3 // Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
5 // This program is free software; you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation; version 2 of the License.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 #include "lib/utils-legacy.h"
24 #include "pathconfig.h"
36 #include <sys/utsname.h>
39 #define ENSC_WRAPPERS_FCNTL 1
40 #define ENSC_WRAPPERS_IO 1
41 #define ENSC_WRAPPERS_UNISTD 1
44 typedef enum { tgNONE,tgCONTEXT, tgRUNNING,
45 tgVDIR, tgNAME, tgCFGDIR, tgAPPDIR,
47 tgINITPID, tgINITPID_PID,
48 tgXID, tgUTS, tgSYSINFO,
53 char const * const tag;
55 char const * const descr;
57 { "CONTEXT", tgCONTEXT, ("the current and/or assigned context; when an optinal argument "
58 "evaluates to false,only the current context will be printed") },
59 { "RUNNING", tgRUNNING, "gives out '1' when vserver is running; else, it fails without output" },
60 { "VDIR", tgVDIR, "gives out the root-directory of the vserver" },
61 { "NAME", tgNAME, "gives out the name of the vserver" },
62 { "CFGDIR", tgCFGDIR, "gives out the configuration directory of the vserver" },
63 { "APPDIR", tgAPPDIR, "gives out the name of the toplevel application cfgdir" },
64 { "INITPID", tgINITPID, "gives out the initpid of the given context" },
65 { "INITPID_PID", tgINITPID_PID, "gives out the initpid of the given pid" },
66 { "XID", tgXID, "gives out the context-id of the given pid" },
67 { "APIVER", tgAPIVER, "gives out the version of the kernel API" },
68 { "UTS", tgUTS, ("gives out an uts-entry; possible entries are "
69 "context, sysname, nodename, release, version, "
70 "machine and domainname") },
71 { "SYSINFO", tgSYSINFO, "gives out information about the systen" },
72 { "FEATURE", tgFEATURE, "returns 0 iff the queried feature is supported" },
75 int wrapper_exit_code = 1;
77 static struct option const
79 { "help", no_argument, 0, 'h' },
80 { "version", no_argument, 0, 'v' },
86 showHelp(int fd, char const *cmd, int res)
88 WRITE_MSG(fd, "Usage: ");
91 " [-ql] <vserver>|<pid>|<context> <tag>\n"
92 "Please report bugs to " PACKAGE_BUGREPORT "\n");
100 "vserver-info " VERSION " -- returns information about vservers\n"
101 "This program is part of " PACKAGE_STRING "\n\n"
102 "Copyright (C) 2003 Enrico Scholz\n"
103 VERSION_COPYRIGHT_DISCLAIMER);
110 char const * delim = "";
113 WRITE_MSG(1, "Valid tags are: ");
114 for (i=0; i<DIM_OF(TAGS); ++i) {
116 WRITE_STR(1, TAGS[i].tag);
125 stringToTag(char const *str)
128 for (i=0; i<DIM_OF(TAGS); ++i)
129 if (strcmp(TAGS[i].tag, str)==0) return TAGS[i].val;
135 utsText2Tag(char const *str)
137 if (strcmp(str, "context") ==0) return vcVHI_CONTEXT;
138 else if (strcmp(str, "sysname") ==0) return vcVHI_SYSNAME;
139 else if (strcmp(str, "nodename") ==0) return vcVHI_NODENAME;
140 else if (strcmp(str, "release") ==0) return vcVHI_RELEASE;
141 else if (strcmp(str, "version") ==0) return vcVHI_VERSION;
142 else if (strcmp(str, "machine") ==0) return vcVHI_MACHINE;
143 else if (strcmp(str, "domainname")==0) return vcVHI_DOMAINNAME;
145 WRITE_MSG(2, "Unknown UTS tag\n");
153 int v = vc_get_version();
159 l = utilvserver_fmt_xulong(0, (unsigned int)v);
160 memcpy(buf, "0x00000000", 10);
161 utilvserver_fmt_xulong(buf+2+8-l, (unsigned int)v);
167 getXid(char *buf, char const *vserver)
169 pid_t pid = atoi(vserver);
170 xid_t xid = vc_get_task_xid(pid);
172 if (xid==VC_NOCTX) perror("vc_get_task_xid()");
174 utilvserver_fmt_long(buf, xid);
182 getInitPid_native(char *buf, xid_t xid)
184 struct vc_vx_info info;
186 if (vc_get_vx_info(xid, &info)==-1) perror("vc_get_vx_info()");
188 utilvserver_fmt_long(buf, info.initpid);
195 #if defined(VC_ENABLE_API_COMPAT) || defined(VC_ENABLE_API_V11)
197 selectPid(struct dirent const *ent)
199 return atoi(ent->d_name)!=0;
203 getInitPid_internal(pid_t pid, xid_t xid, pid_t *res)
208 size_t bufsize = utilvserver_getProcEntryBufsize();
212 pos = utilvserver_getProcEntry(pid, "\ns_context: ", buf, bufsize);
213 if (pos==0 && errno==EAGAIN) continue;
215 if (pos==0 || (xid_t)atoi(pos)!=xid) return false;
218 pos = strstr(buf, "\ninitpid: ");
221 pos += sizeof("\ninitpid: ")-1;
222 if (strncmp(pos, "none", 4)==0) *res = -1;
223 else *res = atoi(pos);
231 getInitPid_emulated(char *buf, xid_t xid)
233 struct dirent **namelist;
236 vc_new_s_context(1,0,0); // ignore errors silently...
