netbsd32_compat_20.c revision 1.33.10.1
1 /* $NetBSD: netbsd32_compat_20.c,v 1.33.10.1 2020/01/21 19:23:37 martin 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 1.33.10.1 2020/01/21 19:23:37 martin 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_type = 0; /* XXX Put an actual value? */ 57 sb32p->f_flags = sbp->f_flag; 58 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 59 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 60 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 61 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 62 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 63 sb32p->f_files = (netbsd32_long)sbp->f_files; 64 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 65 sb32p->f_fsid = sbp->f_fsidx; 66 sb32p->f_owner = sbp->f_owner; 67 sb32p->f_spare[0] = 0; 68 sb32p->f_spare[1] = 0; 69 sb32p->f_spare[2] = 0; 70 sb32p->f_spare[3] = 0; 71 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 72 sizeof(sb32p->f_fstypename)); 73 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 74 sizeof(sb32p->f_mntonname)); 75 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 76 sizeof(sb32p->f_mntfromname)); 77 } 78 79 int 80 compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval) 81 { 82 /* { 83 syscallarg(netbsd32_statfsp_t) buf; 84 syscallarg(netbsd32_long) bufsize; 85 syscallarg(int) flags; 86 } */ 87 int root = 0; 88 struct proc *p = l->l_proc; 89 struct mount *mp, *nmp; 90 struct statvfs *sb; 91 struct netbsd32_statfs sb32; 92 void *sfsp; 93 size_t count, maxcount; 94 int error = 0; 95 96 sb = STATVFSBUF_GET(); 97 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 98 sfsp = SCARG_P32(uap, buf); 99 mutex_enter(&mountlist_lock); 100 count = 0; 101 for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) { 102 if (vfs_busy(mp, &nmp)) { 103 continue; 104 } 105 if (sfsp && count < maxcount) { 106 error = dostatvfs(mp, sb, l, SCARG(uap, flags), 0); 107 if (error) { 108 vfs_unbusy(mp, false, &nmp); 109 error = 0; 110 continue; 111 } 112 compat_20_netbsd32_from_statvfs(sb, &sb32); 113 error = copyout(&sb32, sfsp, sizeof(sb32)); 114 if (error) { 115 vfs_unbusy(mp, false, NULL); 116 goto out; 117 } 118 sfsp = (char *)sfsp + sizeof(sb32); 119 root |= strcmp(sb->f_mntonname, "/") == 0; 120 } 121 count++; 122 vfs_unbusy(mp, false, &nmp); 123 } 124 mutex_exit(&mountlist_lock); 125 126 if (root == 0 && p->p_cwdi->cwdi_rdir) { 127 /* 128 * fake a root entry 129 */ 130 error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, 131 sb, l, SCARG(uap, flags), 1); 132 if (error != 0) 133 goto out; 134 if (sfsp) { 135 compat_20_netbsd32_from_statvfs(sb, &sb32); 136 error = copyout(&sb32, sfsp, sizeof(sb32)); 137 if (error != 0) 138 goto out; 139 } 140 count++; 141 } 142 143 if (sfsp && count > maxcount) 144 *retval = maxcount; 145 else 146 *retval = count; 147 out: 148 STATVFSBUF_PUT(sb); 149 return error; 150 } 151 152 int 153 compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval) 154 { 155 /* { 156 syscallarg(const netbsd32_charp) path; 157 syscallarg(netbsd32_statfsp_t) buf; 158 } */ 159 struct mount *mp; 160 struct statvfs *sb; 161 struct netbsd32_statfs s32; 162 int error; 163 struct vnode *vp; 164 165 error = namei_simple_user(SCARG_P32(uap, path), 166 NSM_FOLLOW_TRYEMULROOT, &vp); 167 if (error != 0) 168 return (error); 169 mp = vp->v_mount; 170 sb = &mp->mnt_stat; 171 vrele(vp); 172 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 173 return (error); 174 compat_20_netbsd32_from_statvfs(sb, &s32); 175 return copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 176 } 177 178 int 179 compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval) 180 { 181 /* { 182 syscallarg(int) fd; 183 syscallarg(netbsd32_statfsp_t) buf; 184 } */ 185 file_t *fp; 186 struct mount *mp; 187 struct statvfs *sb; 188 struct netbsd32_statfs s32; 189 int error; 190 191 /* fd_getvnode() will use the descriptor for us */ 192 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 193 return (error); 194 mp = ((struct vnode *)fp->f_data)->v_mount; 195 sb = &mp->mnt_stat; 196 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 197 goto out; 198 compat_20_netbsd32_from_statvfs(sb, &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