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 PROC_LOCK(p);
1315 error = p_candebug(td, p);
1316 PROC_UNLOCK(p);
1317 if (error)
1318 return (error);
1319
1320 if (uio->uio_rw != UIO_READ)
1321 return (EOPNOTSUPP);
1322
1323 error = 0;
1324 vm = vmspace_acquire_ref(p);
1325 if (vm == NULL)
1326 return (ESRCH);
1327
1328 if (SV_CURPROC_FLAG(SV_LP64))
1329 l_map_str = l64_map_str;
1330 else
1331 l_map_str = l32_map_str;
1332 map = &vm->vm_map;
1333 vm_map_lock_read(map);
1334 VM_MAP_ENTRY_FOREACH(entry, map) {
1335 name = "";
1336 freename = NULL;
1337 /*
1338 * Skip printing of the guard page of the stack region, as
1339 * it confuses glibc pthread_getattr_np() method, where both
1340 * the base address and size of the stack of the initial thread
1341 * are calculated.
1342 */
1343 if ((entry->eflags & (MAP_ENTRY_IS_SUB_MAP | MAP_ENTRY_GUARD)) != 0)
1344 continue;
1345 e_prot = entry->protection;
1346 e_start = entry->start;
1347 e_end = entry->end;
1348 obj = entry->object.vm_object;
1349 off = entry->offset;
1350 for (lobj = tobj = obj; tobj != NULL;
1351 lobj = tobj, tobj = tobj->backing_object) {
1352 VM_OBJECT_RLOCK(tobj);
1353 off += lobj->backing_object_offset;
1354 if (lobj != obj)
1355 VM_OBJECT_RUNLOCK(lobj);
1356 }
1357 private = (entry->eflags & MAP_ENTRY_COW) != 0 || obj == NULL ||
1358 (obj->flags & OBJ_ANON) != 0;
1359 last_timestamp = map->timestamp;
1360 vm_map_unlock_read(map);
1361 ino = 0;
1362 if (lobj) {
1363 vp = vm_object_vnode(lobj);
1364 if (vp != NULL)
1365 vref(vp);
1366 if (lobj != obj)
1367 VM_OBJECT_RUNLOCK(lobj);
1368 VM_OBJECT_RUNLOCK(obj);
1369 if (vp != NULL) {
1370 vn_fullpath(vp, &name, &freename);
1371 vn_lock(vp, LK_SHARED | LK_RETRY);
1372 VOP_GETATTR(vp, &vat, td->td_ucred);
1373 ino = vat.va_fileid;
1374 vput(vp);
1375 } else if (SV_PROC_ABI(p) == SV_ABI_LINUX) {
1376 /*
1377 * sv_shared_page_base pointed out to the
1378 * FreeBSD sharedpage, PAGE_SIZE is a size
1379 * of it. The vDSO page is above.
1380 */
1381 if (e_start == p->p_sysent->sv_shared_page_base +
1382 PAGE_SIZE)
1383 name = vdso_str;
1384 if (e_end == p->p_sysent->sv_usrstack)
1385 name = stack_str;
1386 }
1387 }
1388
1389 /*
1390 * format:
1391 * start, end, access, offset, major, minor, inode, name.
1392 */
1393 error = sbuf_printf(sb, l_map_str,
1394 (u_long)e_start, (u_long)e_end,
1395 (e_prot & VM_PROT_READ)?"r":"-",
1396 (e_prot & VM_PROT_WRITE)?"w":"-",
1397 (e_prot & VM_PROT_EXECUTE)?"x":"-",
1398 private ? "p" : "s",
1399 (u_long)off,
1400 0,
1401 0,
1402 (u_long)ino,
1403 *name ? " " : " ",
1404 name
1405 );
1406 if (freename)
1407 free(freename, M_TEMP);
1408 vm_map_lock_read(map);
1409 if (error == -1) {
1410 error = 0;
1411 break;
1412 }
1413 if (last_timestamp != map->timestamp) {
1414 /*
1415 * Look again for the entry because the map was
1416 * modified while it was unlocked. Specifically,
1417 * the entry may have been clipped, merged, or deleted.
1418 */
1419 vm_map_lookup_entry(map, e_end - 1, &tmp_entry);
1420 entry = tmp_entry;
1421 }
1422 }
1423 vm_map_unlock_read(map);
1424 vmspace_free(vm);
1425
1426 return (error);
1427 }
1428
1429 /*
1430 * Filler function for proc/pid/mem
1431 */
1432 static int
linprocfs_doprocmem(PFS_FILL_ARGS)1433 linprocfs_doprocmem(PFS_FILL_ARGS)
1434 {
1435 ssize_t resid;
1436 int error;
1437
1438 resid = uio->uio_resid;
1439 error = procfs_doprocmem(PFS_FILL_ARGNAMES);
1440
1441 if (uio->uio_rw == UIO_READ && resid != uio->uio_resid)
1442 return (0);
1443
1444 if (error == EFAULT)
1445 error = EIO;
1446
1447 return (error);
1448 }
1449
1450 /*
1451 * Filler function for proc/net/dev
1452 */
1453 static int
linprocfs_donetdev_cb(if_t ifp,void * arg)1454 linprocfs_donetdev_cb(if_t ifp, void *arg)
1455 {
1456 char ifname[LINUX_IFNAMSIZ];
1457 struct sbuf *sb = arg;
1458
1459 if (ifname_bsd_to_linux_ifp(ifp, ifname, sizeof(ifname)) <= 0)
1460 return (ENODEV);
1461
1462 sbuf_printf(sb, "%6.6s: ", ifname);
1463 sbuf_printf(sb, "%7ju %7ju %4ju %4ju %4lu %5lu %10lu %9ju ",
1464 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IBYTES),
1465 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IPACKETS),
1466 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IERRORS),
1467 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IQDROPS),
1468 /* rx_missed_errors */
1469 0UL, /* rx_fifo_errors */
1470 0UL, /* rx_length_errors +
1471 * rx_over_errors +
1472 * rx_crc_errors +
1473 * rx_frame_errors */
1474 0UL, /* rx_compressed */
1475 (uintmax_t)if_getcounter(ifp, IFCOUNTER_IMCASTS));
1476 /* XXX-BZ rx only? */
1477 sbuf_printf(sb, "%8ju %7ju %4ju %4ju %4lu %5ju %7lu %10lu\n",
1478 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OBYTES),
1479 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OPACKETS),
1480 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OERRORS),
1481 (uintmax_t)if_getcounter(ifp, IFCOUNTER_OQDROPS),
1482 0UL, /* tx_fifo_errors */
1483 (uintmax_t)if_getcounter(ifp, IFCOUNTER_COLLISIONS),
1484 0UL, /* tx_carrier_errors +
1485 * tx_aborted_errors +
1486 * tx_window_errors +
1487 * tx_heartbeat_errors*/
1488 0UL); /* tx_compressed */
1489 return (0);
1490 }
1491
1492 static int
linprocfs_donetdev(PFS_FILL_ARGS)1493 linprocfs_donetdev(PFS_FILL_ARGS)
1494 {
1495 struct epoch_tracker et;
1496
1497 sbuf_printf(sb, "%6s|%58s|%s\n"
1498 "%6s|%58s|%58s\n",
1499 "Inter-", " Receive", " Transmit",
1500 " face",
1501 "bytes packets errs drop fifo frame compressed multicast",
1502 "bytes packets errs drop fifo colls carrier compressed");
1503
1504 CURVNET_SET(TD_TO_VNET(curthread));
1505 NET_EPOCH_ENTER(et);
1506 if_foreach(linprocfs_donetdev_cb, sb);
1507 NET_EPOCH_EXIT(et);
1508 CURVNET_RESTORE();
1509
1510 return (0);
1511 }
1512
1513 struct walkarg {
1514 struct sbuf *sb;
1515 };
1516
1517 static int
linux_route_print(struct rtentry * rt,void * vw)1518 linux_route_print(struct rtentry *rt, void *vw)
