1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2000 Dag-Erling Coïdan Smørgrav 5 * Copyright (c) 1999 Pierre Beyssac 6 * Copyright (c) 1993 Jan-Simon Pendry 7 * Copyright (c) 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * Jan-Simon Pendry. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 42 */ 43 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #include <sys/param.h> 48 #include <sys/queue.h> 49 #include <sys/blist.h> 50 #include <sys/conf.h> 51 #include <sys/exec.h> 52 #include <sys/fcntl.h> 53 #include <sys/filedesc.h> 54 #include <sys/jail.h> 55 #include <sys/kernel.h> 56 #include <sys/limits.h> 57 #include <sys/linker.h> 58 #include <sys/lock.h> 59 #include <sys/malloc.h> 60 #include <sys/msg.h> 61 #include <sys/mutex.h> 62 #include <sys/namei.h> 63 #include <sys/proc.h> 64 #include <sys/ptrace.h> 65 #include <sys/resourcevar.h> 66 #include <sys/resource.h> 67 #include <sys/sbuf.h> 68 #include <sys/sem.h> 69 #include <sys/shm.h> 70 #include <sys/smp.h> 71 #include <sys/socket.h> 72 #include <sys/syscallsubr.h> 73 #include <sys/sysctl.h> 74 #include <sys/sysent.h> 75 #include <sys/systm.h> 76 #include <sys/time.h> 77 #include <sys/tty.h> 78 #include <sys/user.h> 79 #include <sys/uuid.h> 80 #include <sys/vmmeter.h> 81 #include <sys/vnode.h> 82 #include <sys/bus.h> 83 #include <sys/uio.h> 84 85 #include <net/if.h> 86 #include <net/if_var.h> 87 #include <net/if_types.h> 88 89 #include <vm/vm.h> 90 #include <vm/vm_extern.h> 91 #include <vm/pmap.h> 92 #include <vm/vm_map.h> 93 #include <vm/vm_param.h> 94 #include <vm/vm_object.h> 95 #include <vm/swap_pager.h> 96 97 #include <machine/clock.h> 98 99 #include <geom/geom.h> 100 #include <geom/geom_int.h> 101 102 #if defined(__i386__) || defined(__amd64__) 103 #include <machine/cputypes.h> 104 #include <machine/md_var.h> 105 #endif /* __i386__ || __amd64__ */ 106 107 #include <compat/linux/linux.h> 108 #include <compat/linux/linux_emul.h> 109 #include <compat/linux/linux_mib.h> 110 #include <compat/linux/linux_misc.h> 111 #include <compat/linux/linux_util.h> 112 #include <fs/pseudofs/pseudofs.h> 113 #include <fs/procfs/procfs.h> 114 115 /* 116 * Various conversion macros 117 */ 118 #define T2J(x) ((long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to jiffies */ 119 #define T2CS(x) ((unsigned long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to centiseconds */ 120 #define T2S(x) ((x) / (stathz ? stathz : hz)) /* ticks to seconds */ 121 #define B2K(x) ((x) >> 10) /* bytes to kbytes */ 122 #define B2P(x) ((x) >> PAGE_SHIFT) /* bytes to pages */ 123 #define P2B(x) ((x) << PAGE_SHIFT) /* pages to bytes */ 124 #define P2K(x) ((x) << (PAGE_SHIFT - 10)) /* pages to kbytes */ 125 #define TV2J(x) ((x)->tv_sec * 100UL + (x)->tv_usec / 10000) 126 127 /** 128 * @brief Mapping of ki_stat in struct kinfo_proc to the linux state 129 * 130 * The linux procfs state field displays one of the characters RSDZTW to 131 * denote running, sleeping in an interruptible wait, waiting in an 132 * uninterruptible disk sleep, a zombie process, process is being traced 133 * or stopped, or process is paging respectively. 134 * 135 * Our struct kinfo_proc contains the variable ki_stat which contains a 136 * value out of SIDL, SRUN, SSLEEP, SSTOP, SZOMB, SWAIT and SLOCK. 137 * 138 * This character array is used with ki_stati-1 as an index and tries to 139 * map our states to suitable linux states. 140 */ 141 static char linux_state[] = "RRSTZDD"; 142 143 /* 144 * Filler function for proc/meminfo 145 */ 146 static int 147 linprocfs_domeminfo(PFS_FILL_ARGS) 148 { 149 unsigned long memtotal; /* total memory in bytes */ 150 unsigned long memfree; /* free memory in bytes */ 151 unsigned long cached; /* page cache */ 152 unsigned long buffers; /* buffer cache */ 153 unsigned long long swaptotal; /* total swap space in bytes */ 154 unsigned long long swapused; /* used swap space in bytes */ 155 unsigned long long swapfree; /* free swap space in bytes */ 156 size_t sz; 157 int error, i, j; 158 159 memtotal = physmem * PAGE_SIZE; 160 memfree = (unsigned long)vm_free_count() * PAGE_SIZE; 161 swap_pager_status(&i, &j); 162 swaptotal = (unsigned long long)i * PAGE_SIZE; 163 swapused = (unsigned long long)j * PAGE_SIZE; 164 swapfree = swaptotal - swapused; 165 166 /* 167 * This value may exclude wired pages, but we have no good way of 168 * accounting for that. 169 */ 170 cached = 171 (vm_active_count() + vm_inactive_count() + vm_laundry_count()) * 172 PAGE_SIZE; 173 174 sz = sizeof(buffers); 175 error = kernel_sysctlbyname(curthread, "vfs.bufspace", &buffers, &sz, 176 NULL, 0, 0, 0); 177 if (error != 0) 178 buffers = 0; 179 180 sbuf_printf(sb, 181 "MemTotal: %9lu kB\n" 182 "MemFree: %9lu kB\n" 183 "Buffers: %9lu kB\n" 184 "Cached: %9lu kB\n" 185 "SwapTotal:%9llu kB\n" 186 "SwapFree: %9llu kB\n", 187 B2K(memtotal), B2K(memfree), B2K(buffers), 188 B2K(cached), B2K(swaptotal), B2K(swapfree)); 189 190 return (0); 191 } 192 193 #if defined(__i386__) || defined(__amd64__) 194 /* 195 * Filler function for proc/cpuinfo (i386 & amd64 version) 196 */ 197 static int 198 linprocfs_docpuinfo(PFS_FILL_ARGS) 199 { 200 int hw_model[2]; 201 char model[128]; 202 uint64_t freq; 203 size_t size; 204 u_int cache_size[4]; 205 int fqmhz, fqkhz; 206 int i, j; 207 208 /* 209 * We default the flags to include all non-conflicting flags, 210 * and the Intel versions of conflicting flags. 211 */ 212 static char *cpu_feature_names[] = { 213 /* 0 */ "fpu", "vme", "de", "pse", 214 /* 4 */ "tsc", "msr", "pae", "mce", 215 /* 8 */ "cx8", "apic", "", "sep", 216 /* 12 */ "mtrr", "pge", "mca", "cmov", 217 /* 16 */ "pat", "pse36", "pn", "clflush", 218 /* 20 */ "", "dts", "acpi", "mmx", 219 /* 24 */ "fxsr", "sse", "sse2", "ss", 220 /* 28 */ "ht", "tm", "ia64", "pbe" 221 }; 222 223 static char *amd_feature_names[] = { 224 /* 0 */ "", "", "", "", 225 /* 4 */ "", "", "", "", 226 /* 8 */ "", "", "", "syscall", 227 /* 12 */ "", "", "", "", 228 /* 16 */ "", "", "", "mp", 229 /* 20 */ "nx", "", "mmxext", "", 230 /* 24 */ "", "fxsr_opt", "pdpe1gb", "rdtscp", 231 /* 28 */ "", "lm", "3dnowext", "3dnow" 232 }; 233 234 static char *cpu_feature2_names[] = { 235 /* 0 */ "pni", "pclmulqdq", "dtes64", "monitor", 236 /* 4 */ "ds_cpl", "vmx", "smx", "est", 237 /* 8 */ "tm2", "ssse3", "cid", "sdbg", 238 /* 12 */ "fma", "cx16", "xtpr", "pdcm", 239 /* 16 */ "", "pcid", "dca", "sse4_1", 240 /* 20 */ "sse4_2", "x2apic", "movbe", "popcnt", 241 /* 24 */ "tsc_deadline_timer", "aes", "xsave", "", 242 /* 28 */ "avx", "f16c", "rdrand", "hypervisor" 243 }; 244 245 static char *amd_feature2_names[] = { 246 /* 0 */ "lahf_lm", "cmp_legacy", "svm", "extapic", 247 /* 4 */ "cr8_legacy", "abm", "sse4a", "misalignsse", 248 /* 8 */ "3dnowprefetch", "osvw", "ibs", "xop", 249 /* 12 */ "skinit", "wdt", "", "lwp", 250 /* 16 */ "fma4", "tce", "", "nodeid_msr", 251 /* 20 */ "", "tbm", "topoext", "perfctr_core", 252 /* 24 */ "perfctr_nb", "", "bpext", "ptsc", 253 /* 28 */ "perfctr_llc", "mwaitx", "", "" 254 }; 255 256 static char *cpu_stdext_feature_names[] = { 257 /* 0 */ "fsgsbase", "tsc_adjust", "", "bmi1", 258 /* 4 */ "hle", "avx2", "", "smep", 259 /* 8 */ "bmi2", "erms", "invpcid", "rtm", 260 /* 12 */ "cqm", "", "mpx", "rdt_a", 261 /* 16 */ "avx512f", "avx512dq", "rdseed", "adx", 262 /* 20 */ "smap", "avx512ifma", "", "clflushopt", 263 /* 24 */ "clwb", "intel_pt", "avx512pf", "avx512er", 264 /* 28 */ "avx512cd", "sha_ni", "avx512bw", "avx512vl" 