| 1 | /* |
| 2 | * process related system call shims and definitions |
| 3 | * |
| 4 | * Copyright (c) 2013-2014 Stacey D. Son |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 7 | */ |
| 8 | |
| 9 | #ifndef BSD_PROC_H_ |
| 10 | #define BSD_PROC_H_ |
| 11 | |
| 12 | #include <sys/resource.h> |
| 13 | |
| 14 | #include "qemu-bsd.h" |
| 15 | #include "gdbstub/syscalls.h" |
| 16 | #include "qemu/plugin.h" |
| 17 | |
| 18 | extern int _getlogin(char*, int); |
| 19 | int bsd_get_ncpu(void); |
| 20 | |
| 21 | /* exit(2) */ |
| 22 | static inline abi_long do_bsd_exit(void *cpu_env, abi_long arg1) |
| 23 | { |
| 24 | gdb_exit(arg1); |
| 25 | qemu_plugin_user_exit(); |
| 26 | _exit(arg1); |
| 27 | |
| 28 | return 0; |
| 29 | } |
| 30 | |
| 31 | /* getgroups(2) */ |
| 32 | static inline abi_long do_bsd_getgroups(abi_long gidsetsize, abi_long arg2) |
| 33 | { |
| 34 | abi_long ret; |
| 35 | uint32_t *target_grouplist; |
| 36 | g_autofree gid_t *grouplist; |
| 37 | int i; |
| 38 | |
| 39 | grouplist = g_try_new(gid_t, gidsetsize); |
| 40 | ret = get_errno(getgroups(gidsetsize, grouplist)); |
| 41 | if (gidsetsize != 0) { |
| 42 | if (!is_error(ret)) { |
| 43 | target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 2, 0); |
| 44 | if (!target_grouplist) { |
| 45 | return -TARGET_EFAULT; |
| 46 | } |
| 47 | for (i = 0; i < ret; i++) { |
| 48 | target_grouplist[i] = tswap32(grouplist[i]); |
| 49 | } |
| 50 | unlock_user(target_grouplist, arg2, gidsetsize * 2); |
| 51 | } |
| 52 | } |
| 53 | return ret; |
| 54 | } |
| 55 | |
| 56 | /* setgroups(2) */ |
| 57 | static inline abi_long do_bsd_setgroups(abi_long gidsetsize, abi_long arg2) |
| 58 | { |
| 59 | uint32_t *target_grouplist; |
| 60 | g_autofree gid_t *grouplist; |
| 61 | int i; |
| 62 | |
| 63 | grouplist = g_try_new(gid_t, gidsetsize); |
| 64 | target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 2, 1); |
| 65 | if (!target_grouplist) { |
| 66 | return -TARGET_EFAULT; |
| 67 | } |
| 68 | for (i = 0; i < gidsetsize; i++) { |
| 69 | grouplist[i] = tswap32(target_grouplist[i]); |
| 70 | } |
| 71 | unlock_user(target_grouplist, arg2, 0); |
| 72 | return get_errno(setgroups(gidsetsize, grouplist)); |
| 73 | } |
| 74 | |
| 75 | /* umask(2) */ |
| 76 | static inline abi_long do_bsd_umask(abi_long arg1) |
| 77 | { |
| 78 | return get_errno(umask(arg1)); |
| 79 | } |
| 80 | |
| 81 | /* setlogin(2) */ |
| 82 | static inline abi_long do_bsd_setlogin(abi_long arg1) |
| 83 | { |
| 84 | abi_long ret; |
| 85 | void *p; |
| 86 | |
| 87 | p = lock_user_string(arg1); |
| 88 | if (p == NULL) { |
| 89 | return -TARGET_EFAULT; |
| 90 | } |
| 91 | ret = get_errno(setlogin(p)); |
| 92 | unlock_user(p, arg1, 0); |
| 93 | |
| 94 | return ret; |
| 95 | } |
| 96 | |
| 97 | /* getlogin(2) */ |
| 98 | static inline abi_long do_bsd_getlogin(abi_long arg1, abi_long arg2) |
| 99 | { |
| 100 | abi_long ret; |
| 101 | void *p; |
| 102 | |
| 103 | p = lock_user(VERIFY_WRITE, arg1, arg2, 0); |
