| /* Portions of this file are subject to the following copyright(s). See |
| * the Net-SNMP's COPYING file for more details and other copyrights |
| * that may apply: |
| */ |
| /* |
| * Portions of this file are copyrighted by: |
| * Copyright © 2003 Sun Microsystems, Inc. All rights reserved. |
| * Use is subject to license terms specified in the COPYING file |
| * distributed with the Net-SNMP package. |
| */ |
| |
| /* |
| * Host Resources MIB - system group implementation - hr_system.c |
| * |
| */ |
| |
| #include <net-snmp/net-snmp-config.h> |
| #include <net-snmp/net-snmp-features.h> |
| #if HAVE_STRING_H |
| #include <string.h> |
| #else |
| #include <strings.h> |
| #endif |
| |
| #include <net-snmp/net-snmp-includes.h> |
| #include <net-snmp/agent/net-snmp-agent-includes.h> |
| |
| #include "host.h" |
| #include "host_res.h" |
| #include "hr_system.h" |
| #include <net-snmp/agent/auto_nlist.h> |
| |
| #ifdef HAVE_SYS_PROC_H |
| #include <sys/param.h> |
| #include "sys/proc.h" |
| #endif |
| #ifndef mingw32 |
| #if HAVE_UTMPX_H |
| #include <utmpx.h> |
| #else |
| #include <utmp.h> |
| #endif |
| #endif /* mingw32 */ |
| #include <signal.h> |
| #include <errno.h> |
| |
| #ifdef WIN32 |
| #include <lm.h> |
| #endif |
| |
| #ifdef linux |
| #ifdef HAVE_LINUX_TASKS_H |
| #include <linux/tasks.h> |
| #else |
| /* |
| * If this file doesn't exist, then there is no hard limit on the number |
| * of processes, so return 0 for hrSystemMaxProcesses. |
| */ |
| #define NR_TASKS 0 |
| #endif |
| #endif |
| |
| #if defined(hpux10) || defined(hpux11) |
| #include <sys/pstat.h> |
| #endif |
| |
| #if defined(solaris2) |
| #include <kstat.h> |
| #include <sys/var.h> |
| #include <time.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <sys/types.h> |
| #include <sys/openpromio.h> |
| #endif |
| |
| #ifdef HAVE_SYS_SYSCTL_H |
| #include <sys/sysctl.h> |
| #endif |
| |
| netsnmp_feature_require(date_n_time) |
| |
| #if !defined(UTMP_FILE) && defined(_PATH_UTMP) |
| #define UTMP_FILE _PATH_UTMP |
| #endif |
| |
| #if defined(UTMP_FILE) && !HAVE_UTMPX_H |
| void setutent(void); |
| void endutent(void); |
| struct utmp *getutent(void); |
| #endif /* UTMP_FILE */ |
| |
| |
| /********************* |
| * |
| * Kernel & interface information, |
| * and internal forward declarations |
| * |
| *********************/ |
| |
| #if defined(solaris2) |
| static struct openpromio * op_malloc(size_t size); |
| static void op_free(struct openpromio *op); |
| |
| #ifndef NETSNMP_NO_WRITE_SUPPORT |
| static int set_solaris_bootcommand_parameter(int action, u_char * var_val, u_char var_val_type, size_t var_val_len, u_char * statP, oid * name, size_t name_len); |
| #endif /* !NETSNMP_NO_WRITE_SUPPORT */ |
| |
| static int set_solaris_eeprom_parameter(const char *key, const char *value, size_t value_len); |
| static int get_solaris_eeprom_parameter(const char *parameter, char *output); |
| static long get_max_solaris_processes(void); |
| #endif |
| |
| static int get_load_dev(void); |
| static int count_users(void); |
| extern int count_processes(void); |
| extern int swrun_count_processes(void); |
| |
| /********************* |
| * |
