PostgreSQL工具pg_ctl实现代码

  使用开源软件最大的一个好处就是能够看到它的实现，便于更深入地学习，这几天正在看pg_ctl的源码，先贴出源码，随后的时间里对各函数一一分析,,顺便测试一下这个编辑器最多支持多少行。呵呵。

/*------------------------------------------------------------------------- * * pg_ctl --- start/stops/restarts the PostgreSQL server * * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group * * $PostgreSQL: pgsql/src/bin/pg_ctl/pg_ctl.c,v 1.122.2.1 2010/09/14 08:05:54 heikki Exp $ * *------------------------------------------------------------------------- */ #ifdef WIN32 /* * Need this to get defines for restricted tokens and jobs. And it * has to be set before any header from the Win32 API is loaded. */ #define _WIN32_WINNT 0x0501 #endif #include "postgres_fe.h" #include "libpq-fe.h" #include <locale.h> #include <signal.h> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #ifdef HAVE_SYS_RESOURCE_H #include <sys/time.h> #include <sys/resource.h> #endif #include "libpq/pqsignal.h" #include "getopt_long.h" #include "miscadmin.h" #if defined(__CYGWIN__) #include <sys/cygwin.h> #include <windows.h> /* Cygwin defines WIN32 in windows.h, but we don't want it. */ #undef WIN32 #endif /* PID can be negative for standalone backend */ typedef long pgpid_t; typedef enum { SMART_MODE, FAST_MODE, IMMEDIATE_MODE } ShutdownMode; typedef enum { NO_COMMAND = 0, INIT_COMMAND, START_COMMAND, STOP_COMMAND, RESTART_COMMAND, RELOAD_COMMAND, STATUS_COMMAND, KILL_COMMAND, REGISTER_COMMAND, UNREGISTER_COMMAND, RUN_AS_SERVICE_COMMAND } CtlCommand; #define DEFAULT_WAIT 60 static bool do_wait = false; static bool wait_set = false; static int wait_seconds = DEFAULT_WAIT; static bool silent_mode = false; static ShutdownMode shutdown_mode = SMART_MODE; static int sig = SIGTERM; /* default */ static CtlCommand ctl_command = NO_COMMAND; static char *pg_data = NULL; static char *pgdata_opt = NULL; static char *post_opts = NULL; static const char *progname; static char *log_file = NULL; static char *exec_path = NULL; static char *register_servicename = "PostgreSQL"; /* FIXME: + version ID? */ static char *register_username = NULL; static char *register_password = NULL; static char *argv0 = NULL; static bool allow_core_files = false; static void write_stderr(const char *fmt,...) /* This extension allows gcc to check the format string for consistency with the supplied arguments. */ __attribute__((format(printf, 1, 2))); static void *pg_malloc(size_t size); static char *xstrdup(const char *s); static void do_advice(void); static void do_help(void); static void set_mode(char *modeopt); static void set_sig(char *signame); static void do_init(void); static void do_start(void); static void do_stop(void); static void do_restart(void); static void do_reload(void); static void do_status(void); static void do_kill(pgpid_t pid); static void print_msg(const char *msg); #if defined(WIN32) || defined(__CYGWIN__) static bool pgwin32_IsInstalled(SC_HANDLE); static char *pgwin32_CommandLine(bool); static void pgwin32_doRegister(void); static void pgwin32_doUnregister(void); static void pgwin32_SetServiceStatus(DWORD); static void WINAPI pgwin32_ServiceHandler(DWORD); static void WINAPI pgwin32_ServiceMain(DWORD, LPTSTR *); static void pgwin32_doRunAsService(void); static int CreateRestrictedProcess(char *cmd, PROCESS_INFORMATION *processInfo, bool as_service); static SERVICE_STATUS status; static SERVICE_STATUS_HANDLE hStatus = (SERVICE_STATUS_HANDLE) 0; static HANDLE shutdownHandles[2]; static pid_t postmasterPID = -1; #define shutdownEvent shutdownHandles[0] #define postmasterProcess shutdownHandles[1] #endif static pgpid_t get_pgpid(void); static char **readfile(const char *path); static int start_postmaster(void); static void read_post_opts(void); static bool test_postmaster_connection(bool); static bool postmaster_is_alive(pid_t pid); static char postopts_file[MAXPGPATH]; static char pid_file[MAXPGPATH]; static char conf_file[MAXPGPATH]; static char backup_file[MAXPGPATH]; static char recovery_file[MAXPGPATH]; #if defined(HAVE_GETRLIMIT) && defined(RLIMIT_CORE) static void unlimit_core_size(void); #endif #if defined(WIN32) || defined(__CYGWIN__) static void write_eventlog(int level, const char *line) { static HANDLE evtHandle = INVALID_HANDLE_VALUE; if (evtHandle == INVALID_HANDLE_VALUE) { evtHandle = RegisterEventSource(NULL, "PostgreSQL"); if (evtHandle == NULL) { evtHandle = INVALID_HANDLE_VALUE; return; } } ReportEvent(evtHandle, level, 0, 0, /* All events are Id 0 */ NULL, 1, 0, &line, NULL); } #endif /* * Write errors to stderr (or by equal means when stderr is * not available). */ static void write_stderr(const char *fmt,...) { va_list ap; va_start(ap, fmt); #if !defined(WIN32) && !defined(__CYGWIN__) /* On Unix, we just fprintf to stderr */ vfprintf(stderr, fmt, ap); #else /* * On Win32, we print to stderr if running on a console, or write to * eventlog if running as a service */ if (!isatty(fileno(stderr))) /* Running as a service */ { char errbuf[2048]; /* Arbitrary size? */ vsnprintf(errbuf, sizeof(errbuf), fmt, ap); write_eventlog(EVENTLOG_ERROR_TYPE, errbuf); } else /* Not running as service, write to stderr */ vfprintf(stderr, fmt, ap); #endif va_end(ap); } /* * routines to check memory allocations and fail noisily. */ static void * pg_malloc(size_t size) { void *result; result = malloc(size); if (!result) { write_stderr(_("%s: out of memory\n"), progname); exit(1); } return result; } static char * xstrdup(const char *s) { char *result; result = strdup(s); if (!result) { write_stderr(_("%s: out of memory\n"), progname); exit(1); } return result; } /* * Given an already-localized string, print it to stdout unless the * user has specified that no messages should be printed. */ static void print_msg(const char *msg) { if (!silent_mode) { fputs(msg, stdout); fflush(stdout); } } static