265 }; 266 267 static char *power_flags[] = { 268 "ts", "fid", "vid", 269 "ttp", "tm", "stc", 270 "100mhzsteps", "hwpstate", "", 271 "cpb", "eff_freq_ro", "proc_feedback", 272 "acc_power", 273 }; 274 275 hw_model[0] = CTL_HW; 276 hw_model[1] = HW_MODEL; 277 model[0] = '\0'; 278 size = sizeof(model); 279 if (kernel_sysctl(td, hw_model, 2, &model, &size, 0, 0, 0, 0) != 0) 280 strcpy(model, "unknown"); 281 #ifdef __i386__ 282 switch (cpu_vendor_id) { 283 case CPU_VENDOR_AMD: 284 if (cpu_class < CPUCLASS_686) 285 cpu_feature_names[16] = "fcmov"; 286 break; 287 case CPU_VENDOR_CYRIX: 288 cpu_feature_names[24] = "cxmmx"; 289 break; 290 } 291 #endif 292 if (cpu_exthigh >= 0x80000006) 293 do_cpuid(0x80000006, cache_size); 294 else 295 memset(cache_size, 0, sizeof(cache_size)); 296 for (i = 0; i < mp_ncpus; ++i) { 297 fqmhz = 0; 298 fqkhz = 0; 299 freq = atomic_load_acq_64(&tsc_freq); 300 if (freq != 0) { 301 fqmhz = (freq + 4999) / 1000000; 302 fqkhz = ((freq + 4999) / 10000) % 100; 303 } 304 sbuf_printf(sb, 305 "processor\t: %d\n" 306 "vendor_id\t: %.20s\n" 307 "cpu family\t: %u\n" 308 "model\t\t: %u\n" 309 "model name\t: %s\n" 310 "stepping\t: %u\n" 311 "cpu MHz\t\t: %d.%02d\n" 312 "cache size\t: %d KB\n" 313 "physical id\t: %d\n" 314 "siblings\t: %d\n" 315 "core id\t\t: %d\n" 316 "cpu cores\t: %d\n" 317 "apicid\t\t: %d\n" 318 "initial apicid\t: %d\n" 319 "fpu\t\t: %s\n" 320 "fpu_exception\t: %s\n" 321 "cpuid level\t: %d\n" 322 "wp\t\t: %s\n", 323 i, cpu_vendor, CPUID_TO_FAMILY(cpu_id), 324 CPUID_TO_MODEL(cpu_id), model, cpu_id & CPUID_STEPPING, 325 fqmhz, fqkhz, 326 (cache_size[2] >> 16), 0, mp_ncpus, i, mp_ncpus, 327 i, i, /*cpu_id & CPUID_LOCAL_APIC_ID ??*/ 328 (cpu_feature & CPUID_FPU) ? "yes" : "no", "yes", 329 CPUID_TO_FAMILY(cpu_id), "yes"); 330 sbuf_cat(sb, "flags\t\t:"); 331 for (j = 0; j < nitems(cpu_feature_names); j++) 332 if (cpu_feature & (1 << j) && 333 cpu_feature_names[j][0] != '\0') 334 sbuf_printf(sb, " %s", cpu_feature_names[j]); 335 for (j = 0; j < nitems(amd_feature_names); j++) 336 if (amd_feature & (1 << j) && 337 amd_feature_names[j][0] != '\0') 338 sbuf_printf(sb, " %s", amd_feature_names[j]); 339 for (j = 0; j < nitems(cpu_feature2_names); j++) 340 if (cpu_feature2 & (1 << j) && 341 cpu_feature2_names[j][0] != '\0') 342 sbuf_printf(sb, " %s", cpu_feature2_names[j]); 343 for (j = 0; j < nitems(amd_feature2_names); j++) 344 if (amd_feature2 & (1 << j) && 345 amd_feature2_names[j][0] != '\0') 346 sbuf_printf(sb, " %s", amd_feature2_names[j]); 347 for (j = 0; j < nitems(cpu_stdext_feature_names); j++) 348 if (cpu_stdext_feature & (1 << j) && 349 cpu_stdext_feature_names[j][0] != '\0') 350 sbuf_printf(sb, " %s", 351 cpu_stdext_feature_names[j]); 352 sbuf_cat(sb, "\n"); 353 sbuf_printf(sb, 354 "bugs\t\t: %s\n" 355 "bogomips\t: %d.%02d\n" 356 "clflush size\t: %d\n" 357 "cache_alignment\t: %d\n" 358 "address sizes\t: %d bits physical, %d bits virtual\n", 359 #if defined(I586_CPU) && !defined(NO_F00F_HACK) 360 (has_f00f_bug) ? "Intel F00F" : "", 361 #else 362 "", 363 #endif 364 fqmhz * 2, fqkhz, 365 cpu_clflush_line_size, cpu_clflush_line_size, 366 cpu_maxphyaddr, 367 (cpu_maxphyaddr > 32) ? 48 : 0); 368 sbuf_cat(sb, "power management: "); 369 for (j = 0; j < nitems(power_flags); j++) 370 if (amd_pminfo & (1 << j)) 371 sbuf_printf(sb, " %s", power_flags[j]); 372 sbuf_cat(sb, "\n\n"); 373 374 /* XXX per-cpu vendor / class / model / id? */ 375 } 376 sbuf_cat(sb, "\n"); 377 378 return (0); 379 } 380 #else 381 /* ARM64TODO: implement non-stubbed linprocfs_docpuinfo */ 382 static int 383 linprocfs_docpuinfo(PFS_FILL_ARGS) 384 { 385 int i; 386 387 for (i = 0; i < mp_ncpus; ++i) { 388 sbuf_printf(sb, 389 "processor\t: %d\n" 390 "BogoMIPS\t: %d.%02d\n", 391 i, 0, 0); 392 sbuf_cat(sb, "Features\t: "); 393 sbuf_cat(sb, "\n"); 394 sbuf_printf(sb, 395 "CPU implementer\t: \n" 396 "CPU architecture: \n" 397 "CPU variant\t: 0x%x\n" 398 "CPU part\t: 0x%x\n" 399 "CPU revision\t: %d\n", 400 0, 0, 0); 401 sbuf_cat(sb, "\n"); 402 } 403 404 return (0); 405 } 406 #endif /* __i386__ || __amd64__ */ 407 408 static const char *path_slash_sys = "/sys"; 409 static const char *fstype_sysfs = "sysfs"; 410 411 static int 412 _mtab_helper(const struct pfs_node *pn, const struct statfs *sp, 413 const char **mntfrom, const char **mntto, const char **fstype) 414 { 415 /* determine device name */ 416 *mntfrom = sp->f_mntfromname; 417 418 /* determine mount point */ 419 *mntto = sp->f_mntonname; 420 421 /* determine fs type */ 422 *fstype = sp->f_fstypename; 423 if (strcmp(*fstype, pn->pn_info->pi_name) == 0) 424 *mntfrom = *fstype = "proc"; 425 else if (strcmp(*fstype, "procfs") == 0) 426 return (ECANCELED); 427 428 if (strcmp(*fstype, "autofs") == 0) { 429 /* 430 * FreeBSD uses eg "map -hosts", whereas Linux 431 * expects just "-hosts". 432 */ 433 if (strncmp(*mntfrom, "map ", 4) == 0) 434 *mntfrom += 4; 435 } 436 437 if (strcmp(*fstype, "linsysfs") == 0) { 438 *mntfrom = path_slash_sys; 439 *fstype = fstype_sysfs; 440 } else { 441 /* For Linux msdosfs is called vfat */ 442 if (strcmp(*fstype, "msdosfs") == 0) 443 *fstype = "vfat"; 444 } 445 return (0); 446 } 447 448 static void 449 _sbuf_mntoptions_helper(struct sbuf *sb, uint64_t f_flags) 450 { 451 sbuf_cat(sb, (f_flags & MNT_RDONLY) ? "ro" : "rw"); 452 #define ADD_OPTION(opt, name) \ 453 if (f_flags & (opt)) sbuf_cat(sb, "," name); 454 ADD_OPTION(MNT_SYNCHRONOUS, "sync"); 455 ADD_OPTION(MNT_NOEXEC, "noexec"); 456 ADD_OPTION(MNT_NOSUID, "nosuid"); 457 ADD_OPTION(MNT_UNION, "union"); 458 ADD_OPTION(MNT_ASYNC, "async"); 459 ADD_OPTION(MNT_SUIDDIR, "suiddir"); 460 ADD_OPTION(MNT_NOSYMFOLLOW, "nosymfollow"); 461 ADD_OPTION(MNT_NOATIME, "noatime"); 462 #undef ADD_OPTION 463 } 464 465 /* 466 * Filler function for proc/mtab and proc/<pid>/mounts. 467 * 468 * /proc/mtab doesn't exist in Linux' procfs, but is included here so 469 * users can symlink /compat/linux/etc/mtab to /proc/mtab 470 */ 471 static int 472 linprocfs_domtab(PFS_FILL_ARGS) 473 { 474 struct nameidata nd; 475 const char *lep, *mntto, *mntfrom, *fstype; 476 char *dlep, *flep; 477 size_t lep_len; 478 int error; 479 struct statfs *buf, *sp; 480 size_t count; 481 482 /* resolve symlinks etc. in the emulation tree prefix */ 483 /* 484 * Ideally, this would use the current chroot rather than some 485 * hardcoded path. 486 */ 487 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, linux_emul_path); 488 flep = NULL; 489 error = namei(&nd); 490 lep = linux_emul_path; 491 if (error == 0) { 492 if (vn_fullpath(nd.ni_vp, &dlep, &flep) == 0) 493 lep = dlep; 494 vrele(nd.ni_vp); 495 } 496 lep_len = strlen(lep); 497 498 buf = NULL; 499 error = kern_getfsstat(td, &buf, SIZE_T_MAX, &count, 500 UIO_SYSSPACE, MNT_WAIT); 501 if (error != 0) { 502 free(buf, M_TEMP); 503 free(flep, M_TEMP); 504 return (error); 505 } 506 507 for (sp = buf; count > 0; sp++, count--) { 508 error = _mtab_helper(pn, sp, &mntfrom, &mntto, &fstype); 509 if (error != 0) { 510 MPASS(error == ECANCELED); 511 continue; 512 } 513 514 /* determine mount point */ 515 if (strncmp(mntto, lep, lep_len) == 0 && mntto[lep_len] == '/') 516 mntto += lep_len; 517 518 sbuf_printf(sb, "%s %s %s ", mntfrom, mntto, fstype); 519 _sbuf_mntoptions_helper(sb, sp->f_flags); 520 /* a real Linux mtab will also show NFS options */ 521 sbuf_printf(sb, " 0 0\n"); 522 } 523 524 free(buf, M_TEMP); 525 free(flep, M_TEMP); 526 return (error); 527 } 528 529 static int 530 