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 if (entry->eflags & MAP_ENTRY_IS_SUB_MAP) 1311 continue; 1312 e_prot = entry->protection; 1313 e_start = entry->start; 1314 e_end = entry->end; 1315 obj = entry->object.vm_object; 1316 off = entry->offset; 1317 for (lobj = tobj = obj; tobj != NULL; 1318 lobj = tobj, tobj = tobj->backing_object) { 1319 VM_OBJECT_RLOCK(tobj); 1320 off += lobj->backing_object_offset; 1321 if (lobj != obj) 1322 VM_OBJECT_RUNLOCK(lobj); 1323 } 1324 private = (entry->eflags & MAP_ENTRY_COW) != 0 || obj == NULL || 1325 (obj->flags & OBJ_ANON) != 0; 1326 last_timestamp = map->timestamp; 1327 vm_map_unlock_read(map); 1328 ino = 0; 1329 if (lobj) { 1330 vp = vm_object_vnode(lobj); 1331 if (vp != NULL) 1332 vref(vp); 1333 if (lobj != obj) 1334 VM_OBJECT_RUNLOCK(lobj); 1335 VM_OBJECT_RUNLOCK(obj); 1336 if (vp != NULL) { 1337 vn_fullpath(vp, &name, &freename); 1338 vn_lock(vp, LK_SHARED | LK_RETRY); 1339 VOP_GETATTR(vp, &vat, td->td_ucred); 1340 ino = vat.va_fileid; 1341 vput(vp); 1342 } else if (SV_PROC_ABI(p) == SV_ABI_LINUX) { 1343 /* 1344 * sv_shared_page_base pointed out to the 1345 * FreeBSD sharedpage, PAGE_SIZE is a size 1346 * of it. The vDSO page is above. 1347 */ 1348 if (e_start == p->p_sysent->sv_shared_page_base + 1349 PAGE_SIZE) 1350 name = vdso_str; 1351 if (e_end == p->p_sysent->sv_usrstack) 1352 name = stack_str; 1353 } 1354 } 1355 1356 /* 1357 * format: 1358 * start, end, access, offset, major, minor, inode, name. 1359 */ 1360 error = sbuf_printf(sb, l_map_str, 1361 (u_long)e_start, (u_long)e_end, 1362 (e_prot & VM_PROT_READ)?"r":"-", 1363 (e_prot & VM_PROT_WRITE)?"w":"-", 1364 (e_prot & VM_PROT_EXECUTE)?"x":"-", 1365 private ? "p" : "s", 1366 (u_long)off, 1367 0, 1368 0, 1369 (u_long)ino, 1370 *name ? " " : " ", 1371 name 1372 ); 1373 if (freename) 1374 free(freename, M_TEMP); 1375 vm_map_lock_read(map); 1376 if (error == -1) { 1377 error = 0; 1378 break; 1379 } 1380 if (last_timestamp != map->timestamp) { 1381 /* 1382 * Look again for the entry because the map was 1383 * modified while it was unlocked. Specifically, 1384 * the entry may have been clipped, merged, or deleted. 1385 */ 1386 vm_map_lookup_entry(map, e_end - 1, &tmp_entry); 1387 entry = tmp_entry; 1388 } 1389 } 1390 vm_map_unlock_read(map); 1391 vmspace_free(vm); 1392 1393 return (error); 1394 } 1395 1396 /* 1397 * Filler function for proc/pid/mem 1398 */ 1399 static int 1400 linprocfs_doprocmem(PFS_FILL_ARGS) 1401 { 1402 ssize_t resid; 1403 int error; 1404 1405 resid = uio->uio_resid; 1406 error = procfs_doprocmem(PFS_FILL_ARGNAMES); 1407 1408 if (uio->uio_rw == UIO_READ && resid != uio->uio_resid) 1409 return (0); 1410 1411 if (error == EFAULT) 1412 error = EIO; 1413 1414 return (error); 1415 } 1416 1417 static int 1418 linux_ifname(struct ifnet *ifp, char *buffer, size_t buflen) 1419 { 1420 struct ifnet *ifscan; 1421 int ethno; 1422 1423 IFNET_RLOCK_ASSERT(); 1424 1425 /* Short-circuit non ethernet interfaces */ 1426 if (linux_use_real_ifname(ifp)) 1427 return (strlcpy(buffer, ifp->if_xname, buflen)); 1428 1429 /* Determine the (relative) unit number for ethernet interfaces */ 1430 ethno = 0; 1431 CK_STAILQ_FOREACH(ifscan, &V_ifnet, if_link) { 1432 if (ifscan == ifp) 1433 return (snprintf(buffer, buflen, "eth%d", ethno)); 1434 if (!linux_use_real_ifname(ifscan)) 1435 ethno++; 1436 } 1437 1438 return (0); 1439 } 1440 1441 /* 1442 * Filler function for proc/net/dev 1443 */ 1444 static int 1445 linprocfs_donetdev(PFS_FILL_ARGS) 1446 { 1447 char ifname[16]; /* XXX LINUX_IFNAMSIZ */ 1448 struct ifnet *ifp; 1449 1450 sbuf_printf(sb, "%6s|%58s|%s\n" 1451 "%6s|%58s|%58s\n", 1452 "Inter-", " Receive", " Transmit", 1453 " face", 1454 "bytes packets errs drop fifo frame compressed multicast", 1455 "bytes packets errs drop fifo colls carrier compressed"); 1456 1457 CURVNET_SET(TD_TO_VNET(curthread)); 1458 IFNET_RLOCK(); 1459 CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) { 1460 linux_ifname(ifp, ifname, sizeof ifname); 1461 sbuf_printf(sb, "%6.6s: ", ifname); 1462 sbuf_printf(sb, "%7ju %7ju %4ju %4ju %4lu %5lu %10lu %9ju ", 1463 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IBYTES), 1464 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IPACKETS), 1465 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IERRORS), 1466 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IQDROPS), 1467 /* rx_missed_errors */ 1468 0UL, /* rx_fifo_errors */ 1469 0UL, /* rx_length_errors + 1470 * rx_over_errors + 1471 * rx_crc_errors + 1472 * rx_frame_errors */ 1473 0UL, /* rx_compressed */ 1474 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IMCASTS)); 1475 /* XXX-BZ rx only? */ 1476 sbuf_printf(sb, "%8ju %7ju %4ju %4ju %4lu %5ju %7lu %10lu\n", 1477 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OBYTES), 1478 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OPACKETS), 1479 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OERRORS), 1480 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OQDROPS), 1481 0UL, /* tx_fifo_errors */ 1482 (uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_COLLISIONS), 1483 0UL, /* tx_carrier_errors + 1484 * tx_aborted_errors + 1485 * tx_window_errors + 1486 * tx_heartbeat_errors*/ 1487 0UL); /* tx_compressed */ 1488 } 1489 IFNET_RUNLOCK(); 1490 CURVNET_RESTORE(); 1491 1492 return (0); 1493 } 1494 1495 /* 1496 * Filler function for proc/sys/kernel/osrelease 1497 */ 1498 static int 1499 linprocfs_doosrelease(PFS_FILL_ARGS) 1500 { 1501 char osrelease[LINUX_MAX_UTSNAME]; 1502 1503 linux_get_osrelease(td, osrelease); 1504 sbuf_printf(sb, "%s\n", osrelease); 1505 1506 return (0); 1507 } 1508 1509 /* 1510 * Filler function for proc/sys/kernel/ostype 1511 */ 1512 static int 1513 linprocfs_doostype(PFS_FILL_ARGS) 1514 { 1515 char osname[LINUX_MAX_UTSNAME]; 1516 1517 linux_get_osname(td, osname); 1518 sbuf_printf(sb, "%s\n", osname); 