/* Write information header to quota file */ static int v2_write_file_info(struct super_block *sb, int type) { struct v2_disk_dqinfo dinfo; struct mem_dqinfo *info = sb_dqinfo(sb, type); struct qtree_mem_dqinfo *qinfo = info->dqi_priv; ssize_t size; spin_lock(&dq_data_lock); info->dqi_flags &= ~DQF_INFO_DIRTY; dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace); dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace); dinfo.dqi_flags = cpu_to_le32(info->dqi_flags & DQF_MASK); spin_unlock(&dq_data_lock); dinfo.dqi_blocks = cpu_to_le32(qinfo->dqi_blocks); dinfo.dqi_free_blk = cpu_to_le32(qinfo->dqi_free_blk); dinfo.dqi_free_entry = cpu_to_le32(qinfo->dqi_free_entry); size = sb->s_op->quota_write(sb, type, (char *)&dinfo, sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF); if (size != sizeof(struct v2_disk_dqinfo)) { printk(KERN_WARNING "Can't write info structure on device %s.\n", sb->s_id); return -1; } return 0; }
/* Write information header to quota file */ static int v2_write_file_info(struct super_block *sb, int type) { struct v2_disk_dqinfo dinfo; struct mem_dqinfo *info = sb_dqinfo(sb, type); struct qtree_mem_dqinfo *qinfo = info->dqi_priv; ssize_t size; spin_lock(&dq_data_lock); info->dqi_flags &= ~DQF_INFO_DIRTY; dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace); dinfo.dqi_igrace = cpu_to_le32(info->dqi_igrace); /* No flags currently supported */ dinfo.dqi_flags = cpu_to_le32(0); spin_unlock(&dq_data_lock); dinfo.dqi_blocks = cpu_to_le32(qinfo->dqi_blocks); dinfo.dqi_free_blk = cpu_to_le32(qinfo->dqi_free_blk); dinfo.dqi_free_entry = cpu_to_le32(qinfo->dqi_free_entry); size = sb->s_op->quota_write(sb, type, (char *)&dinfo, sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF); if (size != sizeof(struct v2_disk_dqinfo)) { quota_error(sb, "Can't write info structure"); return -1; } return 0; }
/* Read information header from quota file */ static int v2_read_file_info(struct super_block *sb, int type) { struct v2_disk_dqinfo dinfo; struct v2_disk_dqheader dqhead; struct mem_dqinfo *info = sb_dqinfo(sb, type); struct qtree_mem_dqinfo *qinfo; ssize_t size; unsigned int version; if (!v2_read_header(sb, type, &dqhead)) return -1; version = le32_to_cpu(dqhead.dqh_version); if ((info->dqi_fmt_id == QFMT_VFS_V0 && version != 0) || (info->dqi_fmt_id == QFMT_VFS_V1 && version != 1)) return -1; size = sb->s_op->quota_read(sb, type, (char *)&dinfo, sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF); if (size != sizeof(struct v2_disk_dqinfo)) { printk(KERN_WARNING "quota_v2: Can't read info structure on device %s.\n", sb->s_id); return -1; } info->dqi_priv = kmalloc(sizeof(struct qtree_mem_dqinfo), GFP_NOFS); if (!info->dqi_priv) { printk(KERN_WARNING "Not enough memory for quota information structure.\n"); return -1; } qinfo = info->dqi_priv; if (version == 0) { /* limits are stored as unsigned 32-bit data */ info->dqi_maxblimit = 0xffffffff; info->dqi_maxilimit = 0xffffffff; } else { /* used space is stored as unsigned 64-bit value */ info->dqi_maxblimit = 0xffffffffffffffffULL; /* 2^64-1 */ info->dqi_maxilimit = 0xffffffffffffffffULL; } info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace); info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace); info->dqi_flags = le32_to_cpu(dinfo.dqi_flags); qinfo->dqi_sb = sb; qinfo->dqi_type = type; qinfo->dqi_blocks = le32_to_cpu(dinfo.dqi_blocks); qinfo->dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk); qinfo->dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry); qinfo->dqi_blocksize_bits = V2_DQBLKSIZE_BITS; qinfo->dqi_usable_bs = 1 << V2_DQBLKSIZE_BITS; qinfo->dqi_qtree_depth = qtree_depth(qinfo); if (version == 0) { qinfo->dqi_entry_size = sizeof(struct v2r0_disk_dqblk); qinfo->dqi_ops = &v2r0_qtree_ops; } else { qinfo->dqi_entry_size = sizeof(struct v2r1_disk_dqblk); qinfo->dqi_ops = &v2r1_qtree_ops; } return 0; }
