netbsd32_compat_20.c revision 1.36.10.7
1 /* $NetBSD: netbsd32_compat_20.c,v 1.36.10.7 2018/09/11 05:00:42 pgoyette 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 1.36.10.7 2018/09/11 05:00:42 pgoyette 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 extern struct emul emul_netbsd32; 55 56 static inline void compat_20_netbsd32_from_statvfs(struct statvfs *, 57 struct netbsd32_statfs *); 58 59 static inline void 60 compat_20_netbsd32_from_statvfs(struct statvfs *sbp, struct netbsd32_statfs *sb32p) 61 { 62 sb32p->f_flags = sbp->f_flag; 63 sb32p->f_bsize = (netbsd32_long)sbp->f_bsize; 64 sb32p->f_iosize = (netbsd32_long)sbp->f_iosize; 65 sb32p->f_blocks = (netbsd32_long)sbp->f_blocks; 66 sb32p->f_bfree = (netbsd32_long)sbp->f_bfree; 67 sb32p->f_bavail = (netbsd32_long)sbp->f_bavail; 68 sb32p->f_files = (netbsd32_long)sbp->f_files; 69 sb32p->f_ffree = (netbsd32_long)sbp->f_ffree; 70 sb32p->f_fsid = sbp->f_fsidx; 71 sb32p->f_owner = sbp->f_owner; 72 sb32p->f_spare[0] = 0; 73 sb32p->f_spare[1] = 0; 74 sb32p->f_spare[2] = 0; 75 sb32p->f_spare[3] = 0; 76 (void)memcpy(sb32p->f_fstypename, sbp->f_fstypename, 77 sizeof(sb32p->f_fstypename)); 78 (void)memcpy(sb32p->f_mntonname, sbp->f_mntonname, 79 sizeof(sb32p->f_mntonname)); 80 (void)memcpy(sb32p->f_mntfromname, sbp->f_mntfromname, 81 sizeof(sb32p->f_mntfromname)); 82 } 83 84 int 85 compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval) 86 { 87 /* { 88 syscallarg(netbsd32_statfsp_t) buf; 89 syscallarg(netbsd32_long) bufsize; 90 syscallarg(int) flags; 91 } */ 92 int root = 0; 93 struct proc *p = l->l_proc; 94 mount_iterator_t *iter; 95 struct mount *mp; 96 struct statvfs *sb; 97 struct netbsd32_statfs sb32; 98 void *sfsp; 99 size_t count, maxcount; 100 int error = 0; 101 102 sb = STATVFSBUF_GET(); 103 maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs); 104 sfsp = SCARG_P32(uap, buf); 105 mountlist_iterator_init(&iter); 106 count = 0; 107 while ((mp = mountlist_iterator_next(iter)) != NULL) { 108 if (sfsp && count < maxcount) { 109 error = dostatvfs(mp, sb, l, SCARG(uap, flags), 0); 110 if (error) { 111 error = 0; 112 continue; 113 } 114 compat_20_netbsd32_from_statvfs(sb, &sb32); 115 error = copyout(&sb32, sfsp, sizeof(sb32)); 116 if (error) 117 goto out; 118 sfsp = (char *)sfsp + sizeof(sb32); 119 root |= strcmp(sb->f_mntonname, "/") == 0; 120 } 121 count++; 122 } 123 124 if (root == 0 && p->p_cwdi->cwdi_rdir) { 125 /* 126 * fake a root entry 127 */ 128 error = dostatvfs(p->p_cwdi->cwdi_rdir->v_mount, 129 sb, l, SCARG(uap, flags), 1); 130 if (error != 0) 131 goto out; 132 if (sfsp) { 133 compat_20_netbsd32_from_statvfs(sb, &sb32); 134 error = copyout(&sb32, sfsp, sizeof(sb32)); 135 if (error != 0) 136 goto out; 137 } 138 count++; 139 } 140 141 if (sfsp && count > maxcount) 142 *retval = maxcount; 143 else 144 *retval = count; 145 out: 146 mountlist_iterator_destroy(iter); 147 STATVFSBUF_PUT(sb); 148 return error; 149 } 150 151 int 152 compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval) 153 { 154 /* { 155 syscallarg(const netbsd32_charp) path; 156 syscallarg(netbsd32_statfsp_t) buf; 157 } */ 158 struct mount *mp; 159 struct statvfs *sb; 160 struct netbsd32_statfs s32; 161 int error; 162 struct vnode *vp; 163 164 error = namei_simple_user(SCARG_P32(uap, path), 165 NSM_FOLLOW_TRYEMULROOT, &vp); 166 if (error != 0) 167 return (error); 168 mp = vp->v_mount; 169 vrele(vp); 170 sb = STATVFSBUF_GET(); 171 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 172 goto out; 173 compat_20_netbsd32_from_statvfs(sb, &s32); 174 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 175 out: 176 STATVFSBUF_PUT(sb); 177 return error; 178 } 179 180 int 181 compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval) 182 { 183 /* { 184 syscallarg(int) fd; 185 syscallarg(netbsd32_statfsp_t) buf; 186 } */ 187 file_t *fp; 188 struct mount *mp; 189 struct statvfs *sb; 190 struct netbsd32_statfs s32; 191 int error; 192 193 /* fd_getvnode() will use the descriptor for us */ 194 if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0) 195 return (error); 196 mp = fp->f_vnode->v_mount; 197 sb = STATVFSBUF_GET(); 198 if ((error = dostatvfs(mp, sb, l, 0, 0)) != 0) 199 goto out; 200 compat_20_netbsd32_from_statvfs(sb, &s32); 201 error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32)); 202 out: 203 STATVFSBUF_PUT(sb); 204 fd_putfile(SCARG(uap, fd)); 205 return (error); 206 } 207 208 int 209 compat_20_netbsd32_fhstatfs(struct lwp *l, const struct compat_20_netbsd32_fhstatfs_args *uap, register_t *retval) 210 { 211 /* { 212 syscallarg(const netbsd32_fhandlep_t) fhp; 213 syscallarg(struct statvfs *) buf; 214 } */ 215 struct compat_30_sys_fhstatvfs1_args ua; 216 217 NETBSD32TOP_UAP(fhp, const struct compat_30_fhandle); 218 NETBSD32TOP_UAP(buf, struct statvfs); 219 #ifdef notyet 220 NETBSD32TOP_UAP(flags, int); 221 #endif 222 return (compat_30_sys_fhstatvfs1(l, &ua, retval)); 223 } 224 225 static struct syscall_package compat_netbsd32_20_syscalls[] = { 226 { NETBSD32_SYS_compat_20_netbsd32_statfs, 0, 227 (sy_call_t *)compat_20_netbsd32_statfs }, 228 { NETBSD32_SYS_compat_20_netbsd32_fstatfs, 0, 229 (sy_call_t *)compat_20_netbsd32_fstatfs }, 230 { NETBSD32_SYS_compat_20_netbsd32_fhstatfs, 0, 231 (sy_call_t *)compat_20_netbsd32_fhstatfs }, 232 { NETBSD32_SYS_compat_20_netbsd32_getfsstat, 0, 233 (sy_call_t *)compat_20_netbsd32_getfsstat }, 234 { 0, 0, NULL } 235 }; 236 237 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_20, "compat_netbsd32,compat_20"); 238 239 static int 240 compat_netbsd32_20_modcmd(modcmd_t cmd, void *arg) 241 { 242 243 switch (cmd) { 244 case MODULE_CMD_INIT: 245 return syscall_establish(&emul_netbsd32, 246 compat_netbsd32_20_syscalls); 247 248 case MODULE_CMD_FINI: 249 return syscall_disestablish(&emul_netbsd32, 250 compat_netbsd32_20_syscalls); 251 252 default: 253 return ENOTTY; 254 } 255 } 256
Indexes created Thu Oct 02 07:10:07 GMT 2025