pgpid_t get_pgpid(void) { FILE *pidf; long pid; pidf = fopen(pid_file, "r"); if (pidf == NULL) { /* No pid file, not an error on startup */ if (errno == ENOENT) return 0; else { write_stderr(_("%s: could not open PID file \"%s\": %s\n"), progname, pid_file, strerror(errno)); exit(1); } } if (fscanf(pidf, "%ld", &pid) != 1) { write_stderr(_("%s: invalid data in PID file \"%s\"\n"), progname, pid_file); exit(1); } fclose(pidf); return (pgpid_t) pid; } /* * get the lines from a text file - return NULL if file can't be opened */ static char ** readfile(const char *path) { FILE *infile; int maxlength = 1, linelen = 0; int nlines = 0; char **result; char *buffer; int c; if ((infile = fopen(path, "r")) == NULL) return NULL; /* pass over the file twice - the first time to size the result */ while ((c = fgetc(infile)) != EOF) { linelen++; if (c == '\n') { nlines++; if (linelen > maxlength) maxlength = linelen; linelen = 0; } } /* handle last line without a terminating newline (yuck) */ if (linelen) nlines++; if (linelen > maxlength) maxlength = linelen; /* set up the result and the line buffer */ result = (char **) pg_malloc((nlines + 1) * sizeof(char *)); buffer = (char *) pg_malloc(maxlength + 1); /* now reprocess the file and store the lines */ rewind(infile); nlines = 0; while (fgets(buffer, maxlength + 1, infile) != NULL) result[nlines++] = xstrdup(buffer); fclose(infile); free(buffer); result[nlines] = NULL; return result; } /* * start/test/stop routines */ static int start_postmaster(void) { char cmd[MAXPGPATH]; #ifndef WIN32 /* * Since there might be quotes to handle here, it is easier simply to pass * everything to a shell to process them. */ if (log_file != NULL) snprintf(cmd, MAXPGPATH, SYSTEMQUOTE "\"%s\" %s%s < \"%s\" >> \"%s\" 2>&1 &" SYSTEMQUOTE, exec_path, pgdata_opt, post_opts, DEVNULL, log_file); else snprintf(cmd, MAXPGPATH, SYSTEMQUOTE "\"%s\" %s%s < \"%s\" 2>&1 &" SYSTEMQUOTE, exec_path, pgdata_opt, post_opts, DEVNULL); return system(cmd); #else /* WIN32 */ /* * On win32 we don't use system(). So we don't need to use & (which would * be START /B on win32). However, we still call the shell (CMD.EXE) with * it to handle redirection etc. */ PROCESS_INFORMATION pi; if (log_file != NULL) snprintf(cmd, MAXPGPATH, "CMD /C " SYSTEMQUOTE "\"%s\" %s%s < \"%s\" >> \"%s\" 2>&1" SYSTEMQUOTE, exec_path, pgdata_opt, post_opts, DEVNULL, log_file); else snprintf(cmd, MAXPGPATH, "CMD /C " SYSTEMQUOTE "\"%s\" %s%s < \"%s\" 2>&1" SYSTEMQUOTE, exec_path, pgdata_opt, post_opts, DEVNULL); if (!CreateRestrictedProcess(cmd, &pi, false)) return GetLastError(); CloseHandle(pi.hProcess); CloseHandle(pi.hThread); return 0; #endif /* WIN32 */ } /* * Find the pgport and try a connection * Note that the checkpoint parameter enables a Windows service control * manager checkpoint, it's got nothing to do with database checkpoints!! */ static bool test_postmaster_connection(bool do_checkpoint) { PGconn *conn; bool success = false; int i; char portstr[32]; char *p; char *q; char connstr[128]; /* Should be way more than enough! */ *portstr = '\0'; /* * Look in post_opts for a -p switch. * * This parsing code is not amazingly bright; it could for instance get * fooled if ' -p' occurs within a quoted argument value. Given that few * people pass complicated settings in post_opts, it's probably good * enough. */ for (p = post_opts; *p;) { /* advance past whitespace */ while (isspace((unsigned char) *p)) p++; if (strncmp(p, "-p", 2) == 0) { p += 2; /* advance past any whitespace/quoting */ while (isspace((unsigned char) *p) || *p == '\'' || *p == '"') p++; /* find end of value (not including any ending quote!) */ q = p; while (*q && !(isspace((unsigned char) *q) || *q == '\'' || *q == '"')) q++; /* and save the argument value */ strlcpy(portstr, p, Min((q - p) + 1, sizeof(portstr))); /* keep looking, maybe there is another -p */ p = q; } /* Advance to next whitespace */ while (*p && !isspace((unsigned char) *p)) p++; } /* * Search config file for a 'port' option. * * This parsing code isn't amazingly bright either, but it should be okay * for valid port settings. */ if (!*portstr) { char **optlines; optlines = readfile(conf_file); if (optlines != NULL) { for (; *optlines != NULL; optlines++) { p = *optlines; while (isspace((unsigned char) *p)) p++; if (strncmp(p, "port", 4) != 0) continue; p += 4; while (isspace((unsigned char) *p)) p++; if (*p != '=') continue; p++; /* advance past any whitespace/quoting */ while (isspace((unsigned char) *p) || *p == '\'' || *p == '"') p++; /* find end of value (not including any ending quote/comment!) */ q = p; while (*q && !(isspace((unsigned char) *q) || *q == '\'' || *q == '"' || *q == '#')) q++; /* and save the argument value */ strlcpy(portstr, p, Min((q - p) + 1, sizeof(portstr))); /* keep looking, maybe there is another */ } } } /* Check environment */ if (!*portstr && getenv("PGPORT") != NULL) strlcpy(portstr, getenv("PGPORT"), sizeof(portstr)); /* Else use compiled-in default */ if (!