| 1 | /* |
| 2 | * 43BSD_HOSTINFO.C - 4.3BSD compatibility host info syscalls |
| 3 | * |
| 4 | * Copyright (c) 1982, 1986, 1989, 1993 |
| 5 | * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software |
| 16 | * must display the following acknowledgement: |
| 17 | * This product includes software developed by the University of |
| 18 | * California, Berkeley and its contributors. |
| 19 | * 4. Neither the name of the University nor the names of its contributors |
| 20 | * may be used to endorse or promote products derived from this software |
| 21 | * without specific prior written permission. |
| 22 | * |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 33 | * SUCH DAMAGE. |
| 34 | * |
| 35 | * $DragonFly: src/sys/emulation/43bsd/43bsd_hostinfo.c,v 1.2 2003/11/14 02:54:52 daver Exp $ |
| 36 | * from: DragonFly kern/kern_xxx.c,v 1.7 |
| 37 | * from: DragonFly kern/kern_sysctl.c,v 1.12 |
| 38 | * |
| 39 | * These syscalls used to live in kern/kern_xxx.c and kern/kern_sysctl.c. |
| 40 | */ |
| 41 | |
| 42 | #include "opt_compat.h" |
| 43 | |
| 44 | #include <sys/param.h> |
| 45 | #include <sys/systm.h> |
| 46 | #include <sys/sysproto.h> |
| 47 | #include <sys/kernel.h> |
| 48 | #include <sys/proc.h> |
| 49 | #include <sys/socket.h> |
| 50 | #include <sys/sysctl.h> |
| 51 | #include <vm/vm_param.h> |
| 52 | |
| 53 | int |
| 54 | ogethostname(struct gethostname_args *uap) |
| 55 | { |
| 56 | size_t len; |
| 57 | char *hostname; |
| 58 | int error, name[2]; |
| 59 | |
| 60 | name[0] = CTL_KERN; |
| 61 | name[1] = KERN_HOSTNAME; |
| 62 | len = MIN(uap->len, MAXHOSTNAMELEN); |
| 63 | hostname = malloc(MAXHOSTNAMELEN, M_TEMP, M_WAITOK); |
| 64 | |
| 65 | error = kernel_sysctl(name, 2, hostname, &len, NULL, 0, NULL); |
| 66 | |
| 67 | if (error == 0) |
| 68 | error = copyout(hostname, uap->hostname, len); |
| 69 | |
| 70 | free(hostname, M_TEMP); |
| 71 | return (error); |
| 72 | } |
| 73 | |
| 74 | int |
| 75 | osethostname(struct sethostname_args *uap) |
| 76 | { |
| 77 | struct thread *td = curthread; |
| 78 | struct proc *p = td->td_proc; |
| 79 | size_t len; |
| 80 | char *hostname; |
| 81 | int name[2]; |
| 82 | int error; |
| 83 | |
| 84 | KKASSERT(p); |
| 85 | name[0] = CTL_KERN; |
| 86 | name[1] = KERN_HOSTNAME; |
| 87 | error = suser_cred(p->p_ucred, PRISON_ROOT); |
| 88 | if (error) |
| 89 | return (error); |
| 90 | len = MIN(uap->len, MAXHOSTNAMELEN); |
| 91 | hostname = malloc(MAXHOSTNAMELEN, M_TEMP, M_WAITOK); |
| 92 | |
| 93 | error = copyin(uap->hostname, hostname, len); |
| 94 | if (error) { |
| 95 | free(hostname, M_TEMP); |
| 96 | return (error); |
| 97 | } |
| 98 | |
| 99 | error = kernel_sysctl(name, 2, NULL, 0, hostname, len, NULL); |
| 100 | |
| 101 | free(hostname, M_TEMP); |
| 102 | return (error); |
| 103 | } |
| 104 | |
| 105 | int |
| 106 | ogethostid(struct ogethostid_args *uap) |
| 107 | { |
| 108 | uap->sysmsg_lresult = hostid; |
| 109 | return (0); |
| 110 | } |
| 111 | |
| 112 | int |
| 113 | osethostid(struct osethostid_args *uap) |
| 114 | { |
| 115 | struct thread *td = curthread; |
| 116 | int error; |
| 117 | |
| 118 | error = suser(td); |
| 119 | if (error) |
| 120 | return (error); |
| 121 | hostid = uap->hostid; |