1519 1520 return (0); 1521 } 1522 1523 /* 1524 * Filler function for proc/sys/kernel/version 1525 */ 1526 static int 1527 linprocfs_doosbuild(PFS_FILL_ARGS) 1528 { 1529 1530 linprocfs_osbuild(td, sb); 1531 sbuf_cat(sb, "\n"); 1532 return (0); 1533 } 1534 1535 /* 1536 * Filler function for proc/sys/kernel/msgmax 1537 */ 1538 static int 1539 linprocfs_domsgmax(PFS_FILL_ARGS) 1540 { 1541 1542 sbuf_printf(sb, "%d\n", msginfo.msgmax); 1543 return (0); 1544 } 1545 1546 /* 1547 * Filler function for proc/sys/kernel/msgmni 1548 */ 1549 static int 1550 linprocfs_domsgmni(PFS_FILL_ARGS) 1551 { 1552 1553 sbuf_printf(sb, "%d\n", msginfo.msgmni); 1554 return (0); 1555 } 1556 1557 /* 1558 * Filler function for proc/sys/kernel/msgmnb 1559 */ 1560 static int 1561 linprocfs_domsgmnb(PFS_FILL_ARGS) 1562 { 1563 1564 sbuf_printf(sb, "%d\n", msginfo.msgmnb); 1565 return (0); 1566 } 1567 1568 /* 1569 * Filler function for proc/sys/kernel/ngroups_max 1570 * 1571 * Note that in Linux it defaults to 65536, not 1023. 1572 */ 1573 static int 1574 linprocfs_dongroups_max(PFS_FILL_ARGS) 1575 { 1576 1577 sbuf_printf(sb, "%d\n", ngroups_max); 1578 return (0); 1579 } 1580 1581 /* 1582 * Filler function for proc/sys/kernel/pid_max 1583 */ 1584 static int 1585 linprocfs_dopid_max(PFS_FILL_ARGS) 1586 { 1587 1588 sbuf_printf(sb, "%i\n", PID_MAX); 1589 return (0); 1590 } 1591 1592 /* 1593 * Filler function for proc/sys/kernel/sem 1594 */ 1595 static int 1596 linprocfs_dosem(PFS_FILL_ARGS) 1597 { 1598 1599 sbuf_printf(sb, "%d %d %d %d\n", seminfo.semmsl, seminfo.semmns, 1600 seminfo.semopm, seminfo.semmni); 1601 return (0); 1602 } 1603 1604 /* 1605 * Filler function for proc/sys/kernel/shmall 1606 */ 1607 static int 1608 linprocfs_doshmall(PFS_FILL_ARGS) 1609 { 1610 1611 sbuf_printf(sb, "%lu\n", shminfo.shmall); 1612 return (0); 1613 } 1614 1615 /* 1616 * Filler function for proc/sys/kernel/shmmax 1617 */ 1618 static int 1619 linprocfs_doshmmax(PFS_FILL_ARGS) 1620 { 1621 1622 sbuf_printf(sb, "%lu\n", shminfo.shmmax); 1623 return (0); 1624 } 1625 1626 /* 1627 * Filler function for proc/sys/kernel/shmmni 1628 */ 1629 static int 1630 linprocfs_doshmmni(PFS_FILL_ARGS) 1631 { 1632 1633 sbuf_printf(sb, "%lu\n", shminfo.shmmni); 1634 return (0); 1635 } 1636 1637 /* 1638 * Filler function for proc/sys/kernel/tainted 1639 */ 1640 static int 1641 linprocfs_dotainted(PFS_FILL_ARGS) 1642 { 1643 1644 sbuf_printf(sb, "0\n"); 1645 return (0); 1646 } 1647 1648 /* 1649 * Filler function for proc/sys/vm/min_free_kbytes 1650 * 1651 * This mirrors the approach in illumos to return zero for reads. Effectively, 1652 * it says, no memory is kept in reserve for "atomic allocations". This class 1653 * of allocation can be used at times when a thread cannot be suspended. 