1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_log_format.h"
11 #include "xfs_trans_resv.h"
12 #include "xfs_mount.h"
13 #include "xfs_inode.h"
14 #include "xfs_rtalloc.h"
15 #include "xfs_iwalk.h"
16 #include "xfs_itable.h"
17 #include "xfs_error.h"
18 #include "xfs_da_format.h"
19 #include "xfs_da_btree.h"
22 #include "xfs_bmap_util.h"
23 #include "xfs_fsops.h"
24 #include "xfs_discard.h"
25 #include "xfs_quota.h"
26 #include "xfs_export.h"
27 #include "xfs_trace.h"
28 #include "xfs_icache.h"
29 #include "xfs_trans.h"
31 #include "xfs_btree.h"
32 #include <linux/fsmap.h>
33 #include "xfs_fsmap.h"
34 #include "scrub/xfs_scrub.h"
37 #include "xfs_health.h"
38 #include "xfs_reflink.h"
39 #include "xfs_ioctl.h"
40 #include "xfs_xattr.h"
42 #include <linux/mount.h>
43 #include <linux/namei.h>
44 #include <linux/fileattr.h>
47 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
48 * a file or fs handle.
50 * XFS_IOC_PATH_TO_FSHANDLE
51 * returns fs handle for a mount point or path within that mount point
52 * XFS_IOC_FD_TO_HANDLE
53 * returns full handle for a FD opened in user space
54 * XFS_IOC_PATH_TO_HANDLE
55 * returns full handle for a path
60 xfs_fsop_handlereq_t *hreq)
70 if (cmd == XFS_IOC_FD_TO_HANDLE) {
74 inode = file_inode(f.file);
76 error = user_path_at(AT_FDCWD, hreq->path, 0, &path);
79 inode = d_inode(path.dentry);
84 * We can only generate handles for inodes residing on a XFS filesystem,
85 * and only for regular files, directories or symbolic links.
88 if (inode->i_sb->s_magic != XFS_SB_MAGIC)
92 if (!S_ISREG(inode->i_mode) &&
93 !S_ISDIR(inode->i_mode) &&
94 !S_ISLNK(inode->i_mode))
98 memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));
100 if (cmd == XFS_IOC_PATH_TO_FSHANDLE) {
102 * This handle only contains an fsid, zero the rest.
104 memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
105 hsize = sizeof(xfs_fsid_t);
107 handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
108 sizeof(handle.ha_fid.fid_len);
109 handle.ha_fid.fid_pad = 0;
110 handle.ha_fid.fid_gen = inode->i_generation;
111 handle.ha_fid.fid_ino = ip->i_ino;
112 hsize = sizeof(xfs_handle_t);
116 if (copy_to_user(hreq->ohandle, &handle, hsize) ||
117 copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
123 if (cmd == XFS_IOC_FD_TO_HANDLE)
131 * No need to do permission checks on the various pathname components
132 * as the handle operations are privileged.
135 xfs_handle_acceptable(
137 struct dentry *dentry)
143 * Convert userspace handle data into a dentry.
146 xfs_handle_to_dentry(
147 struct file *parfilp,
148 void __user *uhandle,
152 struct xfs_fid64 fid;
155 * Only allow handle opens under a directory.
157 if (!S_ISDIR(file_inode(parfilp)->i_mode))
158 return ERR_PTR(-ENOTDIR);
160 if (hlen != sizeof(xfs_handle_t))
161 return ERR_PTR(-EINVAL);
162 if (copy_from_user(&handle, uhandle, hlen))
163 return ERR_PTR(-EFAULT);
164 if (handle.ha_fid.fid_len !=
165 sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len))
166 return ERR_PTR(-EINVAL);
168 memset(&fid, 0, sizeof(struct fid));
169 fid.ino = handle.ha_fid.fid_ino;
170 fid.gen = handle.ha_fid.fid_gen;
172 return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3,
173 FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG,
174 xfs_handle_acceptable, NULL);
177 STATIC struct dentry *
178 xfs_handlereq_to_dentry(
179 struct file *parfilp,
180 xfs_fsop_handlereq_t *hreq)
182 return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen);
187 struct file *parfilp,
188 xfs_fsop_handlereq_t *hreq)
190 const struct cred *cred = current_cred();
196 struct dentry *dentry;
200 if (!capable(CAP_SYS_ADMIN))
203 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
205 return PTR_ERR(dentry);
206 inode = d_inode(dentry);
208 /* Restrict xfs_open_by_handle to directories & regular files. */
209 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
214 #if BITS_PER_LONG != 32
215 hreq->oflags |= O_LARGEFILE;
218 permflag = hreq->oflags;
219 fmode = OPEN_FMODE(permflag);
220 if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
221 (fmode & FMODE_WRITE) && IS_APPEND(inode)) {
226 if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
231 /* Can't write directories. */
232 if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) {
237 fd = get_unused_fd_flags(0);
243 path.mnt = parfilp->f_path.mnt;
244 path.dentry = dentry;
245 filp = dentry_open(&path, hreq->oflags, cred);
249 return PTR_ERR(filp);
252 if (S_ISREG(inode->i_mode)) {
253 filp->f_flags |= O_NOATIME;
254 filp->f_mode |= FMODE_NOCMTIME;
257 fd_install(fd, filp);
266 xfs_readlink_by_handle(
267 struct file *parfilp,
268 xfs_fsop_handlereq_t *hreq)
270 struct dentry *dentry;
274 if (!capable(CAP_SYS_ADMIN))
277 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
279 return PTR_ERR(dentry);
281 /* Restrict this handle operation to symlinks only. */
282 if (!d_is_symlink(dentry)) {
287 if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
292 error = vfs_readlink(dentry, hreq->ohandle, olen);
300 * Format an attribute and copy it out to the user's buffer.
301 * Take care to check values and protect against them changing later,
302 * we may be reading them directly out of a user buffer.
305 xfs_ioc_attr_put_listent(
306 struct xfs_attr_list_context *context,
312 struct xfs_attrlist *alist = context->buffer;
313 struct xfs_attrlist_ent *aep;
316 ASSERT(!context->seen_enough);
317 ASSERT(context->count >= 0);
318 ASSERT(context->count < (ATTR_MAX_VALUELEN/8));
319 ASSERT(context->firstu >= sizeof(*alist));
320 ASSERT(context->firstu <= context->bufsize);
323 * Only list entries in the right namespace.
