1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2000 Dag-Erling Smørgrav
5 * Copyright (c) 1999 Pierre Beyssac
6 * Copyright (c) 1993 Jan-Simon Pendry
7 * Copyright (c) 1993
8 * The Regents of the University of California. All rights reserved.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * Jan-Simon Pendry.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 */
41
42 #include "opt_inet.h"
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/blist.h>
47 #include <sys/conf.h>
48 #include <sys/exec.h>
49 #include <sys/fcntl.h>
50 #include <sys/filedesc.h>
51 #include <sys/jail.h>
52 #include <sys/kernel.h>
53 #include <sys/limits.h>
54 #include <sys/linker.h>
55 #include <sys/lock.h>
56 #include <sys/malloc.h>
57 #include <sys/msg.h>
58 #include <sys/mutex.h>
59 #include <sys/namei.h>
60 #include <sys/proc.h>
61 #include <sys/ptrace.h>
62 #include <sys/queue.h>
63 #include <sys/resourcevar.h>
64 #include <sys/resource.h>
65 #include <sys/sbuf.h>
66 #include <sys/sem.h>
67 #include <sys/shm.h>
68 #include <sys/smp.h>
69 #include <sys/socket.h>
70 #include <sys/syscallsubr.h>
71 #include <sys/sysctl.h>
72 #include <sys/sysent.h>
73 #include <sys/time.h>
74 #include <sys/tty.h>
75 #include <sys/user.h>
76 #include <sys/uuid.h>
77 #include <sys/vmmeter.h>
78 #include <sys/vnode.h>
79 #include <sys/bus.h>
80 #include <sys/uio.h>
81
82 #include <net/if.h>
83 #include <net/if_var.h>
84 #include <net/if_types.h>
85
86 #include <net/route.h>
87 #include <net/route/nhop.h>
88 #include <net/route/route_ctl.h>
89
90 #include <vm/vm.h>
91 #include <vm/vm_extern.h>
92 #include <vm/pmap.h>
93 #include <vm/vm_map.h>
94 #include <vm/vm_param.h>
95 #include <vm/vm_object.h>
96 #include <vm/swap_pager.h>
97
98 #include <machine/clock.h>
99
100 #include <geom/geom.h>
101 #include <geom/geom_int.h>
102
103 #if defined(__i386__) || defined(__amd64__)
104 #include <machine/cputypes.h>
105 #include <machine/md_var.h>
106 #endif /* __i386__ || __amd64__ */
107
108 #include <compat/linux/linux.h>
109 #include <compat/linux/linux_common.h>
110 #include <compat/linux/linux_emul.h>
111 #include <compat/linux/linux_mib.h>
112 #include <compat/linux/linux_misc.h>
113 #include <compat/linux/linux_util.h>
114 #include <fs/pseudofs/pseudofs.h>
115 #include <fs/procfs/procfs.h>
116
117 /*
118 * Various conversion macros
119 */
120 #define T2J(x) ((long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to jiffies */
121 #define T2CS(x) ((unsigned long)(((x) * 100ULL) / (stathz ? stathz : hz))) /* ticks to centiseconds */
122 #define T2S(x) ((x) / (stathz ? stathz : hz)) /* ticks to seconds */
123 #define B2K(x) ((x) >> 10) /* bytes to kbytes */
124 #define B2P(x) ((x) >> PAGE_SHIFT) /* bytes to pages */
125 #define P2B(x) ((x) << PAGE_SHIFT) /* pages to bytes */
126 #define P2K(x) ((x) << (PAGE_SHIFT - 10)) /* pages to kbytes */
127 #define TV2J(x) ((x)->tv_sec * 100UL + (x)->tv_usec / 10000)
128
129 /**
130 * @brief Mapping of ki_stat in struct kinfo_proc to the linux state
131 *
132 * The linux procfs state field displays one of the characters RSDZTW to
133 * denote running, sleeping in an interruptible wait, waiting in an
134 * uninterruptible disk sleep, a zombie process, process is being traced
135 * or stopped, or process is paging respectively.
136 *
137 * Our struct kinfo_proc contains the variable ki_stat which contains a
138 * value out of SIDL, SRUN, SSLEEP, SSTOP, SZOMB, SWAIT and SLOCK.
139 *
140 * This character array is used with ki_stati-1 as an index and tries to
141 * map our states to suitable linux states.
142 */
143 static char linux_state[] = "RRSTZDD";
144
145 /*
146 * Filler function for proc/meminfo
147 */
148 static int
linprocfs_domeminfo(PFS_FILL_ARGS)149 linprocfs_domeminfo(PFS_FILL_ARGS)
150 {
151 unsigned long memtotal; /* total memory in bytes */
152 unsigned long memfree; /* free memory in bytes */
153 unsigned long cached; /* page cache */
154 unsigned long buffers; /* buffer cache */
155 unsigned long long swaptotal; /* total swap space in bytes */
156 unsigned long long swapused; /* used swap space in bytes */
157 unsigned long long swapfree; /* free swap space in bytes */
158 size_t sz;
159 int error, i, j;
160
161 memtotal = physmem * PAGE_SIZE;
162 memfree = (unsigned long)vm_free_count() * PAGE_SIZE;
163 swap_pager_status(&i, &j);
164 swaptotal = (unsigned long long)i * PAGE_SIZE;
165 swapused = (unsigned long long)j * PAGE_SIZE;
166 swapfree = swaptotal - swapused;
167
168 /*
169 * This value may exclude wired pages, but we have no good way of
170 * accounting for that.
171 */
172 cached =
173 (vm_active_count() + vm_inactive_count() + vm_laundry_count()) *
174 PAGE_SIZE;
175
176 sz = sizeof(buffers);
177 error = kernel_sysctlbyname(curthread, "vfs.bufspace", &buffers, &sz,
178 NULL, 0, 0, 0);
179 if (error != 0)
180 buffers = 0;
181
182 sbuf_printf(sb,
183 "MemTotal: %9lu kB\n"
184 "MemFree: %9lu kB\n"
185 "Buffers: %9lu kB\n"
186 "Cached: %9lu kB\n"
187 "SwapTotal:%9llu kB\n"
188 "SwapFree: %9llu kB\n",
189 B2K(memtotal), B2K(memfree), B2K(buffers),
190 B2K(cached), B2K(swaptotal), B2K(swapfree));
191
192 return (0);
193 }
194
195 #if defined(__i386__) || defined(__amd64__)
196 /*
197 * Filler function for proc/cpuinfo (i386 & amd64 version)
198 */
199 static int
linprocfs_docpuinfo(PFS_FILL_ARGS)200 linprocfs_docpuinfo(PFS_FILL_ARGS)
201 {
202 uint64_t freq;
203 u_int cache_size[4];
204 u_int regs[4] = { 0 };
205 int fqmhz, fqkhz;
206 int i, j;
207
208 /*
209 * We default the flags to include all non-conflicting flags,
210 * and the Intel versions of conflicting flags.
211 */
212 static char *cpu_feature_names[] = {
213 /* 0 */ "fpu", "vme", "de", "pse",
214 /* 4 */ "tsc", "msr", "pae", "mce",
215 /* 8 */ "cx8", "apic", "", "sep",
216 /* 12 */ "mtrr", "pge", "mca", "cmov",
217 /* 16 */ "pat", "pse36", "pn", "clflush",
218 /* 20 */ "", "dts", "acpi", "mmx",
219 /* 24 */ "fxsr", "sse", "sse2", "ss",
220 /* 28 */ "ht", "tm", "ia64", "pbe"
221 };
222
223 static char *amd_feature_names[] = {
224 /* 0 */ "", "", "", "",
225 /* 4 */ "", "", "", "",
226 /* 8 */ "", "", "", "syscall",
227 /* 12 */ "", "", "", "",
228 /* 16 */ "", "", "", "mp",
229 /* 20 */ "nx", "", "mmxext", "",
230 /* 24 */ "", "fxsr_opt", "pdpe1gb", "rdtscp",
231 /* 28 */ "", "lm", "3dnowext", "3dnow"
232 };
233
234 static char *cpu_feature2_names[] = {
235 /* 0 */ "pni", "pclmulqdq", "dtes64", "monitor",
236 /* 4 */ "ds_cpl", "vmx", "smx", "est",
237 /* 8 */ "tm2", "ssse3", "cid", "sdbg",
238 /* 12 */ "fma", "cx16", "xtpr", "pdcm",
239 /* 16 */ "", "pcid", "dca", "sse4_1",
240 /* 20 */ "sse4_2", "x2apic", "movbe", "popcnt",
241 /* 24 */ "tsc_deadline_timer", "aes", "xsave", "",
242 /* 28 */ "avx", "f16c", "rdrand", "hypervisor"
243 };
244
245 static char *amd_feature2_names[] = {
246 /* 0 */ "lahf_lm", "cmp_legacy", "svm", "extapic",
247 /* 4 */ "cr8_legacy", "abm", "sse4a", "misalignsse",
248 /* 8 */ "3dnowprefetch", "osvw", "ibs", "xop",
249 /* 12 */ "skinit", "wdt", "", "lwp",
250 /* 16 */ "fma4", "tce", "", "nodeid_msr",
251 /* 20 */ "", "tbm", "topoext", "perfctr_core",
252 /* 24 */ "perfctr_nb", "", "bpext", "ptsc",
253 /* 28 */ "perfctr_llc", "mwaitx", "", ""
254 };
255
256 static char *cpu_stdext_feature_names[] = {
257 /* 0 */ "fsgsbase", "tsc_adjust", "sgx", "bmi1",
258 /* 4 */ "hle", "avx2", "", "smep",
259 /* 8 */ "bmi2", "erms", "invpcid", "rtm",
260 /* 12 */ "cqm", "", "mpx", "rdt_a",
261 /* 16 */ "avx512f", "avx512dq", "rdseed", "adx",
262 /* 20 */ "smap", "avx512ifma", "", "clflushopt",
263 /* 24 */ "clwb", "intel_pt", "avx512pf", "avx512er",
264 /* 28 */ "avx512cd", "sha_ni", "avx512bw", "avx512vl"
265 };
266
267 static char *cpu_stdext_feature2_names[] = {
268 /* 0 */ "prefetchwt1", "avx512vbmi", "umip", "pku",
269 /* 4 */ "ospke", "waitpkg", "avx512_vbmi2", "",
270 /* 8 */ "gfni", "vaes", "vpclmulqdq", "avx512_vnni",
271 /* 12 */ "avx512_bitalg", "", "avx512_vpopcntdq", "",
272 /* 16 */ "", "", "", "",
273 /* 20 */ "", "", "rdpid", "",
274 /* 24 */ "", "cldemote", "", "movdiri",
275 /* 28 */ "movdir64b", "enqcmd", "sgx_lc", ""
276 };
277
278 static char *cpu_stdext_feature3_names[] = {
279 /* 0 */ "", "", "avx512_4vnniw", "avx512_4fmaps",
280 /* 4 */ "fsrm", "", "", "",
281 /* 8 */ "avx512_vp2intersect", "", "md_clear", "",
282 /* 12 */ "", "", "", "",
283 /* 16 */ "", "", "pconfig", "",
284 /* 20 */ "", "", "", "",
285 /* 24 */ "", "", "ibrs", "stibp",
286 /* 28 */ "flush_l1d", "arch_capabilities", "core_capabilities", "ssbd"
287 };
288
289 static char *cpu_stdext_feature_l1_names[] = {
290 /* 0 */ "xsaveopt", "xsavec", "xgetbv1", "xsaves",
291 /* 4 */ "xfd"
292 };
293
294 static char *power_flags[] = {
295 "ts", "fid", "vid",
296 "ttp", "tm", "stc",
297 "100mhzsteps", "hwpstate", "",
298 "cpb", "eff_freq_ro", "proc_feedback",
299 "acc_power",
300 };
301
302 #ifdef __i386__
303 switch (cpu_vendor_id) {
304 case CPU_VENDOR_AMD:
305 if (cpu_class < CPUCLASS_686)
306 cpu_feature_names[16] = "fcmov";
307 break;
308 case CPU_VENDOR_CYRIX:
309 cpu_feature_names[24] = "cxmmx";
310 break;
311 }
312 #endif
313 if (cpu_exthigh >= 0x80000006)
314 do_cpuid(0x80000006, cache_size);
315 else
316 memset(cache_size, 0, sizeof(cache_size));
317 for (i = 0; i < mp_ncpus; ++i) {
318 fqmhz = 0;
319 fqkhz = 0;
320 freq = atomic_load_acq_64(&tsc_freq);
321 if (freq != 0) {
322 fqmhz = (freq + 4999) / 1000000;
323 fqkhz = ((freq + 4999) / 10000) % 100;
324 }
325 sbuf_printf(sb,
326 "processor\t: %d\n"
327 "vendor_id\t: %.20s\n"
328 "cpu family\t: %u\n"
329 "model\t\t: %u\n"
330 "model name\t: %s\n"
331 "stepping\t: %u\n"
332 "cpu MHz\t\t: %d.%02d\n"
333 "cache size\t: %d KB\n"
334 "physical id\t: %d\n"
335 "siblings\t: %d\n"
336 "core id\t\t: %d\n"
337 "cpu cores\t: %d\n"
338 "apicid\t\t: %d\n"
339 "initial apicid\t: %d\n"
340 "fpu\t\t: %s\n"
341 "fpu_exception\t: %s\n"
342 "cpuid level\t: %d\n"
343 "wp\t\t: %s\n",
344 i, cpu_vendor, CPUID_TO_FAMILY(cpu_id),
345 CPUID_TO_MODEL(cpu_id), cpu_model, cpu_id & CPUID_STEPPING,
346 fqmhz, fqkhz,
347 (cache_size[2] >> 16), 0, mp_ncpus, i, mp_ncpus,
348 i, i, /*cpu_id & CPUID_LOCAL_APIC_ID ??*/
349 (cpu_feature & CPUID_FPU) ? "yes" : "no", "yes",
350 CPUID_TO_FAMILY(cpu_id), "yes");
351 sbuf_cat(sb, "flags\t\t:");
352 for (j = 0; j < nitems(cpu_feature_names); j++)
353 if (cpu_feature & (1 << j) &&
354 cpu_feature_names[j][0] != '\0')
355 sbuf_printf(sb, " %s", cpu_feature_names[j]);
356 for (j = 0; j < nitems(amd_feature_names); j++)
357 if (amd_feature & (1 << j) &&
358 amd_feature_names[j][0] != '\0')
359 sbuf_printf(sb, " %s", amd_feature_names[j]);
360 for (j = 0; j < nitems(cpu_feature2_names); j++)
361 if (cpu_feature2 & (1 << j) &&
362 cpu_feature2_names[j][0] != '\0')
363 sbuf_printf(sb, " %s", cpu_feature2_names[j]);
364 for (j = 0; j < nitems(amd_feature2_names); j++)
365 if (amd_feature2 & (1 << j) &&
366 amd_feature2_names[j][0] != '\0')
367 sbuf_printf(sb, " %s", amd_feature2_names[j]);
368 for (j = 0; j < nitems(cpu_stdext_feature_names); j++)
369 if (cpu_stdext_feature & (1 << j) &&
370 cpu_stdext_feature_names[j][0] != '\0')
371 sbuf_printf(sb, " %s",
372 cpu_stdext_feature_names[j]);
373 if (tsc_is_invariant)
374 sbuf_cat(sb, " constant_tsc");
