sys/compat/linprocfs/linprocfs.c

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