3 // Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
4 // based on vserver-stat.cc by Guillaum Dallaire and Jacques Gelinas
6 // This program is free software; you can redistribute it and/or modify
7 // it under the terms of the GNU General Public License as published by
8 // the Free Software Foundation; either version 2, or (at your option)
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 #include "pathconfig.h"
29 #include <ensc_vector/vector.h>
36 #include <sys/types.h>
45 #include <sys/param.h>
46 #include <sys/resource.h>
48 #define ENSC_WRAPPERS_DIRENT 1
49 #define ENSC_WRAPPERS_VSERVER 1
50 #define ENSC_WRAPPERS_FCNTL 1
51 #define ENSC_WRAPPERS_UNISTD 1
54 #define PROC_DIR_NAME "/proc"
55 #define PROC_VIRT_DIR_NAME "/proc/virtual"
56 #define CTX_DIR_NAME "/var/run/vservers/"
57 #define CTX_NAME_MAX_LEN 50
59 int wrapper_exit_code = 1;
62 #define AT_CLKTCK 17 /* frequency of times() */
65 static unsigned long hertz =0x42;
66 static unsigned long pagesize=0x42;
71 unsigned int process_count;
72 uint64_t VmSize_total;
74 uint64_t start_time_oldest;
75 uint64_t stime_total, utime_total;
83 long VmSize; // number of pages of virtual memory
84 long VmRSS; // resident set size from /proc/#/stat
85 uint64_t start_time; // start time of process -- milliseconds since 1-1-70
86 uint64_t stime, utime; // kernel & user-mode CPU time accumulated by process
87 uint64_t cstime, cutime; // cumulative time of process and reaped children
92 enum { tpUNSET, tpCTX, tpPID } type;
95 unsigned int interval;
102 #define CMD_HELP 0x1000
103 #define CMD_VERSION 0x1001
106 CMDLINE_OPTIONS[] = {
107 { "help", no_argument, 0, CMD_HELP },
108 { "version", no_argument, 0, CMD_VERSION },
109 { "sort", required_argument, 0, 'O' },
114 showHelp(char const *cmd)
116 WRITE_MSG(1, "Usage: ");
120 "Show information about all active contexts.\n\n"
121 " CTX# Context number\n"
122 " #0 = root context\n"
123 " #1 = monitoring context\n"
124 " PROC QTY Quantity of processes in each context\n"
125 " VSZ Number of pages of virtual memory\n"
126 " RSS Resident set size\n"
127 " userTIME User-mode CPU time accumulated\n"
128 " sysTIME Kernel-mode CPU time accumulated\n"
129 " UPTIME Uptime/context\n"
130 " NAME Virtual server name\n"
139 "vserver-stat " VERSION " -- show virtual context statistics\n"
140 "This program is part of " PACKAGE_STRING "\n\n"
141 "Copyright (C) 2003,2005 Enrico Scholz\n"
142 VERSION_COPYRIGHT_DISCLAIMER);
147 // return uptime (in ms) from /proc/uptime
158 // open the /proc/uptime file
159 fd = EopenD("/proc/uptime", O_RDONLY, 0);
160 len = Eread(fd, buffer, sizeof buffer);
162 if (len==sizeof(buffer)) {
163 WRITE_MSG(2, "Too much data in /proc/uptime; aborting...\n");
168 while (len>0 && buffer[len-1]=='\n') --len;
171 secs = strtol(buffer, &errptr, 10);
172 if (*errptr!='.') errptr = buffer;
175 switch (strlen(errptr+1)) {
176 case 0 : mult = 1000; break;
177 case 1 : mult = 100; break;
178 case 2 : mult = 10; break;
179 case 3 : mult = 1; break;
180 default : mult = 0; break;
182 msecs = strtol(errptr+1, &errptr, 10) * mult;
185 if ((*errptr!='\0' && *errptr!=' ') || errptr==buffer) {
186 WRITE_MSG(2, "Bad data in /proc/uptime\n");
190 return secs*1000 + msecs;
194 cmpData(void const *xid_v, void const *map_v)
196 xid_t const * const xid = xid_v;
197 struct XidData const * const map = map_v;
198 int res = *xid - map->xid;
204 registerXid(struct Vector *vec, struct process_info *process)
208 res = Vector_search(vec, &process->s_context, cmpData);
210 res = Vector_insert(vec, &process->s_context, cmpData);
211 res->xid = process->s_context;
212 res->process_count = 0;
