This source file includes following definitions.
- read_core
- read_profile
- write_profile
- get_loadavg
- get_kstat
- get_uptime
- get_meminfo
- get_version
- get_cpuinfo
- get_task
- get_phys_addr
- get_array
- get_env
- get_arg
- get_wchan
- get_stat
- get_statm
- get_maps
- get_root_array
- get_process_array
- fill_array
- array_read
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24 #include <linux/types.h>
25 #include <linux/errno.h>
26 #include <linux/sched.h>
27 #include <linux/kernel.h>
28 #include <linux/kernel_stat.h>
29 #include <linux/tty.h>
30 #include <linux/user.h>
31 #include <linux/a.out.h>
32 #include <linux/string.h>
33 #include <linux/mman.h>
34 #include <linux/proc_fs.h>
35 #include <linux/ioport.h>
36
37 #include <asm/segment.h>
38 #include <asm/io.h>
39
40 #define LOAD_INT(x) ((x) >> FSHIFT)
41 #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
42
43 #ifdef CONFIG_DEBUG_MALLOC
44 int get_malloc(char * buffer);
45 #endif
46
47 static int read_core(struct inode * inode, struct file * file,char * buf, int count)
48 {
49 unsigned long p = file->f_pos;
50 int read;
51 int count1;
52 char * pnt;
53 struct user dump;
54
55 memset(&dump, 0, sizeof(struct user));
56 dump.magic = CMAGIC;
57 dump.u_dsize = high_memory >> 12;
58
59 if (count < 0)
60 return -EINVAL;
61 if (p >= high_memory + PAGE_SIZE)
62 return 0;
63 if (count > high_memory + PAGE_SIZE - p)
64 count = high_memory + PAGE_SIZE - p;
65 read = 0;
66
67 if (p < sizeof(struct user) && count > 0) {
68 count1 = count;
69 if (p + count1 > sizeof(struct user))
70 count1 = sizeof(struct user)-p;
71 pnt = (char *) &dump + p;
72 memcpy_tofs(buf,(void *) pnt, count1);
73 buf += count1;
74 p += count1;
75 count -= count1;
76 read += count1;
77 }
78
79 while (p < 2*PAGE_SIZE && count > 0) {
80 put_fs_byte(0,buf);
81 buf++;
82 p++;
83 count--;
84 read++;
85 }
86 memcpy_tofs(buf,(void *) (p - PAGE_SIZE),count);
87 read += count;
88 file->f_pos += read;
89 return read;
90 }
91
92 static struct file_operations proc_kcore_operations = {
93 NULL,
94 read_core,
95 };
96
97 struct inode_operations proc_kcore_inode_operations = {
98 &proc_kcore_operations,
99 };
100
101 #ifdef CONFIG_PROFILE
102
103 extern unsigned long prof_len;
104 extern unsigned long * prof_buffer;
105
106
107
108
109
110
111 static int read_profile(struct inode *inode, struct file *file, char *buf, int count)
112 {
113 unsigned long p = file->f_pos;
114 int read;
115 char * pnt;
116 unsigned long sample_step = 1 << CONFIG_PROFILE_SHIFT;
117
118 if (count < 0)
119 return -EINVAL;
120 if (p >= (prof_len+1)*sizeof(unsigned long))
121 return 0;
122 if (count > (prof_len+1)*sizeof(unsigned long) - p)
123 count = (prof_len+1)*sizeof(unsigned long) - p;
124 read = 0;
125
126 while (p < sizeof(unsigned long) && count > 0) {
127 put_fs_byte(*((char *)(&sample_step)+p),buf);
128 buf++; p++; count--; read++;
129 }
130 pnt = (char *)prof_buffer + p - sizeof(unsigned long);
131 memcpy_tofs(buf,(void *)pnt,count);
132 read += count;
133 file->f_pos += read;
134 return read;
135 }
136
137
138 static int write_profile(struct inode * inode, struct file * file, char * buf, int count)
139 {
140 int i=prof_len;
141
142 while (i--)
143 prof_buffer[i]=0UL;
144 return count;
145 }
146
147 static struct file_operations proc_profile_operations = {
