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 "opt_inet.h" 45 46 #include <sys/cdefs.h> 47 __FBSDID("$FreeBSD$"); 48 49 #include <sys/param.h> 50 #include <sys/queue.h> 51 #include <sys/blist.h> 52 #include <sys/conf.h> 53 #include <sys/exec.h> 54 #include <sys/fcntl.h> 55 #include <sys/filedesc.h> 56 #include <sys/jail.h> 57 #include <sys/kernel.h> 58 #include <sys/limits.h> 59 #include <sys/linker.h> 60 #include <sys/lock.h> 61 #include <sys/malloc.h> 62 #include <sys/msg.h> 63 #include <sys/mutex.h> 64 #include <sys/namei.h> 65 #include <sys/proc.h> 66 #include <sys/ptrace.h> 67 #include <sys/resourcevar.h> 68 #include <sys/resource.h> 69 #include <sys/sbuf.h> 70 #include <sys/sem.h> 71 #include <sys/shm.h> 72 #include <sys/smp.h> 73 #include <sys/socket.h> 74 #include <sys/syscallsubr.h> 75 #include <sys/sysctl.h> 76 #include <sys/sysent.h> 77 #include <sys/systm.h> 78 #include <sys/time.h> 79 #include <sys/tty.h> 80 #include <sys/user.h> 81 #include <sys/uuid.h> 82 #include <sys/vmmeter.h> 83 #include <sys/vnode.h> 84 #include <sys/bus.h> 85 #include <sys/uio.h> 86 87 #include <net/if.h> 88 #include <net/if_var.h> 89 #include <net/if_types.h> 90 91 #include <net/route.h> 92 #include <net/route/nhop.h> 93 #include <net/route/route_ctl.h> 94 95 #include <vm/vm.h> 96 #include <vm/vm_extern.h> 97 #include <vm/pmap.h> 98 #include <vm/vm_map.h> 99 #include <vm/vm_param.h> 100 #include <vm/vm_object.h> 101 #include <vm/swap_pager.h> 102 103 #include <machine/clock.h> 104 105 #include <geom/geom.h> 106 #include <geom/geom_int.h> 107 108 #if defined(__i386__) || defined(__amd64__) 109 #include <machine/cputypes.h> 110 #include <machine/md_var.h> 111 #endif /* __i386__ || __amd64__ */ 112 113 #include <compat/linux/linux.h> 114 #include <compat/linux/linux_emul.h> 115 #include <compat/linux/linux_mib.h> 116 #include <compat/linux/linux_misc.h> 117 #include <compat/linux/linux_util.h> 118 #include <fs/pseudofs/pseudofs.h> 119 #include <fs/procfs/procfs.h> 120 121 /* 122 * Various conversion macros 123 */ 124 #define T2J(x) ((long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to jiffies */ 125 #define T2CS(x) ((unsigned long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to centiseconds */ 126 #define T2S(x) ((x) / (stathz ? stathz : hz)) /* ticks to seconds */ 127 #define B2K(x) ((x) >> 10) /* bytes to kbytes */ 128 #define B2P(x) ((x) >> PAGE_SHIFT) /* bytes to pages */ 129 #define P2B(x) ((x) << PAGE_SHIFT) /* pages to bytes */ 130 #define P2K(x) ((x) << (PAGE_SHIFT - 10)) /* pages to kbytes */ 131 #define TV2J(x) ((x)->tv_sec * 100UL + (x)->tv_usec / 10000) 132 133 /** 134 * @brief Mapping of ki_stat in struct kinfo_proc to the linux state 135 * 136 * The linux procfs state field displays one of the characters RSDZTW to 137 * denote running, sleeping in an interruptible wait, waiting in an 138 * uninterruptible disk sleep, a zombie process, process is being traced 139 * or stopped, or process is paging respectively. 140 * 141 * Our struct kinfo_proc contains the variable ki_stat which contains a 142 * value out of SIDL, SRUN, SSLEEP, SSTOP, SZOMB, SWAIT and SLOCK. 143 * 144 * This character array is used with ki_stati-1 as an index and tries to 145 * map our states to suitable linux states. 146 */ 147 static char linux_state[] = "RRSTZDD"; 148 149 /* 150 * Filler function for proc/meminfo 151 */ 152 static int 153 linprocfs_domeminfo(PFS_FILL_ARGS) 154 { 155 unsigned long memtotal; /* total memory in bytes */ 156 unsigned long memfree; /* free memory in bytes */ 157 unsigned long cached; /* page cache */ 158 unsigned long buffers; /* buffer cache */ 159 unsigned long long swaptotal; /* total swap space in bytes */ 160 unsigned long long swapused; /* used swap space in bytes */ 161 unsigned long long swapfree; /* free swap space in bytes */ 162 size_t sz; 163 int error, i, j; 164 165 memtotal = physmem * PAGE_SIZE; 166 memfree = (unsigned long)vm_free_count() * PAGE_SIZE; 167 swap_pager_status(&i, &j); 168 swaptotal = (unsigned long long)i * PAGE_SIZE; 169 swapused = (unsigned long long)j * PAGE_SIZE; 170 swapfree = swaptotal - swapused; 171 172 /* 173 * This value may exclude wired pages, but we have no good way of 174 * accounting for that. 175 */ 176 cached = 177 (vm_active_count() + vm_inactive_count() + vm_laundry_count()) * 178 PAGE_SIZE; 179 180 sz = sizeof(buffers); 181 error = kernel_sysctlbyname(curthread, "vfs.bufspace", &buffers, &sz, 182 NULL, 0, 0, 0); 183 if (error != 0) 184 buffers = 0; 185 186 sbuf_printf(sb, 187 "MemTotal: %9lu kB\n" 188 "MemFree: %9lu kB\n" 189 "Buffers: %9lu kB\n" 190 "Cached: %9lu kB\n" 191 "SwapTotal:%9llu kB\n" 192 "SwapFree: %9llu kB\n", 193 B2K(memtotal), B2K(memfree), B2K(buffers), 194 B2K(cached), B2K(swaptotal), B2K(swapfree)); 195 196 return (0); 197 } 198 199 #if defined(__i386__) || defined(__amd64__) 200 /* 201 * Filler function for proc/cpuinfo (i386 & amd64 version) 202 */ 203 static int 204 linprocfs_docpuinfo(PFS_FILL_ARGS) 205 { 206 int hw_model[2]; 207 char model[128]; 208 uint64_t freq; 209 size_t size; 210 u_int cache_size[4]; 211 u_int regs[4] = { 0 }; 212 int fqmhz, fqkhz; 213 int i, j; 214 215 /* 216 * We default the flags to include all non-conflicting flags, 217 * and the Intel versions of conflicting flags. 218 */ 219 static char *cpu_feature_names[] = { 220 /* 0 */ "fpu", "vme", "de", "pse", 221 /* 4 */ "tsc", "msr", "pae", "mce", 222 /* 8 */ "cx8", "apic", "", "sep", 223 /* 12 */ "mtrr", "pge", "mca", "cmov", 224 /* 16 */ "pat", "pse36", "pn", "clflush", 225 /* 20 */ "", "dts", "acpi", "mmx", 226 /* 24 */ "fxsr", "sse", "sse2", "ss", 227 /* 28 */ "ht", "tm", "ia64", "pbe" 228 }; 229 230 static char *amd_feature_names[] = { 231 /* 0 */ "", "", "", "", 232 /* 4 */ "", "", "", "", 233 /* 8 */ "", "", "", "syscall", 234 /* 12 */ "", "", "", "", 235 /* 16 */ "", "", "", "mp", 236 /* 20 */ "nx", "", "mmxext", "", 237 /* 24 */ "", "fxsr_opt", "pdpe1gb", "rdtscp", 238 /* 28 */ "", "lm", "3dnowext", "3dnow" 239 }; 240 241 static char *cpu_feature2_names[] = { 242 /* 0 */ "pni", "pclmulqdq", "dtes64", "monitor", 243 /* 4 */ "ds_cpl", "vmx", "smx", "est", 244 /* 8 */ "tm2", "ssse3", "cid", "sdbg", 245 /* 12 */ "fma", "cx16", "xtpr", "pdcm", 246 /* 16 */ "", "pcid", "dca", "sse4_1", 247 /* 20 */ "sse4_2", "x2apic", "movbe", "popcnt", 248 /* 24 */ "tsc_deadline_timer", "aes", "xsave", "", 249 /* 28 */ "avx", "f16c", "rdrand", "hypervisor" 250 }; 251 252 static char *amd_feature2_names[] = { 253 /* 0 */ "lahf_lm", "cmp_legacy", "svm", "extapic", 254 /* 4 */ "cr8_legacy", "abm", "sse4a", "misalignsse", 255 /* 8 */ "3dnowprefetch", "osvw", "ibs", "xop", 256 /* 12 */ "skinit", "wdt", "", "lwp", 257 /* 16 */ "fma4", "tce", "", "nodeid_msr", 258 /* 20 */ "", "tbm", "topoext", "perfctr_core", 259 /* 24 */ "perfctr_nb", "", "bpext", "ptsc", 260 /* 28 */ "perfctr_llc", "mwaitx", "", "" 261 }; 262 263 static char *cpu_stdext_feature_names[] = { 264 /* 0 */ "fsgsbase", "tsc_adjust", "sgx", "bmi1", 265 /* 4 */ "hle", "avx2", "", "smep", 266 /* 8 */ "bmi2", "erms", "invpcid", "rtm", 267 /* 12 */ "cqm", "", "mpx", "rdt_a", 268 /* 16 */ "avx512f", "avx512dq", "rdseed", "adx", 269 /* 20 */ "smap", "avx512ifma", "", "clflushopt", 270 /* 24 */ "clwb", "intel_pt", "avx512pf", "avx512er", 271 /* 28 */ "avx512cd", "sha_ni", "avx512bw", "avx512vl" 272 }; 273 274 static char *cpu_stdext_feature2_names[] = { 275 /* 0 */ "prefetchwt1", "avx512vbmi", "umip", "pku", 276 /* 4 */ "ospke", "waitpkg", "avx512_vbmi2", "", 277 /* 8 */ "gfni", "vaes", "vpclmulqdq", "avx512_vnni", 278 /* 12 */ "avx512_bitalg", "", "avx512_vpopcntdq", "", 279 /* 16 */ "", "", "", "", 280 /* 20 */ "", "", "rdpid", "", 281 /* 24 */ "", "cldemote", "", "movdiri", 282 /* 28 */ "movdir64b", "enqcmd", "sgx_lc", "" 283 }; 284 285 static char *cpu_stdext_feature3_names[] = { 286 /* 0 */ "", "", "avx512_4vnniw", "avx512_4fmaps", 287 /* 4 */ "fsrm", "", "", "", 288 /* 8 */ "avx512_vp2intersect", "", "md_clear", "", 289 /* 12 */ "", "", "", "", 290 /* 16 */ "", "", "pconfig", "", 291 /* 20 */ "", "", "", "", 292 /* 24 */ "", "", "ibrs", "stibp", 293 /* 28 */ "flush_l1d", "arch_capabilities", "core_capabilities", "ssbd" 294 }; 295 296 static char *cpu_stdext_feature_l1_names[] = { 297 /* 0 */ "xsaveopt", "xsavec", "xgetbv1", "xsaves", 298 /* 4 */ "xfd" 299 }; 300 301 static char *power_flags[] = { 302 "ts", "fid", "vid", 303 "ttp", "tm", "stc", 304 "100mhzsteps", "hwpstate", "", 305 "cpb", "eff_freq_ro", "proc_feedback", 306 "acc_power", 307 }; 308 309 hw_model[0] = CTL_HW; 310 hw_model[1] = HW_MODEL; 311 model[0] = '\0'; 312 size = sizeof(model); 313 if (kernel_sysctl(td, hw_model, 2, &model, &size, 0, 0, 0, 0) != 0) 314 strcpy(model, "unknown"); 315 #ifdef __i386__ 316 switch (cpu_vendor_id) { 317 case CPU_VENDOR_AMD: 318 if (cpu_class < CPUCLASS_686) 319 cpu_feature_names[16] = "fcmov"; 320 break; 321 case CPU_VENDOR_CYRIX: 322 cpu_feature_names[24] = "cxmmx"; 323 break; 324 } 325 #endif 326 if (cpu_exthigh >= 0x80000006) 327 do_cpuid(0x80000006, cache_size); 328 else 329 memset(cache_size, 0, sizeof(cache_size)); 330 for (i = 0; i < mp_ncpus; ++i) { 331 fqmhz = 0; 332 fqkhz = 0; 333 freq = atomic_load_acq_64(&tsc_freq); 334 if (freq != 0) { 335 fqmhz = (freq + 4999) / 1000000; 336 fqkhz = ((freq + 4999) / 10000) % 100; 337 } 338 sbuf_printf(sb, 339 "processor\t: %d\n" 340 "vendor_id\t: %.20s\n" 341 "cpu family\t: %u\n" 342 "model\t\t: %u\n" 343 "model name\t: %s\n" 344 "stepping\t: %u\n" 345 "cpu MHz\t\t: %d.%02d\n" 346 "cache size\t: %d KB\n" 347 "physical id\t: %d\n" 348 "siblings\t: %d\n" 349 "core id\t\t: %d\n" 350 "cpu cores\t: %d\n" 351 "apicid\t\t: %d\n" 352 "initial apicid\t: %d\n" 353 "fpu\t\t: %s\n" 354 "fpu_exception\t: %s\n" 355 "cpuid level\t: %d\n" 356 "wp\t\t: %s\n", 357 i, cpu_vendor, CPUID_TO_FAMILY(cpu_id), 358 CPUID_TO_MODEL(cpu_id), model, cpu_id & CPUID_STEPPING, 359 fqmhz, fqkhz, 360 (cache_size[2] >> 16), 0, mp_ncpus, i, mp_ncpus, 361 i, i, /*cpu_id & CPUID_LOCAL_APIC_ID ??*/ 362 (cpu_feature & CPUID_FPU) ? "yes" : "no", "yes", 363 CPUID_TO_FAMILY(cpu_id), "yes"); 364 sbuf_cat(sb, "flags\t\t:"); 365 for (j = 0; j < nitems(cpu_feature_names); j++) 366 if (cpu_feature & (1 << j) && 367 cpu_feature_names[j][0] != '\0') 368 sbuf_printf(sb, " %s", cpu_feature_names[j]); 369 for (j = 0; j < nitems(amd_feature_names); j++) 370 if (amd_feature & (1 << j) && 371 amd_feature_names[j][0] != '\0') 372 sbuf_printf(sb, " %s", amd_feature_names[j]); 373 for (j = 0; j < nitems(cpu_feature2_names); j++) 374 if (cpu_feature2 & (1 << j) && 375 cpu_feature2_names[j][0] != '\0') 376 sbuf_printf(sb, " %s", cpu_feature2_names[j]); 377 for (j = 0; j < nitems(amd_feature2_names); j++) 378 if (amd_feature2 & (1 << j) && 379 amd_feature2_names[j][0] != '\0') 380 sbuf_printf(sb, " %s", amd_feature2_names[j]); 381 for (j = 0; j < nitems(cpu_stdext_feature_names); j++) 382 if (cpu_stdext_feature & (1 << j) && 383 cpu_stdext_feature_names[j][0] != '\0') 384 sbuf_printf(sb, " %s", 385 cpu_stdext_feature_names[j]); 386 if (tsc_is_invariant) 387 sbuf_cat(sb, " constant_tsc"); 388 for (j = 0; j < nitems(cpu_stdext_feature2_names); j++) 389 if (cpu_stdext_feature2 & (1 << j) && 390 cpu_stdext_feature2_names[j][0] != '\0') 391 sbuf_printf(sb, " %s", 392 cpu_stdext_feature2_names[j]); 393 for (j = 0; j < nitems(cpu_stdext_feature3_names); j++) 394 if (cpu_stdext_feature3 & (1 << j) && 395 cpu_stdext_feature3_names[j][0] != '\0') 396 sbuf_printf(sb, " %s", 397 cpu_stdext_feature3_names[j]); 398 if ((cpu_feature2 & CPUID2_XSAVE) != 0) { 399 cpuid_count(0xd, 0x1, regs); 400 for (j = 0; j < nitems(cpu_stdext_feature_l1_names); j++) 401 if (regs[0] & (1 << j) && 402 cpu_stdext_feature_l1_names[j][0] != '\0') 403 sbuf_printf(sb, " %s", 404 cpu_stdext_feature_l1_names[j]); 405 } 406 sbuf_cat(sb, "\n"); 407 sbuf_printf(sb, 408 "bugs\t\t: %s\n" 409 "bogomips\t: %d.%02d\n" 410 "clflush size\t: %d\n" 411 "cache_alignment\t: %d\n" 412 "address sizes\t: %d bits physical, %d bits virtual\n", 413 #if defined(I586_CPU) && !defined(NO_F00F_HACK) 414 (has_f00f_bug) ? "Intel F00F" : "", 415 #else 416 "", 417 #endif 418 fqmhz * 2, fqkhz, 419 cpu_clflush_line_size, cpu_clflush_line_size, 420 cpu_maxphyaddr, 421 (cpu_maxphyaddr > 32) ? 48 : 0); 422 sbuf_cat(sb, "power management: "); 423 for (j = 0; j < nitems(power_flags); j++) 424 if (amd_pminfo & (1 << j)) 425 sbuf_printf(sb, " %s", power_flags[j]); 426 sbuf_cat(sb, "\n\n"); 427 428 /* XXX per-cpu vendor / class / model / id? */ 429 } 430 sbuf_cat(sb, "\n"); 431 432 return (0); 433 } 434 #else 435 /* ARM64TODO: implement non-stubbed linprocfs_docpuinfo */ 436 static int 437 linprocfs_docpuinfo(PFS_FILL_ARGS) 438 { 439 int i; 440 441 for (i = 0; i < mp_ncpus; ++i) { 442 sbuf_printf(sb, 443 "processor\t: %d\n" 444 "BogoMIPS\t: %d.%02d\n", 445 i, 0, 0); 446 sbuf_cat(sb, "Features\t: "); 447 sbuf_cat(sb, "\n"); 448 sbuf_printf(sb, 449 "CPU implementer\t: \n" 450 "CPU architecture: \n" 451 "CPU variant\t: 0x%x\n" 452 "CPU part\t: 0x%x\n" 453 "CPU revision\t: %d\n", 454 0, 0, 0); 455 sbuf_cat(sb, "\n"); 456 } 457 458 return (0); 459 } 460 #endif /* __i386__ || __amd64__ */ 461 462 static const char *path_slash_sys = "/sys"; 463 static const char *fstype_sysfs = "sysfs"; 464 465 static int 466 _mtab_helper(const struct pfs_node *pn, const struct statfs *sp, 467 const char **mntfrom, const char **mntto, const char **fstype) 468 { 469 /* determine device name */ 470 *mntfrom = sp->f_mntfromname; 471 472 /* determine mount point */ 473 *mntto = sp->f_mntonname; 474 475 /* determine fs type */ 476 *fstype = sp->f_fstypename; 477 if (strcmp(*fstype, pn->pn_info->pi_name) == 0) 478 *mntfrom = *fstype = "proc"; 479 else if (strcmp(*fstype, "procfs") == 0) 480 return (ECANCELED); 481 482 if (strcmp(*fstype, "autofs") == 0) { 483 /* 484 * FreeBSD uses eg "map -hosts", whereas Linux 485 * expects just "-hosts". 486 */ 487 if (strncmp(*mntfrom, "map ", 4) == 0) 488 *mntfrom += 4; 489 } 490 491 if (strcmp(*fstype, "linsysfs") == 0) { 492 *mntfrom = path_slash_sys; 493 *fstype = fstype_sysfs; 494 } else { 495 /* For Linux msdosfs is called vfat */ 496 if (strcmp(*fstype, "msdosfs") == 0) 497 *fstype = "vfat"; 498 } 499 return (0); 500 } 501 502 static void 503 _sbuf_mntoptions_helper(struct sbuf *sb, uint64_t f_flags) 504 { 505 sbuf_cat(sb, (f_flags & MNT_RDONLY) ? "ro" : "rw"); 506 #define ADD_OPTION(opt, name) \ 507 if (f_flags & (opt)) sbuf_cat(sb, "," name); 508 ADD_OPTION(MNT_SYNCHRONOUS, "sync"); 509 ADD_OPTION(MNT_NOEXEC, "noexec"); 510 ADD_OPTION(MNT_NOSUID, "nosuid"); 511 ADD_OPTION(MNT_UNION, "union"); 512 ADD_OPTION(MNT_ASYNC, "async"); 513 ADD_OPTION(MNT_SUIDDIR, "suiddir"); 514 ADD_OPTION(MNT_NOSYMFOLLOW, "nosymfollow"); 515 ADD_OPTION(MNT_NOATIME, "noatime"); 516 #undef ADD_OPTION 517 } 518 519 /* 520 * Filler function for proc/mtab and proc/<pid>/mounts. 