ACL_EXECUTE;
1476 posix_acl_release(posix_acls);
1480 int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn, struct dentry *dentry,
1481 struct smb_ntsd *pntsd, int len)
1484 struct ndr sd_ndr = {0}, acl_ndr = {0};
1485 struct xattr_ntacl acl = {0};
1486 struct xattr_smb_acl *smb_acl, *def_smb_acl = NULL;
1487 struct inode *inode = d_inode(dentry);
1490 acl.hash_type = XATTR_SD_HASH_TYPE_SHA256;
1491 acl.current_time = ksmbd_UnixTimeToNT(current_time(inode));
1493 memcpy(acl.desc, "posix_acl", 9);
1497 cpu_to_le32(le32_to_cpu(pntsd->osidoffset) + NDR_NTSD_OFFSETOF);
1499 cpu_to_le32(le32_to_cpu(pntsd->gsidoffset) + NDR_NTSD_OFFSETOF);
1501 cpu_to_le32(le32_to_cpu(pntsd->dacloffset) + NDR_NTSD_OFFSETOF);
1503 acl.sd_buf = (char *)pntsd;
1506 rc = ksmbd_gen_sd_hash(conn, acl.sd_buf, acl.sd_size, acl.hash);
1508 ksmbd_err("failed to generate hash for ndr acl\n");
1512 smb_acl = ksmbd_vfs_make_xattr_posix_acl(inode, ACL_TYPE_ACCESS);
1513 if (S_ISDIR(inode->i_mode))
1514 def_smb_acl = ksmbd_vfs_make_xattr_posix_acl(inode,
1517 rc = ndr_encode_posix_acl(&acl_ndr, inode, smb_acl, def_smb_acl);
1519 ksmbd_err("failed to encode ndr to posix acl\n");
1523 rc = ksmbd_gen_sd_hash(conn, acl_ndr.data, acl_ndr.offset,
1524 acl.posix_acl_hash);
1526 ksmbd_err("failed to generate hash for ndr acl\n");
1530 rc = ndr_encode_v4_ntacl(&sd_ndr, &acl);
1532 ksmbd_err("failed to encode ndr to posix acl\n");
1536 rc = ksmbd_vfs_setxattr(dentry, XATTR_NAME_SD, sd_ndr.data,
1539 ksmbd_err("Failed to store XATTR ntacl :%d\n", rc);
1543 kfree(acl_ndr.data);
1549 int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn, struct dentry *dentry,
1550 struct smb_ntsd **pntsd)
1555 rc = ksmbd_vfs_getxattr(dentry, XATTR_NAME_SD, &n.data);
1557 struct inode *inode = d_inode(dentry);
1558 struct ndr acl_ndr = {0};
1559 struct xattr_ntacl acl;
1560 struct xattr_smb_acl *smb_acl = NULL, *def_smb_acl = NULL;
1561 __u8 cmp_hash[XATTR_SD_HASH_SIZE] = {0};
1564 rc = ndr_decode_v4_ntacl(&n, &acl);
1568 smb_acl = ksmbd_vfs_make_xattr_posix_acl(inode,
1570 if (S_ISDIR(inode->i_mode))
1571 def_smb_acl = ksmbd_vfs_make_xattr_posix_acl(inode,
1574 rc = ndr_encode_posix_acl(&acl_ndr, inode, smb_acl, def_smb_acl);
1576 ksmbd_err("failed to encode ndr to posix acl\n");
1580 rc = ksmbd_gen_sd_hash(conn, acl_ndr.data, acl_ndr.offset,
1583 ksmbd_err("failed to generate hash for ndr acl\n");
1587 if (memcmp(cmp_hash, acl.posix_acl_hash, XATTR_SD_HASH_SIZE)) {
1588 ksmbd_err("hash value diff\n");
1593 *pntsd = acl.sd_buf;
1594 (*pntsd)->osidoffset =
1595 cpu_to_le32(le32_to_cpu((*pntsd)->osidoffset) - NDR_NTSD_OFFSETOF);
1596 (*pntsd)->gsidoffset =
