Was there anyone on the server?

 # getent utmpx lastlogin getent utmpx lastlogin [1437293217.427108 -- Sun Jul 19 11:06:57 2015] user process: id="3a873cda545eff7f" pid="1288" user="root" line="ttyv1" host="" [1447410352.840653 -- Fri Nov 13 13:25:52 2015] user process: id="8084832f30000000" pid="14281" user="Alex" line="pts/0" host="108.182.182.209" [1412600841.811588 -- Mon Oct 6 16:07:21 2014] user process: id="3962386266747064" pid="39819" user="swimmer" line="ftpd" host="10.34.1.23" 

 # getent utmpx log getent utmpx log [1446494176.682516 -- Mon Nov 2 22:56:16 2015] user process: id="8084832f32000000" pid="72946" user="Alex" line="pts/2" host="108.182.182.209" [1446498691.474026 -- Tue Nov 3 00:11:31 2015] dead process: id="8084832f31000000" pid="61263" [1446614492.857275 -- Wed Nov 4 08:21:32 2015] user process: id="8084832f31000000" pid="79491" user="Alex" line="pts/1" host="30.205.96.92" [1446614507.736041 -- Wed Nov 4 08:21:47 2015] dead process: id="8084832f31000000" pid="79491" [1446698146.439426 -- Thu Nov 5 07:35:46 2015] user process: id="8084832f31000000" pid="83858" user="Alex" line="pts/1" host="30.205.116.124" [1446706228.892627 -- Thu Nov 5 09:50:28 2015] dead process: id="8084832f31000000" pid="83858" [1446710834.014993 -- Thu Nov 5 11:07:14 2015] system shutdown [1446710906.311914 -- Thu Nov 5 11:08:26 2015] system boot [1446710938.817058 -- Thu Nov 5 11:08:58 2015] user process: id="8084832f30000000" pid="1313" user="Alex" line="pts/0" host="10.3.1.15" [1446721174.063221 -- Thu Nov 5 13:59:34 2015] user process: id="8084832f31000000" pid="1789" user="Alex" line="pts/1" host="108.182.182.209" [1446815955.085182 -- Fri Nov 6 16:19:15 2015] dead process: id="8084832f30000000" pid="1313" [1446906334.551710 -- Sat Nov 7 17:25:34 2015] user process: id="8084832f30000000" pid="11580" user="Alex" line="pts/0" host="108.182.182.209" [1446912588.809728 -- Sat Nov 7 19:09:48 2015] dead process: id="8084832f31000000" pid="1789" [1447045707.708080 -- Mon Nov 9 08:08:27 2015] user process: id="8084832f31000000" pid="19008" user="Alex" line="pts/1" host="mm-21-205-84-93.dynamic.pppoe.mgts.ru" [1447045911.315244 -- Mon Nov 9 08:11:51 2015] dead process: id="8084832f31000000" pid="19008" [1447052181.641530 -- Mon Nov 9 09:56:21 2015] user process: id="8084832f31000000" pid="19314" user="Alex" line="pts/1" host="10.3.1.15" [1447131335.768107 -- Tue Nov 10 07:55:35 2015] user process: id="8084832f33000000" pid="23441" user="Alex" line="pts/3" host="30.205.98.54" [1447133646.400779 -- Tue Nov 10 08:34:06 2015] dead process: id="8084832f33000000" pid="23441" [1447261331.491910 -- Wed Nov 11 20:02:11 2015] system boot [1447263839.850262 -- Wed Nov 11 20:43:59 2015] user process: id="8084832f30000000" pid="1422" user="Alex" line="pts/0" host="10.3.1.15" [1447267906.123055 -- Wed Nov 11 21:51:46 2015] user process: id="8084832f31000000" pid="1644" user="Alex" line="pts/1" host="10.3.1.15" [1447271644.777315 -- Wed Nov 11 22:54:04 2015] dead process: id="8084832f30000000" pid="1422" [1447275711.000315 -- Thu Nov 12 00:01:51 2015] dead process: id="8084832f31000000" pid="1644" [1447303224.172811 -- Thu Nov 12 07:40:24 2015] user process: id="8084832f30000000" pid="3685" user="Alex" line="pts/0" host="30.205.135.101" [1447305113.718172 -- Thu Nov 12 08:11:53 2015] dead process: id="8084832f30000000" pid="3685" [1447309547.097136 -- Thu Nov 12 09:25:47 2015] user process: id="8084832f30000000" pid="4018" user="Alex" line="pts/0" host="108.182.182.209" [1447311304.396008 -- Thu Nov 12 09:55:04 2015] user process: id="8084832f31000000" pid="4104" user="Alex" line="pts/1" host="10.3.1.15" [1447316907.634554 -- Thu Nov 12 11:28:27 2015] user process: id="8084832f32000000" pid="4373" user="Alex" line="pts/2" host="108.182.182.209" [1447322795.387121 -- Thu Nov 12 13:06:35 2015] dead process: id="8084832f30000000" pid="4018" [1447410352.840653 -- Fri Nov 13 13:25:52 2015] user process: id="8084832f30000000" pid="14281" user="Alex" line="pts/0" host="108.182.182.209" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f30000000" pid="0" 

 [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f32000000" pid="72946" user="Alex" line="pts/2" host="108.182.182.209" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f31000000" pid="61263" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f31000000" pid="79491" user="Alex" line="pts/1" host="30.205.96.92" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f31000000" pid="79491" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f31000000" pid="83858" user="Alex" line="pts/1" host="30.205.116.124" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f31000000" pid="83858" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] system shutdown [1447410438.824887 -- Fri Nov 13 13:27:18 2015] system boot [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f30000000" pid="1313" user="Alex" line="pts/0" host="10.3.1.15" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f31000000" pid="1789" user="Alex" line="pts/1" host="108.182.182.209" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f30000000" pid="1313" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f30000000" pid="11580" user="Alex" line="pts/0" host="108.182.182.209" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f31000000" pid="1789" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f31000000" pid="19008" user="Alex" line="pts/1" host="mm-21-205-84-93.dynamic.pppoe.mgts.ru" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f31000000" pid="19008" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f31000000" pid="19314" user="Alex" line="pts/1" host="10.3.1.15" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f33000000" pid="23441" user="Alex" line="pts/3" host="30.205.98.54" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f33000000" pid="23441" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] system boot [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f30000000" pid="1422" user="Alex" line="pts/0" host="10.3.1.15" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f31000000" pid="1644" user="Alex" line="pts/1" host="10.3.1.15" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f30000000" pid="1422" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f31000000" pid="1644" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f30000000" pid="3685" user="Alex" line="pts/0" host="30.205.135.101" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f30000000" pid="3685" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f30000000" pid="4018" user="Alex" line="pts/0" host="108.182.182.209" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f31000000" pid="4104" user="Alex" line="pts/1" host="10.3.1.15" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] user process: id="8084832f32000000" pid="4373" user="Alex" line="pts/2" host="108.182.182.209" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f30000000" pid="4018" [1447410438.824887 -- Fri Nov 13 13:27:18 2015] dead process: id="8084832f30000000" pid="0" 

