1 | /* $NetBSD: procfs_linux.c,v 1.72 2016/03/28 17:23:47 mlelstv Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2001 Wasabi Systems, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * Written by Frank van der Linden for Wasabi Systems, Inc. |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions |
11 | * are met: |
12 | * 1. Redistributions of source code must retain the above copyright |
13 | * notice, this list of conditions and the following disclaimer. |
14 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * notice, this list of conditions and the following disclaimer in the |
16 | * documentation and/or other materials provided with the distribution. |
17 | * 3. All advertising materials mentioning features or use of this software |
18 | * must display the following acknowledgement: |
19 | * This product includes software developed for the NetBSD Project by |
20 | * Wasabi Systems, Inc. |
21 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
22 | * or promote products derived from this software without specific prior |
23 | * written permission. |
24 | * |
25 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
27 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
28 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
29 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
35 | * POSSIBILITY OF SUCH DAMAGE. |
36 | */ |
37 | |
38 | #include <sys/cdefs.h> |
39 | __KERNEL_RCSID(0, "$NetBSD: procfs_linux.c,v 1.72 2016/03/28 17:23:47 mlelstv Exp $" ); |
40 | |
41 | #include <sys/param.h> |
42 | #include <sys/systm.h> |
43 | #include <sys/time.h> |
44 | #include <sys/cpu.h> |
45 | #include <sys/kernel.h> |
46 | #include <sys/proc.h> |
47 | #include <sys/vnode.h> |
48 | #include <sys/exec.h> |
49 | #include <sys/resource.h> |
50 | #include <sys/resourcevar.h> |
51 | #include <sys/signal.h> |
52 | #include <sys/signalvar.h> |
53 | #include <sys/tty.h> |
54 | #include <sys/malloc.h> |
55 | #include <sys/mount.h> |
56 | #include <sys/conf.h> |
57 | #include <sys/sysctl.h> |
58 | #include <sys/kauth.h> |
59 | #include <sys/filedesc.h> |
60 | |
61 | #include <miscfs/procfs/procfs.h> |
62 | |
63 | #include <compat/linux/common/linux_exec.h> |
64 | #include <compat/linux32/common/linux32_sysctl.h> |
65 | |
66 | #include <uvm/uvm_extern.h> |
67 | #include <uvm/uvm.h> |
68 | |
69 | extern struct devsw_conv *devsw_conv; |
70 | extern int max_devsw_convs; |
71 | |
72 | #define PGTOB(p) ((unsigned long)(p) << PAGE_SHIFT) |
73 | #define PGTOKB(p) ((unsigned long)(p) << (PAGE_SHIFT - 10)) |
74 | |
75 | #define LBFSZ (8 * 1024) |
76 | |
77 | static void |
78 | get_proc_size_info(struct lwp *l, unsigned long *stext, unsigned long *etext, unsigned long *sstack) |
79 | { |
80 | struct proc *p = l->l_proc; |
81 | struct vmspace *vm; |
82 | struct vm_map *map; |
83 | struct vm_map_entry *entry; |
