1 /* $NetBSD: netbsd32_compat_20.c,v 1.42 2021/09/07 11:43:05 riastradh 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 1.42 2021/09/07 11:43:05 riastradh Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/module.h> 35 #include <sys/mount.h> 36 #include <sys/stat.h> 37 #include <sys/time.h> 38 #include <sys/ktrace.h> 39 #include <sys/vnode.h> 40 #include <sys/socket.h> 41 #include <sys/file.h> 42 #include <sys/filedesc.h> 43 #include <sys/namei.h> 44 #include <sys/syscallargs.h> 45 #include <sys/syscallvar.h> 46 #include <sys/proc.h> 47 #include <sys/dirent.h> 48 49 #include <compat/netbsd32/netbsd32.h> 50 #include <compat/netbsd32/netbsd32_syscall.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 61 memset(sb32p, 0, sizeof(*sb32p)); 62 sb32p->f_type = 0; /* XXX Put an actual value? */ 63 sb32p->f_flags = sbp->f_flag; 64 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 65 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 66 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 67 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 68 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 69 sb32p->f_files = (netbsd32_long)sbp->f_files; 70 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 71 sb32p->f_fsid = sbp->f_fsidx; 72 sb32p->f_owner = sbp->f_owner; 73 sb32p->f_spare[0] = 0; 74 sb32p->f_spare[1] = 0; 75 sb32p->f_spare[2] = 0; 76 sb32p->f_spare[3] = 0; 77 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 78 sizeof(sb32p->f_fstypename)); 79 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 80 sizeof(sb32p->f_mntonname)); 81 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 82 sizeof(sb32p->f_mntfromname)); 83 } 84 85 int 86 compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval) 87 { 88 /* { 89 syscallarg(netbsd32_statfsp_t) buf; 90 syscallarg(netbsd32_long) bufsize; 91 syscallarg(int) flags; 92 } */ 93 int root = 0; 94 struct proc *p = l->l_proc; 95 mount_iterator_t *iter; 96 struct mount *mp; 97 struct statvfs *sb; 98 struct netbsd32_statfs sb32; 99 void *sfsp; 100 size_t count, maxcount; 101 int error = 0; 102 103 sb = STATVFSBUF_GET(); 104 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 105 sfsp = SCARG_P32(uap, buf); 106 mountlist_iterator_init(&iter); 107 count = 0; 108 while ((mp = mountlist_iterator_next(iter)) != NULL) { 109 if (sfsp && count < maxcount) { 110 error = dostatvfs(mp, sb, l, SCARG(uap, flags), 0); 111 if (error) { 112 error = 0; 113 continue; 114 } 115 compat_20_netbsd32_from_statvfs(sb, &sb32); 116 error = copyout(&sb32, sfsp, sizeof(sb32)); 117 if (error) 118 goto out; 119 sfsp = (char *)sfsp + sizeof(sb32); 120 root |= strcmp(sb->f_mntonname, "/") == 0; 121 } 122 count++; 123 } 124 125 if (root == 0 && p->p_cwdi->cwdi_rdir) { 126 /* 127 * fake a root entry 128 */ 129 error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, 130 sb, l, SCARG(uap, flags), 1); 131 if (error != 0) 132 goto out; 133 if (sfsp) { 134 compat_20_netbsd32_from_statvfs(sb, &sb32); 135 error = copyout(&sb32, sfsp, sizeof(sb32)); 136 if (error != 0) 137 goto out; 138 } 139 count++; 140 } 141 142 if (sfsp && count > maxcount) 143 *retval = maxcount; 144 else 145 *retval = count; 146 out: 147 mountlist_iterator_destroy(iter); 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 vrele(vp); 171 sb = STATVFSBUF_GET(); 172 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 173 goto out; 174 compat_20_netbsd32_from_statvfs(sb, &s32); 175 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 176 out: 177 STATVFSBUF_PUT(sb); 178 return error; 179 } 180 181 int 182 compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval) 183 { 184 /* { 185 syscallarg(int) fd; 186 syscallarg(netbsd32_statfsp_t) buf; 187 } */ 188 file_t *fp; 189 struct mount *mp; 190 struct statvfs *sb; 191 struct netbsd32_statfs s32; 192 int error; 193 194 /* fd_getvnode() will use the descriptor for us */ 195 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 196 return error; 197 mp = fp->f_vnode->v_mount; 198 sb = STATVFSBUF_GET(); 199 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 200 goto out; 201 compat_20_netbsd32_from_statvfs(sb, &s32); 202 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 203 out: 204 STATVFSBUF_PUT(sb); 205 fd_putfile(SCARG(uap, fd)); 206 return error; 207 } 208 209 int 210 compat_20_netbsd32_fhstatfs(struct lwp *l, const struct compat_20_netbsd32_fhstatfs_args *uap, register_t *retval) 211 { 212 /* { 213 syscallarg(const netbsd32_fhandlep_t) fhp; 214 syscallarg(struct statvfs *) buf; 215 } */ 216 struct compat_30_sys_fhstatvfs1_args ua; 217 218 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 219 NETBSD32TOP_UAP(buf, struct statvfs); 220 #ifdef notyet 221 NETBSD32TOP_UAP(flags, int); 222 #endif 223 return compat_30_sys_fhstatvfs1(l, &ua, retval); 224 } 225 226 static struct syscall_package compat_netbsd32_20_syscalls[] = { 227 { NETBSD32_SYS_compat_20_netbsd32_statfs, 0, 228 (sy_call_t *)compat_20_netbsd32_statfs }, 229 { NETBSD32_SYS_compat_20_netbsd32_fstatfs, 0, 230 (sy_call_t *)compat_20_netbsd32_fstatfs }, 231 { NETBSD32_SYS_compat_20_netbsd32_fhstatfs, 0, 232 (sy_call_t *)compat_20_netbsd32_fhstatfs }, 233 { NETBSD32_SYS_compat_20_netbsd32_getfsstat, 0, 234 (sy_call_t *)compat_20_netbsd32_getfsstat }, 235 { 0, 0, NULL } 236 }; 237 238 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_20, "compat_netbsd32_30,compat_20"); 239 240 static int 241 compat_netbsd32_20_modcmd(modcmd_t cmd, void *arg) 242 { 243 244 switch (cmd) { 245 case MODULE_CMD_INIT: 246 return syscall_establish(&emul_netbsd32, 247 compat_netbsd32_20_syscalls); 248 249 case MODULE_CMD_FINI: 250 return syscall_disestablish(&emul_netbsd32, 251 compat_netbsd32_20_syscalls); 252 253 default: 254 return ENOTTY; 255 } 256 } 257
Indexes created Sat Sep 20 22:09:52 GMT 2025