375 for (j = 0; j < nitems(cpu_stdext_feature2_names); j++)
376 if (cpu_stdext_feature2 & (1 << j) &&
377 cpu_stdext_feature2_names[j][0] != '\0')
378 sbuf_printf(sb, " %s",
379 cpu_stdext_feature2_names[j]);
380 for (j = 0; j < nitems(cpu_stdext_feature3_names); j++)
381 if (cpu_stdext_feature3 & (1 << j) &&
382 cpu_stdext_feature3_names[j][0] != '\0')
383 sbuf_printf(sb, " %s",
384 cpu_stdext_feature3_names[j]);
385 if ((cpu_feature2 & CPUID2_XSAVE) != 0) {
386 cpuid_count(0xd, 0x1, regs);
387 for (j = 0; j < nitems(cpu_stdext_feature_l1_names); j++)
388 if (regs[0] & (1 << j) &&
389 cpu_stdext_feature_l1_names[j][0] != '\0')
390 sbuf_printf(sb, " %s",
391 cpu_stdext_feature_l1_names[j]);
392 }
393 sbuf_cat(sb, "\n");
394 sbuf_printf(sb,
395 "bugs\t\t: %s\n"
396 "bogomips\t: %d.%02d\n"
397 "clflush size\t: %d\n"
398 "cache_alignment\t: %d\n"
399 "address sizes\t: %d bits physical, %d bits virtual\n",
400 #if defined(I586_CPU) && !defined(NO_F00F_HACK)
401 (has_f00f_bug) ? "Intel F00F" : "",
402 #else
403 "",
404 #endif
405 fqmhz * 2, fqkhz,
406 cpu_clflush_line_size, cpu_clflush_line_size,
407 cpu_maxphyaddr,
408 (cpu_maxphyaddr > 32) ? 48 : 0);
409 sbuf_cat(sb, "power management: ");
410 for (j = 0; j < nitems(power_flags); j++)
411 if (amd_pminfo & (1 << j))
412 sbuf_printf(sb, " %s", power_flags[j]);
413 sbuf_cat(sb, "\n\n");
414
415 /* XXX per-cpu vendor / class / model / id? */
416 }
417 sbuf_cat(sb, "\n");
418
419 return (0);
420 }
421 #else
422 /* ARM64TODO: implement non-stubbed linprocfs_docpuinfo */
423 static int
linprocfs_docpuinfo(PFS_FILL_ARGS)424 linprocfs_docpuinfo(PFS_FILL_ARGS)
425 {
426 int i;
427
428 for (i = 0; i < mp_ncpus; ++i) {
429 sbuf_printf(sb,
430 "processor\t: %d\n"
431 "BogoMIPS\t: %d.%02d\n",
432 i, 0, 0);
433 sbuf_cat(sb, "Features\t: ");
434 sbuf_cat(sb, "\n");
435 sbuf_printf(sb,
436 "CPU implementer\t: \n"
437 "CPU architecture: \n"
438 "CPU variant\t: 0x%x\n"
439 "CPU part\t: 0x%x\n"
440 "CPU revision\t: %d\n",
441 0, 0, 0);
442 sbuf_cat(sb, "\n");
443 }
444
445 return (0);
446 }
447 #endif /* __i386__ || __amd64__ */
448
449 static int
_mtab_helper(const struct pfs_node * pn,const struct statfs * sp,const char ** mntfrom,const char ** mntto,const char ** fstype)450 _mtab_helper(const struct pfs_node *pn, const struct statfs *sp,
451 const char **mntfrom, const char **mntto, const char **fstype)
452 {
453 /* determine device name */
454 *mntfrom = sp->f_mntfromname;
455
456 /* determine mount point */
457 *mntto = sp->f_mntonname;
458
459 /* determine fs type */
460 *fstype = sp->f_fstypename;
461 if (strcmp(*fstype, pn->pn_info->pi_name) == 0)
462 *mntfrom = *fstype = "proc";
463 else if (strcmp(*fstype, "procfs") == 0)
464 return (ECANCELED);
465
466 if (strcmp(*fstype, "autofs") == 0) {
467 /*
468 * FreeBSD uses eg "map -hosts", whereas Linux
469 * expects just "-hosts".
470 */
471 if (strncmp(*mntfrom, "map ", 4) == 0)
472 *mntfrom += 4;
473 }
474
475 if (strcmp(*fstype, "linsysfs") == 0) {
476 *mntfrom = *fstype = "sysfs";
477 } else {
478 /* For Linux msdosfs is called vfat */
479 if (strcmp(*fstype, "msdosfs") == 0)
480 *fstype = "vfat";
481 }
482 return (0);
483 }
484
485 static void
_sbuf_mntoptions_helper(struct sbuf * sb,uint64_t f_flags)486 _sbuf_mntoptions_helper(struct sbuf *sb, uint64_t f_flags)
487 {
488 sbuf_cat(sb, (f_flags & MNT_RDONLY) ? "ro" : "rw");
489 #define ADD_OPTION(opt, name) \
490 if (f_flags & (opt)) sbuf_cat(sb, "," name);
491 ADD_OPTION(MNT_SYNCHRONOUS, "sync");
492 ADD_OPTION(MNT_NOEXEC, "noexec");
493 ADD_OPTION(MNT_NOSUID, "nosuid");
494 ADD_OPTION(MNT_UNION, "union");
495 ADD_OPTION(MNT_ASYNC, "async");
496 ADD_OPTION(MNT_SUIDDIR, "suiddir");
497 ADD_OPTION(MNT_NOSYMFOLLOW, "nosymfollow");
498 ADD_OPTION(MNT_NOATIME, "noatime");
499 #undef ADD_OPTION
500 }
501
502 /*
503 * Filler function for proc/mtab and proc/<pid>/mounts.
504 *
505 * /proc/mtab doesn't exist in Linux' procfs, but is included here so
506 * users can symlink /compat/linux/etc/mtab to /proc/mtab
507 */
508 static int
linprocfs_domtab(PFS_FILL_ARGS)509 linprocfs_domtab(PFS_FILL_ARGS)
510 {
511 const char *mntto, *mntfrom, *fstype;
512 char *dlep, *flep;
513 struct vnode *vp;
514 struct pwd *pwd;
515 size_t lep_len;
516 int error;
517 struct statfs *buf, *sp;
518 size_t count;
519
520 /*
521 * Resolve emulation tree prefix
522 */
523 flep = NULL;
524 pwd = pwd_hold(td);
525 vp = pwd->pwd_adir;
526 error = vn_fullpath_global(vp, &dlep, &flep);
527 pwd_drop(pwd);
528 if (error != 0)
529 return (error);
530 lep_len = strlen(dlep);
531
532 buf = NULL;
533 error = kern_getfsstat(td, &buf, SIZE_T_MAX, &count,
534 UIO_SYSSPACE, MNT_WAIT);
535 if (error != 0) {
536 goto out;
537 }
538
539 for (sp = buf; count > 0; sp++, count--) {
540 error = _mtab_helper(pn, sp, &mntfrom, &mntto, &fstype);
541 if (error != 0) {
542 MPASS(error == ECANCELED);
543 continue;
544 }
545
546 /* determine mount point */
547 if (strncmp(mntto, dlep, lep_len) == 0 && mntto[lep_len] == '/')
548 mntto += lep_len;
549
550 sbuf_printf(sb, "%s %s %s ", mntfrom, mntto, fstype);
551 _sbuf_mntoptions_helper(sb, sp->f_flags);
552 /* a real Linux mtab will also show NFS options */
553 sbuf_printf(sb, " 0 0\n");
554 }
555
556 error = 0;
557 out:
558 free(buf, M_TEMP);
559 free(flep, M_TEMP);
560 return (error);
561 }
562
563 static int
linprocfs_doprocmountinfo(PFS_FILL_ARGS)564 linprocfs_doprocmountinfo(PFS_FILL_ARGS)
565 {
566 const char *mntfrom, *mntto, *fstype;
567 char *dlep, *flep;
568 struct statfs *buf, *sp;
569 size_t count, lep_len;
570 struct vnode *vp;
571 struct pwd *pwd;
572 int error;
573
574 /*
575 * Resolve emulation tree prefix
576 */
577 flep = NULL;
578 pwd = pwd_hold(td);
579 vp = pwd->pwd_adir;
580 error = vn_fullpath_global(vp, &dlep, &flep);
581 pwd_drop(pwd);
582 if (error != 0)
583 return (error);
584 lep_len = strlen(dlep);
585
586 buf = NULL;
587 error = kern_getfsstat(td, &buf, SIZE_T_MAX, &count,
588 UIO_SYSSPACE, MNT_WAIT);
589 if (error != 0)
590 goto out;
591
592 for (sp = buf; count > 0; sp++, count--) {
593 error = _mtab_helper(pn, sp, &mntfrom, &mntto, &fstype);
594 if (error != 0) {
595 MPASS(error == ECANCELED);
596 continue;
597 }
598
599 if (strncmp(mntto, dlep, lep_len) == 0 && mntto[lep_len] == '/')
600 mntto += lep_len;
601 #if 0
602 /*
603 * If the prefix is a chroot, and this mountpoint is not under
604 * the prefix, we should skip it. Leave it for now for
605 * consistency with procmtab above.
606 */
607 else
608 continue;
609 #endif
610
611 /*
612 * (1) mount id
613 *
614 * (2) parent mount id -- we don't have this cheaply, so
615 * provide a dummy value
616 *
617 * (3) major:minor -- ditto
618 *
619 * (4) root filesystem mount -- probably a namespaces thing
620 *
621 * (5) mountto path
622 */
623 sbuf_printf(sb, "%u 0 0:0 / %s ",
624 sp->f_fsid.val[0] ^ sp->f_fsid.val[1], mntto);
625 /* (6) mount options */
626 _sbuf_mntoptions_helper(sb, sp->f_flags);
627 /*
628 * (7) zero or more optional fields -- again, namespace related
629 *
630 * (8) End of variable length fields separator ("-")
631 *
632 * (9) fstype
633 *
634 * (10) mount from
635 *
636 * (11) "superblock" options -- like (6), but different
637 * semantics in Linux
638 */
639 sbuf_printf(sb, " - %s %s %s\n", fstype, mntfrom,
640 (sp->f_flags & MNT_RDONLY) ? "ro" : "rw");
641 }
642
643 error = 0;
644 out:
645 free(buf, M_TEMP);
646 free(flep, M_TEMP);
647 return (error);
648 }
649
650 /*
651 * Filler function for proc/partitions
652 */
653 static int
linprocfs_dopartitions(PFS_FILL_ARGS)654 linprocfs_dopartitions(PFS_FILL_ARGS)
655 {
656 struct g_class *cp;
657 struct g_geom *gp;
658 struct g_provider *pp;
659 int major, minor;
660
661 g_topology_lock();
662 sbuf_printf(sb, "major minor #blocks name\n\n");
663
664 LIST_FOREACH(cp, &g_classes, class) {
665 if (strcmp(cp->name, "DISK") == 0 ||
666 strcmp(cp->name, "PART") == 0)
667 LIST_FOREACH(gp, &cp->geom, geom) {
668 LIST_FOREACH(pp, &gp->provider, provider) {
669 if (linux_driver_get_major_minor(
670 pp->name, &major, &minor) != 0) {
671 major = 0;
672 minor = 0;
673 }
674 sbuf_printf(sb, "%4d %7d %10lld %s\n",
675 major, minor,
676 B2K((long long)pp->mediasize),
677 pp->name);
678 }
679 }
680 }
681 g_topology_unlock();
682
683 return (0);
684 }
685
686 /*
687 * Filler function for proc/stat
688 *
689 * Output depends on kernel version:
690 *
691 * v2.5.40 <=
692 * user nice system idle
693 * v2.5.41
694 * user nice system idle iowait
695 * v2.6.11
696 * user nice system idle iowait irq softirq steal
697 * v2.6.24
698 * user nice system idle iowait irq softirq steal guest
699 * v2.6.33 >=
700 * user nice system idle iowait irq softirq steal guest guest_nice
701 */
702 static int
linprocfs_dostat(PFS_FILL_ARGS)703 linprocfs_dostat(PFS_FILL_ARGS)
704 {
705 struct pcpu *pcpu;
706 long cp_time[CPUSTATES];
707 long *cp;
708 struct timeval boottime;
709 int i;
710 char *zero_pad;
711 bool has_intr = true;
712
713 if (linux_kernver(td) >= LINUX_KERNVER(2,6,33)) {
714 zero_pad = " 0 0 0 0\n";
715 } else if (linux_kernver(td) >= LINUX_KERNVER(2,6,24)) {
716 zero_pad = " 0 0 0\n";
717 } else if (linux_kernver(td) >= LINUX_KERNVER(2,6,11)) {
718 zero_pad = " 0 0\n";
719 } else if (linux_kernver(td) >= LINUX_KERNVER(2,5,41)) {
720 has_intr = false;
721 zero_pad = " 0\n";
722 } else {
723 has_intr = false;
724 zero_pad = "\n";
725 }
726
727 read_cpu_time(cp_time);
728 getboottime(&boottime);
729 /* Parameters common to all versions */
730 sbuf_printf(sb, "cpu %lu %lu %lu %lu",
731 T2J(cp_time[CP_USER]),
732 T2J(cp_time[CP_NICE]),
733 T2J(cp_time[CP_SYS]),
734 T2J(cp_time[CP_IDLE]));
735
736 /* Print interrupt stats if available */
737 if (has_intr) {
738 sbuf_printf(sb, " 0 %lu", T2J(cp_time[CP_INTR]));
739 }
740
741 /* Pad out remaining fields depending on version */
742 sbuf_printf(sb, "%s", zero_pad);
743
744 CPU_FOREACH(i) {
745 pcpu = pcpu_find(i);
746 cp = pcpu->pc_cp_time;
747 sbuf_printf(sb, "cpu%d %lu %lu %lu %lu", i,
748 T2J(cp[CP_USER]),
749 T2J(cp[CP_NICE]),
750 T2J(cp[CP_SYS]),
751 T2J(cp[CP_IDLE]));
752
753 if (has_intr) {
754 sbuf_printf(sb, " 0 %lu", T2J(cp[CP_INTR]));
755 }
756
757 sbuf_printf(sb, "%s", zero_pad);
758 }
759 sbuf_printf(sb,
760 "disk 0 0 0 0\n"
761 "page %ju %ju\n"
762 "swap %ju %ju\n"
763 "intr %ju\n"
764 "ctxt %ju\n"
765 "btime %lld\n",
766 (uintmax_t)VM_CNT_FETCH(v_vnodepgsin),
767 (uintmax_t)VM_CNT_FETCH(v_vnodepgsout),
768 (uintmax_t)VM_CNT_FETCH(v_swappgsin),
769 (uintmax_t)VM_CNT_FETCH(v_swappgsout),
770 (uintmax_t)VM_CNT_FETCH(v_intr),
771 (uintmax_t)VM_CNT_FETCH(v_swtch),
772 (long long)boottime.tv_sec);
773 return (0);
774 }
775
776 static int
linprocfs_doswaps(PFS_FILL_ARGS)777 linprocfs_doswaps(PFS_FILL_ARGS)
778 {
779 struct xswdev xsw;
780 uintmax_t total, used;
781 int n;
782 char devname[SPECNAMELEN + 1];
783
784 sbuf_printf(sb, "Filename\t\t\t\tType\t\tSize\tUsed\tPriority\n");
785 for (n = 0; ; n++) {
786 if (swap_dev_info(n, &xsw, devname, sizeof(devname)) != 0)
787 break;
788 total = (uintmax_t)xsw.xsw_nblks * PAGE_SIZE / 1024;
789 used = (uintmax_t)xsw.xsw_used * PAGE_SIZE / 1024;
790
791 /*
792 * The space and not tab after the device name is on
793 * purpose. Linux does so.