84 | |
85 | *stext = 0; |
86 | *etext = 0; |
87 | *sstack = 0; |
88 | |
89 | proc_vmspace_getref(p, &vm); |
90 | map = &vm->vm_map; |
91 | vm_map_lock_read(map); |
92 | |
93 | for (entry = map->header.next; entry != &map->header; |
94 | entry = entry->next) { |
95 | if (UVM_ET_ISSUBMAP(entry)) |
96 | continue; |
97 | /* assume text is the first entry */ |
98 | if (*stext == *etext) { |
99 | *stext = entry->start; |
100 | *etext = entry->end; |
101 | break; |
102 | } |
103 | } |
104 | #if defined(LINUX_USRSTACK32) && defined(USRSTACK32) |
105 | if (strcmp(p->p_emul->e_name, "linux32" ) == 0 && |
106 | LINUX_USRSTACK32 < USRSTACK32) |
107 | *sstack = (unsigned long)LINUX_USRSTACK32; |
108 | else |
109 | #endif |
110 | #ifdef LINUX_USRSTACK |
111 | if (strcmp(p->p_emul->e_name, "linux" ) == 0 && |
112 | LINUX_USRSTACK < USRSTACK) |
113 | *sstack = (unsigned long)LINUX_USRSTACK; |
114 | else |
115 | #endif |
116 | #ifdef USRSTACK32 |
117 | if (strstr(p->p_emul->e_name, "32" ) != NULL) |
118 | *sstack = (unsigned long)USRSTACK32; |
119 | else |
120 | #endif |
121 | *sstack = (unsigned long)USRSTACK; |
122 | |
123 | /* |
124 | * jdk 1.6 compares low <= addr && addr < high |
125 | * if we put addr == high, then the test fails |
126 | * so eat one page. |
127 | */ |
128 | *sstack -= PAGE_SIZE; |
129 | |
130 | vm_map_unlock_read(map); |
131 | uvmspace_free(vm); |
132 | } |
133 | |
134 | /* |
135 | * Linux compatible /proc/meminfo. Only active when the -o linux |
136 | * mountflag is used. |
137 | */ |
138 | int |
139 | procfs_domeminfo(struct lwp *curl, struct proc *p, |
140 | struct pfsnode *pfs, struct uio *uio) |
141 | { |
142 | char *bf; |
143 | int len; |
144 | int error = 0; |
145 | |
146 | bf = malloc(LBFSZ, M_TEMP, M_WAITOK); |
147 | |
148 | len = snprintf(bf, LBFSZ, |
149 | " total: used: free: shared: buffers: cached:\n" |
150 | "Mem: %8lu %8lu %8lu %8lu %8lu %8lu\n" |
151 | "Swap: %8lu %8lu %8lu\n" |
152 | "MemTotal: %8lu kB\n" |
153 | "MemFree: %8lu kB\n" |
154 | "MemShared: %8lu kB\n" |
155 | "Buffers: %8lu kB\n" |
156 | "Cached: %8lu kB\n" |
157 | "SwapTotal: %8lu kB\n" |
158 | "SwapFree: %8lu kB\n" , |
159 | PGTOB(uvmexp.npages), |
160 | PGTOB(uvmexp.npages - uvmexp.free), |
161 | PGTOB(uvmexp.free), |
162 | 0L, |
163 | PGTOB(uvmexp.filepages), |
164 | PGTOB(uvmexp.anonpages + uvmexp.filepages + uvmexp.execpages), |
165 | PGTOB(uvmexp.swpages), |
166 | PGTOB(uvmexp.swpginuse), |
167 | PGTOB(uvmexp.swpages - uvmexp.swpginuse), |
168 | PGTOKB(uvmexp.npages), |
169 | PGTOKB(uvmexp.free), |
170 | 0L, |
171 | PGTOKB(uvmexp.filepages), |
172 | PGTOKB(uvmexp.anonpages + uvmexp.filepages + uvmexp.execpages), |
173 | PGTOKB(uvmexp.swpages), |
174 | PGTOKB(uvmexp.swpages - uvmexp.swpginuse)); |
175 | |
176 | if (len == 0) |
177 | goto out; |
178 | |
179 | error = uiomove_frombuf(bf, len, uio); |
