1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2000 Dag-Erling 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 "opt_inet.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/blist.h> 49 #include <sys/conf.h> 50 #include <sys/exec.h> 51 #include <sys/fcntl.h> 52 #include <sys/filedesc.h> 53 #include <sys/jail.h> 54 #include <sys/kernel.h> 55 #include <sys/limits.h> 56 #include <sys/linker.h> 57 #include <sys/lock.h> 58 #include <sys/malloc.h> 59 #include <sys/msg.h> 60 #include <sys/mutex.h> 61 #include <sys/namei.h> 62 #include <sys/proc.h> 63 #include <sys/ptrace.h> 64 #include <sys/queue.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/time.h> 76 #include <sys/tty.h> 77 #include <sys/user.h> 78 #include <sys/uuid.h> 79 #include <sys/vmmeter.h> 80 #include <sys/vnode.h> 81 #include <sys/bus.h> 82 #include <sys/uio.h> 83 84 #include <net/if.h> 85 #include <net/if_var.h> 86 #include <net/if_types.h> 87 88 #include <net/route.h> 89 #include <net/route/nhop.h> 90 #include <net/route/route_ctl.h> 91 92 #include <vm/vm.h> 93 #include <vm/vm_extern.h> 94 #include <vm/pmap.h> 95 #include <vm/vm_map.h> 96 #include <vm/vm_param.h> 97 #include <vm/vm_object.h> 98 #include <vm/swap_pager.h> 99 100 #include <machine/clock.h> 101 102 #include <geom/geom.h> 103 #include <geom/geom_int.h> 104 105 #if defined(__i386__) || defined(__amd64__) 106 #include <machine/cputypes.h> 107 #include <machine/md_var.h> 108 #endif /* __i386__ || __amd64__ */ 109 110 #include <compat/linux/linux.h> 111 #include <compat/linux/linux_common.h> 112 #include <compat/linux/linux_emul.h> 113 #include <compat/linux/linux_mib.h> 114 #include <compat/linux/linux_misc.h> 115 #include <compat/linux/linux_util.h> 116 #include <fs/pseudofs/pseudofs.h> 117 #include <fs/procfs/procfs.h> 118 119 /* 120 * Various conversion macros 121 */ 122 #define T2J(x) ((long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to jiffies */ 123 #define T2CS(x) ((unsigned long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to centiseconds */ 124 #define T2S(x) ((x) / (stathz ? stathz : hz)) /* ticks to seconds */ 125 #define B2K(x) ((x) >> 10) /* bytes to kbytes */ 126 #define B2P(x) ((x) >> PAGE_SHIFT) /* bytes to pages */ 127 #define P2B(x) ((x) << PAGE_SHIFT) /* pages to bytes */ 128 #define P2K(x) ((x) << (PAGE_SHIFT - 10)) /* pages to kbytes */ 129 #define TV2J(x) ((x)->tv_sec * 100UL + (x)->tv_usec / 10000) 130 131 /** 132 * @brief Mapping of ki_stat in struct kinfo_proc to the linux state 133 * 134 * The linux procfs state field displays one of the characters RSDZTW to 135 * denote running, sleeping in an interruptible wait, waiting in an 136 * uninterruptible disk sleep, a zombie process, process is being traced 137 * or stopped, or process is paging respectively. 138 * 139 * Our struct kinfo_proc contains the variable ki_stat which contains a 140 * value out of SIDL, SRUN, SSLEEP, SSTOP, SZOMB, SWAIT and SLOCK. 141 * 142 * This character array is used with ki_stati-1 as an index and tries to 143 * map our states to suitable linux states. 144 */ 145 static char linux_state[] = "RRSTZDD"; 146 147 /* 148 * Filler function for proc/meminfo 149 */ 150 static int 151 linprocfs_domeminfo(PFS_FILL_ARGS) 152 { 153 unsigned long memtotal; /* total memory in bytes */ 154 unsigned long memfree; /* free memory in bytes */ 155 unsigned long cached; /* page cache */ 156 unsigned long buffers; /* buffer cache */ 157 unsigned long long swaptotal; /* total swap space in bytes */ 158 unsigned long long swapused; /* used swap space in bytes */ 159 unsigned long long swapfree; /* free swap space in bytes */ 160 size_t sz; 161 int error, i, j; 162 163 memtotal = physmem * PAGE_SIZE; 164 memfree = (unsigned long)vm_free_count() * PAGE_SIZE; 165 swap_pager_status(&i, &j); 166 swaptotal = (unsigned long long)i * PAGE_SIZE; 167 swapused = (unsigned long long)j * PAGE_SIZE; 168 swapfree = swaptotal - swapused; 169 170 /* 171 * This value may exclude wired pages, but we have no good way of 172 * accounting for that. 173 */ 174 cached = 175 (vm_active_count() + vm_inactive_count() + vm_laundry_count()) * 176 PAGE_SIZE; 177 178 sz = sizeof(buffers); 179 error = kernel_sysctlbyname(curthread, "vfs.bufspace", &buffers, &sz, 180 NULL, 0, 0, 0); 181 if (error != 0) 182 buffers = 0; 183 184 sbuf_printf(sb, 185 "MemTotal: %9lu kB\n" 186 "MemFree: %9lu kB\n" 187 "Buffers: %9lu kB\n" 188 "Cached: %9lu kB\n" 189 "SwapTotal:%9llu kB\n" 190 "SwapFree: %9llu kB\n", 191 B2K(memtotal), B2K(memfree), B2K(buffers), 192 B2K(cached), B2K(swaptotal), B2K(swapfree)); 193 194 return (0); 195 } 196 197 #if defined(__i386__) || defined(__amd64__) 198 /* 199 * Filler function for proc/cpuinfo (i386 & amd64 version) 200 */ 201 static int 202 linprocfs_docpuinfo(PFS_FILL_ARGS) 203 { 204 int hw_model[2]; 205 char model[128]; 206 uint64_t freq; 207 size_t size; 208 u_int cache_size[4]; 209 u_int regs[4] = { 0 }; 210 int fqmhz, fqkhz; 211 int i, j; 212 213 /* 214 * We default the flags to include all non-conflicting flags, 215 * and the Intel versions of conflicting flags. 216 */ 217 static char *cpu_feature_names[] = { 218 /* 0 */ "fpu", "vme", "de", "pse", 219 /* 4 */ "tsc", "msr", "pae", "mce", 220 /* 8 */ "cx8", "apic", "", "sep", 221 /* 12 */ "mtrr", "pge", "mca", "cmov", 222 /* 16 */ "pat", "pse36", "pn", "clflush", 223 /* 20 */ "", "dts", "acpi", "mmx", 224 /* 24 */ "fxsr", "sse", "sse2", "ss", 225 /* 28 */ "ht", "tm", "ia64", "pbe" 226 }; 227 228 static char *amd_feature_names[] = { 229 /* 0 */ "", "", "", "", 230 /* 4 */ "", "", "", "", 231 /* 8 */ "", "", "", "syscall", 232 /* 12 */ "", "", "", "", 233 /* 16 */ "", "", "", "mp", 234 /* 20 */ "nx", "", "mmxext", "", 235 /* 24 */ "", "fxsr_opt", "pdpe1gb", "rdtscp", 236 /* 28 */ "", "lm", "3dnowext", "3dnow" 237 }; 238 239 static char *cpu_feature2_names[] = { 240 /* 0 */ "pni", "pclmulqdq", "dtes64", "monitor", 241 /* 4 */ "ds_cpl", "vmx", "smx", "est", 242 /* 8 */ "tm2", "ssse3", "cid", "sdbg", 243 /* 12 */ "fma", "cx16", "xtpr", "pdcm", 244 /* 16 */ "", "pcid", "dca", "sse4_1", 245 /* 20 */ "sse4_2", "x2apic", "movbe", "popcnt", 246 /* 24 */ "tsc_deadline_timer", "aes", "xsave", "", 247 /* 28 */ "avx", "f16c", "rdrand", "hypervisor" 248 }; 249 250 static char *amd_feature2_names[] = { 251 /* 0 */ "lahf_lm", "cmp_legacy", "svm", "extapic", 252 /* 4 */ "cr8_legacy", "abm", "sse4a", "misalignsse", 253 /* 8 */ "3dnowprefetch", "osvw", "ibs", "xop", 254 /* 12 */ "skinit", "wdt", "", "lwp", 255 /* 16 */ "fma4", "tce", "", "nodeid_msr", 256 /* 20 */ "", "tbm", "topoext", "perfctr_core", 257 /* 24 */ "perfctr_nb", "", "bpext", "ptsc", 258 /* 28 */ "perfctr_llc", "mwaitx", "", "" 259 }; 260 261 static char *cpu_stdext_feature_names[] = { 262 /* 0 */ "fsgsbase", "tsc_adjust", "sgx", "bmi1", 263 /* 4 */ "hle", "avx2", "", "smep", 264 /* 8 */ "bmi2", "erms", "invpcid", "rtm", 265 /* 12 */ "cqm", "", "mpx", "rdt_a", 266 /* 16 */ "avx512f", "avx512dq", "rdseed", "adx", 267 /* 20 */ "smap", "avx512ifma", "", "clflushopt", 268 /* 24 */ "clwb", "intel_pt", "avx512pf", "avx512er", 269 /* 28 */ "avx512cd", "sha_ni", "avx512bw", "avx512vl" 270 }; 271 272 static char *cpu_stdext_feature2_names[] = { 273 /* 0 */ "prefetchwt1", "avx512vbmi", "umip", "pku", 274 /* 4 */ "ospke", "waitpkg", "avx512_vbmi2", "", 275 /* 8 */ "gfni", "vaes", "vpclmulqdq", "avx512_vnni", 276 /* 12 */ "avx512_bitalg", "", "avx512_vpopcntdq", "", 277 /* 16 */ "", "", "", "", 278 /* 20 */ "", "", "rdpid", "", 279 /* 24 */ "", "cldemote", "", "movdiri", 280 /* 28 */ "movdir64b", "enqcmd", "sgx_lc", "" 281 }; 282 283 static char *cpu_stdext_feature3_names[] = { 284 /* 0 */ "", "", "avx512_4vnniw", "avx512_4fmaps", 285 /* 4 */ "fsrm", "", "", "", 286 /* 8 */ "avx512_vp2intersect", "", "md_clear", "", 