| * Initialisation & common implementation functions |
| * |
| *********************/ |
| |
| #define HRSYS_UPTIME 1 |
| #define HRSYS_DATE 2 |
| #define HRSYS_LOAD_DEV 3 |
| #define HRSYS_LOAD_PARAM 4 |
| #define HRSYS_USERS 5 |
| #define HRSYS_PROCS 6 |
| #define HRSYS_MAXPROCS 7 |
| |
| #if defined(solaris2) |
| #ifndef NETSNMP_NO_WRITE_SUPPORT |
| struct variable2 hrsystem_variables[] = { |
| {HRSYS_UPTIME, ASN_TIMETICKS, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {1}}, |
| {HRSYS_DATE, ASN_OCTET_STR, NETSNMP_OLDAPI_RWRITE, |
| var_hrsys, 1, {2}}, |
| {HRSYS_LOAD_DEV, ASN_INTEGER, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {3}}, |
| {HRSYS_LOAD_PARAM, ASN_OCTET_STR, NETSNMP_OLDAPI_RWRITE, |
| var_hrsys, 1, {4}}, |
| {HRSYS_USERS, ASN_GAUGE, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {5}}, |
| {HRSYS_PROCS, ASN_GAUGE, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {6}}, |
| {HRSYS_MAXPROCS, ASN_INTEGER, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {7}} |
| }; |
| #else /* !NETSNMP_NO_WRITE_SUPPORT */ |
| struct variable2 hrsystem_variables[] = { |
| {HRSYS_UPTIME, ASN_TIMETICKS, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {1}}, |
| {HRSYS_DATE, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {2}}, |
| {HRSYS_LOAD_DEV, ASN_INTEGER, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {3}}, |
| {HRSYS_LOAD_PARAM, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {4}}, |
| {HRSYS_USERS, ASN_GAUGE, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {5}}, |
| {HRSYS_PROCS, ASN_GAUGE, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {6}}, |
| {HRSYS_MAXPROCS, ASN_INTEGER, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {7}} |
| }; |
| #endif /* !NETSNMP_NO_WRITE_SUPPORT */ |
| #else |
| struct variable2 hrsystem_variables[] = { |
| {HRSYS_UPTIME, ASN_TIMETICKS, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {1}}, |
| {HRSYS_DATE, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {2}}, |
| {HRSYS_LOAD_DEV, ASN_INTEGER, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {3}}, |
| {HRSYS_LOAD_PARAM, ASN_OCTET_STR, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {4}}, |
| {HRSYS_USERS, ASN_GAUGE, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {5}}, |
| {HRSYS_PROCS, ASN_GAUGE, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {6}}, |
| {HRSYS_MAXPROCS, ASN_INTEGER, NETSNMP_OLDAPI_RONLY, |
| var_hrsys, 1, {7}} |
| }; |
| #endif |
| |
| oid hrsystem_variables_oid[] = { 1, 3, 6, 1, 2, 1, 25, 1 }; |
| |
| |
| void |
| init_hr_system(void) |
| { |
| #ifdef NPROC_SYMBOL |
| auto_nlist(NPROC_SYMBOL, 0, 0); |
| #endif |
| |
| REGISTER_MIB("host/hr_system", hrsystem_variables, variable2, |
| hrsystem_variables_oid); |
| } /* end init_hr_system */ |
| |
| /* |
| * header_hrsys(... |
| * Arguments: |
| * vp IN - pointer to variable entry that points here |
| * name IN/OUT - IN/name requested, OUT/name found |
| * length IN/OUT - length of IN/OUT oid's |
| * exact IN - TRUE if an exact match was requested |
| * var_len OUT - length of variable or 0 if function returned |
| * write_method |
| */ |
| |
| int |
| header_hrsys(struct variable *vp, |
| oid * name, |
| size_t * length, |
