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select_tut.2: Clean up error checking in example program (no semantic changes) 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2009-01-24 23:34:23 +01:00
parent 2472260fff
commit 0e888d6adb
1 changed files with 9 additions and 9 deletions
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18
man2/select_tut.2
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@ -584,13 +584,13 @@ listen_socket(int listen_port)
int s;
int yes;
if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
if ((s = socket(AF_INET, SOCK_STREAM, 0)) == \-1) {
perror("socket");
return \-1;
}
yes = 1;
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
(char *) &yes, sizeof(yes)) < 0) {
(char *) &yes, sizeof(yes)) == \-1) {
perror("setsockopt");
close(s);
return \-1;
@ -598,7 +598,7 @@ listen_socket(int listen_port)
memset(&a, 0, sizeof(a));
a.sin_port = htons(listen_port);
a.sin_family = AF_INET;
if (bind(s, (struct sockaddr *) &a, sizeof(a)) < 0) {
if (bind(s, (struct sockaddr *) &a, sizeof(a)) == \-1) {
perror("bind");
close(s);
return \-1;
@ -614,7 +614,7 @@ connect_socket(int connect_port, char *address)
struct sockaddr_in a;
int s;
if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
if ((s = socket(AF_INET, SOCK_STREAM, 0)) == \-1) {
perror("socket");
close(s);
return \-1;
@ -630,7 +630,7 @@ connect_socket(int connect_port, char *address)
return \-1;
}
if (connect(s, (struct sockaddr *) &a, sizeof(a)) < 0) {
if (connect(s, (struct sockaddr *) &a, sizeof(a)) == \-1) {
perror("connect()");
shutdown(s, SHUT_RDWR);
close(s);
@ -677,7 +677,7 @@ main(int argc, char **argv)
forward_port = atoi(argv[2]);
h = listen_socket(atoi(argv[1]));
if (h < 0)
if (h == \-1)
exit(EXIT_FAILURE);
for (;;) {
@ -719,7 +719,7 @@ main(int argc, char **argv)
if (r == \-1 && errno == EINTR)
continue;
if (r < 0) {
if (r == \-1) {
perror("select()");
exit(EXIT_FAILURE);
}
@ -729,7 +729,7 @@ main(int argc, char **argv)
memset(&client_address, 0, l = sizeof(client_address));
r = accept(h, (struct sockaddr *) &client_address, &l);
if (r < 0) {
if (r == \-1) {
perror("accept()");
} else {
SHUT_FD1;
@ -738,7 +738,7 @@ main(int argc, char **argv)
buf2_avail = buf2_written = 0;
fd1 = r;
fd2 = connect_socket(forward_port, argv[3]);
if (fd2 < 0)
if (fd2 == \-1)
SHUT_FD1;
else
printf("connect from %s\\n",