projects / unix-history / blame
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1 | .\" Copyright (c) 1983 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 6712d93b | 3 | .\" |
| 91cff1e1 | 4 | .\" %sccs.include.redist.man% |
| 88b3ccf2 | 5 | .\" |
| 91cff1e1 | 6 | .\" @(#)gethostname.3 6.6 (Berkeley) %G% |
| 6712d93b | 7 | .\" |
| 4d772387 | 8 | .TH GETHOSTNAME 2 "" |
| 6712d93b KM |
9 | .UC 5 |
| 10 | .SH NAME | |
| 11 | gethostname, sethostname \- get/set name of current host | |
| 12 | .SH SYNOPSIS | |
| 13 | .nf | |
| 14 | .ft B | |
| 15 | gethostname(name, namelen) | |
| 16 | char *name; | |
| 17 | int namelen; | |
| 18 | .PP | |
| 19 | .ft B | |
| 20 | sethostname(name, namelen) | |
| 21 | char *name; | |
| 22 | int namelen; | |
| 23 | .fi | |
| 24 | .SH DESCRIPTION | |
| 25 | .I Gethostname | |
| 26 | returns the standard host name for the current processor, as | |
| 27 | previously set by | |
| 28 | .IR sethostname . | |
| 29 | The parameter | |
| 30 | .I namelen | |
| 31 | specifies the size of the | |
| 32 | .I name | |
| 33 | array. The returned name is null-terminated unless insufficient | |
| 34 | space is provided. | |
| 35 | .PP | |
| 36 | .I Sethostname | |
| 37 | sets the name of the host machine to be | |
| 38 | .IR name , | |
| 39 | which has length | |
| 40 | .IR namelen . | |
| 41 | This call is restricted to the super-user and | |
| 42 | is normally used only when the system is bootstrapped. | |
| 43 | .SH "RETURN VALUE | |
| 44 | If the call succeeds a value of 0 is returned. If the call | |
| 45 | fails, then a value of \-1 is returned and an error code is | |
| 9570e264 | 46 | placed in the global location \fIerrno\fP. |
| 6712d93b KM |
47 | .SH "ERRORS |
| 48 | The following errors may be returned by these calls: | |
| 49 | .TP 15 | |
| 50 | [EFAULT] | |
| 51 | The \fIname\fP or \fInamelen\fP parameter gave an | |
| 52 | invalid address. | |
| 53 | .TP 15 | |
| 54 | [EPERM] | |
| fd690c8b | 55 | The caller tried to set the hostname and was not the super-user. |
| 6712d93b KM |
56 | .SH SEE ALSO |
| 57 | gethostid(2) | |
| 58 | .SH BUGS | |
| a9172a1e MK |
59 | Host names are limited to MAXHOSTNAMELEN (from |
| 60 | .IR <sys/param.h> ) | |
| 61 | characters, currently 64. |