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Merge pull request #11 from EdSchouten/master 

Make utmp-handling more standards-compliant.
This commit is contained in:
Martin Englund 2013-05-08 08:30:09 -07:00
parent 91aead2fd3 67b476efe0
commit 83fbcbeb4e
2 changed files with 25 additions and 115 deletions
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2
configure.ac
View File

@ -73,7 +73,7 @@ case $host_os in
esac
AC_MSG_RESULT([$SRC_OS])
AC_CHECK_HEADERS(libproc.h valgrind/valgrind.h)
AC_CHECK_HEADERS(utmp.h utmpx.h libproc.h valgrind/valgrind.h)
if test $ac_cv_header_libproc_h = yes; then
AC_DEFINE(DARWIN_HAS_LIBPROC_H, [1], [sigar named them DARWIN_HAS_... instead of HAVE_])
fi

136
src/sigar.c
View File

@ -30,6 +30,11 @@
#ifndef WIN32
#include <arpa/inet.h>
#endif
#if defined(HAVE_UTMPX_H)
# include <utmpx.h>
#elif defined(HAVE_UTMP_H)
# include <utmp.h>
#endif
#include "sigar.h"
#include "sigar_private.h"
@ -1024,40 +1029,7 @@ SIGAR_DECLARE(int) sigar_who_list_destroy(sigar_t *sigar,
return SIGAR_OK;
}
#ifdef DARWIN
#include <AvailabilityMacros.h>
#endif
#ifdef MAC_OS_X_VERSION_10_5
# if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
# define SIGAR_NO_UTMP
# endif
/* else 10.4 and earlier or compiled with -mmacosx-version-min=10.3 */
#endif
#if defined(__sun)
# include <utmpx.h>
# define SIGAR_UTMP_FILE _UTMPX_FILE
# define ut_time ut_tv.tv_sec
#elif defined(WIN32)
/* XXX may not be the default */
#define SIGAR_UTMP_FILE "C:\\cygwin\\var\\run\\utmp"
#define UT_LINESIZE 16
#define UT_NAMESIZE 16
#define UT_HOSTSIZE 256
#define UT_IDLEN 2
#define ut_name ut_user
struct utmp {
short ut_type;
int ut_pid;
char ut_line[UT_LINESIZE];
char ut_id[UT_IDLEN];
time_t ut_time;
char ut_user[UT_NAMESIZE];
char ut_host[UT_HOSTSIZE];
long ut_addr;
};
#elif defined(NETWARE)
#if defined(NETWARE)
static char *getpass(const char *prompt)
{
static char password[BUFSIZ];
@ -1067,109 +1039,48 @@ static char *getpass(const char *prompt)
return (char *)&password;
}
#elif !defined(SIGAR_NO_UTMP)
# include <utmp.h>
# ifdef UTMP_FILE
# define SIGAR_UTMP_FILE UTMP_FILE
# else
# define SIGAR_UTMP_FILE _PATH_UTMP
# endif
#endif
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(DARWIN)
# define ut_user ut_name
#endif
#ifdef DARWIN
/* XXX from utmpx.h; sizeof changed in 10.5 */
/* additionally, utmpx does not work on 10.4 */
#define SIGAR_HAS_UTMPX
#define _PATH_UTMPX "/var/run/utmpx"
#define _UTX_USERSIZE 256 /* matches MAXLOGNAME */
#define _UTX_LINESIZE 32
#define _UTX_IDSIZE 4
#define _UTX_HOSTSIZE 256
struct utmpx {
char ut_user[_UTX_USERSIZE]; /* login name */
char ut_id[_UTX_IDSIZE]; /* id */
char ut_line[_UTX_LINESIZE]; /* tty name */
pid_t ut_pid; /* process id creating the entry */
short ut_type; /* type of this entry */
struct timeval ut_tv; /* time entry was created */
char ut_host[_UTX_HOSTSIZE]; /* host name */
__uint32_t ut_pad[16]; /* reserved for future use */
};
#define ut_xtime ut_tv.tv_sec
#define UTMPX_USER_PROCESS 7
/* end utmpx.h */
#define SIGAR_UTMPX_FILE _PATH_UTMPX
#endif
#if !defined(NETWARE) && !defined(_AIX)
#define WHOCPY(dest, src) \
SIGAR_SSTRCPY(dest, src); \
if (sizeof(src) < sizeof(dest)) \
dest[sizeof(src)] = '\0'
#ifdef SIGAR_HAS_UTMPX
static int sigar_who_utmpx(sigar_t *sigar,
static int sigar_who_utmp(sigar_t *sigar,
sigar_who_list_t *wholist)
{
FILE *fp;
struct utmpx ut;
#if defined(HAVE_UTMPX_H)
struct utmpx *ut;
if (!(fp = fopen(SIGAR_UTMPX_FILE, "r"))) {
return errno;
}
setutxent();
while (fread(&ut, sizeof(ut), 1, fp) == 1) {
while ((ut = getutxent()) != NULL) {
sigar_who_t *who;
if (*ut.ut_user == '\0') {
if (*ut->ut_user == '\0') {
continue;
}
#ifdef UTMPX_USER_PROCESS
if (ut.ut_type != UTMPX_USER_PROCESS) {
if (ut->ut_type != USER_PROCESS) {
continue;
}
#endif
SIGAR_WHO_LIST_GROW(wholist);
who = &wholist->data[wholist->number++];
WHOCPY(who->user, ut.ut_user);
WHOCPY(who->device, ut.ut_line);
WHOCPY(who->host, ut.ut_host);
WHOCPY(who->user, ut->ut_user);
WHOCPY(who->device, ut->ut_line);
WHOCPY(who->host, ut->ut_host);
who->time = ut.ut_xtime;
who->time = ut->ut_tv.tv_sec;
}
fclose(fp);
return SIGAR_OK;
}
#endif
#if defined(SIGAR_NO_UTMP) && defined(SIGAR_HAS_UTMPX)
#define sigar_who_utmp sigar_who_utmpx
#else
static int sigar_who_utmp(sigar_t *sigar,
sigar_who_list_t *wholist)
{
endutxent();
#elif defined(HAVE_UTMP_H)
FILE *fp;
#ifdef __sun
/* use futmpx w/ pid32_t for sparc64 */
struct futmpx ut;
#else
struct utmp ut;
#endif
if (!(fp = fopen(SIGAR_UTMP_FILE, "r"))) {
#ifdef SIGAR_HAS_UTMPX
/* Darwin 10.5 */
return sigar_who_utmpx(sigar, wholist);
#endif
if (!(fp = fopen(_PATH_UTMP, "r"))) {
return errno;
}
@ -1189,7 +1100,7 @@ static int sigar_who_utmp(sigar_t *sigar,
SIGAR_WHO_LIST_GROW(wholist);
who = &wholist->data[wholist->number++];
WHOCPY(who->user, ut.ut_user);
WHOCPY(who->user, ut.ut_name);
WHOCPY(who->device, ut.ut_line);
WHOCPY(who->host, ut.ut_host);
@ -1197,11 +1108,10 @@ static int sigar_who_utmp(sigar_t *sigar,
}
fclose(fp);
#endif
return SIGAR_OK;
}
#endif /* SIGAR_NO_UTMP */
#endif /* NETWARE */
#if defined(WIN32)