794 */
795 sbuf_printf(sb, "/dev/%-34s unknown\t\t%jd\t%jd\t-1\n",
796 devname, total, used);
797 }
798 return (0);
799 }
800
801 /*
802 * Filler function for proc/uptime
803 */
804 static int
linprocfs_douptime(PFS_FILL_ARGS)805 linprocfs_douptime(PFS_FILL_ARGS)
806 {
807 long cp_time[CPUSTATES];
808 struct timeval tv;
809
810 getmicrouptime(&tv);
811 read_cpu_time(cp_time);
812 sbuf_printf(sb, "%lld.%02ld %ld.%02lu\n",
813 (long long)tv.tv_sec, tv.tv_usec / 10000,
814 T2S(cp_time[CP_IDLE] / mp_ncpus),
815 T2CS(cp_time[CP_IDLE] / mp_ncpus) % 100);
816 return (0);
817 }
818
819 /*
820 * Get OS build date
821 */
822 static void
linprocfs_osbuild(struct thread * td,struct sbuf * sb)823 linprocfs_osbuild(struct thread *td, struct sbuf *sb)
824 {
825 #if 0
826 char osbuild[256];
827 char *cp1, *cp2;
828
829 strncpy(osbuild, version, 256);
830 osbuild[255] = '\0';
831 cp1 = strstr(osbuild, "\n");
832 cp2 = strstr(osbuild, ":");
833 if (cp1 && cp2) {
834 *cp1 = *cp2 = '\0';
835 cp1 = strstr(osbuild, "#");
836 } else
837 cp1 = NULL;
838 if (cp1)
839 sbuf_printf(sb, "%s%s", cp1, cp2 + 1);
840 else
841 #endif
842 sbuf_cat(sb, "#4 Sun Dec 18 04:30:00 CET 1977");
843 }
844
845 /*
846 * Get OS builder
847 */
848 static void
linprocfs_osbuilder(struct thread * td,struct sbuf * sb)849 linprocfs_osbuilder(struct thread *td, struct sbuf *sb)
850 {
851 #if 0
852 char builder[256];
853 char *cp;
854
855 cp = strstr(version, "\n ");
856 if (cp) {
857 strncpy(builder, cp + 5, 256);
858 builder[255] = '\0';
859 cp = strstr(builder, ":");
860 if (cp)
861 *cp = '\0';
862 }
863 if (cp)
864 sbuf_cat(sb, builder);
865 else
866 #endif
867 sbuf_cat(sb, "des@freebsd.org");
868 }
869
870 /*
871 * Filler function for proc/version
872 */
873 static int
linprocfs_doversion(PFS_FILL_ARGS)874 linprocfs_doversion(PFS_FILL_ARGS)
875 {
876 char osname[LINUX_MAX_UTSNAME];
877 char osrelease[LINUX_MAX_UTSNAME];
878
879 linux_get_osname(td, osname);
880 linux_get_osrelease(td, osrelease);
881 sbuf_printf(sb, "%s version %s (", osname, osrelease);
882 linprocfs_osbuilder(td, sb);
883 sbuf_cat(sb, ") (gcc version " __VERSION__ ") ");
884 linprocfs_osbuild(td, sb);
885 sbuf_cat(sb, "\n");
886
887 return (0);
888 }
889
890 /*
891 * Filler function for proc/loadavg
892 */
893 static int
linprocfs_doloadavg(PFS_FILL_ARGS)894 linprocfs_doloadavg(PFS_FILL_ARGS)
895 {
896
897 sbuf_printf(sb,
898 "%d.%02d %d.%02d %d.%02d %d/%d %d\n",
899 (int)(averunnable.ldavg[0] / averunnable.fscale),
900 (int)(averunnable.ldavg[0] * 100 / averunnable.fscale % 100),
901 (int)(averunnable.ldavg[1] / averunnable.fscale),
902 (int)(averunnable.ldavg[1] * 100 / averunnable.fscale % 100),
903 (int)(averunnable.ldavg[2] / averunnable.fscale),
904 (int)(averunnable.ldavg[2] * 100 / averunnable.fscale % 100),
905 1, /* number of running tasks */
906 nprocs, /* number of tasks */
907 lastpid /* the last pid */
908 );
909 return (0);
910 }
911
912 static int
linprocfs_get_tty_nr(struct proc * p)913 linprocfs_get_tty_nr(struct proc *p)
914 {
915 struct session *sp;
916 const char *ttyname;
917 int error, major, minor, nr;
918
919 PROC_LOCK_ASSERT(p, MA_OWNED);
920 sx_assert(&proctree_lock, SX_LOCKED);
921
922 if ((p->p_flag & P_CONTROLT) == 0)
923 return (-1);
924
925 sp = p->p_pgrp->pg_session;
926 if (sp == NULL)
927 return (-1);
928
929 ttyname = devtoname(sp->s_ttyp->t_dev);
930 error = linux_driver_get_major_minor(ttyname, &major, &minor);
931 if (error != 0)
932 return (-1);
933
934 nr = makedev(major, minor);
935 return (nr);
936 }
937
938 /*
939 * Filler function for proc/pid/stat
940 */
941 static int
linprocfs_doprocstat(PFS_FILL_ARGS)942 linprocfs_doprocstat(PFS_FILL_ARGS)
943 {
944 struct kinfo_proc kp;
945 struct timeval boottime;
946 char state;
947 static int ratelimit = 0;
948 int tty_nr;
949 vm_offset_t startcode, startdata;
950
951 getboottime(&boottime);
952 sx_slock(&proctree_lock);
953 PROC_LOCK(p);
954 fill_kinfo_proc(p, &kp);
955 tty_nr = linprocfs_get_tty_nr(p);
956 sx_sunlock(&proctree_lock);
957 if (p->p_vmspace) {
958 startcode = (vm_offset_t)p->p_vmspace->vm_taddr;
959 startdata = (vm_offset_t)p->p_vmspace->vm_daddr;
960 } else {
961 startcode = 0;
962 startdata = 0;
963 }
964 sbuf_printf(sb, "%d", p->p_pid);
965 #define PS_ADD(name, fmt, arg) sbuf_printf(sb, " " fmt, arg)
966 PS_ADD("comm", "(%s)", p->p_comm);
967 if (kp.ki_stat > sizeof(linux_state)) {
968 state = 'R';
969
970 if (ratelimit == 0) {
971 printf("linprocfs: don't know how to handle unknown FreeBSD state %d/%zd, mapping to R\n",
972 kp.ki_stat, sizeof(linux_state));
973 ++ratelimit;
974 }
975 } else
976 state = linux_state[kp.ki_stat - 1];
977 PS_ADD("state", "%c", state);
978 PS_ADD("ppid", "%d", p->p_pptr ? p->p_pptr->p_pid : 0);
979 PS_ADD("pgrp", "%d", p->p_pgid);
980 PS_ADD("session", "%d", p->p_session->s_sid);
981 PROC_UNLOCK(p);
982 PS_ADD("tty", "%d", tty_nr);
983 PS_ADD("tpgid", "%d", kp.ki_tpgid);
984 PS_ADD("flags", "%u", 0); /* XXX */
985 PS_ADD("minflt", "%lu", kp.ki_rusage.ru_minflt);
986 PS_ADD("cminflt", "%lu", kp.ki_rusage_ch.ru_minflt);
987 PS_ADD("majflt", "%lu", kp.ki_rusage.ru_majflt);
988 PS_ADD("cmajflt", "%lu", kp.ki_rusage_ch.ru_majflt);
989 PS_ADD("utime", "%ld", TV2J(&kp.ki_rusage.ru_utime));
990 PS_ADD("stime", "%ld", TV2J(&kp.ki_rusage.ru_stime));
991 PS_ADD("cutime", "%ld", TV2J(&kp.ki_rusage_ch.ru_utime));
992 PS_ADD("cstime", "%ld", TV2J(&kp.ki_rusage_ch.ru_stime));
993 PS_ADD("priority", "%d", kp.ki_pri.pri_user);
994 PS_ADD("nice", "%d", kp.ki_nice); /* 19 (nicest) to -19 */
995 PS_ADD("0", "%d", 0); /* removed field */
996 PS_ADD("itrealvalue", "%d", 0); /* XXX */
997 PS_ADD("starttime", "%lu", TV2J(&kp.ki_start) - TV2J(&boottime));
998 PS_ADD("vsize", "%ju", (uintmax_t)kp.ki_size);
999 PS_ADD("rss", "%ju", (uintmax_t)kp.ki_rssize);
1000 PS_ADD("rlim", "%lu", kp.ki_rusage.ru_maxrss);
1001 PS_ADD("startcode", "%ju", (uintmax_t)startcode);
1002 PS_ADD("endcode", "%ju", (uintmax_t)startdata);
1003 PS_ADD("startstack", "%u", 0); /* XXX */
1004 PS_ADD("kstkesp", "%u", 0); /* XXX */
1005 PS_ADD("kstkeip", "%u", 0); /* XXX */
1006 PS_ADD("signal", "%u", 0); /* XXX */
1007 PS_ADD("blocked", "%u", 0); /* XXX */
1008 PS_ADD("sigignore", "%u", 0); /* XXX */
1009 PS_ADD("sigcatch", "%u", 0); /* XXX */
1010 PS_ADD("wchan", "%u", 0); /* XXX */
1011 PS_ADD("nswap", "%lu", kp.ki_rusage.ru_nswap);
1012 PS_ADD("cnswap", "%lu", kp.ki_rusage_ch.ru_nswap);
1013 PS_ADD("exitsignal", "%d", 0); /* XXX */
1014 PS_ADD("processor", "%u", kp.ki_lastcpu);
1015 PS_ADD("rt_priority", "%u", 0); /* XXX */ /* >= 2.5.19 */
1016 PS_ADD("policy", "%u", kp.ki_pri.pri_class); /* >= 2.5.19 */
1017 #undef PS_ADD
1018 sbuf_putc(sb, '\n');
1019
1020 return (0);
1021 }
1022
1023 /*
1024 * Filler function for proc/pid/statm
1025 */
1026 static int
linprocfs_doprocstatm(PFS_FILL_ARGS)1027 linprocfs_doprocstatm(PFS_FILL_ARGS)
1028 {
1029 struct kinfo_proc kp;
1030 segsz_t lsize;
1031
1032 sx_slock(&proctree_lock);
1033 PROC_LOCK(p);
1034 fill_kinfo_proc(p, &kp);
1035 PROC_UNLOCK(p);
1036 sx_sunlock(&proctree_lock);
1037
1038 /*
1039 * See comments in linprocfs_doprocstatus() regarding the
1040 * computation of lsize.