325 if (context->attr_filter != (flags & XFS_ATTR_NSP_ONDISK_MASK))
328 arraytop = sizeof(*alist) +
329 context->count * sizeof(alist->al_offset[0]);
331 /* decrement by the actual bytes used by the attr */
332 context->firstu -= round_up(offsetof(struct xfs_attrlist_ent, a_name) +
333 namelen + 1, sizeof(uint32_t));
334 if (context->firstu < arraytop) {
335 trace_xfs_attr_list_full(context);
337 context->seen_enough = 1;
341 aep = context->buffer + context->firstu;
342 aep->a_valuelen = valuelen;
343 memcpy(aep->a_name, name, namelen);
344 aep->a_name[namelen] = 0;
345 alist->al_offset[context->count++] = context->firstu;
346 alist->al_count = context->count;
347 trace_xfs_attr_list_add(context);
354 if (ioc_flags & XFS_IOC_ATTR_ROOT)
355 return XFS_ATTR_ROOT;
356 if (ioc_flags & XFS_IOC_ATTR_SECURE)
357 return XFS_ATTR_SECURE;
365 if (ioc_flags & XFS_IOC_ATTR_CREATE)
367 if (ioc_flags & XFS_IOC_ATTR_REPLACE)
368 return XATTR_REPLACE;
374 struct xfs_inode *dp,
378 struct xfs_attrlist_cursor __user *ucursor)
380 struct xfs_attr_list_context context = { };
381 struct xfs_attrlist *alist;
385 if (bufsize < sizeof(struct xfs_attrlist) ||
386 bufsize > XFS_XATTR_LIST_MAX)
390 * Reject flags, only allow namespaces.
392 if (flags & ~(XFS_IOC_ATTR_ROOT | XFS_IOC_ATTR_SECURE))
394 if (flags == (XFS_IOC_ATTR_ROOT | XFS_IOC_ATTR_SECURE))
398 * Validate the cursor.
400 if (copy_from_user(&context.cursor, ucursor, sizeof(context.cursor)))
402 if (context.cursor.pad1 || context.cursor.pad2)
404 if (!context.cursor.initted &&
405 (context.cursor.hashval || context.cursor.blkno ||
406 context.cursor.offset))
409 buffer = kvzalloc(bufsize, GFP_KERNEL);
414 * Initialize the output buffer.
418 context.attr_filter = xfs_attr_filter(flags);
419 context.buffer = buffer;
420 context.bufsize = round_down(bufsize, sizeof(uint32_t));
421 context.firstu = context.bufsize;
422 context.put_listent = xfs_ioc_attr_put_listent;
424 alist = context.buffer;
427 alist->al_offset[0] = context.bufsize;
429 error = xfs_attr_list(&context);
433 if (copy_to_user(ubuf, buffer, bufsize) ||
434 copy_to_user(ucursor, &context.cursor, sizeof(context.cursor)))
442 xfs_attrlist_by_handle(
443 struct file *parfilp,
444 struct xfs_fsop_attrlist_handlereq __user *p)
446 struct xfs_fsop_attrlist_handlereq al_hreq;
447 struct dentry *dentry;
450 if (!capable(CAP_SYS_ADMIN))
452 if (copy_from_user(&al_hreq, p, sizeof(al_hreq)))
455 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
457 return PTR_ERR(dentry);
459 error = xfs_ioc_attr_list(XFS_I(d_inode(dentry)), al_hreq.buffer,
460 al_hreq.buflen, al_hreq.flags, &p->pos);
466 xfs_attrmulti_attr_get(
469 unsigned char __user *ubuf,
473 struct xfs_da_args args = {
475 .attr_filter = xfs_attr_filter(flags),
476 .attr_flags = xfs_attr_flags(flags),
478 .namelen = strlen(name),
483 if (*len > XFS_XATTR_SIZE_MAX)
486 error = xfs_attr_get(&args);
490 *len = args.valuelen;
491 if (copy_to_user(ubuf, args.value, args.valuelen))
495 kmem_free(args.value);
500 xfs_attrmulti_attr_set(
503 const unsigned char __user *ubuf,
507 struct xfs_da_args args = {
509 .attr_filter = xfs_attr_filter(flags),
510 .attr_flags = xfs_attr_flags(flags),
512 .namelen = strlen(name),
516 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
520 if (len > XFS_XATTR_SIZE_MAX)
522 args.value = memdup_user(ubuf, len);
523 if (IS_ERR(args.value))
524 return PTR_ERR(args.value);
528 error = xfs_attr_change(&args);
529 if (!error && (flags & XFS_IOC_ATTR_ROOT))
530 xfs_forget_acl(inode, name);
536 xfs_ioc_attrmulti_one(
537 struct file *parfilp,
548 if ((flags & XFS_IOC_ATTR_ROOT) && (flags & XFS_IOC_ATTR_SECURE))
551 name = strndup_user(uname, MAXNAMELEN);
553 return PTR_ERR(name);
557 error = xfs_attrmulti_attr_get(inode, name, value, len, flags);
564 error = mnt_want_write_file(parfilp);
567 error = xfs_attrmulti_attr_set(inode, name, value, *len, flags);
568 mnt_drop_write_file(parfilp);
580 xfs_attrmulti_by_handle(
581 struct file *parfilp,
585 xfs_attr_multiop_t *ops;
586 xfs_fsop_attrmulti_handlereq_t am_hreq;
587 struct dentry *dentry;
588 unsigned int i, size;
590 if (!capable(CAP_SYS_ADMIN))
592 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
596 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
599 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
601 return PTR_ERR(dentry);
604 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
605 if (!size || size > 16 * PAGE_SIZE)
608 ops = memdup_user(am_hreq.ops, size);
610 error = PTR_ERR(ops);
615 for (i = 0; i < am_hreq.opcount; i++) {
616 ops[i].am_error = xfs_ioc_attrmulti_one(parfilp,
617 d_inode(dentry), ops[i].am_opcode,
618 ops[i].am_attrname, ops[i].am_attrvalue,
619 &ops[i].am_length, ops[i].am_flags);
622 if (copy_to_user(am_hreq.ops, ops, size))
631 /* Return 0 on success or positive error */
633 xfs_fsbulkstat_one_fmt(
634 struct xfs_ibulk *breq,
635 const struct xfs_bulkstat *bstat)
637 struct xfs_bstat bs1;
639 xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat);
640 if (copy_to_user(breq->ubuffer, &bs1, sizeof(bs1)))
642 return xfs_ibulk_advance(breq, sizeof(struct xfs_bstat));
647 struct xfs_ibulk *breq,
648 const struct xfs_inumbers *igrp)
650 struct xfs_inogrp ig1;
652 xfs_inumbers_to_inogrp(&ig1, igrp);
653 if (copy_to_user(breq->ubuffer, &ig1, sizeof(struct xfs_inogrp)))
655 return xfs_ibulk_advance(breq, sizeof(struct xfs_inogrp));
664 struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount;
665 struct xfs_fsop_bulkreq bulkreq;
666 struct xfs_ibulk breq = {
668 .idmap = file_mnt_idmap(file),
674 /* done = 1 if there are more stats to get and if bulkstat */
675 /* should be called again (unused here, but used in dmapi) */
677 if (!capable(CAP_SYS_ADMIN))
680 if (xfs_is_shutdown(mp))
683 if (copy_from_user(&bulkreq, arg, sizeof(struct xfs_fsop_bulkreq)))
