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 unsigned long long rss = 0;
318 uint64_t stime_total, utime_total;
321 if (vc_virt_stat(xid, &vstat) == -1) {
322 perror("vc_virt_stat()");
325 if (vc_rlimit_stat(xid, RLIMIT_NPROC, &limit) == -1) {
326 perror("vc_rlimit_stat(RLIMIT_NRPOC)");
329 if (vc_get_vhi_name(xid, vcVHI_CONTEXT, vhi_name, sizeof(vhi_name)) == -1) {
330 perror("vc_get_vhi_name(CONTEXT)");
334 if ((fd = open(DEFAULTCONFDIR "/cgroup/mnt", O_RDONLY)) == -1) {
335 strcpy(cgroup, "/dev/cgroup/");
336 cgroup_len = sizeof("/dev/cgroup");
339 cgroup_len = read(fd, cgroup, sizeof(cgroup));
340 if (cgroup_len == -1) {
341 perror("read(cgroup/mnt)");
345 cgroup[cgroup_len] = '/';
347 cgroup[cgroup_len] = 0;
350 if ((fd = open(DEFAULTCONFDIR "/cgroup/base", O_RDONLY)) != -1) {
351 len = read(fd, cgroup + cgroup_len, sizeof(cgroup) - cgroup_len);
353 perror("read(cgroup/base)");
358 if (cgroup[cgroup_len - 1] != '/') {
359 cgroup[cgroup_len] = '/';
362 cgroup[cgroup_len] = 0;
365 len = strlen(vhi_name);
366 if ((len + sizeof("/cgroup/name")) >= sizeof(filename)) {
367 WRITE_MSG(2, "too long context name: ");
368 WRITE_STR(2, vhi_name);
372 strcpy(filename, vhi_name);
373 strcpy(filename + len, "/cgroup/name");
375 if ((fd = open(filename, O_RDONLY)) == -1) {
376 char *dir = strrchr(vhi_name, '/');
378 WRITE_MSG(2, "invalid context name: ");
384 if ((len + cgroup_len) >= sizeof(cgroup)) {
385 WRITE_MSG(2, "cgroup name too long: ");
390 strcpy(cgroup + cgroup_len, dir);
395 ret = read(fd, cgroup + cgroup_len, sizeof(cgroup) - cgroup_len);
397 perror("read(cgroup/name)");
404 if ((cgroup_len + sizeof("/memory.usage_in_bytes")) > sizeof(filename)) {
405 WRITE_MSG(2, "cgroup name too long: ");
406 WRITE_STR(2, cgroup);
410 strcpy(filename, cgroup);
411 strcpy(filename + cgroup_len, "/memory.usage_in_bytes");
413 if ((fd = open(filename, O_RDONLY)) == -1)
414 perror("open(memory.usage_in_bytes)");
416 if (read(fd, buf, sizeof(buf)) == -1) {
417 perror("read(memory.usage_in_bytes)");
421 if ((rss = strtoull(buf, &endptr, 0)) == ULLONG_MAX ||
422 (*endptr != '\n' && *endptr != '\0')) {
423 perror("strtoull(memory.usage_in_bytes)");
428 strcpy(filename, cgroup);
429 strcpy(filename + cgroup_len, "/cpuacct.stat");
431 if ((fd = open(filename, O_RDONLY)) == -1) {
434 // XXX: arbitrary CPU limit.
435 for (cpu = 0; cpu < 1024; cpu++) {
438 if (vc_sched_info(xid, &sched) == -1)
441 utime_total += sched.user_msec;
442 stime_total += sched.sys_msec;
446 if (read(fd, buf, sizeof(buf)) == -1) {
447 perror("read(cpuacct.stat)");
452 if (sscanf(buf, "user %llu\nsystem %llu\n", &utime_total, &stime_total) != 2) {
453 perror("sscanf(cpuacct.stat)");
458 res = Vector_insert(vec, &xid, cmpData);
461 res->process_count = limit.value;
462 res->VmRSS_total = rss / 4096;
463 res->start_time_oldest= getUptime() - vstat.uptime/1000000;
465 res->utime_total = toMsec(utime_total);
466 res->stime_total = toMsec(stime_total);
469 res->VmSize_total += process->VmSize;
473 // shamelessly stolen from procps...