| int exact, size_t * var_len, WriteMethod ** write_method) |
| { |
| #define HRSYS_NAME_LENGTH 9 |
| oid newname[MAX_OID_LEN]; |
| int result; |
| |
| DEBUGMSGTL(("host/hr_system", "var_hrsys: ")); |
| DEBUGMSGOID(("host/hr_system", name, *length)); |
| DEBUGMSG(("host/hr_system", " %d\n", exact)); |
| |
| memcpy((char *) newname, (char *) vp->name, vp->namelen * sizeof(oid)); |
| newname[HRSYS_NAME_LENGTH] = 0; |
| result = snmp_oid_compare(name, *length, newname, vp->namelen + 1); |
| if ((exact && (result != 0)) || (!exact && (result >= 0))) |
| return (MATCH_FAILED); |
| memcpy((char *) name, (char *) newname, |
| (vp->namelen + 1) * sizeof(oid)); |
| *length = vp->namelen + 1; |
| |
| *write_method = (WriteMethod*)0; |
| *var_len = sizeof(long); /* default to 'long' results */ |
| return (MATCH_SUCCEEDED); |
| } /* end header_hrsys */ |
| |
| |
| /********************* |
| * |
| * System specific implementation functions |
| * |
| *********************/ |
| |
| u_char * |
| var_hrsys(struct variable * vp, |
| oid * name, |
| size_t * length, |
| int exact, size_t * var_len, WriteMethod ** write_method) |
| { |
| static char string[129]; /* per MIB, max size is 128 */ |
| #if defined(solaris2) |
| /* max size of nvram property */ |
| char bootparam[8192]; |
| #endif |
| time_t now; |
| #ifdef linux |
| FILE *fp; |
| #endif |
| #if NETSNMP_CAN_USE_SYSCTL && defined(CTL_KERN) && defined(KERN_MAXPROC) |
| static int maxproc_mib[] = { CTL_KERN, KERN_MAXPROC }; |
| size_t buf_size; |
| #endif |
| #if defined(hpux10) || defined(hpux11) |
| struct pst_static pst_buf; |
| #endif |
| |
| if (header_hrsys(vp, name, length, exact, var_len, write_method) == |
| MATCH_FAILED) |
| return NULL; |
| |
| switch (vp->magic) { |
| case HRSYS_UPTIME: |
| long_return = get_uptime(); |
| return (u_char *) & long_return; |
| case HRSYS_DATE: |
| #if defined(HAVE_MKTIME) && defined(HAVE_STIME) |
| #ifndef NETSNMP_NO_WRITE_SUPPORT |
| *write_method=ns_set_time; |
| #endif /* !NETSNMP_NO_WRITE_SUPPORT */ |
| #endif |
| time(&now); |
| return (u_char *) date_n_time(&now, var_len); |
| case HRSYS_LOAD_DEV: |
| long_return = get_load_dev(); |
| return (u_char *) & long_return; |
| case HRSYS_LOAD_PARAM: |
| #ifdef linux |
| if((fp = fopen("/proc/cmdline", "r")) != NULL) { |
| fgets(string, sizeof(string), fp); |
| fclose(fp); |
| } else { |
| return NULL; |
| } |
| #elif defined(solaris2) |
| #ifndef NETSNMP_NO_WRITE_SUPPORT |
| *write_method=set_solaris_bootcommand_parameter; |
| #endif /* !NETSNMP_NO_WRITE_SUPPORT */ |
| if ( get_solaris_eeprom_parameter("boot-command",bootparam) ) { |
| snmp_log(LOG_ERR,"unable to lookup boot-command from eeprom\n"); |
| return NULL; |
| } |
| strlcpy(string,bootparam,sizeof(string)); |
| #else |
| #if NETSNMP_NO_DUMMY_VALUES |
| return NULL; |
| #endif |
| sprintf(string, "ask Dave"); /* XXX */ |
| #endif |
| *var_len = strlen(string); |
| return (u_char *) string; |
| case HRSYS_USERS: |
| long_return = count_users(); |
| return (u_char *) & long_return; |
| case HRSYS_PROCS: |
| #if USING_HOST_DATA_ACCESS_SWRUN_MODULE |
| long_return = swrun_count_processes(); |
| #elif USING_HOST_HR_SWRUN_MODULE |