148 NULL,
149 read_profile,
150 write_profile,
151 };
152
153 struct inode_operations proc_profile_inode_operations = {
154 &proc_profile_operations,
155 };
156
157 #endif
158
159 static int get_loadavg(char * buffer)
160 {
161 int a, b, c;
162
163 a = avenrun[0] + (FIXED_1/200);
164 b = avenrun[1] + (FIXED_1/200);
165 c = avenrun[2] + (FIXED_1/200);
166 return sprintf(buffer,"%d.%02d %d.%02d %d.%02d\n",
167 LOAD_INT(a), LOAD_FRAC(a),
168 LOAD_INT(b), LOAD_FRAC(b),
169 LOAD_INT(c), LOAD_FRAC(c));
170 }
171
172 static int get_kstat(char * buffer)
173 {
174 int i, len;
175 unsigned sum = 0;
176
177 for (i = 0 ; i < 16 ; i++)
178 sum += kstat.interrupts[i];
179 len = sprintf(buffer,
180 "cpu %u %u %u %lu\n"
181 "disk %u %u %u %u\n"
182 "page %u %u\n"
183 "swap %u %u\n"
184 "intr %u",
185 kstat.cpu_user,
186 kstat.cpu_nice,
187 kstat.cpu_system,
188 jiffies - (kstat.cpu_user + kstat.cpu_nice + kstat.cpu_system),
189 kstat.dk_drive[0],
190 kstat.dk_drive[1],
191 kstat.dk_drive[2],
192 kstat.dk_drive[3],
193 kstat.pgpgin,
194 kstat.pgpgout,
195 kstat.pswpin,
196 kstat.pswpout,
197 sum);
198 for (i = 0 ; i < 16 ; i++)
199 len += sprintf(buffer + len, " %u", kstat.interrupts[i]);
200 len += sprintf(buffer + len,
201 "\nctxt %u\n"
202 "btime %lu\n",
203 kstat.context_swtch,
204 xtime.tv_sec - jiffies / HZ);
205 return len;
206 }
207
208
209 static int get_uptime(char * buffer)
210 {
211 unsigned long uptime;
212 unsigned long idle;
213
214 uptime = jiffies;
215 idle = task[0]->utime + task[0]->stime;
216
217
218
219
220
221
222
223
224
225
226 #if HZ!=100
227 return sprintf(buffer,"%lu.%02lu %lu.%02lu\n",
228 uptime / HZ,
229 (((uptime % HZ) * 100) / HZ) % 100,
230 idle / HZ,
231 (((idle % HZ) * 100) / HZ) % 100);
232 #else
233 return sprintf(buffer,"%lu.%02lu %lu.%02lu\n",
234 uptime / HZ,
235 uptime % HZ,
236 idle / HZ,
237 idle % HZ);
238 #endif
239 }
240
241 static int get_meminfo(char * buffer)
242 {
243 struct sysinfo i;
244
245 si_meminfo(&i);
246 si_swapinfo(&i);
247 return sprintf(buffer, " total: used: free: shared: buffers:\n"
248 "Mem: %8lu %8lu %8lu %8lu %8lu\n"
249 "Swap: %8lu %8lu %8lu\n",
250 i.totalram, i.totalram-i.freeram, i.freeram, i.sharedram, i.bufferram,
251 i.totalswap, i.totalswap-i.freeswap, i.freeswap);
252 }
253
254 static int get_version(char * buffer)
255 {
256 extern char *linux_banner;
257
258 strcpy(buffer, linux_banner);
259 return strlen(buffer);
260 }
261
262 static int get_cpuinfo(char * buffer)
263 {
264 char *model[2][9]={{"DX","SX","DX/2","4","SX/2","6",
265 "7","DX/4"},
266 {"Pentium 60/66","Pentium 90/100","3",
267 "4","5","6","7","8"}};
268 char mask[2];
269 mask[0] = x86_mask+'@';
270 mask[1] = '\0';
271 return sprintf(buffer,"cpu\t\t: %c86\n"
272 "model\t\t: %s\n"
273 "mask\t\t: %s\n"
274 "vid\t\t: %s\n"
275 "fdiv_bug\t: %s\n"
276 "math\t\t: %s\n"
277 "hlt\t\t: %s\n"
278 "wp\t\t: %s\n"
279 "Integrated NPU\t: %s\n"
280 "Enhanced VM86\t: %s\n"
281 "IO Breakpoints\t: %s\n"
282 "4MB Pages\t: %s\n"
283 "TS Counters\t: %s\n"
284 "Pentium MSR\t: %s\n"
285 "Mach. Ch. Exep.\t: %s\n"
286 "CMPXCHGB8B\t: %s\n",
287 x86+'0',
288 x86_model ? model[x86-4][x86_model-1] : "Unknown",
289 x86_mask ? mask : "Unknown",
290 x86_vendor_id,
291 fdiv_bug ? "yes" : "no",
292 hard_math ? "yes" : "no",
