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openssh-portable
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- (djm) [atomicio.c channels.c clientloop.c defines.h includes.h] 

[packet.c scp.c serverloop.c sftp-client.c ssh-agent.c ssh-keyscan.c]
   [sshd.c] Explicitly handle EWOULDBLOCK wherever we handle EAGAIN, on
   some platforms (HP nonstop) it is a distinct errno;
   bz#1467 reported by sconeu AT yahoo.com; ok dtucker@
This commit is contained in:
Damien Miller 2008-07-04 23:10:49 +10:00
parent b01bac109b
commit d8968adb5f
13 changed files with 57 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
ChangeLog
View File

@ -30,7 +30,12 @@
explicitly disable conch options that could interfere with the test
- (dtucker) [sftp-server.c] Bug #1447: fall back to racy rename if link
returns EXDEV. Patch from Mike Garrison, ok djm@
h
- (djm) [atomicio.c channels.c clientloop.c defines.h includes.h]
[packet.c scp.c serverloop.c sftp-client.c ssh-agent.c ssh-keyscan.c]
[sshd.c] Explicitly handle EWOULDBLOCK wherever we handle EAGAIN, on
some platforms (HP nonstop) it is a distinct errno;
bz#1467 reported by sconeu AT yahoo.com; ok dtucker@
20080702
- (dtucker) OpenBSD CVS Sync
- djm@cvs.openbsd.org 2008/06/30 08:05:59
@ -4565,4 +4570,4 @@ h
OpenServer 6 and add osr5bigcrypt support so when someone migrates
passwords between UnixWare and OpenServer they will still work. OK dtucker@
$Id: ChangeLog,v 1.5057 2008/07/04 07:11:30 dtucker Exp $
$Id: ChangeLog,v 1.5058 2008/07/04 13:10:49 djm Exp $

8
atomicio.c
View File

@ -63,11 +63,7 @@ atomicio(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n)
case -1:
if (errno == EINTR)
continue;
#ifdef EWOULDBLOCK
if (errno == EAGAIN || errno == EWOULDBLOCK) {
#else
if (errno == EAGAIN) {
#endif
(void)poll(&pfd, 1, -1);
continue;
}
@ -109,11 +105,7 @@ atomiciov(ssize_t (*f) (int, const struct iovec *, int), int fd,
case -1:
if (errno == EINTR)
continue;
#ifdef EWOULDBLOCK
if (errno == EAGAIN || errno == EWOULDBLOCK) {
#else
if (errno == EAGAIN) {
#endif
(void)poll(&pfd, 1, -1);
continue;
}

19
channels.c
View File

@ -1494,7 +1494,8 @@ channel_handle_rfd(Channel *c, fd_set *readset, fd_set *writeset)
if (c->rfd != -1 && (force || FD_ISSET(c->rfd, readset))) {
errno = 0;
len = read(c->rfd, buf, sizeof(buf));
if (len < 0 && (errno == EINTR || (errno == EAGAIN && !force)))
if (len < 0 && (errno == EINTR ||
((errno == EAGAIN || errno == EWOULDBLOCK) && !force)))
return 1;
#ifndef PTY_ZEROREAD
if (len <= 0) {
@ -1565,7 +1566,8 @@ channel_handle_wfd(Channel *c, fd_set *readset, fd_set *writeset)
c->local_consumed += dlen + 4;
len = write(c->wfd, buf, dlen);
xfree(data);
if (len < 0 && (errno == EINTR || errno == EAGAIN))
if (len < 0 && (errno == EINTR || errno == EAGAIN ||
errno == EWOULDBLOCK))
return 1;
if (len <= 0) {
if (c->type != SSH_CHANNEL_OPEN)
@ -1583,7 +1585,8 @@ channel_handle_wfd(Channel *c, fd_set *readset, fd_set *writeset)
#endif
len = write(c->wfd, buf, dlen);
if (len < 0 && (errno == EINTR || errno == EAGAIN))
if (len < 0 &&
(errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK))
return 1;
if (len <= 0) {
if (c->type != SSH_CHANNEL_OPEN) {
@ -1635,7 +1638,8 @@ channel_handle_efd(Channel *c, fd_set *readset, fd_set *writeset)
buffer_len(&c->extended));
debug2("channel %d: written %d to efd %d",
c->self, len, c->efd);
if (len < 0 && (errno == EINTR || errno == EAGAIN))
if (len < 0 && (errno == EINTR || errno == EAGAIN ||
errno == EWOULDBLOCK))
return 1;
if (len <= 0) {
debug2("channel %d: closing write-efd %d",
@ -1650,8 +1654,8 @@ channel_handle_efd(Channel *c, fd_set *readset, fd_set *writeset)
len = read(c->efd, buf, sizeof(buf));
debug2("channel %d: read %d from efd %d",
c->self, len, c->efd);
if (len < 0 && (errno == EINTR ||
(errno == EAGAIN && !c->detach_close)))
if (len < 0 && (errno == EINTR || ((errno == EAGAIN ||
errno == EWOULDBLOCK) && !c->detach_close)))
return 1;
if (len <= 0) {
debug2("channel %d: closing read-efd %d",
@ -1675,7 +1679,8 @@ channel_handle_ctl(Channel *c, fd_set *readset, fd_set *writeset)
/* Monitor control fd to detect if the slave client exits */
if (c->ctl_fd != -1 && FD_ISSET(c->ctl_fd, readset)) {
len = read(c->ctl_fd, buf, sizeof(buf));
if (len < 0 && (errno == EINTR || errno == EAGAIN))
if (len < 0 &&
(errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK))
return 1;
if (len <= 0) {
debug2("channel %d: ctl read<=0", c->self);

