netbsd32_compat_20.c revision 1.24.2.1
1 /* $NetBSD: netbsd32_compat_20.c,v 1.24.2.1 2008/05/10 23:48:57 wrstuden 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 1.24.2.1 2008/05/10 23:48:57 wrstuden 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/sa.h> 46 #include <sys/syscallargs.h> 47 #include <sys/proc.h> 48 #include <sys/dirent.h> 49 50 #include <compat/netbsd32/netbsd32.h> 51 #include <compat/netbsd32/netbsd32_syscallargs.h> 52 #include <compat/netbsd32/netbsd32_conv.h> 53 54 static inline void compat_20_netbsd32_from_statvfs(struct statvfs *, 55 struct netbsd32_statfs *); 56 57 static inline void 58 compat_20_netbsd32_from_statvfs(struct statvfs *sbp, struct netbsd32_statfs *sb32p) 59 { 60 sb32p->f_flags = sbp->f_flag; 61 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 62 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 63 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 64 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 65 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 66 sb32p->f_files = (netbsd32_long)sbp->f_files; 67 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 68 sb32p->f_fsid = sbp->f_fsidx; 69 sb32p->f_owner = sbp->f_owner; 70 sb32p->f_spare[0] = 0; 71 sb32p->f_spare[1] = 0; 72 sb32p->f_spare[2] = 0; 73 sb32p->f_spare[3] = 0; 74 #if 1 75 /* May as well do the whole batch in one go */ 76 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 77 sizeof(sb32p->f_fstypename) + 78 sizeof(sb32p->f_mntonname) + 79 sizeof(sb32p->f_mntfromname)); 80 #else 81 /* If we want to be careful */ 82 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 83 sizeof(sb32p->f_fstypename)); 84 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 85 sizeof(sb32p->f_mntonname)); 86 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 87 sizeof(sb32p->f_mntfromname)); 88 #endif 89 } 90 91 int 92 compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval) 93 { 94 /* { 95 syscallarg(netbsd32_statfsp_t) buf; 96 syscallarg(netbsd32_long) bufsize; 97 syscallarg(int) flags; 98 } */ 99 struct mount *mp, *nmp; 100 struct statvfs *sp; 101 struct netbsd32_statfs sb32; 102 void *sfsp; 103 long count, maxcount, error; 104 105 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 106 sfsp = SCARG_P32(uap, buf); 107 mutex_enter(&mountlist_lock); 108 count = 0; 109 for (mp = mountlist.cqh_first; mp != (void *)&mountlist; mp = nmp) { 110 if (vfs_busy(mp, &nmp)) { 111 continue; 112 } 113 if (sfsp && count < maxcount) { 114 sp = &mp->mnt_stat; 115 /* 116 * If MNT_NOWAIT or MNT_LAZY is specified, do not 117 * refresh the fsstat cache. MNT_WAIT or MNT_LAZY 118 * overrides MNT_NOWAIT. 119 */ 120 if (SCARG(uap, flags) != MNT_NOWAIT && 121 SCARG(uap, flags) != MNT_LAZY && 122 (SCARG(uap, flags) == MNT_WAIT || 123 SCARG(uap, flags) == 0) && 124 (error = VFS_STATVFS(mp, sp)) != 0) { 125 mutex_enter(&mountlist_lock); 126 vfs_unbusy(mp, false, &nmp); 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, false, NULL); 134 return (error); 135 } 136 sfsp = (char *)sfsp + sizeof(sb32); 137 } 138 count++; 139 mutex_enter(&mountlist_lock); 140 vfs_unbusy(mp, false, &nmp); 141 } 142 mutex_exit(&mountlist_lock); 143 if (sfsp && count > maxcount) 144 *retval = maxcount; 145 else 146 *retval = count; 147 return (0); 148 } 149 150 int 151 compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval) 152 { 153 /* { 154 syscallarg(const netbsd32_charp) path; 155 syscallarg(netbsd32_statfsp_t) buf; 156 } */ 157 struct mount *mp; 158 struct statvfs *sp; 159 struct netbsd32_statfs s32; 160 int error; 161 struct nameidata nd; 162 163 NDINIT(&nd, LOOKUP, FOLLOW | TRYEMULROOT, UIO_USERSPACE, 164 SCARG_P32(uap, path)); 165 if ((error = namei(&nd)) != 0) 166 return (error); 167 mp = nd.ni_vp->v_mount; 168 sp = &mp->mnt_stat; 169 vrele(nd.ni_vp); 170 if ((error = VFS_STATVFS(mp, sp)) != 0) 171 return (error); 172 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 173 compat_20_netbsd32_from_statvfs(sp, &s32); 174 return copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 175 } 176 177 int 178 compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval) 179 { 180 /* { 181 syscallarg(int) fd; 182 syscallarg(netbsd32_statfsp_t) buf; 183 } */ 184 file_t *fp; 185 struct mount *mp; 186 struct statvfs *sp; 187 struct netbsd32_statfs s32; 188 int error; 189 190 /* getvnode() will use the descriptor for us */ 191 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 192 return (error); 193 mp = ((struct vnode *)fp->f_data)->v_mount; 194 sp = &mp->mnt_stat; 195 if ((error = VFS_STATVFS(mp, sp)) != 0) 196 goto out; 197 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 198 compat_20_netbsd32_from_statvfs(sp, &s32); 199 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 200 out: 201 fd_putfile(SCARG(uap, fd)); 202 return (error); 203 } 204 205 int 206 compat_20_netbsd32_fhstatfs(struct lwp *l, const struct compat_20_netbsd32_fhstatfs_args *uap, register_t *retval) 207 { 208 /* { 209 syscallarg(const netbsd32_fhandlep_t) fhp; 210 syscallarg(struct statvfs *) buf; 211 } */ 212 struct compat_30_sys_fhstatvfs1_args ua; 213 214 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 215 NETBSD32TOP_UAP(buf, struct statvfs); 216 #ifdef notyet 217 NETBSD32TOP_UAP(flags, int); 218 #endif 219 return (compat_30_sys_fhstatvfs1(l, &ua, retval)); 220 } 221
Indexes created Thu Oct 02 07:10:07 GMT 2025