1654 */ 1655 static int 1656 linprocfs_dominfree(PFS_FILL_ARGS) 1657 { 1658 1659 sbuf_printf(sb, "%d\n", 0); 1660 return (0); 1661 } 1662 1663 /* 1664 * Filler function for proc/scsi/device_info 1665 */ 1666 static int 1667 linprocfs_doscsidevinfo(PFS_FILL_ARGS) 1668 { 1669 1670 return (0); 1671 } 1672 1673 /* 1674 * Filler function for proc/scsi/scsi 1675 */ 1676 static int 1677 linprocfs_doscsiscsi(PFS_FILL_ARGS) 1678 { 1679 1680 return (0); 1681 } 1682 1683 /* 1684 * Filler function for proc/devices 1685 */ 1686 static int 1687 linprocfs_dodevices(PFS_FILL_ARGS) 1688 { 1689 char *char_devices; 1690 sbuf_printf(sb, "Character devices:\n"); 1691 1692 char_devices = linux_get_char_devices(); 1693 sbuf_printf(sb, "%s", char_devices); 1694 linux_free_get_char_devices(char_devices); 1695 1696 sbuf_printf(sb, "\nBlock devices:\n"); 1697 1698 return (0); 1699 } 1700 1701 /* 1702 * Filler function for proc/cmdline 1703 */ 1704 static int 1705 linprocfs_docmdline(PFS_FILL_ARGS) 1706 { 1707 1708 sbuf_printf(sb, "BOOT_IMAGE=%s", kernelname); 1709 sbuf_printf(sb, " ro root=302\n"); 1710 return (0); 1711 } 1712 1713 /* 1714 * Filler function for proc/filesystems 1715 */ 1716 static int 1717 linprocfs_dofilesystems(PFS_FILL_ARGS) 1718 { 1719 struct vfsconf *vfsp; 1720 1721 vfsconf_slock(); 1722 TAILQ_FOREACH(vfsp, &vfsconf, vfc_list) { 1723 if (vfsp->vfc_flags & VFCF_SYNTHETIC) 1724 sbuf_printf(sb, "nodev"); 1725 sbuf_printf(sb, "\t%s\n", vfsp->vfc_name); 1726 } 1727 vfsconf_sunlock(); 1728 return(0); 1729 } 1730 1731 /* 1732 * Filler function for proc/modules 1733 */ 1734 static int 1735 linprocfs_domodules(PFS_FILL_ARGS) 1736 { 1737 #if 0 1738 struct linker_file *lf; 1739 1740 TAILQ_FOREACH(lf, &linker_files, link) { 1741 sbuf_printf(sb, "%-20s%8lu%4d\n", lf->filename, 1742 (unsigned long)lf->size, lf->refs); 1743 } 1744 #endif 1745 return (0); 1746 } 1747 1748 /* 1749 * Filler function for proc/pid/fd 1750 */ 1751 static int 1752 linprocfs_dofdescfs(PFS_FILL_ARGS) 1753 { 1754 1755 if (p == curproc) 1756 sbuf_printf(sb, "/dev/fd"); 1757 else 1758 sbuf_printf(sb, "unknown"); 1759 return (0); 1760 } 1761 1762 /* 1763 * Filler function for proc/pid/limits 1764 */ 1765 static const struct linux_rlimit_ident { 1766 const char *desc; 1767 const char *unit; 1768 unsigned int rlim_id; 1769 } linux_rlimits_ident[] = { 1770 { "Max cpu time", "seconds", RLIMIT_CPU }, 1771 { "Max file size", "bytes", RLIMIT_FSIZE }, 1772 { "Max data size", "bytes", RLIMIT_DATA }, 1773 { "Max stack size", "bytes", RLIMIT_STACK }, 1774 { "Max core file size", "bytes", RLIMIT_CORE }, 1775 { "Max resident set", "bytes", RLIMIT_RSS }, 1776 { "Max processes", "processes", RLIMIT_NPROC }, 1777 { "Max open files", "files", RLIMIT_NOFILE }, 1778 { "Max locked memory", "bytes", RLIMIT_MEMLOCK }, 1779 { "Max address space", "bytes", RLIMIT_AS }, 1780 { "Max file locks", "locks", LINUX_RLIMIT_LOCKS }, 1781 { "Max pending signals", "signals", LINUX_RLIMIT_SIGPENDING }, 1782 { "Max msgqueue size", "bytes", LINUX_RLIMIT_MSGQUEUE }, 1783 { "Max nice priority", "", LINUX_RLIMIT_NICE }, 1784 { "Max