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Check for FD_SET overrun.

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This commit is contained in:
Jacques Vidrine 2002-09-09 16:14:03 +00:00
parent 012b8a4111
commit 75bed0534a
1 changed files with 4 additions and 0 deletions
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4
usr.bin/rsh/rsh.c
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@ -367,6 +367,8 @@ reread: errno = 0;
bp = buf;
rewrite:
if (rem >= FD_SETSIZE)
errx(1, "descriptor too big");
FD_ZERO(&rembits);
FD_SET(rem, &rembits);
nfds = rem + 1;
@ -404,6 +406,8 @@ done:
tvtimeout.tv_usec = 0;
(void)sigsetmask(omask);
if (rfd2 >= FD_SETSIZE || rem >= FD_SETSIZE)
errx(1, "descriptor too big");
FD_ZERO(&readfrom);
FD_SET(rfd2, &readfrom);
FD_SET(rem, &readfrom);