 #include <sys/cdefs.h> __FBSDID("$FreeBSD: getent editor v 0.0.a $"); #include <sys/socket.h> #include <sys/param.h> #include <arpa/inet.h> #include <arpa/nameser.h> #include <net/if.h> #include <netinet/if_ether.h> #include <netinet/in.h> /* for INET6_ADDRSTRLEN */ #include <rpc/rpcent.h> #include <assert.h> #include <ctype.h> #include <errno.h> #include <grp.h> #include <limits.h> #include <netdb.h> #include <pwd.h> #include <stdarg.h> #include <stdint.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include "utmpx.h" #include "pututxline.c" static int usage(void); static int parsenum(const char *, unsigned long *); static int utmpx(int, char *[]); enum { RV_OK = 0, RV_USAGE = 1, RV_NOTFOUND = 2, RV_NOENUM = 3 }; static struct getentdb { const char *name; int (*callback)(int, char *[]); } databases[] = { { "utmpx", utmpx, }, { NULL, NULL, }, }; int main(int argc, char *argv[]) { struct getentdb *curdb; setprogname(argv[0]); if (argc < 2) usage(); for (curdb = databases; curdb->name != NULL; curdb++) { if (strcmp(curdb->name, argv[1]) == 0) { exit(curdb->callback(argc, argv)); } } fprintf(stderr, "Unknown database: %s\n", argv[1]); usage(); /* NOTREACHED */ return RV_USAGE; } static int usage(void) { struct getentdb *curdb; fprintf(stderr, "Usage: %s database [key ...]\n", getprogname()); fprintf(stderr, " database may be one of:\n\t"); for (curdb = databases; curdb->name != NULL; curdb++) { fprintf(stderr, " %s", curdb->name); } fprintf(stderr, "\n"); exit(RV_USAGE); /* NOTREACHED */ } /* * printfmtstrings -- * vprintf(format, ...), * then the aliases (beginning with prefix, separated by sep), * then a newline */ static void printfmtstrings(char *strings[], const char *prefix, const char *sep, const char *fmt, ...) { va_list ap; const char *curpref; int i; va_start(ap, fmt); vprintf(fmt, ap); curpref = prefix; for (i = 0; strings[i] != NULL; i++) { printf("%s%s", curpref, strings[i]); curpref = sep; } printf("\n"); va_end(ap); } /* * utmpx */ #define UTMPXPRINTID do { \ size_t i; \ for (i = 0; i < sizeof ut->ut_id; i++) \ printf("%02hhx", ut->ut_id[i]); \ } while (0) static void utmpxprint(const struct utmpx *ut) { if (ut->ut_type == EMPTY) return; printf("[%jd.%06u -- %.24s] ", (intmax_t)ut->ut_tv.tv_sec, (unsigned int)ut->ut_tv.tv_usec, ctime(&ut->ut_tv.tv_sec)); switch (ut->ut_type) { case BOOT_TIME: printf("system boot\n"); return; case SHUTDOWN_TIME: printf("system shutdown\n"); return; case OLD_TIME: printf("old system time\n"); return; case NEW_TIME: printf("new system time\n"); return; case USER_PROCESS: printf("user process: id=\""); UTMPXPRINTID; printf("\" pid=\"%d\" user=\"%s\" line=\"%s\" host=\"%s\"\n", ut->ut_pid, ut->ut_user, ut->ut_line, ut->ut_host); break; case INIT_PROCESS: printf("init process: id=\""); UTMPXPRINTID; printf("\" pid=\"%d\"\n", ut->ut_pid); break; case LOGIN_PROCESS: printf("login process: id=\""); UTMPXPRINTID; printf("\" pid=\"%d\" user=\"%s\" line=\"%s\" host=\"%s\"\n", ut->ut_pid, ut->ut_user, ut->ut_line, ut->ut_host); break; case DEAD_PROCESS: printf("dead process: id=\""); UTMPXPRINTID; printf("\" pid=\"%d\"\n", ut->ut_pid); break; default: printf("unknown record type %hu\n", ut->ut_type); break; } } static int utmpx(int argc, char *argv[]) { //const struct utmpx *ut; struct utmpx *ut; const char *file = NULL; int rv = RV_OK, db = 0; assert(argc > 1); assert(argv != NULL); if (argc == 3 || argc == 4 || argc == 5) { if (strcmp(argv[2], "active") == 0) db = UTXDB_ACTIVE; else if (strcmp(argv[2], "lastlogin") == 0) db = UTXDB_LASTLOGIN; else if (strcmp(argv[2], "log") == 0) db = UTXDB_LOG; else rv = RV_USAGE; if (argc == 4 || argc == 5) file = argv[3]; } else { rv = RV_USAGE; } if (rv == RV_USAGE) { fprintf(stderr, "Usage: %s utmpx active | lastlogin | log [filename]\n", getprogname()); } else if (rv == RV_OK) { if (setutxdb(db, file) != 0) return (RV_NOTFOUND); int ires = 0; printf("UTXDB_LOG result: [%d]\n", ires); if(argc == 5) { while ((ut = getutxent()) != NULL) { utmpxprint(ut); //if(strcmp(ut->ut_host, "10.34.1.155") != 0) //if(ut->ut_pid != 4373) if(ut->ut_pid != atoi(argv[4])) { pututxline(ut); } } } else puts("ut_pid(argv[4]) needed!.."); endutxent(); } return (rv); } 

 #include <sys/cdefs.h> __FBSDID("$FreeBSD: pututxline.cv 0.0.a $"); #include <sys/endian.h> #include <sys/stat.h> #include <sys/uio.h> #include <errno.h> #include <fcntl.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <utmpx.h> #include "/usr/src/lib/libc/include/namespace.h" #include "/usr/src/lib/libc/gen/utxdb.h" #include "/usr/src/lib/libc/include/un-namespace.h" //----------------------------------------------------------------------------- #include <sys/param.h> #include <sys/time.h> #include <stdlib.h> //----------------------------------------------------------------------------- #define UTOF_STRING(ut, fu, field) do { \ strncpy((fu)->fu_ ## field, (ut)->ut_ ## field, \ MIN(sizeof (fu)->fu_ ## field, sizeof (ut)->ut_ ## field)); \ } while (0) #define UTOF_ID(ut, fu) do { \ memcpy((fu)->fu_id, (ut)->ut_id, \ MIN(sizeof (fu)->fu_id, sizeof (ut)->ut_id)); \ } while (0) #define UTOF_PID(ut, fu) do { \ (fu)->fu_pid = htobe32((ut)->ut_pid); \ } while (0) #define UTOF_TYPE(ut, fu) do { \ (fu)->fu_type = (ut)->ut_type; \ } while (0) #define UTOF_TV(ut, fu) do { \ (fu)->fu_tv = htobe64((uint64_t)(ut)->ut_tv.tv_sec * 1000000 + \ (uint64_t)(ut)->ut_tv.tv_usec); \ } while (0) //----------------------------------------------------------------------------- void utx_to_futx(const struct utmpx *ut, struct futx *fu) { memset(fu, 0, sizeof *fu); switch (ut->ut_type) { case BOOT_TIME: case OLD_TIME: case NEW_TIME: /* Extension: shutdown time. */ case SHUTDOWN_TIME: break; case USER_PROCESS: UTOF_ID(ut, fu); UTOF_STRING(ut, fu, user); UTOF_STRING(ut, fu, line); /* Extension: host name. */ UTOF_STRING(ut, fu, host); UTOF_PID(ut, fu); break; case INIT_PROCESS: UTOF_ID(ut, fu); UTOF_PID(ut, fu); break; case LOGIN_PROCESS: UTOF_ID(ut, fu); UTOF_STRING(ut, fu, user); UTOF_STRING(ut, fu, line); UTOF_PID(ut, fu); break; case DEAD_PROCESS: UTOF_ID(ut, fu); UTOF_PID(ut, fu); break; default: fu->fu_type = EMPTY; return; } UTOF_TYPE(ut, fu); UTOF_TV(ut, fu); //UTOF_TV(ut, fu); } //----------------------------------------------------------------------------- #define FTOU_STRING(fu, ut, field) do { \ strncpy((ut)->ut_ ## field, (fu)->fu_ ## field, \ MIN(sizeof (ut)->ut_ ## field - 1, sizeof (fu)->fu_ ## field)); \ } while (0) #define FTOU_ID(fu, ut) do { \ memcpy((ut)->ut_id, (fu)->fu_id, \ MIN(sizeof (ut)->ut_id, sizeof (fu)->fu_id)); \ } while (0) #define FTOU_PID(fu, ut) do { \ (ut)->ut_pid = be32toh((fu)->fu_pid); \ } while (0) #define FTOU_TYPE(fu, ut) do { \ (ut)->ut_type = (fu)->fu_type; \ } while (0) #define FTOU_TV(fu, ut) do { \ uint64_t t; \ t = be64toh((fu)->fu_tv); \ (ut)->ut_tv.tv_sec = t / 1000000; \ (ut)->ut_tv.tv_usec = t % 1000000; \ } while (0) //----------------------------------------------------------------------------- struct utmpx * futx_to_utx(const struct futx *fu) { #ifdef __NO_TLS static struct utmpx *ut; #else static _Thread_local struct utmpx *ut; #endif if (ut == NULL) { ut = calloc(1, sizeof *ut); if (ut == NULL) return (NULL); } else memset(ut, 0, sizeof *ut); switch (fu->fu_type) { case BOOT_TIME: case OLD_TIME: case NEW_TIME: /* Extension: shutdown time. */ case SHUTDOWN_TIME: break; case USER_PROCESS: FTOU_ID(fu, ut); FTOU_STRING(fu, ut, user); FTOU_STRING(fu, ut, line); /* Extension: host name. */ FTOU_STRING(fu, ut, host); FTOU_PID(fu, ut); break; case INIT_PROCESS: FTOU_ID(fu, ut); FTOU_PID(fu, ut); break; case LOGIN_PROCESS: FTOU_ID(fu, ut); FTOU_STRING(fu, ut, user); FTOU_STRING(fu, ut, line); FTOU_PID(fu, ut); break; case DEAD_PROCESS: FTOU_ID(fu, ut); FTOU_PID(fu, ut); break; default: ut->ut_type = EMPTY; return (ut); } FTOU_TYPE(fu, ut); FTOU_TV(fu, ut); return (ut); } //----------------------------------------------------------------------------- static FILE * futx_open(const char *file) { FILE *fp; struct stat sb; int fd; fd = open(file, O_CREAT|O_RDWR|O_EXLOCK|O_CLOEXEC, 0644); if (fd < 0) return (NULL); /* Safety check: never use broken files. */ if (fstat(fd, &sb) != -1 && sb.st_size % sizeof(struct futx) != 0) { close(fd); errno = EFTYPE; return (NULL); } fp = fdopen(fd, "r+"); if (fp == NULL) { close(fd); return (NULL); } return (fp); } static int utx_active_add(const struct futx *fu) { FILE *fp; struct futx fe; off_t partial; int error, ret; partial = -1; ret = 0; /* * Register user login sessions. Overwrite entries of sessions * that have already been terminated. */ fp = futx_open(_PATH_UTX_ACTIVE); if (fp == NULL) return (-1); while (fread(&fe, sizeof(fe), 1, fp) == 1) { switch (fe.fu_type) { case BOOT_TIME: /* Leave these intact. */ break; case USER_PROCESS: case INIT_PROCESS: case LOGIN_PROCESS: case DEAD_PROCESS: /* Overwrite when ut_id matches. */ if (memcmp(fu->fu_id, fe.fu_id, sizeof(fe.fu_id)) == 0) { ret = fseeko(fp, -(off_t)sizeof(fe), SEEK_CUR); goto exact; } if (fe.fu_type != DEAD_PROCESS) break; /* FALLTHROUGH */ default: /* Allow us to overwrite unused records. */ if (partial == -1) { partial = ftello(fp); /* * Distinguish errors from valid values so we * don't overwrite good data by accident. */ if (partial != -1) partial -= (off_t)sizeof(fe); } break; } } /* * No exact match found. Use the partial match. If no partial * match was found, just append a new record. */ if (partial != -1) ret = fseeko(fp, partial, SEEK_SET); exact: if (ret == -1) error = errno; else if (fwrite(fu, sizeof(*fu), 1, fp) < 1) error = errno; else error = 0; fclose(fp); if (error != 0) errno = error; return (error == 0 ? 0 : 1); } static int utx_active_remove(struct futx *fu) { FILE *fp; struct futx fe; int error, ret; /* * Remove user login sessions, having the same ut_id. */ fp = futx_open(_PATH_UTX_ACTIVE); if (fp == NULL) return (-1); error = ESRCH; ret = -1; while (fread(&fe, sizeof(fe), 1, fp) == 1 && ret != 0) switch (fe.fu_type) { case USER_PROCESS: case INIT_PROCESS: case LOGIN_PROCESS: if (memcmp(fu->fu_id, fe.fu_id, sizeof(fe.fu_id)) != 0) continue; /* Terminate session. */ if (fseeko(fp, -(off_t)sizeof(fe), SEEK_CUR) == -1) error = errno; else if (fwrite(fu, sizeof(*fu), 