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birdc died during terminal resize because of unhandled EINTR

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in select loop.
This commit is contained in:
Ondrej Zajicek 2008-11-21 12:59:03 +01:00
parent 44711e0ca2
commit e00115904f
1 changed files with 48 additions and 13 deletions
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59
client/client.c
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@ -298,11 +298,18 @@ server_read(void)
int c;
byte *start, *p;
redo:
c = read(server_fd, server_read_pos, server_read_buf + sizeof(server_read_buf) - server_read_pos);
if (!c)
die("Connection closed by server.");
if (c < 0)
{
if (errno == EINTR)
goto redo;
else
die("Server read error: %m");
}
start = server_read_buf;
p = server_read_pos;
server_read_pos += c;
@ -331,6 +338,7 @@ static fd_set select_fds;
static void
select_loop(int mode)
{
int rv;
server_reply = -1;
while (mode || server_reply < 0)
{
@ -338,7 +346,16 @@ select_loop(int mode)
FD_SET(server_fd, &select_fds);
if (mode)
FD_SET(0, &select_fds);
select(server_fd+1, &select_fds, NULL, NULL, NULL);
rv = select(server_fd+1, &select_fds, NULL, NULL, NULL);
if (rv < 0)
{
if (errno == EINTR)
continue;
else
die("select: %m");
}
if (FD_ISSET(server_fd, &select_fds))
{
server_read();
@ -351,6 +368,30 @@ select_loop(int mode)
input_reveal();
}
static void
wait_for_write(int fd)
{
while (1)
{
int rv;
fd_set set;
FD_ZERO(&set);
FD_SET(fd, &set);
rv = select(fd+1, NULL, &set, NULL, NULL);
if (rv < 0)
{
if (errno == EINTR)
continue;
else
die("select: %m");
}
if (FD_ISSET(server_fd, &set))
return;
}
}
static void
server_send(char *cmd)
{
@ -362,19 +403,13 @@ server_send(char *cmd)
while (l)
{
int cnt = write(server_fd, z, l);
if (cnt < 0)
{
if (errno == -EAGAIN)
{
fd_set set;
FD_ZERO(&set);
do
{
FD_SET(server_fd, &set);
select(server_fd+1, NULL, &set, NULL, NULL);
}
while (!FD_ISSET(server_fd, &set));
}
if (errno == EAGAIN)
wait_for_write(server_fd);
else if (errno == EINTR)
continue;
else
die("Server write error: %m");
}