realtime priority", "", LINUX_RLIMIT_RTPRIO }, 1785 { "Max realtime timeout", "us", LINUX_RLIMIT_RTTIME }, 1786 { 0, 0, 0 } 1787 }; 1788 1789 static int 1790 linprocfs_doproclimits(PFS_FILL_ARGS) 1791 { 1792 const struct linux_rlimit_ident *li; 1793 struct plimit *limp; 1794 struct rlimit rl; 1795 ssize_t size; 1796 int res, error; 1797 1798 error = 0; 1799 1800 PROC_LOCK(p); 1801 limp = lim_hold(p->p_limit); 1802 PROC_UNLOCK(p); 1803 size = sizeof(res); 1804 sbuf_printf(sb, "%-26s%-21s%-21s%-21s\n", "Limit", "Soft Limit", 1805 "Hard Limit", "Units"); 1806 for (li = linux_rlimits_ident; li->desc != NULL; ++li) { 1807 switch (li->rlim_id) 1808 { 1809 case LINUX_RLIMIT_LOCKS: 1810 /* FALLTHROUGH */ 1811 case LINUX_RLIMIT_RTTIME: 1812 rl.rlim_cur = RLIM_INFINITY; 1813 break; 1814 case LINUX_RLIMIT_SIGPENDING: 1815 error = kernel_sysctlbyname(td, 1816 "kern.sigqueue.max_pending_per_proc", 1817 &res, &size, 0, 0, 0, 0); 1818 if (error != 0) 1819 goto out; 1820 rl.rlim_cur = res; 1821 rl.rlim_max = res; 1822 break; 1823 case LINUX_RLIMIT_MSGQUEUE: 1824 error = kernel_sysctlbyname(td, 1825 "kern.ipc.msgmnb", &res, &size, 0, 0, 0, 0); 1826 if (error != 0) 1827 goto out; 1828 rl.rlim_cur = res; 1829 rl.rlim_max = res; 1830 break; 1831 case LINUX_RLIMIT_NICE: 1832 /* FALLTHROUGH */ 1833 case LINUX_RLIMIT_RTPRIO: 1834 rl.rlim_cur = 0; 1835 rl.rlim_max = 0; 1836 break; 1837 default: 1838 rl = limp->pl_rlimit[li->rlim_id]; 1839 break; 1840 } 1841 if (rl.rlim_cur == RLIM_INFINITY) 1842 sbuf_printf(sb, "%-26s%-21s%-21s%-10s\n", 1843 li->desc, "unlimited", "unlimited", li->unit); 1844 else 1845 sbuf_printf(sb, "%-26s%-21llu%-21llu%-10s\n", 1846 li->desc, (unsigned long long)rl.rlim_cur, 1847 (unsigned long long)rl.rlim_max, li->unit); 1848 } 1849 out: 1850 lim_free(limp); 1851 return (error); 1852 } 1853 1854 /* 1855 * The point of the following two functions is to work around 1856 * an assertion in Chromium; see kern/240991 for details. 1857 */ 1858 static int 1859 linprocfs_dotaskattr(PFS_ATTR_ARGS) 1860 { 1861 1862 vap->va_nlink = 3; 1863 return (0); 1864 } 1865 1866 /* 1867 * Filler function for proc/<pid>/task/.dummy 1868 */ 1869 static int 1870 linprocfs_dotaskdummy(PFS_FILL_ARGS) 1871 { 1872 1873 return (0); 1874 } 1875 1876 /* 1877 * Filler function for proc/sys/kernel/random/uuid 1878 */ 1879 static int 1880 linprocfs_douuid(PFS_FILL_ARGS) 1881 { 1882 struct uuid uuid; 1883 1884 kern_uuidgen(&uuid, 1); 1885 sbuf_printf_uuid(sb, &uuid); 1886 sbuf_printf(sb, "\n"); 1887 return(0); 1888 } 1889 1890 /* 1891 * Filler function for proc/sys/kernel/random/boot_id 1892 */ 1893 static int 1894 linprocfs_doboot_id(PFS_FILL_ARGS) 1895 { 1896 static bool firstboot = 1; 1897 static struct uuid uuid; 1898 1899 if (firstboot) { 1900 kern_uuidgen(&uuid, 1); 1901 firstboot = 0; 1902 } 1903 sbuf_printf_uuid(sb, &uuid); 1904 sbuf_printf(sb, "\n"); 1905 return(0); 1906 } 1907 1908 /* 1909 * Filler function for proc/pid/auxv 1910 */ 1911 static int 1912 linprocfs_doauxv(PFS_FILL_ARGS) 1913 { 1914 struct sbuf *asb; 1915 off_t buflen, resid; 1916 int error; 1917 1918 /* 1919 * Mimic linux behavior and pass only processes with usermode 1920 * address space as valid. Return zero silently otherwise. 