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Add missing return value checks

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Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
This commit is contained in:
Yegor Yefremov
2018-09-18 13:43:29 +02:00
parent 0ff988eeef
commit 1ce4dc7b39
5 changed files with 58 additions and 17 deletions
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slcan_attach.c
+24 -6
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@@ -157,25 +157,40 @@ int main(int argc, char **argv)
if (speed) {
sprintf(buf, "C\rS%s\r", speed);
write(fd, buf, strlen(buf));
if (write(fd, buf, strlen(buf)) <= 0) {
perror("write");
exit(EXIT_FAILURE);
}
}
if (btr) {
sprintf(buf, "C\rs%s\r", btr);
write(fd, buf, strlen(buf));
if (write(fd, buf, strlen(buf)) <= 0) {
perror("write");
exit(EXIT_FAILURE);
}
}
if (send_read_status_flags) {
sprintf(buf, "F\r");
write(fd, buf, strlen(buf));
if (write(fd, buf, strlen(buf)) <= 0) {
perror("write");
exit(EXIT_FAILURE);
}
}
if (send_listen) {
sprintf(buf, "L\r");
write(fd, buf, strlen(buf));
if (write(fd, buf, strlen(buf)) <= 0) {
perror("write");
exit(EXIT_FAILURE);
}
} else if (send_open) {
sprintf(buf, "O\r");
write(fd, buf, strlen(buf));
if (write(fd, buf, strlen(buf)) <= 0) {
perror("write");
exit(EXIT_FAILURE);
}
}
/* set slcan line discipline on given tty */
@@ -229,7 +244,10 @@ int main(int argc, char **argv)
if (send_close) {
sprintf(buf, "C\r");
write(fd, buf, strlen(buf));
if (write(fd, buf, strlen(buf)) <= 0) {
perror("write");
exit(EXIT_FAILURE);
}
}
}