*portstr) snprintf(portstr, sizeof(portstr), "%d", DEF_PGPORT); /* * We need to set a connect timeout otherwise on Windows the SCM will * probably timeout first */ snprintf(connstr, sizeof(connstr), "dbname=postgres port=%s connect_timeout=5", portstr); for (i = 0; i < wait_seconds; i++) { if ((conn = PQconnectdb(connstr)) != NULL && (PQstatus(conn) == CONNECTION_OK || PQconnectionNeedsPassword(conn))) { PQfinish(conn); success = true; break; } else { PQfinish(conn); #if defined(WIN32) if (do_checkpoint) { /* * Increment the wait hint by 6 secs (connection timeout + * sleep) We must do this to indicate to the SCM that our * startup time is changing, otherwise it'll usually send a * stop signal after 20 seconds, despite incrementing the * checkpoint counter. */ status.dwWaitHint += 6000; status.dwCheckPoint++; SetServiceStatus(hStatus, (LPSERVICE_STATUS) &status); } else #endif print_msg("."); pg_usleep(1000000); /* 1 sec */ } } return success; } #if defined(HAVE_GETRLIMIT) && defined(RLIMIT_CORE) static void unlimit_core_size(void) { struct rlimit lim; getrlimit(RLIMIT_CORE, &lim); if (lim.rlim_max == 0) { write_stderr(_("%s: cannot set core file size limit; disallowed by hard limit\n"), progname); return; } else if (lim.rlim_max == RLIM_INFINITY || lim.rlim_cur < lim.rlim_max) { lim.rlim_cur = lim.rlim_max; setrlimit(RLIMIT_CORE, &lim); } } #endif static void read_post_opts(void) { if (post_opts == NULL) { post_opts = ""; /* default */ if (ctl_command == RESTART_COMMAND) { char **optlines; optlines = readfile(postopts_file); if (optlines == NULL) { write_stderr(_("%s: could not read file \"%s\"\n"), progname, postopts_file); exit(1); } else if (optlines[0] == NULL || optlines[1] != NULL) { write_stderr(_("%s: option file \"%s\" must have exactly one line\n"), progname, postopts_file); exit(1); } else { int len; char *optline; char *arg1; optline = optlines[0]; /* trim off line endings */ len = strcspn(optline, "\r\n"); optline[len] = '\0'; /* * Are we at the first option, as defined by space and * double-quote? */ if ((arg1 = strstr(optline, " \"")) != NULL) { *arg1 = '\0'; /* terminate so we get only program * name */ post_opts = arg1 + 1; /* point past whitespace */ } if (exec_path == NULL) exec_path = optline; } } } } static char * find_other_exec_or_die(const char *argv0, const char *target, const char *versionstr) { int ret; char *found_path; found_path = pg_malloc(MAXPGPATH); if ((ret = find_other_exec(argv0, target, versionstr, found_path)) < 0) { char full_path[MAXPGPATH]; if (find_my_exec(argv0, full_path) < 0) strlcpy(full_path, progname, sizeof(full_path)); if (ret == -1) write_stderr(_("The program \"%s\" is needed by %s " "but was not found in the\n" "same directory as \"%s\".\n" "Check your installation.\n"), target, progname, full_path); else write_stderr(_("The program \"%s\" was found by \"%s\"\n" "but was not the same version as %s.\n" "Check your installation.\n"), target, full_path, progname); exit(1); } return found_path; } static void do_init(void) { char cmd[MAXPGPATH]; if (exec_path == NULL) exec_path = find_other_exec_or_die(argv0, "initdb", "initdb (PostgreSQL) " PG_VERSION "\n"); if (pgdata_opt == NULL) pgdata_opt = ""; if (post_opts == NULL) post_opts = ""; if (!silent_mode) snprintf(cmd, MAXPGPATH, SYSTEMQUOTE "\"%s\" %s%s" SYSTEMQUOTE, exec_path, pgdata_opt, post_opts); else snprintf(cmd, MAXPGPATH, SYSTEMQUOTE "\"%s\" %s%s > \"%s\"" SYSTEMQUOTE, exec_path, pgdata_opt, post_opts, DEVNULL); if (system(cmd) != 0) { write_stderr(_("%s: database system initialization failed\n"), progname); exit(1); } } static void do_start(void) { pgpid_t pid; pgpid_t old_pid = 0; int exitcode; if (ctl_command != RESTART_COMMAND) { old_pid = get_pgpid(); if (old_pid != 0) write_stderr(_("%s: another server might be running; " "trying to start server anyway\n"), progname); } read_post_opts(); /* No -D or -D already added during server start */ if (ctl_command == RESTART_COMMAND || pgdata_opt == NULL) pgdata_opt = ""; if (exec_path == NULL) exec_path = find_other_exec_or_die(argv0, "postgres", PG_BACKEND_VERSIONSTR); #if defined(HAVE_GETRLIMIT) && defined(RLIMIT_CORE) if (allow_core_files) unlimit_core_size(); #endif /* * If possible, tell the postmaster our parent shell's PID (see the * comments in CreateLockFile() for motivation). Windows hasn't got * getppid() unfortunately. */ #ifndef WIN32 { static char env_var[32]; snprintf(env_var, sizeof(env_var), "PG_GRANDPARENT_PID=%d", (int) getppid()); putenv(env_var); } #endif exitcode = start_postmaster(); if (exitcode != 0) { write_stderr(_("%s: could not start server: exit code was %d\n"), progname, exitcode); exit(1); } if (old_pid != 0) { pg_usleep(1000000); pid = get_pgpid(); if (pid == old_pid) { write_stderr(_("%s: could not start server\n" "Examine the log output.\n"), progname); exit(1); } } if (do_wait) { print_msg(_("waiting for server to start...")); if (test_postmaster_connection(false) == false) { write_stderr(_("%s: could not start server\n" "Examine the log output.\n"), progname); exit(1); } else { print_msg(_(" done\n")); print_msg(_("server started\n")); } } else print_msg(_("server starting\n")); } static void do_stop(void) { int cnt; pgpid_t pid; struct stat statbuf; pid = get_pgpid(); if (pid == 0) /* no pid file */ { write_stderr(_("%s: PID file \"%s\" does not exist\n"), progname, pid_file); write_stderr(_("Is server running?\n")); exit(1); } else if (pid < 0) /* standalone backend, not postmaster */ { pid = -pid; write_stderr(_("%s: cannot stop server; " "single-user server is running (PID: %ld)\n"), progname, pid); exit(1); } if (kill((pid_t) pid, sig) != 0) { write_stderr(_("%s: could not send stop signal (PID: %ld): %s\n"), progname, pid, strerror(errno)); exit(1); } if (!do_wait) { print_msg(_("server shutting down\n")); return; } else { /* * If backup_label exists, an online backup is running. Warn the * user that smart shutdown will wait for it to finish. However, if * recovery.conf is also present, we're recovering from an online * backup instead of performing one. */ if (shutdown_mode == SMART_MODE && stat(backup_file, &statbuf) == 0 && stat(recovery_file, &statbuf) != 0) { print_msg(_("WARNING: online backup mode is active\n" "Shutdown will not complete until pg_stop_backup() is called.