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
42 #define ENSC_WRAPPERS_VSERVER 1
45 typedef enum { tgNONE,tgCONTEXT, tgRUNNING,
46 tgVDIR, tgNAME, tgCFGDIR, tgAPPDIR,
48 tgINITPID, tgINITPID_PID,
49 tgXID, tgUTS, tgSYSINFO,
54 char const * const tag;
56 char const * const descr;
58 { "CONTEXT", tgCONTEXT, ("the current and/or assigned context; when an optinal argument "
59 "evaluates to false,only the current context will be printed") },
60 { "RUNNING", tgRUNNING, "gives out '1' when vserver is running; else, it fails without output" },
61 { "VDIR", tgVDIR, "gives out the root-directory of the vserver" },
62 { "NAME", tgNAME, "gives out the name of the vserver" },
63 { "CFGDIR", tgCFGDIR, "gives out the configuration directory of the vserver" },
64 { "APPDIR", tgAPPDIR, "gives out the name of the toplevel application cfgdir" },
65 { "INITPID", tgINITPID, "gives out the initpid of the given context" },
66 { "INITPID_PID", tgINITPID_PID, "gives out the initpid of the given pid" },
67 { "XID", tgXID, "gives out the context-id of the given pid" },
68 { "APIVER", tgAPIVER, "gives out the version of the kernel API" },
69 { "UTS", tgUTS, ("gives out an uts-entry; possible entries are "
70 "context, sysname, nodename, release, version, "
71 "machine and domainname") },
72 { "SYSINFO", tgSYSINFO, "gives out information about the systen" },
73 { "FEATURE", tgFEATURE, "returns 0 iff the queried feature is supported" },
76 int wrapper_exit_code = 1;
78 static struct option const
80 { "help", no_argument, 0, 'h' },
81 { "version", no_argument, 0, 'v' },
87 showHelp(int fd, char const *cmd, int res)
89 WRITE_MSG(fd, "Usage: ");
92 " [-ql] <vserver>|<pid>|<context> <tag>\n"
93 "Please report bugs to " PACKAGE_BUGREPORT "\n");
101 "vserver-info " VERSION " -- returns information about vservers\n"
102 "This program is part of " PACKAGE_STRING "\n\n"
103 "Copyright (C) 2003 Enrico Scholz\n"
104 VERSION_COPYRIGHT_DISCLAIMER);
111 char const * delim = "";
114 WRITE_MSG(1, "Valid tags are: ");
115 for (i=0; i<DIM_OF(TAGS); ++i) {
117 WRITE_STR(1, TAGS[i].tag);
126 stringToTag(char const *str)
129 for (i=0; i<DIM_OF(TAGS); ++i)
130 if (strcmp(TAGS[i].tag, str)==0) return TAGS[i].val;
136 utsText2Tag(char const *str)
138 if (strcmp(str, "context") ==0) return vcVHI_CONTEXT;
139 else if (strcmp(str, "sysname") ==0) return vcVHI_SYSNAME;
140 else if (strcmp(str, "nodename") ==0) return vcVHI_NODENAME;
141 else if (strcmp(str, "release") ==0) return vcVHI_RELEASE;
142 else if (strcmp(str, "version") ==0) return vcVHI_VERSION;
143 else if (strcmp(str, "machine") ==0) return vcVHI_MACHINE;
144 else if (strcmp(str, "domainname")==0) return vcVHI_DOMAINNAME;
146 WRITE_MSG(2, "Unknown UTS tag\n");
154 int v = vc_get_version();
160 l = utilvserver_fmt_xulong(0, (unsigned int)v);
161 memcpy(buf, "0x00000000", 10);
162 utilvserver_fmt_xulong(buf+2+8-l, (unsigned int)v);
168 getXid(char *buf, char const *vserver)
170 pid_t pid = atoi(vserver);
171 xid_t xid = vc_get_task_xid(pid);
173 if (xid==VC_NOCTX) perror("vc_get_task_xid()");
175 utilvserver_fmt_long(buf, xid);
183 getInitPid_native(char *buf, xid_t xid)
185 struct vc_vx_info info;
187 if (vc_get_vx_info(xid, &info)==-1) perror("vc_get_vx_info()");
189 utilvserver_fmt_long(buf, info.initpid);
196 #if defined(VC_ENABLE_API_COMPAT) || defined(VC_ENABLE_API_V11)
198 selectPid(struct dirent const *ent)
200 return atoi(ent->d_name)!=0;
204 getInitPid_internal(pid_t pid, xid_t xid, pid_t *res)
209 size_t bufsize = utilvserver_getProcEntryBufsize();
213 pos = utilvserver_getProcEntry(pid, "\ns_context: ", buf, bufsize);
214 if (pos==0 && errno==EAGAIN) continue;
216 if (pos==0 || (xid_t)atoi(pos)!=xid) return false;
219 pos = strstr(buf, "\ninitpid: ");
222 pos += sizeof("\ninitpid: ")-1;
223 if (strncmp(pos, "none", 4)==0) *res = -1;
224 else *res = atoi(pos);
232 getInitPid_emulated(char *buf, xid_t xid)
234 struct dirent **namelist;
237 vc_new_s_context(1,0,0); // ignore errors silently...
