diff options
Diffstat (limited to 'login/programs/utmpdump.c')
| -rw-r--r-- | login/programs/utmpdump.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/login/programs/utmpdump.c b/login/programs/utmpdump.c index d1b5da235c..225b67a265 100644 --- a/login/programs/utmpdump.c +++ b/login/programs/utmpdump.c @@ -27,6 +27,17 @@ static void print_entry (struct utmp *up) { + /* Mixed 32-/64-bit systems may have timeval structs of different sixe + but need struct utmp to be the same size. So in 64-bit up->ut_tv may + not be a timeval but a struct of __int32_t's. This would cause a compile + time warning and a formating error when 32-bit int is passed where + a 64-bit long is expected. So copy up->up_tv to a temporary timeval. + This is 32-/64-bit agnostic and expands the timeval fields to the + expected size as needed. */ + struct timeval temp_tv; + temp_tv.tv_sec = up->ut_tv.tv_sec; + temp_tv.tv_usec = up->ut_tv.tv_usec; + (printf) ( /* The format string. */ #if _HAVE_UT_TYPE @@ -62,8 +73,8 @@ print_entry (struct utmp *up) , up->ut_host #endif #if _HAVE_UT_TV - , 4 + ctime (&up->ut_tv.tv_sec) - , up->ut_tv.tv_usec + , 4 + ctime (&temp_tv.tv_sec) + , temp_tv.tv_usec #else , 4 + ctime (&up->ut_time) #endif |