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Add gethostname(2).

This commit is contained in:
Jonas 'Sortie' Termansen 2013-04-13 00:42:13 +02:00
parent 931c0d1bc5
commit 57003dd777
3 changed files with 42 additions and 1 deletions
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1
libc/Makefile
View File

@ -220,6 +220,7 @@ getdtablesize.o \
getegid.o \
geteuid.o \
getgid.o \
gethostname.o \
getpagesize.o \
getpid.o \
getppid.o \

40
libc/gethostname.cpp Normal file
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@ -0,0 +1,40 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
gethostname.cpp
Get the hostname.
*******************************************************************************/
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
extern "C" int gethostname(char* name, size_t len)
{
const char* hostname = getenv("HOSTNAME");
if ( !hostname )
hostname = "sortix";
size_t hostname_len = strlen(hostname);
if ( len < hostname_len+1 )
return errno = ENAMETOOLONG, -1;
strcpy(name, hostname);
return 0;
}

2
libc/include/unistd.h
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@ -115,7 +115,6 @@ int fexecve(int, char* const [], char* const []);
long fpathconf(int, int);
int getgroups(int, gid_t []);
long gethostid(void);
int gethostname(char*, size_t);
char* getlogin(void);
int getlogin_r(char*, size_t);
int getopt(int, char* const [], const char*);
@ -170,6 +169,7 @@ char* getcwd(char*, size_t);
char* get_current_dir_name(void);
gid_t getegid(void);
uid_t geteuid(void);
int gethostname(char*, size_t);
pid_t getpid(void);
pid_t getppid(void);
uid_t getuid(void);