man2/stime.2

   1 .\" 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>
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  30 .TH STIME 2 2016-03-15 "Linux" "Linux Programmer's Manual"
  31 .SH NAME
  32 stime \- set time
  33 .SH SYNOPSIS
  34 .B #include <time.h>
  35 .PP
  36 .BI "int stime(const time_t *" t );
  37 .PP
  38 .in -4n
  39 Feature Test Macro Requirements for glibc (see
  40 .BR feature_test_macros (7)):
  41 .in
  42 .PP
  43 .BR stime ():
  44     Since glibc 2.19:
  45         _DEFAULT_SOURCE
  46     Glibc 2.19 and earlier:
  47         _SVID_SOURCE
  48 .SH DESCRIPTION
  49 .BR stime ()
  50 sets the system's idea of the time and date.
  51 The time, pointed
  52 to by \fIt\fP, is measured in seconds since the
  53 Epoch, 1970-01-01 00:00:00 +0000 (UTC).
  54 .BR stime ()
  55 may be executed only by the superuser.
  56 .SH RETURN VALUE
  57 On success, zero is returned.
  58 On error, \-1 is returned, and
  59 .I errno
  60 is set appropriately.
  61 .SH ERRORS
  62 .TP
  63 .B EFAULT
  64 Error in getting information from user space.
  65 .TP
  66 .B EPERM
  67 The calling process has insufficient privilege.
  68 Under Linux, the
  69 .B CAP_SYS_TIME
  70 privilege is required.
  71 .SH CONFORMING TO
  72 SVr4.
  73 .SH SEE ALSO
  74 .BR date (1),
  75 .BR settimeofday (2),
  76 .BR capabilities (7)