netbsd32_compat_20.c revision 1.10
1 /* $NetBSD: netbsd32_compat_20.c,v 1.10 2007/03/18 21:38:33 dsl Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_20.c,v 1.10 2007/03/18 21:38:33 dsl Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/mount.h> 38 #include <sys/stat.h> 39 #include <sys/time.h> 40 #include <sys/ktrace.h> 41 #include <sys/vnode.h> 42 #include <sys/file.h> 43 #include <sys/filedesc.h> 44 #include <sys/namei.h> 45 #include <sys/syscallargs.h> 46 #include <sys/proc.h> 47 #include <sys/dirent.h> 48 49 #include <compat/netbsd32/netbsd32.h> 50 #include <compat/netbsd32/netbsd32_syscallargs.h> 51 #include <compat/netbsd32/netbsd32_conv.h> 52 53 static inline void compat_20_netbsd32_from_statvfs(struct statvfs *, 54 struct netbsd32_statfs *); 55 56 static inline void 57 compat_20_netbsd32_from_statvfs(sbp, sb32p) 58 struct statvfs *sbp; 59 struct netbsd32_statfs *sb32p; 60 { 61 sb32p->f_flags = sbp->f_flag; 62 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 63 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 64 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 65 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 66 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 67 sb32p->f_files = (netbsd32_long)sbp->f_files; 68 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 69 sb32p->f_fsid = sbp->f_fsidx; 70 sb32p->f_owner = sbp->f_owner; 71 sb32p->f_spare[0] = 0; 72 sb32p->f_spare[1] = 0; 73 sb32p->f_spare[2] = 0; 74 sb32p->f_spare[3] = 0; 75 #if 1 76 /* May as well do the whole batch in one go */ 77 memcpy(sb32p->f_fstypename, sbp->f_fstypename, MFSNAMELEN+MNAMELEN+MNAMELEN); 78 #else 79 /* If we want to be careful */ 80 memcpy(sb32p->f_fstypename, sbp->f_fstypename, MFSNAMELEN); 81 memcpy(sb32p->f_mntonname, sbp->f_mntonname, MNAMELEN); 82 memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, MNAMELEN); 83 #endif 84 } 85 86 int 87 compat_20_netbsd32_getfsstat(l, v, retval) 88 struct lwp *l; 89 void *v; 90 register_t *retval; 91 { 92 struct compat_20_netbsd32_getfsstat_args /* { 93 syscallarg(netbsd32_statfsp_t) buf; 94 syscallarg(netbsd32_long) bufsize; 95 syscallarg(int) flags; 96 } */ *uap = v; 97 struct mount *mp, *nmp; 98 struct statvfs *sp; 99 struct netbsd32_statfs sb32; 100 void *sfsp; 101 long count, maxcount, error; 102 103 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 104 sfsp = SCARG_P32(uap, buf); 105 simple_lock(&mountlist_slock); 106 count = 0; 107 for (mp = mountlist.cqh_first; mp != (void *)&mountlist; mp = nmp) { 108 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock)) { 109 nmp = mp->mnt_list.cqe_next; 110 continue; 111 } 112 if (sfsp && count < maxcount) { 113 sp = &mp->mnt_stat; 114 /* 115 * If MNT_NOWAIT or MNT_LAZY is specified, do not 116 * refresh the fsstat cache. MNT_WAIT or MNT_LAXY 117 * overrides MNT_NOWAIT. 118 */ 119 if (SCARG(uap, flags) != MNT_NOWAIT && 120 SCARG(uap, flags) != MNT_LAZY && 121 (SCARG(uap, flags) == MNT_WAIT || 122 SCARG(uap, flags) == 0) && 123 (error = VFS_STATVFS(mp, sp, l)) != 0) { 124 simple_lock(&mountlist_slock); 125 nmp = mp->mnt_list.cqe_next; 126 vfs_unbusy(mp); 127 continue; 128 } 129 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 130 compat_20_netbsd32_from_statvfs(sp, &sb32); 131 error = copyout(&sb32, sfsp, sizeof(sb32)); 132 if (error) { 133 vfs_unbusy(mp); 134 return (error); 135 } 136 sfsp = (char *)sfsp + sizeof(sb32); 137 } 138 count++; 139 simple_lock(&mountlist_slock); 140 nmp = mp->mnt_list.cqe_next; 141 vfs_unbusy(mp); 142 } 143 simple_unlock(&mountlist_slock); 144 if (sfsp && count > maxcount) 145 *retval = maxcount; 146 else 147 *retval = count; 148 return (0); 149 } 150 151 int 152 compat_20_netbsd32_statfs(l, v, retval) 153 struct lwp *l; 154 void *v; 155 register_t *retval; 156 { 157 struct compat_20_netbsd32_statfs_args /* { 158 syscallarg(const netbsd32_charp) path; 159 syscallarg(netbsd32_statfsp_t) buf; 160 } */ *uap = v; 161 struct mount *mp; 162 struct statvfs *sp; 163 struct netbsd32_statfs s32; 164 int error; 165 struct nameidata nd; 166 167 NDINIT(&nd, LOOKUP, FOLLOW, UIO_USERSPACE, SCARG_P32(uap, path), l); 168 if ((error = namei(&nd)) != 0) 169 return (error); 170 mp = nd.ni_vp->v_mount; 171 sp = &mp->mnt_stat; 172 vrele(nd.ni_vp); 173 if ((error = VFS_STATVFS(mp, sp, l)) != 0) 174 return (error); 175 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 176 compat_20_netbsd32_from_statvfs(sp, &s32); 177 return copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 178 } 179 180 int 181 compat_20_netbsd32_fstatfs(l, v, retval) 182 struct lwp *l; 183 void *v; 184 register_t *retval; 185 { 186 struct compat_20_netbsd32_fstatfs_args /* { 187 syscallarg(int) fd; 188 syscallarg(netbsd32_statfsp_t) buf; 189 } */ *uap = v; 190 struct file *fp; 191 struct mount *mp; 192 struct statvfs *sp; 193 struct netbsd32_statfs s32; 194 int error; 195 struct proc *p = l->l_proc; 196 197 /* getvnode() will use the descriptor for us */ 198 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 199 return (error); 200 mp = ((struct vnode *)fp->f_data)->v_mount; 201 sp = &mp->mnt_stat; 202 if ((error = VFS_STATVFS(mp, sp, l)) != 0) 203 goto out; 204 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 205 compat_20_netbsd32_from_statvfs(sp, &s32); 206 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 207 out: 208 FILE_UNUSE(fp, l); 209 return (error); 210 } 211 212 int 213 compat_20_netbsd32_fhstatfs(l, v, retval) 214 struct lwp *l; 215 void *v; 216 register_t *retval; 217 { 218 struct compat_20_netbsd32_fhstatfs_args /* { 219 syscallarg(const netbsd32_fhandlep_t) fhp; 220 syscallarg(struct statvfs *) buf; 221 } */ *uap = v; 222 struct compat_30_sys_fhstatvfs1_args ua; 223 224 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 225 NETBSD32TOP_UAP(buf, struct statvfs); 226 #ifdef notyet 227 NETBSD32TOP_UAP(flags, int); 228 #endif 229 return (compat_30_sys_fhstatvfs1(l, &ua, retval)); 230 } 231
Indexes created Mon Sep 22 13:09:51 GMT 2025