| 104 | if (p == NULL) { |
| 105 | return -TARGET_EFAULT; |
| 106 | } |
| 107 | ret = get_errno(_getlogin(p, arg2)); |
| 108 | unlock_user(p, arg1, arg2); |
| 109 | |
| 110 | return ret; |
| 111 | } |
| 112 | |
| 113 | /* getrusage(2) */ |
| 114 | static inline abi_long do_bsd_getrusage(abi_long who, abi_ulong target_addr) |
| 115 | { |
| 116 | abi_long ret; |
| 117 | struct rusage rusage; |
| 118 | |
| 119 | ret = get_errno(getrusage(who, &rusage)); |
| 120 | if (!is_error(ret)) { |
| 121 | host_to_target_rusage(target_addr, &rusage); |
| 122 | } |
| 123 | return ret; |
| 124 | } |
| 125 | |
| 126 | /* getrlimit(2) */ |
| 127 | static inline abi_long do_bsd_getrlimit(abi_long arg1, abi_ulong arg2) |
| 128 | { |
| 129 | abi_long ret; |
| 130 | int resource = target_to_host_resource(arg1); |
| 131 | struct target_rlimit *target_rlim; |
| 132 | struct rlimit rlim; |
| 133 | |
| 134 | switch (resource) { |
| 135 | case RLIMIT_STACK: |
| 136 | rlim.rlim_cur = target_dflssiz; |
| 137 | rlim.rlim_max = target_maxssiz; |
| 138 | ret = 0; |
| 139 | break; |
| 140 | |
| 141 | case RLIMIT_DATA: |
| 142 | rlim.rlim_cur = target_dfldsiz; |
| 143 | rlim.rlim_max = target_maxdsiz; |
| 144 | ret = 0; |
| 145 | break; |
| 146 | |
| 147 | default: |
| 148 | ret = get_errno(getrlimit(resource, &rlim)); |
| 149 | break; |
| 150 | } |
| 151 | if (!is_error(ret)) { |
| 152 | if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) { |
| 153 | return -TARGET_EFAULT; |
| 154 | } |
| 155 | target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); |
| 156 | target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); |
| 157 | unlock_user_struct(target_rlim, arg2, 1); |
| 158 | } |
| 159 | return ret; |
| 160 | } |
| 161 | |
| 162 | /* setrlimit(2) */ |
| 163 | static inline abi_long do_bsd_setrlimit(abi_long arg1, abi_ulong arg2) |
| 164 | { |
| 165 | abi_long ret; |
| 166 | int resource = target_to_host_resource(arg1); |
| 167 | struct target_rlimit *target_rlim; |
| 168 | struct rlimit rlim; |
| 169 | |
| 170 | if (RLIMIT_STACK == resource) { |
| 171 | /* XXX We should, maybe, allow the stack size to shrink */ |
| 172 | ret = -TARGET_EPERM; |
| 173 | } else { |
| 174 | if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) { |
| 175 | return -TARGET_EFAULT; |
| 176 | } |
| 177 | rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); |
| 178 | rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); |
| 179 | unlock_user_struct(target_rlim, arg2, 0); |
| 180 | ret = get_errno(setrlimit(resource, &rlim)); |
| 181 | } |
| 182 | return ret; |
| 183 | } |
| 184 | |
| 185 | /* getpid(2) */ |
| 186 | static inline abi_long do_bsd_getpid(void) |
| 187 | { |
| 188 | return get_errno(getpid()); |
| 189 | } |
| 190 | |
| 191 | /* getppid(2) */ |
| 192 | static inline abi_long do_bsd_getppid(void) |
| 193 | { |
| 194 | return get_errno(getppid()); |
| 195 | } |
| 196 | |
| 197 | /* getuid(2) */ |