521 * 522 * /proc/mtab doesn't exist in Linux' procfs, but is included here so 523 * users can symlink /compat/linux/etc/mtab to /proc/mtab 524 */ 525 static int 526 linprocfs_domtab(PFS_FILL_ARGS) 527 { 528 struct nameidata nd; 529 const char *lep, *mntto, *mntfrom, *fstype; 530 char *dlep, *flep; 531 size_t lep_len; 532 int error; 533 struct statfs *buf, *sp; 534 size_t count; 535 536 /* resolve symlinks etc. in the emulation tree prefix */ 537 /* 538 * Ideally, this would use the current chroot rather than some 539 * hardcoded path. 540 */ 541 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, linux_emul_path); 542 flep = NULL; 543 error = namei(&nd); 544 lep = linux_emul_path; 545 if (error == 0) { 546 if (vn_fullpath(nd.ni_vp, &dlep, &flep) == 0) 547 lep = dlep; 548 vrele(nd.ni_vp); 549 } 550 lep_len = strlen(lep); 551 552 buf = NULL; 553 error = kern_getfsstat(td, &buf, SIZE_T_MAX, &count, 554 UIO_SYSSPACE, MNT_WAIT); 555 if (error != 0) { 556 free(buf, M_TEMP); 557 free(flep, M_TEMP); 558 return (error); 559 } 560 561 for (sp = buf; count > 0; sp++, count--) { 562 error = _mtab_helper(pn, sp, &mntfrom, &mntto, &fstype); 563 if (error != 0) { 564 MPASS(error == ECANCELED); 565 continue; 566 } 567 568 /* determine mount point */ 569 if (strncmp(mntto, lep, lep_len) == 0 && mntto[lep_len] == '/') 570 mntto += lep_len; 571 572 sbuf_printf(sb, "%s %s %s ", mntfrom, mntto, fstype); 573 _sbuf_mntoptions_helper(sb, sp->f_flags); 574 /* a real Linux mtab will also show NFS options */ 575 sbuf_printf(sb, " 0 0\n"); 576 } 577 578 free(buf, M_TEMP); 579 free(flep, M_TEMP); 580 return (error); 581 } 582 583 static int 584 linprocfs_doprocmountinfo(PFS_FILL_ARGS) 585 { 586 struct nameidata nd; 587 const char *mntfrom, *mntto, *fstype; 588 const char *lep; 589 char *dlep, *flep; 590 struct statfs *buf, *sp; 591 size_t count, lep_len; 592 int error; 593 594 /* 595 * Ideally, this would use the current chroot rather than some 596 * hardcoded path. 597 */ 598 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, linux_emul_path); 599 flep = NULL; 600 error = namei(&nd); 601 lep = linux_emul_path; 602 if (error == 0) { 603 if (vn_fullpath(nd.ni_vp, &dlep, &flep) == 0) 604 lep = dlep; 605 vrele(nd.ni_vp); 606 } 607 lep_len = strlen(lep); 608 609 buf = NULL; 610 error = kern_getfsstat(td, &buf, SIZE_T_MAX, &count, 611 UIO_SYSSPACE, MNT_WAIT); 612 if (error != 0) 613 goto out; 614 615 for (sp = buf; count > 0; sp++, count--) { 616 error = _mtab_helper(pn, sp, &mntfrom, &mntto, &fstype); 617 if (error != 0) { 618 MPASS(error == ECANCELED); 619 continue; 620 } 621 622 if (strncmp(mntto, lep, lep_len) == 0 && mntto[lep_len] == '/') 623 mntto += lep_len; 624 #if 0 625 /* 626 * If the prefix is a chroot, and this mountpoint is not under 627 * the prefix, we should skip it. Leave it for now for 628 * consistency with procmtab above. 629 */ 630 else 631 continue; 632 #endif 633 634 /* 635 * (1) mount id 636 * 637 * (2) parent mount id -- we don't have this cheaply, so 638 * provide a dummy value 639 * 640 * (3) major:minor -- ditto 641 * 642 * (4) root filesystem mount -- probably a namespaces thing 643 * 644 * (5) mountto path 645 */ 646 sbuf_printf(sb, "%u 0 0:0 / %s ", 647 sp->f_fsid.val[0] ^ sp->f_fsid.val[1], mntto); 648 /* (6) mount options */ 649 _sbuf_mntoptions_helper(sb, sp->f_flags); 650 /* 651 * (7) zero or more optional fields -- again, namespace related 652 * 653 * (8) End of variable length fields separator ("-") 654 * 655 * (9) fstype 656 * 657 * (10) mount from 658 * 659 * (11) "superblock" options -- like (6), but different 660 * semantics in Linux 661 */ 662 sbuf_printf(sb, " - %s %s %s\n", fstype, mntfrom, 663 (sp->f_flags & MNT_RDONLY) ? "ro" : "rw"); 664 } 665 666 error = 0; 667 out: 668 free(buf, M_TEMP); 669 free(flep, M_TEMP); 670 return (error); 671 } 672 673 /* 674 * Filler function for proc/partitions 675 */ 676 static int 677 linprocfs_dopartitions(PFS_FILL_ARGS) 678 { 679 struct g_class *cp; 680 struct g_geom *gp; 681 struct g_provider *pp; 682 int major, minor; 683 684 g_topology_lock(); 685 sbuf_printf(sb, "major minor #blocks name rio rmerge rsect " 686 "ruse wio wmerge wsect wuse running use aveq\n"); 687 688 LIST_FOREACH(cp, &g_classes, class) { 689 if (strcmp(cp->name, "DISK") == 0 || 690 strcmp(cp->name, "PART") == 0) 691 LIST_FOREACH(gp, &cp->geom, geom) { 692 LIST_FOREACH(pp, &gp->provider, provider) { 693 if (linux_driver_get_major_minor( 694 pp->name, &major, &minor) != 0) { 695 major = 0; 696 minor = 0; 697 } 698 sbuf_printf(sb, "%d %d %lld %s " 699 "%d %d %d %d %d " 700 "%d %d %d %d %d %d\n", 701 major, minor, 702 (long long)pp->mediasize, pp->name, 703 0, 0, 0, 0, 0, 704 0, 0, 0, 0, 0, 0); 705 } 706 } 707 } 708 g_topology_unlock(); 709 710 return (0); 711 } 712 713 /* 714 * Filler function for proc/stat 715 * 716 * Output depends on kernel version: 717 * 718 * v2.5.40 <= 719 * user nice system idle 720 * v2.5.41 721 * user nice system idle iowait 722 * v2.6.11 723 * user nice system idle iowait irq softirq steal 724 * v2.6.24 725 * user nice system idle iowait irq softirq steal guest 726 * v2.6.33 >= 727 * user nice system idle iowait irq softirq steal guest guest_nice 728 */ 729 static int 730 linprocfs_dostat(PFS_FILL_ARGS) 731 { 732 struct pcpu *pcpu; 733 long cp_time[CPUSTATES]; 734 long *cp; 735 struct timeval boottime; 736 int i; 737 char *zero_pad; 738 bool has_intr = true; 739 740 if (linux_kernver(td) >= LINUX_KERNVER(2,6,33)) { 741 zero_pad = " 0 0 0 0\n"; 742 } else if (linux_kernver(td) >= LINUX_KERNVER(2,6,24)) { 743 zero_pad = " 0 0 0\n"; 744 } else if (linux_kernver(td) >= LINUX_KERNVER(2,6,11)) { 745 zero_pad = " 0 0\n"; 746 } else if (linux_kernver(td) >= LINUX_KERNVER(2,5,41)) { 747 has_intr = false; 748 zero_pad = " 0\n"; 749 } else { 750 has_intr = false; 751 zero_pad = "\n"; 752 } 753 754 read_cpu_time(cp_time); 755 getboottime(&boottime); 756 /* Parameters common to all versions */ 757 sbuf_printf(sb, "cpu %lu %lu %lu %lu", 758 T2J(cp_time[CP_USER]), 759 T2J(cp_time[CP_NICE]), 760 T2J(cp_time[CP_SYS]), 761 T2J(cp_time[CP_IDLE])); 762 763 /* Print interrupt stats if available */ 764 if (has_intr) { 765 sbuf_printf(sb, " 0 %lu", T2J(cp_time[CP_INTR])); 766 } 767 768 /* Pad out remaining fields depending on version */ 769 sbuf_printf(sb, "%s", zero_pad); 770 771 CPU_FOREACH(i) { 772 pcpu = pcpu_find(i); 773 cp = pcpu->pc_cp_time; 774 sbuf_printf(sb, "cpu%d %lu %lu %lu %lu", i, 775 T2J(cp[CP_USER]), 776 T2J(cp[CP_NICE]), 777 T2J(cp[CP_SYS]), 778 T2J(cp[CP_IDLE])); 779 780 if (has_intr) { 781 sbuf_printf(sb, " 0 %lu", T2J(cp[CP_INTR])); 782 } 783 784 sbuf_printf(sb, "%s", zero_pad); 785 } 786 sbuf_printf(sb, 787 "disk 0 0 0 0\n" 788 "page %ju %ju\n" 789 "swap %ju %ju\n" 790 "intr %ju\n" 791 "ctxt %ju\n" 792 "btime %lld\n", 793 (uintmax_t)VM_CNT_FETCH(v_vnodepgsin), 794 (uintmax_t)VM_CNT_FETCH(v_vnodepgsout), 795 (uintmax_t)VM_CNT_FETCH(v_swappgsin), 796 (uintmax_t)VM_CNT_FETCH(v_swappgsout), 797 (uintmax_t)VM_CNT_FETCH(v_intr), 798 (uintmax_t)VM_CNT_FETCH(v_swtch), 799 (long long)boottime.tv_sec); 800 return (0); 801 } 802 803 static int 804 linprocfs_doswaps(PFS_FILL_ARGS) 805 { 806 struct xswdev xsw; 807 uintmax_t total, used; 808 int n; 809 char devname[SPECNAMELEN + 1]; 810 811 sbuf_printf(sb, "Filename\t\t\t\tType\t\tSize\tUsed\tPriority\n"); 812 for (n = 0; ; n++) { 813 if (swap_dev_info(n, &xsw, devname, sizeof(devname)) != 0) 814 break; 815 total = (uintmax_t)xsw.xsw_nblks * PAGE_SIZE / 1024; 816 used = (uintmax_t)xsw.xsw_used * PAGE_SIZE / 1024; 817 818 /* 819 * The space and not tab after the device name is on 820 * purpose. Linux does so. 821 */ 822 sbuf_printf(sb, "/dev/%-34s unknown\t\t%jd\t%jd\t-1\n", 823 devname, total, used); 824 } 825 return (0); 826 } 827 828 /* 829 * Filler function for proc/uptime 830 */ 831 static int 832 linprocfs_douptime(PFS_FILL_ARGS) 833 { 834 long cp_time[CPUSTATES]; 835 struct timeval tv; 836 837 getmicrouptime(&tv); 838 read_cpu_time(cp_time); 839 sbuf_printf(sb, "%lld.%02ld %ld.