1, fp) < 1) error = errno; else ret = 0; } fclose(fp); if (ret != 0) errno = error; return (ret); } static void utx_active_init(const struct futx *fu) { int fd; /* Initialize utx.active with a single BOOT_TIME record. */ fd = open(_PATH_UTX_ACTIVE, O_CREAT|O_RDWR|O_TRUNC, 0644); if (fd < 0) return; write(fd, fu, sizeof(*fu)); close(fd); } static void utx_active_purge(void) { truncate(_PATH_UTX_ACTIVE, 0); } static int utx_lastlogin_add(const struct futx *fu) { struct futx fe; FILE *fp; int error, ret; ret = 0; /* * Write an entry to lastlogin. Overwrite the entry if the * current user already has an entry. If not, append a new * entry. */ fp = futx_open(_PATH_UTX_LASTLOGIN); if (fp == NULL) return (-1); while (fread(&fe, sizeof fe, 1, fp) == 1) { if (strncmp(fu->fu_user, fe.fu_user, sizeof fe.fu_user) != 0) continue; /* Found a previous lastlogin entry for this user. */ ret = fseeko(fp, -(off_t)sizeof fe, SEEK_CUR); break; } if (ret == -1) error = errno; else if (fwrite(fu, sizeof *fu, 1, fp) < 1) { error = errno; ret = -1; } fclose(fp); if (ret == -1) errno = error; return (ret); } static void utx_lastlogin_upgrade(void) { struct stat sb; int fd; fd = open(_PATH_UTX_LASTLOGIN, O_RDWR|O_CLOEXEC, 0644); if (fd < 0) return; /* * Truncate broken lastlogin files. In the future we should * check for older versions of the file format here and try to * upgrade it. */ if (fstat(fd, &sb) != -1 && sb.st_size % sizeof(struct futx) != 0) ftruncate(fd, 0); close(fd); } static int utx_log_add(const struct futx *fu) { struct iovec vec[2]; int error, fd; uint16_t l; /* * Append an entry to the log file. We only need to append * records to this file, so to conserve space, trim any trailing * zero-bytes. Prepend a length field, indicating the length of * the record, excluding the length field itself. */ for (l = sizeof(*fu); l > 0 && ((const char *)fu)[l - 1] == '\0'; l--) ; vec[0].iov_base = &l; vec[0].iov_len = sizeof(l); vec[1].iov_base = __DECONST(void *, fu); vec[1].iov_len = l; l = htobe16(l); fd = open(_PATH_UTX_LOG, O_CREAT|O_WRONLY|O_APPEND|O_CLOEXEC, 0644); if (fd < 0) return (-1); if (writev(fd, vec, 2) == -1) error = errno; else error = 0; close(fd); if (error != 0) errno = error; return (error == 0 ? 0 : 1); } struct utmpx * pututxline(const struct utmpx *utmpx) { struct futx fu; int bad; bad = 0; utx_to_futx(utmpx, &fu); switch (fu.fu_type) { case BOOT_TIME: utx_active_init(&fu); utx_lastlogin_upgrade(); break; case SHUTDOWN_TIME: utx_active_purge(); break; case OLD_TIME: case NEW_TIME: break; case USER_PROCESS: bad |= utx_active_add(&fu); bad |= utx_lastlogin_add(&fu); break; #if 0 /* XXX: Are these records of any use to us? */ case INIT_PROCESS: case LOGIN_PROCESS: bad |= utx_active_add(&fu); break; #endif case DEAD_PROCESS: /* * In case writing a logout entry fails, never attempt * to write it to utx.log. The logout entry's ut_id * might be invalid. */ if (utx_active_remove(&fu) != 0) return (NULL); break; default: errno = EINVAL; return (NULL); } bad |= utx_log_add(&fu); return (bad ? NULL : futx_to_utx(&fu)); } 