180 | out: |
181 | free(bf, M_TEMP); |
182 | return error; |
183 | } |
184 | |
185 | /* |
186 | * Linux compatible /proc/devices. Only active when the -o linux |
187 | * mountflag is used. |
188 | */ |
189 | int |
190 | procfs_dodevices(struct lwp *curl, struct proc *p, |
191 | struct pfsnode *pfs, struct uio *uio) |
192 | { |
193 | char *bf; |
194 | int offset = 0; |
195 | int i, error = ENAMETOOLONG; |
196 | |
197 | /* XXX elad - may need filtering. */ |
198 | |
199 | bf = malloc(LBFSZ, M_TEMP, M_WAITOK); |
200 | |
201 | offset += snprintf(&bf[offset], LBFSZ - offset, "Character devices:\n" ); |
202 | if (offset >= LBFSZ) |
203 | goto out; |
204 | |
205 | mutex_enter(&device_lock); |
206 | for (i = 0; i < max_devsw_convs; i++) { |
207 | if ((devsw_conv[i].d_name == NULL) || |
208 | (devsw_conv[i].d_cmajor == -1)) |
209 | continue; |
210 | |
211 | offset += snprintf(&bf[offset], LBFSZ - offset, |
212 | "%3d %s\n" , devsw_conv[i].d_cmajor, devsw_conv[i].d_name); |
213 | if (offset >= LBFSZ) { |
214 | mutex_exit(&device_lock); |
215 | goto out; |
216 | } |
217 | } |
218 | |
219 | offset += snprintf(&bf[offset], LBFSZ - offset, "\nBlock devices:\n" ); |
220 | if (offset >= LBFSZ) { |
221 | mutex_exit(&device_lock); |
222 | goto out; |
223 | } |
224 | |
225 | for (i = 0; i < max_devsw_convs; i++) { |
226 | if ((devsw_conv[i].d_name == NULL) || |
227 | (devsw_conv[i].d_bmajor == -1)) |
228 | continue; |
229 | |
230 | offset += snprintf(&bf[offset], LBFSZ - offset, |
231 | "%3d %s\n" , devsw_conv[i].d_bmajor, devsw_conv[i].d_name); |
232 | if (offset >= LBFSZ) { |
233 | mutex_exit(&device_lock); |
234 | goto out; |
235 | } |
236 | } |
237 | mutex_exit(&device_lock); |
238 | |
239 | error = uiomove_frombuf(bf, offset, uio); |
240 | out: |
241 | free(bf, M_TEMP); |
242 | return error; |
243 | } |
244 | |
245 | /* |
246 | * Linux compatible /proc/stat. Only active when the -o linux |
247 | * mountflag is used. |
248 | */ |
249 | int |
250 | procfs_docpustat(struct lwp *curl, struct proc *p, |
251 | struct pfsnode *pfs, struct uio *uio) |
252 | { |
253 | char *bf; |
254 | int error; |
255 | int len; |
256 | #if defined(MULTIPROCESSOR) |
257 | struct cpu_info *ci; |
258 | CPU_INFO_ITERATOR cii; |
259 | #endif |
260 | int i; |
261 | uint64_t nintr; |
262 | uint64_t nswtch; |
263 | |
264 | error = ENAMETOOLONG; |
265 | bf = malloc(LBFSZ, M_TEMP, M_WAITOK); |
266 | |
267 | len = snprintf(bf, LBFSZ, |
268 | "cpu %" PRIu64 " %" PRIu64 " %" PRIu64 " %" PRIu64 "\n" , |
269 | curcpu()->ci_schedstate.spc_cp_time[CP_USER], |
270 | curcpu()->ci_schedstate.spc_cp_time[CP_NICE], |
271 | curcpu()->ci_schedstate.spc_cp_time[CP_SYS] /*+ [CP_INTR]*/, |
272 | curcpu()->ci_schedstate.spc_cp_time[CP_IDLE]); |
273 | if (len == 0) |
274 | goto out; |
275 | |
276 | #if defined(MULTIPROCESSOR) |