%02lu\n", 840 (long long)tv.tv_sec, tv.tv_usec / 10000, 841 T2S(cp_time[CP_IDLE] / mp_ncpus), 842 T2CS(cp_time[CP_IDLE] / mp_ncpus) % 100); 843 return (0); 844 } 845 846 /* 847 * Get OS build date 848 */ 849 static void 850 linprocfs_osbuild(struct thread *td, struct sbuf *sb) 851 { 852 #if 0 853 char osbuild[256]; 854 char *cp1, *cp2; 855 856 strncpy(osbuild, version, 256); 857 osbuild[255] = '\0'; 858 cp1 = strstr(osbuild, "\n"); 859 cp2 = strstr(osbuild, ":"); 860 if (cp1 && cp2) { 861 *cp1 = *cp2 = '\0'; 862 cp1 = strstr(osbuild, "#"); 863 } else 864 cp1 = NULL; 865 if (cp1) 866 sbuf_printf(sb, "%s%s", cp1, cp2 + 1); 867 else 868 #endif 869 sbuf_cat(sb, "#4 Sun Dec 18 04:30:00 CET 1977"); 870 } 871 872 /* 873 * Get OS builder 874 */ 875 static void 876 linprocfs_osbuilder(struct thread *td, struct sbuf *sb) 877 { 878 #if 0 879 char builder[256]; 880 char *cp; 881 882 cp = strstr(version, "\n "); 883 if (cp) { 884 strncpy(builder, cp + 5, 256); 885 builder[255] = '\0'; 886 cp = strstr(builder, ":"); 887 if (cp) 888 *cp = '\0'; 889 } 890 if (cp) 891 sbuf_cat(sb, builder); 892 else 893 #endif 894 sbuf_cat(sb, "des@freebsd.org"); 895 } 896 897 /* 898 * Filler function for proc/version 899 */ 900 static int 901 linprocfs_doversion(PFS_FILL_ARGS) 902 { 903 char osname[LINUX_MAX_UTSNAME]; 904 char osrelease[LINUX_MAX_UTSNAME]; 905 906 linux_get_osname(td, osname); 907 linux_get_osrelease(td, osrelease); 908 sbuf_printf(sb, "%s version %s (", osname, osrelease); 909 linprocfs_osbuilder(td, sb); 910 sbuf_cat(sb, ") (gcc version " __VERSION__ ") "); 911 linprocfs_osbuild(td, sb); 912 sbuf_cat(sb, "\n"); 913 914 return (0); 915 } 916 917 /* 918 * Filler function for proc/loadavg 919 */ 920 static int 921 linprocfs_doloadavg(PFS_FILL_ARGS) 922 { 923 924 sbuf_printf(sb, 925 "%d.%02d %d.%02d %d.%02d %d/%d %d\n", 926 (int)(averunnable.ldavg[0] / averunnable.fscale), 927 (int)(averunnable.ldavg[0] * 100 / averunnable.fscale % 100), 928 (int)(averunnable.ldavg[1] / averunnable.fscale), 929 (int)(averunnable.ldavg[1] * 100 / averunnable.fscale % 100), 930 (int)(averunnable.ldavg[2] / averunnable.fscale), 931 (int)(averunnable.ldavg[2] * 100 / averunnable.fscale % 100), 932 1, /* number of running tasks */ 933 nprocs, /* number of tasks */ 934 lastpid /* the last pid */ 935 ); 936 return (0); 937 } 938 939 static int 940 linprocfs_get_tty_nr(struct proc *p) 941 { 942 struct session *sp; 943 const char *ttyname; 944 int error, major, minor, nr; 945 946 PROC_LOCK_ASSERT(p, MA_OWNED); 947 sx_assert(&proctree_lock, SX_LOCKED); 948 949 if ((p->p_flag & P_CONTROLT) == 0) 950 return (-1); 951 952 sp = p->p_pgrp->pg_session; 953 if (sp == NULL) 954 return (-1); 955 956 ttyname = devtoname(sp->s_ttyp->t_dev); 957 error = linux_driver_get_major_minor(ttyname, &major, &minor); 958 if (error != 0) 959 return (-1); 960 961 nr = makedev(major, minor); 962 return (nr); 963 } 964 965 /* 966 * Filler function for proc/pid/stat 967 */ 968 static int 969 linprocfs_doprocstat(PFS_FILL_ARGS) 970 { 971 struct kinfo_proc kp; 972 struct timeval boottime; 973 char state; 974 static int ratelimit = 0; 975 int tty_nr; 976 vm_offset_t startcode, startdata; 977 978 getboottime(&boottime); 979 sx_slock(&proctree_lock); 980 PROC_LOCK(p); 981 fill_kinfo_proc(p, &kp); 982 tty_nr = linprocfs_get_tty_nr(p); 983 sx_sunlock(&proctree_lock); 984 if (p->p_vmspace) { 985 startcode = (vm_offset_t)p->p_vmspace->vm_taddr; 986 startdata = (vm_offset_t)p->p_vmspace->vm_daddr; 987 } else { 988 startcode = 0; 989 startdata = 0; 990 } 991 sbuf_printf(sb, "%d", p->p_pid); 992 #define PS_ADD(name, fmt, arg) sbuf_printf(sb, " " fmt, arg) 993 PS_ADD("comm", "(%s)", p->p_comm); 994 if (kp.ki_stat > sizeof(linux_state)) { 995 state = 'R'; 996 997 if (ratelimit == 0) { 998 printf("linprocfs: don't know how to handle unknown FreeBSD state %d/%zd, mapping to R\n", 999 kp.ki_stat, sizeof(linux_state)); 1000 ++ratelimit; 1001 } 1002 } else 1003 state = linux_state[kp.ki_stat - 1]; 1004 PS_ADD("state", "%c", state); 1005 PS_ADD("ppid", "%d", p->p_pptr ? p->p_pptr->p_pid : 0); 1006 PS_ADD("pgrp", "%d", p->p_pgid); 1007 PS_ADD("session", "%d", p->p_session->s_sid); 1008 PROC_UNLOCK(p); 1009 PS_ADD("tty", "%d", tty_nr); 1010 PS_ADD("tpgid", "%d", kp.ki_tpgid); 1011 PS_ADD("flags", "%u", 0); /* XXX */ 1012 PS_ADD("minflt", "%lu", kp.ki_rusage.ru_minflt); 1013 PS_ADD("cminflt", "%lu", kp.ki_rusage_ch.ru_minflt); 1014 PS_ADD("majflt", "%lu", kp.ki_rusage.ru_majflt); 1015 PS_ADD("cmajflt", "%lu", kp.ki_rusage_ch.ru_majflt); 1016 PS_ADD("utime", "%ld", TV2J(&kp.ki_rusage.ru_utime)); 1017 PS_ADD("stime", "%ld", TV2J(&kp.ki_rusage.ru_stime)); 1018 PS_ADD("cutime", "%ld", TV2J(&kp.ki_rusage_ch.ru_utime)); 1019 PS_ADD("cstime", "%ld", TV2J(&kp.ki_rusage_ch.ru_stime)); 1020 PS_ADD("priority", "%d", kp.ki_pri.pri_user); 1021 PS_ADD("nice", "%d", kp.ki_nice); /* 19 (nicest) to -19 */ 1022 PS_ADD("0", "%d", 0); /* removed field */ 1023 PS_ADD("itrealvalue", "%d", 0); /* XXX */ 1024 PS_ADD("starttime", "%lu", TV2J(&kp.ki_start) - TV2J(&boottime)); 1025 PS_ADD("vsize", "%ju", P2K((uintmax_t)kp.ki_size)); 1026 PS_ADD("rss", "%ju", (uintmax_t)kp.ki_rssize); 1027 PS_ADD("rlim", "%lu", kp.ki_rusage.ru_maxrss); 1028 PS_ADD("startcode", "%ju", (uintmax_t)startcode); 1029 PS_ADD("endcode", "%ju", (uintmax_t)startdata); 1030 PS_ADD("startstack", "%u", 0); /* XXX */ 1031 PS_ADD("kstkesp", "%u", 0); /* XXX */ 1032 PS_ADD("kstkeip", "%u", 0); /* XXX */ 1033 PS_ADD("signal", "%u", 0); /* XXX */ 1034 PS_ADD("blocked", "%u", 0); /* XXX */ 1035 PS_ADD("sigignore", "%u", 0); /* XXX */ 1036 PS_ADD("sigcatch", "%u", 0); /* XXX */ 1037 PS_ADD("wchan", "%u", 0); /* XXX */ 1038 PS_ADD("nswap", "%lu", kp.ki_rusage.ru_nswap); 1039 PS_ADD("cnswap", "%lu", kp.ki_rusage_ch.ru_nswap); 1040 PS_ADD("exitsignal", "%d", 0); /* XXX */ 1041 PS_ADD("processor", "%u", kp.ki_lastcpu); 1042 PS_ADD("rt_priority", "%u", 0); /* XXX */ /* >= 2.5.19 */ 1043 PS_ADD("policy", "%u", kp.ki_pri.pri_class); /* >= 2.5.19 */ 1044 #undef PS_ADD 1045 sbuf_putc(sb, '\n'); 1046 1047 return (0); 1048 } 1049 1050 /* 1051 * Filler function for proc/pid/statm 1052 */ 1053 static int 1054 linprocfs_doprocstatm(PFS_FILL_ARGS) 1055 { 1056 struct kinfo_proc kp; 1057 segsz_t lsize; 1058 1059 sx_slock(&proctree_lock); 1060 PROC_LOCK(p); 1061 fill_kinfo_proc(p, &kp); 1062 PROC_UNLOCK(p); 1063 sx_sunlock(&proctree_lock); 1064 1065 /* 1066 * See comments in linprocfs_doprocstatus() regarding the 1067 * computation of lsize. 1068 */ 1069 /* size resident share trs drs lrs dt */ 1070 sbuf_printf(sb, "%ju ", B2P((uintmax_t)kp.ki_size)); 1071 sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_rssize); 1072 sbuf_printf(sb, "%ju ", (uintmax_t)0); /* XXX */ 1073 sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_tsize); 1074 sbuf_printf(sb, "%ju ", (uintmax_t)(kp.ki_dsize + kp.ki_ssize)); 1075 lsize = B2P(kp.ki_size) - kp.ki_dsize - 1076 kp.ki_ssize - kp.ki_tsize - 1; 1077 sbuf_printf(sb, "%ju ", (uintmax_t)lsize); 1078 sbuf_printf(sb, "%ju\n", (uintmax_t)0); /* XXX */ 1079 1080 return (0); 1081 } 1082 1083 /* 1084 * Filler function for proc/pid/status 1085 */ 1086 static int 1087 linprocfs_doprocstatus(PFS_FILL_ARGS) 1088 { 1089 struct kinfo_proc kp; 1090 char *state; 1091 segsz_t lsize; 1092 struct thread *td2; 1093 struct sigacts *ps; 1094 l_sigset_t siglist, sigignore, sigcatch; 1095 int i; 1096 1097 sx_slock(&proctree_lock); 1098 PROC_LOCK(p); 1099 td2 = FIRST_THREAD_IN_PROC(p); 1100 1101 if (P_SHOULDSTOP(p)) { 1102 state = "T (stopped)"; 1103 } else { 1104 switch(p->p_state) { 1105 case PRS_NEW: 1106 state = "I (idle)"; 1107 break; 1108 case PRS_NORMAL: 1109 if (p->p_flag & P_WEXIT) { 1110 state = "X (exiting)"; 1111 break; 1112 } 1113 switch(TD_GET_STATE(td2)) { 1114 case TDS_INHIBITED: 1115 state = "S (sleeping)"; 1116 break; 1117 case TDS_RUNQ: 1118 case TDS_RUNNING: 1119 state = "R (running)"; 1120 break; 1121 default: 1122 state = "? (unknown)"; 1123 break; 1124 } 1125 break; 1126 case PRS_ZOMBIE: 1127 state = "Z (zombie)"; 1128 break; 1129 default: 1130 state = "? (unknown)"; 1131 break; 1132 } 1133 } 1134 1135 fill_kinfo_proc(p, &kp); 1136 sx_sunlock(&proctree_lock); 1137 1138 sbuf_printf(sb, "Name:\t%s\n", p->p_comm); /* XXX escape */ 1139 sbuf_printf(sb, "State:\t%s\n", state); 1140 1141 /* 1142 * Credentials 1143 */ 1144 sbuf_printf(sb, "Tgid:\t%d\n", p->p_pid); 1145 sbuf_printf(sb, "Pid:\t%d\n", p->p_pid); 1146 sbuf_printf(sb, "PPid:\t%d\n", kp.ki_ppid ); 1147 sbuf_printf(sb, "TracerPid:\t%d\n", kp.ki_tracer ); 1148 sbuf_printf(sb, "Uid:\t%d\t%d\t%d\t%d\n", p->p_ucred->cr_ruid, 1149 p->p_ucred->cr_uid, 1150 p->p_ucred->cr_svuid, 1151 /* FreeBSD doesn't have fsuid */ 1152 p->p_ucred->cr_uid); 1153 sbuf_printf(sb, "Gid:\t%d\t%d\t%d\t%d\n", p->p_ucred->cr_rgid, 1154 p->p_ucred->cr_gid, 1155 p->p_ucred->cr_svgid, 1156 /* FreeBSD doesn't have fsgid */ 1157 p->p_ucred->cr_gid); 1158 sbuf_cat(sb, "Groups:\t"); 1159 for (i = 0; i < p->p_ucred->cr_ngroups; i++) 1160 sbuf_printf(sb, "%d ", p->p_ucred->cr_groups[i]); 1161 PROC_UNLOCK(p); 1162 sbuf_putc(sb, '\n'); 1163 1164 /* 1165 * Memory 1166 * 1167 * While our approximation of VmLib may not be accurate (I 1168 * don't know of a simple way to verify it, and I'm not sure 1169 * it has much meaning anyway), I believe it's good enough. 