man2/stime.2

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   3 .\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
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  25 .\" Modified by Michael Haardt <michael@moria.de>
  26 .\" Modified 1993-07-24 by Rik Faith <faith@cs.unc.edu>
  27 .\" Modified 2001-03-16 by Andries Brouwer <aeb@cwi.nl>
  28 .\" Modified 2004-05-27 by Michael Kerrisk <mtk-manpages@gmx.net>
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  30 .TH STIME 2 2004-05-27 "Linux 2.6.6" "Linux Programmer's Manual"
  31 .SH NAME
  32 stime \- set time
  33 .SH SYNOPSIS
  34 .BR "#define _SVID_SOURCE" " /* glibc2 needs this */"
  35 .br
  36 .B #include <time.h>
  37 .sp
  38 .BI "int stime(time_t *" t );
  39 .SH DESCRIPTION
  40 \fBstime\fP() sets the system's idea of the time and date.  Time, pointed
  41 to by \fIt\fP, is measured in seconds from 00:00:00 GMT January 1, 1970.
  42 \fBstime()\fP may only be executed by the superuser.
  43 .SH "RETURN VALUE"
  44 On success, zero is returned.  On error, \-1 is returned, and
  45 .I errno
  46 is set appropriately.
  47 .SH ERRORS
  48 .TP
  49 .B EFAULT
  50 Error in getting information from user space.
  51 .TP
  52 .B EPERM
  53 The calling process has insufficient privilege.
  54 Under Linux the
  55 .B CAP_SYS_TIME
  56 privilege is required.
  57 .SH "CONFORMING TO"
  58 SVr4, SVID, X/OPEN
  59 .SH NOTES
  60 Under glibc2,
  61 .I <time.h>
  62 only provides a prototype when
  63 .B _SVID_SOURCE
  64 is defined.
  65 .SH "SEE ALSO"
  66 .BR date (1),
  67 .BR settimeofday (2),
  68 .BR capabilities (7)