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 return sprintf(buffer,"%lu.%02lu %lu.%02lu\n",
217 uptime / HZ,
218 uptime % HZ,
219 idle / HZ,
220 idle % HZ);
221 }
222
223 static int get_meminfo(char * buffer)
224 {
225 struct sysinfo i;
226
227 si_meminfo(&i);
228 si_swapinfo(&i);
229 return sprintf(buffer, " total: used: free: shared: buffers:\n"
230 "Mem: %8lu %8lu %8lu %8lu %8lu\n"
231 "Swap: %8lu %8lu %8lu\n",
232 i.totalram, i.totalram-i.freeram, i.freeram, i.sharedram, i.bufferram,
233 i.totalswap, i.totalswap-i.freeswap, i.freeswap);
234 }
235
236 static int get_version(char * buffer)
237 {
238 extern char *linux_banner;
239
240 strcpy(buffer, linux_banner);
241 return strlen(buffer);
242 }
243
244 static int get_cpuinfo(char * buffer)
245 {
246
247
248 char *yes="yes";
249 char *no="no";
250 char *model[2][9]={{"DX","SX","DX/2","4","SX/2","6",
251 "7","DX/4"},
252 {"Pentium 60/66","Pentium 90/100","3",
253 "4","5","6","7","8"}};
254 return sprintf(buffer,"cpu\t\t: %c86\n"
255 "model\t\t: %s\n"
256 "mask\t\t: %c\n"
257 "vid\t\t: %s\n"
258 "fdiv_bug\t: %s\n"
259 "math\t\t: %s\n"
260 "hlt\t\t: %s\n"
261 "wp\t\t: %s\n"
262 "Integrated NPU\t: %s\n"
263 "Enhanced VM86\t: %s\n"
264 "IO Breakpoints\t: %s\n"
265 "4MB Pages\t: %s\n"
266 "TS Counters\t: %s\n"
267 "Pentium MSR\t: %s\n"
268 "Mach. Ch. Exep.\t: %s\n"
269 "CMPXCHGB8B\t: %s\n",
270 x86+'0',
271 x86_model ? model[x86-4][x86_model-1] : "Unknown",
272 x86_mask+'@',
273 x86_vendor_id,
274 fdiv_bug ? yes : no,
275 hard_math ? yes : no,
276 hlt_works_ok ? yes : no,
277 wp_works_ok ? yes : no,
278 x86_capability & 1 ? yes : no,
279 x86_capability & 2 ? yes : no,
280 x86_capability & 4 ? yes : no,
281 x86_capability & 8 ? yes : no,
282 x86_capability & 16 ? yes : no,
283 x86_capability & 32 ? yes : no,
284 x86_capability & 128 ? yes : no,
285 x86_capability & 256 ? yes : no
286 );
287 }
288
289 static struct task_struct ** get_task(pid_t pid)
290 {
291 struct task_struct ** p;
292
293 p = task;
294 while (++p < task+NR_TASKS) {
295 if (*p && (*p)->pid == pid)
296 return p;
297 }
298 return NULL;
299 }
300
301 static unsigned long get_phys_addr(struct task_struct ** p, unsigned long ptr)
302 {
303 unsigned long page;
304
305 if (!p || !*p || ptr >= TASK_SIZE)
306 return 0;
307 page = *PAGE_DIR_OFFSET((*p)->tss.cr3,ptr);
308 if (!(page & PAGE_PRESENT))
309 return 0;
310 page &= PAGE_MASK;
311 page += PAGE_PTR(ptr);
312 page = *(unsigned long *) page;
313 if (!(page & PAGE_PRESENT))
314 return 0;
315 page &= PAGE_MASK;
316 page += ptr & ~PAGE_MASK;
317 return page;
318 }
319
320 static int get_array(struct task_struct ** p, unsigned long start, unsigned long end, char * buffer)
321 {
322 unsigned long addr;
323 int size = 0, result = 0;
324 char c;
325
326 if (start >= end)
327 return result;
328 for (;;) {
329 addr = get_phys_addr(p, start);