686 if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64)))
689 if (bulkreq.icount <= 0)
692 if (bulkreq.ubuffer == NULL)
695 breq.ubuffer = bulkreq.ubuffer;
696 breq.icount = bulkreq.icount;
699 * FSBULKSTAT_SINGLE expects that *lastip contains the inode number
700 * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect
701 * that *lastip contains either zero or the number of the last inode to
702 * be examined by the previous call and return results starting with
703 * the next inode after that. The new bulk request back end functions
704 * take the inode to start with, so we have to compute the startino
705 * parameter from lastino to maintain correct function. lastino == 0
706 * is a special case because it has traditionally meant "first inode
709 if (cmd == XFS_IOC_FSINUMBERS) {
710 breq.startino = lastino ? lastino + 1 : 0;
711 error = xfs_inumbers(&breq, xfs_fsinumbers_fmt);
712 lastino = breq.startino - 1;
713 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) {
714 breq.startino = lastino;
716 error = xfs_bulkstat_one(&breq, xfs_fsbulkstat_one_fmt);
717 } else { /* XFS_IOC_FSBULKSTAT */
718 breq.startino = lastino ? lastino + 1 : 0;
719 error = xfs_bulkstat(&breq, xfs_fsbulkstat_one_fmt);
720 lastino = breq.startino - 1;
726 if (bulkreq.lastip != NULL &&
727 copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t)))
730 if (bulkreq.ocount != NULL &&
731 copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32)))
737 /* Return 0 on success or positive error */
740 struct xfs_ibulk *breq,
741 const struct xfs_bulkstat *bstat)
743 if (copy_to_user(breq->ubuffer, bstat, sizeof(struct xfs_bulkstat)))
745 return xfs_ibulk_advance(breq, sizeof(struct xfs_bulkstat));
749 * Check the incoming bulk request @hdr from userspace and initialize the
750 * internal @breq bulk request appropriately. Returns 0 if the bulk request
751 * should proceed; -ECANCELED if there's nothing to do; or the usual
752 * negative error code.
756 struct xfs_mount *mp,
757 const struct xfs_bulk_ireq *hdr,
758 struct xfs_ibulk *breq,
759 void __user *ubuffer)
761 if (hdr->icount == 0 ||
762 (hdr->flags & ~XFS_BULK_IREQ_FLAGS_ALL) ||
763 memchr_inv(hdr->reserved, 0, sizeof(hdr->reserved)))
766 breq->startino = hdr->ino;
767 breq->ubuffer = ubuffer;
768 breq->icount = hdr->icount;
773 * The @ino parameter is a special value, so we must look it up here.
774 * We're not allowed to have IREQ_AGNO, and we only return one inode
777 if (hdr->flags & XFS_BULK_IREQ_SPECIAL) {
778 if (hdr->flags & XFS_BULK_IREQ_AGNO)
782 case XFS_BULK_IREQ_SPECIAL_ROOT:
783 breq->startino = mp->m_sb.sb_rootino;
792 * The IREQ_AGNO flag means that we only want results from a given AG.
793 * If @hdr->ino is zero, we start iterating in that AG. If @hdr->ino is
794 * beyond the specified AG then we return no results.
796 if (hdr->flags & XFS_BULK_IREQ_AGNO) {
797 if (hdr->agno >= mp->m_sb.sb_agcount)
800 if (breq->startino == 0)
801 breq->startino = XFS_AGINO_TO_INO(mp, hdr->agno, 0);
802 else if (XFS_INO_TO_AGNO(mp, breq->startino) < hdr->agno)
805 breq->flags |= XFS_IBULK_SAME_AG;
807 /* Asking for an inode past the end of the AG? We're done! */
808 if (XFS_INO_TO_AGNO(mp, breq->startino) > hdr->agno)
810 } else if (hdr->agno)
813 /* Asking for an inode past the end of the FS? We're done! */
814 if (XFS_INO_TO_AGNO(mp, breq->startino) >= mp->m_sb.sb_agcount)
817 if (hdr->flags & XFS_BULK_IREQ_NREXT64)
818 breq->flags |= XFS_IBULK_NREXT64;
824 * Update the userspace bulk request @hdr to reflect the end state of the
825 * internal bulk request @breq.
828 xfs_bulk_ireq_teardown(
829 struct xfs_bulk_ireq *hdr,
830 struct xfs_ibulk *breq)
832 hdr->ino = breq->startino;
833 hdr->ocount = breq->ocount;
836 /* Handle the v5 bulkstat ioctl. */
841 struct xfs_bulkstat_req __user *arg)
843 struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount;
844 struct xfs_bulk_ireq hdr;
845 struct xfs_ibulk breq = {
847 .idmap = file_mnt_idmap(file),
851 if (!capable(CAP_SYS_ADMIN))
854 if (xfs_is_shutdown(mp))
857 if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr)))
860 error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->bulkstat);
861 if (error == -ECANCELED)
866 error = xfs_bulkstat(&breq, xfs_bulkstat_fmt);
871 xfs_bulk_ireq_teardown(&hdr, &breq);
872 if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr)))
880 struct xfs_ibulk *breq,
881 const struct xfs_inumbers *igrp)
883 if (copy_to_user(breq->ubuffer, igrp, sizeof(struct xfs_inumbers)))
885 return xfs_ibulk_advance(breq, sizeof(struct xfs_inumbers));
888 /* Handle the v5 inumbers ioctl. */
891 struct xfs_mount *mp,
893 struct xfs_inumbers_req __user *arg)
895 struct xfs_bulk_ireq hdr;
896 struct xfs_ibulk breq = {
901 if (!capable(CAP_SYS_ADMIN))
904 if (xfs_is_shutdown(mp))
907 if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr)))
910 error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->inumbers);
911 if (error == -ECANCELED)
916 error = xfs_inumbers(&breq, xfs_inumbers_fmt);
921 xfs_bulk_ireq_teardown(&hdr, &breq);
922 if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr)))
930 struct xfs_mount *mp,
934 struct xfs_fsop_geom fsgeo;
937 xfs_fs_geometry(mp, &fsgeo, struct_version);
939 if (struct_version <= 3)
940 len = sizeof(struct xfs_fsop_geom_v1);
941 else if (struct_version == 4)
942 len = sizeof(struct xfs_fsop_geom_v4);
944 xfs_fsop_geom_health(mp, &fsgeo);
948 if (copy_to_user(arg, &fsgeo, len))
955 struct xfs_mount *mp,
958 struct xfs_perag *pag;
959 struct xfs_ag_geometry ageo;
962 if (copy_from_user(&ageo, arg, sizeof(ageo)))
966 if (memchr_inv(&ageo.ag_reserved, 0, sizeof(ageo.ag_reserved)))
969 pag = xfs_perag_get(mp, ageo.ag_number);
973 error = xfs_ag_get_geometry(pag, &ageo);
978 if (copy_to_user(arg, &ageo, sizeof(ageo)))
984 * Linux extended inode flags interface.