static int v2r1_is_id(void *dp, struct dquot *dquot) { struct v2r1_disk_dqblk *d = dp; struct qtree_mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv; if (qtree_entry_unused(info, dp)) return 0; return le32_to_cpu(d->dqb_id) == dquot->dq_id; }
static int v2r1_is_id(void *dp, struct dquot *dquot) { struct v2r1_disk_dqblk *d = dp; struct qtree_mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv; if (qtree_entry_unused(info, dp)) return 0; return qid_eq(make_kqid(&init_user_ns, dquot->dq_id.type, le32_to_cpu(d->dqb_id)), dquot->dq_id); }
static void v2r1_mem2diskdqb(void *dp, struct dquot *dquot) { struct v2r1_disk_dqblk *d = dp; struct mem_dqblk *m = &dquot->dq_dqb; struct qtree_mem_dqinfo *info = sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv; d->dqb_ihardlimit = cpu_to_le64(m->dqb_ihardlimit); d->dqb_isoftlimit = cpu_to_le64(m->dqb_isoftlimit); d->dqb_curinodes = cpu_to_le64(m->dqb_curinodes); d->dqb_itime = cpu_to_le64(m->dqb_itime); d->dqb_bhardlimit = cpu_to_le64(v2_stoqb(m->dqb_bhardlimit)); d->dqb_bsoftlimit = cpu_to_le64(v2_stoqb(m->dqb_bsoftlimit)); d->dqb_curspace = cpu_to_le64(m->dqb_curspace); d->dqb_btime = cpu_to_le64(m->dqb_btime); d->dqb_id = cpu_to_le32(dquot->dq_id); if (qtree_entry_unused(info, dp)) d->dqb_itime = cpu_to_le64(1); }
static int v2_free_file_info(struct super_block *sb, int type) { kfree(sb_dqinfo(sb, type)->dqi_priv); return 0; }
static int v2_release_dquot(struct dquot *dquot) { return qtree_release_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv, dquot); }
static int v2_write_dquot(struct dquot *dquot) { return qtree_write_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot); }
/* Read information header from quota file */ static int v2_read_file_info(struct super_block *sb, int type) { struct v2_disk_dqinfo dinfo; struct v2_disk_dqheader dqhead; struct mem_dqinfo *info = sb_dqinfo(sb, type); struct qtree_mem_dqinfo *qinfo; ssize_t size; unsigned int version; if (!v2_read_header(sb, type, &dqhead)) return -1; version = le32_to_cpu(dqhead.dqh_version); if ((info->dqi_fmt_id == QFMT_VFS_V0 && version != 0) || (info->dqi_fmt_id == QFMT_VFS_V1 && version != 1)) return -1; size = sb->s_op->quota_read(sb, type, (char *)&dinfo, sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF); if (size != sizeof(struct v2_disk_dqinfo)) { quota_error(sb, "Can't read info structure"); return -1; } info->dqi_priv = kmalloc(sizeof(struct qtree_mem_dqinfo), GFP_NOFS); if (!info->dqi_priv) { printk(KERN_WARNING "Not enough memory for quota information structure.\n"); return -ENOMEM; } qinfo = info->dqi_priv; if (version == 0) { /* limits are stored as unsigned 32-bit data */ info->dqi_max_spc_limit = 0xffffffffLL << QUOTABLOCK_BITS; info->dqi_max_ino_limit = 0xffffffff; } else { /* * Used space is stored as unsigned 64-bit value in bytes but * quota core supports only signed 64-bit values so use that * as a limit */ info->dqi_max_spc_limit = 0x7fffffffffffffffLL; /* 2^63-1 */ info->dqi_max_ino_limit = 0x7fffffffffffffffLL; } info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace); info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace); /* No flags currently supported */ info->dqi_flags = 0; qinfo->dqi_sb = sb; qinfo->dqi_type = type; qinfo->dqi_blocks = le32_to_cpu(dinfo.dqi_blocks); qinfo->dqi_free_blk = le32_to_cpu(dinfo.dqi_free_blk); qinfo->dqi_free_entry = le32_to_cpu(dinfo.dqi_free_entry); qinfo->dqi_blocksize_bits = V2_DQBLKSIZE_BITS; qinfo->dqi_usable_bs = 1 << V2_DQBLKSIZE_BITS; qinfo->dqi_qtree_depth = qtree_depth(qinfo); if (version == 0) { qinfo->dqi_entry_size = sizeof(struct v2r0_disk_dqblk); qinfo->dqi_ops = &v2r0_qtree_ops; } else { qinfo->dqi_entry_size = sizeof(struct v2r1_disk_dqblk); qinfo->dqi_ops = &v2r1_qtree_ops; } return 0; }