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;
193 static inline uint64_t
196 return v*1000llu/hertz;
200 cmpData(void const *xid_v, void const *map_v)
202 xid_t const * const xid = xid_v;
203 struct XidData const * const map = map_v;
204 int res = *xid - map->xid;
210 registerXid(struct Vector *vec, struct process_info *process)
214 res = Vector_search(vec, &process->s_context, cmpData);
216 res = Vector_insert(vec, &process->s_context, cmpData);
217 res->xid = process->s_context;
218 res->process_count = 0;
219 res->VmSize_total = 0;
220 res->VmRSS_total = 0;
221 res->utime_total = 0;
222 res->stime_total = 0;
223 res->start_time_oldest = process->start_time;
226 ++res->process_count;
227 res->VmSize_total += process->VmSize;
228 res->VmRSS_total += process->VmRSS;
229 res->utime_total += process->utime + process->cutime;
230 res->stime_total += process->stime + process->cstime;
232 res->start_time_oldest = MIN(res->start_time_oldest, process->start_time);
236 registerXidVstat(struct Vector *vec, unsigned long xid_l)
238 xid_t xid = (xid_t) xid_l;
240 struct vc_rlimit_stat limit[3];
241 struct vc_virt_stat vstat;
242 struct vc_sched_info sched;
245 res = Vector_search(vec, &xid, cmpData);
247 WRITE_MSG(2, "Duplicate xid found?!\n");
250 if (vc_virt_stat(xid, &vstat) == -1) {
251 perror("vc_virt_stat()");
254 if (vc_rlimit_stat(xid, RLIMIT_NPROC, &limit[0]) == -1) {
255 perror("vc_rlimit_stat(RLIMIT_NRPOC)");
258 if (vc_rlimit_stat(xid, RLIMIT_AS, &limit[1]) == -1) {
259 perror("vc_rlimit_stat(RLIMIT_AS)");
262 if (vc_rlimit_stat(xid, RLIMIT_RSS, &limit[2]) == -1) {
263 perror("vc_rlimit_stat(RLIMIT_RSS)");
267 res = Vector_insert(vec, &xid, cmpData);
270 res->process_count = limit[0].value;
271 res->VmSize_total = limit[1].value * pagesize;
272 res->VmRSS_total = limit[2].value;
273 res->start_time_oldest= getUptime() - vstat.uptime/1000000;
275 res->utime_total = 0;
276 res->stime_total = 0;
277 // XXX: arbitrary CPU limit.
278 for (cpu = 0; cpu < 1024; cpu++) {
281 if (vc_sched_info(xid, &sched) == -1)
284 res->utime_total += sched.user_msec;
285 res->stime_total += sched.sys_msec;
290 registerXidCgroups(struct Vector *vec, struct process_info *process)
292 xid_t xid = (xid_t) process->s_context;
295 switch (vc_getXIDType(xid)) {
303 res = Vector_search(vec, &xid, cmpData);
305 struct vc_rlimit_stat limit;
306 struct vc_virt_stat vstat;
307 struct vc_sched_info sched;
315 ssize_t cgroup_len, name_len;
316 unsigned long long rss = 0;
319 unsigned long long stime_total, utime_total;
324 if (vc_virt_stat(xid, &vstat) == -1) {
325 perror("vc_virt_stat()");
328 if (vc_rlimit_stat(xid, RLIMIT_NPROC, &limit) == -1) {
329 perror("vc_rlimit_stat(RLIMIT_NRPOC)");
332 if (vc_get_vhi_name(xid, vcVHI_CONTEXT, vhi_name, sizeof(vhi_name)) == -1) {
333 perror("vc_get_vhi_name(CONTEXT)");
337 if ((fd = open(DEFAULTCONFDIR "/cgroup/mnt", O_RDONLY)) == -1) {
338 strcpy(cgroup, "/dev/cgroup/");
339 cgroup_len = sizeof("/dev/cgroup");
342 cgroup_len = read(fd, cgroup, sizeof(cgroup));
343 if (cgroup_len == -1) {
344 perror("read(cgroup/mnt)");