1921 */ 1922 if (p->p_vmspace == &vmspace0) 1923 return (0); 1924 1925 if (uio->uio_resid == 0) 1926 return (0); 1927 if (uio->uio_offset < 0 || uio->uio_resid < 0) 1928 return (EINVAL); 1929 1930 asb = sbuf_new_auto(); 1931 if (asb == NULL) 1932 return (ENOMEM); 1933 error = proc_getauxv(td, p, asb); 1934 if (error == 0) 1935 error = sbuf_finish(asb); 1936 1937 resid = sbuf_len(asb) - uio->uio_offset; 1938 if (resid > uio->uio_resid) 1939 buflen = uio->uio_resid; 1940 else 1941 buflen = resid; 1942 if (buflen > IOSIZE_MAX) 1943 return (EINVAL); 1944 if (buflen > maxphys) 1945 buflen = maxphys; 1946 if (resid <= 0) 1947 return (0); 1948 1949 if (error == 0) 1950 error = uiomove(sbuf_data(asb) + uio->uio_offset, buflen, uio); 1951 sbuf_delete(asb); 1952 return (error); 1953 } 1954 1955 /* 1956 * Filler function for proc/self/oom_score_adj 1957 */ 1958 static int 1959 linprocfs_do_oom_score_adj(PFS_FILL_ARGS) 1960 { 1961 struct linux_pemuldata *pem; 1962 long oom; 1963 1964 pem = pem_find(p); 1965 if (pem == NULL || uio == NULL) 1966 return (EOPNOTSUPP); 1967 if (uio->uio_rw == UIO_READ) { 1968 sbuf_printf(sb, "%d\n", pem->oom_score_adj); 1969 } else { 1970 sbuf_trim(sb); 1971 sbuf_finish(sb); 1972 oom = strtol(sbuf_data(sb), NULL, 10); 1973 if (oom < LINUX_OOM_SCORE_ADJ_MIN || 1974 oom > LINUX_OOM_SCORE_ADJ_MAX) 1975 return (EINVAL); 1976 pem->oom_score_adj = oom; 1977 } 1978 return (0); 1979 } 1980 1981 /* 1982 * Filler function for proc/sys/vm/max_map_count 1983 * 1984 * Maximum number of active map areas, on Linux this limits the number 1985 * of vmaps per mm struct. We don't limit mappings, return a suitable 1986 * large value. 1987 */ 1988 static int 1989 linprocfs_domax_map_cnt(PFS_FILL_ARGS) 1990 { 1991 1992 sbuf_printf(sb, "%d\n", INT32_MAX); 1993 return (0); 1994 } 1995 1996 /* 1997 * Constructor 1998 */ 1999 static int 2000 linprocfs_init(PFS_INIT_ARGS) 2001 { 2002 struct pfs_node *root; 2003 struct pfs_node *dir; 2004 struct pfs_node *sys; 2005 2006 root = pi->pi_root; 2007 2008 /* /proc/... */ 2009 pfs_create_file(root, "cmdline", &linprocfs_docmdline, 2010 NULL, NULL, NULL, PFS_RD); 2011 pfs_create_file(root, "cpuinfo", &linprocfs_docpuinfo, 2012 NULL, NULL, NULL, PFS_RD); 2013 pfs_create_file(root, "devices", &linprocfs_dodevices, 2014 NULL, NULL, NULL, PFS_RD); 2015 pfs_create_file(root, "filesystems", &linprocfs_dofilesystems, 2016 NULL, NULL, NULL, PFS_RD); 2017 pfs_create_file(root, "loadavg", &linprocfs_doloadavg, 2018 NULL, NULL, NULL, PFS_RD); 2019 pfs_create_file(root, "meminfo", &linprocfs_domeminfo, 2020 NULL, NULL, NULL, PFS_RD); 2021 pfs_create_file(root, "modules", &linprocfs_domodules, 