linprocfs_doprocmountinfo(PFS_FILL_ARGS) 531 { 532 struct nameidata nd; 533 const char *mntfrom, *mntto, *fstype; 534 const char *lep; 535 char *dlep, *flep; 536 struct statfs *buf, *sp; 537 size_t count, lep_len; 538 int error; 539 540 /* 541 * Ideally, this would use the current chroot rather than some 542 * hardcoded path. 543 */ 544 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, linux_emul_path); 545 flep = NULL; 546 error = namei(&nd); 547 lep = linux_emul_path; 548 if (error == 0) { 549 if (vn_fullpath(nd.ni_vp, &dlep, &flep) == 0) 550 lep = dlep; 551 vrele(nd.ni_vp); 552 } 553 lep_len = strlen(lep); 554 555 buf = NULL; 556 error = kern_getfsstat(td, &buf, SIZE_T_MAX, &count, 557 UIO_SYSSPACE, MNT_WAIT); 558 if (error != 0) 559 goto out; 560 561 for (sp = buf; count > 0; sp++, count--) { 562 error = _mtab_helper(pn, sp, &mntfrom, &mntto, &fstype); 563 if (error != 0) { 564 MPASS(error == ECANCELED); 565 continue; 566 } 567 568 if (strncmp(mntto, lep, lep_len) == 0 && mntto[lep_len] == '/') 569 mntto += lep_len; 570 #if 0 571 /* 572 * If the prefix is a chroot, and this mountpoint is not under 573 * the prefix, we should skip it. Leave it for now for 574 * consistency with procmtab above. 575 */ 576 else 577 continue; 578 #endif 579 580 /* 581 * (1) mount id 582 * 583 * (2) parent mount id -- we don't have this cheaply, so 584 * provide a dummy value 585 * 586 * (3) major:minor -- ditto 587 * 588 * (4) root filesystem mount -- probably a namespaces thing 589 * 590 * (5) mountto path 591 */ 592 sbuf_printf(sb, "%u 0 0:0 / %s ", 593 sp->f_fsid.val[0] ^ sp->f_fsid.val[1], mntto); 594 /* (6) mount options */ 595 _sbuf_mntoptions_helper(sb, sp->f_flags); 596 /* 597 * (7) zero or more optional fields -- again, namespace related 598 * 599 * (8) End of variable length fields separator ("-") 600 * 601 * (9) fstype 602 * 603 * (10) mount from 604 * 605 * (11) "superblock" options -- like (6), but different 606 * semantics in Linux 607 */ 608 sbuf_printf(sb, " - %s %s %s\n", fstype, mntfrom, 609 (sp->f_flags & MNT_RDONLY) ? "ro" : "rw"); 610 } 611 612 error = 0; 613 out: 614 free(buf, M_TEMP); 615 free(flep, M_TEMP); 616 return (error); 617 } 618 619 /* 620 * Filler function for proc/partitions 621 */ 622 static int 623 linprocfs_dopartitions(PFS_FILL_ARGS) 624 { 625 struct g_class *cp; 626 struct g_geom *gp; 627 struct g_provider *pp; 628 int major, minor; 629 630 g_topology_lock(); 631 sbuf_printf(sb, "major minor #blocks name rio rmerge rsect " 632 "ruse wio wmerge wsect wuse running use aveq\n"); 633 634 LIST_FOREACH(cp, &g_classes, class) { 635 if (strcmp(cp->name, "DISK") == 0 || 636 strcmp(cp->name, "PART") == 0) 637 LIST_FOREACH(gp, &cp->geom, geom) { 638 LIST_FOREACH(pp, &gp->provider, provider) { 639 if (linux_driver_get_major_minor( 640 pp->name, &major, &minor) != 0) { 641 major = 0; 642 minor = 0; 643 } 644 sbuf_printf(sb, "%d %d %lld %s " 645 "%d %d %d %d %d " 646 "%d %d %d %d %d %d\n", 647 major, minor, 648 (long long)pp->mediasize, pp->name, 649 0, 0, 0, 0, 0, 650 0, 0, 0, 0, 0, 0); 651 } 652 } 653 } 654 g_topology_unlock(); 655 656 return (0); 657 } 658 659 /* 660 * Filler function for proc/stat 661 * 662 * Output depends on kernel version: 663 * 664 * v2.5.40 <= 665 * user nice system idle 666 * v2.5.41 667 * user nice system idle iowait 668 * v2.6.11 669 * user nice system idle iowait irq softirq steal 670 * v2.6.24 671 * user nice system idle iowait irq softirq steal guest 672 * v2.6.33 >= 673 * user nice system idle iowait irq softirq steal guest guest_nice 674 */ 675 static int 676 linprocfs_dostat(PFS_FILL_ARGS) 677 { 678 struct pcpu *pcpu; 679 long cp_time[CPUSTATES]; 680 long *cp; 681 struct timeval boottime; 682 int i; 683 char *zero_pad; 684 bool has_intr = true; 685 686 if (linux_kernver(td) >= LINUX_KERNVER(2,6,33)) { 687 zero_pad = " 0 0 0 0\n"; 688 } else if (linux_kernver(td) >= LINUX_KERNVER(2,6,24)) { 689 zero_pad = " 0 0 0\n"; 690 } else if (linux_kernver(td) >= LINUX_KERNVER(2,6,11)) { 691 zero_pad = " 0 0\n"; 692 } else if (linux_kernver(td) >= LINUX_KERNVER(2,5,41)) { 693 has_intr = false; 694 zero_pad = " 0\n"; 695 } else { 696 has_intr = false; 697 zero_pad = "\n"; 698 } 699 700 read_cpu_time(cp_time); 701 getboottime(&boottime); 702 /* Parameters common to all versions */ 703 sbuf_printf(sb, "cpu %lu %lu %lu %lu", 704 T2J(cp_time[CP_USER]), 705 T2J(cp_time[CP_NICE]), 706 T2J(cp_time[CP_SYS]), 707 T2J(cp_time[CP_IDLE])); 708 709 /* Print interrupt stats if available */ 710 if (has_intr) { 711 sbuf_printf(sb, " 0 %lu", T2J(cp_time[CP_INTR])); 712 } 713 714 /* Pad out remaining fields depending on version */ 715 sbuf_printf(sb, "%s", zero_pad); 716 717 CPU_FOREACH(i) { 718 pcpu = pcpu_find(i); 719 cp = pcpu->pc_cp_time; 720 sbuf_printf(sb, "cpu%d %lu %lu %lu %lu", i, 721 T2J(cp[CP_USER]), 722 T2J(cp[CP_NICE]), 723 T2J(cp[CP_SYS]), 724 T2J(cp[CP_IDLE])); 725 726 if (has_intr) { 727 sbuf_printf(sb, " 0 %lu", T2J(cp[CP_INTR])); 728 } 729 730 sbuf_printf(sb, "%s", zero_pad); 731 } 732 sbuf_printf(sb, 733 "disk 0 0 0 0\n" 734 "page %ju %ju\n" 735 "swap %ju %ju\n" 736 "intr %ju\n" 737 "ctxt %ju\n" 738 "btime %lld\n", 739 (uintmax_t)VM_CNT_FETCH(v_vnodepgsin), 740 (uintmax_t)VM_CNT_FETCH(v_vnodepgsout), 741 (uintmax_t)VM_CNT_FETCH(v_swappgsin), 742 (uintmax_t)VM_CNT_FETCH(v_swappgsout), 743 (uintmax_t)VM_CNT_FETCH(v_intr), 744 (uintmax_t)VM_CNT_FETCH(v_swtch), 745 (long long)boottime.tv_sec); 746 return (0); 747 } 748 749 static int 750 linprocfs_doswaps(PFS_FILL_ARGS) 751 { 752 struct xswdev xsw; 753 uintmax_t total, used; 754 int n; 755 char devname[SPECNAMELEN + 1]; 756 757 sbuf_printf(sb, "Filename\t\t\t\tType\t\tSize\tUsed\tPriority\n"); 758 for (n = 0; ; n++) { 759 if (swap_dev_info(n, &xsw, devname, sizeof(devname)) != 0) 760 break; 761 total = (uintmax_t)xsw.xsw_nblks * PAGE_SIZE / 1024; 762 used = (uintmax_t)xsw.xsw_used * PAGE_SIZE / 1024; 763 764 /* 765 * The space and not tab after the device name is on 766 * purpose. Linux does so. 767 */ 768 sbuf_printf(sb, "/dev/%-34s unknown\t\t%jd\t%jd\t-1\n", 769 devname, total, used); 770 } 771 return (0); 772 } 773 774 /* 775 * Filler function for proc/uptime 776 */ 777 static int 778 linprocfs_douptime(PFS_FILL_ARGS) 779 { 780 long cp_time[CPUSTATES]; 781 struct timeval tv; 782 783 getmicrouptime(&tv); 784 read_cpu_time(cp_time); 785 sbuf_printf(sb, "%lld.%02ld %ld.%02lu\n", 786 (long long)tv.tv_sec, tv.tv_usec / 10000, 787 T2S(cp_time[CP_IDLE] / mp_ncpus), 788 T2CS(cp_time[CP_IDLE] / mp_ncpus) % 100); 789 return (0); 790 } 791 792 /* 793 * Get OS build date 794 */ 795 static void 796 linprocfs_osbuild(struct thread *td, struct sbuf *sb) 797 { 798 #if 0 799 char osbuild[256]; 800 char *cp1, *cp2; 801 802 strncpy(osbuild, version, 256); 803 osbuild[255] = '\0'; 804 cp1 = strstr(osbuild, "\n"); 805 cp2 = strstr(osbuild, ":"); 806 if (cp1 && cp2) { 807 *cp1 = *cp2 = '\0'; 808 cp1 = strstr(osbuild, "#"); 809 } else 810 cp1 = NULL; 811 if (cp1) 812 sbuf_printf(sb, "%s%s", cp1, cp2 + 1); 813 else 814 #endif 815 sbuf_cat(sb, "#4 Sun Dec 18 04:30:00 CET 1977"); 816 } 817 818 /* 819 * Get OS builder 820 */ 821 static void 822 linprocfs_osbuilder(struct thread *td, struct sbuf *sb) 823 { 824 #if 0 825 char builder[256]; 826 char *cp; 827 828 cp = strstr(version, "\n "); 829 if (cp) { 830 strncpy(builder, cp + 5, 256); 831 builder[255] = '\0'; 832 cp = strstr(builder, ":"); 833 if (cp) 834 *cp = '\0'; 835 } 836 if (cp) 837 sbuf_cat(sb, builder); 838 else 839 #endif 840 sbuf_cat(sb, "des@freebsd.org"); 841 } 842 843 /* 844 * Filler function for proc/version 845 */ 846 static int 847 linprocfs_doversion(PFS_FILL_ARGS) 848 { 849 char osname[LINUX_MAX_UTSNAME]; 850 char osrelease[LINUX_MAX_UTSNAME]; 851 852 linux_get_osname(td, osname); 853 linux_get_osrelease(td, osrelease); 854 sbuf_printf(sb, "%s version %s (", osname, osrelease); 855 linprocfs_osbuilder(td, sb); 856 sbuf_cat(sb, ") (gcc version " __VERSION__ ") "); 857 linprocfs_osbuild(td, sb); 858 sbuf_cat(sb, "\n"); 859 860 return (0); 861 } 862 863 /* 864 * Filler function for proc/loadavg 865 */ 866 static int 867 linprocfs_doloadavg(PFS_FILL_ARGS) 868 { 869 870 sbuf_printf(sb, 871 "%d.