347 if (cgroup_len > 0) {
349 while (cgroup[cgroup_len - 1] == '\n' || cgroup[cgroup_len - 1] == '\r')
351 cgroup[cgroup_len] = '/';
353 cgroup[cgroup_len] = 0;
357 if ((fd = open(DEFAULTCONFDIR "/cgroup/base", O_RDONLY)) != -1) {
358 len = read(fd, cgroup + cgroup_len, sizeof(cgroup) - cgroup_len);
360 perror("read(cgroup/base)");
365 while (cgroup[cgroup_len + len - 1] == '\n' || cgroup[cgroup_len + len - 1] == '\r')
368 if (cgroup[cgroup_len - 1] != '/') {
369 cgroup[cgroup_len] = '/';
372 cgroup[cgroup_len] = 0;
376 if (access(DEFAULTCONFDIR "/cgroup/per-ss", F_OK) == 0)
379 len = strlen(vhi_name);
380 if ((len + sizeof("/cgroup/name")) >= sizeof(filename)) {
381 WRITE_MSG(2, "too long context name: ");
382 WRITE_STR(2, vhi_name);
386 strcpy(filename, vhi_name);
387 strcpy(filename + len, "/cgroup/name");
389 if ((fd = open(filename, O_RDONLY)) == -1) {
390 char *dir = strrchr(vhi_name, '/');
392 WRITE_MSG(2, "invalid context name: ");
393 WRITE_STR(2, vhi_name);
397 name_len = strlen(dir);
398 if (name_len >= sizeof(name)) {
399 WRITE_MSG(2, "cgroup name too long: ");
407 name_len = read(fd, name, sizeof(name));
408 if (name_len == -1) {
409 perror("read(cgroup/name)");
413 while (name[name_len - 1] == '\n' || name[name_len - 1] == '\r')
415 name[name_len] = '\0';
420 if ((cgroup_len + name_len + sizeof("/memory/memory.stat")) > sizeof(filename)) {
421 WRITE_MSG(2, "cgroup name too long: ");
422 WRITE_STR(2, cgroup);
426 snprintf(filename, sizeof(filename), "%s%s%s/memory.stat", cgroup, (per_ss ? "/memory" : ""), name);
428 if ((fp = fopen(filename, "r")) == -1)
429 perror("open(memory.stat)");
431 unsigned long long _rss = 0, _mapped_file = 0;
432 while (fgets(buf, sizeof(buf), fp) != NULL) {
433 if (strncmp(buf, "rss ", 4) == 0) {
434 if ((_rss = strtoull(buf + 4, &endptr, 0)) == ULLONG_MAX ||
435 (*endptr != '\n' && *endptr != '\0')) {
436 perror("strtoull(memory.stat:rss)");
440 else if (strncmp(buf, "mapped_file ", 12) == 0) {
441 if ((_mapped_file = strtoull(buf + 12, &endptr, 0)) == ULLONG_MAX ||
442 (*endptr != '\n' && *endptr != '\0')) {
443 perror("strtoull(memory.stat:mapped_file)");
448 rss = _rss + _mapped_file;
451 snprintf(filename, sizeof(filename), "%s%s%s/cpuacct.stat", cgroup, (per_ss ? "/cpuacct" : ""), name);
453 if ((fd = open(filename, O_RDONLY)) == -1) {
456 // XXX: arbitrary CPU limit.
457 for (cpu = 0; cpu < 1024; cpu++) {
460 if (vc_sched_info(xid, &sched) == -1)
463 utime_total += sched.user_msec;
464 stime_total += sched.sys_msec;
468 if (read(fd, buf, sizeof(buf)) == -1) {
469 perror("read(cpuacct.stat)");
474 if (sscanf(buf, "user %llu\nsystem %llu\n", &utime_total, &stime_total) != 2) {
475 perror("sscanf(cpuacct.stat)");
480 res = Vector_insert(vec, &xid, cmpData);
483 res->process_count = limit.value;
484 res->VmRSS_total = rss / 4096;
485 res->start_time_oldest= getUptime() - vstat.uptime/1000000;
487 res->utime_total = toMsec(utime_total);
488 res->stime_total = toMsec(stime_total);
491 res->VmSize_total += process->VmSize;
495 // shamelessly stolen from procps...