1519 {
1520 #ifdef INET
1521 struct walkarg *w = vw;
1522 struct route_nhop_data rnd;
1523 struct in_addr dst, mask;
1524 struct nhop_object *nh;
1525 char ifname[16];
1526 uint32_t scopeid = 0;
1527 uint32_t gw = 0;
1528 uint32_t linux_flags = 0;
1529
1530 rt_get_inet_prefix_pmask(rt, &dst, &mask, &scopeid);
1531
1532 rt_get_rnd(rt, &rnd);
1533
1534 /* select only first route in case of multipath */
1535 nh = nhop_select_func(rnd.rnd_nhop, 0);
1536
1537 if (ifname_bsd_to_linux_ifp(nh->nh_ifp, ifname, sizeof(ifname)) <= 0)
1538 return (ENODEV);
1539
1540 gw = (nh->nh_flags & NHF_GATEWAY)
1541 ? nh->gw4_sa.sin_addr.s_addr : 0;
1542
1543 linux_flags = RTF_UP |
1544 (nhop_get_rtflags(nh) & (RTF_GATEWAY | RTF_HOST));
1545
1546 sbuf_printf(w->sb,
1547 "%s\t"
1548 "%08X\t%08X\t%04X\t"
1549 "%d\t%u\t%d\t"
1550 "%08X\t%d\t%u\t%u",
1551 ifname,
1552 dst.s_addr, gw, linux_flags,
1553 0, 0, rnd.rnd_weight,
1554 mask.s_addr, nh->nh_mtu, 0, 0);
1555
1556 sbuf_printf(w->sb, "\n\n");
1557 #endif
1558 return (0);
1559 }
1560
1561 /*
1562 * Filler function for proc/net/route
1563 */
1564 static int
linprocfs_donetroute(PFS_FILL_ARGS)1565 linprocfs_donetroute(PFS_FILL_ARGS)
1566 {
1567 struct epoch_tracker et;
1568 struct walkarg w = {
1569 .sb = sb
1570 };
1571 uint32_t fibnum = curthread->td_proc->p_fibnum;
1572
1573 sbuf_printf(w.sb, "%-127s\n", "Iface\tDestination\tGateway "
1574 "\tFlags\tRefCnt\tUse\tMetric\tMask\t\tMTU"
1575 "\tWindow\tIRTT");
1576
1577 CURVNET_SET(TD_TO_VNET(curthread));
1578 NET_EPOCH_ENTER(et);
1579 rib_walk(fibnum, AF_INET, false, linux_route_print, &w);
1580 NET_EPOCH_EXIT(et);
1581 CURVNET_RESTORE();
1582
1583 return (0);
1584 }
1585
1586 /*
1587 * Filler function for proc/sys/kernel/osrelease
1588 */
1589 static int
linprocfs_doosrelease(PFS_FILL_ARGS)1590 linprocfs_doosrelease(PFS_FILL_ARGS)
1591 {
1592 char osrelease[LINUX_MAX_UTSNAME];
1593
1594 linux_get_osrelease(td, osrelease);
1595 sbuf_printf(sb, "%s\n", osrelease);
1596
1597 return (0);
1598 }
1599
1600 /*
1601 * Filler function for proc/sys/kernel/ostype
1602 */
1603 static int
linprocfs_doostype(PFS_FILL_ARGS)1604 linprocfs_doostype(PFS_FILL_ARGS)
1605 {
1606 char osname[LINUX_MAX_UTSNAME];
1607
1608 linux_get_osname(td, osname);
1609 sbuf_printf(sb, "%s\n", osname);
1610
1611 return (0);
1612 }
1613
1614 /*
1615 * Filler function for proc/sys/kernel/version
1616 */
1617 static int
linprocfs_doosbuild(PFS_FILL_ARGS)1618 linprocfs_doosbuild(PFS_FILL_ARGS)
1619 {
1620
1621 linprocfs_osbuild(td, sb);
1622 sbuf_cat(sb, "\n");
1623 return (0);
1624 }
1625
1626 /*
1627 * Filler function for proc/sys/kernel/msgmax
1628 */
1629 static int
linprocfs_domsgmax(PFS_FILL_ARGS)1630 linprocfs_domsgmax(PFS_FILL_ARGS)
1631 {
1632
1633 sbuf_printf(sb, "%d\n", msginfo.msgmax);
1634 return (0);
1635 }
1636
1637 /*
1638 * Filler function for proc/sys/kernel/msgmni
1639 */
1640 static int
linprocfs_domsgmni(PFS_FILL_ARGS)1641 linprocfs_domsgmni(PFS_FILL_ARGS)
1642 {
1643
1644 sbuf_printf(sb, "%d\n", msginfo.msgmni);
1645 return (0);
1646 }
1647
1648 /*
1649 * Filler function for proc/sys/kernel/msgmnb
1650 */
1651 static int
linprocfs_domsgmnb(PFS_FILL_ARGS)1652 linprocfs_domsgmnb(PFS_FILL_ARGS)
1653 {
1654
1655 sbuf_printf(sb, "%d\n", msginfo.msgmnb);
1656 return (0);
1657 }
1658
1659 /*
1660 * Filler function for proc/sys/kernel/ngroups_max
1661 *
1662 * Note that in Linux it defaults to 65536, not 1023.
1663 */
1664 static int
linprocfs_dongroups_max(PFS_FILL_ARGS)1665 linprocfs_dongroups_max(PFS_FILL_ARGS)
1666 {
1667
1668 sbuf_printf(sb, "%d\n", ngroups_max);
1669 return (0);
1670 }
1671
1672 /*
1673 * Filler function for proc/sys/kernel/pid_max
1674 */
1675 static int
linprocfs_dopid_max(PFS_FILL_ARGS)1676 linprocfs_dopid_max(PFS_FILL_ARGS)
1677 {
1678
1679 sbuf_printf(sb, "%i\n", PID_MAX);
1680 return (0);
1681 }
1682
1683 /*
1684 * Filler function for proc/sys/kernel/sem
1685 */
1686 static int
linprocfs_dosem(PFS_FILL_ARGS)1687 linprocfs_dosem(PFS_FILL_ARGS)
1688 {
1689
1690 sbuf_printf(sb, "%d %d %d %d\n", seminfo.semmsl, seminfo.semmns,
1691 seminfo.semopm, seminfo.semmni);
1692 return (0);
1693 }
1694
1695 /*
1696 * Filler function for proc/sys/kernel/shmall
1697 */
1698 static int
linprocfs_doshmall(PFS_FILL_ARGS)1699 linprocfs_doshmall(PFS_FILL_ARGS)
1700 {
1701
1702 sbuf_printf(sb, "%lu\n", shminfo.shmall);
1703 return (0);
1704 }
1705
1706 /*
1707 * Filler function for proc/sys/kernel/shmmax
1708 */
1709 static int
linprocfs_doshmmax(PFS_FILL_ARGS)1710 linprocfs_doshmmax(PFS_FILL_ARGS)
1711 {
1712
1713 sbuf_printf(sb, "%lu\n", shminfo.shmmax);
1714 return (0);
1715 }
1716
1717 /*
1718 * Filler function for proc/sys/kernel/shmmni
1719 */
1720 static int
linprocfs_doshmmni(PFS_FILL_ARGS)1721 linprocfs_doshmmni(PFS_FILL_ARGS)
1722 {
1723
1724 sbuf_printf(sb, "%lu\n", shminfo.shmmni);
1725 return (0);
1726 }
1727
1728 /*
1729 * Filler function for proc/sys/kernel/tainted
1730 */
1731 static int
linprocfs_dotainted(PFS_FILL_ARGS)1732 linprocfs_dotainted(PFS_FILL_ARGS)
1733 {
1734
1735 sbuf_printf(sb, "0\n");
1736 return (0);
1737 }
1738
1739 /*
1740 * Filler function for proc/sys/kernel/threads-max
1741 */
1742 static int
linprocfs_dothreads_max(PFS_FILL_ARGS)1743 linprocfs_dothreads_max(PFS_FILL_ARGS)
1744 {
1745 int res, error;
1746 size_t size = sizeof(res);
1747
1748 error = kernel_sysctlbyname(curthread, "kern.maxproc",
1749 &res, &size, NULL, 0, 0, 0);
1750 if (error != 0)
1751 return (error);
1752 sbuf_printf(sb, "%d\n", res);
1753 return (0);
1754 }
1755
1756 /*
1757 * Filler function for proc/sys/vm/min_free_kbytes
1758 *
1759 * This mirrors the approach in illumos to return zero for reads. Effectively,
1760 * it says, no memory is kept in reserve for "atomic allocations". This class
1761 * of allocation can be used at times when a thread cannot be suspended.