| 198 | static inline abi_long do_bsd_getuid(void) |
| 199 | { |
| 200 | return get_errno(getuid()); |
| 201 | } |
| 202 | |
| 203 | /* geteuid(2) */ |
| 204 | static inline abi_long do_bsd_geteuid(void) |
| 205 | { |
| 206 | return get_errno(geteuid()); |
| 207 | } |
| 208 | |
| 209 | /* getgid(2) */ |
| 210 | static inline abi_long do_bsd_getgid(void) |
| 211 | { |
| 212 | return get_errno(getgid()); |
| 213 | } |
| 214 | |
| 215 | /* getegid(2) */ |
| 216 | static inline abi_long do_bsd_getegid(void) |
| 217 | { |
| 218 | return get_errno(getegid()); |
| 219 | } |
| 220 | |
| 221 | /* setuid(2) */ |
| 222 | static inline abi_long do_bsd_setuid(abi_long arg1) |
| 223 | { |
| 224 | return get_errno(setuid(arg1)); |
| 225 | } |
| 226 | |
| 227 | /* seteuid(2) */ |
| 228 | static inline abi_long do_bsd_seteuid(abi_long arg1) |
| 229 | { |
| 230 | return get_errno(seteuid(arg1)); |
| 231 | } |
| 232 | |
| 233 | /* setgid(2) */ |
| 234 | static inline abi_long do_bsd_setgid(abi_long arg1) |
| 235 | { |
| 236 | return get_errno(setgid(arg1)); |
| 237 | } |
| 238 | |
| 239 | /* setegid(2) */ |
| 240 | static inline abi_long do_bsd_setegid(abi_long arg1) |
| 241 | { |
| 242 | return get_errno(setegid(arg1)); |
| 243 | } |
| 244 | |
| 245 | /* getpgid(2) */ |
| 246 | static inline abi_long do_bsd_getpgid(pid_t pid) |
| 247 | { |
| 248 | return get_errno(getpgid(pid)); |
| 249 | } |
| 250 | |
| 251 | /* setpgid(2) */ |
| 252 | static inline abi_long do_bsd_setpgid(int pid, int pgrp) |
| 253 | { |
| 254 | return get_errno(setpgid(pid, pgrp)); |
| 255 | } |
| 256 | |
| 257 | /* getpgrp(2) */ |
| 258 | static inline abi_long do_bsd_getpgrp(void) |
| 259 | { |
| 260 | return get_errno(getpgrp()); |
| 261 | } |
| 262 | |
| 263 | /* setreuid(2) */ |
| 264 | static inline abi_long do_bsd_setreuid(abi_long arg1, abi_long arg2) |
| 265 | { |
| 266 | return get_errno(setreuid(arg1, arg2)); |
| 267 | } |
| 268 | |
| 269 | /* setregid(2) */ |
| 270 | static inline abi_long do_bsd_setregid(abi_long arg1, abi_long arg2) |
| 271 | { |
| 272 | return get_errno(setregid(arg1, arg2)); |
| 273 | } |
| 274 | |
| 275 | /* setresgid(2) */ |
| 276 | static inline abi_long do_bsd_setresgid(gid_t rgid, gid_t egid, gid_t sgid) |
| 277 | { |
| 278 | return get_errno(setresgid(rgid, egid, sgid)); |
| 279 | } |
| 280 | |
| 281 | /* setresuid(2) */ |
| 282 | static inline abi_long do_bsd_setresuid(uid_t ruid, uid_t euid, uid_t suid) |
| 283 | { |
| 284 | return get_errno(setresuid(ruid, euid, suid)); |
| 285 | } |
| 286 | |
| 287 | /* getresuid(2) */ |
| 288 | static inline abi_long do_bsd_getresuid(abi_ulong arg1, abi_ulong arg2, |
| 289 | abi_ulong arg3) |
| 290 | { |
| 291 | abi_long ret; |
| 292 | uid_t ruid, euid, suid; |
| 293 | |
| 294 | ret = get_errno(getresuid(&ruid, &euid, &suid)); |
| 295 | if (is_error(ret)) { |
| 296 | return ret; |
| 297 | } |
| 298 | if (put_user_s32(ruid, arg1)) { |
| 299 | return -TARGET_EFAULT; |
