| 4 |
|
/* |
| 5 |
|
* Routines to communicate with separate process via dual pipes |
| 6 |
|
* |
| 7 |
< |
* External symbols declared in standard.h |
| 7 |
> |
* External symbols declared in rtprocess.h |
| 8 |
|
*/ |
| 9 |
|
|
| 10 |
|
#include "copyright.h" |
| 23 |
|
|
| 24 |
|
int |
| 25 |
|
process( /* process data through pd */ |
| 26 |
< |
SUBPROC *pd, |
| 27 |
< |
char *recvbuf, char *sendbuf, |
| 28 |
< |
int nbr, int nbs |
| 26 |
> |
SUBPROC *pd, |
| 27 |
> |
char *recvbuf, char *sendbuf, |
| 28 |
> |
int nbr, int nbs |
| 29 |
|
) |
| 30 |
|
{ |
| 31 |
< |
if (nbs > PIPE_BUF) |
| 31 |
> |
if (!(pd->flags & PF_RUNNING)) |
| 32 |
|
return(-1); |
| 33 |
– |
if (!pd->running) |
| 34 |
– |
return(-1); |
| 33 |
|
if (writebuf(pd->w, sendbuf, nbs) < nbs) |
| 34 |
|
return(-1); |
| 35 |
|
return(readbuf(pd->r, recvbuf, nbr)); |
| 37 |
|
|
| 38 |
|
|
| 39 |
|
|
| 40 |
< |
int |
| 40 |
> |
ssize_t |
| 41 |
|
readbuf( /* read all of requested buffer */ |
| 42 |
< |
int fd, |
| 43 |
< |
char *bpos, |
| 44 |
< |
int siz |
| 42 |
> |
int fd, |
| 43 |
> |
char *bpos, |
| 44 |
> |
ssize_t siz |
| 45 |
|
) |
| 46 |
|
{ |
| 47 |
< |
register int cc = 0, nrem = siz; |
| 47 |
> |
ssize_t cc = 0, nrem = siz; |
| 48 |
|
retry: |
| 49 |
|
while (nrem > 0 && (cc = read(fd, bpos, nrem)) > 0) { |
| 50 |
|
bpos += cc; |
| 61 |
|
} |
| 62 |
|
|
| 63 |
|
|
| 64 |
< |
int |
| 64 |
> |
ssize_t |
| 65 |
|
writebuf( /* write all of requested buffer */ |
| 66 |
|
int fd, |
| 67 |
|
char *bpos, |
| 68 |
< |
int siz |
| 68 |
> |
ssize_t siz |
| 69 |
|
) |
| 70 |
|
{ |
| 71 |
< |
register int cc = 0, nrem = siz; |
| 71 |
> |
ssize_t cc = 0, nrem = siz; |
| 72 |
|
retry: |
| 73 |
|
while (nrem > 0 && (cc = write(fd, bpos, nrem)) > 0) { |
| 74 |
|
bpos += cc; |
