Streams support in the kernel for linux? There is a project called
'LiS' for "Linux Streams' which we use in one of our products, but no,
it is not a feature of the stock kernel. See:
ftp://ftp.gcom.com/pub/linux/src/
Some of the niceties of SVR4 are in the stock kernel/glibc, like the
'poll()' system call, which is the main thing provided by the
stropts.h header file.
-Eric.
function
Chris Fowler writes:
> Is there streams support in Linux 2.2.13.
>
> I have found streams support in the include files os stropts.h but when the
> shor program I write tests 2 devices I get the following messages:
>
> /dev/ptya0: Is not a streams device
> /dev/ttyp0: Input/Output Error
>
> I undestand the error messages and this leads me the believe their are now
> streams based pseudo ttys.
>
> ---------- Cut Here ------
> /* streams.c - Open a file and test if it has streams capability */
> /* Only one argument allowed: Name of file to test */
>
> #include
> #include
> #include
> #include
> #include
> #include
> #include
>
> int
> main(int argc, char *argv[])
> {
> /* File descriptior to test */
> int fd;
>
> /* Message for perror */
>
> /* counter for walking thrugh arguments */
> int counter = 0;
>
> /* Make sure we have at least one argument */
> if (argc < 2)
> {
> printf("usage: streams [device names to test] \n");
> exit(1);
> }
>
> for (counter = 1; counter < argc; counter++)
> {
> /* Try to open file specified */
> if ((fd = open(argv[counter],O_RDONLY)) == -1)
> {
> /* There must have been and error opening the file
> */
> fprintf(stderr,"streams: %s:
> %s\n",argv[counter],strerror(errno));
> continue;
> }
>
> /* Test to see if it supports streams */
> if ((isastream(fd)) == 0)
> printf("%s is not a streams
> device\n",argv[counter]);
> else
> printf("%s is a streams device\n",argv[counter]);
>
> }
> /* Complete. Return 0 and terminate */
> return 0;
> }
>
> -------------- Cut Here ----------------
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