1597 cpu_to_le32(le32_to_cpu((*pntsd)->gsidoffset) - NDR_NTSD_OFFSETOF);
1598 (*pntsd)->dacloffset =
1599 cpu_to_le32(le32_to_cpu((*pntsd)->dacloffset) - NDR_NTSD_OFFSETOF);
1604 kfree(acl_ndr.data);
1612 int ksmbd_vfs_set_dos_attrib_xattr(struct dentry *dentry,
1613 struct xattr_dos_attrib *da)
1618 err = ndr_encode_dos_attr(&n, da);
1622 err = ksmbd_vfs_setxattr(dentry, XATTR_NAME_DOS_ATTRIBUTE,
1623 (void *)n.data, n.offset, 0);
1625 ksmbd_debug(SMB, "failed to store dos attribute in xattr\n");
1631 int ksmbd_vfs_get_dos_attrib_xattr(struct dentry *dentry,
1632 struct xattr_dos_attrib *da)
1637 err = ksmbd_vfs_getxattr(dentry, XATTR_NAME_DOS_ATTRIBUTE,
1641 if (ndr_decode_dos_attr(&n, da))
1645 ksmbd_debug(SMB, "failed to load dos attribute in xattr\n");
1651 struct posix_acl *ksmbd_vfs_posix_acl_alloc(int count, gfp_t flags)
1653 #if IS_ENABLED(CONFIG_FS_POSIX_ACL)
1654 return posix_acl_alloc(count, flags);
1660 struct posix_acl *ksmbd_vfs_get_acl(struct inode *inode, int type)
1662 #if IS_ENABLED(CONFIG_FS_POSIX_ACL)
1663 return get_acl(inode, type);
1669 int ksmbd_vfs_set_posix_acl(struct inode *inode, int type,
1670 struct posix_acl *acl)
1672 #if IS_ENABLED(CONFIG_FS_POSIX_ACL)
1673 return set_posix_acl(&init_user_ns, inode, type, acl);
1680 * ksmbd_vfs_init_kstat() - convert unix stat information to smb stat format
1681 * @p: destination buffer
1682 * @ksmbd_kstat: ksmbd kstat wrapper
1684 void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat)
1686 struct file_directory_info *info = (struct file_directory_info *)(*p);
1687 struct kstat *kstat = ksmbd_kstat->kstat;
1690 info->FileIndex = 0;
1691 info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time);
1692 time = ksmbd_UnixTimeToNT(kstat->atime);
1693 info->LastAccessTime = cpu_to_le64(time);
1694 time = ksmbd_UnixTimeToNT(kstat->mtime);
1695 info->LastWriteTime = cpu_to_le64(time);
1696 time = ksmbd_UnixTimeToNT(kstat->ctime);
1697 info->ChangeTime = cpu_to_le64(time);
1699 if (ksmbd_kstat->file_attributes & ATTR_DIRECTORY_LE) {
1700 info->EndOfFile = 0;
1701 info->AllocationSize = 0;
1703 info->EndOfFile = cpu_to_le64(kstat->size);
1704 info->AllocationSize = cpu_to_le64(kstat->blocks << 9);
1706 info->ExtFileAttributes = ksmbd_kstat->file_attributes;
1711 int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, struct dentry *dentry,
1712 struct ksmbd_kstat *ksmbd_kstat)
1717 generic_fillattr(&init_user_ns, d_inode(dentry), ksmbd_kstat->kstat);
1719 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime);
1720 ksmbd_kstat->create_time = time;
1723 * set default value for the case that store dos attributes is not yes
1724 * or that acl is disable in server's filesystem and the config is yes.