287 /* 12 */ "", "", "", "", 288 /* 16 */ "", "", "pconfig", "", 289 /* 20 */ "", "", "", "", 290 /* 24 */ "", "", "ibrs", "stibp", 291 /* 28 */ "flush_l1d", "arch_capabilities", "core_capabilities", "ssbd" 292 }; 293 294 static char *cpu_stdext_feature_l1_names[] = { 295 /* 0 */ "xsaveopt", "xsavec", "xgetbv1", "xsaves", 296 /* 4 */ "xfd" 297 }; 298 299 static char *power_flags[] = { 300 "ts", "fid", "vid", 301 "ttp", "tm", "stc", 302 "100mhzsteps", "hwpstate", "", 303 "cpb", "eff_freq_ro", "proc_feedback", 304 "acc_power", 305 }; 306 307 hw_model[0] = CTL_HW; 308 hw_model[1] = HW_MODEL; 309 model[0] = '\0'; 310 size = sizeof(model); 311 if (kernel_sysctl(td, hw_model, 2, &model, &size, 0, 0, 0, 0) != 0) 312 strcpy(model, "unknown"); 313 #ifdef __i386__ 314 switch (cpu_vendor_id) { 315 case CPU_VENDOR_AMD: 316 if (cpu_class < CPUCLASS_686) 317 cpu_feature_names[16] = "fcmov"; 318 break; 319 case CPU_VENDOR_CYRIX: 320 cpu_feature_names[24] = "cxmmx"; 321 break; 322 } 323 #endif 324 if (cpu_exthigh >= 0x80000006) 325 do_cpuid(0x80000006, cache_size); 326 else 327 memset(cache_size, 0, sizeof(cache_size)); 328 for (i = 0; i < mp_ncpus; ++i) { 329 fqmhz = 0; 330 fqkhz = 0; 331 freq = atomic_load_acq_64(&tsc_freq); 332 if (freq != 0) { 333 fqmhz = (freq + 4999) / 1000000; 334 fqkhz = ((freq + 4999) / 10000) % 100; 335 } 336 sbuf_printf(sb, 337 "processor\t: %d\n" 338 "vendor_id\t: %.20s\n" 339 "cpu family\t: %u\n" 340 "model\t\t: %u\n" 341 "model name\t: %s\n" 342 "stepping\t: %u\n" 343 "cpu MHz\t\t: %d.%02d\n" 344 "cache size\t: %d KB\n" 345 "physical id\t: %d\n" 346 "siblings\t: %d\n" 347 "core id\t\t: %d\n" 348 "cpu cores\t: %d\n" 349 "apicid\t\t: %d\n" 350 "initial apicid\t: %d\n" 351 "fpu\t\t: %s\n" 352 "fpu_exception\t: %s\n" 353 "cpuid level\t: %d\n" 354 "wp\t\t: %s\n", 355 i, cpu_vendor, CPUID_TO_FAMILY(cpu_id), 356 CPUID_TO_MODEL(cpu_id), model, cpu_id & CPUID_STEPPING, 357 fqmhz, fqkhz, 358 (cache_size[2] >> 16), 0, mp_ncpus, i, mp_ncpus, 359 i, i, /*cpu_id & CPUID_LOCAL_APIC_ID ??*/ 360 (cpu_feature & CPUID_FPU) ? "yes" : "no", "yes", 361 CPUID_TO_FAMILY(cpu_id), "yes"); 362 sbuf_cat(sb, "flags\t\t:"); 363 for (j = 0; j < nitems(cpu_feature_names); j++) 364 if (cpu_feature & (1 << j) && 365 cpu_feature_names[j][0] != '\0') 366 sbuf_printf(sb, " %s", cpu_feature_names[j]); 367 for (j = 0; j < nitems(amd_feature_names); j++) 368 if (amd_feature & (1 << j) && 369 amd_feature_names[j][0] != '\0') 370 sbuf_printf(sb, " %s", amd_feature_names[j]); 371 for (j = 0; j < nitems(cpu_feature2_names); j++) 372 if (cpu_feature2 & (1 << j) && 373 cpu_feature2_names[j][0] != '\0') 374 sbuf_printf(sb, " %s", cpu_feature2_names[j]); 375 for (j = 0; j < nitems(amd_feature2_names); j++) 376 if (amd_feature2 & (1 << j) && 377 amd_feature2_names[j][0] != '\0') 378 sbuf_printf(sb, " %s", amd_feature2_names[j]); 379 for (j = 0; j < nitems(cpu_stdext_feature_names); j++) 380 if (cpu_stdext_feature & (1 << j) && 381 cpu_stdext_feature_names[j][0] != '\0') 382 sbuf_printf(sb, " %s", 383 cpu_stdext_feature_names[j]); 384 if (tsc_is_invariant) 385 sbuf_cat(sb, " constant_tsc"); 386 for (j = 0; j < nitems(cpu_stdext_feature2_names); j++) 387 if (cpu_stdext_feature2 & (1 << j) && 388 cpu_stdext_feature2_names[j][0] != '\0') 389 sbuf_printf(sb, " %s", 390 cpu_stdext_feature2_names[j]); 391 for (j = 0; j < nitems(cpu_stdext_feature3_names); j++) 392 if (cpu_stdext_feature3 & (1 << j) && 393 cpu_stdext_feature3_names[j][0] != '\0') 394 sbuf_printf(sb, " %s", 395 cpu_stdext_feature3_names[j]); 396 if ((cpu_feature2 & CPUID2_XSAVE) != 0) { 397 cpuid_count(0xd, 0x1, regs); 398 for (j = 0; j < nitems(cpu_stdext_feature_l1_names); j++) 399 if (regs[0] & (1 << j) && 400 cpu_stdext_feature_l1_names[j][0] != '\0') 401 sbuf_printf(sb, " %s", 402 cpu_stdext_feature_l1_names[j]); 403 } 404 sbuf_cat(sb, "\n"); 405 sbuf_printf(sb, 406 "bugs\t\t: %s\n" 407 "bogomips\t: %d.%02d\n" 408 "clflush size\t: %d\n" 409 "cache_alignment\t: %d\n" 410 "address sizes\t: %d bits physical, %d bits virtual\n", 411 #if defined(I586_CPU) && !defined(NO_F00F_HACK) 412 (has_f00f_bug) ? "Intel F00F" : "", 413 #else 414 "", 415 #endif 416 fqmhz * 2, fqkhz, 417 cpu_clflush_line_size, cpu_clflush_line_size, 418 cpu_maxphyaddr, 419 (cpu_maxphyaddr > 32) ? 48 : 0); 420 sbuf_cat(sb, "power management: "); 421 for (j = 0; j < nitems(power_flags); j++) 422 if (amd_pminfo & (1 << j)) 423 sbuf_printf(sb, " %s", power_flags[j]); 424 sbuf_cat(sb, "\n\n"); 425 426 /* XXX per-cpu vendor / class / model / id? */ 427 } 428 sbuf_cat(sb, "\n"); 429 430 return (0); 431 } 432 #else 433 /* ARM64TODO: implement non-stubbed linprocfs_docpuinfo */ 434 static int 435 linprocfs_docpuinfo(PFS_FILL_ARGS) 436 { 437 int i; 438 439 for (i = 0; i < mp_ncpus; ++i) { 440 sbuf_printf(sb, 441 "processor\t: %d\n" 442 "BogoMIPS\t: %d.%02d\n", 443 i, 0, 0); 444 sbuf_cat(sb, "Features\t: "); 445 sbuf_cat(sb, "\n"); 446 sbuf_printf(sb, 447 "CPU implementer\t: \n" 448 "CPU architecture: \n" 449 "CPU variant\t: 0x%x\n" 450 "CPU part\t: 0x%x\n" 451 "CPU revision\t: %d\n", 452 0, 0, 0); 453 sbuf_cat(sb, "\n"); 454 } 455 456 return (0); 457 } 458 #endif /* __i386__ || __amd64__ */ 459 460 static const char *path_slash_sys = "/sys"; 461 static const char *fstype_sysfs = "sysfs"; 462 463 static int 464 _mtab_helper(const struct pfs_node *pn, const struct statfs *sp, 465 const char **mntfrom, const char **mntto, const char **fstype) 466 { 467 /* determine device name */ 468 *mntfrom = sp->f_mntfromname; 469 470 /* determine mount point */ 471 *mntto = sp->f_mntonname; 472 473 /* determine fs type */ 474 *fstype = sp->f_fstypename; 475 if (strcmp(*fstype, pn->pn_info->pi_name) == 0) 476 *mntfrom = *fstype = "proc"; 477 else if (strcmp(*fstype, "procfs") == 0) 478 return (ECANCELED); 479 480 if (strcmp(*fstype, "autofs") == 0) { 481 /* 482 * FreeBSD uses eg "map -hosts", whereas Linux 483 * expects just "-hosts". 484 */ 485 if (strncmp(*mntfrom, "map ", 4) == 0) 486 *mntfrom += 4; 487 } 488 489 if (strcmp(*fstype, "linsysfs") == 0) { 490 *mntfrom = path_slash_sys; 491 *fstype = fstype_sysfs; 492 } else { 493 /* For Linux msdosfs is called vfat */ 494 if (strcmp(*fstype, "msdosfs") == 0) 495 *fstype = "vfat"; 496 } 497 return (0); 498 } 499 500 static void 501 _sbuf_mntoptions_helper(struct sbuf *sb, uint64_t f_flags) 502 { 503 sbuf_cat(sb, (f_flags & MNT_RDONLY) ? "ro" : "rw"); 504 #define ADD_OPTION(opt, name) \ 505 if (f_flags & (opt)) sbuf_cat(sb, "," name); 506 ADD_OPTION(MNT_SYNCHRONOUS, "sync"); 507 ADD_OPTION(MNT_NOEXEC, "noexec"); 508 ADD_OPTION(MNT_NOSUID, "nosuid"); 509 ADD_OPTION(MNT_UNION, "union"); 510 ADD_OPTION(MNT_ASYNC, "async"); 511 ADD_OPTION(MNT_SUIDDIR, "suiddir"); 512 ADD_OPTION(MNT_NOSYMFOLLOW, "nosymfollow"); 513 ADD_OPTION(MNT_NOATIME, "noatime"); 514 #undef ADD_OPTION 515 } 516 517 /* 518 * Filler function for proc/mtab and proc/<pid>/mounts. 