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ip/tftpd: accept an address to announce to as an argument.

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This commit is contained in:
Jacob Moody 2024-10-30 21:46:39 +00:00
parent 1454ec6425
commit 5969b872bb
2 changed files with 18 additions and 4 deletions
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10
sys/man/8/dhcpd
View file

@ -46,6 +46,9 @@ dhcpd, dhcp6d, dhcpleases, rarpd, tftpd \- Internet booting
.IR nsfile ]
.RB [ -m
.IR mapfile ]
[
.I addr
]
.SH DESCRIPTION
These programs support booting over the Internet.
They should all be run on the same server to
@ -295,6 +298,13 @@ transfers files to systems that are booting.
It runs as user
.B none
and can only access files with global read permission.
By default
.I tftpd
announces on all local IPs found on
.IR netmtpt ,
the
.I addr
argument may be used to specify a single local address to use.
The options are:
.TP
.B d

12
sys/src/cmd/ip/tftpd.c
View file

@ -119,7 +119,7 @@ static char *opnames[] = {
void
usage(void)
{
fprint(2, "usage: %s [-dr] [-h homedir] [-s svc] [-x netmtpt] [-n nsfile] [-m mapfile]\n",
fprint(2, "usage: %s [-dr] [-h homedir] [-s svc] [-x netmtpt] [-n nsfile] [-m mapfile] [addr]\n",
argv0);
exits("usage");
}
@ -127,10 +127,11 @@ usage(void)
void
main(int argc, char **argv)
{
char buf[64];
char buf[128];
char adir[64], ldir[64];
int cfd, lcfd, dfd;
char *svc = "69";
char *svc = "tftp";
char *addr = "*";
setnetmtpt(net, sizeof net, nil);
ARGBEGIN{
@ -158,6 +159,8 @@ main(int argc, char **argv)
default:
usage();
}ARGEND
if(argc)
addr = argv[0];
dirsllen = strlen(homedir);
while(dirsllen > 0 && homedir[dirsllen-1] == '/')
@ -185,10 +188,11 @@ main(int argc, char **argv)
exits(0);
}
snprint(buf, sizeof buf, "%s/udp!*!%s", net, svc);
snprint(buf, sizeof buf, "%s/udp!%s!%s", net, addr, svc);
cfd = announce(buf, adir);
if (cfd < 0)
sysfatal("announcing on %s: %r", buf);
procsetname("%s", buf);
syslog(dbg, flog, "tftpd started on %s dir %s", buf, adir);
for(;;) {
lcfd = listen(adir, ldir);