1041 */
1042 /* size resident share trs drs lrs dt */
1043 sbuf_printf(sb, "%ju ", B2P((uintmax_t)kp.ki_size));
1044 sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_rssize);
1045 sbuf_printf(sb, "%ju ", (uintmax_t)0); /* XXX */
1046 sbuf_printf(sb, "%ju ", (uintmax_t)kp.ki_tsize);
1047 sbuf_printf(sb, "%ju ", (uintmax_t)(kp.ki_dsize + kp.ki_ssize));
1048 lsize = B2P(kp.ki_size) - kp.ki_dsize -
1049 kp.ki_ssize - kp.ki_tsize - 1;
1050 sbuf_printf(sb, "%ju ", (uintmax_t)lsize);
1051 sbuf_printf(sb, "%ju\n", (uintmax_t)0); /* XXX */
1052
1053 return (0);
1054 }
1055
1056 /*
1057 * Filler function for proc/pid/status
1058 */
1059 static int
linprocfs_doprocstatus(PFS_FILL_ARGS)1060 linprocfs_doprocstatus(PFS_FILL_ARGS)
1061 {
1062 struct kinfo_proc kp;
1063 char *state;
1064 segsz_t lsize;
1065 struct thread *td2;
1066 struct sigacts *ps;
1067 l_sigset_t siglist, sigignore, sigcatch;
1068 int i;
1069
1070 sx_slock(&proctree_lock);
1071 PROC_LOCK(p);
1072 td2 = FIRST_THREAD_IN_PROC(p);
1073
1074 if (P_SHOULDSTOP(p)) {
1075 state = "T (stopped)";
1076 } else {
1077 switch(p->p_state) {
1078 case PRS_NEW:
1079 state = "I (idle)";
1080 break;
1081 case PRS_NORMAL:
1082 if (p->p_flag & P_WEXIT) {
1083 state = "X (exiting)";
1084 break;
1085 }
1086 switch(TD_GET_STATE(td2)) {
1087 case TDS_INHIBITED:
1088 state = "S (sleeping)";
1089 break;
1090 case TDS_RUNQ:
1091 case TDS_RUNNING:
1092 state = "R (running)";
1093 break;
1094 default:
1095 state = "? (unknown)";
1096 break;
1097 }
1098 break;
1099 case PRS_ZOMBIE:
1100 state = "Z (zombie)";
1101 break;
1102 default:
1103 state = "? (unknown)";
1104 break;
1105 }
1106 }
1107
1108 fill_kinfo_proc(p, &kp);
1109 sx_sunlock(&proctree_lock);
1110
1111 sbuf_printf(sb, "Name:\t%s\n", p->p_comm); /* XXX escape */
1112 sbuf_printf(sb, "State:\t%s\n", state);
1113
1114 /*
1115 * Credentials
1116 */
1117 sbuf_printf(sb, "Tgid:\t%d\n", p->p_pid);
1118 sbuf_printf(sb, "Pid:\t%d\n", p->p_pid);
1119 sbuf_printf(sb, "PPid:\t%d\n", kp.ki_ppid );
1120 sbuf_printf(sb, "TracerPid:\t%d\n", kp.ki_tracer );
1121 sbuf_printf(sb, "Uid:\t%d\t%d\t%d\t%d\n", p->p_ucred->cr_ruid,
1122 p->p_ucred->cr_uid,
1123 p->p_ucred->cr_svuid,
1124 /* FreeBSD doesn't have fsuid */
1125 p->p_ucred->cr_uid);
1126 sbuf_printf(sb, "Gid:\t%d\t%d\t%d\t%d\n", p->p_ucred->cr_rgid,
1127 p->p_ucred->cr_gid,
1128 p->p_ucred->cr_svgid,
1129 /* FreeBSD doesn't have fsgid */
1130 p->p_ucred->cr_gid);
1131 sbuf_cat(sb, "Groups:\t");
1132 for (i = 0; i < p->p_ucred->cr_ngroups; i++)
1133 sbuf_printf(sb, "%d ", p->p_ucred->cr_groups[i]);
1134 PROC_UNLOCK(p);
1135 sbuf_putc(sb, '\n');
1136
1137 /*
1138 * Memory
1139 *
1140 * While our approximation of VmLib may not be accurate (I
1141 * don't know of a simple way to verify it, and I'm not sure
1142 * it has much meaning anyway), I believe it's good enough.
1143 *
1144 * The same code that could (I think) accurately compute VmLib
1145 * could also compute VmLck, but I don't really care enough to
1146 * implement it. Submissions are welcome.
1147 */
1148 sbuf_printf(sb, "VmSize:\t%8ju kB\n", B2K((uintmax_t)kp.ki_size));
1149 sbuf_printf(sb, "VmLck:\t%8u kB\n", P2K(0)); /* XXX */
1150 sbuf_printf(sb, "VmRSS:\t%8ju kB\n", P2K((uintmax_t)kp.ki_rssize));
1151 sbuf_printf(sb, "VmData:\t%8ju kB\n", P2K((uintmax_t)kp.ki_dsize));
1152 sbuf_printf(sb, "VmStk:\t%8ju kB\n", P2K((uintmax_t)kp.ki_ssize));
1153 sbuf_printf(sb, "VmExe:\t%8ju kB\n", P2K((uintmax_t)kp.ki_tsize));
1154 lsize = B2P(kp.ki_size) - kp.ki_dsize -
1155 kp.ki_ssize - kp.ki_tsize - 1;
1156 sbuf_printf(sb, "VmLib:\t%8ju kB\n", P2K((uintmax_t)lsize));
1157
1158 /*
1159 * Signal masks
1160 */
1161 PROC_LOCK(p);
1162 bsd_to_linux_sigset(&p->p_siglist, &siglist);
1163 ps = p->p_sigacts;
1164 mtx_lock(&ps->ps_mtx);
1165 bsd_to_linux_sigset(&ps->ps_sigignore, &sigignore);
1166 bsd_to_linux_sigset(&ps->ps_sigcatch, &sigcatch);
1167 mtx_unlock(&ps->ps_mtx);
1168 PROC_UNLOCK(p);
1169
1170 sbuf_printf(sb, "SigPnd:\t%016jx\n", siglist.__mask);
1171 /*
1172 * XXX. SigBlk - target thread's signal mask, td_sigmask.
1173 * To implement SigBlk pseudofs should support proc/tid dir entries.
1174 */
1175 sbuf_printf(sb, "SigBlk:\t%016x\n", 0);
1176 sbuf_printf(sb, "SigIgn:\t%016jx\n", sigignore.__mask);
1177 sbuf_printf(sb, "SigCgt:\t%016jx\n", sigcatch.__mask);
1178
1179 /*
1180 * Linux also prints the capability masks, but we don't have
1181 * capabilities yet, and when we do get them they're likely to
1182 * be meaningless to Linux programs, so we lie. XXX
1183 */
1184 sbuf_printf(sb, "CapInh:\t%016x\n", 0);
1185 sbuf_printf(sb, "CapPrm:\t%016x\n", 0);
1186 sbuf_printf(sb, "CapEff:\t%016x\n", 0);
1187
1188 return (0);
1189 }
1190
1191 /*
1192 * Filler function for proc/pid/cwd
1193 */
1194 static int
linprocfs_doproccwd(PFS_FILL_ARGS)1195 linprocfs_doproccwd(PFS_FILL_ARGS)
1196 {
1197 struct pwd *pwd;
1198 char *fullpath = "unknown";
1199 char *freepath = NULL;
1200
1201 pwd = pwd_hold_proc(p);
1202 vn_fullpath(pwd->pwd_cdir, &fullpath, &freepath);
1203 sbuf_printf(sb, "%s", fullpath);
1204 if (freepath)
1205 free(freepath, M_TEMP);
1206 pwd_drop(pwd);
1207 return (0);
1208 }
1209
1210 /*
1211 * Filler function for proc/pid/root
1212 */
1213 static int
linprocfs_doprocroot(PFS_FILL_ARGS)1214 linprocfs_doprocroot(PFS_FILL_ARGS)
1215 {
1216 struct pwd *pwd;
1217 struct vnode *vp;
1218 char *fullpath = "unknown";
1219 char *freepath = NULL;
1220
1221 pwd = pwd_hold_proc(p);
1222 vp = jailed(p->p_ucred) ? pwd->pwd_jdir : pwd->pwd_rdir;
1223 vn_fullpath(vp, &fullpath, &freepath);
1224 sbuf_printf(sb, "%s", fullpath);
1225 if (freepath)
1226 free(freepath, M_TEMP);
1227 pwd_drop(pwd);
1228 return (0);
1229 }
1230
1231 /*
1232 * Filler function for proc/pid/cmdline
1233 */
1234 static int
linprocfs_doproccmdline(PFS_FILL_ARGS)1235 linprocfs_doproccmdline(PFS_FILL_ARGS)
1236 {
1237 int ret;
1238
1239 PROC_LOCK(p);
1240 if ((ret = p_cansee(td, p)) != 0) {
1241 PROC_UNLOCK(p);
1242 return (ret);
1243 }
1244
1245 /*
1246 * Mimic linux behavior and pass only processes with usermode
1247 * address space as valid. Return zero silently otherwize.
1248 */
1249 if (p->p_vmspace == &vmspace0) {
1250 PROC_UNLOCK(p);
1251 return (0);
1252 }
1253 if (p->p_args != NULL) {
1254 sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length);
1255 PROC_UNLOCK(p);
1256 return (0);
1257 }
1258
1259 if ((p->p_flag & P_SYSTEM) != 0) {
1260 PROC_UNLOCK(p);
1261 return (0);
1262 }
1263
1264 PROC_UNLOCK(p);
1265
1266 ret = proc_getargv(td, p, sb);
1267 return (ret);
1268 }
1269
1270 /*
1271 * Filler function for proc/pid/environ
1272 */
1273 static int
linprocfs_doprocenviron(PFS_FILL_ARGS)1274 linprocfs_doprocenviron(PFS_FILL_ARGS)
1275 {
1276
1277 /*
1278 * Mimic linux behavior and pass only processes with usermode
1279 * address space as valid. Return zero silently otherwize.
1280 */
1281 if (p->p_vmspace == &vmspace0)
1282 return (0);
1283
1284 return (proc_getenvv(td, p, sb));
1285 }
1286
1287 static char l32_map_str[] = "%08lx-%08lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n";
1288 static char l64_map_str[] = "%016lx-%016lx %s%s%s%s %08lx %02x:%02x %lu%s%s\n";
1289 static char vdso_str[] = " [vdso]";
1290 static char stack_str[] = " [stack]";
1291
1292 /*
1293 * Filler function for proc/pid/maps
1294 */
1295 static int
linprocfs_doprocmaps(PFS_FILL_ARGS)1296 linprocfs_doprocmaps(PFS_FILL_ARGS)
1297 {
1298 struct vmspace *vm;
1299 vm_map_t map;
1300 vm_map_entry_t entry, tmp_entry;
1301 vm_object_t obj, tobj, lobj;
1302 vm_offset_t e_start, e_end;
1303 vm_ooffset_t off;
1304 vm_prot_t e_prot;
1305 unsigned int last_timestamp;
1306 char *name = "", *freename = NULL;
1307 const char *l_map_str;
1308 ino_t ino;
1309 int error;
1310 struct vnode *vp;
1311 struct vattr vat;
1312 bool private;
1313
1314 if (uio->uio_rw != UIO_READ)
1315 return (EOPNOTSUPP);
1316
1317 error = proc_vmspace_ref(td, p, PRVM_BLOCK_EXEC | PRVM_CHECK_DEBUG,
1318 &vm);
1319 if (error != 0)
1320 return (error);
1321
1322 if (SV_CURPROC_FLAG(SV_LP64))
1323 l_map_str = l64_map_str;
1324 else
1325 l_map_str = l32_map_str;
1326 map = &vm->vm_map;
1327 vm_map_lock_read(map);
1328 VM_MAP_ENTRY_FOREACH(entry, map) {
1329 name = "";
1330 freename = NULL;
1331 /*
1332 * Skip printing of the guard page of the stack region, as
1333 * it confuses glibc pthread_getattr_np() method, where both
1334 * the base address and size of the stack of the initial thread
1335 * are calculated.
1336 */
1337 if ((entry->eflags & (MAP_ENTRY_IS_SUB_MAP | MAP_ENTRY_GUARD)) != 0)
1338 continue;
1339 e_prot = entry->protection;
1340 e_start = entry->start;
1341 e_end = entry->end;
1342 obj = entry->object.vm_object;
1343 off = entry->offset;
1344 for (lobj = tobj = obj; tobj != NULL;
1345 lobj = tobj, tobj = tobj->backing_object) {
1346 VM_OBJECT_RLOCK(tobj);
1347 off += lobj->backing_object_offset;
1348 if (lobj != obj)
1349 VM_OBJECT_RUNLOCK(lobj);
1350 }
1351 private = (entry->eflags & MAP_ENTRY_COW) != 0 || obj == NULL ||
1352 (obj->flags & OBJ_ANON) != 0;
1353 last_timestamp = map->timestamp;
1354 vm_map_unlock_read(map);
1355 ino = 0;
1356 if (lobj) {
1357 vp = vm_object_vnode(lobj);
1358 if (vp != NULL)
1359 vref(vp);
1360 if (lobj != obj)
1361 VM_OBJECT_RUNLOCK(lobj);
1362 VM_OBJECT_RUNLOCK(obj);
1363 if (vp != NULL) {
1364 vn_fullpath(vp, &name, &freename);
1365 vn_lock(vp, LK_SHARED | LK_RETRY);
1366 VOP_GETATTR(vp, &vat, td->td_ucred);
1367 ino = vat.va_fileid;
1368 vput(vp);
1369 } else if (SV_PROC_ABI(p) == SV_ABI_LINUX) {
1370 /*
1371 * sv_shared_page_base pointed out to the
1372 * FreeBSD sharedpage, PAGE_SIZE is a size
1373 * of it. The vDSO page is above.
1374 */
1375 if (e_start == p->p_sysent->sv_shared_page_base +
1376 PAGE_SIZE)
1377 name = vdso_str;
1378 if (e_end == p->p_sysent->sv_usrstack)
1379 name = stack_str;
1380 }
1381 }
1382
1383 /*
1384 * format:
1385 * start, end, access, offset, major, minor, inode, name.
