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/* hostname.c - Get/Set the hostname
*
* Copyright 2012 Andre Renaud <andre@bluewatersys.com>
*
* http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/hostname.html
USE_HOSTNAME(NEWTOY(hostname, "bF:", TOYFLAG_BIN))
config HOSTNAME
bool "hostname"
default y
help
usage: hostname [-b] [-F FILENAME] [newname]
Get/Set the current hostname
-b Set hostname to 'localhost' if otherwise unset
-F Set hostname to contents of FILENAME
*/
#define FOR_hostname
#include "toys.h"
GLOBALS(
char *fname;
)
void hostname_main(void)
{
char *hostname = *toys.optargs;
if (TT.fname && (hostname = xreadfile(TT.fname, 0, 0))) {
if (!*chomp(hostname)) {
if (CFG_TOYBOX_FREE) free(hostname);
if (!(toys.optflags&FLAG_b)) error_exit("empty '%s'", TT.fname);
hostname = 0;
}
}
if (!hostname && (toys.optflags&FLAG_b))
if (gethostname(toybuf, sizeof(toybuf)-1) || !*toybuf)
hostname = "localhost";
if (hostname) {
if (sethostname(hostname, strlen(hostname)))
perror_exit("set '%s'", hostname);
} else {
if (gethostname(toybuf, sizeof(toybuf)-1)) perror_exit("gethostname");
xputs(toybuf);
}
}
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