\n\n")); } print_msg(_("waiting for server to shut down...")); for (cnt = 0; cnt < wait_seconds; cnt++) { if ((pid = get_pgpid()) != 0) { print_msg("."); pg_usleep(1000000); /* 1 sec */ } else break; } if (pid != 0) /* pid file still exists */ { print_msg(_(" failed\n")); write_stderr(_("%s: server does not shut down\n"), progname); exit(1); } print_msg(_(" done\n")); print_msg(_("server stopped\n")); } } /* * restart/reload routines */ static void do_restart(void) { int cnt; pgpid_t pid; struct stat statbuf; pid = get_pgpid(); if (pid == 0) /* no pid file */ { write_stderr(_("%s: PID file \"%s\" does not exist\n"), progname, pid_file); write_stderr(_("Is server running?\n")); write_stderr(_("starting server anyway\n")); do_start(); return; } else if (pid < 0) /* standalone backend, not postmaster */ { pid = -pid; if (postmaster_is_alive((pid_t) pid)) { write_stderr(_("%s: cannot restart server; " "single-user server is running (PID: %ld)\n"), progname, pid); write_stderr(_("Please terminate the single-user server and try again.\n")); exit(1); } } if (postmaster_is_alive((pid_t) pid)) { if (kill((pid_t) pid, sig) != 0) { write_stderr(_("%s: could not send stop signal (PID: %ld): %s\n"), progname, pid, strerror(errno)); exit(1); } /* * If backup_label exists, an online backup is running. Warn the * user that smart shutdown will wait for it to finish. However, if * recovery.conf is also present, we're recovering from an online * backup instead of performing one. */ if (shutdown_mode == SMART_MODE && stat(backup_file, &statbuf) == 0 && stat(recovery_file, &statbuf) != 0) { print_msg(_("WARNING: online backup mode is active\n" "Shutdown will not complete until pg_stop_backup() is called.\n\n")); } print_msg(_("waiting for server to shut down...")); /* always wait for restart */ for (cnt = 0; cnt < wait_seconds; cnt++) { if ((pid = get_pgpid()) != 0) { print_msg("."); pg_usleep(1000000); /* 1 sec */ } else break; } if (pid != 0) /* pid file still exists */ { print_msg(_(" failed\n")); write_stderr(_("%s: server does not shut down\n"), progname); exit(1); } print_msg(_(" done\n")); print_msg(_("server stopped\n")); } else { write_stderr(_("%s: old server process (PID: %ld) seems to be gone\n"), progname, pid); write_stderr(_("starting server anyway\n")); } do_start(); } static void do_reload(void) { pgpid_t pid; pid = get_pgpid(); if (pid == 0) /* no pid file */ { write_stderr(_("%s: PID file \"%s\" does not exist\n"), progname, pid_file); write_stderr(_("Is server running?\n")); exit(1); } else if (pid < 0) /* standalone backend, not postmaster */ { pid = -pid; write_stderr(_("%s: cannot reload server; " "single-user server is running (PID: %ld)\n"), progname, pid); write_stderr(_("Please terminate the single-user server and try again.\n")); exit(1); } if (kill((pid_t) pid, sig) != 0) { write_stderr(_("%s: could not send reload signal (PID: %ld): %s\n"), progname, pid, strerror(errno)); exit(1); } print_msg(_("server signaled\n")); } /* * utility routines */ static bool postmaster_is_alive(pid_t pid) { /* * Test to see if the process is still there. Note that we do not * consider an EPERM failure to mean that the process is still there; * EPERM must mean that the given PID belongs to some other userid, and * considering the permissions on $PGDATA, that means it's not the * postmaster we are after. * * Don't believe that our own PID or parent shell's PID is the postmaster, * either. (Windows hasn't got getppid(), though.) */ if (pid == getpid()) return false; #ifndef WIN32 if (pid == getppid()) return false; #endif if (kill(pid, 0) == 0) return true; return false; } static void do_status(void) { pgpid_t pid; pid = get_pgpid(); if (pid != 0) /* 0 means no pid file */ { if (pid < 0) /* standalone backend */ { pid = -pid; if (postmaster_is_alive((pid_t) pid)) { printf(_("%s: single-user server is running (PID: %ld)\n"), progname, pid); return; } } else /* postmaster */ { if (postmaster_is_alive((pid_t) pid)) { char **optlines; printf(_("%s: server is running (PID: %ld)\n"), progname, pid); optlines = readfile(postopts_file); if (optlines != NULL) for (; *optlines != NULL; optlines++) fputs(*optlines, stdout); return; } } } printf(_("%s: no server running\n"), progname); exit(1); } static void do_kill(pgpid_t pid) { if (kill((pid_t) pid, sig) != 0) { write_stderr(_("%s: could not send signal %d (PID: %ld): %s\n"), progname, sig, pid, strerror(errno)); exit(1); } } #if defined(WIN32) || defined(__CYGWIN__) static bool pgwin32_IsInstalled(SC_HANDLE hSCM) { SC_HANDLE hService = OpenService(hSCM, register_servicename, SERVICE_QUERY_CONFIG); bool bResult = (hService != NULL); if (bResult) CloseServiceHandle(hService); return bResult; } static char * pgwin32_CommandLine(bool registration) { static char cmdLine[MAXPGPATH]; int ret; #ifdef __CYGWIN__ char buf[MAXPGPATH]; #endif if (registration) { ret = find_my_exec(argv0, cmdLine); if (ret != 0) { write_stderr(_("%s: could not find own program executable\n"), progname); exit(1); } } else { ret = find_other_exec(argv0, "postgres", PG_BACKEND_VERSIONSTR, cmdLine); if (ret != 0) { write_stderr(_("%s: could not find postgres program executable\n"), progname); exit(1); } } #ifdef __CYGWIN__ /* need to convert to windows path */ #if CYGWIN_VERSION_DLL_MAJOR >= 1007 cygwin_conv_path(CCP_POSIX_TO_WIN_A, cmdLine, buf, sizeof(buf)); #else cygwin_conv_to_full_win32_path(cmdLine, buf); #endif strcpy(cmdLine, buf); #endif if (registration) { if (pg_strcasecmp(cmdLine + strlen(cmdLine) - 4, ".exe")) { /* If commandline does not end in .exe, append it */ strcat(cmdLine, ".exe"); } strcat(cmdLine, " runservice -N \""); strcat(cmdLine, register_servicename); strcat(cmdLine, "\""); } if (pg_data) { strcat(cmdLine, " -D \""); strcat(cmdLine, pg_data); strcat(cmdLine, "\""); } if (registration && do_wait) strcat(cmdLine, " -w"); if (registration && wait_seconds != DEFAULT_WAIT) /* concatenate */ sprintf(cmdLine + strlen(cmdLine), " -t %d", wait_seconds); if (post_opts) { strcat(cmdLine, " "); if (registration) strcat(cmdLine, " -o \""); strcat(cmdLine, post_opts); if (registration) strcat(cmdLine, "\""); } return cmdLine; } static void pgwin32_doRegister(void) { SC_HANDLE hService; SC_HANDLE hSCM = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); if (hSCM == NULL) { write_stderr(_("%s: could not open service manager\n"), progname); exit(1); } if (pgwin32_IsInstalled(hSCM)) { CloseServiceHandle(hSCM); write_stderr(_("%s: service \"%s\" already registered\n"), progname, register_servicename); exit(1); } if ((hService = CreateService(hSCM, register_servicename, register_servicename, SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL, pgwin32_CommandLine(true), NULL, NULL, "RPCSS\0", register_username, register_password)) == NULL) { CloseServiceHandle(hSCM); write_stderr(_("%s: could not register service \"%s\": error code %d\n"), progname, register_servicename, (int) GetLastError()); exit(1); } CloseServiceHandle(hService); CloseServiceHandle(hSCM); } static void pgwin32_doUnregister(void) { SC_HANDLE hService; SC_HANDLE hSCM = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); if (hSCM == NULL) { write_stderr(_("%s: could not open service manager\n"), progname); exit(1); } if (!pgwin32_IsInstalled(hSCM)) { CloseServiceHandle(hSCM); write_stderr(_("%s: service \"%s\" not registered\n"), progname, register_servicename); exit(1); } if ((hService = OpenService(hSCM, register_servicename, DELETE)) == NULL) { CloseServiceHandle(hSCM); write_stderr(_("%s: could not open service \"%s\": error code %d\n"), progname, register_servicename, (int) GetLastError()); exit(1); } if (!DeleteService(hService)) { CloseServiceHandle(hService); CloseServiceHandle(hSCM); write_stderr(_("%s: could not unregister service \"%s\": error code %d\n"), progname, register_servicename, (int) GetLastError()); exit(1); } CloseServiceHandle(hService); CloseServiceHandle(hSCM); } static void pgwin32_SetServiceStatus(DWORD currentState) { status.dwCurrentState = currentState; SetServiceStatus(hStatus, (LPSERVICE_STATUS) &status); } static void WINAPI pgwin32_ServiceHandler(DWORD request) { switch (request) { case SERVICE_CONTROL_STOP: case SERVICE_CONTROL_SHUTDOWN: /* * We only need a short wait hint here as it just needs to wait * for the next checkpoint. They occur every 5 seconds during * shutdown */ status.dwWaitHint = 10000; pgwin32_SetServiceStatus(SERVICE_STOP_PENDING); SetEvent(shutdownEvent); return; case SERVICE_CONTROL_PAUSE: /* Win32 config reloading */ status.dwWaitHint = 5000; kill(postmasterPID, SIGHUP); return; /* FIXME: These could be used to replace other signals etc */ case SERVICE_CONTROL_CONTINUE: case SERVICE_CONTROL_INTERROGATE: default: break; } } static void WINAPI pgwin32_ServiceMain(DWORD argc, LPTSTR *argv) { PROCESS_INFORMATION pi; DWORD ret; DWORD check_point_start; /* Initialize variables */ status.dwWin32ExitCode = S_OK; status.dwCheckPoint = 0; status.dwWaitHint = 60000; status.dwServiceType = SERVICE_WIN32_OWN_PROCESS; status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN | SERVICE_ACCEPT_PAUSE_CONTINUE; status.dwServiceSpecificExitCode = 0; status.dwCurrentState = SERVICE_START_PENDING; memset(&pi, 0, sizeof(pi)); read_post_opts(); /* Register the control request handler */ if ((hStatus = RegisterServiceCtrlHandler(register_servicename, pgwin32_ServiceHandler)) == (SERVICE_STATUS_HANDLE) 0) return; if ((shutdownEvent = CreateEvent(NULL, true, false, NULL)) == NULL) return; /* Start the postmaster */ pgwin32_SetServiceStatus(SERVICE_START_PENDING); if (!CreateRestrictedProcess(pgwin32_CommandLine(false), &pi, true)) { pgwin32_SetServiceStatus(SERVICE_STOPPED); return; } postmasterPID = pi.dwProcessId; postmasterProcess = pi.hProcess; CloseHandle(pi.hThread); if (do_wait) { write_eventlog(EVENTLOG_INFORMATION_TYPE, _("Waiting for server startup...\n")); if (test_postmaster_connection(true) == false) { write_eventlog(EVENTLOG_INFORMATION_TYPE, _("Timed out waiting for server startup\n")); pgwin32_SetServiceStatus(SERVICE_STOPPED); return; } write_eventlog(EVENTLOG_INFORMATION_TYPE, _("Server started and accepting connections\n")); } /* * Save the checkpoint value as it might have been incremented in * test_postmaster_connection */ check_point_start = status.dwCheckPoint; pgwin32_SetServiceStatus(SERVICE_RUNNING); /* Wait for quit... */ ret = WaitForMultipleObjects(2, shutdownHandles, FALSE, INFINITE); pgwin32_SetServiceStatus(SERVICE_STOP_PENDING); switch (ret) { case WAIT_OBJECT_0: /* shutdown event */ kill(postmasterPID, SIGINT); /* * Increment the checkpoint and try again Abort after 12 * checkpoints as the postmaster has probably hung */ while (WaitForSingleObject(postmasterProcess, 5000) == WAIT_TIMEOUT && status.dwCheckPoint < 12) status.dwCheckPoint++; break; case (WAIT_OBJECT_0 + 1): /* postmaster went down */ break; default: /* shouldn't get here? */ break; } CloseHandle(shutdownEvent); CloseHandle(postmasterProcess); pgwin32_SetServiceStatus(SERVICE_STOPPED); } static void pgwin32_doRunAsService(void) { SERVICE_TABLE_ENTRY st[] = {{register_servicename, pgwin32_ServiceMain}, {NULL, NULL}}; if (StartServiceCtrlDispatcher(st) == 0) { write_stderr(_("%s: could not start service \"%s\": error code %d\n"), progname, register_servicename, (int) GetLastError()); exit(1); } } /* * Mingw headers are incomplete, and so are the libraries. So we have to load * a whole lot of API functions dynamically. Since we have to do this anyway, * also load the couple of functions that *do* exist in minwg headers but not * on NT4. That way, we don't break on NT4. */ typedef BOOL (WINAPI * __CreateRestrictedToken) (HANDLE, DWORD, DWORD, PSID_AND_ATTRIBUTES, DWORD, PLUID_AND_ATTRIBUTES, DWORD, PSID_AND_ATTRIBUTES, PHANDLE); typedef BOOL (WINAPI * __IsProcessInJob) (HANDLE, HANDLE, PBOOL); typedef