1386 */
1387 error = sbuf_printf(sb, l_map_str,
1388 (u_long)e_start, (u_long)e_end,
1389 (e_prot & VM_PROT_READ)?"r":"-",
1390 (e_prot & VM_PROT_WRITE)?"w":"-",
1391 (e_prot & VM_PROT_EXECUTE)?"x":"-",
1392 private ? "p" : "s",
1393 (u_long)off,
1394 0,
1395 0,
1396 (u_long)ino,
1397 *name ? " " : " ",
1398 name
1399 );
1400 if (freename)
1401 free(freename, M_TEMP);
1402 vm_map_lock_read(map);
1403 if (error == -1) {
1404 error = 0;
1405 break;
1406 }
1407 if (last_timestamp != map->timestamp) {
1408 /*
1409 * Look again for the entry because the map was
1410 * modified while it was unlocked. Specifically,
1411 * the entry may have been clipped, merged, or deleted.
1412 */
1413 vm_map_lookup_entry(map, e_end - 1, &tmp_entry);
1414 entry = tmp_entry;
1415 }
1416 }
1417 vm_map_unlock_read(map);
1418 proc_vmspace_unref(td, p, PRVM_CHECK_DEBUG | PRVM_BLOCK_EXEC, vm);
1419
1420 return (error);
1421 }
1422
1423 /*
1424 * Filler function for proc/pid/mem
1425 */
1426 static int
linprocfs_doprocmem(PFS_FILL_ARGS)1427 linprocfs_doprocmem(PFS_FILL_ARGS)
1428 {
1429 ssize_t resid;
1430 int error;
1431
1432 resid = uio->uio_resid;
1433 error = procfs_doprocmem(PFS_FILL_ARGNAMES);
1434
1435 if (uio->uio_rw == UIO_READ && resid != uio->uio_resid)
1436 return (0);
1437
1438 if (error == EFAULT)
1439 error = EIO;
1440
1441 return (error);
1442 }
1443
1444 /*
1445 * Filler function for proc/net/dev
1446 */
1447 static int
linprocfs_donetdev_cb(if_t ifp,void * arg)1448 linprocfs_donetdev_cb(if_t ifp, void *arg)
1449 {
1450 char ifname[LINUX_IFNAMSIZ];
1451 struct sbuf *sb = arg;
1452
1453 if (ifname_bsd_to_linux_ifp(ifp, ifname, sizeof(ifname)) <= 0)
1454 return (ENODEV);
1455
1456 sbuf_printf(sb, "%6.6s: ", ifname);
1457 sbuf_printf(sb, "%7ju %7ju %4ju %4ju %4lu %5lu %10lu %9ju ",
1458 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IBYTES),
1459 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IPACKETS),
1460 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IERRORS),
1461 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IQDROPS),
1462 /* rx_missed_errors */
1463 0UL, /* rx_fifo_errors */
1464 0UL, /* rx_length_errors +
1465 * rx_over_errors +
1466 * rx_crc_errors +
1467 * rx_frame_errors */
1468 0UL, /* rx_compressed */
1469 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IMCASTS));
1470 /* XXX-BZ rx only? */
1471 sbuf_printf(sb, "%8ju %7ju %4ju %4ju %4lu %5ju %7lu %10lu\n",
1472 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OBYTES),
1473 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OPACKETS),
1474 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OERRORS),
1475 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OQDROPS),
1476 0UL, /* tx_fifo_errors */
1477 (uintmax_t)if_getcounter(ifp, IFCOUNTER_COLLISIONS),
1478 0UL, /* tx_carrier_errors +
1479 * tx_aborted_errors +
1480 * tx_window_errors +
1481 * tx_heartbeat_errors*/
1482 0UL); /* tx_compressed */
1483 return (0);
1484 }
1485
1486 static int
linprocfs_donetdev(PFS_FILL_ARGS)1487 linprocfs_donetdev(PFS_FILL_ARGS)
1488 {
1489 struct epoch_tracker et;
1490
1491 sbuf_printf(sb, "%6s|%58s|%s\n"
1492 "%6s|%58s|%58s\n",
1493 "Inter-", " Receive", " Transmit",
1494 " face",
1495 "bytes packets errs drop fifo frame compressed multicast",
1496 "bytes packets errs drop fifo colls carrier compressed");
1497
1498 CURVNET_SET(TD_TO_VNET(curthread));
1499 NET_EPOCH_ENTER(et);
1500 if_foreach(linprocfs_donetdev_cb, sb);
1501 NET_EPOCH_EXIT(et);
1502 CURVNET_RESTORE();
1503
1504 return (0);
1505 }
1506
1507 struct walkarg {
1508 struct sbuf *sb;
1509 };
1510
1511 static int
linux_route_print(struct rtentry * rt,void * vw)1512 linux_route_print(struct rtentry *rt, void *vw)
1513 {
1514 #ifdef INET
1515 struct walkarg *w = vw;
1516 struct route_nhop_data rnd;
1517 struct in_addr dst, mask;
1518 struct nhop_object *nh;
1519 char ifname[16];
1520 uint32_t scopeid = 0;
1521 uint32_t gw = 0;
1522 uint32_t linux_flags = 0;
1523
1524 rt_get_inet_prefix_pmask(rt, &dst, &mask, &scopeid);
1525
1526 rt_get_rnd(rt, &rnd);
1527
1528 /* select only first route in case of multipath */
1529 nh = nhop_select_func(rnd.rnd_nhop, 0);
1530
1531 if (ifname_bsd_to_linux_ifp(nh->nh_ifp, ifname, sizeof(ifname)) <= 0)
1532 return (ENODEV);
1533
1534 gw = (nh->nh_flags & NHF_GATEWAY)
1535 ? nh->gw4_sa.sin_addr.s_addr : 0;
1536
1537 linux_flags = RTF_UP |
1538 (nhop_get_rtflags(nh) & (RTF_GATEWAY | RTF_HOST));
1539
1540 sbuf_printf(w->sb,
1541 "%s\t"
1542 "%08X\t%08X\t%04X\t"
1543 "%d\t%u\t%d\t"
1544 "%08X\t%d\t%u\t%u",
1545 ifname,
1546 dst.s_addr, gw, linux_flags,
1547 0, 0, rnd.rnd_weight,
1548 mask.s_addr, nh->nh_mtu, 0, 0);
1549
1550 sbuf_printf(w->sb, "\n\n");
1551 #endif
1552 return (0);
1553 }
1554
1555 /*
1556 * Filler function for proc/net/route
1557 */
1558 static int
linprocfs_donetroute(PFS_FILL_ARGS)1559 linprocfs_donetroute(PFS_FILL_ARGS)
1560 {
1561 struct epoch_tracker et;
1562 struct walkarg w = {
1563 .sb = sb
1564 };
1565 uint32_t fibnum = curthread->td_proc->p_fibnum;
1566
1567 sbuf_printf(w.sb, "%-127s\n", "Iface\tDestination\tGateway "
1568 "\tFlags\tRefCnt\tUse\tMetric\tMask\t\tMTU"
1569 "\tWindow\tIRTT");
1570
1571 CURVNET_SET(TD_TO_VNET(curthread));
1572 NET_EPOCH_ENTER(et);
1573 rib_walk(fibnum, AF_INET, false, linux_route_print, &w);
1574 NET_EPOCH_EXIT(et);
1575 CURVNET_RESTORE();
1576
1577 return (0);
1578 }
1579
1580 /*
1581 * Filler function for proc/sys/kernel/osrelease
1582 */
1583 static int
linprocfs_doosrelease(PFS_FILL_ARGS)1584 linprocfs_doosrelease(PFS_FILL_ARGS)
1585 {
1586 char osrelease[LINUX_MAX_UTSNAME];
1587
1588 linux_get_osrelease(td, osrelease);
1589 sbuf_printf(sb, "%s\n", osrelease);
1590
1591 return (0);
1592 }
1593
1594 /*
1595 * Filler function for proc/sys/kernel/ostype
1596 */
1597 static int
linprocfs_doostype(PFS_FILL_ARGS)1598 linprocfs_doostype(PFS_FILL_ARGS)
1599 {
1600 char osname[LINUX_MAX_UTSNAME];
1601
1602 linux_get_osname(td, osname);
1603 sbuf_printf(sb, "%s\n", osname);
1604
1605 return (0);
1606 }
1607
1608 /*
1609 * Filler function for proc/sys/kernel/version
1610 */
1611 static int
linprocfs_doosbuild(PFS_FILL_ARGS)1612 linprocfs_doosbuild(PFS_FILL_ARGS)
1613 {
1614
1615 linprocfs_osbuild(td, sb);
1616 sbuf_cat(sb, "\n");
1617 return (0);
1618 }
1619
1620 /*
1621 * Filler function for proc/sys/kernel/msgmax
1622 */
1623 static int
linprocfs_domsgmax(PFS_FILL_ARGS)1624 linprocfs_domsgmax(PFS_FILL_ARGS)
1625 {
1626
1627 sbuf_printf(sb, "%d\n", msginfo.msgmax);
1628 return (0);
1629 }
1630
1631 /*
1632 * Filler function for proc/sys/kernel/msgmni
1633 */
1634 static int
linprocfs_domsgmni(PFS_FILL_ARGS)1635 linprocfs_domsgmni(PFS_FILL_ARGS)
1636 {
1637
1638 sbuf_printf(sb, "%d\n", msginfo.msgmni);
1639 return (0);
1640 }
1641
1642 /*
1643 * Filler function for proc/sys/kernel/msgmnb
1644 */
1645 static int
linprocfs_domsgmnb(PFS_FILL_ARGS)1646 linprocfs_domsgmnb(PFS_FILL_ARGS)
1647 {
1648
1649 sbuf_printf(sb, "%d\n", msginfo.msgmnb);
1650 return (0);
1651 }
1652
1653 /*
1654 * Filler function for proc/sys/kernel/ngroups_max
1655 *
1656 * Note that in Linux it defaults to 65536, not 1023.
1657 */
1658 static int
linprocfs_dongroups_max(PFS_FILL_ARGS)1659 linprocfs_dongroups_max(PFS_FILL_ARGS)
1660 {
1661
1662 sbuf_printf(sb, "%d\n", ngroups_max);
1663 return (0);
1664 }
1665
1666 /*
1667 * Filler function for proc/sys/kernel/pid_max
1668 */
1669 static int
linprocfs_dopid_max(PFS_FILL_ARGS)1670 linprocfs_dopid_max(PFS_FILL_ARGS)
1671 {
1672
1673 sbuf_printf(sb, "%i\n", PID_MAX);
1674 return (0);
1675 }
1676
1677 /*
1678 * Filler function for proc/sys/kernel/sem
1679 */
1680 static int
linprocfs_dosem(PFS_FILL_ARGS)1681 linprocfs_dosem(PFS_FILL_ARGS)
1682 {
1683
1684 sbuf_printf(sb, "%d %d %d %d\n", seminfo.semmsl, seminfo.semmns,
1685 seminfo.semopm, seminfo.semmni);
1686 return (0);
1687 }
1688
1689 /*
1690 * Filler function for proc/sys/kernel/shmall
1691 */
1692 static int
linprocfs_doshmall(PFS_FILL_ARGS)1693 linprocfs_doshmall(PFS_FILL_ARGS)
1694 {
1695
1696 sbuf_printf(sb, "%lu\n", shminfo.shmall);
1697 return (0);
1698 }
1699
1700 /*
1701 * Filler function for proc/sys/kernel/shmmax
1702 */
1703 static int
linprocfs_doshmmax(PFS_FILL_ARGS)1704 linprocfs_doshmmax(PFS_FILL_ARGS)
1705 {
1706
1707 sbuf_printf(sb, "%lu\n", shminfo.shmmax);
1708 return (0);
1709 }
1710
1711 /*
1712 * Filler function for proc/sys/kernel/shmmni
1713 */
1714 static int
linprocfs_doshmmni(PFS_FILL_ARGS)1715 linprocfs_doshmmni(PFS_FILL_ARGS)
1716 {
1717
1718 sbuf_printf(sb, "%lu\n", shminfo.shmmni);
1719 return (0);
1720 }
1721
1722 /*
1723 * Filler function for proc/sys/kernel/tainted
1724 */
1725 static int
linprocfs_dotainted(PFS_FILL_ARGS)1726 linprocfs_dotainted(PFS_FILL_ARGS)
1727 {
1728
1729 sbuf_printf(sb, "0\n");
1730 return (0);
1731 }
1732
1733 /*
1734 * Filler function for proc/sys/kernel/threads-max
1735 */
1736 static int
linprocfs_dothreads_max(PFS_FILL_ARGS)1737 linprocfs_dothreads_max(PFS_FILL_ARGS)
1738 {
1739 int res, error;
1740 size_t size = sizeof(res);
1741
1742 error = kernel_sysctlbyname(curthread, "kern.maxproc",
1743 &res, &size, NULL, 0, 0, 0);
1744 if (error != 0)
1745 return (error);
1746 sbuf_printf(sb, "%d\n", res);
1747 return (0);
1748 }
1749
1750 /*
1751 * Filler function for proc/sys/vm/min_free_kbytes
1752 *
1753 * This mirrors the approach in illumos to return zero for reads. Effectively,
1754 * it says, no memory is kept in reserve for "atomic allocations". This class
1755 * of allocation can be used at times when a thread cannot be suspended.