475 find_elf_note(unsigned long findme){
476 unsigned long *ep = (unsigned long *)environ;
479 if(ep[0]==findme) return ep[1];
482 return (unsigned long)(-1);
485 static void initHertz() __attribute__((__constructor__));
486 static void initPageSize() __attribute__((__constructor__));
491 hertz = find_elf_note(AT_CLKTCK);
492 if (hertz==(unsigned long)(-1))
493 hertz = sysconf(_SC_CLK_TCK);
499 pagesize = sysconf(_SC_PAGESIZE);
502 // open the process's status file to get the ctx number, and other stat
503 struct process_info *
504 get_process_info(char *pid)
509 size_t idx, l=strlen(pid);
510 static struct process_info process;
513 process.s_context = vc_get_task_xid(atoi(pid));
515 # warning Compiling in debug-code
516 process.s_context = random()%6;
519 if (process.s_context==VC_NOCTX) {
521 WRITE_MSG(2, "vc_get_task_xid(");
524 WRITE_STR(2, strerror(err));
530 memcpy(buffer, "/proc/", 6); idx = 6;
531 memcpy(buffer+idx, pid, l); idx += l;
532 memcpy(buffer+idx, "/stat", 6);
534 // open the /proc/#/stat file
535 if ((fd = open(buffer, O_RDONLY, 0)) == -1)
537 // put the file in a buffer
538 if (read(fd, buffer, sizeof(buffer)) < 1)
543 p = strchr(buffer, ')'); // go after the PID (process_name)
544 for (idx = 0; idx<12 && *p!='\0'; ++p)
545 if ((*p)==' ') ++idx;
547 process.utime = toMsec(strtol(p, &p, 10));
548 process.stime = toMsec(strtol(p+1, &p, 10));
549 process.cutime = toMsec(strtol(p+1, &p, 10));
550 process.cstime = toMsec(strtol(p+1, &p, 10));
552 for (idx = 0; idx<5 && *p!='\0'; ++p)
553 if ((*p)==' ') ++idx;
555 process.start_time = toMsec(strtol(p, &p, 10));
556 process.VmSize = strtol(p+1, &p, 10);
557 process.VmRSS = strtol(p+1, &p, 10);
559 //printf("pid=%s, start_time=%llu\n", pid, process.start_time);
564 fillUintZero(char *buf, unsigned long val, size_t cnt)
568 l = utilvserver_fmt_ulong(buf, val);
570 memmove(buf+cnt-l, buf, l);
571 memset(buf, '0', cnt-l);
579 shortenMem(char *buf, unsigned long val)
581 char const * SUFFIXES[] = { " ", "K", "M", "G", "T", "+" };
583 char const * suffix = "+";
585 unsigned int mod = 0;
587 for (i=0; i<6; ++i) {
589 suffix = SUFFIXES[i];
592 mod = 10*(val & 1023)/1024;
596 if (val >9999) val=9999;
597 if (val>=1000) mod=0;
599 l = utilvserver_fmt_ulong(tmp, val);
602 l += utilvserver_fmt_ulong(tmp+l, mod);
604 i = 7-l-strlen(suffix);
606 memcpy(buf+i, tmp, l);
607 memcpy(buf+i+l, suffix, strlen(suffix));
611 shortenTime(char *buf, uint64_t t)
616 unsigned long hh, mm, ss, ms;
629 memcpy(ptr, "INVALID", 7);
633 ptr += utilvserver_fmt_ulong(ptr, t/365);
635 ptr += fillUintZero(ptr, t%365, 2);
637 ptr += fillUintZero(ptr, hh, 2);
640 ptr += utilvserver_fmt_ulong(ptr, t);
642 ptr += fillUintZero(ptr, hh, 2);
644 ptr += fillUintZero(ptr, mm, 2);
647 ptr += utilvserver_fmt_ulong(ptr, hh);
649 ptr += fillUintZero(ptr, mm, 2);
651 ptr += fillUintZero(ptr, ss, 2);
654 ptr += utilvserver_fmt_ulong(ptr, mm);
656 ptr += fillUintZero(ptr, ss, 2);
658 ptr += fillUintZero(ptr, ms, 2);
662 memcpy(buf+10-(ptr-tmp), tmp, ptr-tmp);
666 formatName(char *dst, vcCfgStyle style, char const *name)
670 if (name==0) name = "";
677 memcpy(dst, name, len);
684 memcpy(dst, name, len);
693 showContexts(struct Vector const *vec)