1726 if (S_ISDIR(ksmbd_kstat->kstat->mode))
1727 ksmbd_kstat->file_attributes = ATTR_DIRECTORY_LE;
1729 ksmbd_kstat->file_attributes = ATTR_ARCHIVE_LE;
1731 if (test_share_config_flag(work->tcon->share_conf,
1732 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) {
1733 struct xattr_dos_attrib da;
1735 rc = ksmbd_vfs_get_dos_attrib_xattr(dentry, &da);
1737 ksmbd_kstat->file_attributes = cpu_to_le32(da.attr);
1738 ksmbd_kstat->create_time = da.create_time;
1740 ksmbd_debug(VFS, "fail to load dos attribute.\n");
1747 ssize_t ksmbd_vfs_casexattr_len(struct dentry *dentry, char *attr_name,
1750 char *name, *xattr_list = NULL;
1751 ssize_t value_len = -ENOENT, xattr_list_len;
1753 xattr_list_len = ksmbd_vfs_listxattr(dentry, &xattr_list);
1754 if (xattr_list_len <= 0)
1757 for (name = xattr_list; name - xattr_list < xattr_list_len;
1758 name += strlen(name) + 1) {
1759 ksmbd_debug(VFS, "%s, len %zd\n", name, strlen(name));
1760 if (strncasecmp(attr_name, name, attr_name_len))
1763 value_len = ksmbd_vfs_xattr_len(dentry, name);
1772 int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name,
1773 size_t *xattr_stream_name_size, int s_type)
1775 int stream_name_size;
1776 char *xattr_stream_name_buf;
1780 if (s_type == DIR_STREAM)
1781 type = ":$INDEX_ALLOCATION";
1785 type_len = strlen(type);
1786 stream_name_size = strlen(stream_name);
1787 *xattr_stream_name_size = stream_name_size + XATTR_NAME_STREAM_LEN + 1;
1788 xattr_stream_name_buf = kmalloc(*xattr_stream_name_size + type_len,
1790 if (!xattr_stream_name_buf)
1793 memcpy(xattr_stream_name_buf, XATTR_NAME_STREAM, XATTR_NAME_STREAM_LEN);
1795 if (stream_name_size) {
1796 memcpy(&xattr_stream_name_buf[XATTR_NAME_STREAM_LEN],
1797 stream_name, stream_name_size);
1799 memcpy(&xattr_stream_name_buf[*xattr_stream_name_size - 1], type, type_len);
1800 *xattr_stream_name_size += type_len;
1802 xattr_stream_name_buf[*xattr_stream_name_size - 1] = '\0';
1803 *xattr_stream_name = xattr_stream_name_buf;
1808 int ksmbd_vfs_copy_file_range(struct file *file_in, loff_t pos_in,
1809 struct file *file_out, loff_t pos_out, size_t len)
1811 struct inode *inode_in = file_inode(file_in);
1812 struct inode *inode_out = file_inode(file_out);
1815 ret = vfs_copy_file_range(file_in, pos_in, file_out, pos_out, len, 0);
1816 /* do splice for the copy between different file systems */
1820 if (S_ISDIR(inode_in->i_mode) || S_ISDIR(inode_out->i_mode))
1822 if (!S_ISREG(inode_in->i_mode) || !S_ISREG(inode_out->i_mode))
1825 if (!(file_in->f_mode & FMODE_READ) ||
1826 !(file_out->f_mode & FMODE_WRITE))
1832 file_start_write(file_out);
1835 * skip the verification of the range of data. it will be done
1836 * in do_splice_direct
1838 ret = do_splice_direct(file_in, &pos_in, file_out, &pos_out,
1839 len > MAX_RW_COUNT ? MAX_RW_COUNT : len, 0);
1841 fsnotify_access(file_in);
1842 add_rchar(current, ret);
1843 fsnotify_modify(file_out);
1844 add_wchar(current, ret);
1850 file_end_write(file_out);
1854 int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work,
1855 struct ksmbd_file *src_fp,
1856 struct ksmbd_file *dst_fp,
1857 struct srv_copychunk *chunks,
1858 unsigned int chunk_count,
1859 unsigned int *chunk_count_written,
1860 unsigned int *chunk_size_written,
1861 loff_t *total_size_written)
1864 loff_t src_off, dst_off, src_file_size;
1868 *chunk_count_written = 0;
1869 *chunk_size_written = 0;
1870 *total_size_written = 0;
1872 if (!(src_fp->daccess & (FILE_READ_DATA_LE | FILE_EXECUTE_LE))) {
1873 ksmbd_err("no right to read(%s)\n", FP_FILENAME(src_fp));