277 | #define ALLCPUS CPU_INFO_FOREACH(cii, ci) |
278 | #define CPUNAME ci |
279 | #else |
280 | #define ALLCPUS ; i < 1 ; |
281 | #define CPUNAME curcpu() |
282 | #endif |
283 | |
284 | i = 0; |
285 | nintr = 0; |
286 | nswtch = 0; |
287 | for (ALLCPUS) { |
288 | len += snprintf(&bf[len], LBFSZ - len, |
289 | "cpu%d %" PRIu64 " %" PRIu64 " %" PRIu64 " %" PRIu64 |
290 | "\n" , i, |
291 | CPUNAME->ci_schedstate.spc_cp_time[CP_USER], |
292 | CPUNAME->ci_schedstate.spc_cp_time[CP_NICE], |
293 | CPUNAME->ci_schedstate.spc_cp_time[CP_SYS], |
294 | CPUNAME->ci_schedstate.spc_cp_time[CP_IDLE]); |
295 | if (len >= LBFSZ) |
296 | goto out; |
297 | i += 1; |
298 | nintr += CPUNAME->ci_data.cpu_nintr; |
299 | nswtch += CPUNAME->ci_data.cpu_nswtch; |
300 | } |
301 | |
302 | len += snprintf(&bf[len], LBFSZ - len, |
303 | "disk 0 0 0 0\n" |
304 | "page %u %u\n" |
305 | "swap %u %u\n" |
306 | "intr %" PRIu64"\n" |
307 | "ctxt %" PRIu64"\n" |
308 | "btime %" PRId64"\n" , |
309 | uvmexp.pageins, uvmexp.pdpageouts, |
310 | uvmexp.pgswapin, uvmexp.pgswapout, |
311 | nintr, |
312 | nswtch, |
313 | boottime.tv_sec); |
314 | if (len >= LBFSZ) |
315 | goto out; |
316 | |
317 | error = uiomove_frombuf(bf, len, uio); |
318 | out: |
319 | free(bf, M_TEMP); |
320 | return error; |
321 | } |
322 | |
323 | /* |
324 | * Linux compatible /proc/loadavg. Only active when the -o linux |
325 | * mountflag is used. |
326 | */ |
327 | int |
328 | procfs_doloadavg(struct lwp *curl, struct proc *p, |
329 | struct pfsnode *pfs, struct uio *uio) |
330 | { |
331 | char *bf; |
332 | int error; |
333 | int len; |
334 | |
335 | error = ENAMETOOLONG; |
336 | bf = malloc(LBFSZ, M_TEMP, M_WAITOK); |
337 | |
338 | averunnable.fscale = FSCALE; |
339 | len = snprintf(bf, LBFSZ, |
340 | "%d.%02d %d.%02d %d.%02d %d/%d %d\n" , |
341 | (int)(averunnable.ldavg[0] / averunnable.fscale), |
342 | (int)(averunnable.ldavg[0] * 100 / averunnable.fscale % 100), |
343 | (int)(averunnable.ldavg[1] / averunnable.fscale), |
344 | (int)(averunnable.ldavg[1] * 100 / averunnable.fscale % 100), |
345 | (int)(averunnable.ldavg[2] / averunnable.fscale), |
346 | (int)(averunnable.ldavg[2] * 100 / averunnable.fscale % 100), |
347 | 1, /* number of ONPROC processes */ |
348 | nprocs, |
349 | 30000); /* last pid */ |
350 | if (len == 0) |
351 | goto out; |
352 | |
353 | error = uiomove_frombuf(bf, len, uio); |
354 | out: |
355 | free(bf, M_TEMP); |
356 | return error; |
357 | } |
358 | |
359 | /* |
360 | * Linux compatible /proc/<pid>/statm. Only active when the -o linux |
361 | * mountflag is used. |
362 | */ |
363 | int |
364 | procfs_do_pid_statm(struct lwp *curl, struct lwp *l, |
365 | struct pfsnode *pfs, struct uio *uio) |
366 | { |
367 | struct vmspace *vm; |
368 | struct proc *p = l->l_proc; |
369 | char *bf; |
370 | int error; |
371 | int len; |