1762 */
1763 static int
linprocfs_dominfree(PFS_FILL_ARGS)1764 linprocfs_dominfree(PFS_FILL_ARGS)
1765 {
1766
1767 sbuf_printf(sb, "%d\n", 0);
1768 return (0);
1769 }
1770
1771 /*
1772 * Filler function for proc/scsi/device_info
1773 */
1774 static int
linprocfs_doscsidevinfo(PFS_FILL_ARGS)1775 linprocfs_doscsidevinfo(PFS_FILL_ARGS)
1776 {
1777
1778 return (0);
1779 }
1780
1781 /*
1782 * Filler function for proc/scsi/scsi
1783 */
1784 static int
linprocfs_doscsiscsi(PFS_FILL_ARGS)1785 linprocfs_doscsiscsi(PFS_FILL_ARGS)
1786 {
1787
1788 return (0);
1789 }
1790
1791 /*
1792 * Filler function for proc/devices
1793 */
1794 static int
linprocfs_dodevices(PFS_FILL_ARGS)1795 linprocfs_dodevices(PFS_FILL_ARGS)
1796 {
1797 char *char_devices;
1798 sbuf_printf(sb, "Character devices:\n");
1799
1800 char_devices = linux_get_char_devices();
1801 sbuf_printf(sb, "%s", char_devices);
1802 linux_free_get_char_devices(char_devices);
1803
1804 sbuf_printf(sb, "\nBlock devices:\n");
1805
1806 return (0);
1807 }
1808
1809 /*
1810 * Filler function for proc/cmdline
1811 */
1812 static int
linprocfs_docmdline(PFS_FILL_ARGS)1813 linprocfs_docmdline(PFS_FILL_ARGS)
1814 {
1815
1816 sbuf_printf(sb, "BOOT_IMAGE=%s", kernelname);
1817 sbuf_printf(sb, " ro root=302\n");
1818 return (0);
1819 }
1820
1821 /*
1822 * Filler function for proc/filesystems
1823 */
1824 static int
linprocfs_dofilesystems(PFS_FILL_ARGS)1825 linprocfs_dofilesystems(PFS_FILL_ARGS)
1826 {
1827 struct vfsconf *vfsp;
1828
1829 vfsconf_slock();
1830 TAILQ_FOREACH(vfsp, &vfsconf, vfc_list) {
1831 if (vfsp->vfc_flags & VFCF_SYNTHETIC)
1832 sbuf_printf(sb, "nodev");
1833 sbuf_printf(sb, "\t%s\n", vfsp->vfc_name);
1834 }
1835 vfsconf_sunlock();
1836 return(0);
1837 }
1838
1839 /*
1840 * Filler function for proc/modules
1841 */
1842 static int
linprocfs_domodules(PFS_FILL_ARGS)1843 linprocfs_domodules(PFS_FILL_ARGS)
1844 {
1845 #if 0
1846 struct linker_file *lf;
1847
1848 TAILQ_FOREACH(lf, &linker_files, link) {
1849 sbuf_printf(sb, "%-20s%8lu%4d\n", lf->filename,
1850 (unsigned long)lf->size, lf->refs);
1851 }
1852 #endif
1853 return (0);
1854 }
1855
1856 /*
1857 * Filler function for proc/pid/fd
1858 */
1859 static int
linprocfs_dofdescfs(PFS_FILL_ARGS)1860 linprocfs_dofdescfs(PFS_FILL_ARGS)
1861 {
1862
1863 if (p == curproc)
1864 sbuf_printf(sb, "/dev/fd");
1865 else
1866 sbuf_printf(sb, "unknown");
1867 return (0);
1868 }
1869
1870 /*
1871 * Filler function for proc/pid/limits
1872 */
1873 static const struct linux_rlimit_ident {
1874 const char *desc;
1875 const char *unit;
1876 unsigned int rlim_id;
1877 } linux_rlimits_ident[] = {
1878 { "Max cpu time", "seconds", RLIMIT_CPU },
1879 { "Max file size", "bytes", RLIMIT_FSIZE },
1880 { "Max data size", "bytes", RLIMIT_DATA },
1881 { "Max stack size", "bytes", RLIMIT_STACK },
1882 { "Max core file size", "bytes", RLIMIT_CORE },
1883 { "Max resident set", "bytes", RLIMIT_RSS },
1884 { "Max processes", "processes", RLIMIT_NPROC },
1885 { "Max open files", "files", RLIMIT_NOFILE },
1886 { "Max locked memory", "bytes", RLIMIT_MEMLOCK },
1887 { "Max address space", "bytes", RLIMIT_AS },
1888 { "Max file locks", "locks", LINUX_RLIMIT_LOCKS },
1889 { "Max pending signals", "signals", LINUX_RLIMIT_SIGPENDING },
1890 { "Max msgqueue size", "bytes", LINUX_RLIMIT_MSGQUEUE },
1891 { "Max nice priority", "", LINUX_RLIMIT_NICE },
1892 { "Max realtime priority", "", LINUX_RLIMIT_RTPRIO },
1893 { "Max realtime timeout", "us", LINUX_RLIMIT_RTTIME },
1894 { 0, 0, 0 }
1895 };
1896
1897 static int
linprocfs_doproclimits(PFS_FILL_ARGS)1898 linprocfs_doproclimits(PFS_FILL_ARGS)
1899 {
1900 const struct linux_rlimit_ident *li;
1901 struct plimit *limp;
1902 struct rlimit rl;
1903 ssize_t size;
1904 int res, error;
1905
1906 error = 0;
1907
1908 PROC_LOCK(p);
1909 limp = lim_hold(p->p_limit);
1910 PROC_UNLOCK(p);
1911 size = sizeof(res);
1912 sbuf_printf(sb, "%-26s%-21s%-21s%-21s\n", "Limit", "Soft Limit",
1913 "Hard Limit", "Units");
1914 for (li = linux_rlimits_ident; li->desc != NULL; ++li) {
1915 switch (li->rlim_id)
1916 {
1917 case LINUX_RLIMIT_LOCKS:
1918 /* FALLTHROUGH */
1919 case LINUX_RLIMIT_RTTIME:
1920 rl.rlim_cur = RLIM_INFINITY;
1921 break;
1922 case LINUX_RLIMIT_SIGPENDING:
1923 error = kernel_sysctlbyname(td,
1924 "kern.sigqueue.max_pending_per_proc",
1925 &res, &size, 0, 0, 0, 0);
1926 if (error != 0)
1927 continue;
1928 rl.rlim_cur = res;
1929 rl.rlim_max = res;
1930 break;
1931 case LINUX_RLIMIT_MSGQUEUE:
1932 error = kernel_sysctlbyname(td,
1933 "kern.ipc.msgmnb", &res, &size, 0, 0, 0, 0);
1934 if (error != 0)
1935 continue;
1936 rl.rlim_cur = res;
1937 rl.rlim_max = res;
1938 break;
1939 case LINUX_RLIMIT_NICE:
1940 /* FALLTHROUGH */
1941 case LINUX_RLIMIT_RTPRIO:
1942 rl.rlim_cur = 0;
1943 rl.rlim_max = 0;
1944 break;
1945 default:
1946 rl = limp->pl_rlimit[li->rlim_id];
1947 break;
1948 }
1949 if (rl.rlim_cur == RLIM_INFINITY)
1950 sbuf_printf(sb, "%-26s%-21s%-21s%-10s\n",
1951 li->desc, "unlimited", "unlimited", li->unit);
1952 else
1953 sbuf_printf(sb, "%-26s%-21llu%-21llu%-10s\n",
1954 li->desc, (unsigned long long)rl.rlim_cur,
1955 (unsigned long long)rl.rlim_max, li->unit);
1956 }
1957
1958 lim_free(limp);
1959 return (0);
1960 }
1961
1962 /*
1963 * The point of the following two functions is to work around
1964 * an assertion in Chromium; see kern/240991 for details.