293 hlt_works_ok ? "yes" : "no",
294 wp_works_ok ? "yes" : "no",
295 x86_capability & 1 ? "yes" : "no",
296 x86_capability & 2 ? "yes" : "no",
297 x86_capability & 4 ? "yes" : "no",
298 x86_capability & 8 ? "yes" : "no",
299 x86_capability & 16 ? "yes" : "no",
300 x86_capability & 32 ? "yes" : "no",
301 x86_capability & 128 ? "yes" : "no",
302 x86_capability & 256 ? "yes" : "no"
303 );
304 }
305
306 static struct task_struct ** get_task(pid_t pid)
307 {
308 struct task_struct ** p;
309
310 p = task;
311 while (++p < task+NR_TASKS) {
312 if (*p && (*p)->pid == pid)
313 return p;
314 }
315 return NULL;
316 }
317
318 static unsigned long get_phys_addr(struct task_struct ** p, unsigned long ptr)
319 {
320 unsigned long page;
321
322 if (!p || !*p || ptr >= TASK_SIZE)
323 return 0;
324 page = *PAGE_DIR_OFFSET((*p)->tss.cr3,ptr);
325 if (!(page & PAGE_PRESENT))
326 return 0;
327 page &= PAGE_MASK;
328 page += PAGE_PTR(ptr);
329 page = *(unsigned long *) page;
330 if (!(page & PAGE_PRESENT))
331 return 0;
332 page &= PAGE_MASK;
333 page += ptr & ~PAGE_MASK;
334 return page;
335 }
336
337 static int get_array(struct task_struct ** p, unsigned long start, unsigned long end, char * buffer)
338 {
339 unsigned long addr;
340 int size = 0, result = 0;
341 char c;
342
343 if (start >= end)
344 return result;
345 for (;;) {
346 addr = get_phys_addr(p, start);
347 if (!addr)
348 goto ready;
349 do {
350 c = *(char *) addr;
351 if (!c)
352 result = size;
353 if (size < PAGE_SIZE)
354 buffer[size++] = c;
355 else
356 goto ready;
357 addr++;
358 start++;
359 if (!c && start >= end)
360 goto ready;
361 } while (addr & ~PAGE_MASK);
362 }
363 ready:
364
365 while (result>0 && buffer[result-1]==' ')
366 result--;
367 return result;
368 }
369
370 static int get_env(int pid, char * buffer)
371 {
372 struct task_struct ** p = get_task(pid);
373
374 if (!p || !*p)
375 return 0;
376 return get_array(p, (*p)->mm->env_start, (*p)->mm->env_end, buffer);
377 }
378
379 static int get_arg(int pid, char * buffer)
380 {
381 struct task_struct ** p = get_task(pid);
382
383 if (!p || !*p)
384 return 0;
385 return get_array(p, (*p)->mm->arg_start, (*p)->mm->arg_end, buffer);
386 }
387
388 static unsigned long get_wchan(struct task_struct *p)
389 {
390 unsigned long ebp, eip;
391 unsigned long stack_page;
392 int count = 0;
393
394 if (!p || p == current || p->state == TASK_RUNNING)
395 return 0;
396 stack_page = p->kernel_stack_page;
397 if (!stack_page)
398 return 0;
399 ebp = p->tss.ebp;
400 do {
401 if (ebp < stack_page || ebp >= 4092+stack_page)
402 return 0;
403 eip = *(unsigned long *) (ebp+4);
404 if ((void *)eip != sleep_on &&
405 (void *)eip != interruptible_sleep_on)
406 return eip;
407 ebp = *(unsigned long *) ebp;
408 } while (count++ < 16);
409 return 0;
410 }
411
412 #define KSTK_EIP(stack) (((unsigned long *)stack)[1019])
413 #define KSTK_ESP(stack) (((unsigned long *)stack)[1022])
414
415 static int get_stat(int pid, char * buffer)
416 {
417 struct task_struct ** p = get_task(pid);
418 unsigned long sigignore=0, sigcatch=0, bit=1, wchan;
419 unsigned long vsize, eip, esp;
420 int i,tty_pgrp;
421 char state;
422
423 if (!p || !*p)
424 return 0;
425 if ((*p)->state < 0 || (*p)->state > 5)
426 state = '.';
427 else
428 state = "RSDZTD"[(*p)->state];
429 eip = esp = 0;