497 find_elf_note(unsigned long findme){
498 unsigned long *ep = (unsigned long *)environ;
501 if(ep[0]==findme) return ep[1];
504 return (unsigned long)(-1);
507 static void initHertz() __attribute__((__constructor__));
508 static void initPageSize() __attribute__((__constructor__));
513 hertz = find_elf_note(AT_CLKTCK);
514 if (hertz==(unsigned long)(-1))
515 hertz = sysconf(_SC_CLK_TCK);
521 pagesize = sysconf(_SC_PAGESIZE);
524 // open the process's status file to get the ctx number, and other stat
525 struct process_info *
526 get_process_info(char *pid)
531 size_t idx, l=strlen(pid);
532 static struct process_info process;
535 process.s_context = vc_get_task_xid(atoi(pid));
537 # warning Compiling in debug-code
538 process.s_context = random()%6;
541 if (process.s_context==VC_NOCTX) {
543 WRITE_MSG(2, "vc_get_task_xid(");
546 WRITE_STR(2, strerror(err));
552 memcpy(buffer, "/proc/", 6); idx = 6;
553 memcpy(buffer+idx, pid, l); idx += l;
554 memcpy(buffer+idx, "/stat", 6);
556 // open the /proc/#/stat file
557 if ((fd = open(buffer, O_RDONLY, 0)) == -1)
559 // put the file in a buffer
560 if (read(fd, buffer, sizeof(buffer)) < 1)
565 p = strchr(buffer, ')'); // go after the PID (process_name)
566 for (idx = 0; idx<12 && *p!='\0'; ++p)
567 if ((*p)==' ') ++idx;
569 process.utime = toMsec(strtol(p, &p, 10));
570 process.stime = toMsec(strtol(p+1, &p, 10));
571 process.cutime = toMsec(strtol(p+1, &p, 10));
572 process.cstime = toMsec(strtol(p+1, &p, 10));
574 for (idx = 0; idx<5 && *p!='\0'; ++p)
575 if ((*p)==' ') ++idx;
577 process.start_time = toMsec(strtol(p, &p, 10));
578 process.VmSize = strtol(p+1, &p, 10);
579 process.VmRSS = strtol(p+1, &p, 10);
581 //printf("pid=%s, start_time=%llu\n", pid, process.start_time);
586 fillUintZero(char *buf, unsigned long val, size_t cnt)
590 l = utilvserver_fmt_ulong(buf, val);
592 memmove(buf+cnt-l, buf, l);
593 memset(buf, '0', cnt-l);
601 shortenMem(char *buf, unsigned long val)
603 char const * SUFFIXES[] = { " ", "K", "M", "G", "T", "+" };
605 char const * suffix = "+";
607 unsigned int mod = 0;
609 for (i=0; i<6; ++i) {
611 suffix = SUFFIXES[i];
614 mod = 10*(val & 1023)/1024;
618 if (val >9999) val=9999;
619 if (val>=1000) mod=0;
621 l = utilvserver_fmt_ulong(tmp, val);
624 l += utilvserver_fmt_ulong(tmp+l, mod);
626 i = 7-l-strlen(suffix);
628 memcpy(buf+i, tmp, l);
629 memcpy(buf+i+l, suffix, strlen(suffix));
633 shortenTime(char *buf, uint64_t t)
638 unsigned long hh, mm, ss, ms;
651 memcpy(ptr, "INVALID", 7);
655 ptr += utilvserver_fmt_ulong(ptr, t/365);
657 ptr += fillUintZero(ptr, t%365, 2);
659 ptr += fillUintZero(ptr, hh, 2);
662 ptr += utilvserver_fmt_ulong(ptr, t);
664 ptr += fillUintZero(ptr, hh, 2);
666 ptr += fillUintZero(ptr, mm, 2);
669 ptr += utilvserver_fmt_ulong(ptr, hh);
671 ptr += fillUintZero(ptr, mm, 2);
673 ptr += fillUintZero(ptr, ss, 2);
676 ptr += utilvserver_fmt_ulong(ptr, mm);
678 ptr += fillUintZero(ptr, ss, 2);
680 ptr += fillUintZero(ptr, ms, 2);
684 memcpy(buf+10-(ptr-tmp), tmp, ptr-tmp);
688 formatName(char *dst, vcCfgStyle style, char const *name)
692 if (name==0) name = "";
699 memcpy(dst, name, len);
706 memcpy(dst, name, len);
715 showContexts(struct Vector const *vec)