12
clientloop.c
View File

@ -663,7 +663,8 @@ client_process_net_input(fd_set *readset)
* There is a kernel bug on Solaris that causes select to
* sometimes wake up even though there is no data available.
*/
if (len < 0 && (errno == EAGAIN || errno == EINTR))
if (len < 0 &&
(errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK))
len = 0;
if (len < 0) {
@ -1129,7 +1130,8 @@ client_process_input(fd_set *readset)
if (FD_ISSET(fileno(stdin), readset)) {
/* Read as much as possible. */
len = read(fileno(stdin), buf, sizeof(buf));
if (len < 0 && (errno == EAGAIN || errno == EINTR))
if (len < 0 &&
(errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK))
return; /* we'll try again later */
if (len <= 0) {
/*
@ -1186,7 +1188,8 @@ client_process_output(fd_set *writeset)
len = write(fileno(stdout), buffer_ptr(&stdout_buffer),
buffer_len(&stdout_buffer));
if (len <= 0) {
if (errno == EINTR || errno == EAGAIN)
if (errno == EINTR || errno == EAGAIN ||
errno == EWOULDBLOCK)
len = 0;
else {
/*
@ -1210,7 +1213,8 @@ client_process_output(fd_set *writeset)
len = write(fileno(stderr), buffer_ptr(&stderr_buffer),
buffer_len(&stderr_buffer));
if (len <= 0) {
if (errno == EINTR || errno == EAGAIN)
if (errno == EINTR || errno == EAGAIN ||
errno == EWOULDBLOCK)
len = 0;
else {
/*

6
defines.h
View File

@ -25,7 +25,7 @@
#ifndef _DEFINES_H
#define _DEFINES_H
/* $Id: defines.h,v 1.150 2008/06/13 00:28:57 dtucker Exp $ */
/* $Id: defines.h,v 1.151 2008/07/04 13:10:49 djm Exp $ */
/* Constants */
@ -734,4 +734,8 @@ struct winsize {
# endif
#endif
#ifndef EWOULDBLOCK
# define EWOULDBLOCK EAGAIN
#endif
#endif /* _DEFINES_H */

2
includes.h
View File

@ -149,6 +149,8 @@
# include <sys/syslog.h>
#endif
#include <errno.h>
/*
* On HP-UX 11.11, shadow.h and prot.h provide conflicting declarations
* of getspnam when _INCLUDE__STDC__ is defined, so we unset it here.

8
packet.c
View File

@ -956,7 +956,8 @@ packet_read_seqnr(u_int32_t *seqnr_p)
if ((ret = select(connection_in + 1, setp, NULL,
NULL, timeoutp)) >= 0)
break;
if (errno != EAGAIN && errno != EINTR)
if (errno != EAGAIN && errno != EINTR &&
errno != EWOULDBLOCK)
break;
if (packet_timeout_ms == -1)
continue;
@ -1475,7 +1476,7 @@ packet_write_poll(void)
if (len > 0) {
len = write(connection_out, buffer_ptr(&output), len);
if (len <= 0) {
if (errno == EAGAIN)
if (errno == EAGAIN || errno == EWOULDBLOCK)
return;
else
fatal("Write failed: %.100s", strerror(errno));
@ -1516,7 +1517,8 @@ packet_write_wait(void)
if ((ret = select(connection_out + 1, NULL, setp,
NULL, timeoutp)) >= 0)
break;
if (errno != EAGAIN && errno != EINTR)
if (errno != EAGAIN && errno != EINTR &&
errno != EWOULDBLOCK)
break;
if (packet_timeout_ms == -1)
continue;