213 res->VmSize_total = 0;
214 res->VmRSS_total = 0;
215 res->utime_total = 0;
216 res->stime_total = 0;
217 res->start_time_oldest = process->start_time;
220 ++res->process_count;
221 res->VmSize_total += process->VmSize;
222 res->VmRSS_total += process->VmRSS;
223 res->utime_total += process->utime + process->cutime;
224 res->stime_total += process->stime + process->cstime;
226 res->start_time_oldest = MIN(res->start_time_oldest, process->start_time);
230 registerXidVstat(struct Vector *vec, unsigned long xid_l)
232 xid_t xid = (xid_t) xid_l;
234 struct vc_rlimit_stat limit[3];
235 struct vc_virt_stat vstat;
236 struct vc_sched_info sched;
239 res = Vector_search(vec, &xid, cmpData);
241 WRITE_MSG(2, "Duplicate xid found?!\n");
244 if (vc_virt_stat(xid, &vstat) == -1) {
245 perror("vc_virt_stat()");
248 if (vc_rlimit_stat(xid, RLIMIT_NPROC, &limit[0]) == -1) {
249 perror("vc_rlimit_stat(RLIMIT_NRPOC)");
252 if (vc_rlimit_stat(xid, RLIMIT_AS, &limit[1]) == -1) {
253 perror("vc_rlimit_stat(RLIMIT_AS)");
256 if (vc_rlimit_stat(xid, RLIMIT_RSS, &limit[2]) == -1) {
257 perror("vc_rlimit_stat(RLIMIT_RSS)");
261 res = Vector_insert(vec, &xid, cmpData);
264 res->process_count = limit[0].value;
265 res->VmSize_total = limit[1].value * pagesize;
266 res->VmRSS_total = limit[2].value;
267 res->start_time_oldest= getUptime() - vstat.uptime/1000000;
269 res->utime_total = 0;
270 res->stime_total = 0;
271 // XXX: arbitrary CPU limit.
272 for (cpu = 0; cpu < 1024; cpu++) {
275 if (vc_sched_info(xid, &sched) == -1)
278 res->utime_total += sched.user_msec;
279 res->stime_total += sched.sys_msec;
284 registerXidCgroups(struct Vector *vec, struct process_info *process)
286 xid_t xid = (xid_t) process->s_context;
289 switch (vc_getXIDType(xid)) {
297 res = Vector_search(vec, &xid, cmpData);
299 struct vc_rlimit_stat limit;
300 struct vc_virt_stat vstat;
301 struct vc_sched_info sched;
309 unsigned long long rss;
312 if (vc_virt_stat(xid, &vstat) == -1) {
313 perror("vc_virt_stat()");
316 if (vc_rlimit_stat(xid, RLIMIT_NPROC, &limit) == -1) {
317 perror("vc_rlimit_stat(RLIMIT_NRPOC)");
320 if (vc_get_vhi_name(xid, vcVHI_CONTEXT, vhi_name, sizeof(vhi_name)) == -1) {
321 perror("vc_get_vhi_name(CONTEXT)");
325 if ((fd = open(DEFAULTCONFDIR "/cgroup/mnt", O_RDONLY)) == -1) {
326 strcpy(cgroup, "/dev/cgroup/");
327 cgroup_len = sizeof("/dev/cgroup");
330 cgroup_len = read(fd, cgroup, sizeof(cgroup));
331 if (cgroup_len == -1) {
332 perror("read(cgroup/mnt)");
336 cgroup[cgroup_len] = '/';
338 cgroup[cgroup_len] = 0;
341 snprintf(filename, sizeof(filename), "%s/cgroup/name", vhi_name);
342 if ((fd = open(filename, O_RDONLY)) == -1) {
343 char *dir = strrchr(vhi_name, '/');
345 fprintf(stderr, "invalid context name: %s\n", dir);
348 snprintf(cgroup + cgroup_len, sizeof(cgroup) - cgroup_len, "%s", dir);
352 ret = read(fd, cgroup + cgroup_len, sizeof(cgroup) - cgroup_len);
354 perror("read(cgroup/name)");
360 snprintf(filename, sizeof(filename), "%s/memory.usage_in_bytes", cgroup);
361 if ((fd = open(filename, O_RDONLY)) == -1) {
362 perror("open(memory.usage_in_bytes)");
365 if (read(fd, buf, sizeof(buf)) == -1) {
366 perror("read(memory.usage_in_bytes)");
370 if ((rss = strtoull(buf, &endptr, 0)) == ULLONG_MAX ||
371 (*endptr != '\n' && *endptr != '\0')) {
372 perror("strtoull(memory.usage_in_bytes)");
376 res = Vector_insert(vec, &xid, cmpData);
379 res->process_count = limit.value;
380 res->VmRSS_total = rss / 4096;
381 res->start_time_oldest= getUptime() - vstat.uptime/1000000;
383 res->utime_total = 0;
384 res->stime_total = 0;
385 // XXX: arbitrary CPU limit.