| 300 | } |
| 301 | if (put_user_s32(euid, arg2)) { |
| 302 | return -TARGET_EFAULT; |
| 303 | } |
| 304 | if (put_user_s32(suid, arg3)) { |
| 305 | return -TARGET_EFAULT; |
| 306 | } |
| 307 | return ret; |
| 308 | } |
| 309 | |
| 310 | /* getresgid(2) */ |
| 311 | static inline abi_long do_bsd_getresgid(abi_ulong arg1, abi_ulong arg2, |
| 312 | abi_ulong arg3) |
| 313 | { |
| 314 | abi_long ret; |
| 315 | uid_t ruid, euid, suid; |
| 316 | |
| 317 | ret = get_errno(getresgid(&ruid, &euid, &suid)); |
| 318 | if (is_error(ret)) { |
| 319 | return ret; |
| 320 | } |
| 321 | if (put_user_s32(ruid, arg1)) { |
| 322 | return -TARGET_EFAULT; |
| 323 | } |
| 324 | if (put_user_s32(euid, arg2)) { |
| 325 | return -TARGET_EFAULT; |
| 326 | } |
| 327 | if (put_user_s32(suid, arg3)) { |
| 328 | return -TARGET_EFAULT; |
| 329 | } |
| 330 | return ret; |
| 331 | } |
| 332 | |
| 333 | /* getsid(2) */ |
| 334 | static inline abi_long do_bsd_getsid(abi_long arg1) |
| 335 | { |
| 336 | return get_errno(getsid(arg1)); |
| 337 | } |
| 338 | |
| 339 | /* setsid(2) */ |
| 340 | static inline abi_long do_bsd_setsid(void) |
| 341 | { |
| 342 | return get_errno(setsid()); |
| 343 | } |
| 344 | |
| 345 | /* issetugid(2) */ |
| 346 | static inline abi_long do_bsd_issetugid(void) |
| 347 | { |
| 348 | return get_errno(issetugid()); |
| 349 | } |
| 350 | |
| 351 | /* profil(2) */ |
| 352 | static inline abi_long do_bsd_profil(abi_long arg1, abi_long arg2, |
| 353 | abi_long arg3, abi_long arg4) |
| 354 | { |
| 355 | return -TARGET_ENOSYS; |
| 356 | } |
| 357 | |
| 358 | /* ktrace(2) */ |
| 359 | static inline abi_long do_bsd_ktrace(abi_long arg1, abi_long arg2, |
| 360 | abi_long arg3, abi_long arg4) |
| 361 | { |
| 362 | return -TARGET_ENOSYS; |
| 363 | } |
| 364 | |
| 365 | /* utrace(2) */ |
| 366 | static inline abi_long do_bsd_utrace(abi_long arg1, abi_long arg2) |
| 367 | { |
| 368 | return -TARGET_ENOSYS; |
| 369 | } |
| 370 | |
| 371 | |
| 372 | /* ptrace(2) */ |
| 373 | static inline abi_long do_bsd_ptrace(abi_long arg1, abi_long arg2, |
| 374 | abi_long arg3, abi_long arg4) |
| 375 | { |
| 376 | return -TARGET_ENOSYS; |
| 377 | } |
| 378 | |
| 379 | /* getpriority(2) */ |
| 380 | static inline abi_long do_bsd_getpriority(abi_long which, abi_long who) |
| 381 | { |
| 382 | abi_long ret; |
| 383 | /* |
| 384 | * Note that negative values are valid for getpriority, so we must |
| 385 | * differentiate based on errno settings. |
| 386 | */ |
| 387 | errno = 0; |
| 388 | ret = getpriority(which, who); |
| 389 | if (ret == -1 && errno != 0) { |
| 390 | return -host_to_target_errno(errno); |
| 391 | } |
| 392 | |
| 393 | return ret; |
| 394 | } |
| 395 | |
| 396 | /* setpriority(2) */ |
| 397 | static inline abi_long do_bsd_setpriority(abi_long which, abi_long who, |
| 398 | abi_long prio) |
| 399 | { |
| 400 | return get_errno(setpriority(which, who, prio)); |
| 401 | } |
| 402 | |
| 403 | #endif /* !BSD_PROC_H_ */ |