HANDLE (WINAPI * __CreateJobObject) (LPSECURITY_ATTRIBUTES, LPCTSTR); typedef BOOL (WINAPI * __SetInformationJobObject) (HANDLE, JOBOBJECTINFOCLASS, LPVOID, DWORD); typedef BOOL (WINAPI * __AssignProcessToJobObject) (HANDLE, HANDLE); typedef BOOL (WINAPI * __QueryInformationJobObject) (HANDLE, JOBOBJECTINFOCLASS, LPVOID, DWORD, LPDWORD); /* Windows API define missing from MingW headers */ #define DISABLE_MAX_PRIVILEGE 0x1 /* * Create a restricted token, a job object sandbox, and execute the specified * process with it. * * Returns 0 on success, non-zero on failure, same as CreateProcess(). * * On NT4, or any other system not containing the required functions, will * launch the process under the current token without doing any modifications. * * NOTE! Job object will only work when running as a service, because it's * automatically destroyed when pg_ctl exits. */ static int CreateRestrictedProcess(char *cmd, PROCESS_INFORMATION *processInfo, bool as_service) { int r; BOOL b; STARTUPINFO si; HANDLE origToken; HANDLE restrictedToken; SID_IDENTIFIER_AUTHORITY NtAuthority = {SECURITY_NT_AUTHORITY}; SID_AND_ATTRIBUTES dropSids[2]; /* Functions loaded dynamically */ __CreateRestrictedToken _CreateRestrictedToken = NULL; __IsProcessInJob _IsProcessInJob = NULL; __CreateJobObject _CreateJobObject = NULL; __SetInformationJobObject _SetInformationJobObject = NULL; __AssignProcessToJobObject _AssignProcessToJobObject = NULL; __QueryInformationJobObject _QueryInformationJobObject = NULL; HANDLE Kernel32Handle; HANDLE Advapi32Handle; ZeroMemory(&si, sizeof(si)); si.cb = sizeof(si); Advapi32Handle = LoadLibrary("ADVAPI32.DLL"); if (Advapi32Handle != NULL) { _CreateRestrictedToken = (__CreateRestrictedToken) GetProcAddress(Advapi32Handle, "CreateRestrictedToken"); } if (_CreateRestrictedToken == NULL) { /* * NT4 doesn't have CreateRestrictedToken, so just call ordinary * CreateProcess */ write_stderr("WARNING: cannot create restricted tokens on this platform\n"); if (Advapi32Handle != NULL) FreeLibrary(Advapi32Handle); return CreateProcess(NULL, cmd, NULL, NULL, FALSE, 0, NULL, NULL, &si, processInfo); } /* Open the current token to use as a base for the restricted one */ if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &origToken)) { write_stderr("Failed to open process token: %lu\n", GetLastError()); return 0; } /* Allocate list of SIDs to remove */ ZeroMemory(&dropSids, sizeof(dropSids)); if (!AllocateAndInitializeSid(&NtAuthority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &dropSids[0].Sid) || !AllocateAndInitializeSid(&NtAuthority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_POWER_USERS, 0, 0, 0, 0, 0, 0, &dropSids[1].Sid)) { write_stderr("Failed to allocate SIDs: %lu\n", GetLastError()); return 0; } b = _CreateRestrictedToken(origToken, DISABLE_MAX_PRIVILEGE, sizeof(dropSids) / sizeof(dropSids[0]), dropSids, 0, NULL, 0, NULL, &restrictedToken); FreeSid(dropSids[1].Sid); FreeSid(dropSids[0].Sid); CloseHandle(origToken); FreeLibrary(Advapi32Handle); if (!b) { write_stderr("Failed to create restricted token: %lu\n", GetLastError()); return 0; } #ifndef __CYGWIN__ AddUserToTokenDacl(restrictedToken); #endif r = CreateProcessAsUser(restrictedToken, NULL, cmd, NULL, NULL, TRUE, CREATE_SUSPENDED, NULL, NULL, &si, processInfo); Kernel32Handle = LoadLibrary("KERNEL32.DLL"); if (Kernel32Handle != NULL) { _IsProcessInJob = (__IsProcessInJob) GetProcAddress(Kernel32Handle, "IsProcessInJob"); _CreateJobObject = (__CreateJobObject) GetProcAddress(Kernel32Handle, "CreateJobObjectA"); _SetInformationJobObject = (__SetInformationJobObject) GetProcAddress(Kernel32Handle, "SetInformationJobObject"); _AssignProcessToJobObject = (__AssignProcessToJobObject) GetProcAddress(Kernel32Handle, "AssignProcessToJobObject"); _QueryInformationJobObject = (__QueryInformationJobObject) GetProcAddress(Kernel32Handle, "QueryInformationJobObject"); } /* Verify that we found all functions */ if (_IsProcessInJob == NULL || _CreateJobObject == NULL || _SetInformationJobObject == NULL || _AssignProcessToJobObject == NULL || _QueryInformationJobObject == NULL) { /* * IsProcessInJob() is not available on < WinXP, so there is no need * to log the error every time in that case */ OSVERSIONINFO osv; osv.dwOSVersionInfoSize = sizeof(osv); if (!GetVersionEx(&osv) || /* could not get version */ (osv.dwMajorVersion == 5 && osv.dwMinorVersion > 0) || /* 5.1=xp, 5.2=2003, etc */ osv.dwMajorVersion > 5) /* anything newer should have the API */ /* * Log error if we can't get version, or if we're on WinXP/2003 or * newer */ write_stderr("WARNING: could not locate all job object functions in system API\n"); } else { BOOL inJob; if (_IsProcessInJob(processInfo->hProcess, NULL, &inJob)) { if (!inJob) { /* * Job objects are working, and the new process isn't in one, * so we can create one safely. If any problems show up when * setting it, we're going to ignore them. */ HANDLE job; char jobname[128]; sprintf(jobname, "PostgreSQL_%lu", processInfo->dwProcessId); job = _CreateJobObject(NULL, jobname); if (job) { JOBOBJECT_BASIC_LIMIT_INFORMATION basicLimit; JOBOBJECT_BASIC_UI_RESTRICTIONS uiRestrictions; JOBOBJECT_SECURITY_LIMIT_INFORMATION securityLimit; OSVERSIONINFO osv; ZeroMemory(&basicLimit, sizeof(basicLimit)); ZeroMemory(&uiRestrictions, sizeof(uiRestrictions)); ZeroMemory(&securityLimit, sizeof(securityLimit)); basicLimit.LimitFlags = JOB_OBJECT_LIMIT_DIE_ON_UNHANDLED_EXCEPTION | JOB_OBJECT_LIMIT_PRIORITY_CLASS; basicLimit.PriorityClass = NORMAL_PRIORITY_CLASS; _SetInformationJobObject(job, JobObjectBasicLimitInformation, &basicLimit, sizeof(basicLimit)); uiRestrictions.UIRestrictionsClass = JOB_OBJECT_UILIMIT_DESKTOP | JOB_OBJECT_UILIMIT_DISPLAYSETTINGS | JOB_OBJECT_UILIMIT_EXITWINDOWS | JOB_OBJECT_UILIMIT_READCLIPBOARD | JOB_OBJECT_UILIMIT_SYSTEMPARAMETERS | JOB_OBJECT_UILIMIT_WRITECLIPBOARD; if (as_service) { osv.dwOSVersionInfoSize = sizeof(osv); if (!GetVersionEx(&osv) || osv.dwMajorVersion < 6 || (osv.dwMajorVersion == 6 && osv.dwMinorVersion == 0)) { /* * On Windows 7 (and presumably later), * JOB_OBJECT_UILIMIT_HANDLES prevents us from * starting as a service. So we only enable it on * Vista and earlier (version <= 6.0) */ uiRestrictions.UIRestrictionsClass |= JOB_OBJECT_UILIMIT_HANDLES; } } _SetInformationJobObject(job, JobObjectBasicUIRestrictions, &uiRestrictions, sizeof(uiRestrictions)); securityLimit.SecurityLimitFlags = JOB_OBJECT_SECURITY_NO_ADMIN | JOB_OBJECT_SECURITY_ONLY_TOKEN; securityLimit.JobToken = restrictedToken; _SetInformationJobObject(job, JobObjectSecurityLimitInformation, &securityLimit, sizeof(securityLimit)); _AssignProcessToJobObject(job, processInfo->hProcess); } } } } CloseHandle(restrictedToken); ResumeThread(processInfo->hThread); FreeLibrary(Kernel32Handle); /* * We intentionally don't close the job object handle, because we want the * object to live on until pg_ctl shuts down. */ return r; } #endif static void do_advice(void) { write_stderr(_("Try \"%s --help\" for more information.\n"), progname); } static void do_help(void) { printf(_("%s is a utility to start, stop, restart, reload configuration files,\n" "report the status of a PostgreSQL server, or signal a PostgreSQL process.\n\n"), progname); printf(_("Usage:\n")); printf(_(" %s init[db] [-D DATADIR] [-s] [-o \"OPTIONS\"]\n"), progname); printf(_(" %s start [-w] [-t SECS] [-D DATADIR] [-s] [-l FILENAME] [-o \"OPTIONS\"]\n"), progname); printf(_(" %s stop [-W] [-t SECS] [-D DATADIR] [-s] [-m SHUTDOWN-MODE]\n"), progname); printf(_(" %s restart [-w] [-t SECS] [-D DATADIR] [-s] [-m SHUTDOWN-MODE]\n" " [-o \"OPTIONS\"]\n"), progname); printf(_(" %s reload [-D DATADIR] [-s]\n"), progname); printf(_(" %s status [-D DATADIR]\n"), progname); printf(_(" %s kill SIGNALNAME PID\n"), progname); #if defined(WIN32) || defined(__CYGWIN__) printf(_(" %s register [-N SERVICENAME] [-U USERNAME] [-P PASSWORD] [-D DATADIR]\n" " [-w] [-t SECS] [-o \"OPTIONS\"]\n"), progname); printf(_(" %s unregister [-N SERVICENAME]\n"), progname); #endif printf(_("\nCommon options:\n")); printf(_(" -D, --pgdata DATADIR location of the database storage area\n")); printf(_(" -s, --silent only print errors, no informational messages\n")); printf(_(" -t SECS seconds to wait when using -w option\n")); printf(_(" -w wait until operation completes\n")); printf(_(" -W do not wait until operation completes\n")); printf(_(" --help show this help, then exit\n")); printf(_(" --version output version information, then exit\n")); printf(_("(The default is to wait for shutdown, but not for start or restart.)\n\n")); printf(_("If the -D option is omitted, the environment variable PGDATA is used.\n")); printf(_("\nOptions for start or restart:\n")); #if defined(HAVE_GETRLIMIT) && defined(RLIMIT_CORE) printf(_(" -c, --core-files allow postgres to produce core files\n")); #else printf(_(" -c, --core-files not applicable on this platform\n")); #endif printf(_(" -l, --log FILENAME write (or append) server log to FILENAME\n")); printf(_(" -o OPTIONS command line options to pass to postgres\n" " (PostgreSQL server executable) or initdb\n")); printf(_(" -p PATH-TO-POSTGRES normally not necessary\n")); printf(_("\nOptions for stop or restart:\n")); printf(_(" -m SHUTDOWN-MODE can be \"smart\", \"fast\", or \"immediate\"\n")); printf(_("\nShutdown modes are:\n")); printf(_(" smart quit after all clients have disconnected\n")); printf(_(" fast quit directly, with proper shutdown\n")); printf(_(" immediate quit without complete shutdown; will lead to recovery on restart\n")); printf(_("\nAllowed signal names for kill:\n")); printf(" HUP INT QUIT ABRT TERM USR1 USR2\n"); #if defined(WIN32) || defined(__CYGWIN__) printf(_("\nOptions for register and unregister:\n")); printf(_(" -N SERVICENAME service name with which to register PostgreSQL server\n")); printf(_(" -P PASSWORD password of account to register PostgreSQL server\n")); printf(_(" -U USERNAME user name of account to register PostgreSQL server\n")); #endif printf(_("\nReport bugs to <pgsql-bugs@postgresql.org>.\n")); } static void set_mode(char *modeopt) { if (strcmp(modeopt, "s") == 0 || strcmp(modeopt, "smart") == 0) { shutdown_mode = SMART_MODE; sig = SIGTERM; } else if (strcmp(modeopt, "f") == 0 || strcmp(modeopt, "fast") == 0) { shutdown_mode = FAST_MODE; sig = SIGINT; } else if (strcmp(modeopt, "i") == 0 || strcmp(modeopt, "immediate") == 0) { shutdown_mode = IMMEDIATE_MODE; sig = SIGQUIT; } else { write_stderr(_("%s: unrecognized shutdown mode \"%s\"\n"), progname, modeopt); do_advice(); exit(1); } } static void set_sig(char *signame) { if (!strcmp(signame, "HUP")) sig = SIGHUP; else if (!strcmp(signame, "INT")) sig = SIGINT; else if (!strcmp(signame, "QUIT")) sig = SIGQUIT; else if (!strcmp(signame, "ABRT")) sig = SIGABRT; /* * probably should NOT provide SIGKILL * * else if (!strcmp(signame,"KILL")) sig = SIGKILL; */ else if (!strcmp(signame, "TERM")) sig = SIGTERM; else if (!strcmp(signame, "USR1")) sig = SIGUSR1; else if (!strcmp(signame, "USR2")) sig = SIGUSR2; else { write_stderr(_("%s: unrecognized signal name \"%s\"\n"), progname, signame); do_advice(); exit(1); } }

 

 