%02d %d.%02d %d.%02d %d/%d %d\n", 872 (int)(averunnable.ldavg[0] / averunnable.fscale), 873 (int)(averunnable.ldavg[0] * 100 / averunnable.fscale % 100), 874 (int)(averunnable.ldavg[1] / averunnable.fscale), 875 (int)(averunnable.ldavg[1] * 100 / averunnable.fscale % 100), 876 (int)(averunnable.ldavg[2] / averunnable.fscale), 877 (int)(averunnable.ldavg[2] * 100 / averunnable.fscale % 100), 878 1, /* number of running tasks */ 879 nprocs, /* number of tasks */ 880 lastpid /* the last pid */ 881 ); 882 return (0); 883 } 884 885 static int 886 linprocfs_get_tty_nr(struct proc *p) 887 { 888 struct session *sp; 889 const char *ttyname; 890 int error, major, minor, nr; 891 892 PROC_LOCK_ASSERT(p, MA_OWNED); 893 sx_assert(&proctree_lock, SX_LOCKED); 894 895 if ((p->p_flag & P_CONTROLT) == 0) 896 return (-1); 897 898 sp = p->p_pgrp->pg_session; 899 if (sp == NULL) 900 return (-1); 901 902 ttyname = devtoname(sp->s_ttyp->t_dev); 903 error = linux_driver_get_major_minor(ttyname, &major, &minor); 904 if (error != 0) 905 return (-1); 906 907 nr = makedev(major, minor); 908 return (nr); 909 } 910 911 /* 912 * Filler function for proc/pid/stat 913 */ 914 static int 915 linprocfs_doprocstat(PFS_FILL_ARGS) 916 { 917 struct kinfo_proc kp; 918 struct timeval boottime; 919 char state; 920 static int ratelimit = 0; 921 int tty_nr; 922 vm_offset_t startcode, startdata; 923 924 getboottime(&boottime); 925 sx_slock(&proctree_lock); 926 PROC_LOCK(p); 927 fill_kinfo_proc(p, &kp); 928 tty_nr = linprocfs_get_tty_nr(p); 929 sx_sunlock(&proctree_lock); 930 if (p->p_vmspace) { 931 startcode = (vm_offset_t)p->p_vmspace->vm_taddr; 932 startdata = (vm_offset_t)p->p_vmspace->vm_daddr; 933 } else { 934 startcode = 0; 935 startdata = 0; 936 } 937 sbuf_printf(sb, "%d", p->p_pid); 938 #define PS_ADD(name, fmt, arg) sbuf_printf(sb, " " fmt, arg) 939 PS_ADD("comm", "(%s)", p->p_comm); 940 if (kp.ki_stat > sizeof(linux_state)) { 941 state = 'R'; 942 943 if (ratelimit == 0) { 944 printf("linprocfs: don't know how to handle unknown FreeBSD state %d/%zd, mapping to R\n", 945 kp.ki_stat, sizeof(linux_state)); 946 ++ratelimit; 947 } 948 } else 949 state = linux_state[kp.ki_stat - 1]; 950 PS_ADD("state", "%c", state); 951 PS_ADD("ppid", "%d", p->p_pptr ? p->p_pptr->p_pid : 0); 952 PS_ADD("pgrp", "%d", p->p_pgid); 953 PS_ADD("session", "%d", p->p_session->s_sid); 954 PROC_UNLOCK(p); 955 PS_ADD("tty", "%d", tty_nr); 956 PS_ADD("tpgid", "%d", kp.ki_tpgid); 957 PS_ADD("flags", "%u", 0); /* XXX */ 958 PS_ADD("minflt", "%lu", kp.ki_rusage.ru_minflt); 959 PS_ADD("cminflt", "%lu", kp.ki_rusage_ch.ru_minflt); 960 PS_ADD("majflt", "%lu", kp.ki_rusage.ru_majflt); 961 PS_ADD("cmajflt", "%lu", kp.ki_rusage_ch.ru_majflt); 962 PS_ADD("utime", "%ld", TV2J(&kp.ki_rusage.ru_utime)); 963 PS_ADD("stime", "%ld", TV2J(&kp.ki_rusage.ru_stime)); 964 PS_ADD("cutime", "%ld", TV2J(&kp.ki_rusage_ch.ru_utime)); 965 PS_ADD("cstime", "%ld", TV2J(&kp.ki_rusage_ch.ru_stime)); 966 PS_ADD("priority", "%d", kp.ki_pri.pri_user); 967 PS_ADD("nice", "%d", kp.ki_nice); /* 19 (nicest) to -19 */ 968 PS_ADD("0", "%d", 0); /* removed field */ 969 PS_ADD("itrealvalue", "%d", 0); /* XXX */ 970 PS_ADD("starttime", "%lu", TV2J(&kp.ki_start) - TV2J(&boottime)); 971 PS_ADD("vsize", "%ju", P2K((uintmax_t)kp.ki_size)); 972 PS_ADD("rss", "%ju", (uintmax_t)kp.ki_rssize); 973 PS_ADD("rlim", "%lu", kp.ki_rusage.ru_maxrss); 974 PS_ADD("startcode", "%ju", (uintmax_t)startcode); 975 PS_ADD("endcode", "%ju", (uintmax_t)startdata); 976 PS_ADD("startstack", "%u", 0); /* XXX */ 977 PS_ADD("kstkesp", "%u", 0); /* XXX */ 978 PS_ADD("kstkeip", "%u", 0); /* XXX */ 979 PS_ADD("signal", "%u", 0); /* XXX */ 980 PS_ADD("blocked", "%u", 0); /* XXX */ 981 PS_ADD("sigignore", "%u", 0); /* XXX */ 982 PS_ADD("sigcatch", "%u", 0); /* XXX */ 983 PS_ADD("wchan", "%u", 0); /* XXX */ 984 PS_ADD("nswap", "%lu", kp.ki_rusage.ru_nswap); 985 PS_ADD("cnswap", "%lu", kp.ki_rusage_ch.ru_nswap); 986 PS_ADD("exitsignal", "%d", 0); /* XXX */ 987 PS_ADD("processor", "%u", kp.ki_lastcpu); 988 PS_ADD("rt_priority", "%u", 0); /* XXX */ /* >= 2.5.19 */ 989 PS_ADD("policy", "%u", kp.ki_pri.pri_class); /* >= 2.5.19 */ 990 #undef PS_ADD 991 sbuf_putc(sb, '\n'); 992 993 return (0); 994 } 995 996 /* 997 * Filler function for proc/pid/statm 998 */ 999 static int 1000 linprocfs_doprocstatm(PFS_FILL_ARGS) 1001 { 1002 struct kinfo_proc kp; 1003 segsz_t lsize; 1004 1005 sx_slock(&proctree_lock); 1006 PROC_LOCK(p); 1007 fill_kinfo_proc(p, &kp); 1008 PROC_UNLOCK(p); 1009 sx_sunlock(&proctree_lock); 1010 1011 /* 1012 * See comments in linprocfs_doprocstatus() regarding the 1013 * computation of lsize. 1014 */ 1015 /* size resident share trs drs lrs dt */ 1016 sbuf_printf(sb, "%ju ", B2P((uintmax_t)kp.ki_size)); 1017 sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_rssize); 1018 sbuf_printf(sb, "%ju ", (uintmax_t)0); /* XXX */ 1019 sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_tsize); 1020 sbuf_printf(sb, "%ju ", (uintmax_t)(kp.ki_dsize + kp.ki_ssize)); 1021 lsize = B2P(kp.ki_size) - kp.ki_dsize - 1022 kp.ki_ssize - kp.ki_tsize - 1; 1023 sbuf_printf(sb, "%ju ", (uintmax_t)lsize); 1024 sbuf_printf(sb, "%ju\n", (uintmax_t)0); /* XXX */ 1025 1026 return (0); 1027 } 1028 1029 /* 1030 * Filler function for proc/pid/status 1031 */ 1032 static int 1033 linprocfs_doprocstatus(PFS_FILL_ARGS) 1034 { 1035 struct kinfo_proc kp; 1036 char *state; 1037 segsz_t lsize; 1038 struct thread *td2; 1039 struct sigacts *ps; 1040 l_sigset_t siglist, sigignore, sigcatch; 1041 int i; 1042 1043 sx_slock(&proctree_lock); 1044 PROC_LOCK(p); 1045 td2 = FIRST_THREAD_IN_PROC(p); 1046 1047 if (P_SHOULDSTOP(p)) { 1048 state = "T (stopped)"; 1049 } else { 1050 switch(p->p_state) { 1051 case PRS_NEW: 1052 state = "I (idle)"; 1053 break; 1054 case PRS_NORMAL: 1055 if (p->p_flag & P_WEXIT) { 1056 state = "X (exiting)"; 1057 break; 1058 } 1059 switch(TD_GET_STATE(td2)) { 1060 case TDS_INHIBITED: 1061 state = "S (sleeping)"; 1062 break; 1063 case TDS_RUNQ: 1064 case TDS_RUNNING: 1065 state = "R (running)"; 1066 break; 1067 default: 1068 state = "? (unknown)"; 1069 break; 1070 } 1071 break; 1072 case PRS_ZOMBIE: 1073 state = "Z (zombie)"; 1074 break; 1075 default: 1076 state = "? (unknown)"; 1077 break; 1078 } 1079 } 1080 1081 fill_kinfo_proc(p, &kp); 1082 sx_sunlock(&proctree_lock); 1083 1084 sbuf_printf(sb, "Name:\t%s\n", p->p_comm); /* XXX escape */ 1085 sbuf_printf(sb, "State:\t%s\n", state); 1086 1087 /* 1088 * Credentials 1089 */ 1090 sbuf_printf(sb, "Tgid:\t%d\n", p->p_pid); 1091 sbuf_printf(sb, "Pid:\t%d\n", p->p_pid); 1092 sbuf_printf(sb, "PPid:\t%d\n", kp.ki_ppid ); 1093 sbuf_printf(sb, "TracerPid:\t%d\n", kp.ki_tracer ); 1094 sbuf_printf(sb, "Uid:\t%d\t%d\t%d\t%d\n", p->p_ucred->cr_ruid, 1095 p->p_ucred->cr_uid, 1096 p->p_ucred->cr_svuid, 1097 /* FreeBSD doesn't have fsuid */ 1098 p->p_ucred->cr_uid); 1099 sbuf_printf(sb, "Gid:\t%d\t%d\t%d\t%d\n", p->p_ucred->cr_rgid, 1100 p->p_ucred->cr_gid, 1101 p->p_ucred->cr_svgid, 1102 /* FreeBSD doesn't have fsgid */ 1103 p->p_ucred->cr_gid); 1104 sbuf_cat(sb, "Groups:\t"); 1105 for (i = 0; i < p->p_ucred->cr_ngroups; i++) 1106 sbuf_printf(sb, "%d ", p->p_ucred->cr_groups[i]); 1107 PROC_UNLOCK(p); 1108 sbuf_putc(sb, '\n'); 1109 1110 /* 1111 * Memory 1112 * 1113 * While our approximation of VmLib may not be accurate (I 1114 * don't know of a simple way to verify it, and I'm not sure 1115 * it has much meaning anyway), I believe it's good enough. 