Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (C) 2017 Oracle.  All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Author: Darrick J. Wong <darrick.wong@oracle.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include "xfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include "xfs_fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include "xfs_shared.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include "xfs_format.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include "xfs_trans_resv.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include "xfs_mount.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include "xfs_log_format.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include "xfs_trans.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include "xfs_rtalloc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include "xfs_inode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include "xfs_bmap.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include "scrub/scrub.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include "scrub/common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) /* Set us up with the realtime metadata locked. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) xchk_setup_rt(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	struct xfs_scrub	*sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	struct xfs_inode	*ip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	int			error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	error = xchk_setup_fs(sc, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	sc->ip = sc->mp->m_rbmip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	xfs_ilock(sc->ip, sc->ilock_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) /* Realtime bitmap. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) /* Scrub a free extent record from the realtime bitmap. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) STATIC int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) xchk_rtbitmap_rec(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	struct xfs_trans	*tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	struct xfs_rtalloc_rec	*rec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	void			*priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct xfs_scrub	*sc = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	xfs_rtblock_t		startblock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	xfs_rtblock_t		blockcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	startblock = rec->ar_startext * tp->t_mountp->m_sb.sb_rextsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	blockcount = rec->ar_extcount * tp->t_mountp->m_sb.sb_rextsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	if (startblock + blockcount <= startblock ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	    !xfs_verify_rtbno(sc->mp, startblock) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	    !xfs_verify_rtbno(sc->mp, startblock + blockcount - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) /* Make sure the entire rtbitmap file is mapped with written extents. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) STATIC int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) xchk_rtbitmap_check_extents(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	struct xfs_scrub	*sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	struct xfs_mount	*mp = sc->mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	struct xfs_bmbt_irec	map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	xfs_rtblock_t		off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	int			nmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	int			error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	for (off = 0; off < mp->m_sb.sb_rbmblocks;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		if (xchk_should_terminate(sc, &error) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		    (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		/* Make sure we have a written extent. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		nmap = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		error = xfs_bmapi_read(mp->m_rbmip, off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 				mp->m_sb.sb_rbmblocks - off, &map, &nmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 				XFS_DATA_FORK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, off, &error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		if (nmap != 1 || !xfs_bmap_is_written_extent(&map)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		off += map.br_blockcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) /* Scrub the realtime bitmap. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) xchk_rtbitmap(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	struct xfs_scrub	*sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	int			error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	/* Is the size of the rtbitmap correct? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	if (sc->mp->m_rbmip->i_d.di_size !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	    XFS_FSB_TO_B(sc->mp, sc->mp->m_sb.sb_rbmblocks)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		xchk_ino_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	/* Invoke the fork scrubber. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	error = xchk_metadata_inode_forks(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	error = xchk_rtbitmap_check_extents(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	error = xfs_rtalloc_query_all(sc->tp, xchk_rtbitmap_rec, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, 0, &error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /* Scrub the realtime summary. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) xchk_rtsummary(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	struct xfs_scrub	*sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	struct xfs_inode	*rsumip = sc->mp->m_rsumip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	struct xfs_inode	*old_ip = sc->ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	uint			old_ilock_flags = sc->ilock_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	int			error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	 * We ILOCK'd the rt bitmap ip in the setup routine, now lock the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	 * rt summary ip in compliance with the rt inode locking rules.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	 * Since we switch sc->ip to rsumip we have to save the old ilock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	 * flags so that we don't mix up the inode state that @sc tracks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	sc->ip = rsumip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTSUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	xfs_ilock(sc->ip, sc->ilock_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	/* Invoke the fork scrubber. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	error = xchk_metadata_inode_forks(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	/* XXX: implement this some day */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	xchk_set_incomplete(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	/* Switch back to the rtbitmap inode and lock flags. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	xfs_iunlock(sc->ip, sc->ilock_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	sc->ilock_flags = old_ilock_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	sc->ip = old_ip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /* xref check that the extent is not free in the rtbitmap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) xchk_xref_is_used_rt_space(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	struct xfs_scrub	*sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	xfs_rtblock_t		fsbno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	xfs_extlen_t		len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	xfs_rtblock_t		startext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	xfs_rtblock_t		endext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	xfs_rtblock_t		extcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	bool			is_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	int			error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	if (xchk_skip_xref(sc->sm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	startext = fsbno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	endext = fsbno + len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	do_div(startext, sc->mp->m_sb.sb_rextsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	do_div(endext, sc->mp->m_sb.sb_rextsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	extcount = endext - startext + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	xfs_ilock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	error = xfs_rtalloc_extent_is_free(sc->mp, sc->tp, startext, extcount,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 			&is_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	if (!xchk_should_check_xref(sc, &error, NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	if (is_free)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		xchk_ino_xref_set_corrupt(sc, sc->mp->m_rbmip->i_ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	xfs_iunlock(sc->mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }