| 1 | /* |
| 2 | * Copyright (c) 1991 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * %sccs.include.redist.c% |
| 6 | * |
| 7 | * @(#)ufs_vfsops.c 7.58 (Berkeley) %G% |
| 8 | */ |
| 9 | |
| 10 | #include <sys/param.h> |
| 11 | #include <sys/mount.h> |
| 12 | #include <sys/proc.h> |
| 13 | #include <sys/buf.h> |
| 14 | #include <sys/vnode.h> |
| 15 | #include <sys/specdev.h> |
| 16 | #include "ioctl.h" |
| 17 | #include "disklabel.h" |
| 18 | #include "stat.h" |
| 19 | |
| 20 | #include <ufs/ufs/quota.h> |
| 21 | #include <ufs/ufs/inode.h> |
| 22 | #include <ufs/ufs/ufsmount.h> |
| 23 | #include <ufs/ufs/ufs_extern.h> |
| 24 | |
| 25 | /* |
| 26 | * Flag to permit forcible unmounting. |
| 27 | */ |
| 28 | int doforce = 1; |
| 29 | |
| 30 | /* |
| 31 | * Make a filesystem operational. |
| 32 | * Nothing to do at the moment. |
| 33 | */ |
| 34 | /* ARGSUSED */ |
| 35 | int |
| 36 | ufs_start(mp, flags, p) |
| 37 | struct mount *mp; |
| 38 | int flags; |
| 39 | struct proc *p; |
| 40 | { |
| 41 | |
| 42 | return (0); |
| 43 | } |
| 44 | |
| 45 | /* |
| 46 | error = closei(dev, IFBLK, fs->fs_ronly? FREAD : FREAD|FWRITE); |
| 47 | irele(ip); |
| 48 | return (error); |
| 49 | } |
| 50 | |
| 51 | /* |
| 52 | * Do operations associated with quotas |
| 53 | */ |
| 54 | int |
| 55 | ufs_quotactl(mp, cmds, uid, arg, p) |
| 56 | struct mount *mp; |
| 57 | int cmds; |
| 58 | u_int uid; |
| 59 | caddr_t arg; |
| 60 | struct proc *p; |
| 61 | { |
| 62 | int cmd, type, error; |
| 63 | |
| 64 | #ifndef QUOTA |
| 65 | return (EOPNOTSUPP); |
| 66 | #else |
| 67 | if (uid == -1) |
| 68 | uid = p->p_cred->p_ruid; |
| 69 | cmd = cmds >> SUBCMDSHIFT; |
| 70 | |
| 71 | switch (cmd) { |
| 72 | case Q_GETQUOTA: |
| 73 | case Q_SYNC: |
| 74 | if (uid == p->p_cred->p_ruid) |
| 75 | break; |
| 76 | /* fall through */ |
| 77 | default: |
| 78 | if (error = suser(p->p_ucred, &p->p_acflag)) |
| 79 | return (error); |
| 80 | } |
| 81 | |
| 82 | type = cmd & SUBCMDMASK; |
| 83 | if ((u_int)type >= MAXQUOTAS) |
| 84 | return (EINVAL); |
| 85 | |
| 86 | switch (cmd) { |
| 87 | |
| 88 | case Q_QUOTAON: |
| 89 | return (quotaon(p, mp, type, arg)); |
| 90 | |
| 91 | case Q_QUOTAOFF: |
| 92 | if (vfs_busy(mp)) |
| 93 | return (0); |
| 94 | error = quotaoff(p, mp, type); |
| 95 | vfs_unbusy(mp); |
| 96 | return (error); |
| 97 | |
| 98 | case Q_SETQUOTA: |
| 99 | return (setquota(mp, uid, type, arg)); |
| 100 | |
| 101 | case Q_SETUSE: |
| 102 | return (setuse(mp, uid, type, arg)); |
| 103 | |
| 104 | case Q_GETQUOTA: |
| 105 | return (getquota(mp, uid, type, arg)); |
| 106 | |
| 107 | case Q_SYNC: |
| 108 | if (vfs_busy(mp)) |
| 109 | return (0); |
| 110 | error = qsync(mp); |
| 111 | vfs_unbusy(mp); |
| 112 | return (error); |
| 113 | |
| 114 | default: |
| 115 | return (EINVAL); |
| 116 | } |
| 117 | /* NOTREACHED */ |
| 118 | #endif |
| 119 | } |
| 120 | |
| 121 | int syncprt = 0; |
| 122 | |
| 123 | /* |
| 124 | * Print out statistics on the current allocation of the buffer pool. |
| 125 | * Can be enabled to print out on every ``sync'' by setting "syncprt" |
| 126 | * above. |
| 127 | */ |
| 128 | void |
| 129 | ufs_bufstats() |
| 130 | { |
| 131 | int s, i, j, count; |
| 132 | register struct buf *bp, *dp; |
| 133 | int counts[MAXBSIZE/CLBYTES+1]; |
| 134 | static char *bname[BQUEUES] = { "LOCKED", "LRU", "AGE", "EMPTY" }; |
| 135 | |
| 136 | for (bp = bfreelist, i = 0; bp < &bfreelist[BQUEUES]; bp++, i++) { |
| 137 | count = 0; |
| 138 | for (j = 0; j <= MAXBSIZE/CLBYTES; j++) |
| 139 | counts[j] = 0; |
| 140 | s = splbio(); |
| 141 | for (dp = bp->av_forw; dp != bp; dp = dp->av_forw) { |
| 142 | counts[dp->b_bufsize/CLBYTES]++; |
| 143 | count++; |
| 144 | } |
| 145 | splx(s); |
| 146 | printf("%s: total-%d", bname[i], count); |
| 147 | for (j = 0; j <= MAXBSIZE/CLBYTES; j++) |
| 148 | if (counts[j] != 0) |
| 149 | printf(", %d-%d", j * CLBYTES, counts[j]); |
| 150 | printf("\n"); |
| 151 | } |
| 152 | } |