519 * 520 * /proc/mtab doesn't exist in Linux' procfs, but is included here so 521 * users can symlink /compat/linux/etc/mtab to /proc/mtab 522 */ 523 static int 524 linprocfs_domtab(PFS_FILL_ARGS) 525 { 526 const char *mntto, *mntfrom, *fstype; 527 char *dlep, *flep; 528 struct vnode *vp; 529 struct pwd *pwd; 530 size_t lep_len; 531 int error; 532 struct statfs *buf, *sp; 533 size_t count; 534 535 /* 536 * Resolve emulation tree prefix 537 */ 538 flep = NULL; 539 pwd = pwd_hold(td); 540 vp = pwd->pwd_adir; 541 error = vn_fullpath_global(vp, &dlep, &flep); 542 pwd_drop(pwd); 543 if (error != 0) 544 return (error); 545 lep_len = strlen(dlep); 546 547 buf = NULL; 548 error = kern_getfsstat(td, &buf, SIZE_T_MAX, &count, 549 UIO_SYSSPACE, MNT_WAIT); 550 if (error != 0) { 551 free(buf, M_TEMP); 552 free(flep, M_TEMP); 553 return (error); 554 } 555 556 for (sp = buf; count > 0; sp++, count--) { 557 error = _mtab_helper(pn, sp, &mntfrom, &mntto, &fstype); 558 if (error != 0) { 559 MPASS(error == ECANCELED); 560 continue; 561 } 562 563 /* determine mount point */ 564 if (strncmp(mntto, dlep, lep_len) == 0 && mntto[lep_len] == '/') 565 mntto += lep_len; 566 567 sbuf_printf(sb, "%s %s %s ", mntfrom, mntto, fstype); 568 _sbuf_mntoptions_helper(sb, sp->f_flags); 569 /* a real Linux mtab will also show NFS options */ 570 sbuf_printf(sb, " 0 0\n"); 571 } 572 573 free(buf, M_TEMP); 574 free(flep, M_TEMP); 575 return (error); 576 } 577 578 static int 579 linprocfs_doprocmountinfo(PFS_FILL_ARGS) 580 { 581 const char *mntfrom, *mntto, *fstype; 582 char *dlep, *flep; 583 struct statfs *buf, *sp; 584 size_t count, lep_len; 585 struct vnode *vp; 586 struct pwd *pwd; 587 int error; 588 589 /* 590 * Resolve emulation tree prefix 591 */ 592 flep = NULL; 593 pwd = pwd_hold(td); 594 vp = pwd->pwd_adir; 595 error = vn_fullpath_global(vp, &dlep, &flep); 596 pwd_drop(pwd); 597 if (error != 0) 598 return (error); 599 lep_len = strlen(dlep); 600 601 buf = NULL; 602 error = kern_getfsstat(td, &buf, SIZE_T_MAX, &count, 603 UIO_SYSSPACE, MNT_WAIT); 604 if (error != 0) 605 goto out; 606 607 for (sp = buf; count > 0; sp++, count--) { 608 error = _mtab_helper(pn, sp, &mntfrom, &mntto, &fstype); 609 if (error != 0) { 610 MPASS(error == ECANCELED); 611 continue; 612 } 613 614 if (strncmp(mntto, dlep, lep_len) == 0 && mntto[lep_len] == '/') 615 mntto += lep_len; 616 #if 0 617 /* 618 * If the prefix is a chroot, and this mountpoint is not under 619 * the prefix, we should skip it. Leave it for now for 620 * consistency with procmtab above. 621 */ 622 else 623 continue; 624 #endif 625 626 /* 627 * (1) mount id 628 * 629 * (2) parent mount id -- we don't have this cheaply, so 630 * provide a dummy value 631 * 632 * (3) major:minor -- ditto 633 * 634 * (4) root filesystem mount -- probably a namespaces thing 635 * 636 * (5) mountto path 637 */ 638 sbuf_printf(sb, "%u 0 0:0 / %s ", 639 sp->f_fsid.val[0] ^ sp->f_fsid.val[1], mntto); 640 /* (6) mount options */ 641 _sbuf_mntoptions_helper(sb, sp->f_flags); 642 /* 643 * (7) zero or more optional fields -- again, namespace related 644 * 645 * (8) End of variable length fields separator ("-") 646 * 647 * (9) fstype 648 * 649 * (10) mount from 650 * 651 * (11) "superblock" options -- like (6), but different 652 * semantics in Linux 653 */ 654 sbuf_printf(sb, " - %s %s %s\n", fstype, mntfrom, 655 (sp->f_flags & MNT_RDONLY) ? "ro" : "rw"); 656 } 657 658 error = 0; 659 out: 660 free(buf, M_TEMP); 661 free(flep, M_TEMP); 662 return (error); 663 } 664 665 /* 666 * Filler function for proc/partitions 667 */ 668 static int 669 linprocfs_dopartitions(PFS_FILL_ARGS) 670 { 671 struct g_class *cp; 672 struct g_geom *gp; 673 struct g_provider *pp; 674 int major, minor; 675 676 g_topology_lock(); 677 sbuf_printf(sb, "major minor #blocks name rio rmerge rsect " 678 "ruse wio wmerge wsect wuse running use aveq\n"); 679 680 LIST_FOREACH(cp, &g_classes, class) { 681 if (strcmp(cp->name, "DISK") == 0 || 682 strcmp(cp->name, "PART") == 0) 683 LIST_FOREACH(gp, &cp->geom, geom) { 684 LIST_FOREACH(pp, &gp->provider, provider) { 685 if (linux_driver_get_major_minor( 686 pp->name, &major, &minor) != 0) { 687 major = 0; 688 minor = 0; 689 } 690 sbuf_printf(sb, "%d %d %lld %s " 691 "%d %d %d %d %d " 692 "%d %d %d %d %d %d\n", 693 major, minor, 694 (long long)pp->mediasize, pp->name, 695 0, 0, 0, 0, 0, 696 0, 0, 0, 0, 0, 0); 697 } 698 } 699 } 700 g_topology_unlock(); 701 702 return (0); 703 } 704 705 /* 706 * Filler function for proc/stat 707 * 708 * Output depends on kernel version: 709 * 710 * v2.5.40 <= 711 * user nice system idle 712 * v2.5.41 713 * user nice system idle iowait 714 * v2.6.11 715 * user nice system idle iowait irq softirq steal 716 * v2.6.24 717 * user nice system idle iowait irq softirq steal guest 718 * v2.6.33 >= 719 * user nice system idle iowait irq softirq steal guest guest_nice 720 */ 721 static int 722 linprocfs_dostat(PFS_FILL_ARGS) 723 { 724 struct pcpu *pcpu; 725 long cp_time[CPUSTATES]; 726 long *cp; 727 struct timeval boottime; 728 int i; 729 char *zero_pad; 730 bool has_intr = true; 731 732 if (linux_kernver(td) >= LINUX_KERNVER(2,6,33)) { 733 zero_pad = " 0 0 0 0\n"; 734 } else if (linux_kernver(td) >= LINUX_KERNVER(2,6,24)) { 735 zero_pad = " 0 0 0\n"; 736 } else if (linux_kernver(td) >= LINUX_KERNVER(2,6,11)) { 737 zero_pad = " 0 0\n"; 738 } else if (linux_kernver(td) >= LINUX_KERNVER(2,5,41)) { 739 has_intr = false; 740 zero_pad = " 0\n"; 741 } else { 742 has_intr = false; 743 zero_pad = "\n"; 744 } 745 746 read_cpu_time(cp_time); 747 getboottime(&boottime); 748 /* Parameters common to all versions */ 749 sbuf_printf(sb, "cpu %lu %lu %lu %lu", 750 T2J(cp_time[CP_USER]), 751 T2J(cp_time[CP_NICE]), 752 T2J(cp_time[CP_SYS]), 753 T2J(cp_time[CP_IDLE])); 754 755 /* Print interrupt stats if available */ 756 if (has_intr) { 757 sbuf_printf(sb, " 0 %lu", T2J(cp_time[CP_INTR])); 758 } 759 760 /* Pad out remaining fields depending on version */ 761 sbuf_printf(sb, "%s", zero_pad); 762 763 CPU_FOREACH(i) { 764 pcpu = pcpu_find(i); 765 cp = pcpu->pc_cp_time; 766 sbuf_printf(sb, "cpu%d %lu %lu %lu %lu", i, 767 T2J(cp[CP_USER]), 768 T2J(cp[CP_NICE]), 769 T2J(cp[CP_SYS]), 770 T2J(cp[CP_IDLE])); 771 772 if (has_intr) { 773 sbuf_printf(sb, " 0 %lu", T2J(cp[CP_INTR])); 774 } 775 776 sbuf_printf(sb, "%s", zero_pad); 777 } 778 sbuf_printf(sb, 779 "disk 0 0 0 0\n" 780 "page %ju %ju\n" 781 "swap %ju %ju\n" 782 "intr %ju\n" 783 "ctxt %ju\n" 784 "btime %lld\n", 785 (uintmax_t)VM_CNT_FETCH(v_vnodepgsin), 786 (uintmax_t)VM_CNT_FETCH(v_vnodepgsout), 787 (uintmax_t)VM_CNT_FETCH(v_swappgsin), 788 (uintmax_t)VM_CNT_FETCH(v_swappgsout), 789 (uintmax_t)VM_CNT_FETCH(v_intr), 790 (uintmax_t)VM_CNT_FETCH(v_swtch), 791 (long long)boottime.tv_sec); 792 return (0); 793 } 794 795 static int 796 linprocfs_doswaps(PFS_FILL_ARGS) 797 { 798 struct xswdev xsw; 799 uintmax_t total, used; 800 int n; 801 char devname[SPECNAMELEN + 1]; 802 803 sbuf_printf(sb, "Filename\t\t\t\tType\t\tSize\tUsed\tPriority\n"); 804 for (n = 0; ; n++) { 805 if (swap_dev_info(n, &xsw, devname, sizeof(devname)) != 0) 806 break; 807 total = (uintmax_t)xsw.xsw_nblks * PAGE_SIZE / 1024; 808 used = (uintmax_t)xsw.xsw_used * PAGE_SIZE / 1024; 809 810 /* 811 * The space and not tab after the device name is on 812 * purpose. Linux does so. 813 */ 814 sbuf_printf(sb, "/dev/%-34s unknown\t\t%jd\t%jd\t-1\n", 815 devname, total, used); 816 } 817 return (0); 818 } 819 820 /* 821 * Filler function for proc/uptime 822 */ 823 static int 824 linprocfs_douptime(PFS_FILL_ARGS) 825 { 826 long cp_time[CPUSTATES]; 827 struct timeval tv; 828 829 getmicrouptime(&tv); 830 read_cpu_time(cp_time); 831 sbuf_printf(sb, "%lld.%02ld %ld.%02lu\n", 832 (long long)tv.tv_sec, tv.tv_usec / 10000, 833 T2S(cp_time[CP_IDLE] / mp_ncpus), 834 T2CS(cp_time[CP_IDLE] / mp_ncpus) % 100); 835 return (0); 836 } 837 838 /* 839 * Get OS build date 840 */ 841 static void 842 linprocfs_osbuild(struct thread *td, struct sbuf *sb) 843 { 844 #if 0 845 char osbuild[256]; 846 char *cp1, *cp2; 847 848 strncpy(osbuild, version, 256); 849 osbuild[255] = '\0'; 850 cp1 = strstr(osbuild, "\n"); 851 cp2 = strstr(osbuild, ":"); 852 if (cp1 && cp2) { 853 *cp1 = *cp2 = '\0'; 854 cp1 = strstr(osbuild, "#"); 855 } else 856 cp1 = NULL; 857 if (cp1) 858 sbuf_printf(sb, "%s%s", cp1, cp2 + 1); 859 else 860 #endif 861 sbuf_cat(sb, "#4 Sun Dec 18 04:30:00 CET 1977"); 862 } 863 864 /* 865 * Get OS builder 866 */ 867 static void 868 linprocfs_osbuilder(struct thread *td, struct sbuf *sb) 869 { 870 #if 0 871 char builder[256]; 872 char *cp; 873 874 cp = strstr(version, "\n "); 875 if (cp) { 876 strncpy(builder, cp + 5, 256); 877 builder[255] = '\0'; 878 cp = strstr(builder, ":"); 879 if (cp) 880 *cp = '\0'; 881 } 882 if (cp) 883 sbuf_cat(sb, builder); 884 else 885 #endif 886 sbuf_cat(sb, "des@freebsd.org"); 887 } 888 889 /* 890 * Filler function for proc/version 891 */ 892 static int 893 linprocfs_doversion(PFS_FILL_ARGS) 894 { 895 char osname[LINUX_MAX_UTSNAME]; 896 char osrelease[LINUX_MAX_UTSNAME]; 897 898 linux_get_osname(td, osname); 899 linux_get_osrelease(td, osrelease); 900 sbuf_printf(sb, "%s version %s (", osname, osrelease); 901 linprocfs_osbuilder(td, sb); 902 sbuf_cat(sb, ") (gcc version " __VERSION__ ") "); 903 linprocfs_osbuild(td, sb); 904 sbuf_cat(sb, "\n"); 905 906 return (0); 907 } 908 909 /* 910 * Filler function for proc/loadavg 911 */ 912 static int 913 linprocfs_doloadavg(PFS_FILL_ARGS) 914 { 915 916 sbuf_printf(sb, 917 "%d.