372 | struct kinfo_proc2 ki; |
373 | |
374 | bf = malloc(LBFSZ, M_TEMP, M_WAITOK); |
375 | |
376 | /* XXX - we use values from vmspace, since dsl says that ru figures |
377 | are always 0 except for zombies. See kvm_proc.c::kvm_getproc2() */ |
378 | if ((error = proc_vmspace_getref(p, &vm)) != 0) { |
379 | goto out; |
380 | } |
381 | |
382 | mutex_enter(proc_lock); |
383 | mutex_enter(p->p_lock); |
384 | |
385 | /* retrieve RSS size */ |
386 | fill_kproc2(p, &ki, false); |
387 | |
388 | mutex_exit(p->p_lock); |
389 | mutex_exit(proc_lock); |
390 | |
391 | uvmspace_free(vm); |
392 | |
393 | len = snprintf(bf, LBFSZ, |
394 | "%lu %lu %lu %lu %lu %lu %lu\n" , |
395 | (unsigned long)(ki.p_vm_msize), /* size */ |
396 | (unsigned long)(ki.p_vm_rssize),/* resident */ |
397 | (unsigned long)(ki.p_uru_ixrss),/* shared */ |
398 | (unsigned long)(ki.p_vm_tsize), /* text */ |
399 | (unsigned long) 0, /* library (unused) */ |
400 | (unsigned long)(ki.p_vm_dsize + ki.p_vm_ssize), /* data+stack */ |
401 | (unsigned long) 0); /* dirty */ |
402 | |
403 | if (len == 0) |
404 | goto out; |
405 | |
406 | error = uiomove_frombuf(bf, len, uio); |
407 | out: |
408 | free(bf, M_TEMP); |
409 | return error; |
410 | } |
411 | |
412 | #define UTIME2TICKS(s,u) (((uint64_t)(s) * 1000000 + (u)) / 10000) |
413 | |
414 | /* |
415 | * Linux compatible /proc/<pid>/stat. Only active when the -o linux |
416 | * mountflag is used. |
417 | */ |
418 | int |
419 | procfs_do_pid_stat(struct lwp *curl, struct lwp *l, |
420 | struct pfsnode *pfs, struct uio *uio) |
421 | { |
422 | char *bf; |
423 | struct proc *p = l->l_proc; |
424 | int len; |
425 | struct rusage *cru = &p->p_stats->p_cru; |
426 | unsigned long stext = 0, etext = 0, sstack = 0; |
427 | struct timeval rt; |
428 | struct vmspace *vm; |
429 | struct kinfo_proc2 ki; |
430 | int error; |
431 | |
432 | bf = malloc(LBFSZ, M_TEMP, M_WAITOK); |
433 | |
434 | if ((error = proc_vmspace_getref(p, &vm)) != 0) { |
435 | goto out; |
436 | } |
437 | |
438 | get_proc_size_info(l, &stext, &etext, &sstack); |
439 | |
440 | mutex_enter(proc_lock); |
441 | mutex_enter(p->p_lock); |
442 | |
443 | fill_kproc2(p, &ki, false); |
444 | calcru(p, NULL, NULL, NULL, &rt); |
445 | |
446 | len = snprintf(bf, LBFSZ, |
447 | "%d (%s) %c %d %d %d %u %d " |
448 | "%u " |
449 | "%" PRIu64" %lu %" PRIu64" %lu %" PRIu64" %" PRIu64" %" PRIu64" %" PRIu64" " |
450 | "%d %d %" PRIu64" " |
451 | "%lld %" PRIu64" %" PRId64" %lu %" PRIu64" " |
452 | "%lu %lu %lu " |
453 | "%u %u " |
454 | "%u %u %u %u " |
455 | "%" PRIu64" %" PRIu64" %" PRIu64" %d %" PRIu64"\n" , |
456 | |
457 | ki.p_pid, /* 1 pid */ |
458 | ki.p_comm, /* 2 tcomm */ |
459 | "0RRSTZXR8" [(ki.p_stat > 8) ? 0 : (int)ki.p_stat], /* 3 state */ |
460 | ki.p_ppid, /* 4 ppid */ |
461 | ki.p__pgid, /* 5 pgrp */ |
462 | ki.p_sid, /* 6 sid */ |