1170 * 1171 * The same code that could (I think) accurately compute VmLib 1172 * could also compute VmLck, but I don't really care enough to 1173 * implement it. Submissions are welcome. 1174 */ 1175 sbuf_printf(sb, "VmSize:\t%8ju kB\n", B2K((uintmax_t)kp.ki_size)); 1176 sbuf_printf(sb, "VmLck:\t%8u kB\n", P2K(0)); /* XXX */ 1177 sbuf_printf(sb, "VmRSS:\t%8ju kB\n", P2K((uintmax_t)kp.ki_rssize)); 1178 sbuf_printf(sb, "VmData:\t%8ju kB\n", P2K((uintmax_t)kp.ki_dsize)); 1179 sbuf_printf(sb, "VmStk:\t%8ju kB\n", P2K((uintmax_t)kp.ki_ssize)); 1180 sbuf_printf(sb, "VmExe:\t%8ju kB\n", P2K((uintmax_t)kp.ki_tsize)); 1181 lsize = B2P(kp.ki_size) - kp.ki_dsize - 1182 kp.ki_ssize - kp.ki_tsize - 1; 1183 sbuf_printf(sb, "VmLib:\t%8ju kB\n", P2K((uintmax_t)lsize)); 1184 1185 /* 1186 * Signal masks 1187 */ 1188 PROC_LOCK(p); 1189 bsd_to_linux_sigset(&p->p_siglist, &siglist); 1190 ps = p->p_sigacts; 1191 mtx_lock(&ps->ps_mtx); 1192 bsd_to_linux_sigset(&ps->ps_sigignore, &sigignore); 1193 bsd_to_linux_sigset(&ps->ps_sigcatch, &sigcatch); 1194 mtx_unlock(&ps->ps_mtx); 1195 PROC_UNLOCK(p); 1196 1197 sbuf_printf(sb, "SigPnd:\t%016jx\n", siglist.__mask); 1198 /* 1199 * XXX. SigBlk - target thread's signal mask, td_sigmask. 1200 * To implement SigBlk pseudofs should support proc/tid dir entries. 1201 */ 1202 sbuf_printf(sb, "SigBlk:\t%016x\n", 0); 1203 sbuf_printf(sb, "SigIgn:\t%016jx\n", sigignore.__mask); 1204 sbuf_printf(sb, "SigCgt:\t%016jx\n", sigcatch.__mask); 1205 1206 /* 1207 * Linux also prints the capability masks, but we don't have 1208 * capabilities yet, and when we do get them they're likely to 1209 * be meaningless to Linux programs, so we lie. XXX 1210 */ 1211 sbuf_printf(sb, "CapInh:\t%016x\n", 0); 1212 sbuf_printf(sb, "CapPrm:\t%016x\n", 0); 1213 sbuf_printf(sb, "CapEff:\t%016x\n", 0); 1214 1215 return (0); 1216 } 1217 1218 /* 1219 * Filler function for proc/pid/cwd 1220 */ 1221 static int 1222 linprocfs_doproccwd(PFS_FILL_ARGS) 1223 { 1224 struct pwd *pwd; 1225 char *fullpath = "unknown"; 1226 char *freepath = NULL; 1227 1228 pwd = pwd_hold_proc(p); 1229 vn_fullpath(pwd->pwd_cdir, &fullpath, &freepath); 1230 sbuf_printf(sb, "%s", fullpath); 1231 if (freepath) 1232 free(freepath, M_TEMP); 1233 pwd_drop(pwd); 1234 return (0); 1235 } 1236 1237 /* 1238 * Filler function for proc/pid/root 1239 */ 1240 static int 1241 linprocfs_doprocroot(PFS_FILL_ARGS) 1242 { 1243 struct pwd *pwd; 1244 struct vnode *vp; 1245 char *fullpath = "unknown"; 1246 char *freepath = NULL; 1247 1248 pwd = pwd_hold_proc(p); 1249 vp = jailed(p->p_ucred) ? pwd->pwd_jdir : pwd->pwd_rdir; 1250 vn_fullpath(vp, &fullpath, &freepath); 1251 sbuf_printf(sb, "%s", fullpath); 1252 if (freepath) 1253 free(freepath, M_TEMP); 1254 pwd_drop(pwd); 1255 return (0); 1256 } 1257 1258 /* 1259 * Filler function for proc/pid/cmdline 1260 */ 1261 static int 1262 linprocfs_doproccmdline(PFS_FILL_ARGS) 1263 { 1264 int ret; 1265 1266 PROC_LOCK(p); 1267 if ((ret = p_cansee(td, p)) != 0) { 1268 PROC_UNLOCK(p); 1269 return (ret); 1270 } 1271 1272 /* 1273 * Mimic linux behavior and pass only processes with usermode 1274 * address space as valid. Return zero silently otherwize. 1275 */ 1276 if (p->p_vmspace == &vmspace0) { 1277 PROC_UNLOCK(p); 1278 return (0); 1279 } 1280 if (p->p_args != NULL) { 1281 sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length); 1282 PROC_UNLOCK(p); 1283 return (0); 1284 } 1285 1286 if ((p->p_flag & P_SYSTEM) != 0) { 1287 PROC_UNLOCK(p); 1288 return (0); 1289 } 1290 1291 PROC_UNLOCK(p); 1292 1293 ret = proc_getargv(td, p, sb); 1294 return (ret); 1295 } 1296 1297 /* 1298 * Filler function for proc/pid/environ 1299 */ 1300 static int 1301 linprocfs_doprocenviron(PFS_FILL_ARGS) 1302 { 1303 1304 /* 1305 * Mimic linux behavior and pass only processes with usermode 1306 * address space as valid. Return zero silently otherwize. 1307 */ 1308 if (p->p_vmspace == &vmspace0) 1309 return (0); 1310 1311 return (proc_getenvv(td, p, sb)); 1312 } 1313 1314 static char l32_map_str[] = "%08lx-%08lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n"; 1315 static char l64_map_str[] = "%016lx-%016lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n"; 1316 static char vdso_str[] = " [vdso]"; 1317 static char stack_str[] = " [stack]"; 1318 1319 /* 1320 * Filler function for proc/pid/maps 1321 */ 1322 static int 1323 linprocfs_doprocmaps(PFS_FILL_ARGS) 1324 { 1325 struct vmspace *vm; 1326 vm_map_t map; 1327 vm_map_entry_t entry, tmp_entry; 1328 vm_object_t obj, tobj, lobj; 1329 vm_offset_t e_start, e_end; 1330 vm_ooffset_t off; 1331 vm_prot_t e_prot; 1332 unsigned int last_timestamp; 1333 char *name = "", *freename = NULL; 1334 const char *l_map_str; 1335 ino_t ino; 1336 int error; 1337 struct vnode *vp; 1338 struct vattr vat; 1339 bool private; 1340 1341 PROC_LOCK(p); 1342 error = p_candebug(td, p); 1343 PROC_UNLOCK(p); 1344 if (error) 1345 return (error); 1346 1347 if (uio->uio_rw != UIO_READ) 1348 return (EOPNOTSUPP); 1349 1350 error = 0; 1351 vm = vmspace_acquire_ref(p); 1352 if (vm == NULL) 1353 return (ESRCH); 1354 1355 if (SV_CURPROC_FLAG(SV_LP64)) 1356 l_map_str = l64_map_str; 1357 else 1358 l_map_str = l32_map_str; 1359 map = &vm->vm_map; 1360 vm_map_lock_read(map); 1361 VM_MAP_ENTRY_FOREACH(entry, map) { 1362 name = ""; 1363 freename = NULL; 1364 /* 1365 * Skip printing of the guard page of the stack region, as 1366 * it confuses glibc pthread_getattr_np() method, where both 1367 * the base address and size of the stack of the initial thread 1368 * are calculated. 1369 */ 1370 if ((entry->eflags & (MAP_ENTRY_IS_SUB_MAP | MAP_ENTRY_GUARD)) != 0) 1371 continue; 1372 e_prot = entry->protection; 1373 e_start = entry->start; 1374 e_end = entry->end; 1375 obj = entry->object.vm_object; 1376 off = entry->offset; 1377 for (lobj = tobj = obj; tobj != NULL; 1378 lobj = tobj, tobj = tobj->backing_object) { 1379 VM_OBJECT_RLOCK(tobj); 1380 off += lobj->backing_object_offset; 1381 if (lobj != obj) 1382 VM_OBJECT_RUNLOCK(lobj); 1383 } 1384 private = (entry->eflags & MAP_ENTRY_COW) != 0 || obj == NULL || 1385 (obj->flags & OBJ_ANON) != 0; 1386 last_timestamp = map->timestamp; 1387 vm_map_unlock_read(map); 1388 ino = 0; 1389 if (lobj) { 1390 vp = vm_object_vnode(lobj); 1391 if (vp != NULL) 1392 vref(vp); 1393 if (lobj != obj) 1394 VM_OBJECT_RUNLOCK(lobj); 1395 VM_OBJECT_RUNLOCK(obj); 1396 if (vp != NULL) { 1397 vn_fullpath(vp, &name, &freename); 1398 vn_lock(vp, LK_SHARED | LK_RETRY); 1399 VOP_GETATTR(vp, &vat, td->td_ucred); 1400 ino = vat.va_fileid; 1401 vput(vp); 1402 } else if (SV_PROC_ABI(p) == SV_ABI_LINUX) { 1403 /* 1404 * sv_shared_page_base pointed out to the 1405 * FreeBSD sharedpage, PAGE_SIZE is a size 1406 * of it. The vDSO page is above. 1407 */ 1408 if (e_start == p->p_sysent->sv_shared_page_base + 1409 PAGE_SIZE) 1410 name = vdso_str; 1411 if (e_end == p->p_sysent->sv_usrstack) 1412 name = stack_str; 1413 } 1414 } 1415 1416 /* 1417 * format: 1418 * start, end, access, offset, major, minor, inode, name. 1419 */ 1420 error = sbuf_printf(sb, l_map_str, 1421 (u_long)e_start, (u_long)e_end, 1422 (e_prot & VM_PROT_READ)?"r":"-", 1423 (e_prot & VM_PROT_WRITE)?"w":"-", 1424 (e_prot & VM_PROT_EXECUTE)?"x":"-", 1425 private ? "p" : "s", 1426 (u_long)off, 1427 0, 1428 0, 1429 (u_long)ino, 1430 *name ? " " : " ", 1431 name 1432 ); 1433 if (freename) 1434 free(freename, M_TEMP); 1435 vm_map_lock_read(map); 1436 if (error == -1) { 1437 error = 0; 1438 break; 1439 } 1440 if (last_timestamp != map->timestamp) { 1441 /* 1442 * Look again for the entry because the map was 1443 * modified while it was unlocked. Specifically, 1444 * the entry may have been clipped, merged, or deleted. 