1965 */
1966 static int
linprocfs_dotaskattr(PFS_ATTR_ARGS)1967 linprocfs_dotaskattr(PFS_ATTR_ARGS)
1968 {
1969
1970 vap->va_nlink = 3;
1971 return (0);
1972 }
1973
1974 /*
1975 * Filler function for proc/<pid>/task/.dummy
1976 */
1977 static int
linprocfs_dotaskdummy(PFS_FILL_ARGS)1978 linprocfs_dotaskdummy(PFS_FILL_ARGS)
1979 {
1980
1981 return (0);
1982 }
1983
1984 /*
1985 * Filler function for proc/sys/kernel/random/uuid
1986 */
1987 static int
linprocfs_douuid(PFS_FILL_ARGS)1988 linprocfs_douuid(PFS_FILL_ARGS)
1989 {
1990 struct uuid uuid;
1991
1992 kern_uuidgen(&uuid, 1);
1993 sbuf_printf_uuid(sb, &uuid);
1994 sbuf_printf(sb, "\n");
1995 return(0);
1996 }
1997
1998 /*
1999 * Filler function for proc/sys/kernel/random/boot_id
2000 */
2001 static int
linprocfs_doboot_id(PFS_FILL_ARGS)2002 linprocfs_doboot_id(PFS_FILL_ARGS)
2003 {
2004 static bool firstboot = 1;
2005 static struct uuid uuid;
2006
2007 if (firstboot) {
2008 kern_uuidgen(&uuid, 1);
2009 firstboot = 0;
2010 }
2011 sbuf_printf_uuid(sb, &uuid);
2012 sbuf_printf(sb, "\n");
2013 return(0);
2014 }
2015
2016 /*
2017 * Filler function for proc/pid/auxv
2018 */
2019 static int
linprocfs_doauxv(PFS_FILL_ARGS)2020 linprocfs_doauxv(PFS_FILL_ARGS)
2021 {
2022 struct sbuf *asb;
2023 off_t buflen, resid;
2024 int error;
2025
2026 /*
2027 * Mimic linux behavior and pass only processes with usermode
2028 * address space as valid. Return zero silently otherwise.
2029 */
2030 if (p->p_vmspace == &vmspace0)
2031 return (0);
2032
2033 if (uio->uio_resid == 0)
2034 return (0);
2035 if (uio->uio_offset < 0 || uio->uio_resid < 0)
2036 return (EINVAL);
2037
2038 asb = sbuf_new_auto();
2039 if (asb == NULL)
2040 return (ENOMEM);
2041 error = proc_getauxv(td, p, asb);
2042 if (error != 0)
2043 goto out;
2044 error = sbuf_finish(asb);
2045 if (error != 0)
2046 goto out;
2047
2048 resid = sbuf_len(asb) - uio->uio_offset;
2049 if (resid > uio->uio_resid)
2050 buflen = uio->uio_resid;
2051 else
2052 buflen = resid;
2053 if (buflen > IOSIZE_MAX) {
2054 error = EINVAL;
2055 goto out;
2056 }
2057 if (buflen > maxphys)
2058 buflen = maxphys;
2059 if (resid > 0)
2060 error = uiomove(sbuf_data(asb) + uio->uio_offset, buflen, uio);
2061 out:
2062 sbuf_delete(asb);
2063 return (error);
2064 }
2065
2066 /*
2067 * Filler function for proc/self/oom_score_adj
2068 */
2069 static int
linprocfs_do_oom_score_adj(PFS_FILL_ARGS)2070 linprocfs_do_oom_score_adj(PFS_FILL_ARGS)
2071 {
2072 struct linux_pemuldata *pem;
2073 long oom;
2074
2075 pem = pem_find(p);
2076 if (pem == NULL || uio == NULL)
2077 return (EOPNOTSUPP);
2078 if (uio->uio_rw == UIO_READ) {
2079 sbuf_printf(sb, "%d\n", pem->oom_score_adj);
2080 } else {
2081 sbuf_trim(sb);
2082 sbuf_finish(sb);
2083 oom = strtol(sbuf_data(sb), NULL, 10);
2084 if (oom < LINUX_OOM_SCORE_ADJ_MIN ||
2085 oom > LINUX_OOM_SCORE_ADJ_MAX)
2086 return (EINVAL);
2087 pem->oom_score_adj = oom;
2088 }
2089 return (0);
2090 }
2091
2092 /*
2093 * Filler function for proc/sys/vm/max_map_count
2094 *
2095 * Maximum number of active map areas, on Linux this limits the number
2096 * of vmaps per mm struct. We don't limit mappings, return a suitable
2097 * large value.