330 if (!addr)
331 goto ready;
332 do {
333 c = *(char *) addr;
334 if (!c)
335 result = size;
336 if (size < PAGE_SIZE)
337 buffer[size++] = c;
338 else
339 goto ready;
340 addr++;
341 start++;
342 if (!c && start >= end)
343 goto ready;
344 } while (addr & ~PAGE_MASK);
345 }
346 ready:
347
348 while (result>0 && buffer[result-1]==' ')
349 result--;
350 return result;
351 }
352
353 static int get_env(int pid, char * buffer)
354 {
355 struct task_struct ** p = get_task(pid);
356
357 if (!p || !*p)
358 return 0;
359 return get_array(p, (*p)->mm->env_start, (*p)->mm->env_end, buffer);
360 }
361
362 static int get_arg(int pid, char * buffer)
363 {
364 struct task_struct ** p = get_task(pid);
365
366 if (!p || !*p)
367 return 0;
368 return get_array(p, (*p)->mm->arg_start, (*p)->mm->arg_end, buffer);
369 }
370
371 static unsigned long get_wchan(struct task_struct *p)
372 {
373 unsigned long ebp, eip;
374 unsigned long stack_page;
375 int count = 0;
376
377 if (!p || p == current || p->state == TASK_RUNNING)
378 return 0;
379 stack_page = p->kernel_stack_page;
380 if (!stack_page)
381 return 0;
382 ebp = p->tss.ebp;
383 do {
384 if (ebp < stack_page || ebp >= 4092+stack_page)
385 return 0;
386 eip = *(unsigned long *) (ebp+4);
387 if ((void *)eip != sleep_on &&
388 (void *)eip != interruptible_sleep_on)
389 return eip;
390 ebp = *(unsigned long *) ebp;
391 } while (count++ < 16);
392 return 0;
393 }
394
395 #define KSTK_EIP(stack) (((unsigned long *)stack)[1019])
396 #define KSTK_ESP(stack) (((unsigned long *)stack)[1022])
397
398 static int get_stat(int pid, char * buffer)
399 {
400 struct task_struct ** p = get_task(pid);
401 unsigned long sigignore=0, sigcatch=0, bit=1, wchan;
402 unsigned long vsize, eip, esp;
403 int i,tty_pgrp;
404 char state;
405
406 if (!p || !*p)
407 return 0;
408 if ((*p)->state < 0 || (*p)->state > 5)
409 state = '.';
410 else
411 state = "RSDZTD"[(*p)->state];
412 eip = esp = 0;
413 vsize = (*p)->kernel_stack_page;
414 if (vsize) {
415 eip = KSTK_EIP(vsize);
416 esp = KSTK_ESP(vsize);
417 vsize = (*p)->mm->brk - (*p)->mm->start_code + PAGE_SIZE-1;
418 if (esp)
419 vsize += TASK_SIZE - esp;
420 }
421 wchan = get_wchan(*p);
422 for(i=0; i<32; ++i) {
423 switch((int) (*p)->sigaction[i].sa_handler) {
424 case 1: sigignore |= bit; break;
425 case 0: break;
426 default: sigcatch |= bit;
427 } bit <<= 1;
428 }
429 if ((*p)->tty)
430 tty_pgrp = (*p)->tty->pgrp;
431 else
432 tty_pgrp = -1;
433 return sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \
434 %lu %lu %lu %ld %ld %ld %ld %ld %ld %lu %lu %ld %lu %lu %u %lu %lu %lu %lu %lu %lu \
435 %lu %lu %lu %lu\n",
436 pid,
437 (*p)->comm,
438 state,
439 (*p)->p_pptr->pid,
440 (*p)->pgrp,
441 (*p)->session,
442 (*p)->tty ? (*p)->tty->device : 0,
443 tty_pgrp,
444 (*p)->flags,
445 (*p)->mm->min_flt,
446 (*p)->mm->cmin_flt,
447 (*p)->mm->maj_flt,