| long_return = count_processes(); |
| #else |
| #if NETSNMP_NO_DUMMY_VALUES |
| return NULL; |
| #endif |
| long_return = 0; |
| #endif |
| return (u_char *) & long_return; |
| case HRSYS_MAXPROCS: |
| #if defined(NR_TASKS) |
| long_return = NR_TASKS; /* <linux/tasks.h> */ |
| #elif NETSNMP_CAN_USE_SYSCTL && defined(CTL_KERN) && defined(KERN_MAXPROC) |
| { |
| int nproc = 0; |
| |
| buf_size = sizeof(nproc); |
| if (sysctl(maxproc_mib, 2, &nproc, &buf_size, NULL, 0) < 0) |
| return NULL; |
| long_return = nproc; |
| } |
| #elif defined(hpux10) || defined(hpux11) |
| pstat_getstatic(&pst_buf, sizeof(struct pst_static), 1, 0); |
| long_return = pst_buf.max_proc; |
| #elif defined(solaris2) |
| long_return = get_max_solaris_processes(); |
| if (long_return == -1) |
| return NULL; |
| #elif defined(NPROC_SYMBOL) |
| { |
| int nproc = 0; |
| |
| auto_nlist(NPROC_SYMBOL, (char *) &nproc, sizeof(nproc)); |
| long_return = nproc; |
| } |
| #else |
| #if NETSNMP_NO_DUMMY_VALUES |
| return NULL; |
| #endif |
| long_return = 0; |
| #endif |
| return (u_char *) & long_return; |
| default: |
| DEBUGMSGTL(("snmpd", "unknown sub-id %d in var_hrsys\n", |
| vp->magic)); |
| } |
| return NULL; |
| } /* end var_hrsys */ |
| |
| |
| /********************* |
| * |
| * Internal implementation functions |
| * |
| *********************/ |
| |
| |
| #if defined(solaris2) |
| |
| /* functions for malloc and freeing openpromio structure */ |
| static struct openpromio * op_malloc(size_t size) |
| { |
| struct openpromio *op; |
| op=malloc(sizeof(struct openpromio) + size); |
| if(op == NULL) { |
| snmp_log(LOG_ERR,"unable to malloc memory\n"); |
| return NULL; |
| } |
| |
| memset(op, 0, sizeof(struct openpromio)+size); |
| op->oprom_size=size; |
| |
| return op; |
| } |
| |
| static void op_free(struct openpromio *op) { |
| free(op); |
| } |
| |
| #ifndef NETSNMP_NO_WRITE_SUPPORT |
| static int |
| set_solaris_bootcommand_parameter(int action, |
| u_char * var_val, |
| u_char var_val_type, |
| size_t var_val_len, |
| u_char * statP, oid * name, size_t name_len) { |
| |
| static char old_value[1024],*p_old_value=old_value; |
| int status=0; |
| |
| switch (action) { |
| case RESERVE1: |
| /* check type */ |
| if (var_val_type != ASN_OCTET_STR) { |
| snmp_log(LOG_ERR,"write to set_solaris_bootcommand_parameter not ASN_OCTET_STR\n"); |
| return SNMP_ERR_WRONGTYPE; |
| } |
| break; |
| |
| case RESERVE2: { |
| /* create copy of old value */ |
| if(statP) { |
| int old_val_len=strlen(statP); |
| if(old_val_len >= sizeof(old_value)) { |
| p_old_value=(char *)malloc(old_val_len+1); |
| if(p_old_value==NULL) { |
| snmp_log(LOG_ERR,"unable to malloc memory\n"); |
| return SNMP_ERR_GENERR; |
| } |
| } |
| strlcpy(p_old_value,statP,old_val_len+1); |
| } else { |
| p_old_value=NULL; |
| } |
| break; |
| } |
| |
| case ACTION: { |
| status=set_solaris_eeprom_parameter("boot-command",(char *)var_val,var_val_len); |
| if(status!=0) return SNMP_ERR_GENERR; |
| break; |
| } |
| |
| case UNDO: { |
| /* revert to old value */ |
| if(p_old_value) { |
| status=set_solaris_eeprom_parameter("boot-command",(char *)p_old_value,strlen(p_old_value)); |
| p_old_value=old_value; |