%02d %d.%02d %d.%02d %d/%d %d\n", 918 (int)(averunnable.ldavg[0] / averunnable.fscale), 919 (int)(averunnable.ldavg[0] * 100 / averunnable.fscale % 100), 920 (int)(averunnable.ldavg[1] / averunnable.fscale), 921 (int)(averunnable.ldavg[1] * 100 / averunnable.fscale % 100), 922 (int)(averunnable.ldavg[2] / averunnable.fscale), 923 (int)(averunnable.ldavg[2] * 100 / averunnable.fscale % 100), 924 1, /* number of running tasks */ 925 nprocs, /* number of tasks */ 926 lastpid /* the last pid */ 927 ); 928 return (0); 929 } 930 931 static int 932 linprocfs_get_tty_nr(struct proc *p) 933 { 934 struct session *sp; 935 const char *ttyname; 936 int error, major, minor, nr; 937 938 PROC_LOCK_ASSERT(p, MA_OWNED); 939 sx_assert(&proctree_lock, SX_LOCKED); 940 941 if ((p->p_flag & P_CONTROLT) == 0) 942 return (-1); 943 944 sp = p->p_pgrp->pg_session; 945 if (sp == NULL) 946 return (-1); 947 948 ttyname = devtoname(sp->s_ttyp->t_dev); 949 error = linux_driver_get_major_minor(ttyname, &major, &minor); 950 if (error != 0) 951 return (-1); 952 953 nr = makedev(major, minor); 954 return (nr); 955 } 956 957 /* 958 * Filler function for proc/pid/stat 959 */ 960 static int 961 linprocfs_doprocstat(PFS_FILL_ARGS) 962 { 963 struct kinfo_proc kp; 964 struct timeval boottime; 965 char state; 966 static int ratelimit = 0; 967 int tty_nr; 968 vm_offset_t startcode, startdata; 969 970 getboottime(&boottime); 971 sx_slock(&proctree_lock); 972 PROC_LOCK(p); 973 fill_kinfo_proc(p, &kp); 974 tty_nr = linprocfs_get_tty_nr(p); 975 sx_sunlock(&proctree_lock); 976 if (p->p_vmspace) { 977 startcode = (vm_offset_t)p->p_vmspace->vm_taddr; 978 startdata = (vm_offset_t)p->p_vmspace->vm_daddr; 979 } else { 980 startcode = 0; 981 startdata = 0; 982 } 983 sbuf_printf(sb, "%d", p->p_pid); 984 #define PS_ADD(name, fmt, arg) sbuf_printf(sb, " " fmt, arg) 985 PS_ADD("comm", "(%s)", p->p_comm); 986 if (kp.ki_stat > sizeof(linux_state)) { 987 state = 'R'; 988 989 if (ratelimit == 0) { 990 printf("linprocfs: don't know how to handle unknown FreeBSD state %d/%zd, mapping to R\n", 991 kp.ki_stat, sizeof(linux_state)); 992 ++ratelimit; 993 } 994 } else 995 state = linux_state[kp.ki_stat - 1]; 996 PS_ADD("state", "%c", state); 997 PS_ADD("ppid", "%d", p->p_pptr ? p->p_pptr->p_pid : 0); 998 PS_ADD("pgrp", "%d", p->p_pgid); 999 PS_ADD("session", "%d", p->p_session->s_sid); 1000 PROC_UNLOCK(p); 1001 PS_ADD("tty", "%d", tty_nr); 1002 PS_ADD("tpgid", "%d", kp.ki_tpgid); 1003 PS_ADD("flags", "%u", 0); /* XXX */ 1004 PS_ADD("minflt", "%lu", kp.ki_rusage.ru_minflt); 1005 PS_ADD("cminflt", "%lu", kp.ki_rusage_ch.ru_minflt); 1006 PS_ADD("majflt", "%lu", kp.ki_rusage.ru_majflt); 1007 PS_ADD("cmajflt", "%lu", kp.ki_rusage_ch.ru_majflt); 1008 PS_ADD("utime", "%ld", TV2J(&kp.ki_rusage.ru_utime)); 1009 PS_ADD("stime", "%ld", TV2J(&kp.ki_rusage.ru_stime)); 1010 PS_ADD("cutime", "%ld", TV2J(&kp.ki_rusage_ch.ru_utime)); 1011 PS_ADD("cstime", "%ld", TV2J(&kp.ki_rusage_ch.ru_stime)); 1012 PS_ADD("priority", "%d", kp.ki_pri.pri_user); 1013 PS_ADD("nice", "%d", kp.ki_nice); /* 19 (nicest) to -19 */ 1014 PS_ADD("0", "%d", 0); /* removed field */ 1015 PS_ADD("itrealvalue", "%d", 0); /* XXX */ 1016 PS_ADD("starttime", "%lu", TV2J(&kp.ki_start) - TV2J(&boottime)); 1017 PS_ADD("vsize", "%ju", (uintmax_t)kp.ki_size); 1018 PS_ADD("rss", "%ju", (uintmax_t)kp.ki_rssize); 1019 PS_ADD("rlim", "%lu", kp.ki_rusage.ru_maxrss); 1020 PS_ADD("startcode", "%ju", (uintmax_t)startcode); 1021 PS_ADD("endcode", "%ju", (uintmax_t)startdata); 1022 PS_ADD("startstack", "%u", 0); /* XXX */ 1023 PS_ADD("kstkesp", "%u", 0); /* XXX */ 1024 PS_ADD("kstkeip", "%u", 0); /* XXX */ 1025 PS_ADD("signal", "%u", 0); /* XXX */ 1026 PS_ADD("blocked", "%u", 0); /* XXX */ 1027 PS_ADD("sigignore", "%u", 0); /* XXX */ 1028 PS_ADD("sigcatch", "%u", 0); /* XXX */ 1029 PS_ADD("wchan", "%u", 0); /* XXX */ 1030 PS_ADD("nswap", "%lu", kp.ki_rusage.ru_nswap); 1031 PS_ADD("cnswap", "%lu", kp.ki_rusage_ch.ru_nswap); 1032 PS_ADD("exitsignal", "%d", 0); /* XXX */ 1033 PS_ADD("processor", "%u", kp.ki_lastcpu); 1034 PS_ADD("rt_priority", "%u", 0); /* XXX */ /* >= 2.5.19 */ 1035 PS_ADD("policy", "%u", kp.ki_pri.pri_class); /* >= 2.5.19 */ 1036 #undef PS_ADD 1037 sbuf_putc(sb, '\n'); 1038 1039 return (0); 1040 } 1041 1042 /* 1043 * Filler function for proc/pid/statm 1044 */ 1045 static int 1046 linprocfs_doprocstatm(PFS_FILL_ARGS) 1047 { 1048 struct kinfo_proc kp; 1049 segsz_t lsize; 1050 1051 sx_slock(&proctree_lock); 1052 PROC_LOCK(p); 1053 fill_kinfo_proc(p, &kp); 1054 PROC_UNLOCK(p); 1055 sx_sunlock(&proctree_lock); 1056 1057 /* 1058 * See comments in linprocfs_doprocstatus() regarding the 1059 * computation of lsize. 1060 */ 1061 /* size resident share trs drs lrs dt */ 1062 sbuf_printf(sb, "%ju ", B2P((uintmax_t)kp.ki_size)); 1063 sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_rssize); 1064 sbuf_printf(sb, "%ju ", (uintmax_t)0); /* XXX */ 1065 sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_tsize); 1066 sbuf_printf(sb, "%ju ", (uintmax_t)(kp.ki_dsize + kp.ki_ssize)); 1067 lsize = B2P(kp.ki_size) - kp.ki_dsize - 1068 kp.ki_ssize - kp.ki_tsize - 1; 1069 sbuf_printf(sb, "%ju ", (uintmax_t)lsize); 1070 sbuf_printf(sb, "%ju\n", (uintmax_t)0); /* XXX */ 1071 1072 return (0); 1073 } 1074 1075 /* 1076 * Filler function for proc/pid/status 1077 */ 1078 static int 1079 linprocfs_doprocstatus(PFS_FILL_ARGS) 1080 { 1081 struct kinfo_proc kp; 1082 char *state; 1083 segsz_t lsize; 1084 struct thread *td2; 1085 struct sigacts *ps; 1086 l_sigset_t siglist, sigignore, sigcatch; 1087 int i; 1088 1089 sx_slock(&proctree_lock); 1090 PROC_LOCK(p); 1091 td2 = FIRST_THREAD_IN_PROC(p); 1092 1093 if (P_SHOULDSTOP(p)) { 1094 state = "T (stopped)"; 1095 } else { 1096 switch(p->p_state) { 1097 case PRS_NEW: 1098 state = "I (idle)"; 1099 break; 1100 case PRS_NORMAL: 1101 if (p->p_flag & P_WEXIT) { 1102 state = "X (exiting)"; 1103 break; 1104 } 1105 switch(TD_GET_STATE(td2)) { 1106 case TDS_INHIBITED: 1107 state = "S (sleeping)"; 1108 break; 1109 case TDS_RUNQ: 1110 case TDS_RUNNING: 1111 state = "R (running)"; 1112 break; 1113 default: 1114 state = "? (unknown)"; 1115 break; 1116 } 1117 break; 1118 case PRS_ZOMBIE: 1119 state = "Z (zombie)"; 1120 break; 1121 default: 1122 state = "? (unknown)"; 1123 break; 1124 } 1125 } 1126 1127 fill_kinfo_proc(p, &kp); 1128 sx_sunlock(&proctree_lock); 1129 1130 sbuf_printf(sb, "Name:\t%s\n", p->p_comm); /* XXX escape */ 1131 sbuf_printf(sb, "State:\t%s\n", state); 1132 1133 /* 1134 * Credentials 1135 */ 1136 sbuf_printf(sb, "Tgid:\t%d\n", p->p_pid); 1137 sbuf_printf(sb, "Pid:\t%d\n", p->p_pid); 1138 sbuf_printf(sb, "PPid:\t%d\n", kp.ki_ppid ); 1139 sbuf_printf(sb, "TracerPid:\t%d\n", kp.ki_tracer ); 1140 sbuf_printf(sb, "Uid:\t%d\t%d\t%d\t%d\n", p->p_ucred->cr_ruid, 1141 p->p_ucred->cr_uid, 1142 p->p_ucred->cr_svuid, 1143 /* FreeBSD doesn't have fsuid */ 1144 p->p_ucred->cr_uid); 1145 sbuf_printf(sb, "Gid:\t%d\t%d\t%d\t%d\n", p->p_ucred->cr_rgid, 1146 p->p_ucred->cr_gid, 1147 p->p_ucred->cr_svgid, 1148 /* FreeBSD doesn't have fsgid */ 1149 p->p_ucred->cr_gid); 1150 sbuf_cat(sb, "Groups:\t"); 1151 for (i = 0; i < p->p_ucred->cr_ngroups; i++) 1152 sbuf_printf(sb, "%d ", p->p_ucred->cr_groups[i]); 1153 PROC_UNLOCK(p); 1154 sbuf_putc(sb, '\n'); 1155 1156 /* 1157 * Memory 1158 * 1159 * While our approximation of VmLib may not be accurate (I 1160 * don't know of a simple way to verify it, and I'm not sure 1161 * it has much meaning anyway), I believe it's good enough. 