1876 if (!(dst_fp->daccess & (FILE_WRITE_DATA_LE | FILE_APPEND_DATA_LE))) {
1877 ksmbd_err("no right to write(%s)\n", FP_FILENAME(dst_fp));
1881 if (ksmbd_stream_fd(src_fp) || ksmbd_stream_fd(dst_fp))
1884 smb_break_all_levII_oplock(work, dst_fp, 1);
1886 if (!work->tcon->posix_extensions) {
1887 for (i = 0; i < chunk_count; i++) {
1888 src_off = le64_to_cpu(chunks[i].SourceOffset);
1889 dst_off = le64_to_cpu(chunks[i].TargetOffset);
1890 len = le32_to_cpu(chunks[i].Length);
1892 if (check_lock_range(src_fp->filp, src_off,
1893 src_off + len - 1, READ))
1895 if (check_lock_range(dst_fp->filp, dst_off,
1896 dst_off + len - 1, WRITE))
1901 src_file_size = i_size_read(file_inode(src_fp->filp));
1903 for (i = 0; i < chunk_count; i++) {
1904 src_off = le64_to_cpu(chunks[i].SourceOffset);
1905 dst_off = le64_to_cpu(chunks[i].TargetOffset);
1906 len = le32_to_cpu(chunks[i].Length);
1908 if (src_off + len > src_file_size)
1911 ret = ksmbd_vfs_copy_file_range(src_fp->filp, src_off,
1912 dst_fp->filp, dst_off, len);
1916 *chunk_count_written += 1;
1917 *total_size_written += ret;
1922 int ksmbd_vfs_posix_lock_wait(struct file_lock *flock)
1924 return wait_event_interruptible(flock->fl_wait, !flock->fl_blocker);
1927 int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout)
1929 return wait_event_interruptible_timeout(flock->fl_wait,
1934 void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock)
1936 locks_delete_block(flock);
1939 int ksmbd_vfs_set_init_posix_acl(struct inode *inode)
1941 struct posix_acl_state acl_state;
1942 struct posix_acl *acls;
1945 ksmbd_debug(SMB, "Set posix acls\n");
1946 rc = init_acl_state(&acl_state, 1);
1950 /* Set default owner group */
1951 acl_state.owner.allow = (inode->i_mode & 0700) >> 6;
1952 acl_state.group.allow = (inode->i_mode & 0070) >> 3;
1953 acl_state.other.allow = inode->i_mode & 0007;
1954 acl_state.users->aces[acl_state.users->n].uid = inode->i_uid;
1955 acl_state.users->aces[acl_state.users->n++].perms.allow =
1956 acl_state.owner.allow;
1957 acl_state.groups->aces[acl_state.groups->n].gid = inode->i_gid;
1958 acl_state.groups->aces[acl_state.groups->n++].perms.allow =
1959 acl_state.group.allow;
1960 acl_state.mask.allow = 0x07;
1962 acls = ksmbd_vfs_posix_acl_alloc(6, GFP_KERNEL);
1964 free_acl_state(&acl_state);
1967 posix_state_to_acl(&acl_state, acls->a_entries);
1968 rc = ksmbd_vfs_set_posix_acl(inode, ACL_TYPE_ACCESS, acls);
1970 ksmbd_debug(SMB, "Set posix acl(ACL_TYPE_ACCESS) failed, rc : %d\n",
1972 else if (S_ISDIR(inode->i_mode)) {
1973 posix_state_to_acl(&acl_state, acls->a_entries);
1974 rc = ksmbd_vfs_set_posix_acl(inode, ACL_TYPE_DEFAULT, acls);
1976 ksmbd_debug(SMB, "Set posix acl(ACL_TYPE_DEFAULT) failed, rc : %d\n",
1979 free_acl_state(&acl_state);
1980 posix_acl_release(acls);
1984 int ksmbd_vfs_inherit_posix_acl(struct inode *inode, struct inode *parent_inode)
1986 struct posix_acl *acls;
1987 struct posix_acl_entry *pace;
1990 acls = ksmbd_vfs_get_acl(parent_inode, ACL_TYPE_DEFAULT);
1993 pace = acls->a_entries;
1995 for (i = 0; i < acls->a_count; i++, pace++) {
1996 if (pace->e_tag == ACL_MASK) {
1997 pace->e_perm = 0x07;
2002 rc = ksmbd_vfs_set_posix_acl(inode, ACL_TYPE_ACCESS, acls);
2004 ksmbd_debug(SMB, "Set posix acl(ACL_TYPE_ACCESS) failed, rc : %d\n",
2006 if (S_ISDIR(inode->i_mode)) {
2007 rc = ksmbd_vfs_set_posix_acl(inode, ACL_TYPE_DEFAULT, acls);
2009 ksmbd_debug(SMB, "Set posix acl(ACL_TYPE_DEFAULT) failed, rc : %d\n",
2012 posix_acl_release(acls);