netbsd32_compat_20.c revision 1.17
1 /* $NetBSD: netbsd32_compat_20.c,v 1.17 2007/12/08 18:36:17 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 1.17 2007/12/08 18:36:17 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(struct statvfs *sbp, struct netbsd32_statfs *sb32p) 58 { 59 sb32p->f_flags = sbp->f_flag; 60 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 61 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 62 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 63 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 64 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 65 sb32p->f_files = (netbsd32_long)sbp->f_files; 66 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 67 sb32p->f_fsid = sbp->f_fsidx; 68 sb32p->f_owner = sbp->f_owner; 69 sb32p->f_spare[0] = 0; 70 sb32p->f_spare[1] = 0; 71 sb32p->f_spare[2] = 0; 72 sb32p->f_spare[3] = 0; 73 #if 1 74 /* May as well do the whole batch in one go */ 75 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 76 sizeof(sb32p->f_fstypename) + 77 sizeof(sb32p->f_mntonname) + 78 sizeof(sb32p->f_mntfromname)); 79 #else 80 /* If we want to be careful */ 81 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 82 sizeof(sb32p->f_fstypename)); 83 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 84 sizeof(sb32p->f_mntonname)); 85 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 86 sizeof(sb32p->f_mntfromname)); 87 #endif 88 } 89 90 int 91 compat_20_netbsd32_getfsstat(struct lwp *l, void *v, register_t *retval) 92 { 93 struct compat_20_netbsd32_getfsstat_args /* { 94 syscallarg(netbsd32_statfsp_t) buf; 95 syscallarg(netbsd32_long) bufsize; 96 syscallarg(int) flags; 97 } */ *uap = v; 98 struct mount *mp, *nmp; 99 struct statvfs *sp; 100 struct netbsd32_statfs sb32; 101 void *sfsp; 102 long count, maxcount, error; 103 104 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 105 sfsp = SCARG_P32(uap, buf); 106 mutex_enter(&mountlist_lock); 107 count = 0; 108 for (mp = mountlist.cqh_first; mp != (void *)&mountlist; mp = nmp) { 109 if (vfs_busy(mp, LK_NOWAIT, &mountlist_lock)) { 110 nmp = mp->mnt_list.cqe_next; 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 nmp = mp->mnt_list.cqe_next; 127 vfs_unbusy(mp); 128 continue; 129 } 130 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 131 compat_20_netbsd32_from_statvfs(sp, &sb32); 132 error = copyout(&sb32, sfsp, sizeof(sb32)); 133 if (error) { 134 vfs_unbusy(mp); 135 return (error); 136 } 137 sfsp = (char *)sfsp + sizeof(sb32); 138 } 139 count++; 140 mutex_enter(&mountlist_lock); 141 nmp = mp->mnt_list.cqe_next; 142 vfs_unbusy(mp); 143 } 144 mutex_exit(&mountlist_lock); 145 if (sfsp && count > maxcount) 146 *retval = maxcount; 147 else 148 *retval = count; 149 return (0); 150 } 151 152 int 153 compat_20_netbsd32_statfs(struct lwp *l, void *v, register_t *retval) 154 { 155 struct compat_20_netbsd32_statfs_args /* { 156 syscallarg(const netbsd32_charp) path; 157 syscallarg(netbsd32_statfsp_t) buf; 158 } */ *uap = v; 159 struct mount *mp; 160 struct statvfs *sp; 161 struct netbsd32_statfs s32; 162 int error; 163 struct nameidata nd; 164 165 NDINIT(&nd, LOOKUP, FOLLOW | TRYEMULROOT, UIO_USERSPACE, SCARG_P32(uap, path), l); 166 if ((error = namei(&nd)) != 0) 167 return (error); 168 mp = nd.ni_vp->v_mount; 169 sp = &mp->mnt_stat; 170 vrele(nd.ni_vp); 171 if ((error = VFS_STATVFS(mp, sp)) != 0) 172 return (error); 173 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 174 compat_20_netbsd32_from_statvfs(sp, &s32); 175 return copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 176 } 177 178 int 179 compat_20_netbsd32_fstatfs(struct lwp *l, void *v, register_t *retval) 180 { 181 struct compat_20_netbsd32_fstatfs_args /* { 182 syscallarg(int) fd; 183 syscallarg(netbsd32_statfsp_t) buf; 184 } */ *uap = v; 185 struct file *fp; 186 struct mount *mp; 187 struct statvfs *sp; 188 struct netbsd32_statfs s32; 189 int error; 190 struct proc *p = l->l_proc; 191 192 /* getvnode() will use the descriptor for us */ 193 if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0) 194 return (error); 195 mp = ((struct vnode *)fp->f_data)->v_mount; 196 sp = &mp->mnt_stat; 197 if ((error = VFS_STATVFS(mp, sp)) != 0) 198 goto out; 199 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 200 compat_20_netbsd32_from_statvfs(sp, &s32); 201 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 202 out: 203 FILE_UNUSE(fp, l); 204 return (error); 205 } 206 207 int 208 compat_20_netbsd32_fhstatfs(struct lwp *l, void *v, register_t *retval) 209 { 210 struct compat_20_netbsd32_fhstatfs_args /* { 211 syscallarg(const netbsd32_fhandlep_t) fhp; 212 syscallarg(struct statvfs *) buf; 213 } */ *uap = v; 214 struct compat_30_sys_fhstatvfs1_args ua; 215 216 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 217 NETBSD32TOP_UAP(buf, struct statvfs); 218 #ifdef notyet 219 NETBSD32TOP_UAP(flags, int); 220 #endif 221 return (compat_30_sys_fhstatvfs1(l, &ua, retval)); 222 } 223
Indexes created Tue Sep 23 07:09:52 GMT 2025