1756 */
1757 static int
linprocfs_dominfree(PFS_FILL_ARGS)1758 linprocfs_dominfree(PFS_FILL_ARGS)
1759 {
1760
1761 sbuf_printf(sb, "%d\n", 0);
1762 return (0);
1763 }
1764
1765 /*
1766 * Filler function for proc/scsi/device_info
1767 */
1768 static int
linprocfs_doscsidevinfo(PFS_FILL_ARGS)1769 linprocfs_doscsidevinfo(PFS_FILL_ARGS)
1770 {
1771
1772 return (0);
1773 }
1774
1775 /*
1776 * Filler function for proc/scsi/scsi
1777 */
1778 static int
linprocfs_doscsiscsi(PFS_FILL_ARGS)1779 linprocfs_doscsiscsi(PFS_FILL_ARGS)
1780 {
1781
1782 return (0);
1783 }
1784
1785 /*
1786 * Filler function for proc/devices
1787 */
1788 static int
linprocfs_dodevices(PFS_FILL_ARGS)1789 linprocfs_dodevices(PFS_FILL_ARGS)
1790 {
1791 char *char_devices;
1792 sbuf_printf(sb, "Character devices:\n");
1793
1794 char_devices = linux_get_char_devices();
1795 sbuf_printf(sb, "%s", char_devices);
1796 linux_free_get_char_devices(char_devices);
1797
1798 sbuf_printf(sb, "\nBlock devices:\n");
1799
1800 return (0);
1801 }
1802
1803 /*
1804 * Filler function for proc/cmdline
1805 */
1806 static int
linprocfs_docmdline(PFS_FILL_ARGS)1807 linprocfs_docmdline(PFS_FILL_ARGS)
1808 {
1809
1810 sbuf_printf(sb, "BOOT_IMAGE=%s", kernelname);
1811 sbuf_printf(sb, " ro root=302\n");
1812 return (0);
1813 }
1814
1815 /*
1816 * Filler function for proc/filesystems
1817 */
1818 static int
linprocfs_dofilesystems(PFS_FILL_ARGS)1819 linprocfs_dofilesystems(PFS_FILL_ARGS)
1820 {
1821 struct vfsconf *vfsp;
1822
1823 vfsconf_slock();
1824 TAILQ_FOREACH(vfsp, &vfsconf, vfc_list) {
1825 if (vfsp->vfc_flags & VFCF_SYNTHETIC)
1826 sbuf_printf(sb, "nodev");
1827 sbuf_printf(sb, "\t%s\n", vfsp->vfc_name);
1828 }
1829 vfsconf_sunlock();
1830 return(0);
1831 }
1832
1833 /*
1834 * Filler function for proc/modules
1835 */
1836 static int
linprocfs_domodules(PFS_FILL_ARGS)1837 linprocfs_domodules(PFS_FILL_ARGS)
1838 {
1839 #if 0
1840 struct linker_file *lf;
1841
1842 TAILQ_FOREACH(lf, &linker_files, link) {
1843 sbuf_printf(sb, "%-20s%8lu%4d\n", lf->filename,
1844 (unsigned long)lf->size, lf->refs);
1845 }
1846 #endif
1847 return (0);
1848 }
1849
1850 /*
1851 * Filler function for proc/pid/fd
1852 */
1853 static int
linprocfs_dofdescfs(PFS_FILL_ARGS)1854 linprocfs_dofdescfs(PFS_FILL_ARGS)
1855 {
1856
1857 if (p == curproc)
1858 sbuf_printf(sb, "/dev/fd");
1859 else
1860 sbuf_printf(sb, "unknown");
1861 return (0);
1862 }
1863
1864 /*
1865 * Filler function for proc/pid/limits
1866 */
1867 static const struct linux_rlimit_ident {
1868 const char *desc;
1869 const char *unit;
1870 unsigned int rlim_id;
1871 } linux_rlimits_ident[] = {
1872 { "Max cpu time", "seconds", RLIMIT_CPU },
1873 { "Max file size", "bytes", RLIMIT_FSIZE },
1874 { "Max data size", "bytes", RLIMIT_DATA },
1875 { "Max stack size", "bytes", RLIMIT_STACK },
1876 { "Max core file size", "bytes", RLIMIT_CORE },
1877 { "Max resident set", "bytes", RLIMIT_RSS },
1878 { "Max processes", "processes", RLIMIT_NPROC },
1879 { "Max open files", "files", RLIMIT_NOFILE },
1880 { "Max locked memory", "bytes", RLIMIT_MEMLOCK },
1881 { "Max address space", "bytes", RLIMIT_AS },
1882 { "Max file locks", "locks", LINUX_RLIMIT_LOCKS },
1883 { "Max pending signals", "signals", LINUX_RLIMIT_SIGPENDING },
1884 { "Max msgqueue size", "bytes", LINUX_RLIMIT_MSGQUEUE },
1885 { "Max nice priority", "", LINUX_RLIMIT_NICE },
1886 { "Max realtime priority", "", LINUX_RLIMIT_RTPRIO },
1887 { "Max realtime timeout", "us", LINUX_RLIMIT_RTTIME },
1888 { 0, 0, 0 }
1889 };
1890
1891 static int
linprocfs_doproclimits(PFS_FILL_ARGS)1892 linprocfs_doproclimits(PFS_FILL_ARGS)
1893 {
1894 const struct linux_rlimit_ident *li;
1895 struct plimit *limp;
1896 struct rlimit rl;
1897 ssize_t size;
1898 int res, error;
1899
1900 error = 0;
1901
1902 PROC_LOCK(p);
1903 limp = lim_hold(p->p_limit);
1904 PROC_UNLOCK(p);
1905 size = sizeof(res);
1906 sbuf_printf(sb, "%-26s%-21s%-21s%-21s\n", "Limit", "Soft Limit",
1907 "Hard Limit", "Units");
1908 for (li = linux_rlimits_ident; li->desc != NULL; ++li) {
1909 switch (li->rlim_id)
1910 {
1911 case LINUX_RLIMIT_LOCKS:
1912 /* FALLTHROUGH */
1913 case LINUX_RLIMIT_RTTIME:
1914 rl.rlim_cur = RLIM_INFINITY;
1915 break;
1916 case LINUX_RLIMIT_SIGPENDING:
1917 error = kernel_sysctlbyname(td,
1918 "kern.sigqueue.max_pending_per_proc",
1919 &res, &size, 0, 0, 0, 0);
1920 if (error != 0)
1921 continue;
1922 rl.rlim_cur = res;
1923 rl.rlim_max = res;
1924 break;
1925 case LINUX_RLIMIT_MSGQUEUE:
1926 error = kernel_sysctlbyname(td,
1927 "kern.ipc.msgmnb", &res, &size, 0, 0, 0, 0);
1928 if (error != 0)
1929 continue;
1930 rl.rlim_cur = res;
1931 rl.rlim_max = res;
1932 break;
1933 case LINUX_RLIMIT_NICE:
1934 /* FALLTHROUGH */
1935 case LINUX_RLIMIT_RTPRIO:
1936 rl.rlim_cur = 0;
1937 rl.rlim_max = 0;
1938 break;
1939 default:
1940 rl = limp->pl_rlimit[li->rlim_id];
1941 break;
1942 }
1943 if (rl.rlim_cur == RLIM_INFINITY)
1944 sbuf_printf(sb, "%-26s%-21s%-21s%-10s\n",
1945 li->desc, "unlimited", "unlimited", li->unit);
1946 else
1947 sbuf_printf(sb, "%-26s%-21llu%-21llu%-10s\n",
1948 li->desc, (unsigned long long)rl.rlim_cur,
1949 (unsigned long long)rl.rlim_max, li->unit);
1950 }
1951
1952 lim_free(limp);
1953 return (0);
1954 }
1955
1956 /*
1957 * The point of the following two functions is to work around
1958 * an assertion in Chromium; see kern/240991 for details.
1959 */
1960 static int
linprocfs_dotaskattr(PFS_ATTR_ARGS)1961 linprocfs_dotaskattr(PFS_ATTR_ARGS)
1962 {
1963
1964 vap->va_nlink = 3;
1965 return (0);
1966 }
1967
1968 /*
1969 * Filler function for proc/<pid>/task/.dummy
1970 */
1971 static int
linprocfs_dotaskdummy(PFS_FILL_ARGS)1972 linprocfs_dotaskdummy(PFS_FILL_ARGS)
1973 {
1974
1975 return (0);
1976 }
1977
1978 /*
1979 * Filler function for proc/sys/kernel/random/uuid
1980 */
1981 static int
linprocfs_douuid(PFS_FILL_ARGS)1982 linprocfs_douuid(PFS_FILL_ARGS)
1983 {
1984 struct uuid uuid;
1985
1986 kern_uuidgen(&uuid, 1);
1987 sbuf_printf_uuid(sb, &uuid);
1988 sbuf_printf(sb, "\n");
1989 return(0);
1990 }
1991
1992 /*
1993 * Filler function for proc/sys/kernel/random/boot_id
1994 */
1995 static int
linprocfs_doboot_id(PFS_FILL_ARGS)1996 linprocfs_doboot_id(PFS_FILL_ARGS)
1997 {
1998 static bool firstboot = 1;
1999 static struct uuid uuid;
2000
2001 if (firstboot) {
2002 kern_uuidgen(&uuid, 1);
2003 firstboot = 0;
2004 }
2005 sbuf_printf_uuid(sb, &uuid);
2006 sbuf_printf(sb, "\n");
2007 return(0);
2008 }
2009
2010 /*
2011 * Filler function for proc/pid/auxv
2012 */
2013 static int
linprocfs_doauxv(PFS_FILL_ARGS)2014 linprocfs_doauxv(PFS_FILL_ARGS)
2015 {
2016 struct sbuf *asb;
2017 off_t buflen, resid;
2018 int error;
2019
2020 /*
2021 * Mimic linux behavior and pass only processes with usermode
2022 * address space as valid. Return zero silently otherwise.
2023 */
2024 if (p->p_vmspace == &vmspace0)
2025 return (0);
2026
2027 if (uio->uio_resid == 0)
2028 return (0);
2029 if (uio->uio_offset < 0 || uio->uio_resid < 0)
2030 return (EINVAL);
2031
2032 asb = sbuf_new_auto();
2033 if (asb == NULL)
2034 return (ENOMEM);
2035 error = proc_getauxv(td, p, asb);
2036 if (error != 0)
2037 goto out;
2038 error = sbuf_finish(asb);
2039 if (error != 0)
2040 goto out;
2041
2042 resid = sbuf_len(asb) - uio->uio_offset;
2043 if (resid > uio->uio_resid)
2044 buflen = uio->uio_resid;
2045 else
2046 buflen = resid;
2047 if (buflen > IOSIZE_MAX) {
2048 error = EINVAL;
2049 goto out;
2050 }
2051 if (buflen > maxphys)
2052 buflen = maxphys;
2053 if (resid > 0)
2054 error = uiomove(sbuf_data(asb) + uio->uio_offset, buflen, uio);
2055 out:
2056 sbuf_delete(asb);
2057 return (error);
2058 }
2059
2060 /*
2061 * Filler function for proc/self/oom_score_adj
2062 */
2063 static int
linprocfs_do_oom_score_adj(PFS_FILL_ARGS)2064 linprocfs_do_oom_score_adj(PFS_FILL_ARGS)
2065 {
2066 struct linux_pemuldata *pem;
2067 long oom;
2068
2069 pem = pem_find(p);
2070 if (pem == NULL || uio == NULL)
2071 return (EOPNOTSUPP);
2072 if (uio->uio_rw == UIO_READ) {
2073 sbuf_printf(sb, "%d\n", pem->oom_score_adj);
2074 } else {
2075 sbuf_trim(sb);
2076 sbuf_finish(sb);
2077 oom = strtol(sbuf_data(sb), NULL, 10);
2078 if (oom < LINUX_OOM_SCORE_ADJ_MIN ||
2079 oom > LINUX_OOM_SCORE_ADJ_MAX)
2080 return (EINVAL);
2081 pem->oom_score_adj = oom;
2082 }
2083 return (0);
2084 }
2085
2086 /*
2087 * Filler function for proc/sys/vm/max_map_count
2088 *
2089 * Maximum number of active map areas, on Linux this limits the number
2090 * of vmaps per mm struct. We don't limit mappings, return a suitable
2091 * large value.