448 (*p)->mm->cmaj_flt,
449 (*p)->utime,
450 (*p)->stime,
451 (*p)->cutime,
452 (*p)->cstime,
453 (*p)->counter,
454
455 (*p)->priority,
456
457 (*p)->timeout,
458 (*p)->it_real_value,
459 (*p)->start_time,
460 vsize,
461 (*p)->mm->rss,
462 (*p)->rlim[RLIMIT_RSS].rlim_cur,
463 (*p)->mm->start_code,
464 (*p)->mm->end_code,
465 (*p)->mm->start_stack,
466 esp,
467 eip,
468 (*p)->signal,
469 (*p)->blocked,
470 sigignore,
471 sigcatch,
472 wchan);
473 }
474
475 static int get_statm(int pid, char * buffer)
476 {
477 struct task_struct ** p = get_task(pid);
478 int i, tpag;
479 int size=0, resident=0, share=0, trs=0, lrs=0, drs=0, dt=0;
480 unsigned long ptbl, *buf, *pte, *pagedir, map_nr;
481
482 if (!p || !*p)
483 return 0;
484 tpag = (*p)->mm->end_code / PAGE_SIZE;
485 if ((*p)->state != TASK_ZOMBIE) {
486 pagedir = (unsigned long *) (*p)->tss.cr3;
487 for (i = 0; i < 0x300; ++i) {
488 if ((ptbl = pagedir[i]) == 0) {
489 tpag -= PTRS_PER_PAGE;
490 continue;
491 }
492 buf = (unsigned long *)(ptbl & PAGE_MASK);
493 for (pte = buf; pte < (buf + PTRS_PER_PAGE); ++pte) {
494 if (*pte != 0) {
495 ++size;
496 if (*pte & 1) {
497 ++resident;
498 if (tpag > 0)
499 ++trs;
500 else
501 ++drs;
502 if (i >= 15 && i < 0x2f0) {
503 ++lrs;
504 if (*pte & 0x40)
505 ++dt;
506 else
507 --drs;
508 }
509 map_nr = MAP_NR(*pte);
510 if (map_nr < (high_memory / PAGE_SIZE) && mem_map[map_nr] > 1)
511 ++share;
512 }
513 }
514 --tpag;
515 }
516 }
517 }
518 return sprintf(buffer,"%d %d %d %d %d %d %d\n",
519 size, resident, share, trs, lrs, drs, dt);
520 }
521
522 static int get_maps(int pid, char *buf)
523 {
524 int sz = 0;
525 struct task_struct **p = get_task(pid);
526 struct vm_area_struct *map;
527
528 if (!p || !*p)
529 return 0;
530
531 for(map = (*p)->mm->mmap; map != NULL; map = map->vm_next) {
532 char str[7], *cp = str;
533 int flags;
534 int end = sz + 80;
535 dev_t dev;
536 unsigned long ino;
537
538 flags = map->vm_flags;
539
540 *cp++ = flags & VM_READ ? 'r' : '-';
541 *cp++ = flags & VM_WRITE ? 'w' : '-';
542 *cp++ = flags & VM_EXEC ? 'x' : '-';
543 *cp++ = flags & VM_SHARED ? 's' : 'p';
544 *cp++ = 0;
545
546 if (end >= PAGE_SIZE) {
547 sprintf(buf+sz, "...\n");
548 break;
549 }
550
551 if (map->vm_inode != NULL) {
552 dev = map->vm_inode->i_dev;
553 ino = map->vm_inode->i_ino;
554 } else {
555 dev = 0;
556 ino = 0;
557 }
558
559 sz += sprintf(buf+sz, "%08lx-%08lx %s %08lx %02x:%02x %lu\n",
560 map->vm_start, map->vm_end, str, map->vm_offset,
561 MAJOR(dev),MINOR(dev), ino);
562 if (sz > end) {
563 printk("get_maps: end(%d) < sz(%d)\n", end, sz);
564 break;
565 }
566 }
567
568 return sz;
569 }
570
571 extern int get_module_list(char *);
572 extern int get_device_list(char *);
573 extern int get_filesystem_list(char *);
574 extern int get_ksyms_list(char *);
575 extern int get_irq_list(char *);
576 extern int get_dma_list(char *);