1162 * 1163 * The same code that could (I think) accurately compute VmLib 1164 * could also compute VmLck, but I don't really care enough to 1165 * implement it. Submissions are welcome. 1166 */ 1167 sbuf_printf(sb, "VmSize:\t%8ju kB\n", B2K((uintmax_t)kp.ki_size)); 1168 sbuf_printf(sb, "VmLck:\t%8u kB\n", P2K(0)); /* XXX */ 1169 sbuf_printf(sb, "VmRSS:\t%8ju kB\n", P2K((uintmax_t)kp.ki_rssize)); 1170 sbuf_printf(sb, "VmData:\t%8ju kB\n", P2K((uintmax_t)kp.ki_dsize)); 1171 sbuf_printf(sb, "VmStk:\t%8ju kB\n", P2K((uintmax_t)kp.ki_ssize)); 1172 sbuf_printf(sb, "VmExe:\t%8ju kB\n", P2K((uintmax_t)kp.ki_tsize)); 1173 lsize = B2P(kp.ki_size) - kp.ki_dsize - 1174 kp.ki_ssize - kp.ki_tsize - 1; 1175 sbuf_printf(sb, "VmLib:\t%8ju kB\n", P2K((uintmax_t)lsize)); 1176 1177 /* 1178 * Signal masks 1179 */ 1180 PROC_LOCK(p); 1181 bsd_to_linux_sigset(&p->p_siglist, &siglist); 1182 ps = p->p_sigacts; 1183 mtx_lock(&ps->ps_mtx); 1184 bsd_to_linux_sigset(&ps->ps_sigignore, &sigignore); 1185 bsd_to_linux_sigset(&ps->ps_sigcatch, &sigcatch); 1186 mtx_unlock(&ps->ps_mtx); 1187 PROC_UNLOCK(p); 1188 1189 sbuf_printf(sb, "SigPnd:\t%016jx\n", siglist.__mask); 1190 /* 1191 * XXX. SigBlk - target thread's signal mask, td_sigmask. 1192 * To implement SigBlk pseudofs should support proc/tid dir entries. 1193 */ 1194 sbuf_printf(sb, "SigBlk:\t%016x\n", 0); 1195 sbuf_printf(sb, "SigIgn:\t%016jx\n", sigignore.__mask); 1196 sbuf_printf(sb, "SigCgt:\t%016jx\n", sigcatch.__mask); 1197 1198 /* 1199 * Linux also prints the capability masks, but we don't have 1200 * capabilities yet, and when we do get them they're likely to 1201 * be meaningless to Linux programs, so we lie. XXX 1202 */ 1203 sbuf_printf(sb, "CapInh:\t%016x\n", 0); 1204 sbuf_printf(sb, "CapPrm:\t%016x\n", 0); 1205 sbuf_printf(sb, "CapEff:\t%016x\n", 0); 1206 1207 return (0); 1208 } 1209 1210 /* 1211 * Filler function for proc/pid/cwd 1212 */ 1213 static int 1214 linprocfs_doproccwd(PFS_FILL_ARGS) 1215 { 1216 struct pwd *pwd; 1217 char *fullpath = "unknown"; 1218 char *freepath = NULL; 1219 1220 pwd = pwd_hold_proc(p); 1221 vn_fullpath(pwd->pwd_cdir, &fullpath, &freepath); 1222 sbuf_printf(sb, "%s", fullpath); 1223 if (freepath) 1224 free(freepath, M_TEMP); 1225 pwd_drop(pwd); 1226 return (0); 1227 } 1228 1229 /* 1230 * Filler function for proc/pid/root 1231 */ 1232 static int 1233 linprocfs_doprocroot(PFS_FILL_ARGS) 1234 { 1235 struct pwd *pwd; 1236 struct vnode *vp; 1237 char *fullpath = "unknown"; 1238 char *freepath = NULL; 1239 1240 pwd = pwd_hold_proc(p); 1241 vp = jailed(p->p_ucred) ? pwd->pwd_jdir : pwd->pwd_rdir; 1242 vn_fullpath(vp, &fullpath, &freepath); 1243 sbuf_printf(sb, "%s", fullpath); 1244 if (freepath) 1245 free(freepath, M_TEMP); 1246 pwd_drop(pwd); 1247 return (0); 1248 } 1249 1250 /* 1251 * Filler function for proc/pid/cmdline 1252 */ 1253 static int 1254 linprocfs_doproccmdline(PFS_FILL_ARGS) 1255 { 1256 int ret; 1257 1258 PROC_LOCK(p); 1259 if ((ret = p_cansee(td, p)) != 0) { 1260 PROC_UNLOCK(p); 1261 return (ret); 1262 } 1263 1264 /* 1265 * Mimic linux behavior and pass only processes with usermode 1266 * address space as valid. Return zero silently otherwize. 1267 */ 1268 if (p->p_vmspace == &vmspace0) { 1269 PROC_UNLOCK(p); 1270 return (0); 1271 } 1272 if (p->p_args != NULL) { 1273 sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length); 1274 PROC_UNLOCK(p); 1275 return (0); 1276 } 1277 1278 if ((p->p_flag & P_SYSTEM) != 0) { 1279 PROC_UNLOCK(p); 1280 return (0); 1281 } 1282 1283 PROC_UNLOCK(p); 1284 1285 ret = proc_getargv(td, p, sb); 1286 return (ret); 1287 } 1288 1289 /* 1290 * Filler function for proc/pid/environ 1291 */ 1292 static int 1293 linprocfs_doprocenviron(PFS_FILL_ARGS) 1294 { 1295 1296 /* 1297 * Mimic linux behavior and pass only processes with usermode 1298 * address space as valid. Return zero silently otherwize. 1299 */ 1300 if (p->p_vmspace == &vmspace0) 1301 return (0); 1302 1303 return (proc_getenvv(td, p, sb)); 1304 } 1305 1306 static char l32_map_str[] = "%08lx-%08lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n"; 1307 static char l64_map_str[] = "%016lx-%016lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n"; 1308 static char vdso_str[] = " [vdso]"; 1309 static char stack_str[] = " [stack]"; 1310 1311 /* 1312 * Filler function for proc/pid/maps 1313 */ 1314 static int 1315 linprocfs_doprocmaps(PFS_FILL_ARGS) 1316 { 1317 struct vmspace *vm; 1318 vm_map_t map; 1319 vm_map_entry_t entry, tmp_entry; 1320 vm_object_t obj, tobj, lobj; 1321 vm_offset_t e_start, e_end; 1322 vm_ooffset_t off; 1323 vm_prot_t e_prot; 1324 unsigned int last_timestamp; 1325 char *name = "", *freename = NULL; 1326 const char *l_map_str; 1327 ino_t ino; 1328 int error; 1329 struct vnode *vp; 1330 struct vattr vat; 1331 bool private; 1332 1333 PROC_LOCK(p); 1334 error = p_candebug(td, p); 1335 PROC_UNLOCK(p); 1336 if (error) 1337 return (error); 1338 1339 if (uio->uio_rw != UIO_READ) 1340 return (EOPNOTSUPP); 1341 1342 error = 0; 1343 vm = vmspace_acquire_ref(p); 1344 if (vm == NULL) 1345 return (ESRCH); 1346 1347 if (SV_CURPROC_FLAG(SV_LP64)) 1348 l_map_str = l64_map_str; 1349 else 1350 l_map_str = l32_map_str; 1351 map = &vm->vm_map; 1352 vm_map_lock_read(map); 1353 VM_MAP_ENTRY_FOREACH(entry, map) { 1354 name = ""; 1355 freename = NULL; 1356 /* 1357 * Skip printing of the guard page of the stack region, as 1358 * it confuses glibc pthread_getattr_np() method, where both 1359 * the base address and size of the stack of the initial thread 1360 * are calculated. 1361 */ 1362 if ((entry->eflags & (MAP_ENTRY_IS_SUB_MAP | MAP_ENTRY_GUARD)) != 0) 1363 continue; 1364 e_prot = entry->protection; 1365 e_start = entry->start; 1366 e_end = entry->end; 1367 obj = entry->object.vm_object; 1368 off = entry->offset; 1369 for (lobj = tobj = obj; tobj != NULL; 1370 lobj = tobj, tobj = tobj->backing_object) { 1371 VM_OBJECT_RLOCK(tobj); 1372 off += lobj->backing_object_offset; 1373 if (lobj != obj) 1374 VM_OBJECT_RUNLOCK(lobj); 1375 } 1376 private = (entry->eflags & MAP_ENTRY_COW) != 0 || obj == NULL || 1377 (obj->flags & OBJ_ANON) != 0; 1378 last_timestamp = map->timestamp; 1379 vm_map_unlock_read(map); 1380 ino = 0; 1381 if (lobj) { 1382 vp = vm_object_vnode(lobj); 1383 if (vp != NULL) 1384 vref(vp); 1385 if (lobj != obj) 1386 VM_OBJECT_RUNLOCK(lobj); 1387 VM_OBJECT_RUNLOCK(obj); 1388 if (vp != NULL) { 1389 vn_fullpath(vp, &name, &freename); 1390 vn_lock(vp, LK_SHARED | LK_RETRY); 1391 VOP_GETATTR(vp, &vat, td->td_ucred); 1392 ino = vat.va_fileid; 1393 vput(vp); 1394 } else if (SV_PROC_ABI(p) == SV_ABI_LINUX) { 1395 /* 1396 * sv_shared_page_base pointed out to the 1397 * FreeBSD sharedpage, PAGE_SIZE is a size 1398 * of it. The vDSO page is above. 