386 for (cpu = 0; cpu < 1024; cpu++) {
389 if (vc_sched_info(xid, &sched) == -1)
392 res->utime_total += sched.user_msec;
393 res->stime_total += sched.sys_msec;
397 res->VmSize_total += process->VmSize;
400 static inline uint64_t
403 return v*1000llu/hertz;
407 // shamelessly stolen from procps...
409 find_elf_note(unsigned long findme){
410 unsigned long *ep = (unsigned long *)environ;
413 if(ep[0]==findme) return ep[1];
416 return (unsigned long)(-1);
419 static void initHertz() __attribute__((__constructor__));
420 static void initPageSize() __attribute__((__constructor__));
425 hertz = find_elf_note(AT_CLKTCK);
426 if (hertz==(unsigned long)(-1))
427 hertz = sysconf(_SC_CLK_TCK);
433 pagesize = sysconf(_SC_PAGESIZE);
436 // open the process's status file to get the ctx number, and other stat
437 struct process_info *
438 get_process_info(char *pid)
443 size_t idx, l=strlen(pid);
444 static struct process_info process;
447 process.s_context = vc_get_task_xid(atoi(pid));
449 # warning Compiling in debug-code
450 process.s_context = random()%6;
453 if (process.s_context==VC_NOCTX) {
455 WRITE_MSG(2, "vc_get_task_xid(");
458 WRITE_STR(2, strerror(err));
464 memcpy(buffer, "/proc/", 6); idx = 6;
465 memcpy(buffer+idx, pid, l); idx += l;
466 memcpy(buffer+idx, "/stat", 6);
468 // open the /proc/#/stat file
469 if ((fd = open(buffer, O_RDONLY, 0)) == -1)
471 // put the file in a buffer
472 if (read(fd, buffer, sizeof(buffer)) < 1)
477 p = strchr(buffer, ')'); // go after the PID (process_name)
478 for (idx = 0; idx<12 && *p!='\0'; ++p)
479 if ((*p)==' ') ++idx;
481 process.utime = toMsec(strtol(p, &p, 10));
482 process.stime = toMsec(strtol(p+1, &p, 10));
483 process.cutime = toMsec(strtol(p+1, &p, 10));
484 process.cstime = toMsec(strtol(p+1, &p, 10));
486 for (idx = 0; idx<5 && *p!='\0'; ++p)
487 if ((*p)==' ') ++idx;
489 process.start_time = toMsec(strtol(p, &p, 10));
490 process.VmSize = strtol(p+1, &p, 10);
491 process.VmRSS = strtol(p+1, &p, 10);
493 //printf("pid=%s, start_time=%llu\n", pid, process.start_time);
498 fillUintZero(char *buf, unsigned long val, size_t cnt)
502 l = utilvserver_fmt_ulong(buf, val);
504 memmove(buf+cnt-l, buf, l);
505 memset(buf, '0', cnt-l);
513 shortenMem(char *buf, unsigned long val)
515 char const * SUFFIXES[] = { " ", "K", "M", "G", "T", "+" };
517 char const * suffix = "+";
519 unsigned int mod = 0;
521 for (i=0; i<6; ++i) {
523 suffix = SUFFIXES[i];
526 mod = 10*(val & 1023)/1024;
530 if (val >9999) val=9999;
531 if (val>=1000) mod=0;
533 l = utilvserver_fmt_ulong(tmp, val);
536 l += utilvserver_fmt_ulong(tmp+l, mod);
538 i = 7-l-strlen(suffix);
540 memcpy(buf+i, tmp, l);
541 memcpy(buf+i+l, suffix, strlen(suffix));
545 shortenTime(char *buf, uint64_t t)
550 unsigned long hh, mm, ss, ms;
563 memcpy(ptr, "INVALID", 7);
567 ptr += utilvserver_fmt_ulong(ptr, t/365);
569 ptr += fillUintZero(ptr, t%365, 2);
571 ptr += fillUintZero(ptr, hh, 2);
574 ptr += utilvserver_fmt_ulong(ptr, t);
576 ptr += fillUintZero(ptr, hh, 2);
578 ptr += fillUintZero(ptr, mm, 2);
581 ptr += utilvserver_fmt_ulong(ptr, hh);
583 ptr += fillUintZero(ptr, mm, 2);
585 ptr += fillUintZero(ptr, ss, 2);
588 ptr += utilvserver_fmt_ulong(ptr, mm);
590 ptr += fillUintZero(ptr, ss, 2);
592 ptr += fillUintZero(ptr, ms, 2);
596 memcpy(buf+10-(ptr-tmp), tmp, ptr-tmp);
600 formatName(char *dst, vcCfgStyle style, char const *name)
