netbsd32_compat_20.c revision 1.14
1 /* $NetBSD: netbsd32_compat_20.c,v 1.14 2007/07/18 13:53:34 briggs 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 1.14 2007/07/18 13:53:34 briggs 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 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 78 sizeof(sb32p->f_fstypename) + 79 sizeof(sb32p->f_mntonname) + 80 sizeof(sb32p->f_mntfromname)); 81 #else 82 /* If we want to be careful */ 83 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 84 sizeof(sb32p->f_fstypename)); 85 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 86 sizeof(sb32p->f_mntonname)); 87 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 88 sizeof(sb32p->f_mntfromname)); 89 #endif 90 } 91 92 int 93 compat_20_netbsd32_getfsstat(l, v, retval) 94 struct lwp *l; 95 void *v; 96 register_t *retval; 97 { 98 struct compat_20_netbsd32_getfsstat_args /* { 99 syscallarg(netbsd32_statfsp_t) buf; 100 syscallarg(netbsd32_long) bufsize; 101 syscallarg(int) flags; 102 } */ *uap = v; 103 struct mount *mp, *nmp; 104 struct statvfs *sp; 105 struct netbsd32_statfs sb32; 106 void *sfsp; 107 long count, maxcount, error; 108 109 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 110 sfsp = SCARG_P32(uap, buf); 111 simple_lock(&mountlist_slock); 112 count = 0; 113 for (mp = mountlist.cqh_first; mp != (void *)&mountlist; mp = nmp) { 114 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock)) { 115 nmp = mp->mnt_list.cqe_next; 116 continue; 117 } 118 if (sfsp && count < maxcount) { 119 sp = &mp->mnt_stat; 120 /* 121 * If MNT_NOWAIT or MNT_LAZY is specified, do not 122 * refresh the fsstat cache. MNT_WAIT or MNT_LAZY 123 * overrides MNT_NOWAIT. 124 */ 125 if (SCARG(uap, flags) != MNT_NOWAIT && 126 SCARG(uap, flags) != MNT_LAZY && 127 (SCARG(uap, flags) == MNT_WAIT || 128 SCARG(uap, flags) == 0) && 129 (error = VFS_STATVFS(mp, sp, l)) != 0) { 130 simple_lock(&mountlist_slock); 131 nmp = mp->mnt_list.cqe_next; 132 vfs_unbusy(mp); 133 continue; 134 } 135 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 136 compat_20_netbsd32_from_statvfs(sp, &sb32); 137 error = copyout(&sb32, sfsp, sizeof(sb32)); 138 if (error) { 139 vfs_unbusy(mp); 140 return (error); 141 } 142 sfsp = (char *)sfsp + sizeof(sb32); 143 } 144 count++; 145 simple_lock(&mountlist_slock); 146 nmp = mp->mnt_list.cqe_next; 147 vfs_unbusy(mp); 148 } 149 simple_unlock(&mountlist_slock); 150 if (sfsp && count > maxcount) 151 *retval = maxcount; 152 else 153 *retval = count; 154 return (0); 155 } 156 157 int 158 compat_20_netbsd32_statfs(l, v, retval) 159 struct lwp *l; 160 void *v; 161 register_t *retval; 162 { 163 struct compat_20_netbsd32_statfs_args /* { 164 syscallarg(const netbsd32_charp) path; 165 syscallarg(netbsd32_statfsp_t) buf; 166 } */ *uap = v; 167 struct mount *mp; 168 struct statvfs *sp; 169 struct netbsd32_statfs s32; 170 int error; 171 struct nameidata nd; 172 173 NDINIT(&nd, LOOKUP, FOLLOW | TRYEMULROOT, UIO_USERSPACE, SCARG_P32(uap, path), l); 174 if ((error = namei(&nd)) != 0) 175 return (error); 176 mp = nd.ni_vp->v_mount; 177 sp = &mp->mnt_stat; 178 vrele(nd.ni_vp); 179 if ((error = VFS_STATVFS(mp, sp, l)) != 0) 180 return (error); 181 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 182 compat_20_netbsd32_from_statvfs(sp, &s32); 183 return copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 184 } 185 186 int 187 compat_20_netbsd32_fstatfs(l, v, retval) 188 struct lwp *l; 189 void *v; 190 register_t *retval; 191 { 192 struct compat_20_netbsd32_fstatfs_args /* { 193 syscallarg(int) fd; 194 syscallarg(netbsd32_statfsp_t) buf; 195 } */ *uap = v; 196 struct file *fp; 197 struct mount *mp; 198 struct statvfs *sp; 199 struct netbsd32_statfs s32; 200 int error; 201 struct proc *p = l->l_proc; 202 203 /* getvnode() will use the descriptor for us */ 204 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 205 return (error); 206 mp = ((struct vnode *)fp->f_data)->v_mount; 207 sp = &mp->mnt_stat; 208 if ((error = VFS_STATVFS(mp, sp, l)) != 0) 209 goto out; 210 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 211 compat_20_netbsd32_from_statvfs(sp, &s32); 212 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 213 out: 214 FILE_UNUSE(fp, l); 215 return (error); 216 } 217 218 int 219 compat_20_netbsd32_fhstatfs(l, v, retval) 220 struct lwp *l; 221 void *v; 222 register_t *retval; 223 { 224 struct compat_20_netbsd32_fhstatfs_args /* { 225 syscallarg(const netbsd32_fhandlep_t) fhp; 226 syscallarg(struct statvfs *) buf; 227 } */ *uap = v; 228 struct compat_30_sys_fhstatvfs1_args ua; 229 230 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 231 NETBSD32TOP_UAP(buf, struct statvfs); 232 #ifdef notyet 233 NETBSD32TOP_UAP(flags, int); 234 #endif 235 return (compat_30_sys_fhstatvfs1(l, &ua, retval)); 236 } 237
Indexes created Tue Sep 23 22:09:46 GMT 2025