989 struct xfs_inode *ip,
993 struct xfs_mount *mp = ip->i_mount;
994 struct xfs_ifork *ifp = xfs_ifork_ptr(ip, whichfork);
996 fileattr_fill_xflags(fa, xfs_ip2xflags(ip));
998 if (ip->i_diflags & XFS_DIFLAG_EXTSIZE) {
999 fa->fsx_extsize = XFS_FSB_TO_B(mp, ip->i_extsize);
1000 } else if (ip->i_diflags & XFS_DIFLAG_EXTSZINHERIT) {
1002 * Don't let a misaligned extent size hint on a directory
1003 * escape to userspace if it won't pass the setattr checks
1006 if ((ip->i_diflags & XFS_DIFLAG_RTINHERIT) &&
1007 ip->i_extsize % mp->m_sb.sb_rextsize > 0) {
1008 fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE |
1009 FS_XFLAG_EXTSZINHERIT);
1010 fa->fsx_extsize = 0;
1012 fa->fsx_extsize = XFS_FSB_TO_B(mp, ip->i_extsize);
1016 if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE)
1017 fa->fsx_cowextsize = XFS_FSB_TO_B(mp, ip->i_cowextsize);
1018 fa->fsx_projid = ip->i_projid;
1019 if (ifp && !xfs_need_iread_extents(ifp))
1020 fa->fsx_nextents = xfs_iext_count(ifp);
1022 fa->fsx_nextents = xfs_ifork_nextents(ifp);
1026 xfs_ioc_fsgetxattra(
1032 xfs_ilock(ip, XFS_ILOCK_SHARED);
1033 xfs_fill_fsxattr(ip, XFS_ATTR_FORK, &fa);
1034 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1036 return copy_fsxattr_to_user(&fa, arg);
1041 struct dentry *dentry,
1042 struct fileattr *fa)
1044 struct xfs_inode *ip = XFS_I(d_inode(dentry));
1046 if (d_is_special(dentry))
1049 xfs_ilock(ip, XFS_ILOCK_SHARED);
1050 xfs_fill_fsxattr(ip, XFS_DATA_FORK, fa);
1051 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1058 struct xfs_inode *ip,
1059 unsigned int xflags)
1061 /* can't set PREALLOC this way, just preserve it */
1063 (ip->i_diflags & XFS_DIFLAG_PREALLOC);
1065 if (xflags & FS_XFLAG_IMMUTABLE)
1066 di_flags |= XFS_DIFLAG_IMMUTABLE;
1067 if (xflags & FS_XFLAG_APPEND)
1068 di_flags |= XFS_DIFLAG_APPEND;
1069 if (xflags & FS_XFLAG_SYNC)
1070 di_flags |= XFS_DIFLAG_SYNC;
1071 if (xflags & FS_XFLAG_NOATIME)
1072 di_flags |= XFS_DIFLAG_NOATIME;
1073 if (xflags & FS_XFLAG_NODUMP)
1074 di_flags |= XFS_DIFLAG_NODUMP;
1075 if (xflags & FS_XFLAG_NODEFRAG)
1076 di_flags |= XFS_DIFLAG_NODEFRAG;
1077 if (xflags & FS_XFLAG_FILESTREAM)
1078 di_flags |= XFS_DIFLAG_FILESTREAM;
1079 if (S_ISDIR(VFS_I(ip)->i_mode)) {
1080 if (xflags & FS_XFLAG_RTINHERIT)
1081 di_flags |= XFS_DIFLAG_RTINHERIT;
1082 if (xflags & FS_XFLAG_NOSYMLINKS)
1083 di_flags |= XFS_DIFLAG_NOSYMLINKS;
1084 if (xflags & FS_XFLAG_EXTSZINHERIT)
1085 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
1086 if (xflags & FS_XFLAG_PROJINHERIT)
1087 di_flags |= XFS_DIFLAG_PROJINHERIT;
1088 } else if (S_ISREG(VFS_I(ip)->i_mode)) {
1089 if (xflags & FS_XFLAG_REALTIME)
1090 di_flags |= XFS_DIFLAG_REALTIME;
1091 if (xflags & FS_XFLAG_EXTSIZE)
1092 di_flags |= XFS_DIFLAG_EXTSIZE;
1100 struct xfs_inode *ip,
1101 unsigned int xflags)
1103 uint64_t di_flags2 =
1104 (ip->i_diflags2 & (XFS_DIFLAG2_REFLINK |
1105 XFS_DIFLAG2_BIGTIME |
1106 XFS_DIFLAG2_NREXT64));
1108 if (xflags & FS_XFLAG_DAX)
1109 di_flags2 |= XFS_DIFLAG2_DAX;
1110 if (xflags & FS_XFLAG_COWEXTSIZE)
1111 di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
1117 xfs_ioctl_setattr_xflags(
1118 struct xfs_trans *tp,
1119 struct xfs_inode *ip,
1120 struct fileattr *fa)
1122 struct xfs_mount *mp = ip->i_mount;
1125 /* Can't change realtime flag if any extents are allocated. */
1126 if ((ip->i_df.if_nextents || ip->i_delayed_blks) &&
1127 XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME))
1130 /* If realtime flag is set then must have realtime device */
1131 if (fa->fsx_xflags & FS_XFLAG_REALTIME) {
1132 if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
1133 (ip->i_extsize % mp->m_sb.sb_rextsize))
1137 /* Clear reflink if we are actually able to set the rt flag. */
1138 if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
1139 ip->i_diflags2 &= ~XFS_DIFLAG2_REFLINK;
1141 /* diflags2 only valid for v3 inodes. */
1142 i_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
1143 if (i_flags2 && !xfs_has_v3inodes(mp))
1146 ip->i_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
1147 ip->i_diflags2 = i_flags2;
1149 xfs_diflags_to_iflags(ip, false);
1150 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1151 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1152 XFS_STATS_INC(mp, xs_ig_attrchg);
1157 xfs_ioctl_setattr_prepare_dax(
1158 struct xfs_inode *ip,
1159 struct fileattr *fa)
1161 struct xfs_mount *mp = ip->i_mount;
1162 struct inode *inode = VFS_I(ip);
1164 if (S_ISDIR(inode->i_mode))
1167 if (xfs_has_dax_always(mp) || xfs_has_dax_never(mp))
1170 if (((fa->fsx_xflags & FS_XFLAG_DAX) &&
1171 !(ip->i_diflags2 & XFS_DIFLAG2_DAX)) ||
1172 (!(fa->fsx_xflags & FS_XFLAG_DAX) &&
1173 (ip->i_diflags2 & XFS_DIFLAG2_DAX)))
1174 d_mark_dontcache(inode);
1178 * Set up the transaction structure for the setattr operation, checking that we
1179 * have permission to do so. On success, return a clean transaction and the
1180 * inode locked exclusively ready for further operation specific checks. On
1181 * failure, return an error without modifying or locking the inode.