1116 * 1117 * The same code that could (I think) accurately compute VmLib 1118 * could also compute VmLck, but I don't really care enough to 1119 * implement it. Submissions are welcome. 1120 */ 1121 sbuf_printf(sb, "VmSize:\t%8ju kB\n", B2K((uintmax_t)kp.ki_size)); 1122 sbuf_printf(sb, "VmLck:\t%8u kB\n", P2K(0)); /* XXX */ 1123 sbuf_printf(sb, "VmRSS:\t%8ju kB\n", P2K((uintmax_t)kp.ki_rssize)); 1124 sbuf_printf(sb, "VmData:\t%8ju kB\n", P2K((uintmax_t)kp.ki_dsize)); 1125 sbuf_printf(sb, "VmStk:\t%8ju kB\n", P2K((uintmax_t)kp.ki_ssize)); 1126 sbuf_printf(sb, "VmExe:\t%8ju kB\n", P2K((uintmax_t)kp.ki_tsize)); 1127 lsize = B2P(kp.ki_size) - kp.ki_dsize - 1128 kp.ki_ssize - kp.ki_tsize - 1; 1129 sbuf_printf(sb, "VmLib:\t%8ju kB\n", P2K((uintmax_t)lsize)); 1130 1131 /* 1132 * Signal masks 1133 */ 1134 PROC_LOCK(p); 1135 bsd_to_linux_sigset(&p->p_siglist, &siglist); 1136 ps = p->p_sigacts; 1137 mtx_lock(&ps->ps_mtx); 1138 bsd_to_linux_sigset(&ps->ps_sigignore, &sigignore); 1139 bsd_to_linux_sigset(&ps->ps_sigcatch, &sigcatch); 1140 mtx_unlock(&ps->ps_mtx); 1141 PROC_UNLOCK(p); 1142 1143 sbuf_printf(sb, "SigPnd:\t%016jx\n", siglist.__mask); 1144 /* 1145 * XXX. SigBlk - target thread's signal mask, td_sigmask. 1146 * To implement SigBlk pseudofs should support proc/tid dir entries. 1147 */ 1148 sbuf_printf(sb, "SigBlk:\t%016x\n", 0); 1149 sbuf_printf(sb, "SigIgn:\t%016jx\n", sigignore.__mask); 1150 sbuf_printf(sb, "SigCgt:\t%016jx\n", sigcatch.__mask); 1151 1152 /* 1153 * Linux also prints the capability masks, but we don't have 1154 * capabilities yet, and when we do get them they're likely to 1155 * be meaningless to Linux programs, so we lie. XXX 1156 */ 1157 sbuf_printf(sb, "CapInh:\t%016x\n", 0); 1158 sbuf_printf(sb, "CapPrm:\t%016x\n", 0); 1159 sbuf_printf(sb, "CapEff:\t%016x\n", 0); 1160 1161 return (0); 1162 } 1163 1164 /* 1165 * Filler function for proc/pid/cwd 1166 */ 1167 static int 1168 linprocfs_doproccwd(PFS_FILL_ARGS) 1169 { 1170 struct pwd *pwd; 1171 char *fullpath = "unknown"; 1172 char *freepath = NULL; 1173 1174 pwd = pwd_hold_proc(p); 1175 vn_fullpath(pwd->pwd_cdir, &fullpath, &freepath); 1176 sbuf_printf(sb, "%s", fullpath); 1177 if (freepath) 1178 free(freepath, M_TEMP); 1179 pwd_drop(pwd); 1180 return (0); 1181 } 1182 1183 /* 1184 * Filler function for proc/pid/root 1185 */ 1186 static int 1187 linprocfs_doprocroot(PFS_FILL_ARGS) 1188 { 1189 struct pwd *pwd; 1190 struct vnode *vp; 1191 char *fullpath = "unknown"; 1192 char *freepath = NULL; 1193 1194 pwd = pwd_hold_proc(p); 1195 vp = jailed(p->p_ucred) ? pwd->pwd_jdir : pwd->pwd_rdir; 1196 vn_fullpath(vp, &fullpath, &freepath); 1197 sbuf_printf(sb, "%s", fullpath); 1198 if (freepath) 1199 free(freepath, M_TEMP); 1200 pwd_drop(pwd); 1201 return (0); 1202 } 1203 1204 /* 1205 * Filler function for proc/pid/cmdline 1206 */ 1207 static int 1208 linprocfs_doproccmdline(PFS_FILL_ARGS) 1209 { 1210 int ret; 1211 1212 PROC_LOCK(p); 1213 if ((ret = p_cansee(td, p)) != 0) { 1214 PROC_UNLOCK(p); 1215 return (ret); 1216 } 1217 1218 /* 1219 * Mimic linux behavior and pass only processes with usermode 1220 * address space as valid. Return zero silently otherwize. 1221 */ 1222 if (p->p_vmspace == &vmspace0) { 1223 PROC_UNLOCK(p); 1224 return (0); 1225 } 1226 if (p->p_args != NULL) { 1227 sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length); 1228 PROC_UNLOCK(p); 1229 return (0); 1230 } 1231 1232 if ((p->p_flag & P_SYSTEM) != 0) { 1233 PROC_UNLOCK(p); 1234 return (0); 1235 } 1236 1237 PROC_UNLOCK(p); 1238 1239 ret = proc_getargv(td, p, sb); 1240 return (ret); 1241 } 1242 1243 /* 1244 * Filler function for proc/pid/environ 1245 */ 1246 static int 1247 linprocfs_doprocenviron(PFS_FILL_ARGS) 1248 { 1249 1250 /* 1251 * Mimic linux behavior and pass only processes with usermode 1252 * address space as valid. Return zero silently otherwize. 1253 */ 1254 if (p->p_vmspace == &vmspace0) 1255 return (0); 1256 1257 return (proc_getenvv(td, p, sb)); 1258 } 1259 1260 static char l32_map_str[] = "%08lx-%08lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n"; 1261 static char l64_map_str[] = "%016lx-%016lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n"; 1262 static char vdso_str[] = " [vdso]"; 1263 static char stack_str[] = " [stack]"; 1264 1265 /* 1266 * Filler function for proc/pid/maps 1267 */ 1268 static int 1269 linprocfs_doprocmaps(PFS_FILL_ARGS) 1270 { 1271 struct vmspace *vm; 1272 vm_map_t map; 1273 vm_map_entry_t entry, tmp_entry; 1274 vm_object_t obj, tobj, lobj; 1275 vm_offset_t e_start, e_end; 1276 vm_ooffset_t off; 1277 vm_prot_t e_prot; 1278 unsigned int last_timestamp; 1279 char *name = "", *freename = NULL; 1280 const char *l_map_str; 1281 ino_t ino; 1282 int error; 1283 struct vnode *vp; 1284 struct vattr vat; 1285 bool private; 1286 1287 PROC_LOCK(p); 1288 error = p_candebug(td, p); 1289 PROC_UNLOCK(p); 1290 if (error) 1291 return (error); 1292 1293 if (uio->uio_rw != UIO_READ) 1294 return (EOPNOTSUPP); 1295 1296 error = 0; 1297 vm = vmspace_acquire_ref(p); 1298 if (vm == NULL) 1299 return (ESRCH); 1300 1301 if (SV_CURPROC_FLAG(SV_LP64)) 1302 l_map_str = l64_map_str; 1303 else 1304 l_map_str = l32_map_str; 1305 map = &vm->vm_map; 1306 vm_map_lock_read(map); 1307 VM_MAP_ENTRY_FOREACH(entry, map) { 1308 name = ""; 1309 freename = NULL; 1310 /* 1311 * Skip printing of the guard page of the stack region, as 1312 * it confuses glibc pthread_getattr_np() method, where both 1313 * the base address and size of the stack of the initial thread 1314 * are calculated. 1315 */ 1316 if ((entry->eflags & (MAP_ENTRY_IS_SUB_MAP | MAP_ENTRY_GUARD)) != 0) 1317 continue; 1318 e_prot = entry->protection; 1319 e_start = entry->start; 1320 e_end = entry->end; 1321 obj = entry->object.vm_object; 1322 off = entry->offset; 1323 for (lobj = tobj = obj; tobj != NULL; 1324 lobj = tobj, tobj = tobj->backing_object) { 1325 VM_OBJECT_RLOCK(tobj); 1326 off += lobj->backing_object_offset; 1327 if (lobj != obj) 1328 VM_OBJECT_RUNLOCK(lobj); 1329 } 1330 private = (entry->eflags & MAP_ENTRY_COW) != 0 || obj == NULL || 1331 (obj->flags & OBJ_ANON) != 0; 1332 last_timestamp = map->timestamp; 1333 vm_map_unlock_read(map); 1334 ino = 0; 1335 if (lobj) { 1336 vp = vm_object_vnode(lobj); 1337 if (vp != NULL) 1338 vref(vp); 1339 if (lobj != obj) 1340 VM_OBJECT_RUNLOCK(lobj); 1341 VM_OBJECT_RUNLOCK(obj); 1342 if (vp != NULL) { 1343 vn_fullpath(vp, &name, &freename); 1344 vn_lock(vp, LK_SHARED | LK_RETRY); 1345 VOP_GETATTR(vp, &vat, td->td_ucred); 1346 ino = vat.va_fileid; 1347 vput(vp); 1348 } else if (SV_PROC_ABI(p) == SV_ABI_LINUX) { 1349 /* 1350 * sv_shared_page_base pointed out to the 1351 * FreeBSD sharedpage, PAGE_SIZE is a size 1352 * of it. The vDSO page is above. 