2092 */
2093 static int
linprocfs_domax_map_cnt(PFS_FILL_ARGS)2094 linprocfs_domax_map_cnt(PFS_FILL_ARGS)
2095 {
2096
2097 sbuf_printf(sb, "%d\n", INT32_MAX);
2098 return (0);
2099 }
2100
2101 /*
2102 * Filler function for proc/sysvipc/msg
2103 */
2104 static int
linprocfs_dosysvipc_msg(PFS_FILL_ARGS)2105 linprocfs_dosysvipc_msg(PFS_FILL_ARGS)
2106 {
2107 struct msqid_kernel *msqids;
2108 size_t id, size;
2109 int error;
2110
2111 sbuf_printf(sb,
2112 "%10s %10s %4s %10s %10s %5s %5s %5s %5s %5s %5s %10s %10s %10s\n",
2113 "key", "msqid", "perms", "cbytes", "qnum", "lspid", "lrpid",
2114 "uid", "gid", "cuid", "cgid", "stime", "rtime", "ctime");
2115
2116 error = kern_get_msqids(curthread, &msqids, &size);
2117 if (error != 0)
2118 return (error);
2119
2120 for (id = 0; id < size; id++) {
2121 if (msqids[id].u.msg_qbytes == 0)
2122 continue;
2123 sbuf_printf(sb,
2124 "%10d %10zu %4o %10lu %10lu %5u %5u %5u %5u %5u %5u %jd %jd %jd\n",
2125 (int)msqids[id].u.msg_perm.key,
2126 IXSEQ_TO_IPCID(id, msqids[id].u.msg_perm),
2127 msqids[id].u.msg_perm.mode,
2128 msqids[id].u.msg_cbytes,
2129 msqids[id].u.msg_qnum,
2130 msqids[id].u.msg_lspid,
2131 msqids[id].u.msg_lrpid,
2132 msqids[id].u.msg_perm.uid,
2133 msqids[id].u.msg_perm.gid,
2134 msqids[id].u.msg_perm.cuid,
2135 msqids[id].u.msg_perm.cgid,
2136 (intmax_t)msqids[id].u.msg_stime,
2137 (intmax_t)msqids[id].u.msg_rtime,
2138 (intmax_t)msqids[id].u.msg_ctime);
2139 }
2140
2141 free(msqids, M_TEMP);
2142 return (0);
2143 }
2144
2145 /*
2146 * Filler function for proc/sysvipc/sem
2147 */
2148 static int
linprocfs_dosysvipc_sem(PFS_FILL_ARGS)2149 linprocfs_dosysvipc_sem(PFS_FILL_ARGS)
2150 {
2151 struct semid_kernel *semids;
2152 size_t id, size;
2153 int error;
2154
2155 sbuf_printf(sb, "%10s %10s %4s %10s %5s %5s %5s %5s %10s %10s\n",
2156 "key", "semid", "perms", "nsems", "uid", "gid", "cuid", "cgid",
2157 "otime", "ctime");
2158
2159 error = kern_get_sema(curthread, &semids, &size);
2160 if (error != 0)
2161 return (error);
2162
2163 for (id = 0; id < size; id++) {
2164 if ((semids[id].u.sem_perm.mode & SEM_ALLOC) == 0)
2165 continue;
2166 sbuf_printf(sb,
2167 "%10d %10zu %4o %10u %5u %5u %5u %5u %jd %jd\n",
2168 (int)semids[id].u.sem_perm.key,
2169 IXSEQ_TO_IPCID(id, semids[id].u.sem_perm),
2170 semids[id].u.sem_perm.mode,
2171 semids[id].u.sem_nsems,
2172 semids[id].u.sem_perm.uid,
2173 semids[id].u.sem_perm.gid,
2174 semids[id].u.sem_perm.cuid,
2175 semids[id].u.sem_perm.cgid,
2176 (intmax_t)semids[id].u.sem_otime,
2177 (intmax_t)semids[id].u.sem_ctime);
2178 }
2179
2180 free(semids, M_TEMP);
2181 return (0);
2182 }
2183
2184 /*
2185 * Filler function for proc/sysvipc/shm
2186 */
2187 static int
linprocfs_dosysvipc_shm(PFS_FILL_ARGS)2188 linprocfs_dosysvipc_shm(PFS_FILL_ARGS)
2189 {
2190 struct shmid_kernel *shmids;
2191 size_t id, size;
2192 int error;
2193
2194 sbuf_printf(sb,
2195 "%10s %10s %s %21s %5s %5s %5s %5s %5s %5s %5s %10s %10s %10s %21s %21s\n",
2196 "key", "shmid", "perms", "size", "cpid", "lpid", "nattch", "uid",
2197 "gid", "cuid", "cgid", "atime", "dtime", "ctime", "rss", "swap");
2198
2199 error = kern_get_shmsegs(curthread, &shmids, &size);
2200 if (error != 0)
2201 return (error);
2202
2203 for (id = 0; id < size; id++) {
2204 if ((shmids[id].u.shm_perm.mode & SHMSEG_ALLOCATED) == 0)
2205 continue;
2206 sbuf_printf(sb,
2207 "%10d %10zu %4o %21zu %5u %5u %5u %5u %5u %5u %5u %jd %jd %jd %21d %21d\n",
2208 (int)shmids[id].u.shm_perm.key,
2209 IXSEQ_TO_IPCID(id, shmids[id].u.shm_perm),
2210 shmids[id].u.shm_perm.mode,
2211 shmids[id].u.shm_segsz,
2212 shmids[id].u.shm_cpid,
2213 shmids[id].u.shm_lpid,
2214 shmids[id].u.shm_nattch,
2215 shmids[id].u.shm_perm.uid,
2216 shmids[id].u.shm_perm.gid,
2217 shmids[id].u.shm_perm.cuid,
2218 shmids[id].u.shm_perm.cgid,
2219 (intmax_t)shmids[id].u.shm_atime,
2220 (intmax_t)shmids[id].u.shm_dtime,
2221 (intmax_t)shmids[id].u.shm_ctime,
2222 0, 0); /* XXX rss & swp are not supported */
2223 }
2224
2225 free(shmids, M_TEMP);
2226 return (0);
2227 }
2228
2229 /*
2230 * Filler function for proc/sys/fs/file-max
2231 */
2232 static int
linprocfs_dofile_max(PFS_FILL_ARGS)2233 linprocfs_dofile_max(PFS_FILL_ARGS)
2234 {
2235 int res, error;
2236 size_t size = sizeof(res);
2237
2238 error = kernel_sysctlbyname(curthread, "kern.maxfiles",
2239 &res, &size, NULL, 0, 0, 0);
2240 if (error != 0)
2241 return (error);
2242 sbuf_printf(sb, "%d\n", res);
2243 return (0);
2244 }
2245
2246 /*
2247 * Filler function for proc/sys/fs/file-nr
2248 */
2249 static int
linprocfs_dofile_nr(PFS_FILL_ARGS)2250 linprocfs_dofile_nr(PFS_FILL_ARGS)
2251 {
2252 int openfiles, maxfiles, error;
2253 size_t size;
2254
2255 size = sizeof(openfiles);
2256 error = kernel_sysctlbyname(curthread, "kern.openfiles",
2257 &openfiles, &size, NULL, 0, 0, 0);
2258 if (error != 0)
2259 return (error);
2260 size = sizeof(maxfiles);
2261 error = kernel_sysctlbyname(curthread, "kern.maxfiles",
2262 &maxfiles, &size, NULL, 0, 0, 0);
2263 if (error != 0)
2264 return (error);
2265 /*
2266 * From Linux's proc_sys_fs(5):
2267 * the "free file handles" value is always zero.
2268 */
2269 sbuf_printf(sb, "%d\t0\t%d\n", openfiles, maxfiles);
2270 return (0);
2271 }
2272
2273 /*
2274 * Filler function for proc/sys/fs/nr_open
2275 */
2276 static int
linprocfs_donr_open(PFS_FILL_ARGS)2277 linprocfs_donr_open(PFS_FILL_ARGS)
2278 {
2279 int res, error;
2280 size_t size = sizeof(res);
2281
2282 error = kernel_sysctlbyname(curthread, "kern.maxfilesperproc",
2283 &res, &size, NULL, 0, 0, 0);
2284 if (error != 0)
2285 return (error);
2286 sbuf_printf(sb, "%d\n", res);
2287 return (0);
2288 }
2289
2290 /*
2291 * Filler function for proc/sys/fs/overflowuid
2292 */
2293 static int
linprocfs_dooverflowuid(PFS_FILL_ARGS)2294 linprocfs_dooverflowuid(PFS_FILL_ARGS)
2295 {
2296 sbuf_printf(sb, "%u\n", UID_NOBODY);
2297 return (0);
2298 }
2299
2300 /*
2301 * Filler function for proc/sys/fs/overflowgid
2302 */
2303 static int
linprocfs_dooverflowgid(PFS_FILL_ARGS)2304 linprocfs_dooverflowgid(PFS_FILL_ARGS)
2305 {
2306 sbuf_printf(sb, "%u\n", GID_NOGROUP);
2307 return (0);
2308 }
2309
2310 /*
2311 * Filler function for proc/sys/fs/suid_dumpable
2312 */
2313 static int
linprocfs_dosuid_dumpable(PFS_FILL_ARGS)2314 linprocfs_dosuid_dumpable(PFS_FILL_ARGS)
2315 {
2316 int res, error;
2317 size_t size = sizeof(res);
2318
2319 error = kernel_sysctlbyname(curthread, "kern.sugid_coredump",
2320 &res, &size, NULL, 0, 0, 0);
2321 if (error != 0)
2322 return (error);
2323 sbuf_printf(sb, "%d\n", res ? 1 : 0);
2324 return (0);
2325 }
2326
2327 /*
2328 * Filler function for proc/sys/fs/protected_hardlinks
2329 */
2330 static int
linprocfs_doprotected_hardlinks(PFS_FILL_ARGS)2331 linprocfs_doprotected_hardlinks(PFS_FILL_ARGS)
2332 {
2333 int res, error;
2334 size_t size = sizeof(res);
2335
2336 error = kernel_sysctlbyname(curthread,
2337 "security.bsd.hardlink_check_uid",
2338 &res, &size, NULL, 0, 0, 0);
2339 if (error != 0)
2340 return (error);
2341 sbuf_printf(sb, "%d\n", res ? 1 : 0);
2342 return (0);
2343 }
2344
2345 static int
linprocfs_doinotify(const char * sysctl,PFS_FILL_ARGS)2346 linprocfs_doinotify(const char *sysctl, PFS_FILL_ARGS)
2347 {
2348 size_t size;
2349 int error, val;
2350
2351 if (uio->uio_rw == UIO_READ) {
2352 size = sizeof(val);
2353 error = kernel_sysctlbyname(curthread,
2354 __DECONST(void *, sysctl), &val, &size, NULL, 0, 0, 0);
2355 if (error == 0)
2356 sbuf_printf(sb, "%d\n", val);
2357 } else {
2358 char *endp, *newval;
2359 long vall;
2360
2361 sbuf_trim(sb);
2362 sbuf_finish(sb);
2363 newval = sbuf_data(sb);
2364 vall = strtol(newval, &endp, 10);
2365 if (vall < 0 || vall > INT_MAX || endp == newval ||
2366 *endp != '\0')
2367 return (EINVAL);
2368 val = (int)vall;
2369 error = kernel_sysctlbyname(curthread,
2370 __DECONST(void *, sysctl), NULL, NULL,
2371 &val, sizeof(val), 0, 0);
2372 }
2373 return (error);
2374 }
2375
2376 /*
2377 * Filler function for proc/sys/fs/inotify/max_queued_events
2378 */
2379 static int
linprocfs_doinotify_max_queued_events(PFS_FILL_ARGS)2380 linprocfs_doinotify_max_queued_events(PFS_FILL_ARGS)
2381 {
2382 return (linprocfs_doinotify("vfs.inotify.max_queued_events",
2383 PFS_FILL_ARGNAMES));
2384 }
2385
2386 /*
2387 * Filler function for proc/sys/fs/inotify/max_user_instances
2388 */
2389 static int
linprocfs_doinotify_max_user_instances(PFS_FILL_ARGS)2390 linprocfs_doinotify_max_user_instances(PFS_FILL_ARGS)
2391 {
2392 return (linprocfs_doinotify("vfs.inotify.max_user_instances",
2393 PFS_FILL_ARGNAMES));
2394 }
2395
2396 /*
2397 * Filler function for proc/sys/fs/inotify/max_user_watches
2398 */
2399 static int
linprocfs_doinotify_max_user_watches(PFS_FILL_ARGS)2400 linprocfs_doinotify_max_user_watches(PFS_FILL_ARGS)
2401 {
2402 return (linprocfs_doinotify("vfs.inotify.max_user_watches",
2403 PFS_FILL_ARGNAMES));
2404 }
2405
2406 /*
2407 * Filler function for proc/sys/fs/mqueue/msg_default
2408 */
2409 static int
linprocfs_domqueue_msg_default(PFS_FILL_ARGS)2410 linprocfs_domqueue_msg_default(PFS_FILL_ARGS)
2411 {
2412 int res, error;
2413 size_t size = sizeof(res);
2414
2415 error = kernel_sysctlbyname(curthread, "kern.mqueue.default_maxmsg",
2416 &res, &size, NULL, 0, 0, 0);
2417 if (error != 0)
2418 return (error);
2419
2420 sbuf_printf(sb, "%d\n", res);
2421 return (0);
2422 }
2423
2424 /*
2425 * Filler function for proc/sys/fs/mqueue/msgsize_default
2426 */
2427 static int
linprocfs_domqueue_msgsize_default(PFS_FILL_ARGS)2428 linprocfs_domqueue_msgsize_default(PFS_FILL_ARGS)
2429 {
2430 int res, error;
2431 size_t size = sizeof(res);
2432
2433 error = kernel_sysctlbyname(curthread, "kern.mqueue.default_msgsize",
2434 &res, &size, NULL, 0, 0, 0);
2435 if (error != 0)
2436 return (error);
2437
2438 sbuf_printf(sb, "%d\n", res);
2439 return (0);
2440
2441 }
2442
2443 /*
2444 * Filler function for proc/sys/fs/mqueue/msg_max
2445 */
2446 static int
linprocfs_domqueue_msg_max(PFS_FILL_ARGS)2447 linprocfs_domqueue_msg_max(PFS_FILL_ARGS)
2448 {
2449 int res, error;
2450 size_t size = sizeof(res);
2451
2452 error = kernel_sysctlbyname(curthread, "kern.mqueue.maxmsg",
2453 &res, &size, NULL, 0, 0, 0);
2454 if (error != 0)
2455 return (error);
2456
2457 sbuf_printf(sb, "%d\n", res);
2458 return (0);
2459 }
2460
2461 /*
2462 * Filler function for proc/sys/fs/mqueue/msgsize_max
2463 */
2464 static int
