man2/stime.2

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   3 .\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
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  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 .BR stime ()
  41 sets the system's idea of the time and date.
  42 Time, pointed
  43 to by \fIt\fP, is measured in seconds from 00:00:00 GMT January 1, 1970.
  44 .BR stime ()
  45 may only be executed by the superuser.
  46 .SH "RETURN VALUE"
  47 On success, zero is returned.
  48 On error, \-1 is returned, and
  49 .I errno
  50 is set appropriately.
  51 .SH ERRORS
  52 .TP
  53 .B EFAULT
  54 Error in getting information from user space.
  55 .TP
  56 .B EPERM
  57 The calling process has insufficient privilege.
  58 Under Linux the
  59 .B CAP_SYS_TIME
  60 privilege is required.
  61 .SH "CONFORMING TO"
  62 SVr4.
  63 .SH NOTES
  64 Under glibc2,
  65 .I <time.h>
  66 only provides a prototype when
  67 .B _SVID_SOURCE
  68 is defined.
  69 .SH "SEE ALSO"
  70 .BR date (1),
  71 .BR settimeofday (2),
  72 .BR capabilities (7),
  73 .BR feature_test_macros (7)