int main(int argc, char **argv) { static struct option long_options[] = { {"help", no_argument, NULL, '?'}, {"version", no_argument, NULL, 'V'}, {"log", required_argument, NULL, 'l'}, {"mode", required_argument, NULL, 'm'}, {"pgdata", required_argument, NULL, 'D'}, {"silent", no_argument, NULL, 's'}, {"timeout", required_argument, NULL, 't'}, {"core-files", no_argument, NULL, 'c'}, {NULL, 0, NULL, 0} }; int option_index; int c; pgpid_t killproc = 0; #if defined(WIN32) || defined(__CYGWIN__) setvbuf(stderr, NULL, _IONBF, 0); #endif progname = get_progname(argv[0]); set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_ctl")); /* * save argv[0] so do_start() can look for the postmaster if necessary. we * don't look for postmaster here because in many cases we won't need it. */ argv0 = argv[0]; umask(077); /* support --help and --version even if invoked as root */ if (argc > 1) { if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0) { do_help(); exit(0); } else if (strcmp(argv[1], "-V") == 0 || strcmp(argv[1], "--version") == 0) { puts("pg_ctl (PostgreSQL) " PG_VERSION); exit(0); } } /* * Disallow running as root, to forestall any possible security holes. */ #ifndef WIN32 if (geteuid() == 0) { write_stderr(_("%s: cannot be run as root\n" "Please log in (using, e.g., \"su\") as the " "(unprivileged) user that will\n" "own the server process.\n"), progname); exit(1); } #endif /* * 'Action' can be before or after args so loop over both. Some * getopt_long() implementations will reorder argv[] to place all flags * first (GNU?), but we don't rely on it. Our /port version doesn't do * that. */ optind = 1; /* process command-line options */ while (optind < argc) { while ((c = getopt_long(argc, argv, "cD:l:m:N:o:p:P:st:U:wW", long_options, &option_index)) != -1) { switch (c) { case 'D': { char *pgdata_D; char *env_var = pg_malloc(strlen(optarg) + 8); pgdata_D = xstrdup(optarg); canonicalize_path(pgdata_D); snprintf(env_var, strlen(optarg) + 8, "PGDATA=%s", pgdata_D); putenv(env_var); /* * We could pass PGDATA just in an environment * variable but we do -D too for clearer postmaster * 'ps' display */ pgdata_opt = pg_malloc(strlen(pgdata_D) + 7); snprintf(pgdata_opt, strlen(pgdata_D) + 7, "-D \"%s\" ", pgdata_D); break; } case 'l': log_file = xstrdup(optarg); break; case 'm': set_mode(optarg); break; case 'N': register_servicename = xstrdup(optarg); break; case 'o': post_opts = xstrdup(optarg); break; case 'p': exec_path = xstrdup(optarg); break; case 'P': register_password = xstrdup(optarg); break; case 's': silent_mode = true; break; case 't': wait_seconds = atoi(optarg); break; case 'U': if (strchr(optarg, '\\')) register_username = xstrdup(optarg); else /* Prepend .\ for local accounts */ { register_username = malloc(strlen(optarg) + 3); if (!register_username) { write_stderr(_("%s: out of memory\n"), progname); exit(1); } strcpy(register_username, ".\\"); strcat(register_username, optarg); } break; case 'w': do_wait = true; wait_set = true; break; case 'W': do_wait = false; wait_set = true; break; case 'c': allow_core_files = true; break; default: /* getopt_long already issued a suitable error message */ do_advice(); exit(1); } } /* Process an action */ if (optind < argc) { if (ctl_command != NO_COMMAND) { write_stderr(_("%s: too many command-line arguments (first is \"%s\")\n"), progname, argv[optind]); do_advice(); exit(1); } if (strcmp(argv[optind], "init") == 0 || strcmp(argv[optind], "initdb") == 0) ctl_command = INIT_COMMAND; else if (strcmp(argv[optind], "start") == 0) ctl_command = START_COMMAND; else if (strcmp(argv[optind], "stop") == 0) ctl_command = STOP_COMMAND; else if (strcmp(argv[optind], "restart") == 0) ctl_command = RESTART_COMMAND; else if (strcmp(argv[optind], "reload") == 0) ctl_command = RELOAD_COMMAND; else if (strcmp(argv[optind], "status") == 0) ctl_command = STATUS_COMMAND; else if (strcmp(argv[optind], "kill") == 0) { if (argc - optind < 3) { write_stderr(_("%s: missing arguments for kill mode\n"), progname); do_advice(); exit(1); } ctl_command = KILL_COMMAND; set_sig(argv[++optind]); killproc = atol(argv[++optind]); } #if defined(WIN32) || defined(__CYGWIN__) else if (strcmp(argv[optind], "register") == 0) ctl_command = REGISTER_COMMAND; else if (strcmp(argv[optind], "unregister") == 0) ctl_command = UNREGISTER_COMMAND; else if (strcmp(argv[optind], "runservice") == 0) ctl_command = RUN_AS_SERVICE_COMMAND; #endif else { write_stderr(_("%s: unrecognized operation mode \"%s\"\n"), progname, argv[optind]); do_advice(); exit(1); } optind++; } } if (ctl_command == NO_COMMAND) { write_stderr(_("%s: no operation specified\n"), progname); do_advice(); exit(1); } /* Note we put any -D switch into the env var above */ pg_data = getenv("PGDATA"); if (pg_data) { pg_data = xstrdup(pg_data); canonicalize_path(pg_data); } if (pg_data == NULL && ctl_command != KILL_COMMAND && ctl_command != UNREGISTER_COMMAND) { write_stderr(_("%s: no database directory specified " "and environment variable PGDATA unset\n"), progname); do_advice(); exit(1); } if (!wait_set) { switch (ctl_command) { case RESTART_COMMAND: case START_COMMAND: do_wait = false; break; case STOP_COMMAND: do_wait = true; break; default: break; } } if (ctl_command == RELOAD_COMMAND) { sig = SIGHUP; do_wait = false; } if (pg_data) { snprintf(postopts_file, MAXPGPATH, "%s/postmaster.opts", pg_data); snprintf(pid_file, MAXPGPATH, "%s/postmaster.pid", pg_data); snprintf(conf_file, MAXPGPATH, "%s/postgresql.conf", pg_data); snprintf(backup_file, MAXPGPATH, "%s/backup_label", pg_data); snprintf(recovery_file, MAXPGPATH, "%s/recovery.conf", pg_data); } switch (ctl_command) { case INIT_COMMAND: do_init(); break; case STATUS_COMMAND: do_status(); break; case START_COMMAND: do_start(); break; case STOP_COMMAND: do_stop(); break; case RESTART_COMMAND: do_restart(); break; case RELOAD_COMMAND: do_reload(); break; case KILL_COMMAND: do_kill(killproc); break; #if defined(WIN32) || defined(__CYGWIN__) case REGISTER_COMMAND: pgwin32_doRegister(); break; case UNREGISTER_COMMAND: pgwin32_doUnregister(); break; case RUN_AS_SERVICE_COMMAND: pgwin32_doRunAsService(); break; #endif default: break; } exit(0); }