| if(status!=0) return SNMP_ERR_GENERR; |
| } |
| break; |
| } |
| |
| case FREE: |
| case COMMIT: |
| /* free memory if necessary */ |
| if(p_old_value != old_value) { |
| free(p_old_value); |
| p_old_value=old_value; |
| } |
| break; |
| } |
| return SNMP_ERR_NOERROR; |
| } |
| #endif /* !NETSNMP_NO_WRITE_SUPPORT */ |
| |
| static int set_solaris_eeprom_parameter(const char *key, const char *value, |
| size_t var_val_len) { |
| |
| int status=0; |
| char buffer[1024],*pbuffer=buffer; |
| |
| if( strlen(key)+strlen(value)+16 > sizeof(buffer) ) { |
| pbuffer=(char *)malloc(strlen(key)+strlen(value)+16); |
| } |
| |
| |
| sprintf(pbuffer, "eeprom %s=\"%.*s\"\n", key, var_val_len, value); |
| |
| status=system(pbuffer); |
| |
| if(pbuffer!=buffer) free(pbuffer); |
| return status; |
| } |
| |
| static int get_solaris_eeprom_parameter(const char *parameter, char *outbuffer) { |
| |
| int fd=0,status=0; |
| struct openpromio *openprominfo=NULL; |
| |
| fd=open("/dev/openprom",O_RDONLY); |
| if ( fd == -1 ) { |
| snmp_log_perror("/dev/openprom"); |
| return 1; |
| } |
| |
| openprominfo = op_malloc(8192); |
| if(!openprominfo) return 1; |
| |
| strcpy(openprominfo->oprom_array,parameter); |
| |
| status=ioctl(fd,OPROMGETOPT,openprominfo); |
| if ( status == -1 ) { |
| snmp_log_perror("/dev/openprom"); |
| close(fd); |
| op_free(openprominfo); |
| return 1; |
| } |
| strcpy(outbuffer,openprominfo->oprom_array); |
| |
| op_free(openprominfo); |
| |
| /* close file */ |
| close(fd); |
| |
| return(0); |
| } |
| |
| static long get_max_solaris_processes(void) { |
| |
| kstat_ctl_t *ksc=NULL; |
| kstat_t *ks=NULL; |
| struct var v; |
| static long maxprocs=-1; |
| |
| /* assume only necessary to compute once, since /etc/system must be modified */ |
| if (maxprocs == -1) { |
| if ( (ksc=kstat_open()) != NULL && |
| (ks=kstat_lookup(ksc, "unix", 0, "var")) != NULL && |
| (kstat_read(ksc, ks, &v) != -1)) { |
| |
| maxprocs=v.v_proc; |
| } |
| if(ksc) { |
| kstat_close(ksc); |
| } |
| } |
| |
| return maxprocs; |
| } |
| |
| #endif |
| |
| #if defined(HAVE_MKTIME) && defined(HAVE_STIME) |
| #ifndef NETSNMP_NO_WRITE_SUPPORT |
| int |
| ns_set_time(int action, |
| u_char * var_val, |
| u_char var_val_type, |
| size_t var_val_len, |
| u_char * statP, oid * name, size_t name_len) |
| { |
| |
| static time_t oldtime=0; |
| |
| switch (action) { |
| case RESERVE1: |
| /* check type */ |
| if (var_val_type != ASN_OCTET_STR) { |
| snmp_log(LOG_ERR,"write to ns_set_time not ASN_OCTET_STR\n"); |
| return SNMP_ERR_WRONGTYPE; |
| } |
| if (var_val_len != 8 && var_val_len!=11) { |
| snmp_log(LOG_ERR,"write to ns_set_time not a proper length\n"); |
| return SNMP_ERR_WRONGVALUE; |
| } |
| break; |
| |
| case RESERVE2: |
| break; |
| |
| case FREE: |
| break; |
| |
| case ACTION: { |
| long status=0; |
| time_t seconds=0; |
| struct tm newtimetm; |
| int hours_from_utc= 0; |
| int minutes_from_utc= 0; |
| |
| if (var_val_len == 11) { |
| /* timezone inforamation was present */ |
| hours_from_utc=(int)var_val[9]; |
| minutes_from_utc=(int)var_val[10]; |
| } |
| |
| newtimetm.tm_sec=(int)var_val[6];; |
| newtimetm.tm_min=(int)var_val[5]; |