2098 */
2099 static int
linprocfs_domax_map_cnt(PFS_FILL_ARGS)2100 linprocfs_domax_map_cnt(PFS_FILL_ARGS)
2101 {
2102
2103 sbuf_printf(sb, "%d\n", INT32_MAX);
2104 return (0);
2105 }
2106
2107 /*
2108 * Filler function for proc/sysvipc/msg
2109 */
2110 static int
linprocfs_dosysvipc_msg(PFS_FILL_ARGS)2111 linprocfs_dosysvipc_msg(PFS_FILL_ARGS)
2112 {
2113 struct msqid_kernel *msqids;
2114 size_t id, size;
2115 int error;
2116
2117 sbuf_printf(sb,
2118 "%10s %10s %4s %10s %10s %5s %5s %5s %5s %5s %5s %10s %10s %10s\n",
2119 "key", "msqid", "perms", "cbytes", "qnum", "lspid", "lrpid",
2120 "uid", "gid", "cuid", "cgid", "stime", "rtime", "ctime");
2121
2122 error = kern_get_msqids(curthread, &msqids, &size);
2123 if (error != 0)
2124 return (error);
2125
2126 for (id = 0; id < size; id++) {
2127 if (msqids[id].u.msg_qbytes == 0)
2128 continue;
2129 sbuf_printf(sb,
2130 "%10d %10zu %4o %10lu %10lu %5u %5u %5u %5u %5u %5u %jd %jd %jd\n",
2131 (int)msqids[id].u.msg_perm.key,
2132 IXSEQ_TO_IPCID(id, msqids[id].u.msg_perm),
2133 msqids[id].u.msg_perm.mode,
2134 msqids[id].u.msg_cbytes,
2135 msqids[id].u.msg_qnum,
2136 msqids[id].u.msg_lspid,
2137 msqids[id].u.msg_lrpid,
2138 msqids[id].u.msg_perm.uid,
2139 msqids[id].u.msg_perm.gid,
2140 msqids[id].u.msg_perm.cuid,
2141 msqids[id].u.msg_perm.cgid,
2142 (intmax_t)msqids[id].u.msg_stime,
2143 (intmax_t)msqids[id].u.msg_rtime,
2144 (intmax_t)msqids[id].u.msg_ctime);
2145 }
2146
2147 free(msqids, M_TEMP);
2148 return (0);
2149 }
2150
2151 /*
2152 * Filler function for proc/sysvipc/sem
2153 */
2154 static int
linprocfs_dosysvipc_sem(PFS_FILL_ARGS)2155 linprocfs_dosysvipc_sem(PFS_FILL_ARGS)
2156 {
2157 struct semid_kernel *semids;
2158 size_t id, size;
2159 int error;
2160
2161 sbuf_printf(sb, "%10s %10s %4s %10s %5s %5s %5s %5s %10s %10s\n",
2162 "key", "semid", "perms", "nsems", "uid", "gid", "cuid", "cgid",
2163 "otime", "ctime");
2164
2165 error = kern_get_sema(curthread, &semids, &size);
2166 if (error != 0)
2167 return (error);
2168
2169 for (id = 0; id < size; id++) {
2170 if ((semids[id].u.sem_perm.mode & SEM_ALLOC) == 0)
2171 continue;
2172 sbuf_printf(sb,
2173 "%10d %10zu %4o %10u %5u %5u %5u %5u %jd %jd\n",
2174 (int)semids[id].u.sem_perm.key,
2175 IXSEQ_TO_IPCID(id, semids[id].u.sem_perm),
2176 semids[id].u.sem_perm.mode,
2177 semids[id].u.sem_nsems,
2178 semids[id].u.sem_perm.uid,
2179 semids[id].u.sem_perm.gid,
2180 semids[id].u.sem_perm.cuid,
2181 semids[id].u.sem_perm.cgid,
2182 (intmax_t)semids[id].u.sem_otime,
2183 (intmax_t)semids[id].u.sem_ctime);
2184 }
2185
2186 free(semids, M_TEMP);
2187 return (0);
2188 }
2189
2190 /*
2191 * Filler function for proc/sysvipc/shm
2192 */
2193 static int
linprocfs_dosysvipc_shm(PFS_FILL_ARGS)2194 linprocfs_dosysvipc_shm(PFS_FILL_ARGS)
2195 {
2196 struct shmid_kernel *shmids;
2197 size_t id, size;
2198 int error;
2199
2200 sbuf_printf(sb,
2201 "%10s %10s %s %21s %5s %5s %5s %5s %5s %5s %5s %10s %10s %10s %21s %21s\n",
2202 "key", "shmid", "perms", "size", "cpid", "lpid", "nattch", "uid",
2203 "gid", "cuid", "cgid", "atime", "dtime", "ctime", "rss", "swap");
2204
2205 error = kern_get_shmsegs(curthread, &shmids, &size);
2206 if (error != 0)
2207 return (error);
2208
2209 for (id = 0; id < size; id++) {
2210 if ((shmids[id].u.shm_perm.mode & SHMSEG_ALLOCATED) == 0)
2211 continue;
2212 sbuf_printf(sb,
2213 "%10d %10zu %4o %21zu %5u %5u %5u %5u %5u %5u %5u %jd %jd %jd %21d %21d\n",
2214 (int)shmids[id].u.shm_perm.key,
2215 IXSEQ_TO_IPCID(id, shmids[id].u.shm_perm),
2216 shmids[id].u.shm_perm.mode,
2217 shmids[id].u.shm_segsz,
2218 shmids[id].u.shm_cpid,
2219 shmids[id].u.shm_lpid,
2220 shmids[id].u.shm_nattch,
2221 shmids[id].u.shm_perm.uid,
2222 shmids[id].u.shm_perm.gid,
2223 shmids[id].u.shm_perm.cuid,
2224 shmids[id].u.shm_perm.cgid,
2225 (intmax_t)shmids[id].u.shm_atime,
2226 (intmax_t)shmids[id].u.shm_dtime,
2227 (intmax_t)shmids[id].u.shm_ctime,
2228 0, 0); /* XXX rss & swp are not supported */
2229 }
2230
2231 free(shmids, M_TEMP);
2232 return (0);
2233 }
2234
2235 /*
2236 * Filler function for proc/sys/fs/file-max
2237 */
2238 static int
linprocfs_dofile_max(PFS_FILL_ARGS)2239 linprocfs_dofile_max(PFS_FILL_ARGS)
2240 {
2241 int res, error;
2242 size_t size = sizeof(res);
2243
2244 error = kernel_sysctlbyname(curthread, "kern.maxfiles",
2245 &res, &size, NULL, 0, 0, 0);
2246 if (error != 0)
2247 return (error);
2248 sbuf_printf(sb, "%d\n", res);
2249 return (0);
2250 }
2251
2252 /*
2253 * Filler function for proc/sys/fs/file-nr
2254 */
2255 static int
linprocfs_dofile_nr(PFS_FILL_ARGS)2256 linprocfs_dofile_nr(PFS_FILL_ARGS)
2257 {
2258 int openfiles, maxfiles, error;
2259 size_t size;
2260
2261 size = sizeof(openfiles);
2262 error = kernel_sysctlbyname(curthread, "kern.openfiles",
2263 &openfiles, &size, NULL, 0, 0, 0);
2264 if (error != 0)
2265 return (error);
2266 size = sizeof(maxfiles);
2267 error = kernel_sysctlbyname(curthread, "kern.maxfiles",
2268 &maxfiles, &size, NULL, 0, 0, 0);
2269 if (error != 0)
2270 return (error);
2271 /*
2272 * From Linux's proc_sys_fs(5):
2273 * the "free file handles" value is always zero.