| 122 | return (0); |
| 123 | } |
| 124 | |
| 125 | int |
| 126 | oquota(struct oquota_args *uap) |
| 127 | { |
| 128 | return (ENOSYS); |
| 129 | } |
| 130 | |
| 131 | #define KINFO_PROC (0<<8) |
| 132 | #define KINFO_RT (1<<8) |
| 133 | #define KINFO_VNODE (2<<8) |
| 134 | #define KINFO_FILE (3<<8) |
| 135 | #define KINFO_METER (4<<8) |
| 136 | #define KINFO_LOADAVG (5<<8) |
| 137 | #define KINFO_CLOCKRATE (6<<8) |
| 138 | |
| 139 | /* Non-standard BSDI extension - only present on their 4.3 net-2 releases */ |
| 140 | #define KINFO_BSDI_SYSINFO (101<<8) |
| 141 | |
| 142 | /* |
| 143 | * XXX this is bloat, but I hope it's better here than on the potentially |
| 144 | * limited kernel stack... -Peter |
| 145 | */ |
| 146 | |
| 147 | static struct { |
| 148 | int bsdi_machine; /* "i386" on BSD/386 */ |
| 149 | /* ^^^ this is an offset to the string, relative to the struct start */ |
| 150 | char *pad0; |
| 151 | long pad1; |
| 152 | long pad2; |
| 153 | long pad3; |
| 154 | u_long pad4; |
| 155 | u_long pad5; |
| 156 | u_long pad6; |
| 157 | |
| 158 | int bsdi_ostype; /* "BSD/386" on BSD/386 */ |
| 159 | int bsdi_osrelease; /* "1.1" on BSD/386 */ |
| 160 | long pad7; |
| 161 | long pad8; |
| 162 | char *pad9; |
| 163 | |
| 164 | long pad10; |
| 165 | long pad11; |
| 166 | int pad12; |
| 167 | long pad13; |
| 168 | quad_t pad14; |
| 169 | long pad15; |
| 170 | |
| 171 | struct timeval pad16; |
| 172 | /* we dont set this, because BSDI's uname used gethostname() instead */ |
| 173 | int bsdi_hostname; /* hostname on BSD/386 */ |
| 174 | |
| 175 | /* the actual string data is appended here */ |
| 176 | |
| 177 | } bsdi_si; |
| 178 | /* |
| 179 | * this data is appended to the end of the bsdi_si structure during copyout. |
| 180 | * The "char *" offsets are relative to the base of the bsdi_si struct. |
| 181 | * This contains "FreeBSD\02.0-BUILT-nnnnnn\0i386\0", and these strings |
| 182 | * should not exceed the length of the buffer here... (or else!! :-) |
| 183 | */ |
| 184 | static char bsdi_strings[80]; /* It had better be less than this! */ |
| 185 | |
| 186 | int |
| 187 | ogetkerninfo(struct getkerninfo_args *uap) |
| 188 | { |
| 189 | int error, name[6]; |
| 190 | size_t size; |
| 191 | u_int needed = 0; |
| 192 | |
| 193 | switch (uap->op & 0xff00) { |
| 194 | |
| 195 | case KINFO_RT: |
| 196 | name[0] = CTL_NET; |
| 197 | name[1] = PF_ROUTE; |
| 198 | name[2] = 0; |
| 199 | name[3] = (uap->op & 0xff0000) >> 16; |
| 200 | name[4] = uap->op & 0xff; |
| 201 | name[5] = uap->arg; |
| 202 | error = userland_sysctl(name, 6, uap->where, uap->size, |
| 203 | 0, 0, 0, &size); |
| 204 | break; |
| 205 | |
| 206 | case KINFO_VNODE: |
| 207 | name[0] = CTL_KERN; |
| 208 | name[1] = KERN_VNODE; |
| 209 | error = userland_sysctl(name, 2, uap->where, uap->size, |
| 210 | 0, 0, 0, &size); |
| 211 | break; |
| 212 | |
| 213 | case KINFO_PROC: |
| 214 | name[0] = CTL_KERN; |
| 215 | name[1] = KERN_PROC; |
| 216 | name[2] = uap->op & 0xff; |
| 217 | name[3] = uap->arg; |
| 218 | error = userland_sysctl(name, 4, uap->where, uap->size, |
| 219 | 0, 0, 0, &size); |
| 220 | break; |
| 221 | |
| 222 | case KINFO_FILE: |
| 223 | name[0] = CTL_KERN; |