1445 */ 1446 vm_map_lookup_entry(map, e_end - 1, &tmp_entry); 1447 entry = tmp_entry; 1448 } 1449 } 1450 vm_map_unlock_read(map); 1451 vmspace_free(vm); 1452 1453 return (error); 1454 } 1455 1456 /* 1457 * Filler function for proc/pid/mem 1458 */ 1459 static int 1460 linprocfs_doprocmem(PFS_FILL_ARGS) 1461 { 1462 ssize_t resid; 1463 int error; 1464 1465 resid = uio->uio_resid; 1466 error = procfs_doprocmem(PFS_FILL_ARGNAMES); 1467 1468 if (uio->uio_rw == UIO_READ && resid != uio->uio_resid) 1469 return (0); 1470 1471 if (error == EFAULT) 1472 error = EIO; 1473 1474 return (error); 1475 } 1476 1477 struct linux_ifname_cb_s { 1478 struct ifnet *ifp; 1479 int ethno; 1480 char *buffer; 1481 size_t buflen; 1482 }; 1483 1484 static int 1485 linux_ifname_cb(if_t ifp, void *arg) 1486 { 1487 struct linux_ifname_cb_s *cbs = arg; 1488 1489 if (ifp == cbs->ifp) 1490 return (snprintf(cbs->buffer, cbs->buflen, "eth%d", cbs->ethno)); 1491 if (!linux_use_real_ifname(ifp)) 1492 cbs->ethno++; 1493 return (0); 1494 } 1495 1496 static int 1497 linux_ifname(struct ifnet *ifp, char *buffer, size_t buflen) 1498 { 1499 struct linux_ifname_cb_s arg; 1500 1501 IFNET_RLOCK_ASSERT(); 1502 1503 arg.ifp = ifp; 1504 arg.buffer = buffer; 1505 arg.buflen = buflen; 1506 arg.ethno = 0; 1507 1508 /* Short-circuit non ethernet interfaces */ 1509 if (linux_use_real_ifname(ifp)) 1510 return (strlcpy(buffer, if_name(ifp), buflen)); 1511 1512 /* Determine the (relative) unit number for ethernet interfaces */ 1513 return (if_foreach(linux_ifname_cb, &arg)); 1514 } 1515 1516 static int 1517 linprocfs_donetdev_cb(if_t ifp, void *arg) 1518 { 1519 char ifname[16]; /* XXX LINUX_IFNAMSIZ */ 1520 struct sbuf *sb = arg; 1521 1522 linux_ifname(ifp, ifname, sizeof ifname); 1523 sbuf_printf(sb, "%6.6s: ", ifname); 1524 sbuf_printf(sb, "%7ju %7ju %4ju %4ju %4lu %5lu %10lu %9ju ", 1525 (uintmax_t )if_getcounter(ifp, IFCOUNTER_IBYTES), 1526 (uintmax_t )if_getcounter(ifp, IFCOUNTER_IPACKETS), 1527 (uintmax_t )if_getcounter(ifp, IFCOUNTER_IERRORS), 1528 (uintmax_t )if_getcounter(ifp, IFCOUNTER_IQDROPS), 1529 /* rx_missed_errors */ 1530 0UL, /* rx_fifo_errors */ 1531 0UL, /* rx_length_errors + 1532 * rx_over_errors + 1533 * rx_crc_errors + 1534 * rx_frame_errors */ 1535 0UL, /* rx_compressed */ 1536 (uintmax_t )if_getcounter(ifp, IFCOUNTER_IMCASTS)); 1537 /* XXX-BZ rx only? */ 1538 sbuf_printf(sb, "%8ju %7ju %4ju %4ju %4lu %5ju %7lu %10lu\n", 1539 (uintmax_t )if_getcounter(ifp, IFCOUNTER_OBYTES), 1540 (uintmax_t )if_getcounter(ifp, IFCOUNTER_OPACKETS), 1541 (uintmax_t )if_getcounter(ifp, IFCOUNTER_OERRORS), 1542 (uintmax_t )if_getcounter(ifp, IFCOUNTER_OQDROPS), 1543 0UL, /* tx_fifo_errors */ 1544 (uintmax_t )if_getcounter(ifp, IFCOUNTER_COLLISIONS), 1545 0UL, /* tx_carrier_errors + 1546 * tx_aborted_errors + 1547 * tx_window_errors + 1548 * tx_heartbeat_errors*/ 1549 0UL); /* tx_compressed */ 1550 1551 return (0); 1552 } 1553 1554 /* 1555 * Filler function for proc/net/dev 1556 */ 1557 static int 1558 linprocfs_donetdev(PFS_FILL_ARGS) 1559 { 1560 sbuf_printf(sb, "%6s|%58s|%s\n" 1561 "%6s|%58s|%58s\n", 1562 "Inter-", " Receive", " Transmit", 1563 " face", 1564 "bytes packets errs drop fifo frame compressed multicast", 1565 "bytes packets errs drop fifo colls carrier compressed"); 1566 1567 CURVNET_SET(TD_TO_VNET(curthread)); 1568 IFNET_RLOCK(); 1569 if_foreach(linprocfs_donetdev_cb, sb); 1570 IFNET_RUNLOCK(); 1571 CURVNET_RESTORE(); 1572 1573 return (0); 1574 } 1575 1576 struct walkarg { 1577 struct sbuf *sb; 1578 }; 1579 1580 static int 1581 linux_route_print(struct rtentry *rt, void *vw) 1582 { 1583 #ifdef INET 1584 struct walkarg *w = vw; 1585 struct route_nhop_data rnd; 1586 struct in_addr dst, mask; 1587 struct nhop_object *nh; 1588 char ifname[16]; 1589 uint32_t scopeid = 0; 1590 uint32_t gw = 0; 1591 uint32_t linux_flags = 0; 1592 1593 rt_get_inet_prefix_pmask(rt, &dst, &mask, &scopeid); 1594 1595 rt_get_rnd(rt, &rnd); 1596 1597 /* select only first route in case of multipath */ 1598 nh = nhop_select_func(rnd.rnd_nhop, 0); 1599 1600 linux_ifname(nh->nh_ifp, ifname, sizeof(ifname)); 1601 1602 gw = (nh->nh_flags & NHF_GATEWAY) 1603 ? nh->gw4_sa.sin_addr.s_addr : 0; 1604 1605 linux_flags = RTF_UP | 1606 (nhop_get_rtflags(nh) & (RTF_GATEWAY | RTF_HOST)); 1607 1608 sbuf_printf(w->sb, 1609 "%s\t" 1610 "%08X\t%08X\t%04X\t" 1611 "%d\t%u\t%d\t" 1612 "%08X\t%d\t%u\t%u", 1613 ifname, 1614 dst.s_addr, gw, linux_flags, 1615 0, 0, rnd.rnd_weight, 1616 mask.s_addr, nh->nh_mtu, 0, 0); 1617 1618 sbuf_printf(w->sb, "\n\n"); 1619 #endif 1620 return (0); 1621 } 1622 1623 /* 1624 * Filler function for proc/net/route 1625 */ 1626 static int 1627 linprocfs_donetroute(PFS_FILL_ARGS) 1628 { 1629 struct walkarg w = { 1630 .sb = sb 1631 }; 1632 uint32_t fibnum = curthread->td_proc->p_fibnum; 1633 1634 sbuf_printf(w.sb, "%-127s\n", "Iface\tDestination\tGateway " 1635 "\tFlags\tRefCnt\tUse\tMetric\tMask\t\tMTU" 1636 "\tWindow\tIRTT"); 1637 1638 CURVNET_SET(TD_TO_VNET(curthread)); 1639 IFNET_RLOCK(); 1640 rib_walk(fibnum, AF_INET, false, linux_route_print, &w); 1641 IFNET_RUNLOCK(); 1642 CURVNET_RESTORE(); 1643 1644 return (0); 1645 } 1646 1647 /* 1648 * Filler function for proc/sys/kernel/osrelease 1649 */ 1650 static int 1651 linprocfs_doosrelease(PFS_FILL_ARGS) 1652 { 1653 char osrelease[LINUX_MAX_UTSNAME]; 1654 1655 linux_get_osrelease(td, osrelease); 1656 sbuf_printf(sb, "%s\n", osrelease); 1657 1658 return (0); 1659 } 1660 1661 /* 1662 * Filler function for proc/sys/kernel/ostype 1663 */ 1664 static int 1665 linprocfs_doostype(PFS_FILL_ARGS) 1666 { 1667 char osname[LINUX_MAX_UTSNAME]; 1668 1669 linux_get_osname(td, osname); 1670 sbuf_printf(sb, "%s\n", osname); 1671 1672 return (0); 1673 } 1674 1675 /* 1676 * Filler function for proc/sys/kernel/version 1677 */ 1678 static int 1679 linprocfs_doosbuild(PFS_FILL_ARGS) 1680 { 1681 1682 linprocfs_osbuild(td, sb); 1683 sbuf_cat(sb, "\n"); 1684 return (0); 1685 } 1686 1687 /* 1688 * Filler function for proc/sys/kernel/msgmax 1689 */ 1690 static int 1691 linprocfs_domsgmax(PFS_FILL_ARGS) 1692 { 1693 1694 sbuf_printf(sb, "%d\n", msginfo.msgmax); 1695 return (0); 1696 } 1697 1698 /* 1699 * Filler function for proc/sys/kernel/msgmni 1700 */ 1701 static int 1702 linprocfs_domsgmni(PFS_FILL_ARGS) 1703 { 1704 1705 sbuf_printf(sb, "%d\n", msginfo.msgmni); 1706 return (0); 1707 } 1708 1709 /* 1710 * Filler function for proc/sys/kernel/msgmnb 1711 */ 1712 static int 1713 linprocfs_domsgmnb(PFS_FILL_ARGS) 1714 { 1715 1716 sbuf_printf(sb, "%d\n", msginfo.msgmnb); 1717 return (0); 1718 } 1719 1720 /* 1721 * Filler function for proc/sys/kernel/ngroups_max 1722 * 1723 * Note that in Linux it defaults to 65536, not 1023. 