2274 */
2275 sbuf_printf(sb, "%d\t0\t%d\n", openfiles, maxfiles);
2276 return (0);
2277 }
2278
2279 /*
2280 * Filler function for proc/sys/fs/nr_open
2281 */
2282 static int
linprocfs_donr_open(PFS_FILL_ARGS)2283 linprocfs_donr_open(PFS_FILL_ARGS)
2284 {
2285 int res, error;
2286 size_t size = sizeof(res);
2287
2288 error = kernel_sysctlbyname(curthread, "kern.maxfilesperproc",
2289 &res, &size, NULL, 0, 0, 0);
2290 if (error != 0)
2291 return (error);
2292 sbuf_printf(sb, "%d\n", res);
2293 return (0);
2294 }
2295
2296 /*
2297 * Filler function for proc/sys/fs/overflowuid
2298 */
2299 static int
linprocfs_dooverflowuid(PFS_FILL_ARGS)2300 linprocfs_dooverflowuid(PFS_FILL_ARGS)
2301 {
2302 sbuf_printf(sb, "%u\n", UID_NOBODY);
2303 return (0);
2304 }
2305
2306 /*
2307 * Filler function for proc/sys/fs/overflowgid
2308 */
2309 static int
linprocfs_dooverflowgid(PFS_FILL_ARGS)2310 linprocfs_dooverflowgid(PFS_FILL_ARGS)
2311 {
2312 sbuf_printf(sb, "%u\n", GID_NOGROUP);
2313 return (0);
2314 }
2315
2316 /*
2317 * Filler function for proc/sys/fs/suid_dumpable
2318 */
2319 static int
linprocfs_dosuid_dumpable(PFS_FILL_ARGS)2320 linprocfs_dosuid_dumpable(PFS_FILL_ARGS)
2321 {
2322 int res, error;
2323 size_t size = sizeof(res);
2324
2325 error = kernel_sysctlbyname(curthread, "kern.sugid_coredump",
2326 &res, &size, NULL, 0, 0, 0);
2327 if (error != 0)
2328 return (error);
2329 sbuf_printf(sb, "%d\n", res ? 1 : 0);
2330 return (0);
2331 }
2332
2333 /*
2334 * Filler function for proc/sys/fs/protected_hardlinks
2335 */
2336 static int
linprocfs_doprotected_hardlinks(PFS_FILL_ARGS)2337 linprocfs_doprotected_hardlinks(PFS_FILL_ARGS)
2338 {
2339 int res, error;
2340 size_t size = sizeof(res);
2341
2342 error = kernel_sysctlbyname(curthread,
2343 "security.bsd.hardlink_check_uid",
2344 &res, &size, NULL, 0, 0, 0);
2345 if (error != 0)
2346 return (error);
2347 sbuf_printf(sb, "%d\n", res ? 1 : 0);
2348 return (0);
2349 }
2350
2351 static int
linprocfs_doinotify(const char * sysctl,PFS_FILL_ARGS)2352 linprocfs_doinotify(const char *sysctl, PFS_FILL_ARGS)
2353 {
2354 size_t size;
2355 int error, val;
2356
2357 if (uio->uio_rw == UIO_READ) {
2358 size = sizeof(val);
2359 error = kernel_sysctlbyname(curthread,
2360 __DECONST(void *, sysctl), &val, &size, NULL, 0, 0, 0);
2361 if (error == 0)
2362 sbuf_printf(sb, "%d\n", val);
2363 } else {
2364 char *endp, *newval;
2365 long vall;
2366
2367 sbuf_trim(sb);
2368 sbuf_finish(sb);
2369 newval = sbuf_data(sb);
2370 vall = strtol(newval, &endp, 10);
2371 if (vall < 0 || vall > INT_MAX || endp == newval ||
2372 *endp != '\0')
2373 return (EINVAL);
2374 val = (int)vall;
2375 error = kernel_sysctlbyname(curthread,
2376 __DECONST(void *, sysctl), NULL, NULL,
2377 &val, sizeof(val), 0, 0);
2378 }
2379 return (error);
2380 }
2381
2382 /*
2383 * Filler function for proc/sys/fs/inotify/max_queued_events
2384 */
2385 static int
linprocfs_doinotify_max_queued_events(PFS_FILL_ARGS)2386 linprocfs_doinotify_max_queued_events(PFS_FILL_ARGS)
2387 {
2388 return (linprocfs_doinotify("vfs.inotify.max_queued_events",
2389 PFS_FILL_ARGNAMES));
2390 }
2391
2392 /*
2393 * Filler function for proc/sys/fs/inotify/max_user_instances
2394 */
2395 static int
linprocfs_doinotify_max_user_instances(PFS_FILL_ARGS)2396 linprocfs_doinotify_max_user_instances(PFS_FILL_ARGS)
2397 {
2398 return (linprocfs_doinotify("vfs.inotify.max_user_instances",
2399 PFS_FILL_ARGNAMES));
2400 }
2401
2402 /*
2403 * Filler function for proc/sys/fs/inotify/max_user_watches
2404 */
2405 static int
linprocfs_doinotify_max_user_watches(PFS_FILL_ARGS)2406 linprocfs_doinotify_max_user_watches(PFS_FILL_ARGS)
2407 {
2408 return (linprocfs_doinotify("vfs.inotify.max_user_watches",
2409 PFS_FILL_ARGNAMES));
2410 }
2411
2412 /*
2413 * Filler function for proc/sys/fs/mqueue/msg_default
2414 */
2415 static int
linprocfs_domqueue_msg_default(PFS_FILL_ARGS)2416 linprocfs_domqueue_msg_default(PFS_FILL_ARGS)
2417 {
2418 int res, error;
2419 size_t size = sizeof(res);
2420
2421 error = kernel_sysctlbyname(curthread, "kern.mqueue.default_maxmsg",
2422 &res, &size, NULL, 0, 0, 0);
2423 if (error != 0)
2424 return (error);
2425
2426 sbuf_printf(sb, "%d\n", res);
2427 return (0);
2428 }
2429
2430 /*
2431 * Filler function for proc/sys/fs/mqueue/msgsize_default
2432 */
2433 static int
linprocfs_domqueue_msgsize_default(PFS_FILL_ARGS)2434 linprocfs_domqueue_msgsize_default(PFS_FILL_ARGS)
2435 {
2436 int res, error;
2437 size_t size = sizeof(res);
2438
2439 error = kernel_sysctlbyname(curthread, "kern.mqueue.default_msgsize",
2440 &res, &size, NULL, 0, 0, 0);
2441 if (error != 0)
2442 return (error);
2443
2444 sbuf_printf(sb, "%d\n", res);
2445 return (0);
2446
2447 }
2448
2449 /*
2450 * Filler function for proc/sys/fs/mqueue/msg_max
2451 */
2452 static int
linprocfs_domqueue_msg_max(PFS_FILL_ARGS)2453 linprocfs_domqueue_msg_max(PFS_FILL_ARGS)
2454 {
2455 int res, error;
2456 size_t size = sizeof(res);
2457
2458 error = kernel_sysctlbyname(curthread, "kern.mqueue.maxmsg",
2459 &res, &size, NULL, 0, 0, 0);
2460 if (error != 0)
2461 return (error);
2462
2463 sbuf_printf(sb, "%d\n", res);
2464 return (0);
2465 }
2466
2467 /*
2468 * Filler function for proc/sys/fs/mqueue/msgsize_max