1183 static struct xfs_trans *
1184 xfs_ioctl_setattr_get_trans(
1185 struct xfs_inode *ip,
1186 struct xfs_dquot *pdqp)
1188 struct xfs_mount *mp = ip->i_mount;
1189 struct xfs_trans *tp;
1192 if (xfs_is_readonly(mp))
1195 if (xfs_is_shutdown(mp))
1198 error = xfs_trans_alloc_ichange(ip, NULL, NULL, pdqp,
1199 has_capability_noaudit(current, CAP_FOWNER), &tp);
1203 if (xfs_has_wsync(mp))
1204 xfs_trans_set_sync(tp);
1209 return ERR_PTR(error);
1213 * Validate a proposed extent size hint. For regular files, the hint can only
1214 * be changed if no extents are allocated.
1217 xfs_ioctl_setattr_check_extsize(
1218 struct xfs_inode *ip,
1219 struct fileattr *fa)
1221 struct xfs_mount *mp = ip->i_mount;
1222 xfs_failaddr_t failaddr;
1223 uint16_t new_diflags;
1228 if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_df.if_nextents &&
1229 XFS_FSB_TO_B(mp, ip->i_extsize) != fa->fsx_extsize)
1232 if (fa->fsx_extsize & mp->m_blockmask)
1235 new_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
1238 * Inode verifiers do not check that the extent size hint is an integer
1239 * multiple of the rt extent size on a directory with both rtinherit
1240 * and extszinherit flags set. Don't let sysadmins misconfigure
1243 if ((new_diflags & XFS_DIFLAG_RTINHERIT) &&
1244 (new_diflags & XFS_DIFLAG_EXTSZINHERIT)) {
1245 unsigned int rtextsize_bytes;
1247 rtextsize_bytes = XFS_FSB_TO_B(mp, mp->m_sb.sb_rextsize);
1248 if (fa->fsx_extsize % rtextsize_bytes)
1252 failaddr = xfs_inode_validate_extsize(ip->i_mount,
1253 XFS_B_TO_FSB(mp, fa->fsx_extsize),
1254 VFS_I(ip)->i_mode, new_diflags);
1255 return failaddr != NULL ? -EINVAL : 0;
1259 xfs_ioctl_setattr_check_cowextsize(
1260 struct xfs_inode *ip,
1261 struct fileattr *fa)
1263 struct xfs_mount *mp = ip->i_mount;
1264 xfs_failaddr_t failaddr;
1265 uint64_t new_diflags2;
1266 uint16_t new_diflags;
1271 if (fa->fsx_cowextsize & mp->m_blockmask)
1274 new_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
1275 new_diflags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
1277 failaddr = xfs_inode_validate_cowextsize(ip->i_mount,
1278 XFS_B_TO_FSB(mp, fa->fsx_cowextsize),
1279 VFS_I(ip)->i_mode, new_diflags, new_diflags2);
1280 return failaddr != NULL ? -EINVAL : 0;
1284 xfs_ioctl_setattr_check_projid(
1285 struct xfs_inode *ip,
1286 struct fileattr *fa)
1291 /* Disallow 32bit project ids if 32bit IDs are not enabled. */
1292 if (fa->fsx_projid > (uint16_t)-1 &&
1293 !xfs_has_projid32(ip->i_mount))
1300 struct mnt_idmap *idmap,
1301 struct dentry *dentry,
1302 struct fileattr *fa)
1304 struct xfs_inode *ip = XFS_I(d_inode(dentry));
1305 struct xfs_mount *mp = ip->i_mount;
1306 struct xfs_trans *tp;
1307 struct xfs_dquot *pdqp = NULL;
1308 struct xfs_dquot *olddquot = NULL;
1311 trace_xfs_ioctl_setattr(ip);
1313 if (d_is_special(dentry))
1316 if (!fa->fsx_valid) {
1317 if (fa->flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL |
1318 FS_NOATIME_FL | FS_NODUMP_FL |
1319 FS_SYNC_FL | FS_DAX_FL | FS_PROJINHERIT_FL))
1323 error = xfs_ioctl_setattr_check_projid(ip, fa);
1328 * If disk quotas is on, we make sure that the dquots do exist on disk,
1329 * before we start any other transactions. Trying to do this later
1330 * is messy. We don't care to take a readlock to look at the ids
1331 * in inode here, because we can't hold it across the trans_reserve.
1332 * If the IDs do change before we take the ilock, we're covered
1333 * because the i_*dquot fields will get updated anyway.
1335 if (fa->fsx_valid && XFS_IS_QUOTA_ON(mp)) {
1336 error = xfs_qm_vop_dqalloc(ip, VFS_I(ip)->i_uid,
1337 VFS_I(ip)->i_gid, fa->fsx_projid,
1338 XFS_QMOPT_PQUOTA, NULL, NULL, &pdqp);
1343 xfs_ioctl_setattr_prepare_dax(ip, fa);
1345 tp = xfs_ioctl_setattr_get_trans(ip, pdqp);
1347 error = PTR_ERR(tp);
1348 goto error_free_dquots;
1351 error = xfs_ioctl_setattr_check_extsize(ip, fa);
1353 goto error_trans_cancel;
1355 error = xfs_ioctl_setattr_check_cowextsize(ip, fa);
1357 goto error_trans_cancel;
1359 error = xfs_ioctl_setattr_xflags(tp, ip, fa);
1361 goto error_trans_cancel;
1366 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1367 * overrides the following restrictions:
1369 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1370 * successful return from chown()
1373 if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
1374 !capable_wrt_inode_uidgid(idmap, VFS_I(ip), CAP_FSETID))
1375 VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
1377 /* Change the ownerships and register project quota modifications */
1378 if (ip->i_projid != fa->fsx_projid) {
1379 if (XFS_IS_PQUOTA_ON(mp)) {
1380 olddquot = xfs_qm_vop_chown(tp, ip,
1381 &ip->i_pdquot, pdqp);
1383 ip->i_projid = fa->fsx_projid;
1387 * Only set the extent size hint if we've already determined that the
1388 * extent size hint should be set on the inode. If no extent size flags
1389 * are set on the inode then unconditionally clear the extent size hint.