430 vsize = (*p)->kernel_stack_page;
431 if (vsize) {
432 eip = KSTK_EIP(vsize);
433 esp = KSTK_ESP(vsize);
434 vsize = (*p)->mm->brk - (*p)->mm->start_code + PAGE_SIZE-1;
435 if (esp)
436 vsize += TASK_SIZE - esp;
437 }
438 wchan = get_wchan(*p);
439 for(i=0; i<32; ++i) {
440 switch((int) (*p)->sigaction[i].sa_handler) {
441 case 1: sigignore |= bit; break;
442 case 0: break;
443 default: sigcatch |= bit;
444 } bit <<= 1;
445 }
446 if ((*p)->tty)
447 tty_pgrp = (*p)->tty->pgrp;
448 else
449 tty_pgrp = -1;
450 return sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \
451 %lu %lu %lu %ld %ld %ld %ld %ld %ld %lu %lu %ld %lu %lu %lu %lu %lu %lu %lu %lu %lu \
452 %lu %lu %lu %lu\n",
453 pid,
454 (*p)->comm,
455 state,
456 (*p)->p_pptr->pid,
457 (*p)->pgrp,
458 (*p)->session,
459 (*p)->tty ? (*p)->tty->device : 0,
460 tty_pgrp,
461 (*p)->flags,
462 (*p)->mm->min_flt,
463 (*p)->mm->cmin_flt,
464 (*p)->mm->maj_flt,
465 (*p)->mm->cmaj_flt,
466 (*p)->utime,
467 (*p)->stime,
468 (*p)->cutime,
469 (*p)->cstime,
470 (*p)->counter,
471
472 (*p)->priority,
473
474 (*p)->timeout,
475 (*p)->it_real_value,
476 (*p)->start_time,
477 vsize,
478 (*p)->mm->rss,
479 (*p)->rlim[RLIMIT_RSS].rlim_cur,
480 (*p)->mm->start_code,
481 (*p)->mm->end_code,
482 (*p)->mm->start_stack,
483 esp,
484 eip,
485 (*p)->signal,
486 (*p)->blocked,
487 sigignore,
488 sigcatch,
489 wchan);
490 }
491
492 static int get_statm(int pid, char * buffer)
493 {
494 struct task_struct ** p = get_task(pid);
495 int i, tpag;
496 int size=0, resident=0, share=0, trs=0, lrs=0, drs=0, dt=0;
497 unsigned long ptbl, *buf, *pte, *pagedir, map_nr;
498
499 if (!p || !*p)
500 return 0;
501 tpag = (*p)->mm->end_code / PAGE_SIZE;
502 if ((*p)->state != TASK_ZOMBIE) {
503 pagedir = (unsigned long *) (*p)->tss.cr3;
504 for (i = 0; i < 0x300; ++i) {
505 if ((ptbl = pagedir[i]) == 0) {
506 tpag -= PTRS_PER_PAGE;
507 continue;
508 }
509 buf = (unsigned long *)(ptbl & PAGE_MASK);
510 for (pte = buf; pte < (buf + PTRS_PER_PAGE); ++pte) {
511 if (*pte != 0) {
512 ++size;
513 if (*pte & 1) {
514 ++resident;
515 if (tpag > 0)
516 ++trs;
517 else
518 ++drs;
519 if (i >= 15 && i < 0x2f0) {
520 ++lrs;
521 if (*pte & 0x40)
522 ++dt;
523 else
524 --drs;
525 }
526 map_nr = MAP_NR(*pte);
527 if (map_nr < (high_memory / PAGE_SIZE) && mem_map[map_nr] > 1)
528 ++share;
529 }
530 }
531 --tpag;
532 }
533 }
534 }
535 return sprintf(buffer,"%d %d %d %d %d %d %d\n",
536 size, resident, share, trs, lrs, drs, dt);
537 }
538
539 static int get_maps(int pid, char *buf)
540 {
541 int sz = 0;
542 struct task_struct **p = get_task(pid);
543 struct vm_area_struct *map;
544
545 if (!p || !*p)
546 return 0;
547
548 for(map = (*p)->mm->mmap; map != NULL; map = map->vm_next) {
549 char str[7], *cp = str;
550 int flags;
551 int end = sz + 80;
552 dev_t dev;
553 unsigned long ino;
554
555 flags = map->vm_flags;
556
557 *cp++ = flags & VM_READ ? 'r' : '-';
558 *cp++ = flags & VM_WRITE ? 'w' : '-';
559 *cp++ = flags & VM_EXEC ? 'x' : '-';
560 *cp++ = flags & VM_SHARED ? 's' : 'p';
561 *cp++ = 0;
562
563 if (end >= PAGE_SIZE) {
564 sprintf(buf+sz, "...\n");
565 break;
566 }
567
568 if (map->vm_inode != NULL) {
569 dev = map->vm_inode->i_dev;
570 ino = map->vm_inode->i_ino;
571 } else {
572 dev = 0;
573 ino = 0;
574 }
575