1353 */ 1354 if (e_start == p->p_sysent->sv_shared_page_base + 1355 PAGE_SIZE) 1356 name = vdso_str; 1357 if (e_end == p->p_sysent->sv_usrstack) 1358 name = stack_str; 1359 } 1360 } 1361 1362 /* 1363 * format: 1364 * start, end, access, offset, major, minor, inode, name. 1365 */ 1366 error = sbuf_printf(sb, l_map_str, 1367 (u_long)e_start, (u_long)e_end, 1368 (e_prot & VM_PROT_READ)?"r":"-", 1369 (e_prot & VM_PROT_WRITE)?"w":"-", 1370 (e_prot & VM_PROT_EXECUTE)?"x":"-", 1371 private ? "p" : "s", 1372 (u_long)off, 1373 0, 1374 0, 1375 (u_long)ino, 1376 *name ? " " : " ", 1377 name 1378 ); 1379 if (freename) 1380 free(freename, M_TEMP); 1381 vm_map_lock_read(map); 1382 if (error == -1) { 1383 error = 0; 1384 break; 1385 } 1386 if (last_timestamp != map->timestamp) { 1387 /* 1388 * Look again for the entry because the map was 1389 * modified while it was unlocked. Specifically, 1390 * the entry may have been clipped, merged, or deleted. 1391 */ 1392 vm_map_lookup_entry(map, e_end - 1, &tmp_entry); 1393 entry = tmp_entry; 1394 } 1395 } 1396 vm_map_unlock_read(map); 1397 vmspace_free(vm); 1398 1399 return (error); 1400 } 1401 1402 /* 1403 * Filler function for proc/pid/mem 1404 */ 1405 static int 1406 linprocfs_doprocmem(PFS_FILL_ARGS) 1407 { 1408 ssize_t resid; 1409 int error; 1410 1411 resid = uio->uio_resid; 1412 error = procfs_doprocmem(PFS_FILL_ARGNAMES); 1413 1414 if (uio->uio_rw == UIO_READ && resid != uio->uio_resid) 1415 return (0); 1416 1417 if (error == EFAULT) 1418 error = EIO; 1419 1420 return (error); 1421 } 1422 1423 static int 1424 linux_ifname(struct ifnet *ifp, char *buffer, size_t buflen) 1425 { 1426 struct ifnet *ifscan; 1427 int ethno; 1428 1429 IFNET_RLOCK_ASSERT(); 1430 1431 /* Short-circuit non ethernet interfaces */ 1432 if (linux_use_real_ifname(ifp)) 1433 return (strlcpy(buffer, ifp->if_xname, buflen)); 1434 1435 /* Determine the (relative) unit number for ethernet interfaces */ 1436 ethno = 0; 1437 CK_STAILQ_FOREACH(ifscan, &V_ifnet, if_link) { 1438 if (ifscan == ifp) 1439 return (snprintf(buffer, buflen, "eth%d", ethno)); 1440 if (!linux_use_real_ifname(ifscan)) 1441 ethno++; 1442 } 1443 1444 return (0); 1445 } 1446 1447 /* 1448 * Filler function for proc/net/dev 1449 */ 1450 static int 1451 linprocfs_donetdev(PFS_FILL_ARGS) 1452 { 1453 char ifname[16]; /* XXX LINUX_IFNAMSIZ */ 1454 struct ifnet *ifp; 1455 1456 sbuf_printf(sb, "%6s|%58s|%s\n" 1457 "%6s|%58s|%58s\n", 1458 "Inter-", " Receive", " Transmit", 1459 " face", 1460 "bytes packets errs drop fifo frame compressed multicast", 1461 "bytes packets errs drop fifo colls carrier compressed"); 1462 1463 CURVNET_SET(TD_TO_VNET(curthread)); 1464 IFNET_RLOCK(); 1465 CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1466 linux_ifname(ifp, ifname, sizeof ifname); 1467 sbuf_printf(sb, "%6.6s: ", ifname); 1468 sbuf_printf(sb, "%7ju %7ju %4ju %4ju %4lu %5lu %10lu %9ju ", 1469 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IBYTES), 1470 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IPACKETS), 1471 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IERRORS), 1472 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IQDROPS), 1473 /* rx_missed_errors */ 1474 0UL, /* rx_fifo_errors */ 1475 0UL, /* rx_length_errors + 1476 * rx_over_errors + 1477 * rx_crc_errors + 1478 * rx_frame_errors */ 1479 0UL, /* rx_compressed */ 1480 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IMCASTS)); 1481 /* XXX-BZ rx only? */ 1482 sbuf_printf(sb, "%8ju %7ju %4ju %4ju %4lu %5ju %7lu %10lu\n", 1483 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OBYTES), 1484 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OPACKETS), 1485 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OERRORS), 1486 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OQDROPS), 1487 0UL, /* tx_fifo_errors */ 1488 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_COLLISIONS), 1489 0UL, /* tx_carrier_errors + 1490 * tx_aborted_errors + 1491 * tx_window_errors + 1492 * tx_heartbeat_errors*/ 1493 0UL); /* tx_compressed */ 1494 } 1495 IFNET_RUNLOCK(); 1496 CURVNET_RESTORE(); 1497 1498 return (0); 1499 } 1500 1501 /* 1502 * Filler function for proc/sys/kernel/osrelease 1503 */ 1504 static int 1505 linprocfs_doosrelease(PFS_FILL_ARGS) 1506 { 1507 char osrelease[LINUX_MAX_UTSNAME]; 1508 1509 linux_get_osrelease(td, osrelease); 1510 sbuf_printf(sb, "%s\n", osrelease); 1511 1512 return (0); 1513 } 1514 1515 /* 1516 * Filler function for proc/sys/kernel/ostype 1517 */ 1518 static int 1519 linprocfs_doostype(PFS_FILL_ARGS) 1520 { 1521 char osname[LINUX_MAX_UTSNAME]; 1522 1523 linux_get_osname(td, osname); 1524 sbuf_printf(sb, "%s\n", osname); 1525 1526 return (0); 1527 } 1528 1529 /* 1530 * Filler function for proc/sys/kernel/version 1531 */ 1532 static int 1533 linprocfs_doosbuild(PFS_FILL_ARGS) 1534 { 1535 1536 linprocfs_osbuild(td, sb); 1537 sbuf_cat(sb, "\n"); 1538 return (0); 1539 } 1540 1541 /* 1542 * Filler function for proc/sys/kernel/msgmax 1543 */ 1544 static int 1545 linprocfs_domsgmax(PFS_FILL_ARGS) 1546 { 1547 1548 sbuf_printf(sb, "%d\n", msginfo.msgmax); 1549 return (0); 1550 } 1551 1552 /* 1553 * Filler function for proc/sys/kernel/msgmni 1554 */ 1555 static int 1556 linprocfs_domsgmni(PFS_FILL_ARGS) 1557 { 1558 1559 sbuf_printf(sb, "%d\n", msginfo.msgmni); 1560 return (0); 1561 } 1562 1563 /* 1564 * Filler function for proc/sys/kernel/msgmnb 1565 */ 1566 static int 1567 linprocfs_domsgmnb(PFS_FILL_ARGS) 1568 { 1569 1570 sbuf_printf(sb, "%d\n", msginfo.msgmnb); 1571 return (0); 1572 } 1573 1574 /* 1575 * Filler function for proc/sys/kernel/ngroups_max 1576 * 1577 * Note that in Linux it defaults to 65536, not 1023. 1578 */ 1579 static int 1580 linprocfs_dongroups_max(PFS_FILL_ARGS) 1581 { 1582 1583 sbuf_printf(sb, "%d\n", ngroups_max); 1584 return (0); 1585 } 1586 1587 /* 1588 * Filler function for proc/sys/kernel/pid_max 1589 */ 1590 static int 1591 linprocfs_dopid_max(PFS_FILL_ARGS) 1592 { 1593 1594 sbuf_printf(sb, "%i\n", PID_MAX); 1595 return (0); 1596 } 1597 1598 /* 1599 * Filler function for proc/sys/kernel/sem 1600 */ 1601 static int 1602 linprocfs_dosem(PFS_FILL_ARGS) 1603 { 1604 1605 sbuf_printf(sb, "%d %d %d %d\n", seminfo.semmsl, seminfo.semmns, 1606 seminfo.semopm, seminfo.semmni); 1607 return (0); 1608 } 1609 1610 /* 1611 * Filler function for proc/sys/kernel/shmall 1612 */ 1613 static int 1614 linprocfs_doshmall(PFS_FILL_ARGS) 1615 { 1616 1617 sbuf_printf(sb, "%lu\n", shminfo.shmall); 1618 return (0); 1619 } 1620 1621 /* 1622 * Filler function for proc/sys/kernel/shmmax 1623 */ 1624 static int 1625 linprocfs_doshmmax(PFS_FILL_ARGS) 1626 { 1627 1628 sbuf_printf(sb, "%lu\n", shminfo.shmmax); 1629 return (0); 1630 } 1631 1632 /* 1633 * Filler function for proc/sys/kernel/shmmni 1634 */ 1635 static int 1636 linprocfs_doshmmni(PFS_FILL_ARGS) 1637 { 1638 1639 sbuf_printf(sb, "%lu\n", shminfo.shmmni); 1640 return (0); 1641 } 1642 1643 /* 1644 * Filler function for proc/sys/kernel/tainted 1645 */ 1646 static int 1647 linprocfs_dotainted(PFS_FILL_ARGS) 1648 { 1649 1650 sbuf_printf(sb, "0\n"); 1651 return (0); 1652 } 1653 1654 /* 1655 * Filler function for proc/sys/vm/min_free_kbytes 1656 * 1657 * This mirrors the approach in illumos to return zero for reads. Effectively, 1658 * it says, no memory is kept in reserve for "atomic allocations". This class 1659 * of allocation can be used at times when a thread cannot be suspended. 