1391 if (ip->i_diflags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
1392 ip->i_extsize = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1396 if (xfs_has_v3inodes(mp)) {
1397 if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE)
1398 ip->i_cowextsize = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
1400 ip->i_cowextsize = 0;
1404 error = xfs_trans_commit(tp);
1407 * Release any dquot(s) the inode had kept before chown.
1409 xfs_qm_dqrele(olddquot);
1410 xfs_qm_dqrele(pdqp);
1415 xfs_trans_cancel(tp);
1417 xfs_qm_dqrele(pdqp);
1424 struct getbmapx __user *u,
1427 if (put_user(p->bmv_offset, &u->bmv_offset) ||
1428 put_user(p->bmv_block, &u->bmv_block) ||
1429 put_user(p->bmv_length, &u->bmv_length) ||
1430 put_user(0, &u->bmv_count) ||
1431 put_user(0, &u->bmv_entries))
1433 if (recsize < sizeof(struct getbmapx))
1435 if (put_user(0, &u->bmv_iflags) ||
1436 put_user(p->bmv_oflags, &u->bmv_oflags) ||
1437 put_user(0, &u->bmv_unused1) ||
1438 put_user(0, &u->bmv_unused2))
1449 struct getbmapx bmx = { 0 };
1450 struct kgetbmap *buf;
1455 case XFS_IOC_GETBMAPA:
1456 bmx.bmv_iflags = BMV_IF_ATTRFORK;
1458 case XFS_IOC_GETBMAP:
1459 /* struct getbmap is a strict subset of struct getbmapx. */
1460 recsize = sizeof(struct getbmap);
1462 case XFS_IOC_GETBMAPX:
1463 recsize = sizeof(struct getbmapx);
1469 if (copy_from_user(&bmx, arg, recsize))
1472 if (bmx.bmv_count < 2)
1474 if (bmx.bmv_count >= INT_MAX / recsize)
1477 buf = kvcalloc(bmx.bmv_count, sizeof(*buf), GFP_KERNEL);
1481 error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, buf);
1486 if (copy_to_user(arg, &bmx, recsize))
1490 for (i = 0; i < bmx.bmv_entries; i++) {
1491 if (!xfs_getbmap_format(buf + i, arg, recsize))
1504 struct xfs_inode *ip,
1505 struct fsmap_head __user *arg)
1507 struct xfs_fsmap_head xhead = {0};
1508 struct fsmap_head head;
1511 __u32 last_flags = 0;
1515 if (copy_from_user(&head, arg, sizeof(struct fsmap_head)))
1517 if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) ||
1518 memchr_inv(head.fmh_keys[0].fmr_reserved, 0,
1519 sizeof(head.fmh_keys[0].fmr_reserved)) ||
1520 memchr_inv(head.fmh_keys[1].fmr_reserved, 0,
1521 sizeof(head.fmh_keys[1].fmr_reserved)))
1525 * Use an internal memory buffer so that we don't have to copy fsmap
1526 * data to userspace while holding locks. Start by trying to allocate
1527 * up to 128k for the buffer, but fall back to a single page if needed.
1529 count = min_t(unsigned int, head.fmh_count,
1530 131072 / sizeof(struct fsmap));
1531 recs = kvcalloc(count, sizeof(struct fsmap), GFP_KERNEL);
1533 count = min_t(unsigned int, head.fmh_count,
1534 PAGE_SIZE / sizeof(struct fsmap));
1535 recs = kvcalloc(count, sizeof(struct fsmap), GFP_KERNEL);
1540 xhead.fmh_iflags = head.fmh_iflags;
1541 xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]);
1542 xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]);
1544 trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]);
1545 trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]);
1547 head.fmh_entries = 0;
1549 struct fsmap __user *user_recs;
1550 struct fsmap *last_rec;
1552 user_recs = &arg->fmh_recs[head.fmh_entries];
1553 xhead.fmh_entries = 0;
1554 xhead.fmh_count = min_t(unsigned int, count,
1555 head.fmh_count - head.fmh_entries);
1557 /* Run query, record how many entries we got. */
1558 error = xfs_getfsmap(ip->i_mount, &xhead, recs);
1562 * There are no more records in the result set. Copy
1563 * whatever we got to userspace and break out.
1569 * The internal memory buffer is full. Copy whatever
1570 * records we got to userspace and go again if we have
1571 * not yet filled the userspace buffer.
1578 head.fmh_entries += xhead.fmh_entries;
1579 head.fmh_oflags = xhead.fmh_oflags;
1582 * If the caller wanted a record count or there aren't any
1583 * new records to return, we're done.
1585 if (head.fmh_count == 0 || xhead.fmh_entries == 0)
1588 /* Copy all the records we got out to userspace. */
1589 if (copy_to_user(user_recs, recs,
1590 xhead.fmh_entries * sizeof(struct fsmap))) {
1595 /* Remember the last record flags we copied to userspace. */
1596 last_rec = &recs[xhead.fmh_entries - 1];
1597 last_flags = last_rec->fmr_flags;
1599 /* Set up the low key for the next iteration. */
1600 xfs_fsmap_to_internal(&xhead.fmh_keys[0], last_rec);
1601 trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]);
1602 } while (!done && head.fmh_entries < head.fmh_count);
1605 * If there are no more records in the query result set and we're not
1606 * in counting mode, mark the last record returned with the LAST flag.
1608 if (done && head.fmh_count > 0 && head.fmh_entries > 0) {
1609 struct fsmap __user *user_rec;
1611 last_flags |= FMR_OF_LAST;
1612 user_rec = &arg->fmh_recs[head.fmh_entries - 1];
1614 if (copy_to_user(&user_rec->fmr_flags, &last_flags,
1615 sizeof(last_flags))) {
1621 /* copy back header */
1622 if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) {
1633 xfs_ioc_scrub_metadata(
1637 struct xfs_scrub_metadata scrub;
1640 if (!capable(CAP_SYS_ADMIN))
1643 if (copy_from_user(&scrub, arg, sizeof(scrub)))
1646 error = xfs_scrub_metadata(file, &scrub);
1650 if (copy_to_user(arg, &scrub, sizeof(scrub)))
1660 xfs_inode_t *ip, *tip;
1664 /* Pull information for the target fd */
1665 f = fdget((int)sxp->sx_fdtarget);
1671 if (!(f.file->f_mode & FMODE_WRITE) ||
1672 !(f.file->f_mode & FMODE_READ) ||
1673 (f.file->f_flags & O_APPEND)) {
1678 tmp = fdget((int)sxp->sx_fdtmp);
1684 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1685 !(tmp.file->f_mode & FMODE_READ) ||
1686 (tmp.file->f_flags & O_APPEND)) {
1688 goto out_put_tmp_file;
1691 if (IS_SWAPFILE(file_inode(f.file)) ||
1692 IS_SWAPFILE(file_inode(tmp.file))) {
1694 goto out_put_tmp_file;
1698 * We need to ensure that the fds passed in point to XFS inodes
1699 * before we cast and access them as XFS structures as we have no
1700 * control over what the user passes us here.
