/* * Read on-disk structures associated with cylinder groups */ static int ufs_read_cylinder_structures(struct super_block *sb) { struct ufs_sb_info *sbi = UFS_SB(sb); struct ufs_sb_private_info *uspi = sbi->s_uspi; struct ufs_buffer_head * ubh; unsigned char * base, * space; unsigned size, blks, i; UFSD("ENTER\n"); /* * Read cs structures from (usually) first data block * on the device. */ size = uspi->s_cssize; blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; base = space = kmalloc(size, GFP_NOFS); if (!base) goto failed; sbi->s_csp = (struct ufs_csum *)space; for (i = 0; i < blks; i += uspi->s_fpb) { size = uspi->s_bsize; if (i + uspi->s_fpb > blks) size = (blks - i) * uspi->s_fsize; ubh = ubh_bread(sb, uspi->s_csaddr + i, size); if (!ubh) goto failed; ubh_ubhcpymem (space, ubh, size); space += size; ubh_brelse (ubh); ubh = NULL; } /* * Read cylinder group (we read only first fragment from block * at this time) and prepare internal data structures for cg caching. */ if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS))) goto failed; for (i = 0; i < uspi->s_ncg; i++) sbi->s_ucg[i] = NULL; for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { sbi->s_ucpi[i] = NULL; sbi->s_cgno[i] = UFS_CGNO_EMPTY; } for (i = 0; i < uspi->s_ncg; i++) { UFSD("read cg %u\n", i); if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) goto failed; if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) goto failed; ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); } for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS))) goto failed; sbi->s_cgno[i] = UFS_CGNO_EMPTY; } sbi->s_cg_loaded = 0; UFSD("EXIT\n"); return 1; failed: kfree (base); if (sbi->s_ucg) { for (i = 0; i < uspi->s_ncg; i++) if (sbi->s_ucg[i]) brelse (sbi->s_ucg[i]); kfree (sbi->s_ucg); for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) kfree (sbi->s_ucpi[i]); } UFSD("EXIT (FAILED)\n"); return 0; }
/* * Read on-disk structures associated with cylinder groups */ static int ufs_read_cylinder_structures (struct super_block *sb) { struct ufs_sb_info * sbi = UFS_SB(sb); struct ufs_sb_private_info * uspi; struct ufs_super_block *usb; struct ufs_buffer_head * ubh; unsigned char * base, * space; unsigned size, blks, i; unsigned flags = 0; UFSD(("ENTER\n")) uspi = sbi->s_uspi; usb = (struct ufs_super_block *) ((struct ufs_buffer_head *)uspi)->bh[0]->b_data; flags = UFS_SB(sb)->s_flags; /* * Read cs structures from (usually) first data block * on the device. */ size = uspi->s_cssize; blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; base = space = kmalloc(size, GFP_KERNEL); if (!base) goto failed; for (i = 0; i < blks; i += uspi->s_fpb) { size = uspi->s_bsize; if (i + uspi->s_fpb > blks) size = (blks - i) * uspi->s_fsize; if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { ubh = ubh_bread(sb, fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_csaddr) + i, size); if (!ubh) goto failed; ubh_ubhcpymem (space, ubh, size); sbi->s_csp[ufs_fragstoblks(i)]=(struct ufs_csum *)space; } else { ubh = ubh_bread(sb, uspi->s_csaddr + i, size); if (!ubh) goto failed; ubh_ubhcpymem(space, ubh, size); sbi->s_csp[ufs_fragstoblks(i)]=(struct ufs_csum *)space; } space += size; ubh_brelse (ubh); ubh = NULL; } /* * Read cylinder group (we read only first fragment from block * at this time) and prepare internal data structures for cg caching. */ if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL))) goto failed; for (i = 0; i < uspi->s_ncg; i++) sbi->s_ucg[i] = NULL; for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { sbi->s_ucpi[i] = NULL; sbi->s_cgno[i] = UFS_CGNO_EMPTY; } for (i = 0; i < uspi->s_ncg; i++) { UFSD(("read cg %u\n", i)) if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) goto failed; if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) goto failed; #ifdef UFS_SUPER_DEBUG_MORE ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); #endif } for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL))) goto failed; sbi->s_cgno[i] = UFS_CGNO_EMPTY; } sbi->s_cg_loaded = 0; UFSD(("EXIT\n")) return 1; failed: if (base) kfree (base); if (sbi->s_ucg) { for (i = 0; i < uspi->s_ncg; i++) if (sbi->s_ucg[i]) brelse (sbi->s_ucg[i]); kfree (sbi->s_ucg); for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) if (sbi->s_ucpi[i]) kfree (sbi->s_ucpi[i]); } UFSD(("EXIT (FAILED)\n")) return 0; }