1399 */ 1400 if (e_start == p->p_sysent->sv_shared_page_base + 1401 PAGE_SIZE) 1402 name = vdso_str; 1403 if (e_end == p->p_sysent->sv_usrstack) 1404 name = stack_str; 1405 } 1406 } 1407 1408 /* 1409 * format: 1410 * start, end, access, offset, major, minor, inode, name. 1411 */ 1412 error = sbuf_printf(sb, l_map_str, 1413 (u_long)e_start, (u_long)e_end, 1414 (e_prot & VM_PROT_READ)?"r":"-", 1415 (e_prot & VM_PROT_WRITE)?"w":"-", 1416 (e_prot & VM_PROT_EXECUTE)?"x":"-", 1417 private ? "p" : "s", 1418 (u_long)off, 1419 0, 1420 0, 1421 (u_long)ino, 1422 *name ? " " : " ", 1423 name 1424 ); 1425 if (freename) 1426 free(freename, M_TEMP); 1427 vm_map_lock_read(map); 1428 if (error == -1) { 1429 error = 0; 1430 break; 1431 } 1432 if (last_timestamp != map->timestamp) { 1433 /* 1434 * Look again for the entry because the map was 1435 * modified while it was unlocked. Specifically, 1436 * the entry may have been clipped, merged, or deleted. 1437 */ 1438 vm_map_lookup_entry(map, e_end - 1, &tmp_entry); 1439 entry = tmp_entry; 1440 } 1441 } 1442 vm_map_unlock_read(map); 1443 vmspace_free(vm); 1444 1445 return (error); 1446 } 1447 1448 /* 1449 * Filler function for proc/pid/mem 1450 */ 1451 static int 1452 linprocfs_doprocmem(PFS_FILL_ARGS) 1453 { 1454 ssize_t resid; 1455 int error; 1456 1457 resid = uio->uio_resid; 1458 error = procfs_doprocmem(PFS_FILL_ARGNAMES); 1459 1460 if (uio->uio_rw == UIO_READ && resid != uio->uio_resid) 1461 return (0); 1462 1463 if (error == EFAULT) 1464 error = EIO; 1465 1466 return (error); 1467 } 1468 1469 /* 1470 * Filler function for proc/net/dev 1471 */ 1472 static int 1473 linprocfs_donetdev_cb(if_t ifp, void *arg) 1474 { 1475 char ifname[LINUX_IFNAMSIZ]; 1476 struct sbuf *sb = arg; 1477 1478 if (ifname_bsd_to_linux_ifp(ifp, ifname, sizeof(ifname)) <= 0) 1479 return (ENODEV); 1480 1481 sbuf_printf(sb, "%6.6s: ", ifname); 1482 sbuf_printf(sb, "%7ju %7ju %4ju %4ju %4lu %5lu %10lu %9ju ", 1483 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IBYTES), 1484 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IPACKETS), 1485 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IERRORS), 1486 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IQDROPS), 1487 /* rx_missed_errors */ 1488 0UL, /* rx_fifo_errors */ 1489 0UL, /* rx_length_errors + 1490 * rx_over_errors + 1491 * rx_crc_errors + 1492 * rx_frame_errors */ 1493 0UL, /* rx_compressed */ 1494 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IMCASTS)); 1495 /* XXX-BZ rx only? */ 1496 sbuf_printf(sb, "%8ju %7ju %4ju %4ju %4lu %5ju %7lu %10lu\n", 1497 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OBYTES), 1498 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OPACKETS), 1499 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OERRORS), 1500 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OQDROPS), 1501 0UL, /* tx_fifo_errors */ 1502 (uintmax_t)if_getcounter(ifp, IFCOUNTER_COLLISIONS), 1503 0UL, /* tx_carrier_errors + 1504 * tx_aborted_errors + 1505 * tx_window_errors + 1506 * tx_heartbeat_errors*/ 1507 0UL); /* tx_compressed */ 1508 return (0); 1509 } 1510 1511 static int 1512 linprocfs_donetdev(PFS_FILL_ARGS) 1513 { 1514 struct epoch_tracker et; 1515 1516 sbuf_printf(sb, "%6s|%58s|%s\n" 1517 "%6s|%58s|%58s\n", 1518 "Inter-", " Receive", " Transmit", 1519 " face", 1520 "bytes packets errs drop fifo frame compressed multicast", 1521 "bytes packets errs drop fifo colls carrier compressed"); 1522 1523 CURVNET_SET(TD_TO_VNET(curthread)); 1524 NET_EPOCH_ENTER(et); 1525 if_foreach(linprocfs_donetdev_cb, sb); 1526 NET_EPOCH_EXIT(et); 1527 CURVNET_RESTORE(); 1528 1529 return (0); 1530 } 1531 1532 struct walkarg { 1533 struct sbuf *sb; 1534 }; 1535 1536 static int 1537 linux_route_print(struct rtentry *rt, void *vw) 1538 { 1539 #ifdef INET 1540 struct walkarg *w = vw; 1541 struct route_nhop_data rnd; 1542 struct in_addr dst, mask; 1543 struct nhop_object *nh; 1544 char ifname[16]; 1545 uint32_t scopeid = 0; 1546 uint32_t gw = 0; 1547 uint32_t linux_flags = 0; 1548 1549 rt_get_inet_prefix_pmask(rt, &dst, &mask, &scopeid); 1550 1551 rt_get_rnd(rt, &rnd); 1552 1553 /* select only first route in case of multipath */ 1554 nh = nhop_select_func(rnd.rnd_nhop, 0); 1555 1556 if (ifname_bsd_to_linux_ifp(nh->nh_ifp, ifname, sizeof(ifname)) <= 0) 1557 return (ENODEV); 1558 1559 gw = (nh->nh_flags & NHF_GATEWAY) 1560 ? nh->gw4_sa.sin_addr.s_addr : 0; 1561 1562 linux_flags = RTF_UP | 1563 (nhop_get_rtflags(nh) & (RTF_GATEWAY | RTF_HOST)); 1564 1565 sbuf_printf(w->sb, 1566 "%s\t" 1567 "%08X\t%08X\t%04X\t" 1568 "%d\t%u\t%d\t" 1569 "%08X\t%d\t%u\t%u", 1570 ifname, 1571 dst.s_addr, gw, linux_flags, 1572 0, 0, rnd.rnd_weight, 1573 mask.s_addr, nh->nh_mtu, 0, 0); 1574 1575 sbuf_printf(w->sb, "\n\n"); 1576 #endif 1577 return (0); 1578 } 1579 1580 /* 1581 * Filler function for proc/net/route 1582 */ 1583 static int 1584 linprocfs_donetroute(PFS_FILL_ARGS) 1585 { 1586 struct epoch_tracker et; 1587 struct walkarg w = { 1588 .sb = sb 1589 }; 1590 uint32_t fibnum = curthread->td_proc->p_fibnum; 1591 1592 sbuf_printf(w.sb, "%-127s\n", "Iface\tDestination\tGateway " 1593 "\tFlags\tRefCnt\tUse\tMetric\tMask\t\tMTU" 1594 "\tWindow\tIRTT"); 1595 1596 CURVNET_SET(TD_TO_VNET(curthread)); 1597 NET_EPOCH_ENTER(et); 1598 rib_walk(fibnum, AF_INET, false, linux_route_print, &w); 1599 NET_EPOCH_EXIT(et); 1600 CURVNET_RESTORE(); 1601 1602 return (0); 1603 } 1604 1605 /* 1606 * Filler function for proc/sys/kernel/osrelease 1607 */ 1608 static int 1609 linprocfs_doosrelease(PFS_FILL_ARGS) 1610 { 1611 char osrelease[LINUX_MAX_UTSNAME]; 1612 1613 linux_get_osrelease(td, osrelease); 1614 sbuf_printf(sb, "%s\n", osrelease); 1615 1616 return (0); 1617 } 1618 1619 /* 1620 * Filler function for proc/sys/kernel/ostype 1621 */ 1622 static int 1623 linprocfs_doostype(PFS_FILL_ARGS) 1624 { 1625 char osname[LINUX_MAX_UTSNAME]; 1626 1627 linux_get_osname(td, osname); 1628 sbuf_printf(sb, "%s\n", osname); 1629 1630 return (0); 1631 } 1632 1633 /* 1634 * Filler function for proc/sys/kernel/version 1635 */ 1636 static int 1637 linprocfs_doosbuild(PFS_FILL_ARGS) 1638 { 1639 1640 linprocfs_osbuild(td, sb); 1641 sbuf_cat(sb, "\n"); 1642 return (0); 1643 } 1644 1645 /* 1646 * Filler function for proc/sys/kernel/msgmax 1647 */ 1648 static int 1649 linprocfs_domsgmax(PFS_FILL_ARGS) 1650 { 1651 1652 sbuf_printf(sb, "%d\n", msginfo.msgmax); 1653 return (0); 1654 } 1655 1656 /* 1657 * Filler function for proc/sys/kernel/msgmni 1658 */ 1659 static int 1660 linprocfs_domsgmni(PFS_FILL_ARGS) 1661 { 1662 1663 sbuf_printf(sb, "%d\n", msginfo.msgmni); 1664 return (0); 1665 } 1666 1667 /* 1668 * Filler function for proc/sys/kernel/msgmnb 1669 */ 1670 static int 1671 linprocfs_domsgmnb(PFS_FILL_ARGS) 1672 { 1673 1674 sbuf_printf(sb, "%d\n", msginfo.msgmnb); 1675 return (0); 1676 } 1677 1678 /* 1679 * Filler function for proc/sys/kernel/ngroups_max 1680 * 1681 * Note that in Linux it defaults to 65536, not 1023. 1682 */ 1683 static int 1684 linprocfs_dongroups_max(PFS_FILL_ARGS) 1685 { 1686 1687 sbuf_printf(sb, "%d\n", ngroups_max); 1688 return (0); 1689 } 1690 1691 /* 1692 * Filler function for proc/sys/kernel/pid_max 1693 */ 1694 static int 1695 linprocfs_dopid_max(PFS_FILL_ARGS) 1696 { 1697 1698 sbuf_printf(sb, "%i\n", PID_MAX); 1699 return (0); 1700 } 1701 1702 /* 1703 * Filler function for proc/sys/kernel/sem 1704 */ 1705 static int 1706 linprocfs_dosem(PFS_FILL_ARGS) 1707 { 1708 1709 sbuf_printf(sb, "%d %d %d %d\n", seminfo.semmsl, seminfo.semmns, 1710 seminfo.semopm, seminfo.semmni); 1711 return (0); 1712 } 1713 1714 /* 1715 * Filler function for proc/sys/kernel/shmall 1716 */ 1717 static int 1718 linprocfs_doshmall(PFS_FILL_ARGS) 1719 { 1720 1721 sbuf_printf(sb, "%lu\n", shminfo.shmall); 1722 return (0); 1723 } 1724 1725 /* 1726 * Filler function for proc/sys/kernel/shmmax 1727 */ 1728 static int 1729 linprocfs_doshmmax(PFS_FILL_ARGS) 1730 { 1731 1732 sbuf_printf(sb, "%lu\n", shminfo.shmmax); 1733 return (0); 1734 } 1735 1736 /* 1737 * Filler function for proc/sys/kernel/shmmni 1738 */ 1739 static int 1740 linprocfs_doshmmni(PFS_FILL_ARGS) 1741 { 1742 1743 sbuf_printf(sb, "%lu\n", shminfo.shmmni); 1744 return (0); 1745 } 1746 1747 /* 1748 * Filler function for proc/sys/kernel/tainted 1749 */ 1750 static int 1751 linprocfs_dotainted(PFS_FILL_ARGS) 1752 { 1753 1754 sbuf_printf(sb, "0\n"); 1755 return (0); 1756 } 1757 1758 /* 1759 * Filler function for proc/sys/vm/min_free_kbytes 1760 * 1761 * This mirrors the approach in illumos to return zero for reads. Effectively, 1762 * it says, no memory is kept in reserve for "atomic allocations". This class 1763 * of allocation can be used at times when a thread cannot be suspended. 