1702 if (f.file->f_op != &xfs_file_operations ||
1703 tmp.file->f_op != &xfs_file_operations) {
1705 goto out_put_tmp_file;
1708 ip = XFS_I(file_inode(f.file));
1709 tip = XFS_I(file_inode(tmp.file));
1711 if (ip->i_mount != tip->i_mount) {
1713 goto out_put_tmp_file;
1716 if (ip->i_ino == tip->i_ino) {
1718 goto out_put_tmp_file;
1721 if (xfs_is_shutdown(ip->i_mount)) {
1723 goto out_put_tmp_file;
1726 error = xfs_swap_extents(ip, tip, sxp);
1738 struct xfs_mount *mp,
1739 char __user *user_label)
1741 struct xfs_sb *sbp = &mp->m_sb;
1742 char label[XFSLABEL_MAX + 1];
1745 BUILD_BUG_ON(sizeof(sbp->sb_fname) > FSLABEL_MAX);
1747 /* 1 larger than sb_fname, so this ensures a trailing NUL char */
1748 memset(label, 0, sizeof(label));
1749 spin_lock(&mp->m_sb_lock);
1750 strncpy(label, sbp->sb_fname, XFSLABEL_MAX);
1751 spin_unlock(&mp->m_sb_lock);
1753 if (copy_to_user(user_label, label, sizeof(label)))
1761 struct xfs_mount *mp,
1762 char __user *newlabel)
1764 struct xfs_sb *sbp = &mp->m_sb;
1765 char label[XFSLABEL_MAX + 1];
1769 if (!capable(CAP_SYS_ADMIN))
1772 * The generic ioctl allows up to FSLABEL_MAX chars, but XFS is much
1773 * smaller, at 12 bytes. We copy one more to be sure we find the
1774 * (required) NULL character to test the incoming label length.
1775 * NB: The on disk label doesn't need to be null terminated.
1777 if (copy_from_user(label, newlabel, XFSLABEL_MAX + 1))
1779 len = strnlen(label, XFSLABEL_MAX + 1);
1780 if (len > sizeof(sbp->sb_fname))
1783 error = mnt_want_write_file(filp);
1787 spin_lock(&mp->m_sb_lock);
1788 memset(sbp->sb_fname, 0, sizeof(sbp->sb_fname));
1789 memcpy(sbp->sb_fname, label, len);
1790 spin_unlock(&mp->m_sb_lock);
1793 * Now we do several things to satisfy userspace.
1794 * In addition to normal logging of the primary superblock, we also
1795 * immediately write these changes to sector zero for the primary, then
1796 * update all backup supers (as xfs_db does for a label change), then
1797 * invalidate the block device page cache. This is so that any prior
1798 * buffered reads from userspace (i.e. from blkid) are invalidated,
1799 * and userspace will see the newly-written label.
1801 error = xfs_sync_sb_buf(mp);
1805 * growfs also updates backup supers so lock against that.
1807 mutex_lock(&mp->m_growlock);
1808 error = xfs_update_secondary_sbs(mp);
1809 mutex_unlock(&mp->m_growlock);
1811 invalidate_bdev(mp->m_ddev_targp->bt_bdev);
1814 mnt_drop_write_file(filp);
1819 xfs_fs_eofblocks_from_user(
1820 struct xfs_fs_eofblocks *src,
1821 struct xfs_icwalk *dst)
1823 if (src->eof_version != XFS_EOFBLOCKS_VERSION)
1826 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID)
1829 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) ||
1830 memchr_inv(src->pad64, 0, sizeof(src->pad64)))
1834 if (src->eof_flags & XFS_EOF_FLAGS_SYNC)
1835 dst->icw_flags |= XFS_ICWALK_FLAG_SYNC;
1836 if (src->eof_flags & XFS_EOF_FLAGS_UID)
1837 dst->icw_flags |= XFS_ICWALK_FLAG_UID;
1838 if (src->eof_flags & XFS_EOF_FLAGS_GID)
1839 dst->icw_flags |= XFS_ICWALK_FLAG_GID;
1840 if (src->eof_flags & XFS_EOF_FLAGS_PRID)
1841 dst->icw_flags |= XFS_ICWALK_FLAG_PRID;
1842 if (src->eof_flags & XFS_EOF_FLAGS_MINFILESIZE)
1843 dst->icw_flags |= XFS_ICWALK_FLAG_MINFILESIZE;
1845 dst->icw_prid = src->eof_prid;
1846 dst->icw_min_file_size = src->eof_min_file_size;
1848 dst->icw_uid = INVALID_UID;
1849 if (src->eof_flags & XFS_EOF_FLAGS_UID) {
1850 dst->icw_uid = make_kuid(current_user_ns(), src->eof_uid);
1851 if (!uid_valid(dst->icw_uid))
1855 dst->icw_gid = INVALID_GID;
1856 if (src->eof_flags & XFS_EOF_FLAGS_GID) {
1857 dst->icw_gid = make_kgid(current_user_ns(), src->eof_gid);
1858 if (!gid_valid(dst->icw_gid))
1865 * These long-unused ioctls were removed from the official ioctl API in 5.17,
1866 * but retain these definitions so that we can log warnings about them.
1868 #define XFS_IOC_ALLOCSP _IOW ('X', 10, struct xfs_flock64)
1869 #define XFS_IOC_FREESP _IOW ('X', 11, struct xfs_flock64)
1870 #define XFS_IOC_ALLOCSP64 _IOW ('X', 36, struct xfs_flock64)
1871 #define XFS_IOC_FREESP64 _IOW ('X', 37, struct xfs_flock64)
1874 * Note: some of the ioctl's return positive numbers as a
1875 * byte count indicating success, such as readlink_by_handle.
1876 * So we don't "sign flip" like most other routines. This means
1877 * true errors need to be returned as a negative value.