1660 */ 1661 static int 1662 linprocfs_dominfree(PFS_FILL_ARGS) 1663 { 1664 1665 sbuf_printf(sb, "%d\n", 0); 1666 return (0); 1667 } 1668 1669 /* 1670 * Filler function for proc/scsi/device_info 1671 */ 1672 static int 1673 linprocfs_doscsidevinfo(PFS_FILL_ARGS) 1674 { 1675 1676 return (0); 1677 } 1678 1679 /* 1680 * Filler function for proc/scsi/scsi 1681 */ 1682 static int 1683 linprocfs_doscsiscsi(PFS_FILL_ARGS) 1684 { 1685 1686 return (0); 1687 } 1688 1689 /* 1690 * Filler function for proc/devices 1691 */ 1692 static int 1693 linprocfs_dodevices(PFS_FILL_ARGS) 1694 { 1695 char *char_devices; 1696 sbuf_printf(sb, "Character devices:\n"); 1697 1698 char_devices = linux_get_char_devices(); 1699 sbuf_printf(sb, "%s", char_devices); 1700 linux_free_get_char_devices(char_devices); 1701 1702 sbuf_printf(sb, "\nBlock devices:\n"); 1703 1704 return (0); 1705 } 1706 1707 /* 1708 * Filler function for proc/cmdline 1709 */ 1710 static int 1711 linprocfs_docmdline(PFS_FILL_ARGS) 1712 { 1713 1714 sbuf_printf(sb, "BOOT_IMAGE=%s", kernelname); 1715 sbuf_printf(sb, " ro root=302\n"); 1716 return (0); 1717 } 1718 1719 /* 1720 * Filler function for proc/filesystems 1721 */ 1722 static int 1723 linprocfs_dofilesystems(PFS_FILL_ARGS) 1724 { 1725 struct vfsconf *vfsp; 1726 1727 vfsconf_slock(); 1728 TAILQ_FOREACH(vfsp, &vfsconf, vfc_list) { 1729 if (vfsp->vfc_flags & VFCF_SYNTHETIC) 1730 sbuf_printf(sb, "nodev"); 1731 sbuf_printf(sb, "\t%s\n", vfsp->vfc_name); 1732 } 1733 vfsconf_sunlock(); 1734 return(0); 1735 } 1736 1737 /* 1738 * Filler function for proc/modules 1739 */ 1740 static int 1741 linprocfs_domodules(PFS_FILL_ARGS) 1742 { 1743 #if 0 1744 struct linker_file *lf; 1745 1746 TAILQ_FOREACH(lf, &linker_files, link) { 1747 sbuf_printf(sb, "%-20s%8lu%4d\n", lf->filename, 1748 (unsigned long)lf->size, lf->refs); 1749 } 1750 #endif 1751 return (0); 1752 } 1753 1754 /* 1755 * Filler function for proc/pid/fd 1756 */ 1757 static int 1758 linprocfs_dofdescfs(PFS_FILL_ARGS) 1759 { 1760 1761 if (p == curproc) 1762 sbuf_printf(sb, "/dev/fd"); 1763 else 1764 sbuf_printf(sb, "unknown"); 1765 return (0); 1766 } 1767 1768 /* 1769 * Filler function for proc/pid/limits 1770 */ 1771 static const struct linux_rlimit_ident { 1772 const char *desc; 1773 const char *unit; 1774 unsigned int rlim_id; 1775 } linux_rlimits_ident[] = { 1776 { "Max cpu time", "seconds", RLIMIT_CPU }, 1777 { "Max file size", "bytes", RLIMIT_FSIZE }, 1778 { "Max data size", "bytes", RLIMIT_DATA }, 1779 { "Max stack size", "bytes", RLIMIT_STACK }, 1780 { "Max core file size", "bytes", RLIMIT_CORE }, 1781 { "Max resident set", "bytes", RLIMIT_RSS }, 1782 { "Max processes", "processes", RLIMIT_NPROC }, 1783 { "Max open files", "files", RLIMIT_NOFILE }, 1784 { "Max locked memory", "bytes", RLIMIT_MEMLOCK }, 1785 { "Max address space", "bytes", RLIMIT_AS }, 1786 { "Max file locks", "locks", LINUX_RLIMIT_LOCKS }, 1787 { "Max pending signals", "signals", LINUX_RLIMIT_SIGPENDING }, 1788 { "Max msgqueue size", "bytes", LINUX_RLIMIT_MSGQUEUE }, 1789 { "Max nice priority", "", LINUX_RLIMIT_NICE }, 1790 { "Max realtime priority", "", LINUX_RLIMIT_RTPRIO }, 1791 { "Max realtime timeout", "us", LINUX_RLIMIT_RTTIME }, 1792 { 0, 0, 0 } 1793 }; 1794 1795 static int 1796 linprocfs_doproclimits(PFS_FILL_ARGS) 1797 { 1798 const struct linux_rlimit_ident *li; 1799 struct plimit *limp; 1800 struct rlimit rl; 1801 ssize_t size; 1802 int res, error; 1803 1804 error = 0; 1805 1806 PROC_LOCK(p); 1807 limp = lim_hold(p->p_limit); 1808 PROC_UNLOCK(p); 1809 size = sizeof(res); 1810 sbuf_printf(sb, "%-26s%-21s%-21s%-21s\n", "Limit", "Soft Limit", 1811 "Hard Limit", "Units"); 1812 for (li = linux_rlimits_ident; li->desc != NULL; ++li) { 1813 switch (li->rlim_id) 1814 { 1815 case LINUX_RLIMIT_LOCKS: 1816 /* FALLTHROUGH */ 1817 case LINUX_RLIMIT_RTTIME: 1818 rl.rlim_cur = RLIM_INFINITY; 1819 break; 1820 case LINUX_RLIMIT_SIGPENDING: 1821 error = kernel_sysctlbyname(td, 1822 "kern.sigqueue.max_pending_per_proc", 1823 &res, &size, 0, 0, 0, 0); 1824 if (error != 0) 1825 goto out; 1826 rl.rlim_cur = res; 1827 rl.rlim_max = res; 1828 break; 1829 case LINUX_RLIMIT_MSGQUEUE: 1830 error = kernel_sysctlbyname(td, 1831 "kern.ipc.msgmnb", &res, &size, 0, 0, 0, 0); 1832 if (error != 0) 1833 goto out; 1834 rl.rlim_cur = res; 1835 rl.rlim_max = res; 1836 break; 1837 case LINUX_RLIMIT_NICE: 1838 /* FALLTHROUGH */ 1839 case LINUX_RLIMIT_RTPRIO: 1840 rl.rlim_cur = 0; 1841 rl.rlim_max = 0; 1842 break; 1843 default: 1844 rl = limp->pl_rlimit[li->rlim_id]; 1845 break; 1846 } 1847 if (rl.rlim_cur == RLIM_INFINITY) 1848 sbuf_printf(sb, "%-26s%-21s%-21s%-10s\n", 1849 li->desc, "unlimited", "unlimited", li->unit); 1850 else 1851 sbuf_printf(sb, "%-26s%-21llu%-21llu%-10s\n", 1852 li->desc, (unsigned long long)rl.rlim_cur, 1853 (unsigned long long)rl.rlim_max, li->unit); 1854 } 1855 out: 1856 lim_free(limp); 1857 return (error); 1858 } 1859 1860 /* 1861 * The point of the following two functions is to work around 1862 * an assertion in Chromium; see kern/240991 for details. 1863 */ 1864 static int 1865 linprocfs_dotaskattr(PFS_ATTR_ARGS) 1866 { 1867 1868 vap->va_nlink = 3; 1869 return (0); 1870 } 1871 1872 /* 1873 * Filler function for proc/<pid>/task/.dummy 1874 */ 1875 static int 1876 linprocfs_dotaskdummy(PFS_FILL_ARGS) 1877 { 1878 1879 return (0); 1880 } 1881 1882 /* 1883 * Filler function for proc/sys/kernel/random/uuid 1884 */ 1885 static int 1886 linprocfs_douuid(PFS_FILL_ARGS) 1887 { 1888 struct uuid uuid; 1889 1890 kern_uuidgen(&uuid, 1); 1891 sbuf_printf_uuid(sb, &uuid); 1892 sbuf_printf(sb, "\n"); 1893 return(0); 1894 } 1895 1896 /* 1897 * Filler function for proc/sys/kernel/random/boot_id 1898 */ 1899 static int 1900 linprocfs_doboot_id(PFS_FILL_ARGS) 1901 { 1902 static bool firstboot = 1; 1903 static struct uuid uuid; 1904 1905 if (firstboot) { 1906 kern_uuidgen(&uuid, 1); 1907 firstboot = 0; 1908 } 1909 sbuf_printf_uuid(sb, &uuid); 1910 sbuf_printf(sb, "\n"); 1911 return(0); 1912 } 1913 1914 /* 1915 * Filler function for proc/pid/auxv 1916 */ 1917 static int 1918 linprocfs_doauxv(PFS_FILL_ARGS) 1919 { 1920 struct sbuf *asb; 1921 off_t buflen, resid; 1922 int error; 1923 1924 /* 1925 * Mimic linux behavior and pass only processes with usermode 1926 * address space as valid. Return zero silently otherwise. 1927 */ 1928 if (p->p_vmspace == &vmspace0) 1929 return (0); 1930 1931 if (uio->uio_resid == 0) 1932 return (0); 1933 if (uio->uio_offset < 0 || uio->uio_resid < 0) 1934 return (EINVAL); 1935 1936 asb = sbuf_new_auto(); 1937 if (asb == NULL) 1938 return (ENOMEM); 1939 error = proc_getauxv(td, p, asb); 1940 if (error == 0) 1941 error = sbuf_finish(asb); 1942 1943 resid = sbuf_len(asb) - uio->uio_offset; 1944 if (resid > uio->uio_resid) 1945 buflen = uio->uio_resid; 1946 else 1947 buflen = resid; 1948 if (buflen > IOSIZE_MAX) 1949 return (EINVAL); 1950 if (buflen > maxphys) 1951 buflen = maxphys; 1952 if (resid <= 0) 1953 return (0); 1954 1955 if (error == 0) 1956 error = uiomove(sbuf_data(asb) + uio->uio_offset, buflen, uio); 1957 sbuf_delete(asb); 1958 return (error); 1959 } 1960 1961 /* 1962 * Filler function for proc/self/oom_score_adj 1963 */ 1964 static int 1965 linprocfs_do_oom_score_adj(PFS_FILL_ARGS) 1966 { 1967 struct linux_pemuldata *pem; 1968 long oom; 1969 1970 pem = pem_find(p); 1971 if (pem == NULL || uio == NULL) 1972 return (EOPNOTSUPP); 1973 if (uio->uio_rw == UIO_READ) { 1974 sbuf_printf(sb, "%d\n", pem->oom_score_adj); 1975 } else { 1976 sbuf_trim(sb); 1977 sbuf_finish(sb); 1978 oom = strtol(sbuf_data(sb), NULL, 10); 1979 if (oom < LINUX_OOM_SCORE_ADJ_MIN || 1980 oom > LINUX_OOM_SCORE_ADJ_MAX) 1981 return (EINVAL); 1982 pem->oom_score_adj = oom; 1983 } 1984 return (0); 1985 } 1986 1987 /* 1988 * Filler function for proc/sys/vm/max_map_count 1989 * 1990 * Maximum number of active map areas, on Linux this limits the number 1991 * of vmaps per mm struct. We don't limit mappings, return a suitable 1992 * large value. 