 # getent utmpx lastlogin getent utmpx lastlogin [1437293217.427108 -- Sun Jul 19 11:06:57 2015] user process: id="3a873cda545eff7f" pid="1288" user="root" line="ttyv1" host="" [1447316907.634554 -- Thu Nov 12 11:28:27 2015] user process: id="8084832f32000000" pid="4373" user="Alex" line="pts/2" host="108.182.182.209" [1412600841.811588 -- Mon Oct 6 16:07:21 2014] user process: id="3962386266747064" pid="39819" user="swimmer" line="ftpd" host="10.34.1.23" # getent utmpx log getent utmpx log [1446494176.682516 -- Mon Nov 2 22:56:16 2015] user process: id="8084832f32000000" pid="72946" user="Alex" line="pts/2" host="108.182.182.209" [1446498691.474026 -- Tue Nov 3 00:11:31 2015] dead process: id="8084832f31000000" pid="61263" [1446614492.857275 -- Wed Nov 4 08:21:32 2015] user process: id="8084832f31000000" pid="79491" user="Alex" line="pts/1" host="30.205.96.92" [1446614507.736041 -- Wed Nov 4 08:21:47 2015] dead process: id="8084832f31000000" pid="79491" [1446698146.439426 -- Thu Nov 5 07:35:46 2015] user process: id="8084832f31000000" pid="83858" user="Alex" line="pts/1" host="30.205.116.124" [1446706228.892627 -- Thu Nov 5 09:50:28 2015] dead process: id="8084832f31000000" pid="83858" [1446710834.014993 -- Thu Nov 5 11:07:14 2015] system shutdown [1446710906.311914 -- Thu Nov 5 11:08:26 2015] system boot [1446710938.817058 -- Thu Nov 5 11:08:58 2015] user process: id="8084832f30000000" pid="1313" user="Alex" line="pts/0" host="10.3.1.15" [1446721174.063221 -- Thu Nov 5 13:59:34 2015] user process: id="8084832f31000000" pid="1789" user="Alex" line="pts/1" host="108.182.182.209" [1446815955.085182 -- Fri Nov 6 16:19:15 2015] dead process: id="8084832f30000000" pid="1313" [1446906334.551710 -- Sat Nov 7 17:25:34 2015] user process: id="8084832f30000000" pid="11580" user="Alex" line="pts/0" host="108.182.182.209" [1446912588.809728 -- Sat Nov 7 19:09:48 2015] dead process: id="8084832f31000000" pid="1789" [1447045707.708080 -- Mon Nov 9 08:08:27 2015] user process: id="8084832f31000000" pid="19008" user="Alex" line="pts/1" host="mm-21-205-84-93.dynamic.pppoe.mgts.ru" [1447045911.315244 -- Mon Nov 9 08:11:51 2015] dead process: id="8084832f31000000" pid="19008" [1447052181.641530 -- Mon Nov 9 09:56:21 2015] user process: id="8084832f31000000" pid="19314" user="Alex" line="pts/1" host="10.3.1.15" [1447131335.768107 -- Tue Nov 10 07:55:35 2015] user process: id="8084832f33000000" pid="23441" user="Alex" line="pts/3" host="30.205.98.54" [1447133646.400779 -- Tue Nov 10 08:34:06 2015] dead process: id="8084832f33000000" pid="23441" [1447261331.491910 -- Wed Nov 11 20:02:11 2015] system boot [1447263839.850262 -- Wed Nov 11 20:43:59 2015] user process: id="8084832f30000000" pid="1422" user="Alex" line="pts/0" host="10.3.1.15" [1447267906.123055 -- Wed Nov 11 21:51:46 2015] user process: id="8084832f31000000" pid="1644" user="Alex" line="pts/1" host="10.3.1.15" [1447271644.777315 -- Wed Nov 11 22:54:04 2015] dead process: id="8084832f30000000" pid="1422" [1447275711.000315 -- Thu Nov 12 00:01:51 2015] dead process: id="8084832f31000000" pid="1644" [1447303224.172811 -- Thu Nov 12 07:40:24 2015] user process: id="8084832f30000000" pid="3685" user="Alex" line="pts/0" host="30.205.135.101" [1447305113.718172 -- Thu Nov 12 08:11:53 2015] dead process: id="8084832f30000000" pid="3685" [1447309547.097136 -- Thu Nov 12 09:25:47 2015] user process: id="8084832f30000000" pid="4018" user="Alex" line="pts/0" host="108.182.182.209" [1447311304.396008 -- Thu Nov 12 09:55:04 2015] user process: id="8084832f31000000" pid="4104" user="Alex" line="pts/1" host="10.3.1.15" [1447316907.634554 -- Thu Nov 12 11:28:27 2015] user process: id="8084832f32000000" pid="4373" user="Alex" line="pts/2" host="108.182.182.209" [1447322795.387121 -- Thu Nov 12 13:06:35 2015] dead process: id="8084832f30000000" pid="4018"