| newtimetm.tm_hour=(int)var_val[4]; |
| |
| newtimetm.tm_mon=(int)var_val[2]-1; |
| newtimetm.tm_year=256*(int)var_val[0]+(int)var_val[1]-1900; |
| newtimetm.tm_mday=(int)var_val[3]; |
| |
| /* determine if day light savings time in effect DST */ |
| if ( ( hours_from_utc*60*60+minutes_from_utc*60 ) == abs(timezone) ) { |
| newtimetm.tm_isdst=0; |
| } else { |
| newtimetm.tm_isdst=1; |
| } |
| |
| /* create copy of old value */ |
| oldtime=time(NULL); |
| |
| seconds=mktime(&newtimetm); |
| if(seconds == (time_t)-1) { |
| snmp_log(LOG_ERR, "Unable to convert time value\n"); |
| return SNMP_ERR_GENERR; |
| } |
| status=stime(&seconds); |
| if(status!=0) { |
| snmp_log(LOG_ERR, "Unable to set time\n"); |
| return SNMP_ERR_GENERR; |
| } |
| break; |
| } |
| case UNDO: { |
| /* revert to old value */ |
| int status=0; |
| if(oldtime != 0) { |
| status=stime(&oldtime); |
| oldtime=0; |
| if(status!=0) { |
| snmp_log(LOG_ERR, "Unable to set time\n"); |
| return SNMP_ERR_GENERR; |
| } |
| } |
| break; |
| } |
| |
| case COMMIT: { |
| oldtime=0; |
| break; |
| } |
| } |
| return SNMP_ERR_NOERROR; |
| } |
| #endif /* !NETSNMP_NO_WRITE_SUPPORT */ |
| #endif |
| |
| /* |
| * Return the DeviceIndex corresponding |
| * to the boot device |
| */ |
| static int |
| get_load_dev(void) |
| { |
| return (HRDEV_DISK << HRDEV_TYPE_SHIFT); /* XXX */ |
| } /* end get_load_dev */ |
| |
| static int |
| count_users(void) |
| { |
| int total = 0; |
| #ifndef WIN32 |
| #if HAVE_UTMPX_H |
| #define setutent setutxent |
| #define pututline pututxline |
| #define getutent getutxent |
| #define endutent endutxent |
| struct utmpx *utmp_p; |
| #else |
| struct utmp *utmp_p; |
| #endif |
| |
| setutent(); |
| while ((utmp_p = getutent()) != NULL) { |
| #ifndef UTMP_HAS_NO_TYPE |
| if (utmp_p->ut_type != USER_PROCESS) |
| continue; |
| #endif |
| #ifndef UTMP_HAS_NO_PID |
| /* This block of code fixes zombie user PIDs in the |
| utmp/utmpx file that would otherwise be counted as a |
| current user */ |
| if (kill(utmp_p->ut_pid, 0) == -1 && errno == ESRCH) { |
| utmp_p->ut_type = DEAD_PROCESS; |
| pututline(utmp_p); |
| continue; |
| } |
| #endif |
| ++total; |
| } |
| endutent(); |
| #else /* WIN32 */ |
| /* |
| * TODO - Error checking. |
| */ |
| LPWKSTA_INFO_102 wkinfo; |
| NET_API_STATUS nstatus; |
| |
| nstatus = NetWkstaGetInfo(NULL, 102, (LPBYTE*)&wkinfo); |
| if (nstatus != NERR_Success) { |
| return 0; |
| } |
| total = (int)wkinfo->wki102_logged_on_users; |
| |
| NetApiBufferFree(wkinfo); |
| #endif /* WIN32 */ |
| return total; |
| } |
| |
| #if defined(UTMP_FILE) && !HAVE_UTMPX_H |
| |
| static FILE *utmp_file; |
| static struct utmp utmp_rec; |
| |
| void |
| setutent(void) |
| { |
| if (utmp_file) |
| fclose(utmp_file); |
| utmp_file = fopen(UTMP_FILE, "r"); |
| } |
| |
| void |
| endutent(void) |
| { |
| if (utmp_file) { |
| fclose(utmp_file); |
| utmp_file = NULL; |
| } |
| } |
| |
| struct utmp * |
| getutent(void) |
| { |
| if (!utmp_file) |
| return NULL; |
| while (fread(&utmp_rec, sizeof(utmp_rec), 1, utmp_file) == 1) |
| if (*utmp_rec.ut_name && *utmp_rec.ut_line) |
| return &utmp_rec; |
| return NULL; |
| } |
| |
| #endif /* UTMP_FILE */ |