237 n = scandir("/proc", &namelist, selectPid, alphasort);
238 if (n<0) perror("scandir()");
241 if (!getInitPid_internal(atoi(namelist[n]->d_name), xid, &pid)) continue;
243 utilvserver_fmt_long(buf, pid);
249 #endif // VC_ENABLE_API_COMPAT
252 getInitPid(char *buf, xid_t xid)
254 if (vc_isSupported(vcFEATURE_VINFO))
255 return getInitPid_native(buf, xid);
257 return getInitPid_emulated(buf, xid);
261 getInitPidPid(char *buf, char const *vserver)
263 struct vc_vx_info info;
264 pid_t pid = atoi(vserver);
265 xid_t xid = vc_get_task_xid(pid);
267 if (xid==VC_NOCTX) perror("vc_get_task_xid()");
268 else if (vc_get_vx_info(xid, &info)==-1) perror("vc_get_vx_info()");
270 utilvserver_fmt_long(buf, info.initpid);
278 getUTS(char *buf, xid_t xid, size_t argc, char * argv[])
281 vc_uts_type type = utsText2Tag(argv[0]);
282 if (vc_get_vhi_name(xid, type, buf, sizeof(buf)-1)==-1)
283 perror("vc_get_vhi_name()");
288 bool is_passed = false;
290 #define APPEND_UTS(TYPE) \
291 (((vc_get_vhi_name(xid, TYPE, tmp, sizeof(tmp)-1)!=-1) && (strcat(buf, tmp), strcat(buf, " "), is_passed=true)) || \
292 (strcat(buf, "??? ")))
294 if (APPEND_UTS(vcVHI_CONTEXT) &&
295 APPEND_UTS(vcVHI_SYSNAME) &&
296 APPEND_UTS(vcVHI_NODENAME) &&
297 APPEND_UTS(vcVHI_RELEASE) &&
298 APPEND_UTS(vcVHI_VERSION) &&
299 APPEND_UTS(vcVHI_MACHINE) &&
300 APPEND_UTS(vcVHI_DOMAINNAME) &&
304 perror("vc_get_vhi_name()");
312 printSysInfo(char *buf)
314 int fd = open(PKGLIBDIR "/FEATURES.txt", O_RDONLY);
323 WRITE_STR(1, uts.release);
328 if (getAPIVer(buf)) WRITE_STR(1, buf);
329 else WRITE_MSG(1, "???");
332 " util-vserver: " PACKAGE_VERSION "; " __DATE__ ", " __TIME__"\n"
337 WRITE_MSG(1, "FEATURES.txt not found\n");
339 off_t l = Elseek(fd, 0, SEEK_END);
340 Elseek(fd, 0, SEEK_SET);
343 EreadAll(fd, buf, l);
344 EwriteAll(1, buf, l);
353 getContext(char *buf, char const *vserver, bool allow_only_static)
355 xid_t xid = vc_getVserverCtx(vserver, vcCFG_AUTO,
356 allow_only_static, 0);
357 if (xid==VC_NOCTX) return 0;
359 utilvserver_fmt_long(buf, xid);
364 testFeature(int argc, char *argv[])
366 return (argc>0 && vc_isSupportedString(argv[0])) ? EXIT_SUCCESS : EXIT_FAILURE;
370 str2bool(char const *str)
372 return atoi(str)!=0 || strchr("yYtY", str[0])!=0;
376 execQuery(char const *vserver, VserverTag tag, int argc, char *argv[])
378 char const * res = 0;
379 char buf[sizeof(xid_t)*4 + 1024];
380 xid_t xid = *vserver!='\0' ? (xid_t)(atoi(vserver)) : VC_SAMECTX;
382 memset(buf, 0, sizeof buf);
384 case tgNAME : res = vc_getVserverName(vserver, vcCFG_AUTO); break;
386 res = vc_getVserverVdir(vserver, vcCFG_AUTO, argc>0 && atoi(argv[0]));
388 case tgCFGDIR : res = vc_getVserverCfgDir(vserver, vcCFG_AUTO); break;
390 res = vc_getVserverAppDir(vserver, vcCFG_AUTO, argc==0 ? "" : argv[0]);
394 res = (vc_getVserverCtx(vserver, vcCFG_AUTO, false, 0)==VC_NOCTX) ? 0 : "1";
397 case tgCONTEXT : res = getContext(buf, vserver,
398 argc==0 || str2bool(argv[0])); break;
399 case tgXID : res = getXid(buf, vserver); break;
400 case tgINITPID : res = getInitPid(buf, xid); break;
401 case tgINITPID_PID : res = getInitPidPid(buf, vserver); break;
402 case tgAPIVER : res = getAPIVer(buf); break;
403 case tgUTS : res = getUTS(buf, xid, argc, argv); break;
404 case tgSYSINFO : return printSysInfo(buf); break;
405 case tgFEATURE : return testFeature(argc,argv); break;
407 default : assert(false); abort(); // TODO
410 if (res==0) return EXIT_FAILURE;
416 int main(int argc, char *argv[])
419 char const * vserver;
423 int c = getopt_long(argc, argv, "ql", CMDLINE_OPTIONS, 0);
427 case 'h' : showHelp(1, argv[0], 0);
428 case 'v' : showVersion();
429 case 'l' : showTags();
430 case 'q' : quiet = true; break;
432 WRITE_MSG(2, "Try '");
433 WRITE_STR(2, argv[0]);
434 WRITE_MSG(2, " --help\" for more information.\n");
441 WRITE_MSG(2, "No vserver or tag give; please try '--help' for more information.\n");
445 vserver = argv[optind];
446 tag = stringToTag(argv[optind+1]);
449 WRITE_MSG(2, "Unknown tag; use '-l' to get list of valid tags\n");
454 int fd = Eopen("/dev/null", O_WRONLY, 0644);
459 return execQuery(vserver, tag, argc-(optind+2), argv+optind+2);