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telnet: shrink

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telnetd: shrink, and fix issue file printing
test: better and shorter usage text

function                                             old     new   delta
putiac2                                               51      50      -1
putiac                                                24      20      -4
handlenetoutput                                       95      91      -4
telnet_main                                         1480    1475      -5
iacflush                                              37      32      -5
make_new_session                                     436     421     -15
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/6 up/down: 0/-34)             Total: -34 bytes
This commit is contained in:
Denis Vlasenko
2008-07-21 09:22:28 +00:00
parent 84c8daa11f
commit 1101d1c980
3 changed files with 24 additions and 27 deletions
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11
networking/telnetd.c
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@@ -229,11 +229,10 @@ make_new_session(
/* open the child's side of the tty. */
/* NB: setsid() disconnects from any previous ctty's. Therefore
* we must open child's side of the tty AFTER setsid! */
fd = xopen(tty_name, O_RDWR); /* becomes our ctty */
dup2(fd, 0);
dup2(fd, 1);
dup2(fd, 2);
while (fd > 2) close(fd--);
close(0);
xopen(tty_name, O_RDWR); /* becomes our ctty */
xdup2(0, 1);
xdup2(0, 2);
tcsetpgrp(0, getpid()); /* switch this tty's process group to us */
/* The pseudo-terminal allocated to the client is configured to operate in
@@ -252,7 +251,7 @@ make_new_session(
* issue files, and they may block writing to fd 1,
* (parent is supposed to read it, but parent waits
* for vforked child to exec!) */
print_login_issue(issuefile, NULL);
print_login_issue(issuefile, tty_name);
/* Exec shell / login / whatever */
login_argv[0] = loginpath;