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Add poll() and select() support for Termios

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This commit is contained in:
Sebastian Huber
2017-02-21 15:26:31 +01:00
parent 631fb983aa
commit 045ff6e11c
5 changed files with 416 additions and 3 deletions
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121
testsuite/netshell01/test_main.c
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@@ -29,16 +29,131 @@
* that the target is alive after initializing the TCP/IP stack.
*/
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <rtems/shell.h>
#define TEST_NAME "LIBBSD NETSHELL 1"
static void
change_serial_settings(int fd, const struct termios *current, bool icanon)
{
struct termios term = *current;
term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR |
ICRNL | IXON);
term.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL | ECHOPRT | ECHOCTL |
ECHOKE | ICANON | ISIG | IEXTEN);
term.c_cflag &= ~(CSIZE | PARENB);
term.c_cflag |= CS8;
term.c_oflag &= ~(OPOST | ONLRET | ONLCR | OCRNL | ONLRET | TABDLY |
OLCUC);
term.c_cc[VMIN] = 0;
term.c_cc[VTIME] = 10;
if (icanon) {
term.c_iflag |= ICRNL;
term.c_lflag |= ICANON;
}
tcsetattr(fd, TCSANOW, &term);
}
static void
do_read_select(int fd)
{
int nfds = fd + 1;
struct fd_set read_set;
struct timeval timeout = {
.tv_sec = 10,
.tv_usec = 0
};
int rv;
FD_ZERO(&read_set);
FD_SET(fd, &read_set);
rv = select(nfds, &read_set, NULL, NULL, &timeout);
if (rv == 0) {
printf("timeout\n");
} else if (rv > 0) {
if (FD_ISSET(fd, &read_set)) {
char buf[512];
ssize_t n = read(fd, buf, sizeof(buf));
printf("read returned %zi\n", n);
}
} else {
perror("select failed");
}
}
static void
do_write_select(int fd)
{
int nfds = fd + 1;
struct fd_set write_set;
struct timeval to = {
.tv_sec = 0,
.tv_usec = 1
};
struct timeval *timeout = &to;
char buf[512];
int rv;
size_t i;
memset(buf, 'a', sizeof(buf));
for (i = 0; i < sizeof(buf); i += 24) {
buf[i] = '\r';
buf[i + 1] = '\n';
}
for (i = 0; i < 10; ++i) {
write(fd, buf, sizeof(buf));
FD_ZERO(&write_set);
FD_SET(fd, &write_set);
rv = select(nfds, NULL, &write_set, NULL, timeout);
if (rv == 0) {
printf("timeout\n");
} else {
printf("write set: %i\n", FD_ISSET(fd, &write_set));
}
timeout = NULL;
}
}
static int
termiosselect_command(int argc, char *argv[])
{
bool icanon = argc > 1 && strcmp(argv[1], "icanon") == 0;
int fd = STDIN_FILENO;
struct termios term;
int rv = tcgetattr(fd, &term);
assert(rv == 0);
change_serial_settings(fd, &term, icanon);
do_read_select(fd);
do_write_select(STDOUT_FILENO);
tcsetattr(fd, TCSANOW, &term);
return (0);
}
rtems_shell_cmd_t rtems_shell_ARP_Command = {
.name = "termiosselect",
.usage = "termiosselect [icanon]",
.topic = "net",
.command = termiosselect_command
};
static void
test_main(void)
{
@@ -50,4 +165,6 @@ test_main(void)
exit(0);
}
#define RTEMS_BSD_CONFIG_TERMIOS_KQUEUE_AND_POLL
#include <rtems/bsd/test/default-init.h>