| gettimeofday.2 (22134) | gettimeofday.2 (23660) |
|---|---|
| 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 15 unchanged lines hidden (view full) --- 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" | 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 15 unchanged lines hidden (view full) --- 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" |
| 32.\" @(#)gettimeofday.2 8.1 (Berkeley) 6/4/93 | 32.\" @(#)gettimeofday.2 8.2 (Berkeley) 5/26/95 |
| 33.\" | 33.\" |
| 34.Dd June 4, 1993 | 34.Dd May 26, 1995 |
| 35.Dt GETTIMEOFDAY 2 36.Os BSD 4 37.Sh NAME 38.Nm gettimeofday , 39.Nm settimeofday 40.Nd get/set date and time 41.Sh SYNOPSIS 42.Fd #include <sys/time.h> --- 45 unchanged lines hidden (view full) --- 88.Fa timezone 89structure indicates the local time zone 90(measured in minutes of time westward from Greenwich), 91and a flag that, if nonzero, indicates that 92Daylight Saving time applies locally during 93the appropriate part of the year. 94.Pp 95Only the super-user may set the time of day or time zone. | 35.Dt GETTIMEOFDAY 2 36.Os BSD 4 37.Sh NAME 38.Nm gettimeofday , 39.Nm settimeofday 40.Nd get/set date and time 41.Sh SYNOPSIS 42.Fd #include <sys/time.h> --- 45 unchanged lines hidden (view full) --- 88.Fa timezone 89structure indicates the local time zone 90(measured in minutes of time westward from Greenwich), 91and a flag that, if nonzero, indicates that 92Daylight Saving time applies locally during 93the appropriate part of the year. 94.Pp 95Only the super-user may set the time of day or time zone. |
| 96If the system is running in secure mode (see 97.Xr init 8 ), 98the time may only be advanced. 99This limitation is imposed to prevent a malicious super-user 100from setting arbitrary time stamps on files. 101The system time can still be adjusted backwards using the 102.Xr adjtime 2 103system call even when the system is secure. |
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| 96.Sh RETURN 97A 0 return value indicates that the call succeeded. 98A -1 return value indicates an error occurred, and in this 99case an error code is stored into the global variable 100.Va errno . 101.Sh ERRORS 102The following error codes may be set in 103.Va errno : --- 17 unchanged lines hidden --- | 104.Sh RETURN 105A 0 return value indicates that the call succeeded. 106A -1 return value indicates an error occurred, and in this 107case an error code is stored into the global variable 108.Va errno . 109.Sh ERRORS 110The following error codes may be set in 111.Va errno : --- 17 unchanged lines hidden --- |