| 224 | name[1] = KERN_FILE; |
| 225 | error = userland_sysctl(name, 2, uap->where, uap->size, |
| 226 | 0, 0, 0, &size); |
| 227 | break; |
| 228 | |
| 229 | case KINFO_METER: |
| 230 | name[0] = CTL_VM; |
| 231 | name[1] = VM_METER; |
| 232 | error = userland_sysctl(name, 2, uap->where, uap->size, |
| 233 | 0, 0, 0, &size); |
| 234 | break; |
| 235 | |
| 236 | case KINFO_LOADAVG: |
| 237 | name[0] = CTL_VM; |
| 238 | name[1] = VM_LOADAVG; |
| 239 | error = userland_sysctl(name, 2, uap->where, uap->size, |
| 240 | 0, 0, 0, &size); |
| 241 | break; |
| 242 | |
| 243 | case KINFO_CLOCKRATE: |
| 244 | name[0] = CTL_KERN; |
| 245 | name[1] = KERN_CLOCKRATE; |
| 246 | error = userland_sysctl(name, 2, uap->where, uap->size, |
| 247 | 0, 0, 0, &size); |
| 248 | break; |
| 249 | |
| 250 | case KINFO_BSDI_SYSINFO: { |
| 251 | /* |
| 252 | * this is pretty crude, but it's just enough for uname() |
| 253 | * from BSDI's 1.x libc to work. |
| 254 | * *size gives the size of the buffer before the call, and |
| 255 | * the amount of data copied after a successful call. |
| 256 | * If successful, the return value is the amount of data |
| 257 | * available, which can be larger than *size. |
| 258 | * |
| 259 | * BSDI's 2.x product apparently fails with ENOMEM if |
| 260 | * *size is too small. |
| 261 | */ |
| 262 | |
| 263 | u_int left; |
| 264 | char *s; |
| 265 | |
| 266 | bzero((char *)&bsdi_si, sizeof(bsdi_si)); |
| 267 | bzero(bsdi_strings, sizeof(bsdi_strings)); |
| 268 | |
| 269 | s = bsdi_strings; |
| 270 | |
| 271 | bsdi_si.bsdi_ostype = (s - bsdi_strings) + sizeof(bsdi_si); |
| 272 | strcpy(s, ostype); |
| 273 | s += strlen(s) + 1; |
| 274 | |
| 275 | bsdi_si.bsdi_osrelease = (s - bsdi_strings) + sizeof(bsdi_si); |
| 276 | strcpy(s, osrelease); |
| 277 | s += strlen(s) + 1; |
| 278 | |
| 279 | bsdi_si.bsdi_machine = (s - bsdi_strings) + sizeof(bsdi_si); |
| 280 | strcpy(s, machine); |
| 281 | s += strlen(s) + 1; |
| 282 | |
| 283 | needed = sizeof(bsdi_si) + (s - bsdi_strings); |
| 284 | |
| 285 | if (uap->where == NULL || (uap->size == NULL)) { |
| 286 | /* process is asking how much buffer to supply.. */ |
| 287 | size = needed; |
| 288 | error = 0; |
| 289 | break; |
| 290 | } |
| 291 | |
| 292 | if ((error = copyin(uap->size, &size, sizeof(size))) != 0) |
| 293 | break; |
| 294 | |
| 295 | /* if too much buffer supplied, trim it down */ |
| 296 | if (size > needed) |
| 297 | size = needed; |
| 298 | |
| 299 | /* how much of the buffer is remaining */ |
| 300 | left = size; |
| 301 | |
| 302 | if ((error = copyout((char *)&bsdi_si, uap->where, left)) != 0) |
| 303 | break; |
| 304 | |
| 305 | /* is there any point in continuing? */ |
| 306 | if (left > sizeof(bsdi_si)) { |
| 307 | left -= sizeof(bsdi_si); |
| 308 | error = copyout(&bsdi_strings, |
| 309 | uap->where + sizeof(bsdi_si), left); |
| 310 | } |
| 311 | break; |
| 312 | } |
| 313 | |
| 314 | default: |
| 315 | return (EOPNOTSUPP); |
| 316 | } |
| 317 | if (error) |
| 318 | return (error); |
| 319 | uap->sysmsg_result = size; |
| 320 | if (uap->size) |
| 321 | error = copyout((caddr_t)&size, (caddr_t)uap->size, |
| 322 | sizeof(size)); |
| 323 | return (error); |
| 324 | } |