1764 */ 1765 static int 1766 linprocfs_dominfree(PFS_FILL_ARGS) 1767 { 1768 1769 sbuf_printf(sb, "%d\n", 0); 1770 return (0); 1771 } 1772 1773 /* 1774 * Filler function for proc/scsi/device_info 1775 */ 1776 static int 1777 linprocfs_doscsidevinfo(PFS_FILL_ARGS) 1778 { 1779 1780 return (0); 1781 } 1782 1783 /* 1784 * Filler function for proc/scsi/scsi 1785 */ 1786 static int 1787 linprocfs_doscsiscsi(PFS_FILL_ARGS) 1788 { 1789 1790 return (0); 1791 } 1792 1793 /* 1794 * Filler function for proc/devices 1795 */ 1796 static int 1797 linprocfs_dodevices(PFS_FILL_ARGS) 1798 { 1799 char *char_devices; 1800 sbuf_printf(sb, "Character devices:\n"); 1801 1802 char_devices = linux_get_char_devices(); 1803 sbuf_printf(sb, "%s", char_devices); 1804 linux_free_get_char_devices(char_devices); 1805 1806 sbuf_printf(sb, "\nBlock devices:\n"); 1807 1808 return (0); 1809 } 1810 1811 /* 1812 * Filler function for proc/cmdline 1813 */ 1814 static int 1815 linprocfs_docmdline(PFS_FILL_ARGS) 1816 { 1817 1818 sbuf_printf(sb, "BOOT_IMAGE=%s", kernelname); 1819 sbuf_printf(sb, " ro root=302\n"); 1820 return (0); 1821 } 1822 1823 /* 1824 * Filler function for proc/filesystems 1825 */ 1826 static int 1827 linprocfs_dofilesystems(PFS_FILL_ARGS) 1828 { 1829 struct vfsconf *vfsp; 1830 1831 vfsconf_slock(); 1832 TAILQ_FOREACH(vfsp, &vfsconf, vfc_list) { 1833 if (vfsp->vfc_flags & VFCF_SYNTHETIC) 1834 sbuf_printf(sb, "nodev"); 1835 sbuf_printf(sb, "\t%s\n", vfsp->vfc_name); 1836 } 1837 vfsconf_sunlock(); 1838 return(0); 1839 } 1840 1841 /* 1842 * Filler function for proc/modules 1843 */ 1844 static int 1845 linprocfs_domodules(PFS_FILL_ARGS) 1846 { 1847 #if 0 1848 struct linker_file *lf; 1849 1850 TAILQ_FOREACH(lf, &linker_files, link) { 1851 sbuf_printf(sb, "%-20s%8lu%4d\n", lf->filename, 1852 (unsigned long)lf->size, lf->refs); 1853 } 1854 #endif 1855 return (0); 1856 } 1857 1858 /* 1859 * Filler function for proc/pid/fd 1860 */ 1861 static int 1862 linprocfs_dofdescfs(PFS_FILL_ARGS) 1863 { 1864 1865 if (p == curproc) 1866 sbuf_printf(sb, "/dev/fd"); 1867 else 1868 sbuf_printf(sb, "unknown"); 1869 return (0); 1870 } 1871 1872 /* 1873 * Filler function for proc/pid/limits 1874 */ 1875 static const struct linux_rlimit_ident { 1876 const char *desc; 1877 const char *unit; 1878 unsigned int rlim_id; 1879 } linux_rlimits_ident[] = { 1880 { "Max cpu time", "seconds", RLIMIT_CPU }, 1881 { "Max file size", "bytes", RLIMIT_FSIZE }, 1882 { "Max data size", "bytes", RLIMIT_DATA }, 1883 { "Max stack size", "bytes", RLIMIT_STACK }, 1884 { "Max core file size", "bytes", RLIMIT_CORE }, 1885 { "Max resident set", "bytes", RLIMIT_RSS }, 1886 { "Max processes", "processes", RLIMIT_NPROC }, 1887 { "Max open files", "files", RLIMIT_NOFILE }, 1888 { "Max locked memory", "bytes", RLIMIT_MEMLOCK }, 1889 { "Max address space", "bytes", RLIMIT_AS }, 1890 { "Max file locks", "locks", LINUX_RLIMIT_LOCKS }, 1891 { "Max pending signals", "signals", LINUX_RLIMIT_SIGPENDING }, 1892 { "Max msgqueue size", "bytes", LINUX_RLIMIT_MSGQUEUE }, 1893 { "Max nice priority", "", LINUX_RLIMIT_NICE }, 1894 { "Max realtime priority", "", LINUX_RLIMIT_RTPRIO }, 1895 { "Max realtime timeout", "us", LINUX_RLIMIT_RTTIME }, 1896 { 0, 0, 0 } 1897 }; 1898 1899 static int 1900 linprocfs_doproclimits(PFS_FILL_ARGS) 1901 { 1902 const struct linux_rlimit_ident *li; 1903 struct plimit *limp; 1904 struct rlimit rl; 1905 ssize_t size; 1906 int res, error; 1907 1908 error = 0; 1909 1910 PROC_LOCK(p); 1911 limp = lim_hold(p->p_limit); 1912 PROC_UNLOCK(p); 1913 size = sizeof(res); 1914 sbuf_printf(sb, "%-26s%-21s%-21s%-21s\n", "Limit", "Soft Limit", 1915 "Hard Limit", "Units"); 1916 for (li = linux_rlimits_ident; li->desc != NULL; ++li) { 1917 switch (li->rlim_id) 1918 { 1919 case LINUX_RLIMIT_LOCKS: 1920 /* FALLTHROUGH */ 1921 case LINUX_RLIMIT_RTTIME: 1922 rl.rlim_cur = RLIM_INFINITY; 1923 break; 1924 case LINUX_RLIMIT_SIGPENDING: 1925 error = kernel_sysctlbyname(td, 1926 "kern.sigqueue.max_pending_per_proc", 1927 &res, &size, 0, 0, 0, 0); 1928 if (error != 0) 1929 goto out; 1930 rl.rlim_cur = res; 1931 rl.rlim_max = res; 1932 break; 1933 case LINUX_RLIMIT_MSGQUEUE: 1934 error = kernel_sysctlbyname(td, 1935 "kern.ipc.msgmnb", &res, &size, 0, 0, 0, 0); 1936 if (error != 0) 1937 goto out; 1938 rl.rlim_cur = res; 1939 rl.rlim_max = res; 1940 break; 1941 case LINUX_RLIMIT_NICE: 1942 /* FALLTHROUGH */ 1943 case LINUX_RLIMIT_RTPRIO: 1944 rl.rlim_cur = 0; 1945 rl.rlim_max = 0; 1946 break; 1947 default: 1948 rl = limp->pl_rlimit[li->rlim_id]; 1949 break; 1950 } 1951 if (rl.rlim_cur == RLIM_INFINITY) 1952 sbuf_printf(sb, "%-26s%-21s%-21s%-10s\n", 1953 li->desc, "unlimited", "unlimited", li->unit); 1954 else 1955 sbuf_printf(sb, "%-26s%-21llu%-21llu%-10s\n", 1956 li->desc, (unsigned long long)rl.rlim_cur, 1957 (unsigned long long)rl.rlim_max, li->unit); 1958 } 1959 out: 1960 lim_free(limp); 1961 return (error); 1962 } 1963 1964 /* 1965 * The point of the following two functions is to work around 1966 * an assertion in Chromium; see kern/240991 for details. 1967 */ 1968 static int 1969 linprocfs_dotaskattr(PFS_ATTR_ARGS) 1970 { 1971 1972 vap->va_nlink = 3; 1973 return (0); 1974 } 1975 1976 /* 1977 * Filler function for proc/<pid>/task/.dummy 1978 */ 1979 static int 1980 linprocfs_dotaskdummy(PFS_FILL_ARGS) 1981 { 1982 1983 return (0); 1984 } 1985 1986 /* 1987 * Filler function for proc/sys/kernel/random/uuid 1988 */ 1989 static int 1990 linprocfs_douuid(PFS_FILL_ARGS) 1991 { 1992 struct uuid uuid; 1993 1994 kern_uuidgen(&uuid, 1); 1995 sbuf_printf_uuid(sb, &uuid); 1996 sbuf_printf(sb, "\n"); 1997 return(0); 1998 } 1999 2000 /* 2001 * Filler function for proc/sys/kernel/random/boot_id 2002 */ 2003 static int 2004 linprocfs_doboot_id(PFS_FILL_ARGS) 2005 { 2006 static bool firstboot = 1; 2007 static struct uuid uuid; 2008 2009 if (firstboot) { 2010 kern_uuidgen(&uuid, 1); 2011 firstboot = 0; 2012 } 2013 sbuf_printf_uuid(sb, &uuid); 2014 sbuf_printf(sb, "\n"); 2015 return(0); 2016 } 2017 2018 /* 2019 * Filler function for proc/pid/auxv 2020 */ 2021 static int 2022 linprocfs_doauxv(PFS_FILL_ARGS) 2023 { 2024 struct sbuf *asb; 2025 off_t buflen, resid; 2026 int error; 2027 2028 /* 2029 * Mimic linux behavior and pass only processes with usermode 2030 * address space as valid. Return zero silently otherwise. 2031 */ 2032 if (p->p_vmspace == &vmspace0) 2033 return (0); 2034 2035 if (uio->uio_resid == 0) 2036 return (0); 2037 if (uio->uio_offset < 0 || uio->uio_resid < 0) 2038 return (EINVAL); 2039 2040 asb = sbuf_new_auto(); 2041 if (asb == NULL) 2042 return (ENOMEM); 2043 error = proc_getauxv(td, p, asb); 2044 if (error == 0) 2045 error = sbuf_finish(asb); 2046 2047 resid = sbuf_len(asb) - uio->uio_offset; 2048 if (resid > uio->uio_resid) 2049 buflen = uio->uio_resid; 2050 else 2051 buflen = resid; 2052 if (buflen > IOSIZE_MAX) 2053 return (EINVAL); 2054 if (buflen > maxphys) 2055 buflen = maxphys; 2056 if (resid <= 0) 2057 return (0); 2058 2059 if (error == 0) 2060 error = uiomove(sbuf_data(asb) + uio->uio_offset, buflen, uio); 2061 sbuf_delete(asb); 2062 return (error); 2063 } 2064 2065 /* 2066 * Filler function for proc/self/oom_score_adj 2067 */ 2068 static int 2069 linprocfs_do_oom_score_adj(PFS_FILL_ARGS) 2070 { 2071 struct linux_pemuldata *pem; 2072 long oom; 2073 2074 pem = pem_find(p); 2075 if (pem == NULL || uio == NULL) 2076 return (EOPNOTSUPP); 2077 if (uio->uio_rw == UIO_READ) { 2078 sbuf_printf(sb, "%d\n", pem->oom_score_adj); 2079 } else { 2080 sbuf_trim(sb); 2081 sbuf_finish(sb); 2082 oom = strtol(sbuf_data(sb), NULL, 10); 2083 if (oom < LINUX_OOM_SCORE_ADJ_MIN || 2084 oom > LINUX_OOM_SCORE_ADJ_MAX) 2085 return (EINVAL); 2086 pem->oom_score_adj = oom; 2087 } 2088 return (0); 2089 } 2090 2091 /* 2092 * Filler function for proc/sys/vm/max_map_count 2093 * 2094 * Maximum number of active map areas, on Linux this limits the number 2095 * of vmaps per mm struct. We don't limit mappings, return a suitable 2096 * large value. 