man2/getdomainname.2

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   3 .\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
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  25 .\" Modified 1997-08-25 by Nicolás Lichtmaier <nick@debian.org>
  26 .\" Modified 2004-06-17 by Michael Kerrisk <mtk-manpages@gmx.net>
  27 .\"
  28 .TH GETDOMAINNAME 2 2004-06-17 "Linux 2.6.7" "Linux Programmer's Manual"
  29 .SH NAME
  30 getdomainname, setdomainname \- get/set domain name
  31 .SH SYNOPSIS
  32 .B #include <unistd.h>
  33 .sp
  34 .BI "int getdomainname(char *" name ", size_t " len );
  35 .br
  36 .BI "int setdomainname(const char *" name ", size_t " len );
  37 .SH DESCRIPTION
  38 These functions are used to access or to change the domain name of the
  39 current processor.
  40 If the NUL-terminated domain name requires more than \fIlen\fP bytes,
  41 .B getdomainname
  42 returns the first \fIlen\fP bytes (glibc) or returns an error (libc).
  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 For
  51 .BR setdomainname :
  52 .I name
  53 pointed outside of user address space.
  54 .TP
  55 .B EINVAL
  56 For
  57 .BR getdomainname
  58 under libc:
  59 .I name
  60 is
  61 .B NULL
  62 or
  63 .I name
  64 is longer than
  65 .I len
  66 bytes.
  67 .TP
  68 .B EINVAL
  69 For
  70 .BR setdomainname :
  71 .I len
  72 was negative or too large.
  73 .TP
  74 .B EPERM
  75 For
  76 .BR setdomainname :
  77 the caller is unprivileged (Linux: does not have the
  78 .B CAP_SYS_ADMIN
  79 capability).
  80 .SH "CONFORMING TO"
  81 POSIX does not specify these calls.
  82 .SH "SEE ALSO"
  83 .BR gethostname (2),
  84 .BR sethostname (2),
  85 .BR uname (2)