1724 */ 1725 static int 1726 linprocfs_dongroups_max(PFS_FILL_ARGS) 1727 { 1728 1729 sbuf_printf(sb, "%d\n", ngroups_max); 1730 return (0); 1731 } 1732 1733 /* 1734 * Filler function for proc/sys/kernel/pid_max 1735 */ 1736 static int 1737 linprocfs_dopid_max(PFS_FILL_ARGS) 1738 { 1739 1740 sbuf_printf(sb, "%i\n", PID_MAX); 1741 return (0); 1742 } 1743 1744 /* 1745 * Filler function for proc/sys/kernel/sem 1746 */ 1747 static int 1748 linprocfs_dosem(PFS_FILL_ARGS) 1749 { 1750 1751 sbuf_printf(sb, "%d %d %d %d\n", seminfo.semmsl, seminfo.semmns, 1752 seminfo.semopm, seminfo.semmni); 1753 return (0); 1754 } 1755 1756 /* 1757 * Filler function for proc/sys/kernel/shmall 1758 */ 1759 static int 1760 linprocfs_doshmall(PFS_FILL_ARGS) 1761 { 1762 1763 sbuf_printf(sb, "%lu\n", shminfo.shmall); 1764 return (0); 1765 } 1766 1767 /* 1768 * Filler function for proc/sys/kernel/shmmax 1769 */ 1770 static int 1771 linprocfs_doshmmax(PFS_FILL_ARGS) 1772 { 1773 1774 sbuf_printf(sb, "%lu\n", shminfo.shmmax); 1775 return (0); 1776 } 1777 1778 /* 1779 * Filler function for proc/sys/kernel/shmmni 1780 */ 1781 static int 1782 linprocfs_doshmmni(PFS_FILL_ARGS) 1783 { 1784 1785 sbuf_printf(sb, "%lu\n", shminfo.shmmni); 1786 return (0); 1787 } 1788 1789 /* 1790 * Filler function for proc/sys/kernel/tainted 1791 */ 1792 static int 1793 linprocfs_dotainted(PFS_FILL_ARGS) 1794 { 1795 1796 sbuf_printf(sb, "0\n"); 1797 return (0); 1798 } 1799 1800 /* 1801 * Filler function for proc/sys/vm/min_free_kbytes 1802 * 1803 * This mirrors the approach in illumos to return zero for reads. Effectively, 1804 * it says, no memory is kept in reserve for "atomic allocations". This class 1805 * of allocation can be used at times when a thread cannot be suspended. 1806 */ 1807 static int 1808 linprocfs_dominfree(PFS_FILL_ARGS) 1809 { 1810 1811 sbuf_printf(sb, "%d\n", 0); 1812 return (0); 1813 } 1814 1815 /* 1816 * Filler function for proc/scsi/device_info 1817 */ 1818 static int 1819 linprocfs_doscsidevinfo(PFS_FILL_ARGS) 1820 { 1821 1822 return (0); 1823 } 1824 1825 /* 1826 * Filler function for proc/scsi/scsi 1827 */ 1828 static int 1829 linprocfs_doscsiscsi(PFS_FILL_ARGS) 1830 { 1831 1832 return (0); 1833 } 1834 1835 /* 1836 * Filler function for proc/devices 1837 */ 1838 static int 1839 linprocfs_dodevices(PFS_FILL_ARGS) 1840 { 1841 char *char_devices; 1842 sbuf_printf(sb, "Character devices:\n"); 1843 1844 char_devices = linux_get_char_devices(); 1845 sbuf_printf(sb, "%s", char_devices); 1846 linux_free_get_char_devices(char_devices); 1847 1848 sbuf_printf(sb, "\nBlock devices:\n"); 1849 1850 return (0); 1851 } 1852 1853 /* 1854 * Filler function for proc/cmdline 1855 */ 1856 static int 1857 linprocfs_docmdline(PFS_FILL_ARGS) 1858 { 1859 1860 sbuf_printf(sb, "BOOT_IMAGE=%s", kernelname); 1861 sbuf_printf(sb, " ro root=302\n"); 1862 return (0); 1863 } 1864 1865 /* 1866 * Filler function for proc/filesystems 1867 */ 1868 static int 1869 linprocfs_dofilesystems(PFS_FILL_ARGS) 1870 { 1871 struct vfsconf *vfsp; 1872 1873 vfsconf_slock(); 1874 TAILQ_FOREACH(vfsp, &vfsconf, vfc_list) { 1875 if (vfsp->vfc_flags & VFCF_SYNTHETIC) 1876 sbuf_printf(sb, "nodev"); 1877 sbuf_printf(sb, "\t%s\n", vfsp->vfc_name); 1878 } 1879 vfsconf_sunlock(); 1880 return(0); 1881 } 1882 1883 /* 1884 * Filler function for proc/modules 1885 */ 1886 static int 1887 linprocfs_domodules(PFS_FILL_ARGS) 1888 { 1889 #if 0 1890 struct linker_file *lf; 1891 1892 TAILQ_FOREACH(lf, &linker_files, link) { 1893 sbuf_printf(sb, "%-20s%8lu%4d\n", lf->filename, 1894 (unsigned long)lf->size, lf->refs); 1895 } 1896 #endif 1897 return (0); 1898 } 1899 1900 /* 1901 * Filler function for proc/pid/fd 1902 */ 1903 static int 1904 linprocfs_dofdescfs(PFS_FILL_ARGS) 1905 { 1906 1907 if (p == curproc) 1908 sbuf_printf(sb, "/dev/fd"); 1909 else 1910 sbuf_printf(sb, "unknown"); 1911 return (0); 1912 } 1913 1914 /* 1915 * Filler function for proc/pid/limits 1916 */ 1917 static const struct linux_rlimit_ident { 1918 const char *desc; 1919 const char *unit; 1920 unsigned int rlim_id; 1921 } linux_rlimits_ident[] = { 1922 { "Max cpu time", "seconds", RLIMIT_CPU }, 1923 { "Max file size", "bytes", RLIMIT_FSIZE }, 1924 { "Max data size", "bytes", RLIMIT_DATA }, 1925 { "Max stack size", "bytes", RLIMIT_STACK }, 1926 { "Max core file size", "bytes", RLIMIT_CORE }, 1927 { "Max resident set", "bytes", RLIMIT_RSS }, 1928 { "Max processes", "processes", RLIMIT_NPROC }, 1929 { "Max open files", "files", RLIMIT_NOFILE }, 1930 { "Max locked memory", "bytes", RLIMIT_MEMLOCK }, 1931 { "Max address space", "bytes", RLIMIT_AS }, 1932 { "Max file locks", "locks", LINUX_RLIMIT_LOCKS }, 1933 { "Max pending signals", "signals", LINUX_RLIMIT_SIGPENDING }, 1934 { "Max msgqueue size", "bytes", LINUX_RLIMIT_MSGQUEUE }, 1935 { "Max nice priority", "", LINUX_RLIMIT_NICE }, 1936 { "Max realtime priority", "", LINUX_RLIMIT_RTPRIO }, 1937 { "Max realtime timeout", "us", LINUX_RLIMIT_RTTIME }, 1938 { 0, 0, 0 } 1939 }; 1940 1941 static int 1942 linprocfs_doproclimits(PFS_FILL_ARGS) 1943 { 1944 const struct linux_rlimit_ident *li; 1945 struct plimit *limp; 1946 struct rlimit rl; 1947 ssize_t size; 1948 int res, error; 1949 1950 error = 0; 1951 1952 PROC_LOCK(p); 1953 limp = lim_hold(p->p_limit); 1954 PROC_UNLOCK(p); 1955 size = sizeof(res); 1956 sbuf_printf(sb, "%-26s%-21s%-21s%-21s\n", "Limit", "Soft Limit", 1957 "Hard Limit", "Units"); 1958 for (li = linux_rlimits_ident; li->desc != NULL; ++li) { 1959 switch (li->rlim_id) 1960 { 1961 case LINUX_RLIMIT_LOCKS: 1962 /* FALLTHROUGH */ 1963 case LINUX_RLIMIT_RTTIME: 1964 rl.rlim_cur = RLIM_INFINITY; 1965 break; 1966 case LINUX_RLIMIT_SIGPENDING: 1967 error = kernel_sysctlbyname(td, 1968 "kern.sigqueue.max_pending_per_proc", 1969 &res, &size, 0, 0, 0, 0); 1970 if (error != 0) 1971 goto out; 1972 rl.rlim_cur = res; 1973 rl.rlim_max = res; 1974 break; 1975 case LINUX_RLIMIT_MSGQUEUE: 1976 error = kernel_sysctlbyname(td, 1977 "kern.ipc.msgmnb", &res, &size, 0, 0, 0, 0); 1978 if (error != 0) 1979 goto out; 1980 rl.rlim_cur = res; 1981 rl.rlim_max = res; 1982 break; 1983 case LINUX_RLIMIT_NICE: 1984 /* FALLTHROUGH */ 1985 case LINUX_RLIMIT_RTPRIO: 1986 rl.rlim_cur = 0; 1987 rl.rlim_max = 0; 1988 break; 1989 default: 1990 rl = limp->pl_rlimit[li->rlim_id]; 1991 break; 1992 } 1993 if (rl.rlim_cur == RLIM_INFINITY) 1994 sbuf_printf(sb, "%-26s%-21s%-21s%-10s\n", 1995 li->desc, "unlimited", "unlimited", li->unit); 1996 else 1997 sbuf_printf(sb, "%-26s%-21llu%-21llu%-10s\n", 1998 li->desc, (unsigned long long)rl.rlim_cur, 1999 (unsigned long long)rl.rlim_max, li->unit); 2000 } 2001 out: 2002 lim_free(limp); 2003 return (error); 2004 } 2005 2006 /* 2007 * The point of the following two functions is to work around 2008 * an assertion in Chromium; see kern/240991 for details. 2009 */ 2010 static int 2011 linprocfs_dotaskattr(PFS_ATTR_ARGS) 2012 { 2013 2014 vap->va_nlink = 3; 2015 return (0); 2016 } 2017 2018 /* 2019 * Filler function for proc/<pid>/task/.dummy 2020 */ 2021 static int 2022 linprocfs_dotaskdummy(PFS_FILL_ARGS) 2023 { 2024 2025 return (0); 2026 } 2027 2028 /* 2029 * Filler function for proc/sys/kernel/random/uuid 2030 */ 2031 static int 2032 linprocfs_douuid(PFS_FILL_ARGS) 2033 { 2034 struct uuid uuid; 2035 2036 kern_uuidgen(&uuid, 1); 2037 sbuf_printf_uuid(sb, &uuid); 2038 sbuf_printf(sb, "\n"); 2039 return(0); 2040 } 2041 2042 /* 2043 * Filler function for proc/sys/kernel/random/boot_id 2044 */ 2045 static int 2046 linprocfs_doboot_id(PFS_FILL_ARGS) 2047 { 2048 static bool firstboot = 1; 2049 static struct uuid uuid; 2050 2051 if (firstboot) { 2052 kern_uuidgen(&uuid, 1); 2053 firstboot = 0; 2054 } 2055 sbuf_printf_uuid(sb, &uuid); 2056 sbuf_printf(sb, "\n"); 2057 return(0); 2058 } 2059 2060 /* 2061 * Filler function for proc/pid/auxv 2062 */ 2063 static int 2064 linprocfs_doauxv(PFS_FILL_ARGS) 2065 { 2066 struct sbuf *asb; 2067 off_t buflen, resid; 2068 int error; 2069 2070 /* 2071 * Mimic linux behavior and pass only processes with usermode 2072 * address space as valid. Return zero silently otherwise. 