463 | (ki.p_tdev != (uint32_t)NODEV) ? ki.p_tdev : 0, /* 7 tty_nr */ |
464 | ki.p_tpgid, /* 8 tty_pgrp */ |
465 | |
466 | ki.p_flag, /* 9 flags */ |
467 | |
468 | ki.p_uru_minflt, /* 10 min_flt */ |
469 | cru->ru_minflt, |
470 | ki.p_uru_majflt, /* 12 maj_flt */ |
471 | cru->ru_majflt, |
472 | UTIME2TICKS(ki.p_uutime_sec, ki.p_uutime_usec), /* 14 utime */ |
473 | UTIME2TICKS(ki.p_ustime_sec, ki.p_ustime_usec), /* 15 stime */ |
474 | UTIME2TICKS(cru->ru_utime.tv_sec, cru->ru_utime.tv_usec), /* 16 cutime */ |
475 | UTIME2TICKS(cru->ru_stime.tv_sec, cru->ru_stime.tv_usec), /* 17 cstime */ |
476 | |
477 | ki.p_priority, /* XXX: 18 priority */ |
478 | ki.p_nice - NZERO, /* 19 nice */ |
479 | ki.p_nlwps, /* 20 num_threads */ |
480 | |
481 | (long long)rt.tv_sec, |
482 | UTIME2TICKS(ki.p_ustart_sec, ki.p_ustart_usec), /* 22 start_time */ |
483 | ki.p_vm_msize, /* 23 vsize */ |
484 | PGTOKB(ki.p_vm_rssize), /* 24 rss */ |
485 | p->p_rlimit[RLIMIT_RSS].rlim_cur, /* 25 rsslim */ |
486 | |
487 | stext, /* 26 start_code */ |
488 | etext, /* 27 end_code */ |
489 | sstack, /* 28 start_stack */ |
490 | |
491 | 0, /* XXX: 29 esp */ |
492 | 0, /* XXX: 30 eip */ |
493 | |
494 | ki.p_siglist.__bits[0], /* XXX: 31 pending */ |
495 | 0, /* XXX: 32 blocked */ |
496 | ki.p_sigignore.__bits[0], /* 33 sigign */ |
497 | ki.p_sigcatch.__bits[0], /* 34 sigcatch */ |
498 | |
499 | ki.p_wchan, /* 35 wchan */ |
500 | ki.p_uru_nvcsw, |
501 | ki.p_uru_nivcsw, |
502 | ki.p_exitsig, /* 38 exit_signal */ |
503 | ki.p_cpuid); /* 39 task_cpu */ |
504 | |
505 | mutex_exit(p->p_lock); |
506 | mutex_exit(proc_lock); |
507 | |
508 | uvmspace_free(vm); |
509 | |
510 | if (len == 0) |
511 | goto out; |
512 | |
513 | error = uiomove_frombuf(bf, len, uio); |
514 | out: |
515 | free(bf, M_TEMP); |
516 | return error; |
517 | } |
518 | |
519 | int |
520 | procfs_docpuinfo(struct lwp *curl, struct proc *p, |
521 | struct pfsnode *pfs, struct uio *uio) |
522 | { |
523 | size_t len = LBFSZ; |
524 | char *bf = NULL; |
525 | int error; |
526 | |
527 | do { |
528 | if (bf) |
529 | free(bf, M_TEMP); |
530 | bf = malloc(len, M_TEMP, M_WAITOK); |
531 | } while (procfs_getcpuinfstr(bf, &len) < 0); |
532 | |
533 | if (len == 0) { |
534 | error = 0; |
535 | goto done; |
536 | } |
537 | |
538 | error = uiomove_frombuf(bf, len, uio); |
539 | done: |
540 | free(bf, M_TEMP); |
541 | return error; |
542 | } |
543 | |
544 | int |
545 | procfs_douptime(struct lwp *curl, struct proc *p, |
546 | struct pfsnode *pfs, struct uio *uio) |
547 | { |
548 | char *bf; |
549 | int len; |
550 | struct timeval runtime; |
551 | u_int64_t idle; |
552 | int error = 0; |
553 | |
554 | bf = malloc(LBFSZ, M_TEMP, M_WAITOK); |
555 | |
556 | microuptime(&runtime); |
557 | idle = curcpu()->ci_schedstate.spc_cp_time[CP_IDLE]; |
558 | len = snprintf(bf, LBFSZ, |
559 | "%lld.%02lu %" PRIu64 ".%02" PRIu64 "\n" , |