linprocfs_domqueue_msgsize_max(PFS_FILL_ARGS)2465 linprocfs_domqueue_msgsize_max(PFS_FILL_ARGS)
2466 {
2467 int res, error;
2468 size_t size = sizeof(res);
2469
2470 error = kernel_sysctlbyname(curthread, "kern.mqueue.maxmsgsize",
2471 &res, &size, NULL, 0, 0, 0);
2472 if (error != 0)
2473 return (error);
2474
2475 sbuf_printf(sb, "%d\n", res);
2476 return (0);
2477 }
2478
2479 /*
2480 * Filler function for proc/sys/fs/mqueue/queues_max
2481 */
2482 static int
linprocfs_domqueue_queues_max(PFS_FILL_ARGS)2483 linprocfs_domqueue_queues_max(PFS_FILL_ARGS)
2484 {
2485 int res, error;
2486 size_t size = sizeof(res);
2487
2488 error = kernel_sysctlbyname(curthread, "kern.mqueue.maxmq",
2489 &res, &size, NULL, 0, 0, 0);
2490 if (error != 0)
2491 return (error);
2492
2493 sbuf_printf(sb, "%d\n", res);
2494 return (0);
2495 }
2496
2497 /*
2498 * Constructor
2499 */
2500 static int
linprocfs_init(PFS_INIT_ARGS)2501 linprocfs_init(PFS_INIT_ARGS)
2502 {
2503 struct pfs_node *dir, *fs, *root, *sys;
2504
2505 root = pi->pi_root;
2506
2507 /* /proc/... */
2508 pfs_create_file(root, NULL, "cmdline", &linprocfs_docmdline, NULL, NULL,
2509 NULL, PFS_RD);
2510 pfs_create_file(root, NULL, "cpuinfo", &linprocfs_docpuinfo, NULL, NULL,
2511 NULL, PFS_RD);
2512 pfs_create_file(root, NULL, "devices", &linprocfs_dodevices, NULL, NULL,
2513 NULL, PFS_RD);
2514 pfs_create_file(root, NULL, "filesystems", &linprocfs_dofilesystems,
2515 NULL, NULL, NULL, PFS_RD);
2516 pfs_create_file(root, NULL, "loadavg", &linprocfs_doloadavg, NULL, NULL,
2517 NULL, PFS_RD);
2518 pfs_create_file(root, NULL, "meminfo", &linprocfs_domeminfo, NULL, NULL,
2519 NULL, PFS_RD);
2520 pfs_create_file(root, NULL, "modules", &linprocfs_domodules, NULL, NULL,
2521 NULL, PFS_RD);
2522 pfs_create_file(root, NULL, "mounts", &linprocfs_domtab, NULL, NULL,
2523 NULL, PFS_RD);
2524 pfs_create_file(root, NULL, "mtab", &linprocfs_domtab, NULL, NULL, NULL,
2525 PFS_RD);
2526 pfs_create_file(root, NULL, "partitions", &linprocfs_dopartitions, NULL,
2527 NULL, NULL, PFS_RD);
2528 pfs_create_link(root, NULL, "self", &procfs_docurproc, NULL, NULL, NULL,
2529 0);
2530 pfs_create_file(root, NULL, "stat", &linprocfs_dostat, NULL, NULL, NULL,
2531 PFS_RD);
2532 pfs_create_file(root, NULL, "swaps", &linprocfs_doswaps, NULL, NULL,
2533 NULL, PFS_RD);
2534 pfs_create_file(root, NULL, "uptime", &linprocfs_douptime, NULL, NULL,
2535 NULL, PFS_RD);
2536 pfs_create_file(root, NULL, "version", &linprocfs_doversion, NULL, NULL,
2537 NULL, PFS_RD);
2538
2539 /* /proc/bus/... */
2540 pfs_create_dir(root, &dir, "bus", NULL, NULL, NULL, 0);
2541 pfs_create_dir(dir, &dir, "pci", NULL, NULL, NULL, 0);
2542 pfs_create_dir(dir, &dir, "devices", NULL, NULL, NULL, 0);
2543
2544 /* /proc/net/... */
2545 pfs_create_dir(root, &dir, "net", NULL, NULL, NULL, 0);
2546 pfs_create_file(dir, NULL, "dev", &linprocfs_donetdev, NULL, NULL, NULL,
2547 PFS_RD);
2548 pfs_create_file(dir, NULL, "route", &linprocfs_donetroute, NULL, NULL,
2549 NULL, PFS_RD);
2550
2551 /* /proc/<pid>/... */
2552 pfs_create_dir(root, &dir, "pid", NULL, NULL, NULL, PFS_PROCDEP);
2553 pfs_create_file(dir, NULL, "cmdline", &linprocfs_doproccmdline, NULL,
2554 NULL, NULL, PFS_RD);
2555 pfs_create_link(dir, NULL, "cwd", &linprocfs_doproccwd, NULL, NULL,
2556 NULL, 0);
2557 pfs_create_file(dir, NULL, "environ", &linprocfs_doprocenviron, NULL,
2558 &procfs_candebug, NULL, PFS_RD);
2559 pfs_create_link(dir, NULL, "exe", &procfs_doprocfile, NULL,
2560 &procfs_notsystem, NULL, 0);
2561 pfs_create_file(dir, NULL, "maps", &linprocfs_doprocmaps, NULL, NULL,
2562 NULL, PFS_RD | PFS_AUTODRAIN);
2563 pfs_create_file(dir, NULL, "mem", &linprocfs_doprocmem, procfs_attr_rw,
2564 &procfs_candebug, NULL, PFS_RDWR | PFS_RAW);
2565 pfs_create_file(dir, NULL, "mountinfo", &linprocfs_doprocmountinfo,
2566 NULL, NULL, NULL, PFS_RD);
2567 pfs_create_file(dir, NULL, "mounts", &linprocfs_domtab, NULL, NULL,
2568 NULL, PFS_RD);
2569 pfs_create_link(dir, NULL, "root", &linprocfs_doprocroot, NULL, NULL,
2570 NULL, 0);
2571 pfs_create_file(dir, NULL, "stat", &linprocfs_doprocstat, NULL, NULL,
2572 NULL, PFS_RD);
2573 pfs_create_file(dir, NULL, "statm", &linprocfs_doprocstatm, NULL, NULL,
2574 NULL, PFS_RD);
2575 pfs_create_file(dir, NULL, "status", &linprocfs_doprocstatus, NULL,
2576 NULL, NULL, PFS_RD);
2577 pfs_create_link(dir, NULL, "fd", &linprocfs_dofdescfs, NULL, NULL, NULL,
2578 0);
2579 pfs_create_file(dir, NULL, "auxv", &linprocfs_doauxv, NULL,
2580 &procfs_candebug, NULL, PFS_RD | PFS_RAWRD);
2581 pfs_create_file(dir, NULL, "limits", &linprocfs_doproclimits, NULL,
2582 NULL, NULL, PFS_RD);
2583 pfs_create_file(dir, NULL, "oom_score_adj", &linprocfs_do_oom_score_adj,
2584 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR);
2585
2586 /* /proc/<pid>/task/... */
2587 pfs_create_dir(dir, &dir, "task", linprocfs_dotaskattr, NULL, NULL, 0);
2588 pfs_create_file(dir, NULL, ".dummy", &linprocfs_dotaskdummy, NULL, NULL,
2589 NULL, PFS_RD);
2590
2591 /* /proc/scsi/... */
2592 pfs_create_dir(root, &dir, "scsi", NULL, NULL, NULL, 0);
2593 pfs_create_file(dir, NULL, "device_info", &linprocfs_doscsidevinfo,
2594 NULL, NULL, NULL, PFS_RD);
2595 pfs_create_file(dir, NULL, "scsi", &linprocfs_doscsiscsi, NULL, NULL,
2596 NULL, PFS_RD);
2597
2598 /* /proc/sys/... */
2599 pfs_create_dir(root, &sys, "sys", NULL, NULL, NULL, 0);
2600
2601 /* /proc/sys/kernel/... */
2602 pfs_create_dir(sys, &dir, "kernel", NULL, NULL, NULL, 0);
2603 pfs_create_file(dir, NULL, "osrelease", &linprocfs_doosrelease, NULL,
2604 NULL, NULL, PFS_RD);
2605 pfs_create_file(dir, NULL, "ostype", &linprocfs_doostype, NULL, NULL,
2606 NULL, PFS_RD);
2607 pfs_create_file(dir, NULL, "version", &linprocfs_doosbuild, NULL, NULL,
2608 NULL, PFS_RD);
2609 pfs_create_file(dir, NULL, "msgmax", &linprocfs_domsgmax, NULL, NULL,
2610 NULL, PFS_RD);
2611 pfs_create_file(dir, NULL, "msgmni", &linprocfs_domsgmni, NULL, NULL,
2612 NULL, PFS_RD);
2613 pfs_create_file(dir, NULL, "msgmnb", &linprocfs_domsgmnb, NULL, NULL,
2614 NULL, PFS_RD);
2615 pfs_create_file(dir, NULL, "ngroups_max", &linprocfs_dongroups_max,
2616 NULL, NULL, NULL, PFS_RD);
2617 pfs_create_file(dir, NULL, "pid_max", &linprocfs_dopid_max, NULL, NULL,
2618 NULL, PFS_RD);
2619 pfs_create_file(dir, NULL, "sem", &linprocfs_dosem, NULL, NULL, NULL,
2620 PFS_RD);
2621 pfs_create_file(dir, NULL, "shmall", &linprocfs_doshmall, NULL, NULL,
2622 NULL, PFS_RD);
2623 pfs_create_file(dir, NULL, "shmmax", &linprocfs_doshmmax, NULL, NULL,
2624 NULL, PFS_RD);
2625 pfs_create_file(dir, NULL, "shmmni", &linprocfs_doshmmni, NULL, NULL,
2626 NULL, PFS_RD);
2627 pfs_create_file(dir, NULL, "tainted", &linprocfs_dotainted, NULL, NULL,
2628 NULL, PFS_RD);
2629 pfs_create_file(dir, NULL, "threads-max", &linprocfs_dothreads_max,
2630 NULL, NULL, NULL, PFS_RD);
2631
2632 /* /proc/sys/kernel/random/... */
2633 pfs_create_dir(dir, &dir, "random", NULL, NULL, NULL, 0);
2634 pfs_create_file(dir, NULL, "uuid", &linprocfs_douuid, NULL, NULL, NULL,
2635 PFS_RD);
2636 pfs_create_file(dir, NULL, "boot_id", &linprocfs_doboot_id, NULL, NULL,
2637 NULL, PFS_RD);
2638
2639 /* /proc/sys/vm/.... */
2640 pfs_create_dir(sys, &dir, "vm", NULL, NULL, NULL, 0);
2641 pfs_create_file(dir, NULL, "min_free_kbytes", &linprocfs_dominfree,
2642 NULL, NULL, NULL, PFS_RD);
2643 pfs_create_file(dir, NULL, "max_map_count", &linprocfs_domax_map_cnt,
2644 NULL, NULL, NULL, PFS_RD);
2645
2646 /* /proc/sysvipc/... */
2647 pfs_create_dir(root, &dir, "sysvipc", NULL, NULL, NULL, 0);
2648 pfs_create_file(dir, NULL, "msg", &linprocfs_dosysvipc_msg, NULL, NULL,
2649 NULL, PFS_RD);
2650 pfs_create_file(dir, NULL, "sem", &linprocfs_dosysvipc_sem, NULL, NULL,
2651 NULL, PFS_RD);
2652 pfs_create_file(dir, NULL, "shm", &linprocfs_dosysvipc_shm, NULL, NULL,
2653 NULL, PFS_RD);
2654
2655 /* /proc/sys/fs/... */
2656 pfs_create_dir(sys, &fs, "fs", NULL, NULL, NULL, 0);
2657
2658 pfs_create_file(fs, NULL, "file-nr", &linprocfs_dofile_nr,
2659 NULL, NULL, NULL, PFS_RD);
2660 pfs_create_file(fs, NULL, "file-max", &linprocfs_dofile_max,
2661 NULL, NULL, NULL, PFS_RD);
2662 pfs_create_file(fs, NULL, "nr_open", &linprocfs_donr_open,
2663 NULL, NULL, NULL, PFS_RD);
2664 pfs_create_file(fs, NULL, "overflowgid", &linprocfs_dooverflowgid,
2665 NULL, NULL, NULL, PFS_RD);
2666 pfs_create_file(fs, NULL, "overflowuid", &linprocfs_dooverflowuid,
2667 NULL, NULL, NULL, PFS_RD);
2668 pfs_create_file(fs, NULL, "protected_hardlinks",
2669 &linprocfs_doprotected_hardlinks, NULL, NULL, NULL, PFS_RD);
2670 pfs_create_file(fs, NULL, "suid_dumpable", &linprocfs_dosuid_dumpable,
2671 NULL, NULL, NULL, PFS_RD);
2672
2673 pfs_create_dir(fs, &dir, "inotify", NULL, NULL, NULL, 0);
2674 pfs_create_file(dir, NULL, "max_queued_events",
2675 &linprocfs_doinotify_max_queued_events, NULL, NULL, NULL, PFS_RDWR);
2676 pfs_create_file(dir, NULL, "max_user_instances",
2677 &linprocfs_doinotify_max_user_instances, NULL, NULL, NULL, PFS_RDWR);
2678 pfs_create_file(dir, NULL, "max_user_watches",
2679 &linprocfs_doinotify_max_user_watches, NULL, NULL, NULL, PFS_RDWR);
2680
2681 /* /proc/sys/fs/mqueue/... */
2682 pfs_create_dir(fs, &dir, "mqueue", NULL, NULL, NULL, 0);
2683 pfs_create_file(dir, NULL, "msg_default",
2684 &linprocfs_domqueue_msg_default, NULL, NULL, NULL, PFS_RD);
2685 pfs_create_file(dir, NULL, "msgsize_default",
2686 &linprocfs_domqueue_msgsize_default, NULL, NULL, NULL, PFS_RD);
2687 pfs_create_file(dir, NULL, "msg_max", &linprocfs_domqueue_msg_max, NULL,
2688 NULL, NULL, PFS_RD);
2689 pfs_create_file(dir, NULL, "msgsize_max",
2690 &linprocfs_domqueue_msgsize_max, NULL, NULL, NULL, PFS_RD);
2691 pfs_create_file(dir, NULL, "queues_max", &linprocfs_domqueue_queues_max,
2692 NULL, NULL, NULL, PFS_RD);
2693
2694 return (0);
2695 }
2696
2697 /*
2698 * Destructor
2699 */
2700 static int
linprocfs_uninit(PFS_INIT_ARGS)2701 linprocfs_uninit(PFS_INIT_ARGS)
2702 {
2703
2704 /* nothing to do, pseudofs will GC */
2705 return (0);
2706 }
2707
2708 PSEUDOFS(linprocfs, 1, VFCF_JAIL);
2709 #if defined(__aarch64__) || defined(__amd64__)
2710 MODULE_DEPEND(linprocfs, linux_common, 1, 1, 1);
2711 #else
2712 MODULE_DEPEND(linprocfs, linux, 1, 1, 1);
2713 #endif
2714 MODULE_DEPEND(linprocfs, procfs, 1, 1, 1);
2715 MODULE_DEPEND(linprocfs, sysvmsg, 1, 1, 1);
2716 MODULE_DEPEND(linprocfs, sysvsem, 1, 1, 1);
2717 MODULE_DEPEND(linprocfs, sysvshm, 1, 1, 1);
2718