static void scan_ag( xfs_agnumber_t agno) { xfs_agf_t *agf; xfs_agi_t *agi; push_cur(); set_cur(&typtab[TYP_AGF], XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), XFS_FSS_TO_BB(mp, 1), DB_RING_IGN, NULL); if ((agf = iocur_top->data) == NULL) { dbprintf(_("can't read agf block for ag %u\n"), agno); pop_cur(); return; } push_cur(); set_cur(&typtab[TYP_AGI], XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), XFS_FSS_TO_BB(mp, 1), DB_RING_IGN, NULL); if ((agi = iocur_top->data) == NULL) { dbprintf(_("can't read agi block for ag %u\n"), agno); pop_cur(); pop_cur(); return; } scan_sbtree(agf, be32_to_cpu(agi->agi_root), be32_to_cpu(agi->agi_level), scanfunc_ino, TYP_INOBT); pop_cur(); pop_cur(); }
static int get_sb(xfs_agnumber_t agno, xfs_sb_t *sb) { push_cur(); set_cur(&typtab[TYP_SB], XFS_AG_DADDR(mp, agno, XFS_SB_DADDR), XFS_FSS_TO_BB(mp, 1), DB_RING_IGN, NULL); if (!iocur_top->data) { dbprintf(_("can't read superblock for AG %u\n"), agno); pop_cur(); return 0; } libxfs_sb_from_disk(sb, iocur_top->data); if (sb->sb_magicnum != XFS_SB_MAGIC) { dbprintf(_("bad sb magic # %#x in AG %u\n"), sb->sb_magicnum, agno); return 0; } if (!xfs_sb_good_version(sb)) { dbprintf(_("bad sb version # %#x in AG %u\n"), sb->sb_versionnum, agno); return 0; } if (agno == 0 && sb->sb_inprogress != 0) { dbprintf(_("mkfs not completed successfully\n")); return 0; } return 1; }
static int sb_f( int argc, char **argv) { xfs_agnumber_t agno; char *p; if (argc > 1) { agno = (xfs_agnumber_t)strtoul(argv[1], &p, 0); if (*p != '\0' || agno >= mp->m_sb.sb_agcount) { dbprintf(_("bad allocation group number %s\n"), argv[1]); return 0; } cur_agno = agno; } else if (cur_agno == NULLAGNUMBER) cur_agno = 0; ASSERT(typtab[TYP_SB].typnm == TYP_SB); set_cur(&typtab[TYP_SB], XFS_AG_DADDR(mp, cur_agno, XFS_SB_DADDR), XFS_FSS_TO_BB(mp, 1), DB_RING_ADD, NULL); return 0; }
/* * Mount structure initialization, provides a filled-in xfs_mount_t * such that the numerous XFS_* macros can be used. If dev is zero, * no IO will be performed (no size checks, read root inodes). */ xfs_mount_t * libxfs_mount( xfs_mount_t *mp, xfs_sb_t *sb, dev_t dev, dev_t logdev, dev_t rtdev, int flags) { xfs_daddr_t d; xfs_buf_t *bp; xfs_sb_t *sbp; int error; libxfs_buftarg_init(mp, dev, logdev, rtdev); mp->m_flags = (LIBXFS_MOUNT_32BITINODES|LIBXFS_MOUNT_32BITINOOPT); mp->m_sb = *sb; INIT_RADIX_TREE(&mp->m_perag_tree, GFP_KERNEL); sbp = &(mp->m_sb); xfs_sb_mount_common(mp, sb); xfs_alloc_compute_maxlevels(mp); xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK); xfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK); xfs_ialloc_compute_maxlevels(mp); if (sbp->sb_imax_pct) { /* Make sure the maximum inode count is a multiple of the * units we allocate inodes in. */ mp->m_maxicount = (sbp->sb_dblocks * sbp->sb_imax_pct) / 100; mp->m_maxicount = ((mp->m_maxicount / mp->m_ialloc_blks) * mp->m_ialloc_blks) << sbp->sb_inopblog; } else mp->m_maxicount = 0; mp->m_inode_cluster_size = XFS_INODE_BIG_CLUSTER_SIZE; /* * Set whether we're using stripe alignment. */ if (xfs_sb_version_hasdalign(&mp->m_sb)) { mp->m_dalign = sbp->sb_unit; mp->m_swidth = sbp->sb_width; } /* * Set whether we're using inode alignment. */ if (xfs_sb_version_hasalign(&mp->m_sb) && mp->m_sb.sb_inoalignmt >= XFS_B_TO_FSBT(mp, mp->m_inode_cluster_size)) mp->m_inoalign_mask = mp->m_sb.sb_inoalignmt - 1; else mp->m_inoalign_mask = 0; /* * If we are using stripe alignment, check whether * the stripe unit is a multiple of the inode alignment */ if (mp->m_dalign && mp->m_inoalign_mask && !(mp->m_dalign & mp->m_inoalign_mask)) mp->m_sinoalign = mp->m_dalign; else mp->m_sinoalign = 0; /* * Check that the data (and log if separate) are an ok size. */ d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks); if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) { fprintf(stderr, _("%s: size check failed\n"), progname); if (!(flags & LIBXFS_MOUNT_DEBUGGER)) return NULL; } /* * We automatically convert v1 inodes to v2 inodes now, so if * the NLINK bit is not set we can't operate on the filesystem. */ if (!(sbp->sb_versionnum & XFS_SB_VERSION_NLINKBIT)) { fprintf(stderr, _( "%s: V1 inodes unsupported. Please try an older xfsprogs.\n"), progname); exit(1); } /* Check for supported directory formats */ if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT)) { fprintf(stderr, _( "%s: V1 directories unsupported. Please try an older xfsprogs.\n"), progname); exit(1); } /* check for unsupported other features */ if (!xfs_sb_good_version(sbp)) { fprintf(stderr, _( "%s: Unsupported features detected. Please try a newer xfsprogs.\n"), progname); exit(1); } xfs_da_mount(mp); if (xfs_sb_version_hasattr2(&mp->m_sb)) mp->m_flags |= LIBXFS_MOUNT_ATTR2; /* Initialize the precomputed transaction reservations values */ xfs_trans_init(mp); if (dev == 0) /* maxtrres, we have no device so leave now */ return mp; bp = libxfs_readbuf(mp->m_dev, d - XFS_FSS_TO_BB(mp, 1), XFS_FSS_TO_BB(mp, 1), !(flags & LIBXFS_MOUNT_DEBUGGER), NULL); if (!bp) { fprintf(stderr, _("%s: data size check failed\n"), progname); if (!(flags & LIBXFS_MOUNT_DEBUGGER)) return NULL; } else libxfs_putbuf(bp); if (mp->m_logdev_targp->dev && mp->m_logdev_targp->dev != mp->m_ddev_targp->dev) { d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks); if ( (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks) || (!(bp = libxfs_readbuf(mp->m_logdev_targp, d - XFS_FSB_TO_BB(mp, 1), XFS_FSB_TO_BB(mp, 1), !(flags & LIBXFS_MOUNT_DEBUGGER), NULL))) ) { fprintf(stderr, _("%s: log size checks failed\n"), progname); if (!(flags & LIBXFS_MOUNT_DEBUGGER)) return NULL; } if (bp) libxfs_putbuf(bp); } /* Initialize realtime fields in the mount structure */ if (rtmount_init(mp, flags)) { fprintf(stderr, _("%s: realtime device init failed\n"), progname); return NULL; } error = libxfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi); if (error) { fprintf(stderr, _("%s: perag init failed\n"), progname); exit(1); } return mp; }