238 n = scandir("/proc", &namelist, selectPid, alphasort);
239 if (n<0) perror("scandir()");
242 if (!getInitPid_internal(atoi(namelist[n]->d_name), xid, &pid)) continue;
244 utilvserver_fmt_long(buf, pid);
250 #endif // VC_ENABLE_API_COMPAT
253 getInitPid(char *buf, xid_t xid)
255 if (vc_isSupported(vcFEATURE_VINFO))
256 return getInitPid_native(buf, xid);
258 return getInitPid_emulated(buf, xid);
262 getInitPidPid(char *buf, char const *vserver)
264 struct vc_vx_info info;
265 pid_t pid = atoi(vserver);
266 xid_t xid = vc_get_task_xid(pid);
268 if (xid==VC_NOCTX) perror("vc_get_task_xid()");
269 else if (vc_get_vx_info(xid, &info)==-1) perror("vc_get_vx_info()");
271 utilvserver_fmt_long(buf, info.initpid);
279 getUTS(char *buf, xid_t xid, size_t argc, char * argv[])
282 vc_uts_type type = utsText2Tag(argv[0]);
283 if (vc_get_vhi_name(xid, type, buf, sizeof(buf)-1)==-1)
284 perror("vc_get_vhi_name()");
289 bool is_passed = false;
291 #define APPEND_UTS(TYPE) \
292 (((vc_get_vhi_name(xid, TYPE, tmp, sizeof(tmp)-1)!=-1) && (strcat(buf, tmp), strcat(buf, " "), is_passed=true)) || \
293 (strcat(buf, "??? ")))
295 if (APPEND_UTS(vcVHI_CONTEXT) &&
296 APPEND_UTS(vcVHI_SYSNAME) &&
297 APPEND_UTS(vcVHI_NODENAME) &&
298 APPEND_UTS(vcVHI_RELEASE) &&
299 APPEND_UTS(vcVHI_VERSION) &&
300 APPEND_UTS(vcVHI_MACHINE) &&
301 APPEND_UTS(vcVHI_DOMAINNAME) &&
305 perror("vc_get_vhi_name()");
313 printSysInfo(char *buf)
315 int fd = open(PKGLIBDIR "/FEATURES.txt", O_RDONLY);
324 WRITE_STR(1, uts.release);
329 if (getAPIVer(buf)) WRITE_STR(1, buf);
330 else WRITE_MSG(1, "???");
333 " util-vserver: " PACKAGE_VERSION "; " __DATE__ ", " __TIME__"\n"
338 WRITE_MSG(1, "FEATURES.txt not found\n");
340 off_t l = Elseek(fd, 0, SEEK_END);
341 Elseek(fd, 0, SEEK_SET);
344 EreadAll(fd, buf, l);
345 EwriteAll(1, buf, l);
354 getContext(char *buf, char const *vserver, bool allow_only_static)
356 xid_t xid = vc_getVserverCtx(vserver, vcCFG_AUTO,
357 allow_only_static, 0);
358 if (xid==VC_NOCTX) return 0;
360 utilvserver_fmt_long(buf, xid);
365 testFeature(int argc, char *argv[])
367 return (argc>0 && vc_isSupportedString(argv[0])) ? EXIT_SUCCESS : EXIT_FAILURE;
371 str2bool(char const *str)
373 return atoi(str)!=0 || strchr("yYtY", str[0])!=0;
377 execQuery(char const *vserver, VserverTag tag, int argc, char *argv[])
379 char const * res = 0;
380 char buf[sizeof(xid_t)*4 + 1024];
381 xid_t xid = *vserver!='\0' ? vc_xidopt2xid(vserver,true,0) : VC_SAMECTX;
383 memset(buf, 0, sizeof buf);
385 case tgNAME : res = vc_getVserverName(vserver, vcCFG_AUTO); break;
387 res = vc_getVserverVdir(vserver, vcCFG_AUTO, argc>0 && atoi(argv[0]));
389 case tgCFGDIR : res = vc_getVserverCfgDir(vserver, vcCFG_AUTO); break;
391 res = vc_getVserverAppDir(vserver, vcCFG_AUTO, argc==0 ? "" : argv[0]);
395 res = (vc_getVserverCtx(vserver, vcCFG_AUTO, false, 0)==VC_NOCTX) ? 0 : "1";
398 case tgCONTEXT : res = getContext(buf, vserver,
399 argc==0 || str2bool(argv[0])); break;
400 case tgXID : res = getXid(buf, vserver); break;
401 case tgINITPID : res = getInitPid(buf, xid); break;
402 case tgINITPID_PID : res = getInitPidPid(buf, vserver); break;
403 case tgAPIVER : res = getAPIVer(buf); break;
404 case tgUTS : res = getUTS(buf, xid, argc, argv); break;
405 case tgSYSINFO : return printSysInfo(buf); break;
406 case tgFEATURE : return testFeature(argc,argv); break;
408 default : assert(false); abort(); // TODO
411 if (res==0) return EXIT_FAILURE;
417 int main(int argc, char *argv[])
420 char const * vserver;
424 int c = getopt_long(argc, argv, "ql", CMDLINE_OPTIONS, 0);
428 case 'h' : showHelp(1, argv[0], 0);
429 case 'v' : showVersion();
430 case 'l' : showTags();
431 case 'q' : quiet = true; break;
433 WRITE_MSG(2, "Try '");
434 WRITE_STR(2, argv[0]);
435 WRITE_MSG(2, " --help\" for more information.\n");
442 WRITE_MSG(2, "No vserver or tag give; please try '--help' for more information.\n");
446 vserver = argv[optind];
447 tag = stringToTag(argv[optind+1]);
450 WRITE_MSG(2, "Unknown tag; use '-l' to get list of valid tags\n");
455 int fd = Eopen("/dev/null", O_WRONLY, 0644);
460 return execQuery(vserver, tag, argc-(optind+2), argv+optind+2);