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Use SIGUSR1 to propogate SIGURG to the child; security measures prevent

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the parent from sending SIGURG itself to the child.  This fixes the
 problem of occasionally failing to pass the window size.
This commit is contained in:
Bill Fenner 2002-02-27 22:45:10 +00:00
parent 57c1a0b6bf
commit 1f5e29c956
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=91434
1 changed files with 3 additions and 2 deletions
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5
usr.bin/rlogin/rlogin.c
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@ -773,6 +773,7 @@ reader(omask)
#endif
(void)signal(SIGTTOU, SIG_IGN);
(void)signal(SIGURG, oob);
(void)signal(SIGUSR1, oob); /* When propogating SIGURG from parent */
ppid = getppid();
(void)fcntl(rem, F_SETOWN, pid);
(void)setjmp(rcvtop);
@ -864,12 +865,12 @@ lostpeer(signo)
done(1);
}
/* copy SIGURGs to the child process. */
/* copy SIGURGs to the child process via SIGUSR1. */
void
copytochild(signo)
int signo;
{
(void)kill(child, SIGURG);
(void)kill(child, SIGUSR1);
}
void