2022 NULL, NULL, NULL, PFS_RD); 2023 pfs_create_file(root, "mounts", &linprocfs_domtab, 2024 NULL, NULL, NULL, PFS_RD); 2025 pfs_create_file(root, "mtab", &linprocfs_domtab, 2026 NULL, NULL, NULL, PFS_RD); 2027 pfs_create_file(root, "partitions", &linprocfs_dopartitions, 2028 NULL, NULL, NULL, PFS_RD); 2029 pfs_create_link(root, "self", &procfs_docurproc, 2030 NULL, NULL, NULL, 0); 2031 pfs_create_file(root, "stat", &linprocfs_dostat, 2032 NULL, NULL, NULL, PFS_RD); 2033 pfs_create_file(root, "swaps", &linprocfs_doswaps, 2034 NULL, NULL, NULL, PFS_RD); 2035 pfs_create_file(root, "uptime", &linprocfs_douptime, 2036 NULL, NULL, NULL, PFS_RD); 2037 pfs_create_file(root, "version", &linprocfs_doversion, 2038 NULL, NULL, NULL, PFS_RD); 2039 2040 /* /proc/bus/... */ 2041 dir = pfs_create_dir(root, "bus", NULL, NULL, NULL, 0); 2042 dir = pfs_create_dir(dir, "pci", NULL, NULL, NULL, 0); 2043 dir = pfs_create_dir(dir, "devices", NULL, NULL, NULL, 0); 2044 2045 /* /proc/net/... */ 2046 dir = pfs_create_dir(root, "net", NULL, NULL, NULL, 0); 2047 pfs_create_file(dir, "dev", &linprocfs_donetdev, 2048 NULL, NULL, NULL, PFS_RD); 2049 2050 /* /proc/<pid>/... */ 2051 dir = pfs_create_dir(root, "pid", NULL, NULL, NULL, PFS_PROCDEP); 2052 pfs_create_file(dir, "cmdline", &linprocfs_doproccmdline, 2053 NULL, NULL, NULL, PFS_RD); 2054 pfs_create_link(dir, "cwd", &linprocfs_doproccwd, 2055 NULL, NULL, NULL, 0); 2056 pfs_create_file(dir, "environ", &linprocfs_doprocenviron, 2057 NULL, &procfs_candebug, NULL, PFS_RD); 2058 pfs_create_link(dir, "exe", &procfs_doprocfile, 2059 NULL, &procfs_notsystem, NULL, 0); 2060 pfs_create_file(dir, "maps", &linprocfs_doprocmaps, 2061 NULL, NULL, NULL, PFS_RD | PFS_AUTODRAIN); 2062 pfs_create_file(dir, "mem", &linprocfs_doprocmem, 2063 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR | PFS_RAW); 2064 pfs_create_file(dir, "mountinfo", &linprocfs_doprocmountinfo, 2065 NULL, NULL, NULL, PFS_RD); 2066 pfs_create_file(dir, "mounts", &linprocfs_domtab, 2067 NULL, NULL, NULL, PFS_RD); 2068 pfs_create_link(dir, "root", &linprocfs_doprocroot, 2069 NULL, NULL, NULL, 0); 2070 pfs_create_file(dir, "stat", &linprocfs_doprocstat, 2071 NULL, NULL, NULL, PFS_RD); 2072 pfs_create_file(dir, "statm", &linprocfs_doprocstatm, 2073 NULL, NULL, NULL, PFS_RD); 2074 pfs_create_file(dir, "status", &linprocfs_doprocstatus, 2075 NULL, NULL, NULL, PFS_RD); 2076 pfs_create_link(dir, "fd", &linprocfs_dofdescfs, 2077 NULL, NULL, NULL, 0); 2078 pfs_create_file(dir, "auxv", &linprocfs_doauxv, 2079 NULL, &procfs_candebug, NULL, PFS_RD|PFS_RAWRD); 2080 pfs_create_file(dir, "limits", &linprocfs_doproclimits, 2081 NULL, NULL, NULL, PFS_RD); 2082 pfs_create_file(dir, "oom_score_adj", &linprocfs_do_oom_score_adj, 2083 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR); 2084 2085 /* /proc/<pid>/task/... */ 2086 dir = pfs_create_dir(dir, "task", linprocfs_dotaskattr, NULL, NULL, 0); 