576 sz += sprintf(buf+sz, "%08lx-%08lx %s %08lx %02x:%02x %lu\n",
577 map->vm_start, map->vm_end, str, map->vm_offset,
578 MAJOR(dev),MINOR(dev), ino);
579 if (sz > end) {
580 printk("get_maps: end(%d) < sz(%d)\n", end, sz);
581 break;
582 }
583 }
584
585 return sz;
586 }
587
588 extern int get_module_list(char *);
589 extern int get_device_list(char *);
590 extern int get_filesystem_list(char *);
591 extern int get_ksyms_list(char *);
592 extern int get_irq_list(char *);
593 extern int get_dma_list(char *);
594 extern int get_cpuinfo(char *);
595
596 static int get_root_array(char * page, int type)
597 {
598 switch (type) {
599 case PROC_LOADAVG:
600 return get_loadavg(page);
601
602 case PROC_UPTIME:
603 return get_uptime(page);
604
605 case PROC_MEMINFO:
606 return get_meminfo(page);
607
608 case PROC_CPUINFO:
609 return get_cpuinfo(page);
610
611 case PROC_VERSION:
612 return get_version(page);
613
614 #ifdef CONFIG_DEBUG_MALLOC
615 case PROC_MALLOC:
616 return get_malloc(page);
617 #endif
618
619 case PROC_MODULES:
620 return get_module_list(page);
621
622 case PROC_STAT:
623 return get_kstat(page);
624
625 case PROC_DEVICES:
626 return get_device_list(page);
627
628 case PROC_INTERRUPTS:
629 return get_irq_list(page);
630
631 case PROC_FILESYSTEMS:
632 return get_filesystem_list(page);
633
634 case PROC_KSYMS:
635 return get_ksyms_list(page);
636
637 case PROC_DMA:
638 return get_dma_list(page);
639
640 case PROC_IOPORTS:
641 return get_ioport_list(page);
642 }
643 return -EBADF;
644 }
645
646 static int get_process_array(char * page, int pid, int type)
647 {
648 switch (type) {
649 case PROC_PID_ENVIRON:
650 return get_env(pid, page);
651 case PROC_PID_CMDLINE:
652 return get_arg(pid, page);
653 case PROC_PID_STAT:
654 return get_stat(pid, page);
655 case PROC_PID_STATM:
656 return get_statm(pid, page);
657 case PROC_PID_MAPS:
658 return get_maps(pid, page);
659 }
660 return -EBADF;
661 }
662
663
664 static inline int fill_array(char * page, int pid, int type)
665 {
666 if (pid)
667 return get_process_array(page, pid, type);
668 return get_root_array(page, type);
669 }
670
671 static int array_read(struct inode * inode, struct file * file,char * buf, int count)
672 {
673 unsigned long page;
674 int length;
675 int end;
676 unsigned int type, pid;
677
678 if (count < 0)
679 return -EINVAL;
680 if (!(page = __get_free_page(GFP_KERNEL)))
681 return -ENOMEM;
682 type = inode->i_ino;
683 pid = type >> 16;
684 type &= 0x0000ffff;
685 length = fill_array((char *) page, pid, type);
686 if (length < 0) {
687 free_page(page);
688 return length;
689 }
690 if (file->f_pos >= length) {
691 free_page(page);
692 return 0;
693 }
694 if (count + file->f_pos > length)
695 count = length - file->f_pos;
696 end = count + file->f_pos;
697 memcpy_tofs(buf, (char *) page + file->f_pos, count);
698 free_page(page);
699 file->f_pos = end;
700 return count;
701 }
702
703 static struct file_operations proc_array_operations = {
704 NULL,
705 array_read,
706 NULL,
707 NULL,
708 NULL,
709 NULL,
710 NULL,
711 NULL,
712 NULL,
713 NULL
714 };
715
716 struct inode_operations proc_array_inode_operations = {
717 &proc_array_operations,
718 NULL,
719 NULL,
720 NULL,
721 NULL,
722 NULL,
723 NULL,
724 NULL,
725 NULL,
726 NULL,
727 NULL,
728 NULL,
729 NULL,
730 NULL,
731 NULL
732 };