netbsd32_compat_20.c revision 1.29
1 /* $NetBSD: netbsd32_compat_20.c,v 1.29 2013/11/23 16:15:24 riz 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_20.c,v 1.29 2013/11/23 16:15:24 riz Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/mount.h> 35 #include <sys/stat.h> 36 #include <sys/time.h> 37 #include <sys/ktrace.h> 38 #include <sys/vnode.h> 39 #include <sys/file.h> 40 #include <sys/filedesc.h> 41 #include <sys/namei.h> 42 #include <sys/syscallargs.h> 43 #include <sys/proc.h> 44 #include <sys/dirent.h> 45 46 #include <compat/netbsd32/netbsd32.h> 47 #include <compat/netbsd32/netbsd32_syscallargs.h> 48 #include <compat/netbsd32/netbsd32_conv.h> 49 50 static inline void compat_20_netbsd32_from_statvfs(struct statvfs *, 51 struct netbsd32_statfs *); 52 53 static inline void 54 compat_20_netbsd32_from_statvfs(struct statvfs *sbp, struct netbsd32_statfs *sb32p) 55 { 56 sb32p->f_flags = sbp->f_flag; 57 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 58 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 59 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 60 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 61 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 62 sb32p->f_files = (netbsd32_long)sbp->f_files; 63 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 64 sb32p->f_fsid = sbp->f_fsidx; 65 sb32p->f_owner = sbp->f_owner; 66 sb32p->f_spare[0] = 0; 67 sb32p->f_spare[1] = 0; 68 sb32p->f_spare[2] = 0; 69 sb32p->f_spare[3] = 0; 70 #if 1 71 /* May as well do the whole batch in one go */ 72 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 73 sizeof(sb32p->f_fstypename) + 74 sizeof(sb32p->f_mntonname) + 75 sizeof(sb32p->f_mntfromname)); 76 #else 77 /* If we want to be careful */ 78 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 79 sizeof(sb32p->f_fstypename)); 80 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 81 sizeof(sb32p->f_mntonname)); 82 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 83 sizeof(sb32p->f_mntfromname)); 84 #endif 85 } 86 87 int 88 compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval) 89 { 90 /* { 91 syscallarg(netbsd32_statfsp_t) buf; 92 syscallarg(netbsd32_long) bufsize; 93 syscallarg(int) flags; 94 } */ 95 struct mount *mp, *nmp; 96 struct statvfs *sp; 97 struct netbsd32_statfs sb32; 98 void *sfsp; 99 long count, maxcount, error; 100 101 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 102 sfsp = SCARG_P32(uap, buf); 103 mutex_enter(&mountlist_lock); 104 count = 0; 105 for (mp = mountlist.tqh_first; mp != (void *)&mountlist; mp = nmp) { 106 if (vfs_busy(mp, &nmp)) { 107 continue; 108 } 109 if (sfsp && count < maxcount) { 110 sp = &mp->mnt_stat; 111 /* 112 * If MNT_NOWAIT or MNT_LAZY is specified, do not 113 * refresh the fsstat cache. MNT_WAIT or MNT_LAZY 114 * overrides MNT_NOWAIT. 115 */ 116 if (SCARG(uap, flags) != MNT_NOWAIT && 117 SCARG(uap, flags) != MNT_LAZY && 118 (SCARG(uap, flags) == MNT_WAIT || 119 SCARG(uap, flags) == 0) && 120 (error = VFS_STATVFS(mp, sp)) != 0) { 121 mutex_enter(&mountlist_lock); 122 vfs_unbusy(mp, false, &nmp); 123 continue; 124 } 125 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 126 compat_20_netbsd32_from_statvfs(sp, &sb32); 127 error = copyout(&sb32, sfsp, sizeof(sb32)); 128 if (error) { 129 vfs_unbusy(mp, false, NULL); 130 return (error); 131 } 132 sfsp = (char *)sfsp + sizeof(sb32); 133 } 134 count++; 135 mutex_enter(&mountlist_lock); 136 vfs_unbusy(mp, false, &nmp); 137 } 138 mutex_exit(&mountlist_lock); 139 if (sfsp && count > maxcount) 140 *retval = maxcount; 141 else 142 *retval = count; 143 return (0); 144 } 145 146 int 147 compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval) 148 { 149 /* { 150 syscallarg(const netbsd32_charp) path; 151 syscallarg(netbsd32_statfsp_t) buf; 152 } */ 153 struct mount *mp; 154 struct statvfs *sp; 155 struct netbsd32_statfs s32; 156 int error; 157 struct vnode *vp; 158 159 error = namei_simple_user(SCARG_P32(uap, path), 160 NSM_FOLLOW_TRYEMULROOT, &vp); 161 if (error != 0) 162 return (error); 163 mp = vp->v_mount; 164 sp = &mp->mnt_stat; 165 vrele(vp); 166 if ((error = VFS_STATVFS(mp, sp)) != 0) 167 return (error); 168 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 169 compat_20_netbsd32_from_statvfs(sp, &s32); 170 return copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 171 } 172 173 int 174 compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval) 175 { 176 /* { 177 syscallarg(int) fd; 178 syscallarg(netbsd32_statfsp_t) buf; 179 } */ 180 file_t *fp; 181 struct mount *mp; 182 struct statvfs *sp; 183 struct netbsd32_statfs s32; 184 int error; 185 186 /* fd_getvnode() will use the descriptor for us */ 187 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 188 return (error); 189 mp = ((struct vnode *)fp->f_data)->v_mount; 190 sp = &mp->mnt_stat; 191 if ((error = VFS_STATVFS(mp, sp)) != 0) 192 goto out; 193 sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK; 194 compat_20_netbsd32_from_statvfs(sp, &s32); 195 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 196 out: 197 fd_putfile(SCARG(uap, fd)); 198 return (error); 199 } 200 201 int 202 compat_20_netbsd32_fhstatfs(struct lwp *l, const struct compat_20_netbsd32_fhstatfs_args *uap, register_t *retval) 203 { 204 /* { 205 syscallarg(const netbsd32_fhandlep_t) fhp; 206 syscallarg(struct statvfs *) buf; 207 } */ 208 struct compat_30_sys_fhstatvfs1_args ua; 209 210 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 211 NETBSD32TOP_UAP(buf, struct statvfs); 212 #ifdef notyet 213 NETBSD32TOP_UAP(flags, int); 214 #endif 215 return (compat_30_sys_fhstatvfs1(l, &ua, retval)); 216 } 217
Indexes created Thu Oct 02 07:10:07 GMT 2025