2087 pfs_create_file(dir, ".dummy", &linprocfs_dotaskdummy, 2088 NULL, NULL, NULL, PFS_RD); 2089 2090 /* /proc/scsi/... */ 2091 dir = pfs_create_dir(root, "scsi", NULL, NULL, NULL, 0); 2092 pfs_create_file(dir, "device_info", &linprocfs_doscsidevinfo, 2093 NULL, NULL, NULL, PFS_RD); 2094 pfs_create_file(dir, "scsi", &linprocfs_doscsiscsi, 2095 NULL, NULL, NULL, PFS_RD); 2096 2097 /* /proc/sys/... */ 2098 sys = pfs_create_dir(root, "sys", NULL, NULL, NULL, 0); 2099 2100 /* /proc/sys/kernel/... */ 2101 dir = pfs_create_dir(sys, "kernel", NULL, NULL, NULL, 0); 2102 pfs_create_file(dir, "osrelease", &linprocfs_doosrelease, 2103 NULL, NULL, NULL, PFS_RD); 2104 pfs_create_file(dir, "ostype", &linprocfs_doostype, 2105 NULL, NULL, NULL, PFS_RD); 2106 pfs_create_file(dir, "version", &linprocfs_doosbuild, 2107 NULL, NULL, NULL, PFS_RD); 2108 pfs_create_file(dir, "msgmax", &linprocfs_domsgmax, 2109 NULL, NULL, NULL, PFS_RD); 2110 pfs_create_file(dir, "msgmni", &linprocfs_domsgmni, 2111 NULL, NULL, NULL, PFS_RD); 2112 pfs_create_file(dir, "msgmnb", &linprocfs_domsgmnb, 2113 NULL, NULL, NULL, PFS_RD); 2114 pfs_create_file(dir, "ngroups_max", &linprocfs_dongroups_max, 2115 NULL, NULL, NULL, PFS_RD); 2116 pfs_create_file(dir, "pid_max", &linprocfs_dopid_max, 2117 NULL, NULL, NULL, PFS_RD); 2118 pfs_create_file(dir, "sem", &linprocfs_dosem, 2119 NULL, NULL, NULL, PFS_RD); 2120 pfs_create_file(dir, "shmall", &linprocfs_doshmall, 2121 NULL, NULL, NULL, PFS_RD); 2122 pfs_create_file(dir, "shmmax", &linprocfs_doshmmax, 2123 NULL, NULL, NULL, PFS_RD); 2124 pfs_create_file(dir, "shmmni", &linprocfs_doshmmni, 2125 NULL, NULL, NULL, PFS_RD); 2126 pfs_create_file(dir, "tainted", &linprocfs_dotainted, 2127 NULL, NULL, NULL, PFS_RD); 2128 2129 /* /proc/sys/kernel/random/... */ 2130 dir = pfs_create_dir(dir, "random", NULL, NULL, NULL, 0); 2131 pfs_create_file(dir, "uuid", &linprocfs_douuid, 2132 NULL, NULL, NULL, PFS_RD); 2133 pfs_create_file(dir, "boot_id", &linprocfs_doboot_id, 2134 NULL, NULL, NULL, PFS_RD); 2135 2136 /* /proc/sys/vm/.... */ 2137 dir = pfs_create_dir(sys, "vm", NULL, NULL, NULL, 0); 2138 pfs_create_file(dir, "min_free_kbytes", &linprocfs_dominfree, 2139 NULL, NULL, NULL, PFS_RD); 2140 pfs_create_file(dir, "max_map_count", &linprocfs_domax_map_cnt, 2141 NULL, NULL, NULL, PFS_RD); 2142 2143 return (0); 2144 } 2145 2146 /* 2147 * Destructor 2148 */ 2149 static int 2150 linprocfs_uninit(PFS_INIT_ARGS) 2151 { 2152 2153 /* nothing to do, pseudofs will GC */ 2154 return (0); 2155 } 2156 2157 PSEUDOFS(linprocfs, 1, VFCF_JAIL); 2158 #if defined(__aarch64__) || defined(__amd64__) 2159 MODULE_DEPEND(linprocfs, linux_common, 1, 1, 1); 2160 #else 2161 MODULE_DEPEND(linprocfs, linux, 1, 1, 1); 2162 #endif 2163 MODULE_DEPEND(linprocfs, procfs, 1, 1, 1); 2164 MODULE_DEPEND(linprocfs, sysvmsg, 1, 1, 1); 2165 MODULE_DEPEND(linprocfs, sysvsem, 1, 1, 1); 2166 MODULE_DEPEND(linprocfs, sysvshm, 1, 1, 1); 2167