560 | (long long)runtime.tv_sec, (long)runtime.tv_usec / 10000, |
561 | idle / hz, (((idle % hz) * 100) / hz) % 100); |
562 | |
563 | if (len == 0) |
564 | goto out; |
565 | |
566 | error = uiomove_frombuf(bf, len, uio); |
567 | out: |
568 | free(bf, M_TEMP); |
569 | return error; |
570 | } |
571 | |
572 | static int |
573 | procfs_format_sfs(char **mtab, size_t *mlen, char *buf, size_t blen, |
574 | const struct statvfs *sfs, struct lwp *curl, int suser) |
575 | { |
576 | const char *fsname; |
577 | |
578 | /* Linux uses different names for some filesystems */ |
579 | fsname = sfs->f_fstypename; |
580 | if (strcmp(fsname, "procfs" ) == 0) |
581 | fsname = "proc" ; |
582 | else if (strcmp(fsname, "ext2fs" ) == 0) |
583 | fsname = "ext2" ; |
584 | |
585 | blen = snprintf(buf, blen, "%s %s %s %s%s%s%s%s%s 0 0\n" , |
586 | sfs->f_mntfromname, sfs->f_mntonname, fsname, |
587 | (sfs->f_flag & ST_RDONLY) ? "ro" : "rw" , |
588 | (sfs->f_flag & ST_NOSUID) ? ",nosuid" : "" , |
589 | (sfs->f_flag & ST_NOEXEC) ? ",noexec" : "" , |
590 | (sfs->f_flag & ST_NODEV) ? ",nodev" : "" , |
591 | (sfs->f_flag & ST_SYNCHRONOUS) ? ",sync" : "" , |
592 | (sfs->f_flag & ST_NOATIME) ? ",noatime" : "" ); |
593 | |
594 | *mtab = realloc(*mtab, *mlen + blen, M_TEMP, M_WAITOK); |
595 | memcpy(*mtab + *mlen, buf, blen); |
596 | *mlen += blen; |
597 | return sfs->f_mntonname[0] == '/' && sfs->f_mntonname[1] == '\0'; |
598 | } |
599 | |
600 | int |
601 | procfs_domounts(struct lwp *curl, struct proc *p, |
602 | struct pfsnode *pfs, struct uio *uio) |
603 | { |
604 | char *bf, *mtab = NULL; |
605 | size_t mtabsz = 0; |
606 | struct mount *mp, *nmp; |
607 | int error = 0, root = 0; |
608 | struct cwdinfo *cwdi = curl->l_proc->p_cwdi; |
609 | |
610 | bf = malloc(LBFSZ, M_TEMP, M_WAITOK); |
611 | |
612 | mutex_enter(&mountlist_lock); |
613 | for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) { |
614 | struct statvfs sfs; |
615 | |
616 | if (vfs_busy(mp, &nmp)) |
617 | continue; |
618 | |
619 | if ((error = dostatvfs(mp, &sfs, curl, MNT_WAIT, 0)) == 0) |
620 | root |= procfs_format_sfs(&mtab, &mtabsz, bf, LBFSZ, |
621 | &sfs, curl, 0); |
622 | |
623 | vfs_unbusy(mp, false, &nmp); |
624 | } |
625 | mutex_exit(&mountlist_lock); |
626 | |
627 | /* |
628 | * If we are inside a chroot that is not itself a mount point, |
629 | * fake a root entry. |
630 | */ |
631 | if (!root && cwdi->cwdi_rdir) |
632 | (void)procfs_format_sfs(&mtab, &mtabsz, bf, LBFSZ, |
633 | &cwdi->cwdi_rdir->v_mount->mnt_stat, curl, 1); |
634 | |
635 | free(bf, M_TEMP); |
636 | |
637 | if (mtabsz > 0) { |
638 | error = uiomove_frombuf(mtab, mtabsz, uio); |
639 | free(mtab, M_TEMP); |
640 | } |
641 | |
642 | return error; |
643 | } |
644 | |
645 | /* |
646 | * Linux compatible /proc/version. Only active when the -o linux |