1993 */ 1994 static int 1995 linprocfs_domax_map_cnt(PFS_FILL_ARGS) 1996 { 1997 1998 sbuf_printf(sb, "%d\n", INT32_MAX); 1999 return (0); 2000 } 2001 2002 /* 2003 * Constructor 2004 */ 2005 static int 2006 linprocfs_init(PFS_INIT_ARGS) 2007 { 2008 struct pfs_node *root; 2009 struct pfs_node *dir; 2010 struct pfs_node *sys; 2011 2012 root = pi->pi_root; 2013 2014 /* /proc/... */ 2015 pfs_create_file(root, "cmdline", &linprocfs_docmdline, 2016 NULL, NULL, NULL, PFS_RD); 2017 pfs_create_file(root, "cpuinfo", &linprocfs_docpuinfo, 2018 NULL, NULL, NULL, PFS_RD); 2019 pfs_create_file(root, "devices", &linprocfs_dodevices, 2020 NULL, NULL, NULL, PFS_RD); 2021 pfs_create_file(root, "filesystems", &linprocfs_dofilesystems, 2022 NULL, NULL, NULL, PFS_RD); 2023 pfs_create_file(root, "loadavg", &linprocfs_doloadavg, 2024 NULL, NULL, NULL, PFS_RD); 2025 pfs_create_file(root, "meminfo", &linprocfs_domeminfo, 2026 NULL, NULL, NULL, PFS_RD); 2027 pfs_create_file(root, "modules", &linprocfs_domodules, 2028 NULL, NULL, NULL, PFS_RD); 2029 pfs_create_file(root, "mounts", &linprocfs_domtab, 2030 NULL, NULL, NULL, PFS_RD); 2031 pfs_create_file(root, "mtab", &linprocfs_domtab, 2032 NULL, NULL, NULL, PFS_RD); 2033 pfs_create_file(root, "partitions", &linprocfs_dopartitions, 2034 NULL, NULL, NULL, PFS_RD); 2035 pfs_create_link(root, "self", &procfs_docurproc, 2036 NULL, NULL, NULL, 0); 2037 pfs_create_file(root, "stat", &linprocfs_dostat, 2038 NULL, NULL, NULL, PFS_RD); 2039 pfs_create_file(root, "swaps", &linprocfs_doswaps, 2040 NULL, NULL, NULL, PFS_RD); 2041 pfs_create_file(root, "uptime", &linprocfs_douptime, 2042 NULL, NULL, NULL, PFS_RD); 2043 pfs_create_file(root, "version", &linprocfs_doversion, 2044 NULL, NULL, NULL, PFS_RD); 2045 2046 /* /proc/bus/... */ 2047 dir = pfs_create_dir(root, "bus", NULL, NULL, NULL, 0); 2048 dir = pfs_create_dir(dir, "pci", NULL, NULL, NULL, 0); 2049 dir = pfs_create_dir(dir, "devices", NULL, NULL, NULL, 0); 2050 2051 /* /proc/net/... */ 2052 dir = pfs_create_dir(root, "net", NULL, NULL, NULL, 0); 2053 pfs_create_file(dir, "dev", &linprocfs_donetdev, 2054 NULL, NULL, NULL, PFS_RD); 2055 2056 /* /proc/<pid>/... */ 2057 dir = pfs_create_dir(root, "pid", NULL, NULL, NULL, PFS_PROCDEP); 2058 pfs_create_file(dir, "cmdline", &linprocfs_doproccmdline, 2059 NULL, NULL, NULL, PFS_RD); 2060 pfs_create_link(dir, "cwd", &linprocfs_doproccwd, 2061 NULL, NULL, NULL, 0); 2062 pfs_create_file(dir, "environ", &linprocfs_doprocenviron, 2063 NULL, &procfs_candebug, NULL, PFS_RD); 2064 pfs_create_link(dir, "exe", &procfs_doprocfile, 2065 NULL, &procfs_notsystem, NULL, 0); 2066 pfs_create_file(dir, "maps", &linprocfs_doprocmaps, 2067 NULL, NULL, NULL, PFS_RD | PFS_AUTODRAIN); 2068 pfs_create_file(dir, "mem", &linprocfs_doprocmem, 2069 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR | PFS_RAW); 2070 pfs_create_file(dir, "mountinfo", &linprocfs_doprocmountinfo, 2071 NULL, NULL, NULL, PFS_RD); 2072 pfs_create_file(dir, "mounts", &linprocfs_domtab, 2073 NULL, NULL, NULL, PFS_RD); 2074 pfs_create_link(dir, "root", &linprocfs_doprocroot, 2075 NULL, NULL, NULL, 0); 2076 pfs_create_file(dir, "stat", &linprocfs_doprocstat, 2077 NULL, NULL, NULL, PFS_RD); 2078 pfs_create_file(dir, "statm", &linprocfs_doprocstatm, 2079 NULL, NULL, NULL, PFS_RD); 2080 pfs_create_file(dir, "status", &linprocfs_doprocstatus, 2081 NULL, NULL, NULL, PFS_RD); 2082 pfs_create_link(dir, "fd", &linprocfs_dofdescfs, 2083 NULL, NULL, NULL, 0); 2084 pfs_create_file(dir, "auxv", &linprocfs_doauxv, 2085 NULL, &procfs_candebug, NULL, PFS_RD|PFS_RAWRD); 2086 pfs_create_file(dir, "limits", &linprocfs_doproclimits, 2087 NULL, NULL, NULL, PFS_RD); 2088 pfs_create_file(dir, "oom_score_adj", &linprocfs_do_oom_score_adj, 2089 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR); 2090 2091 /* /proc/<pid>/task/... */ 2092 dir = pfs_create_dir(dir, "task", linprocfs_dotaskattr, NULL, NULL, 0); 2093 pfs_create_file(dir, ".dummy", &linprocfs_dotaskdummy, 2094 NULL, NULL, NULL, PFS_RD); 2095 2096 /* /proc/scsi/... */ 2097 dir = pfs_create_dir(root, "scsi", NULL, NULL, NULL, 0); 2098 pfs_create_file(dir, "device_info", &linprocfs_doscsidevinfo, 2099 NULL, NULL, NULL, PFS_RD); 2100 pfs_create_file(dir, "scsi", &linprocfs_doscsiscsi, 2101 NULL, NULL, NULL, PFS_RD); 2102 2103 /* /proc/sys/... */ 2104 sys = pfs_create_dir(root, "sys", NULL, NULL, NULL, 0); 2105 2106 /* /proc/sys/kernel/... */ 2107 dir = pfs_create_dir(sys, "kernel", NULL, NULL, NULL, 0); 2108 pfs_create_file(dir, "osrelease", &linprocfs_doosrelease, 2109 NULL, NULL, NULL, PFS_RD); 2110 pfs_create_file(dir, "ostype", &linprocfs_doostype, 2111 NULL, NULL, NULL, PFS_RD); 2112 pfs_create_file(dir, "version", &linprocfs_doosbuild, 2113 NULL, NULL, NULL, PFS_RD); 2114 pfs_create_file(dir, "msgmax", &linprocfs_domsgmax, 2115 NULL, NULL, NULL, PFS_RD); 2116 pfs_create_file(dir, "msgmni", &linprocfs_domsgmni, 2117 NULL, NULL, NULL, PFS_RD); 2118 pfs_create_file(dir, "msgmnb", &linprocfs_domsgmnb, 2119 NULL, NULL, NULL, PFS_RD); 2120 pfs_create_file(dir, "ngroups_max", &linprocfs_dongroups_max, 2121 NULL, NULL, NULL, PFS_RD); 2122 pfs_create_file(dir, "pid_max", &linprocfs_dopid_max, 2123 NULL, NULL, NULL, PFS_RD); 2124 pfs_create_file(dir, "sem", &linprocfs_dosem, 2125 NULL, NULL, NULL, PFS_RD); 2126 pfs_create_file(dir, "shmall", &linprocfs_doshmall, 2127 NULL, NULL, NULL, PFS_RD); 2128 pfs_create_file(dir, "shmmax", &linprocfs_doshmmax, 2129 NULL, NULL, NULL, PFS_RD); 2130 pfs_create_file(dir, "shmmni", &linprocfs_doshmmni, 2131 NULL, NULL, NULL, PFS_RD); 2132 pfs_create_file(dir, "tainted", &linprocfs_dotainted, 2133 NULL, NULL, NULL, PFS_RD); 2134 2135 /* /proc/sys/kernel/random/... */ 2136 dir = pfs_create_dir(dir, "random", NULL, NULL, NULL, 0); 2137 pfs_create_file(dir, "uuid", &linprocfs_douuid, 2138 NULL, NULL, NULL, PFS_RD); 2139 pfs_create_file(dir, "boot_id", &linprocfs_doboot_id, 2140 NULL, NULL, NULL, PFS_RD); 2141 2142 /* /proc/sys/vm/.... */ 2143 dir = pfs_create_dir(sys, "vm", NULL, NULL, NULL, 0); 2144 pfs_create_file(dir, "min_free_kbytes", &linprocfs_dominfree, 2145 NULL, NULL, NULL, PFS_RD); 2146 pfs_create_file(dir, "max_map_count", &linprocfs_domax_map_cnt, 2147 NULL, NULL, NULL, PFS_RD); 2148 2149 return (0); 2150 } 2151 2152 /* 2153 * Destructor 2154 */ 2155 static int 2156 linprocfs_uninit(PFS_INIT_ARGS) 2157 { 2158 2159 /* nothing to do, pseudofs will GC */ 2160 return (0); 2161 } 2162 2163 PSEUDOFS(linprocfs, 1, VFCF_JAIL); 2164 #if defined(__aarch64__) || defined(__amd64__) 2165 MODULE_DEPEND(linprocfs, linux_common, 1, 1, 1); 2166 #else 2167 MODULE_DEPEND(linprocfs, linux, 1, 1, 1); 2168 #endif 2169 MODULE_DEPEND(linprocfs, procfs, 1, 1, 1); 2170 MODULE_DEPEND(linprocfs, sysvmsg, 1, 1, 1); 2171 MODULE_DEPEND(linprocfs, sysvsem, 1, 1, 1); 2172 MODULE_DEPEND(linprocfs, sysvshm, 1, 1, 1); 2173