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Annotation of src/sys/ufs/ufs/quota2_subr.c, Revision 1.3.2.2

1.3.2.2 ! rmind       1: /* $NetBSD$ */
        !             2: /*-
        !             3:   * Copyright (c) 2010 Manuel Bouyer
        !             4:   * All rights reserved.
        !             5:   * This software is distributed under the following condiions
        !             6:   * compliant with the NetBSD foundation policy.
        !             7:   *
        !             8:   * Redistribution and use in source and binary forms, with or without
        !             9:   * modification, are permitted provided that the following conditions
        !            10:   * are met:
        !            11:   * 1. Redistributions of source code must retain the above copyright
        !            12:   *    notice, this list of conditions and the following disclaimer.
        !            13:   * 2. Redistributions in binary form must reproduce the above copyright
        !            14:   *    notice, this list of conditions and the following disclaimer in the
        !            15:   *    documentation and/or other materials provided with the distribution.
        !            16:   *
        !            17:   * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
        !            18:   * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
        !            19:   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
        !            20:   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
        !            21:   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
        !            22:   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
        !            23:   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
        !            24:   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
        !            25:   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
        !            26:   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
        !            27:   * POSSIBILITY OF SUCH DAMAGE.
        !            28:   */
        !            29:
        !            30: #include <sys/cdefs.h>
        !            31: __KERNEL_RCSID(0, "$NetBSD$");
        !            32:
        !            33: #include <sys/param.h>
        !            34: #include <sys/time.h>
        !            35:
        !            36: #include <ufs/ufs/dinode.h>
        !            37: #include <ufs/ffs/fs.h>
        !            38: #include <ufs/ffs/ffs_extern.h>
        !            39: #include <ufs/ufs/ufs_bswap.h>
        !            40: #include <ufs/ufs/quota2.h>
        !            41:
        !            42: #ifndef _KERNEL
        !            43: #include <string.h>
        !            44: #endif
        !            45:
        !            46: void
        !            47: quota2_addfreeq2e(struct quota2_header *q2h, void *bp, uint64_t baseoff,
        !            48:     uint64_t bsize, int ns)
        !            49: {
        !            50:        uint64_t blkoff = baseoff % bsize;
        !            51:        int i, nq2e;
        !            52:        struct quota2_entry *q2e;
        !            53:
        !            54:        q2e = (void *)((char *)bp + blkoff);
        !            55:        nq2e = (bsize - blkoff) / sizeof(*q2e);
        !            56:        for (i = 0; i < nq2e; i++) {
        !            57:                q2e[i].q2e_next = q2h->q2h_free;
        !            58:                q2h->q2h_free = ufs_rw64(i * sizeof(*q2e) + baseoff, ns);
        !            59:        }
        !            60: }
        !            61:
        !            62: void
        !            63: quota2_create_blk0(uint64_t bsize, void *bp, int q2h_hash_shift, int type,
        !            64:     int ns)
        !            65: {
        !            66:        struct quota2_header *q2h;
        !            67:        const int quota2_hash_size = 1 << q2h_hash_shift;
        !            68:        const int quota2_full_header_size = sizeof(struct quota2_header) +
        !            69:            sizeof(q2h->q2h_entries[0]) * quota2_hash_size;
        !            70:        int i;
        !            71:
        !            72:        memset(bp, 0, bsize);
        !            73:        q2h = bp;
        !            74:        q2h->q2h_magic_number = ufs_rw32(Q2_HEAD_MAGIC, ns);
        !            75:        q2h->q2h_type = type;
        !            76:        q2h->q2h_hash_shift = q2h_hash_shift;
        !            77:        q2h->q2h_hash_size = ufs_rw16(quota2_hash_size, ns);
        !            78:        /* setup defaut entry: unlimited, 7 days grace */
        !            79:        for (i = 0; i < N_QL; i++) {
        !            80:                q2h->q2h_defentry.q2e_val[i].q2v_hardlimit =
        !            81:                    q2h->q2h_defentry.q2e_val[i].q2v_softlimit =
        !            82:                    ufs_rw64(UQUAD_MAX, ns);
        !            83:                q2h->q2h_defentry.q2e_val[i].q2v_grace =
        !            84:                    ufs_rw64(7ULL * 24ULL * 3600ULL, ns);
        !            85:        }
        !            86:
        !            87:        /* first quota entry, after the hash table */
        !            88:        quota2_addfreeq2e(q2h, bp, quota2_full_header_size, bsize, ns);
        !            89: }
        !            90:
        !            91: void
        !            92: quota2_ufs_rwq2v(const struct quota2_val *s, struct quota2_val *d, int needswap)
        !            93: {
        !            94:        d->q2v_hardlimit = ufs_rw64(s->q2v_hardlimit, needswap);
        !            95:        d->q2v_softlimit = ufs_rw64(s->q2v_softlimit, needswap);
        !            96:        d->q2v_cur = ufs_rw64(s->q2v_cur, needswap);
        !            97:        d->q2v_time = ufs_rw64(s->q2v_time, needswap);
        !            98:        d->q2v_grace = ufs_rw64(s->q2v_grace, needswap);
        !            99: }
        !           100:
        !           101: void
        !           102: quota2_ufs_rwq2e(const struct quota2_entry *s, struct quota2_entry *d,
        !           103: int needswap)
        !           104: {
        !           105:        quota2_ufs_rwq2v(&s->q2e_val[QL_BLOCK], &d->q2e_val[QL_BLOCK],
        !           106:            needswap);
        !           107:        quota2_ufs_rwq2v(&s->q2e_val[QL_FILE], &d->q2e_val[QL_FILE],
        !           108:            needswap);
        !           109:        d->q2e_uid = ufs_rw32(s->q2e_uid, needswap);
        !           110: }