604 if (name==0) name = "";
611 memcpy(dst, name, len);
618 memcpy(dst, name, len);
627 showContexts(struct Vector const *vec)
629 uint64_t uptime = getUptime();
630 struct XidData const * ptr = Vector_begin_const(vec);
631 struct XidData const * const end_ptr = Vector_end_const(vec);
634 WRITE_MSG(1, "CTX PROC VSZ RSS userTIME sysTIME UPTIME NAME\n");
635 for (; ptr<end_ptr; ++ptr) {
636 char buf[sizeof(xid_t)*3 + 512];
637 char tmp[sizeof(int)*3 + 2];
640 memset(buf, ' ', sizeof(buf));
641 l = utilvserver_fmt_long(buf, ptr->xid);
642 l = utilvserver_fmt_long(tmp, ptr->process_count);
643 memcpy(buf+10-l, tmp, l);
645 shortenMem (buf+10, ptr->VmSize_total);
646 shortenMem (buf+17, ptr->VmRSS_total*pagesize);
647 shortenTime(buf+24, ptr->utime_total);
648 shortenTime(buf+34, ptr->stime_total);
649 //printf("%llu, %llu\n", uptime, ptr->start_time_oldest);
650 shortenTime(buf+44, uptime - ptr->start_time_oldest);
652 formatName(buf+55, ptr->cfgstyle, ptr->name)[0] = '\0';
654 Vwrite(1, buf, strlen(buf));
660 fillName(void *obj_v, void UNUSED * a)
662 struct XidData * obj = obj_v;
666 obj->cfgstyle = vcCFG_NONE;
667 obj->name = strdup("root server");
671 obj->cfgstyle = vcCFG_NONE;
672 obj->name = strdup("monitoring server");
678 obj->cfgstyle = vcCFG_AUTO;
680 if ((cfgpath = vc_getVserverByCtx(obj->xid, &obj->cfgstyle, 0))==0 ||
681 (obj->name = vc_getVserverName(cfgpath, obj->cfgstyle))==0) {
683 obj->cfgstyle = vcCFG_NONE;
694 freeXidData(void *obj_v, void UNUSED * a)
696 struct XidData * obj = obj_v;
698 free(const_cast(char *)(obj->name));
701 int main(int argc, char **argv)
704 struct dirent* dir_entry;
706 struct Vector xid_data;
710 int c = getopt_long(argc, argv, "+O:", CMDLINE_OPTIONS, 0);
714 case CMD_HELP : showHelp(argv[0]);
715 case CMD_VERSION : showVersion();
718 WRITE_MSG(2, "Try '");
719 WRITE_STR(2, argv[0]);
720 WRITE_MSG(2, " --help' for more information.\n");
727 WRITE_MSG(2, "Unknown parameter, use '--help' for more information\n");
731 if (hertz==0x42) initHertz();
732 if (pagesize==0x42) initPageSize();
734 Vector_init(&xid_data, sizeof(struct XidData));
736 if (vc_isSupported(vcFEATURE_VSTAT) && !vc_isSupported(vcFEATURE_MEMCG)) {
738 Echdir(PROC_VIRT_DIR_NAME);
739 proc_dir = Eopendir(".");
740 while ((dir_entry = readdir(proc_dir)) != NULL) {
741 if (!isNumberUnsigned(dir_entry->d_name, &xid, false))
744 registerXidVstat(&xid_data, xid);
749 void (*handler)(struct Vector *vec, struct process_info *process);
753 if (!switchToWatchXid(&errptr)) {
758 if (access("/proc/uptime",R_OK)==-1 && errno==ENOENT)
760 "WARNING: can not access /proc/uptime. Usually, this is caused by\n"
761 " procfs-security. Please read the FAQ for more details\n"
762 " http://linux-vserver.org/Proc-Security\n");
764 if (vc_isSupported(vcFEATURE_MEMCG))
765 handler = registerXidCgroups;
767 handler = registerXid;
769 Echdir(PROC_DIR_NAME);
770 proc_dir = Eopendir(".");
771 while ((dir_entry = readdir(proc_dir)) != NULL)
773 // select only process file
774 if (!isdigit(*dir_entry->d_name))
777 if (atoi(dir_entry->d_name) != my_pid) {
778 struct process_info * info = get_process_info(dir_entry->d_name);
780 handler(&xid_data, info);
786 Vector_foreach(&xid_data, fillName, 0);
788 // output the ctx_list
789 showContexts(&xid_data);
792 Vector_foreach(&xid_data, freeXidData, 0);
793 Vector_free(&xid_data);