47,30 → 47,20 |
#include <async.h> |
#include <sys/types.h> |
|
#define FDS 32 |
|
typedef struct stream_t { |
pwritefn_t w; |
preadfn_t r; |
void * param; |
int phone; |
} stream_t; |
|
static int console_phone = -1; |
static stream_t streams[FDS]; |
|
static ssize_t write_stderr(void *param, const void *buf, size_t count) |
ssize_t write_stderr(const void *buf, size_t count) |
{ |
return count; |
} |
|
static ssize_t read_stdin(void *param, void *buf, size_t count) |
ssize_t read_stdin(void *buf, size_t count) |
{ |
ipcarg_t r0, r1; |
size_t i = 0; |
|
while (i < count) { |
if (async_req_0_2(streams[0].phone, CONSOLE_GETCHAR, &r0, |
if (async_req_0_2(console_phone, CONSOLE_GETCHAR, &r0, |
&r1) < 0) { |
return -1; |
} |
79,21 → 69,19 |
return i; |
} |
|
static ssize_t write_stdout(void *param, const void *buf, size_t count) |
ssize_t write_stdout(const void *buf, size_t count) |
{ |
int i; |
|
for (i = 0; i < count; i++) |
async_msg_1(streams[1].phone, CONSOLE_PUTCHAR, |
async_msg_1(console_phone, CONSOLE_PUTCHAR, |
((const char *) buf)[i]); |
|
return count; |
} |
|
static stream_t open_stdin(void) |
void open_stdin(void) |
{ |
stream_t stream; |
|
if (console_phone < 0) { |
while ((console_phone = ipc_connect_me_to(PHONE_NS, |
SERVICE_CONSOLE, 0, 0)) < 0) { |
100,19 → 88,10 |
usleep(10000); |
} |
} |
|
stream.r = read_stdin; |
stream.w = NULL; |
stream.param = 0; |
stream.phone = console_phone; |
|
return stream; |
} |
|
static stream_t open_stdout(void) |
void open_stdout(void) |
{ |
stream_t stream; |
|
if (console_phone < 0) { |
while ((console_phone = ipc_connect_me_to(PHONE_NS, |
SERVICE_CONSOLE, 0, 0)) < 0) { |
119,76 → 98,12 |
usleep(10000); |
} |
} |
|
stream.r = NULL; |
stream.w = write_stdout; |
stream.phone = console_phone; |
stream.param = 0; |
|
return stream; |
} |
|
static ssize_t write_null(void *param, const void *buf, size_t count) |
int get_cons_phone(void) |
{ |
return count; |
return console_phone; |
} |
|
fd_t open(const char *fname, int flags) |
{ |
int c = 0; |
|
while (((streams[c].w) || (streams[c].r)) && (c < FDS)) |
c++; |
|
if (c == FDS) |
return EMFILE; |
|
if (!strcmp(fname, "stdin")) { |
streams[c] = open_stdin(); |
return c; |
} |
|
if (!strcmp(fname, "stdout")) { |
streams[c] = open_stdout(); |
return c; |
} |
|
if (!strcmp(fname, "stderr")) { |
streams[c].w = write_stderr; |
return c; |
} |
|
if (!strcmp(fname, "null")) { |
streams[c].w = write_null; |
return c; |
} |
|
return -1; |
} |
|
|
ssize_t write(int fd, const void *buf, size_t count) |
{ |
if (fd < FDS && streams[fd].w) |
return streams[fd].w(streams[fd].param, buf, count); |
|
return 0; |
} |
|
ssize_t read(int fd, void *buf, size_t count) |
{ |
if (fd < FDS && streams[fd].r) |
return streams[fd].r(streams[fd].param, buf, count); |
|
return 0; |
} |
|
int get_fd_phone(int fd) |
{ |
if (fd >= FDS || fd < 0) |
return -1; |
return streams[fd].phone; |
} |
|
/** @} |
*/ |