695 uint64_t uptime = getUptime();
696 struct XidData const * ptr = Vector_begin_const(vec);
697 struct XidData const * const end_ptr = Vector_end_const(vec);
700 WRITE_MSG(1, "CTX PROC VSZ RSS userTIME sysTIME UPTIME NAME\n");
701 for (; ptr<end_ptr; ++ptr) {
702 char buf[sizeof(xid_t)*3 + 512];
703 char tmp[sizeof(int)*3 + 2];
706 memset(buf, ' ', sizeof(buf));
707 l = utilvserver_fmt_long(buf, ptr->xid);
708 l = utilvserver_fmt_long(tmp, ptr->process_count);
709 memcpy(buf+10-l, tmp, l);
711 shortenMem (buf+10, ptr->VmSize_total);
712 shortenMem (buf+17, ptr->VmRSS_total*pagesize);
713 shortenTime(buf+24, ptr->utime_total);
714 shortenTime(buf+34, ptr->stime_total);
715 //printf("%llu, %llu\n", uptime, ptr->start_time_oldest);
716 shortenTime(buf+44, uptime - ptr->start_time_oldest);
718 formatName(buf+55, ptr->cfgstyle, ptr->name)[0] = '\0';
720 Vwrite(1, buf, strlen(buf));
726 fillName(void *obj_v, void UNUSED * a)
728 struct XidData * obj = obj_v;
732 obj->cfgstyle = vcCFG_NONE;
733 obj->name = strdup("root server");
737 obj->cfgstyle = vcCFG_NONE;
738 obj->name = strdup("monitoring server");
744 obj->cfgstyle = vcCFG_AUTO;
746 if ((cfgpath = vc_getVserverByCtx(obj->xid, &obj->cfgstyle, 0))==0 ||
747 (obj->name = vc_getVserverName(cfgpath, obj->cfgstyle))==0) {
749 obj->cfgstyle = vcCFG_NONE;
760 freeXidData(void *obj_v, void UNUSED * a)
762 struct XidData * obj = obj_v;
764 free(const_cast(char *)(obj->name));
767 int main(int argc, char **argv)
770 struct dirent* dir_entry;
772 struct Vector xid_data;
776 int c = getopt_long(argc, argv, "+O:", CMDLINE_OPTIONS, 0);
780 case CMD_HELP : showHelp(argv[0]);
781 case CMD_VERSION : showVersion();
784 WRITE_MSG(2, "Try '");
785 WRITE_STR(2, argv[0]);
786 WRITE_MSG(2, " --help' for more information.\n");
793 WRITE_MSG(2, "Unknown parameter, use '--help' for more information\n");
797 if (hertz==0x42) initHertz();
798 if (pagesize==0x42) initPageSize();
800 Vector_init(&xid_data, sizeof(struct XidData));
802 if (vc_isSupported(vcFEATURE_VSTAT)) {
804 Echdir(PROC_VIRT_DIR_NAME);
805 proc_dir = Eopendir(".");
806 while ((dir_entry = readdir(proc_dir)) != NULL) {
807 if (!isNumberUnsigned(dir_entry->d_name, &xid, false))
810 registerXidVstat(&xid_data, xid);
815 void (*handler)(struct Vector *vec, struct process_info *process);
819 if (!switchToWatchXid(&errptr)) {
824 if (access("/proc/uptime",R_OK)==-1 && errno==ENOENT)
826 "WARNING: can not access /proc/uptime. Usually, this is caused by\n"
827 " procfs-security. Please read the FAQ for more details\n"
828 " http://linux-vserver.org/Proc-Security\n");
830 if (vc_isSupported(vcFEATURE_MEMCG))
831 handler = registerXidCgroups;
833 handler = registerXid;
835 Echdir(PROC_DIR_NAME);
836 proc_dir = Eopendir(".");
837 while ((dir_entry = readdir(proc_dir)) != NULL)
839 // select only process file
840 if (!isdigit(*dir_entry->d_name))
843 if (atoi(dir_entry->d_name) != my_pid) {
844 struct process_info * info = get_process_info(dir_entry->d_name);
846 handler(&xid_data, info);
852 Vector_foreach(&xid_data, fillName, 0);
854 // output the ctx_list
855 showContexts(&xid_data);
858 Vector_foreach(&xid_data, freeXidData, 0);
859 Vector_free(&xid_data);