2073 */ 2074 if (p->p_vmspace == &vmspace0) 2075 return (0); 2076 2077 if (uio->uio_resid == 0) 2078 return (0); 2079 if (uio->uio_offset < 0 || uio->uio_resid < 0) 2080 return (EINVAL); 2081 2082 asb = sbuf_new_auto(); 2083 if (asb == NULL) 2084 return (ENOMEM); 2085 error = proc_getauxv(td, p, asb); 2086 if (error == 0) 2087 error = sbuf_finish(asb); 2088 2089 resid = sbuf_len(asb) - uio->uio_offset; 2090 if (resid > uio->uio_resid) 2091 buflen = uio->uio_resid; 2092 else 2093 buflen = resid; 2094 if (buflen > IOSIZE_MAX) 2095 return (EINVAL); 2096 if (buflen > maxphys) 2097 buflen = maxphys; 2098 if (resid <= 0) 2099 return (0); 2100 2101 if (error == 0) 2102 error = uiomove(sbuf_data(asb) + uio->uio_offset, buflen, uio); 2103 sbuf_delete(asb); 2104 return (error); 2105 } 2106 2107 /* 2108 * Filler function for proc/self/oom_score_adj 2109 */ 2110 static int 2111 linprocfs_do_oom_score_adj(PFS_FILL_ARGS) 2112 { 2113 struct linux_pemuldata *pem; 2114 long oom; 2115 2116 pem = pem_find(p); 2117 if (pem == NULL || uio == NULL) 2118 return (EOPNOTSUPP); 2119 if (uio->uio_rw == UIO_READ) { 2120 sbuf_printf(sb, "%d\n", pem->oom_score_adj); 2121 } else { 2122 sbuf_trim(sb); 2123 sbuf_finish(sb); 2124 oom = strtol(sbuf_data(sb), NULL, 10); 2125 if (oom < LINUX_OOM_SCORE_ADJ_MIN || 2126 oom > LINUX_OOM_SCORE_ADJ_MAX) 2127 return (EINVAL); 2128 pem->oom_score_adj = oom; 2129 } 2130 return (0); 2131 } 2132 2133 /* 2134 * Filler function for proc/sys/vm/max_map_count 2135 * 2136 * Maximum number of active map areas, on Linux this limits the number 2137 * of vmaps per mm struct. We don't limit mappings, return a suitable 2138 * large value. 2139 */ 2140 static int 2141 linprocfs_domax_map_cnt(PFS_FILL_ARGS) 2142 { 2143 2144 sbuf_printf(sb, "%d\n", INT32_MAX); 2145 return (0); 2146 } 2147 2148 /* 2149 * Constructor 2150 */ 2151 static int 2152 linprocfs_init(PFS_INIT_ARGS) 2153 { 2154 struct pfs_node *root; 2155 struct pfs_node *dir; 2156 struct pfs_node *sys; 2157 2158 root = pi->pi_root; 2159 2160 /* /proc/... */ 2161 pfs_create_file(root, "cmdline", &linprocfs_docmdline, 2162 NULL, NULL, NULL, PFS_RD); 2163 pfs_create_file(root, "cpuinfo", &linprocfs_docpuinfo, 2164 NULL, NULL, NULL, PFS_RD); 2165 pfs_create_file(root, "devices", &linprocfs_dodevices, 2166 NULL, NULL, NULL, PFS_RD); 2167 pfs_create_file(root, "filesystems", &linprocfs_dofilesystems, 2168 NULL, NULL, NULL, PFS_RD); 2169 pfs_create_file(root, "loadavg", &linprocfs_doloadavg, 2170 NULL, NULL, NULL, PFS_RD); 2171 pfs_create_file(root, "meminfo", &linprocfs_domeminfo, 2172 NULL, NULL, NULL, PFS_RD); 2173 pfs_create_file(root, "modules", &linprocfs_domodules, 2174 NULL, NULL, NULL, PFS_RD); 2175 pfs_create_file(root, "mounts", &linprocfs_domtab, 2176 NULL, NULL, NULL, PFS_RD); 2177 pfs_create_file(root, "mtab", &linprocfs_domtab, 2178 NULL, NULL, NULL, PFS_RD); 2179 pfs_create_file(root, "partitions", &linprocfs_dopartitions, 2180 NULL, NULL, NULL, PFS_RD); 2181 pfs_create_link(root, "self", &procfs_docurproc, 2182 NULL, NULL, NULL, 0); 2183 pfs_create_file(root, "stat", &linprocfs_dostat, 2184 NULL, NULL, NULL, PFS_RD); 2185 pfs_create_file(root, "swaps", &linprocfs_doswaps, 2186 NULL, NULL, NULL, PFS_RD); 2187 pfs_create_file(root, "uptime", &linprocfs_douptime, 2188 NULL, NULL, NULL, PFS_RD); 2189 pfs_create_file(root, "version", &linprocfs_doversion, 2190 NULL, NULL, NULL, PFS_RD); 2191 2192 /* /proc/bus/... */ 2193 dir = pfs_create_dir(root, "bus", NULL, NULL, NULL, 0); 2194 dir = pfs_create_dir(dir, "pci", NULL, NULL, NULL, 0); 2195 dir = pfs_create_dir(dir, "devices", NULL, NULL, NULL, 0); 2196 2197 /* /proc/net/... */ 2198 dir = pfs_create_dir(root, "net", NULL, NULL, NULL, 0); 2199 pfs_create_file(dir, "dev", &linprocfs_donetdev, 2200 NULL, NULL, NULL, PFS_RD); 2201 pfs_create_file(dir, "route", &linprocfs_donetroute, 2202 NULL, NULL, NULL, PFS_RD); 2203 2204 /* /proc/<pid>/... */ 2205 dir = pfs_create_dir(root, "pid", NULL, NULL, NULL, PFS_PROCDEP); 2206 pfs_create_file(dir, "cmdline", &linprocfs_doproccmdline, 2207 NULL, NULL, NULL, PFS_RD); 2208 pfs_create_link(dir, "cwd", &linprocfs_doproccwd, 2209 NULL, NULL, NULL, 0); 2210 pfs_create_file(dir, "environ", &linprocfs_doprocenviron, 2211 NULL, &procfs_candebug, NULL, PFS_RD); 2212 pfs_create_link(dir, "exe", &procfs_doprocfile, 2213 NULL, &procfs_notsystem, NULL, 0); 2214 pfs_create_file(dir, "maps", &linprocfs_doprocmaps, 2215 NULL, NULL, NULL, PFS_RD | PFS_AUTODRAIN); 2216 pfs_create_file(dir, "mem", &linprocfs_doprocmem, 2217 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR | PFS_RAW); 2218 pfs_create_file(dir, "mountinfo", &linprocfs_doprocmountinfo, 2219 NULL, NULL, NULL, PFS_RD); 2220 pfs_create_file(dir, "mounts", &linprocfs_domtab, 2221 NULL, NULL, NULL, PFS_RD); 2222 pfs_create_link(dir, "root", &linprocfs_doprocroot, 2223 NULL, NULL, NULL, 0); 2224 pfs_create_file(dir, "stat", &linprocfs_doprocstat, 2225 NULL, NULL, NULL, PFS_RD); 2226 pfs_create_file(dir, "statm", &linprocfs_doprocstatm, 2227 NULL, NULL, NULL, PFS_RD); 2228 pfs_create_file(dir, "status", &linprocfs_doprocstatus, 2229 NULL, NULL, NULL, PFS_RD); 2230 pfs_create_link(dir, "fd", &linprocfs_dofdescfs, 2231 NULL, NULL, NULL, 0); 2232 pfs_create_file(dir, "auxv", &linprocfs_doauxv, 2233 NULL, &procfs_candebug, NULL, PFS_RD|PFS_RAWRD); 2234 pfs_create_file(dir, "limits", &linprocfs_doproclimits, 2235 NULL, NULL, NULL, PFS_RD); 2236 pfs_create_file(dir, "oom_score_adj", &linprocfs_do_oom_score_adj, 2237 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR); 2238 2239 /* /proc/<pid>/task/... */ 2240 dir = pfs_create_dir(dir, "task", linprocfs_dotaskattr, NULL, NULL, 0); 2241 pfs_create_file(dir, ".dummy", &linprocfs_dotaskdummy, 2242 NULL, NULL, NULL, PFS_RD); 2243 2244 /* /proc/scsi/... */ 2245 dir = pfs_create_dir(root, "scsi", NULL, NULL, NULL, 0); 2246 pfs_create_file(dir, "device_info", &linprocfs_doscsidevinfo, 2247 NULL, NULL, NULL, PFS_RD); 2248 pfs_create_file(dir, "scsi", &linprocfs_doscsiscsi, 2249 NULL, NULL, NULL, PFS_RD); 2250 2251 /* /proc/sys/... */ 2252 sys = pfs_create_dir(root, "sys", NULL, NULL, NULL, 0); 2253 2254 /* /proc/sys/kernel/... */ 2255 dir = pfs_create_dir(sys, "kernel", NULL, NULL, NULL, 0); 2256 pfs_create_file(dir, "osrelease", &linprocfs_doosrelease, 2257 NULL, NULL, NULL, PFS_RD); 2258 pfs_create_file(dir, "ostype", &linprocfs_doostype, 2259 NULL, NULL, NULL, PFS_RD); 2260 pfs_create_file(dir, "version", &linprocfs_doosbuild, 2261 NULL, NULL, NULL, PFS_RD); 2262 pfs_create_file(dir, "msgmax", &linprocfs_domsgmax, 2263 NULL, NULL, NULL, PFS_RD); 2264 pfs_create_file(dir, "msgmni", &linprocfs_domsgmni, 2265 NULL, NULL, NULL, PFS_RD); 2266 pfs_create_file(dir, "msgmnb", &linprocfs_domsgmnb, 2267 NULL, NULL, NULL, PFS_RD); 2268 pfs_create_file(dir, "ngroups_max", &linprocfs_dongroups_max, 2269 NULL, NULL, NULL, PFS_RD); 2270 pfs_create_file(dir, "pid_max", &linprocfs_dopid_max, 2271 NULL, NULL, NULL, PFS_RD); 2272 pfs_create_file(dir, "sem", &linprocfs_dosem, 2273 NULL, NULL, NULL, PFS_RD); 2274 pfs_create_file(dir, "shmall", &linprocfs_doshmall, 2275 NULL, NULL, NULL, PFS_RD); 2276 pfs_create_file(dir, "shmmax", &linprocfs_doshmmax, 2277 NULL, NULL, NULL, PFS_RD); 2278 pfs_create_file(dir, "shmmni", &linprocfs_doshmmni, 2279 NULL, NULL, NULL, PFS_RD); 2280 pfs_create_file(dir, "tainted", &linprocfs_dotainted, 2281 NULL, NULL, NULL, PFS_RD); 2282 2283 /* /proc/sys/kernel/random/... */ 2284 dir = pfs_create_dir(dir, "random", NULL, NULL, NULL, 0); 2285 pfs_create_file(dir, "uuid", &linprocfs_douuid, 2286 NULL, NULL, NULL, PFS_RD); 2287 pfs_create_file(dir, "boot_id", &linprocfs_doboot_id, 2288 NULL, NULL, NULL, PFS_RD); 2289 2290 /* /proc/sys/vm/.... */ 2291 dir = pfs_create_dir(sys, "vm", NULL, NULL, NULL, 0); 2292 pfs_create_file(dir, "min_free_kbytes", &linprocfs_dominfree, 2293 NULL, NULL, NULL, PFS_RD); 2294 pfs_create_file(dir, "max_map_count", &linprocfs_domax_map_cnt, 2295 NULL, NULL, NULL, PFS_RD); 2296 2297 return (0); 2298 } 2299 2300 /* 2301 * Destructor 2302 */ 2303 static int 2304 linprocfs_uninit(PFS_INIT_ARGS) 2305 { 2306 2307 /* nothing to do, pseudofs will GC */ 2308 return (0); 2309 } 2310 2311 PSEUDOFS(linprocfs, 1, VFCF_JAIL); 2312 #if defined(__aarch64__) || defined(__amd64__) 2313 MODULE_DEPEND(linprocfs, linux_common, 1, 1, 1); 2314 #else 2315 MODULE_DEPEND(linprocfs, linux, 1, 1, 1); 2316 #endif 2317 MODULE_DEPEND(linprocfs, procfs, 1, 1, 1); 2318 MODULE_DEPEND(linprocfs, sysvmsg, 1, 1, 1); 2319 MODULE_DEPEND(linprocfs, sysvsem, 1, 1, 1); 2320 MODULE_DEPEND(linprocfs, sysvshm, 1, 1, 1); 2321