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remote_bitbang: Add Windows support 

Windows socket descriptor is not file descriptor, so when
using remote_bitbang on Windows, it fails with "fdopen:
failed to open write stream".

This patch removes the file write stream, replaces it
with socket write calls.

Change-Id: Ifd7c8a4139a5ac51ecd2846835a7a947a90fe16c
Signed-off-by: Yun Liu <liuyun.97@gmail.com>
Reviewed-on: http://openocd.zylin.com/6096
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Yun Liu 2021-03-12 15:07:13 +08:00 committed by Tomas Vanek
parent 29af904043
commit 7dd323b26d
1 changed files with 19 additions and 36 deletions
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55
src/jtag/drivers/remote_bitbang.c
View File

@ -33,7 +33,6 @@
static char *remote_bitbang_host;
static char *remote_bitbang_port;
static FILE *remote_bitbang_file;
static int remote_bitbang_fd;
/* Circular buffer. When start == end, the buffer is empty. */
@ -63,7 +62,7 @@ static int remote_bitbang_fill_buf(void)
contiguous_available_space = remote_bitbang_start -
remote_bitbang_end - 1;
}
ssize_t count = read(remote_bitbang_fd,
ssize_t count = read_socket(remote_bitbang_fd,
remote_bitbang_buf + remote_bitbang_end,
contiguous_available_space);
if (count > 0) {
@ -73,11 +72,14 @@ static int remote_bitbang_fill_buf(void)
} else if (count == 0) {
return ERROR_OK;
} else if (count < 0) {
#ifdef _WIN32
if (WSAGetLastError() == WSAEWOULDBLOCK) {
#else
if (errno == EAGAIN) {
#endif
return ERROR_OK;
} else {
LOG_ERROR("remote_bitbang_fill_buf: %s (%d)",
strerror(errno), errno);
log_socket_error("remote_bitbang_fill_buf");
return ERROR_FAIL;
}
}
@ -88,8 +90,10 @@ static int remote_bitbang_fill_buf(void)
static int remote_bitbang_putc(int c)
{
if (EOF == fputc(c, remote_bitbang_file)) {
LOG_ERROR("remote_bitbang_putc: %s", strerror(errno));
char buf = c;
ssize_t count = write_socket(remote_bitbang_fd, &buf, sizeof(buf));
if (count < 0) {
log_socket_error("remote_bitbang_putc");
return ERROR_FAIL;
}
return ERROR_OK;
@ -97,20 +101,11 @@ static int remote_bitbang_putc(int c)
static int remote_bitbang_quit(void)
{
if (EOF == fputc('Q', remote_bitbang_file)) {
LOG_ERROR("fputs: %s", strerror(errno));
if (remote_bitbang_putc('Q') == ERROR_FAIL)
return ERROR_FAIL;
}
if (EOF == fflush(remote_bitbang_file)) {
LOG_ERROR("fflush: %s", strerror(errno));
return ERROR_FAIL;
}
/* We only need to close one of the FILE*s, because they both use the same */
/* underlying file descriptor. */
if (EOF == fclose(remote_bitbang_file)) {
LOG_ERROR("fclose: %s", strerror(errno));
if (close_socket(remote_bitbang_fd) != 0) {
log_socket_error("close_socket");
return ERROR_FAIL;
}
@ -138,21 +133,16 @@ static bb_value_t char_to_int(int c)
/* Get the next read response. */
static bb_value_t remote_bitbang_rread(void)
{
if (EOF == fflush(remote_bitbang_file)) {
remote_bitbang_quit();
LOG_ERROR("fflush: %s", strerror(errno));
return BB_ERROR;
}
/* Enable blocking access. */
socket_block(remote_bitbang_fd);
char c;
ssize_t count = read(remote_bitbang_fd, &c, 1);
ssize_t count = read_socket(remote_bitbang_fd, &c, 1);
if (count == 1) {
return char_to_int(c);
} else {
remote_bitbang_quit();
LOG_ERROR("read: count=%d, error=%s", (int) count, strerror(errno));
LOG_ERROR("read_socket: count=%d", (int) count);
log_socket_error("read_socket");
return BB_ERROR;
}
}
@ -238,7 +228,7 @@ static int remote_bitbang_init_tcp(void)
freeaddrinfo(result); /* No longer needed */
if (rp == NULL) { /* No address succeeded */
LOG_ERROR("Failed to connect: %s", strerror(errno));
log_socket_error("Failed to connect");
return ERROR_FAIL;
}
@ -255,7 +245,7 @@ static int remote_bitbang_init_unix(void)
LOG_INFO("Connecting to unix socket %s", remote_bitbang_host);
int fd = socket(PF_UNIX, SOCK_STREAM, 0);
if (fd < 0) {
LOG_ERROR("socket: %s", strerror(errno));
log_socket_error("socket");
return ERROR_FAIL;
}
@ -265,7 +255,7 @@ static int remote_bitbang_init_unix(void)
addr.sun_path[sizeof(addr.sun_path)-1] = '\0';
if (connect(fd, (struct sockaddr *)&addr, sizeof(struct sockaddr_un)) < 0) {
LOG_ERROR("connect: %s", strerror(errno));
log_socket_error("connect");
return ERROR_FAIL;
}
@ -288,13 +278,6 @@ static int remote_bitbang_init(void)
if (remote_bitbang_fd < 0)
return remote_bitbang_fd;
remote_bitbang_file = fdopen(remote_bitbang_fd, "w+");
if (remote_bitbang_file == NULL) {
LOG_ERROR("fdopen: failed to open write stream");
close(remote_bitbang_fd);
return ERROR_FAIL;
}
LOG_INFO("remote_bitbang driver initialized");
return ERROR_OK;
}