2097 */ 2098 static int 2099 linprocfs_domax_map_cnt(PFS_FILL_ARGS) 2100 { 2101 2102 sbuf_printf(sb, "%d\n", INT32_MAX); 2103 return (0); 2104 } 2105 2106 /* 2107 * Constructor 2108 */ 2109 static int 2110 linprocfs_init(PFS_INIT_ARGS) 2111 { 2112 struct pfs_node *root; 2113 struct pfs_node *dir; 2114 struct pfs_node *sys; 2115 2116 root = pi->pi_root; 2117 2118 /* /proc/... */ 2119 pfs_create_file(root, "cmdline", &linprocfs_docmdline, 2120 NULL, NULL, NULL, PFS_RD); 2121 pfs_create_file(root, "cpuinfo", &linprocfs_docpuinfo, 2122 NULL, NULL, NULL, PFS_RD); 2123 pfs_create_file(root, "devices", &linprocfs_dodevices, 2124 NULL, NULL, NULL, PFS_RD); 2125 pfs_create_file(root, "filesystems", &linprocfs_dofilesystems, 2126 NULL, NULL, NULL, PFS_RD); 2127 pfs_create_file(root, "loadavg", &linprocfs_doloadavg, 2128 NULL, NULL, NULL, PFS_RD); 2129 pfs_create_file(root, "meminfo", &linprocfs_domeminfo, 2130 NULL, NULL, NULL, PFS_RD); 2131 pfs_create_file(root, "modules", &linprocfs_domodules, 2132 NULL, NULL, NULL, PFS_RD); 2133 pfs_create_file(root, "mounts", &linprocfs_domtab, 2134 NULL, NULL, NULL, PFS_RD); 2135 pfs_create_file(root, "mtab", &linprocfs_domtab, 2136 NULL, NULL, NULL, PFS_RD); 2137 pfs_create_file(root, "partitions", &linprocfs_dopartitions, 2138 NULL, NULL, NULL, PFS_RD); 2139 pfs_create_link(root, "self", &procfs_docurproc, 2140 NULL, NULL, NULL, 0); 2141 pfs_create_file(root, "stat", &linprocfs_dostat, 2142 NULL, NULL, NULL, PFS_RD); 2143 pfs_create_file(root, "swaps", &linprocfs_doswaps, 2144 NULL, NULL, NULL, PFS_RD); 2145 pfs_create_file(root, "uptime", &linprocfs_douptime, 2146 NULL, NULL, NULL, PFS_RD); 2147 pfs_create_file(root, "version", &linprocfs_doversion, 2148 NULL, NULL, NULL, PFS_RD); 2149 2150 /* /proc/bus/... */ 2151 dir = pfs_create_dir(root, "bus", NULL, NULL, NULL, 0); 2152 dir = pfs_create_dir(dir, "pci", NULL, NULL, NULL, 0); 2153 dir = pfs_create_dir(dir, "devices", NULL, NULL, NULL, 0); 2154 2155 /* /proc/net/... */ 2156 dir = pfs_create_dir(root, "net", NULL, NULL, NULL, 0); 2157 pfs_create_file(dir, "dev", &linprocfs_donetdev, 2158 NULL, NULL, NULL, PFS_RD); 2159 pfs_create_file(dir, "route", &linprocfs_donetroute, 2160 NULL, NULL, NULL, PFS_RD); 2161 2162 /* /proc/<pid>/... */ 2163 dir = pfs_create_dir(root, "pid", NULL, NULL, NULL, PFS_PROCDEP); 2164 pfs_create_file(dir, "cmdline", &linprocfs_doproccmdline, 2165 NULL, NULL, NULL, PFS_RD); 2166 pfs_create_link(dir, "cwd", &linprocfs_doproccwd, 2167 NULL, NULL, NULL, 0); 2168 pfs_create_file(dir, "environ", &linprocfs_doprocenviron, 2169 NULL, &procfs_candebug, NULL, PFS_RD); 2170 pfs_create_link(dir, "exe", &procfs_doprocfile, 2171 NULL, &procfs_notsystem, NULL, 0); 2172 pfs_create_file(dir, "maps", &linprocfs_doprocmaps, 2173 NULL, NULL, NULL, PFS_RD | PFS_AUTODRAIN); 2174 pfs_create_file(dir, "mem", &linprocfs_doprocmem, 2175 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR | PFS_RAW); 2176 pfs_create_file(dir, "mountinfo", &linprocfs_doprocmountinfo, 2177 NULL, NULL, NULL, PFS_RD); 2178 pfs_create_file(dir, "mounts", &linprocfs_domtab, 2179 NULL, NULL, NULL, PFS_RD); 2180 pfs_create_link(dir, "root", &linprocfs_doprocroot, 2181 NULL, NULL, NULL, 0); 2182 pfs_create_file(dir, "stat", &linprocfs_doprocstat, 2183 NULL, NULL, NULL, PFS_RD); 2184 pfs_create_file(dir, "statm", &linprocfs_doprocstatm, 2185 NULL, NULL, NULL, PFS_RD); 2186 pfs_create_file(dir, "status", &linprocfs_doprocstatus, 2187 NULL, NULL, NULL, PFS_RD); 2188 pfs_create_link(dir, "fd", &linprocfs_dofdescfs, 2189 NULL, NULL, NULL, 0); 2190 pfs_create_file(dir, "auxv", &linprocfs_doauxv, 2191 NULL, &procfs_candebug, NULL, PFS_RD|PFS_RAWRD); 2192 pfs_create_file(dir, "limits", &linprocfs_doproclimits, 2193 NULL, NULL, NULL, PFS_RD); 2194 pfs_create_file(dir, "oom_score_adj", &linprocfs_do_oom_score_adj, 2195 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR); 2196 2197 /* /proc/<pid>/task/... */ 2198 dir = pfs_create_dir(dir, "task", linprocfs_dotaskattr, NULL, NULL, 0); 2199 pfs_create_file(dir, ".dummy", &linprocfs_dotaskdummy, 2200 NULL, NULL, NULL, PFS_RD); 2201 2202 /* /proc/scsi/... */ 2203 dir = pfs_create_dir(root, "scsi", NULL, NULL, NULL, 0); 2204 pfs_create_file(dir, "device_info", &linprocfs_doscsidevinfo, 2205 NULL, NULL, NULL, PFS_RD); 2206 pfs_create_file(dir, "scsi", &linprocfs_doscsiscsi, 2207 NULL, NULL, NULL, PFS_RD); 2208 2209 /* /proc/sys/... */ 2210 sys = pfs_create_dir(root, "sys", NULL, NULL, NULL, 0); 2211 2212 /* /proc/sys/kernel/... */ 2213 dir = pfs_create_dir(sys, "kernel", NULL, NULL, NULL, 0); 2214 pfs_create_file(dir, "osrelease", &linprocfs_doosrelease, 2215 NULL, NULL, NULL, PFS_RD); 2216 pfs_create_file(dir, "ostype", &linprocfs_doostype, 2217 NULL, NULL, NULL, PFS_RD); 2218 pfs_create_file(dir, "version", &linprocfs_doosbuild, 2219 NULL, NULL, NULL, PFS_RD); 2220 pfs_create_file(dir, "msgmax", &linprocfs_domsgmax, 2221 NULL, NULL, NULL, PFS_RD); 2222 pfs_create_file(dir, "msgmni", &linprocfs_domsgmni, 2223 NULL, NULL, NULL, PFS_RD); 2224 pfs_create_file(dir, "msgmnb", &linprocfs_domsgmnb, 2225 NULL, NULL, NULL, PFS_RD); 2226 pfs_create_file(dir, "ngroups_max", &linprocfs_dongroups_max, 2227 NULL, NULL, NULL, PFS_RD); 2228 pfs_create_file(dir, "pid_max", &linprocfs_dopid_max, 2229 NULL, NULL, NULL, PFS_RD); 2230 pfs_create_file(dir, "sem", &linprocfs_dosem, 2231 NULL, NULL, NULL, PFS_RD); 2232 pfs_create_file(dir, "shmall", &linprocfs_doshmall, 2233 NULL, NULL, NULL, PFS_RD); 2234 pfs_create_file(dir, "shmmax", &linprocfs_doshmmax, 2235 NULL, NULL, NULL, PFS_RD); 2236 pfs_create_file(dir, "shmmni", &linprocfs_doshmmni, 2237 NULL, NULL, NULL, PFS_RD); 2238 pfs_create_file(dir, "tainted", &linprocfs_dotainted, 2239 NULL, NULL, NULL, PFS_RD); 2240 2241 /* /proc/sys/kernel/random/... */ 2242 dir = pfs_create_dir(dir, "random", NULL, NULL, NULL, 0); 2243 pfs_create_file(dir, "uuid", &linprocfs_douuid, 2244 NULL, NULL, NULL, PFS_RD); 2245 pfs_create_file(dir, "boot_id", &linprocfs_doboot_id, 2246 NULL, NULL, NULL, PFS_RD); 2247 2248 /* /proc/sys/vm/.... */ 2249 dir = pfs_create_dir(sys, "vm", NULL, NULL, NULL, 0); 2250 pfs_create_file(dir, "min_free_kbytes", &linprocfs_dominfree, 2251 NULL, NULL, NULL, PFS_RD); 2252 pfs_create_file(dir, "max_map_count", &linprocfs_domax_map_cnt, 2253 NULL, NULL, NULL, PFS_RD); 2254 2255 return (0); 2256 } 2257 2258 /* 2259 * Destructor 2260 */ 2261 static int 2262 linprocfs_uninit(PFS_INIT_ARGS) 2263 { 2264 2265 /* nothing to do, pseudofs will GC */ 2266 return (0); 2267 } 2268 2269 PSEUDOFS(linprocfs, 1, VFCF_JAIL); 2270 #if defined(__aarch64__) || defined(__amd64__) 2271 MODULE_DEPEND(linprocfs, linux_common, 1, 1, 1); 2272 #else 2273 MODULE_DEPEND(linprocfs, linux, 1, 1, 1); 2274 #endif 2275 MODULE_DEPEND(linprocfs, procfs, 1, 1, 1); 2276 MODULE_DEPEND(linprocfs, sysvmsg, 1, 1, 1); 2277 MODULE_DEPEND(linprocfs, sysvsem, 1, 1, 1); 2278 MODULE_DEPEND(linprocfs, sysvshm, 1, 1, 1); 2279