647 | * mountflag is used. |
648 | */ |
649 | int |
650 | procfs_doversion(struct lwp *curl, struct proc *p, |
651 | struct pfsnode *pfs, struct uio *uio) |
652 | { |
653 | char *bf; |
654 | char lostype[20], losrelease[20], lversion[80]; |
655 | const char *postype, *posrelease, *pversion; |
656 | const char *emulname = curlwp->l_proc->p_emul->e_name; |
657 | int len; |
658 | int error = 0; |
659 | int nm[4]; |
660 | size_t buflen; |
661 | |
662 | CTASSERT(EMUL_LINUX_KERN_OSTYPE == EMUL_LINUX32_KERN_OSTYPE); |
663 | CTASSERT(EMUL_LINUX_KERN_OSRELEASE == EMUL_LINUX32_KERN_OSRELEASE); |
664 | CTASSERT(EMUL_LINUX_KERN_VERSION == EMUL_LINUX32_KERN_VERSION); |
665 | |
666 | bf = malloc(LBFSZ, M_TEMP, M_WAITOK); |
667 | |
668 | sysctl_lock(false); |
669 | |
670 | if (strncmp(emulname, "linux" , 5) == 0) { |
671 | /* |
672 | * Lookup the emulation ostype, osrelease, and version. |
673 | * Since compat_linux and compat_linux32 can be built as |
674 | * modules, we use sysctl to obtain the values instead of |
675 | * using the symbols directly. |
676 | */ |
677 | |
678 | if (strcmp(emulname, "linux32" ) == 0) { |
679 | nm[0] = CTL_EMUL; |
680 | nm[1] = EMUL_LINUX32; |
681 | nm[2] = EMUL_LINUX32_KERN; |
682 | } else { |
683 | nm[0] = CTL_EMUL; |
684 | nm[1] = EMUL_LINUX; |
685 | nm[2] = EMUL_LINUX_KERN; |
686 | } |
687 | |
688 | nm[3] = EMUL_LINUX_KERN_OSTYPE; |
689 | buflen = sizeof(lostype); |
690 | error = sysctl_dispatch(nm, __arraycount(nm), |
691 | lostype, &buflen, |
692 | NULL, 0, NULL, NULL, NULL); |
693 | if (error) |
694 | goto out; |
695 | |
696 | nm[3] = EMUL_LINUX_KERN_OSRELEASE; |
697 | buflen = sizeof(losrelease); |
698 | error = sysctl_dispatch(nm, __arraycount(nm), |
699 | losrelease, &buflen, |
700 | NULL, 0, NULL, NULL, NULL); |
701 | if (error) |
702 | goto out; |
703 | |
704 | nm[3] = EMUL_LINUX_KERN_VERSION; |
705 | buflen = sizeof(lversion); |
706 | error = sysctl_dispatch(nm, __arraycount(nm), |
707 | lversion, &buflen, |
708 | NULL, 0, NULL, NULL, NULL); |
709 | if (error) |
710 | goto out; |
711 | |
712 | postype = lostype; |
713 | posrelease = losrelease; |
714 | pversion = lversion; |
715 | } else { |
716 | postype = ostype; |
717 | posrelease = osrelease; |
718 | strlcpy(lversion, version, sizeof(lversion)); |
719 | if (strchr(lversion, '\n')) |
720 | *strchr(lversion, '\n') = '\0'; |
721 | pversion = lversion; |
722 | } |
723 | |
724 | len = snprintf(bf, LBFSZ, |
725 | "%s version %s (%s@localhost) (gcc version %s) %s\n" , |
726 | postype, posrelease, emulname, |
727 | #ifdef __VERSION__ |
728 | __VERSION__, |
729 | #else |
730 | "unknown" , |
731 | #endif |
732 | pversion); |
733 | |
734 | if (len == 0) |
735 | goto out; |
736 | |
737 | error = uiomove_frombuf(bf, len, uio); |
738 | out: |
739 | free(bf, M_TEMP); |
740 | sysctl_unlock(); |
741 | return error; |
742 | } |
743 | |