717 uint64_t uptime = getUptime();
718 struct XidData const * ptr = Vector_begin_const(vec);
719 struct XidData const * const end_ptr = Vector_end_const(vec);
722 WRITE_MSG(1, "CTX PROC VSZ RSS userTIME sysTIME UPTIME NAME\n");
723 for (; ptr<end_ptr; ++ptr) {
724 char buf[sizeof(xid_t)*3 + 512];
725 char tmp[sizeof(int)*3 + 2];
728 memset(buf, ' ', sizeof(buf));
729 l = utilvserver_fmt_long(buf, ptr->xid);
730 l = utilvserver_fmt_long(tmp, ptr->process_count);
731 memcpy(buf+10-l, tmp, l);
733 shortenMem (buf+10, ptr->VmSize_total);
734 shortenMem (buf+17, ptr->VmRSS_total*pagesize);
735 shortenTime(buf+24, ptr->utime_total);
736 shortenTime(buf+34, ptr->stime_total);
737 //printf("%llu, %llu\n", uptime, ptr->start_time_oldest);
738 shortenTime(buf+44, uptime - ptr->start_time_oldest);
740 formatName(buf+55, ptr->cfgstyle, ptr->name)[0] = '\0';
742 Vwrite(1, buf, strlen(buf));
748 fillName(void *obj_v, void UNUSED * a)
750 struct XidData * obj = obj_v;
754 obj->cfgstyle = vcCFG_NONE;
755 obj->name = strdup("root server");
759 obj->cfgstyle = vcCFG_NONE;
760 obj->name = strdup("monitoring server");
766 obj->cfgstyle = vcCFG_AUTO;
768 if ((cfgpath = vc_getVserverByCtx(obj->xid, &obj->cfgstyle, 0))==0 ||
769 (obj->name = vc_getVserverName(cfgpath, obj->cfgstyle))==0) {
771 obj->cfgstyle = vcCFG_NONE;
782 freeXidData(void *obj_v, void UNUSED * a)
784 struct XidData * obj = obj_v;
786 free(const_cast(char *)(obj->name));
789 int main(int argc, char **argv)
792 struct dirent* dir_entry;
794 struct Vector xid_data;
798 int c = getopt_long(argc, argv, "+O:", CMDLINE_OPTIONS, 0);
802 case CMD_HELP : showHelp(argv[0]);
803 case CMD_VERSION : showVersion();
806 WRITE_MSG(2, "Try '");
807 WRITE_STR(2, argv[0]);
808 WRITE_MSG(2, " --help' for more information.\n");
815 WRITE_MSG(2, "Unknown parameter, use '--help' for more information\n");
819 if (hertz==0x42) initHertz();
820 if (pagesize==0x42) initPageSize();
822 Vector_init(&xid_data, sizeof(struct XidData));
824 if (vc_isSupported(vcFEATURE_VSTAT)) {
826 Echdir(PROC_VIRT_DIR_NAME);
827 proc_dir = Eopendir(".");
828 while ((dir_entry = readdir(proc_dir)) != NULL) {
829 if (!isNumberUnsigned(dir_entry->d_name, &xid, false))
832 registerXidVstat(&xid_data, xid);
837 void (*handler)(struct Vector *vec, struct process_info *process);
841 if (!switchToWatchXid(&errptr)) {
846 if (access("/proc/uptime",R_OK)==-1 && errno==ENOENT)
848 "WARNING: can not access /proc/uptime. Usually, this is caused by\n"
849 " procfs-security. Please read the FAQ for more details\n"
850 " http://linux-vserver.org/Proc-Security\n");
852 if (vc_isSupported(vcFEATURE_MEMCG))
853 handler = registerXidCgroups;
855 handler = registerXid;
857 Echdir(PROC_DIR_NAME);
858 proc_dir = Eopendir(".");
859 while ((dir_entry = readdir(proc_dir)) != NULL)
861 // select only process file
862 if (!isdigit(*dir_entry->d_name))
865 if (atoi(dir_entry->d_name) != my_pid) {
866 struct process_info * info = get_process_info(dir_entry->d_name);
868 handler(&xid_data, info);
874 Vector_foreach(&xid_data, fillName, 0);
876 // output the ctx_list
877 showContexts(&xid_data);
880 Vector_foreach(&xid_data, freeXidData, 0);
881 Vector_free(&xid_data);