2469 */
2470 static int
linprocfs_domqueue_msgsize_max(PFS_FILL_ARGS)2471 linprocfs_domqueue_msgsize_max(PFS_FILL_ARGS)
2472 {
2473 int res, error;
2474 size_t size = sizeof(res);
2475
2476 error = kernel_sysctlbyname(curthread, "kern.mqueue.maxmsgsize",
2477 &res, &size, NULL, 0, 0, 0);
2478 if (error != 0)
2479 return (error);
2480
2481 sbuf_printf(sb, "%d\n", res);
2482 return (0);
2483 }
2484
2485 /*
2486 * Filler function for proc/sys/fs/mqueue/queues_max
2487 */
2488 static int
linprocfs_domqueue_queues_max(PFS_FILL_ARGS)2489 linprocfs_domqueue_queues_max(PFS_FILL_ARGS)
2490 {
2491 int res, error;
2492 size_t size = sizeof(res);
2493
2494 error = kernel_sysctlbyname(curthread, "kern.mqueue.maxmq",
2495 &res, &size, NULL, 0, 0, 0);
2496 if (error != 0)
2497 return (error);
2498
2499 sbuf_printf(sb, "%d\n", res);
2500 return (0);
2501 }
2502
2503 /*
2504 * Constructor
2505 */
2506 static int
linprocfs_init(PFS_INIT_ARGS)2507 linprocfs_init(PFS_INIT_ARGS)
2508 {
2509 struct pfs_node *dir, *fs, *root, *sys;
2510
2511 root = pi->pi_root;
2512
2513 /* /proc/... */
2514 pfs_create_file(root, NULL, "cmdline", &linprocfs_docmdline, NULL, NULL,
2515 NULL, PFS_RD);
2516 pfs_create_file(root, NULL, "cpuinfo", &linprocfs_docpuinfo, NULL, NULL,
2517 NULL, PFS_RD);
2518 pfs_create_file(root, NULL, "devices", &linprocfs_dodevices, NULL, NULL,
2519 NULL, PFS_RD);
2520 pfs_create_file(root, NULL, "filesystems", &linprocfs_dofilesystems,
2521 NULL, NULL, NULL, PFS_RD);
2522 pfs_create_file(root, NULL, "loadavg", &linprocfs_doloadavg, NULL, NULL,
2523 NULL, PFS_RD);
2524 pfs_create_file(root, NULL, "meminfo", &linprocfs_domeminfo, NULL, NULL,
2525 NULL, PFS_RD);
2526 pfs_create_file(root, NULL, "modules", &linprocfs_domodules, NULL, NULL,
2527 NULL, PFS_RD);
2528 pfs_create_file(root, NULL, "mounts", &linprocfs_domtab, NULL, NULL,
2529 NULL, PFS_RD);
2530 pfs_create_file(root, NULL, "mtab", &linprocfs_domtab, NULL, NULL, NULL,
2531 PFS_RD);
2532 pfs_create_file(root, NULL, "partitions", &linprocfs_dopartitions, NULL,
2533 NULL, NULL, PFS_RD);
2534 pfs_create_link(root, NULL, "self", &procfs_docurproc, NULL, NULL, NULL,
2535 0);
2536 pfs_create_file(root, NULL, "stat", &linprocfs_dostat, NULL, NULL, NULL,
2537 PFS_RD);
2538 pfs_create_file(root, NULL, "swaps", &linprocfs_doswaps, NULL, NULL,
2539 NULL, PFS_RD);
2540 pfs_create_file(root, NULL, "uptime", &linprocfs_douptime, NULL, NULL,
2541 NULL, PFS_RD);
2542 pfs_create_file(root, NULL, "version", &linprocfs_doversion, NULL, NULL,
2543 NULL, PFS_RD);
2544
2545 /* /proc/bus/... */
2546 pfs_create_dir(root, &dir, "bus", NULL, NULL, NULL, 0);
2547 pfs_create_dir(dir, &dir, "pci", NULL, NULL, NULL, 0);
2548 pfs_create_dir(dir, &dir, "devices", NULL, NULL, NULL, 0);
2549
2550 /* /proc/net/... */
2551 pfs_create_dir(root, &dir, "net", NULL, NULL, NULL, 0);
2552 pfs_create_file(dir, NULL, "dev", &linprocfs_donetdev, NULL, NULL, NULL,
2553 PFS_RD);
2554 pfs_create_file(dir, NULL, "route", &linprocfs_donetroute, NULL, NULL,
2555 NULL, PFS_RD);
2556
2557 /* /proc/<pid>/... */
2558 pfs_create_dir(root, &dir, "pid", NULL, NULL, NULL, PFS_PROCDEP);
2559 pfs_create_file(dir, NULL, "cmdline", &linprocfs_doproccmdline, NULL,
2560 NULL, NULL, PFS_RD);
2561 pfs_create_link(dir, NULL, "cwd", &linprocfs_doproccwd, NULL, NULL,
2562 NULL, 0);
2563 pfs_create_file(dir, NULL, "environ", &linprocfs_doprocenviron, NULL,
2564 &procfs_candebug, NULL, PFS_RD);
2565 pfs_create_link(dir, NULL, "exe", &procfs_doprocfile, NULL,
2566 &procfs_notsystem, NULL, 0);
2567 pfs_create_file(dir, NULL, "maps", &linprocfs_doprocmaps, NULL, NULL,
2568 NULL, PFS_RD | PFS_AUTODRAIN);
2569 pfs_create_file(dir, NULL, "mem", &linprocfs_doprocmem, procfs_attr_rw,
2570 &procfs_candebug, NULL, PFS_RDWR | PFS_RAW);
2571 pfs_create_file(dir, NULL, "mountinfo", &linprocfs_doprocmountinfo,
2572 NULL, NULL, NULL, PFS_RD);
2573 pfs_create_file(dir, NULL, "mounts", &linprocfs_domtab, NULL, NULL,
2574 NULL, PFS_RD);
2575 pfs_create_link(dir, NULL, "root", &linprocfs_doprocroot, NULL, NULL,
2576 NULL, 0);
2577 pfs_create_file(dir, NULL, "stat", &linprocfs_doprocstat, NULL, NULL,
2578 NULL, PFS_RD);
2579 pfs_create_file(dir, NULL, "statm", &linprocfs_doprocstatm, NULL, NULL,
2580 NULL, PFS_RD);
2581 pfs_create_file(dir, NULL, "status", &linprocfs_doprocstatus, NULL,
2582 NULL, NULL, PFS_RD);
2583 pfs_create_link(dir, NULL, "fd", &linprocfs_dofdescfs, NULL, NULL, NULL,
2584 0);
2585 pfs_create_file(dir, NULL, "auxv", &linprocfs_doauxv, NULL,
2586 &procfs_candebug, NULL, PFS_RD | PFS_RAWRD);
2587 pfs_create_file(dir, NULL, "limits", &linprocfs_doproclimits, NULL,
2588 NULL, NULL, PFS_RD);
2589 pfs_create_file(dir, NULL, "oom_score_adj", &linprocfs_do_oom_score_adj,
2590 procfs_attr_rw, &procfs_candebug, NULL, PFS_RDWR);
2591
2592 /* /proc/<pid>/task/... */
2593 pfs_create_dir(dir, &dir, "task", linprocfs_dotaskattr, NULL, NULL, 0);
2594 pfs_create_file(dir, NULL, ".dummy", &linprocfs_dotaskdummy, NULL, NULL,
2595 NULL, PFS_RD);
2596
2597 /* /proc/scsi/... */
2598 pfs_create_dir(root, &dir, "scsi", NULL, NULL, NULL, 0);
2599 pfs_create_file(dir, NULL, "device_info", &linprocfs_doscsidevinfo,
2600 NULL, NULL, NULL, PFS_RD);
