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- millert@cvs.openbsd.org 2001/03/03 21:19:41

Browse Source 
[ssh-keyscan.c]
     Dynamically allocate read_wait and its copies.  Since maxfd is
     based on resource limits it is often (usually?) larger than FD_SETSIZE.
This commit is contained in:
Ben Lindstrom 2001-03-05 07:04:38 +00:00
parent d20b855bc6
commit c1e0421cb4
2 changed files with 25 additions and 10 deletions
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6
ChangeLog
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@ -124,6 +124,10 @@
- deraadt@cvs.openbsd.org 2001/03/03 06:53:12 - deraadt@cvs.openbsd.org 2001/03/03 06:53:12
[ssh-keyscan.c] [ssh-keyscan.c]
standard theo sweep standard theo sweep
- millert@cvs.openbsd.org 2001/03/03 21:19:41
[ssh-keyscan.c]
Dynamically allocate read_wait and its copies. Since maxfd is
based on resource limits it is often (usually?) larger than FD_SETSIZE.
20010304 20010304
- (bal) Remove make-ssh-known-hosts.1 since it's no longer valid. - (bal) Remove make-ssh-known-hosts.1 since it's no longer valid.
@ -4316,4 +4320,4 @@
- Wrote replacements for strlcpy and mkdtemp - Wrote replacements for strlcpy and mkdtemp
- Released 1.0pre1 - Released 1.0pre1
$Id: ChangeLog,v 1.889 2001/03/05 07:01:18 mouring Exp $ $Id: ChangeLog,v 1.890 2001/03/05 07:04:38 mouring Exp $

29
ssh-keyscan.c
View File

@ -8,7 +8,7 @@
*/ */
#include "includes.h" #include "includes.h"
RCSID("$OpenBSD: ssh-keyscan.c,v 1.18 2001/03/03 06:53:12 deraadt Exp $"); RCSID("$OpenBSD: ssh-keyscan.c,v 1.19 2001/03/03 21:19:41 millert Exp $");
#if defined(HAVE_SYS_QUEUE_H) && !defined(HAVE_BOGUS_SYS_QUEUE_H) #if defined(HAVE_SYS_QUEUE_H) && !defined(HAVE_BOGUS_SYS_QUEUE_H)
#include <sys/queue.h> #include <sys/queue.h>
@ -45,7 +45,8 @@ extern char *__progname;
#else #else
char *__progname; char *__progname;
#endif #endif
fd_set read_wait; fd_set *read_wait;
size_t read_wait_size;
int ncon; int ncon;
/* /*
@ -361,7 +362,7 @@ conalloc(char *iname, char *oname)
gettimeofday(&fdcon[s].c_tv, NULL); gettimeofday(&fdcon[s].c_tv, NULL);
fdcon[s].c_tv.tv_sec += timeout; fdcon[s].c_tv.tv_sec += timeout;
TAILQ_INSERT_TAIL(&tq, &fdcon[s], c_link); TAILQ_INSERT_TAIL(&tq, &fdcon[s], c_link);
FD_SET(s, &read_wait); FD_SET(s, read_wait);
ncon++; ncon++;
return (s); return (s);
} }
@ -378,7 +379,7 @@ confree(int s)
xfree(fdcon[s].c_data); xfree(fdcon[s].c_data);
fdcon[s].c_status = CS_UNUSED; fdcon[s].c_status = CS_UNUSED;
TAILQ_REMOVE(&tq, &fdcon[s], c_link); TAILQ_REMOVE(&tq, &fdcon[s], c_link);
FD_CLR(s, &read_wait); FD_CLR(s, read_wait);
ncon--; ncon--;
} }
@ -481,7 +482,7 @@ conread(int s)
void void
conloop(void) conloop(void)
{ {
fd_set r, e; fd_set *r, *e;
struct timeval seltime, now; struct timeval seltime, now;
int i; int i;
con *c; con *c;
@ -501,18 +502,24 @@ conloop(void)
} else } else
seltime.tv_sec = seltime.tv_usec = 0; seltime.tv_sec = seltime.tv_usec = 0;
r = e = read_wait; r = xmalloc(read_wait_size);
while (select(maxfd, &r, NULL, &e, &seltime) == -1 && memcpy(r, read_wait, read_wait_size);
e = xmalloc(read_wait_size);
memcpy(e, read_wait, read_wait_size);
while (select(maxfd, r, NULL, e, &seltime) == -1 &&
(errno == EAGAIN || errno == EINTR)) (errno == EAGAIN || errno == EINTR))
; ;
for (i = 0; i < maxfd; i++) { for (i = 0; i < maxfd; i++) {
if (FD_ISSET(i, &e)) { if (FD_ISSET(i, e)) {
error("%s: exception!", fdcon[i].c_name); error("%s: exception!", fdcon[i].c_name);
confree(i); confree(i);
} else if (FD_ISSET(i, &r)) } else if (FD_ISSET(i, r))
conread(i); conread(i);
} }
xfree(r);
xfree(e);
c = tq.tqh_first; c = tq.tqh_first;
while (c && (c->c_tv.tv_sec < now.tv_sec || while (c && (c->c_tv.tv_sec < now.tv_sec ||
@ -612,6 +619,10 @@ main(int argc, char **argv)
fdcon = xmalloc(maxfd * sizeof(con)); fdcon = xmalloc(maxfd * sizeof(con));
memset(fdcon, 0, maxfd * sizeof(con)); memset(fdcon, 0, maxfd * sizeof(con));
read_wait_size = howmany(maxfd, NFDBITS) * sizeof(fd_mask);
read_wait = xmalloc(read_wait_size);
memset(read_wait, 0, read_wait_size);
do { do {
while (ncon < MAXCON) { while (ncon < MAXCON) {
char *name; char *name;