577 extern int get_cpuinfo(char *);
578
579 static int get_root_array(char * page, int type)
580 {
581 switch (type) {
582 case PROC_LOADAVG:
583 return get_loadavg(page);
584
585 case PROC_UPTIME:
586 return get_uptime(page);
587
588 case PROC_MEMINFO:
589 return get_meminfo(page);
590
591 case PROC_CPUINFO:
592 return get_cpuinfo(page);
593
594 case PROC_VERSION:
595 return get_version(page);
596
597 #ifdef CONFIG_DEBUG_MALLOC
598 case PROC_MALLOC:
599 return get_malloc(page);
600 #endif
601
602 case PROC_MODULES:
603 return get_module_list(page);
604
605 case PROC_STAT:
606 return get_kstat(page);
607
608 case PROC_DEVICES:
609 return get_device_list(page);
610
611 case PROC_INTERRUPTS:
612 return get_irq_list(page);
613
614 case PROC_FILESYSTEMS:
615 return get_filesystem_list(page);
616
617 case PROC_KSYMS:
618 return get_ksyms_list(page);
619
620 case PROC_DMA:
621 return get_dma_list(page);
622
623 case PROC_IOPORTS:
624 return get_ioport_list(page);
625 }
626 return -EBADF;
627 }
628
629 static int get_process_array(char * page, int pid, int type)
630 {
631 switch (type) {
632 case PROC_PID_ENVIRON:
633 return get_env(pid, page);
634 case PROC_PID_CMDLINE:
635 return get_arg(pid, page);
636 case PROC_PID_STAT:
637 return get_stat(pid, page);
638 case PROC_PID_STATM:
639 return get_statm(pid, page);
640 case PROC_PID_MAPS:
641 return get_maps(pid, page);
642 }
643 return -EBADF;
644 }
645
646
647 static inline int fill_array(char * page, int pid, int type)
648 {
649 if (pid)
650 return get_process_array(page, pid, type);
651 return get_root_array(page, type);
652 }
653
654 static int array_read(struct inode * inode, struct file * file,char * buf, int count)
655 {
656 unsigned long page;
657 int length;
658 int end;
659 unsigned int type, pid;
660
661 if (count < 0)
662 return -EINVAL;
663 if (!(page = __get_free_page(GFP_KERNEL)))
664 return -ENOMEM;
665 type = inode->i_ino;
666 pid = type >> 16;
667 type &= 0x0000ffff;
668 length = fill_array((char *) page, pid, type);
669 if (length < 0) {
670 free_page(page);
671 return length;
672 }
673 if (file->f_pos >= length) {
674 free_page(page);
675 return 0;
676 }
677 if (count + file->f_pos > length)
678 count = length - file->f_pos;
679 end = count + file->f_pos;
680 memcpy_tofs(buf, (char *) page + file->f_pos, count);
681 free_page(page);
682 file->f_pos = end;
683 return count;
684 }
685
686 static struct file_operations proc_array_operations = {
687 NULL,
688 array_read,
689 NULL,
690 NULL,
691 NULL,
692 NULL,
693 NULL,
694 NULL,
695 NULL,
696 NULL
697 };
698
699 struct inode_operations proc_array_inode_operations = {
700 &proc_array_operations,
701 NULL,
702 NULL,
703 NULL,
704 NULL,
705 NULL,
706 NULL,
707 NULL,
708 NULL,
709 NULL,
710 NULL,
711 NULL,
712 NULL,
713 NULL,
714 NULL
715 };
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