2601 pfs_create_file(dir, NULL, "scsi", &linprocfs_doscsiscsi, NULL, NULL,
2602 NULL, PFS_RD);
2603
2604 /* /proc/sys/... */
2605 pfs_create_dir(root, &sys, "sys", NULL, NULL, NULL, 0);
2606
2607 /* /proc/sys/kernel/... */
2608 pfs_create_dir(sys, &dir, "kernel", NULL, NULL, NULL, 0);
2609 pfs_create_file(dir, NULL, "osrelease", &linprocfs_doosrelease, NULL,
2610 NULL, NULL, PFS_RD);
2611 pfs_create_file(dir, NULL, "ostype", &linprocfs_doostype, NULL, NULL,
2612 NULL, PFS_RD);
2613 pfs_create_file(dir, NULL, "version", &linprocfs_doosbuild, NULL, NULL,
2614 NULL, PFS_RD);
2615 pfs_create_file(dir, NULL, "msgmax", &linprocfs_domsgmax, NULL, NULL,
2616 NULL, PFS_RD);
2617 pfs_create_file(dir, NULL, "msgmni", &linprocfs_domsgmni, NULL, NULL,
2618 NULL, PFS_RD);
2619 pfs_create_file(dir, NULL, "msgmnb", &linprocfs_domsgmnb, NULL, NULL,
2620 NULL, PFS_RD);
2621 pfs_create_file(dir, NULL, "ngroups_max", &linprocfs_dongroups_max,
2622 NULL, NULL, NULL, PFS_RD);
2623 pfs_create_file(dir, NULL, "pid_max", &linprocfs_dopid_max, NULL, NULL,
2624 NULL, PFS_RD);
2625 pfs_create_file(dir, NULL, "sem", &linprocfs_dosem, NULL, NULL, NULL,
2626 PFS_RD);
2627 pfs_create_file(dir, NULL, "shmall", &linprocfs_doshmall, NULL, NULL,
2628 NULL, PFS_RD);
2629 pfs_create_file(dir, NULL, "shmmax", &linprocfs_doshmmax, NULL, NULL,
2630 NULL, PFS_RD);
2631 pfs_create_file(dir, NULL, "shmmni", &linprocfs_doshmmni, NULL, NULL,
2632 NULL, PFS_RD);
2633 pfs_create_file(dir, NULL, "tainted", &linprocfs_dotainted, NULL, NULL,
2634 NULL, PFS_RD);
2635 pfs_create_file(dir, NULL, "threads-max", &linprocfs_dothreads_max,
2636 NULL, NULL, NULL, PFS_RD);
2637
2638 /* /proc/sys/kernel/random/... */
2639 pfs_create_dir(dir, &dir, "random", NULL, NULL, NULL, 0);
2640 pfs_create_file(dir, NULL, "uuid", &linprocfs_douuid, NULL, NULL, NULL,
2641 PFS_RD);
2642 pfs_create_file(dir, NULL, "boot_id", &linprocfs_doboot_id, NULL, NULL,
2643 NULL, PFS_RD);
2644
2645 /* /proc/sys/vm/.... */
2646 pfs_create_dir(sys, &dir, "vm", NULL, NULL, NULL, 0);
2647 pfs_create_file(dir, NULL, "min_free_kbytes", &linprocfs_dominfree,
2648 NULL, NULL, NULL, PFS_RD);
2649 pfs_create_file(dir, NULL, "max_map_count", &linprocfs_domax_map_cnt,
2650 NULL, NULL, NULL, PFS_RD);
2651
2652 /* /proc/sysvipc/... */
2653 pfs_create_dir(root, &dir, "sysvipc", NULL, NULL, NULL, 0);
2654 pfs_create_file(dir, NULL, "msg", &linprocfs_dosysvipc_msg, NULL, NULL,
2655 NULL, PFS_RD);
2656 pfs_create_file(dir, NULL, "sem", &linprocfs_dosysvipc_sem, NULL, NULL,
2657 NULL, PFS_RD);
2658 pfs_create_file(dir, NULL, "shm", &linprocfs_dosysvipc_shm, NULL, NULL,
2659 NULL, PFS_RD);
2660
2661 /* /proc/sys/fs/... */
2662 pfs_create_dir(sys, &fs, "fs", NULL, NULL, NULL, 0);
2663
2664 pfs_create_file(fs, NULL, "file-nr", &linprocfs_dofile_nr,
2665 NULL, NULL, NULL, PFS_RD);
2666 pfs_create_file(fs, NULL, "file-max", &linprocfs_dofile_max,
2667 NULL, NULL, NULL, PFS_RD);
2668 pfs_create_file(fs, NULL, "nr_open", &linprocfs_donr_open,
2669 NULL, NULL, NULL, PFS_RD);
2670 pfs_create_file(fs, NULL, "overflowgid", &linprocfs_dooverflowgid,
2671 NULL, NULL, NULL, PFS_RD);
2672 pfs_create_file(fs, NULL, "overflowuid", &linprocfs_dooverflowuid,
2673 NULL, NULL, NULL, PFS_RD);
2674 pfs_create_file(fs, NULL, "protected_hardlinks",
2675 &linprocfs_doprotected_hardlinks, NULL, NULL, NULL, PFS_RD);
2676 pfs_create_file(fs, NULL, "suid_dumpable", &linprocfs_dosuid_dumpable,
2677 NULL, NULL, NULL, PFS_RD);
2678
2679 pfs_create_dir(fs, &dir, "inotify", NULL, NULL, NULL, 0);
2680 pfs_create_file(dir, NULL, "max_queued_events",
2681 &linprocfs_doinotify_max_queued_events, NULL, NULL, NULL, PFS_RDWR);
2682 pfs_create_file(dir, NULL, "max_user_instances",
2683 &linprocfs_doinotify_max_user_instances, NULL, NULL, NULL, PFS_RDWR);
2684 pfs_create_file(dir, NULL, "max_user_watches",
2685 &linprocfs_doinotify_max_user_watches, NULL, NULL, NULL, PFS_RDWR);
2686
2687 /* /proc/sys/fs/mqueue/... */
2688 pfs_create_dir(fs, &dir, "mqueue", NULL, NULL, NULL, 0);
2689 pfs_create_file(dir, NULL, "msg_default",
2690 &linprocfs_domqueue_msg_default, NULL, NULL, NULL, PFS_RD);
2691 pfs_create_file(dir, NULL, "msgsize_default",
2692 &linprocfs_domqueue_msgsize_default, NULL, NULL, NULL, PFS_RD);
2693 pfs_create_file(dir, NULL, "msg_max", &linprocfs_domqueue_msg_max, NULL,
2694 NULL, NULL, PFS_RD);
2695 pfs_create_file(dir, NULL, "msgsize_max",
2696 &linprocfs_domqueue_msgsize_max, NULL, NULL, NULL, PFS_RD);
2697 pfs_create_file(dir, NULL, "queues_max", &linprocfs_domqueue_queues_max,
2698 NULL, NULL, NULL, PFS_RD);
2699
2700 return (0);
2701 }
2702
2703 /*
2704 * Destructor
2705 */
2706 static int
linprocfs_uninit(PFS_INIT_ARGS)2707 linprocfs_uninit(PFS_INIT_ARGS)
2708 {
2709
2710 /* nothing to do, pseudofs will GC */
2711 return (0);
2712 }
2713
2714 PSEUDOFS(linprocfs, 1, VFCF_JAIL);
2715 #if defined(__aarch64__) || defined(__amd64__)
2716 MODULE_DEPEND(linprocfs, linux_common, 1, 1, 1);
2717 #else
2718 MODULE_DEPEND(linprocfs, linux, 1, 1, 1);
2719 #endif
2720 MODULE_DEPEND(linprocfs, procfs, 1, 1, 1);
2721 MODULE_DEPEND(linprocfs, sysvmsg, 1, 1, 1);
2722 MODULE_DEPEND(linprocfs, sysvsem, 1, 1, 1);
2723 MODULE_DEPEND(linprocfs, sysvshm, 1, 1, 1);
2724