2
scp.c
View File

@ -474,7 +474,7 @@ scpio(ssize_t (*f)(int, void *, size_t), int fd, void *_p, size_t l, off_t *c)
if (r < 0) {
if (errno == EINTR)
continue;
if (errno == EAGAIN) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
(void)poll(&pfd, 1, -1); /* Ignore errors */
continue;
}

14
serverloop.c
View File

@ -400,7 +400,8 @@ process_input(fd_set *readset)
return;
cleanup_exit(255);
} else if (len < 0) {
if (errno != EINTR && errno != EAGAIN) {
if (errno != EINTR && errno != EAGAIN &&
errno != EWOULDBLOCK) {
verbose("Read error from remote host "
"%.100s: %.100s",
get_remote_ipaddr(), strerror(errno));
@ -418,8 +419,8 @@ process_input(fd_set *readset)
if (!fdout_eof && FD_ISSET(fdout, readset)) {
errno = 0;
len = read(fdout, buf, sizeof(buf));
if (len < 0 && (errno == EINTR ||
(errno == EAGAIN && !child_terminated))) {
if (len < 0 && (errno == EINTR || ((errno == EAGAIN ||
errno == EWOULDBLOCK) && !child_terminated))) {
/* do nothing */
#ifndef PTY_ZEROREAD
} else if (len <= 0) {
@ -437,8 +438,8 @@ process_input(fd_set *readset)
if (!fderr_eof && FD_ISSET(fderr, readset)) {
errno = 0;
len = read(fderr, buf, sizeof(buf));
if (len < 0 && (errno == EINTR ||
(errno == EAGAIN && !child_terminated))) {
if (len < 0 && (errno == EINTR || ((errno == EAGAIN ||
errno == EWOULDBLOCK) && !child_terminated))) {
/* do nothing */
#ifndef PTY_ZEROREAD
} else if (len <= 0) {
@ -469,7 +470,8 @@ process_output(fd_set *writeset)
data = buffer_ptr(&stdin_buffer);
dlen = buffer_len(&stdin_buffer);
len = write(fdin, data, dlen);
if (len < 0 && (errno == EINTR || errno == EAGAIN)) {
if (len < 0 &&
(errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)) {
/* do nothing */
} else if (len <= 0) {
if (fdin != fdout)

3
sftp-client.c
View File

@ -1223,7 +1223,8 @@ do_upload(struct sftp_conn *conn, char *local_path, char *remote_path,
len = 0;
else do
len = read(local_fd, data, conn->transfer_buflen);
while ((len == -1) && (errno == EINTR || errno == EAGAIN));
while ((len == -1) &&
(errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
if (len == -1)
fatal("Couldn't read from \"%s\": %s", local_path,

6
ssh-agent.c
View File

@ -961,7 +961,8 @@ after_select(fd_set *readset, fd_set *writeset)
buffer_ptr(&sockets[i].output),
buffer_len(&sockets[i].output));
if (len == -1 && (errno == EAGAIN ||
errno == EINTR))
errno == EINTR ||
errno == EWOULDBLOCK))
continue;
break;
} while (1);
@ -975,7 +976,8 @@ after_select(fd_set *readset, fd_set *writeset)
do {
len = read(sockets[i].fd, buf, sizeof(buf));
if (len == -1 && (errno == EAGAIN ||
errno == EINTR))
errno == EINTR ||
errno == EWOULDBLOCK))
continue;
break;
} while (1);

2
ssh-keyscan.c
View File

@ -656,7 +656,7 @@ conloop(void)
memcpy(e, read_wait, read_wait_nfdset * sizeof(fd_mask));
while (select(maxfd, r, NULL, e, &seltime) == -1 &&
(errno == EAGAIN || errno == EINTR))
(errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK))
;
for (i = 0; i < maxfd; i++) {

3
sshd.c
View File

@ -1096,7 +1096,8 @@ server_accept_loop(int *sock_in, int *sock_out, int *newsock, int *config_s)
*newsock = accept(listen_socks[i],
(struct sockaddr *)&from, &fromlen);
if (*newsock < 0) {
if (errno != EINTR && errno != EWOULDBLOCK)
if (errno != EINTR && errno != EAGAIN &&
errno != EWOULDBLOCK)
error("accept: %.100s", strerror(errno));
continue;
}