1885 struct inode *inode = file_inode(filp);
1886 struct xfs_inode *ip = XFS_I(inode);
1887 struct xfs_mount *mp = ip->i_mount;
1888 void __user *arg = (void __user *)p;
1891 trace_xfs_file_ioctl(ip);
1895 return xfs_ioc_trim(mp, arg);
1896 case FS_IOC_GETFSLABEL:
1897 return xfs_ioc_getlabel(mp, arg);
1898 case FS_IOC_SETFSLABEL:
1899 return xfs_ioc_setlabel(filp, mp, arg);
1900 case XFS_IOC_ALLOCSP:
1901 case XFS_IOC_FREESP:
1902 case XFS_IOC_ALLOCSP64:
1903 case XFS_IOC_FREESP64:
1905 "%s should use fallocate; XFS_IOC_{ALLOC,FREE}SP ioctl unsupported",
1908 case XFS_IOC_DIOINFO: {
1909 struct xfs_buftarg *target = xfs_inode_buftarg(ip);
1912 da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
1913 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1915 if (copy_to_user(arg, &da, sizeof(da)))
1920 case XFS_IOC_FSBULKSTAT_SINGLE:
1921 case XFS_IOC_FSBULKSTAT:
1922 case XFS_IOC_FSINUMBERS:
1923 return xfs_ioc_fsbulkstat(filp, cmd, arg);
1925 case XFS_IOC_BULKSTAT:
1926 return xfs_ioc_bulkstat(filp, cmd, arg);
1927 case XFS_IOC_INUMBERS:
1928 return xfs_ioc_inumbers(mp, cmd, arg);
1930 case XFS_IOC_FSGEOMETRY_V1:
1931 return xfs_ioc_fsgeometry(mp, arg, 3);
1932 case XFS_IOC_FSGEOMETRY_V4:
1933 return xfs_ioc_fsgeometry(mp, arg, 4);
1934 case XFS_IOC_FSGEOMETRY:
1935 return xfs_ioc_fsgeometry(mp, arg, 5);
1937 case XFS_IOC_AG_GEOMETRY:
1938 return xfs_ioc_ag_geometry(mp, arg);
1940 case XFS_IOC_GETVERSION:
1941 return put_user(inode->i_generation, (int __user *)arg);
1943 case XFS_IOC_FSGETXATTRA:
1944 return xfs_ioc_fsgetxattra(ip, arg);
1946 case XFS_IOC_GETBMAP:
1947 case XFS_IOC_GETBMAPA:
1948 case XFS_IOC_GETBMAPX:
1949 return xfs_ioc_getbmap(filp, cmd, arg);
1951 case FS_IOC_GETFSMAP:
1952 return xfs_ioc_getfsmap(ip, arg);
1954 case XFS_IOC_SCRUB_METADATA:
1955 return xfs_ioc_scrub_metadata(filp, arg);
1957 case XFS_IOC_FD_TO_HANDLE:
1958 case XFS_IOC_PATH_TO_HANDLE:
1959 case XFS_IOC_PATH_TO_FSHANDLE: {
1960 xfs_fsop_handlereq_t hreq;
1962 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1964 return xfs_find_handle(cmd, &hreq);
1966 case XFS_IOC_OPEN_BY_HANDLE: {
1967 xfs_fsop_handlereq_t hreq;
1969 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1971 return xfs_open_by_handle(filp, &hreq);
1974 case XFS_IOC_READLINK_BY_HANDLE: {
1975 xfs_fsop_handlereq_t hreq;
1977 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1979 return xfs_readlink_by_handle(filp, &hreq);
1981 case XFS_IOC_ATTRLIST_BY_HANDLE:
1982 return xfs_attrlist_by_handle(filp, arg);
1984 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1985 return xfs_attrmulti_by_handle(filp, arg);
1987 case XFS_IOC_SWAPEXT: {
1988 struct xfs_swapext sxp;
1990 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1992 error = mnt_want_write_file(filp);
1995 error = xfs_ioc_swapext(&sxp);
1996 mnt_drop_write_file(filp);
2000 case XFS_IOC_FSCOUNTS: {
2001 xfs_fsop_counts_t out;
2003 xfs_fs_counts(mp, &out);
2005 if (copy_to_user(arg, &out, sizeof(out)))
2010 case XFS_IOC_SET_RESBLKS: {
2011 xfs_fsop_resblks_t inout;
2014 if (!capable(CAP_SYS_ADMIN))
2017 if (xfs_is_readonly(mp))
2020 if (copy_from_user(&inout, arg, sizeof(inout)))
2023 error = mnt_want_write_file(filp);
2027 /* input parameter is passed in resblks field of structure */
2029 error = xfs_reserve_blocks(mp, &in, &inout);
2030 mnt_drop_write_file(filp);
2034 if (copy_to_user(arg, &inout, sizeof(inout)))
2039 case XFS_IOC_GET_RESBLKS: {
2040 xfs_fsop_resblks_t out;
2042 if (!capable(CAP_SYS_ADMIN))
2045 error = xfs_reserve_blocks(mp, NULL, &out);
2049 if (copy_to_user(arg, &out, sizeof(out)))
2055 case XFS_IOC_FSGROWFSDATA: {
2056 struct xfs_growfs_data in;
2058 if (copy_from_user(&in, arg, sizeof(in)))
2061 error = mnt_want_write_file(filp);
2064 error = xfs_growfs_data(mp, &in);
2065 mnt_drop_write_file(filp);
2069 case XFS_IOC_FSGROWFSLOG: {
2070 struct xfs_growfs_log in;
2072 if (copy_from_user(&in, arg, sizeof(in)))
2075 error = mnt_want_write_file(filp);
2078 error = xfs_growfs_log(mp, &in);
2079 mnt_drop_write_file(filp);
2083 case XFS_IOC_FSGROWFSRT: {
2086 if (copy_from_user(&in, arg, sizeof(in)))
2089 error = mnt_want_write_file(filp);
2092 error = xfs_growfs_rt(mp, &in);
2093 mnt_drop_write_file(filp);
2097 case XFS_IOC_GOINGDOWN: {
2100 if (!capable(CAP_SYS_ADMIN))
2103 if (get_user(in, (uint32_t __user *)arg))
2106 return xfs_fs_goingdown(mp, in);
2109 case XFS_IOC_ERROR_INJECTION: {
2110 xfs_error_injection_t in;
2112 if (!capable(CAP_SYS_ADMIN))
2115 if (copy_from_user(&in, arg, sizeof(in)))
2118 return xfs_errortag_add(mp, in.errtag);
2121 case XFS_IOC_ERROR_CLEARALL:
2122 if (!capable(CAP_SYS_ADMIN))
2125 return xfs_errortag_clearall(mp);
2127 case XFS_IOC_FREE_EOFBLOCKS: {
2128 struct xfs_fs_eofblocks eofb;
2129 struct xfs_icwalk icw;
2131 if (!capable(CAP_SYS_ADMIN))
2134 if (xfs_is_readonly(mp))
2137 if (copy_from_user(&eofb, arg, sizeof(eofb)))
2140 error = xfs_fs_eofblocks_from_user(&eofb, &icw);
2144 trace_xfs_ioc_free_eofblocks(mp, &icw, _RET_IP_);
2146 sb_start_write(mp->m_super);
2147 error = xfs_blockgc_free_space(mp, &icw);
2148 sb_end_write(mp->m_super);