int group_setupstreams(FAR struct task_tcb_s *tcb)
{
DEBUGASSERT(tcb && tcb->cmn.group);
/* Initialize file streams for the task group */
lib_stream_initialize(tcb->cmn.group);
/* fdopen to get the stdin, stdout and stderr streams. The following logic
* depends on the fact that the library layer will allocate FILEs in order.
*
* fd = 0 is stdin (read-only)
* fd = 1 is stdout (write-only, append)
* fd = 2 is stderr (write-only, append)
*/
(void)fs_fdopen(0, O_RDONLY, (FAR struct tcb_s *)tcb);
(void)fs_fdopen(1, O_WROK | O_CREAT, (FAR struct tcb_s *)tcb);
(void)fs_fdopen(2, O_WROK | O_CREAT, (FAR struct tcb_s *)tcb);
return OK;
}
int sched_setupstreams(FAR _TCB *tcb)
{
/* Allocate file strems for the TCB */
tcb->streams = lib_alloclist();
if (tcb->streams)
{
/* fdopen to get the stdin, stdout and stderr streams.
* The following logic depends on the fact that the library
* layer will allocate FILEs in order.
*
* fd = 0 is stdin (read-only)
* fd = 1 is stdout (write-only, append)
* fd = 2 is stderr (write-only, append)
*/
(void)fs_fdopen(0, O_RDONLY, tcb);
(void)fs_fdopen(1, O_WROK|O_CREAT, tcb);
(void)fs_fdopen(2, O_WROK|O_CREAT, tcb);
}
return OK;
}
FAR FILE *fdopen(int fd, FAR const char *mode)
{
FAR FILE *ret = NULL;
int oflags;
/* Map the open mode string to open flags */
oflags = lib_mode2oflags(mode);
if (oflags >= 0)
{
ret = fs_fdopen(fd, oflags, NULL);
}
return ret;
}
FAR FILE *fopen(FAR const char *path, FAR const char *mode)
{
FAR FILE *ret = NULL;
int oflags;
int fd;
/* Map the open mode string to open flags */
oflags = lib_mode2oflags(mode);
if (oflags < 0)
{
return NULL;
}
/* Open the file */
fd = open(path, oflags, 0666);
/* If the open was successful, then fdopen() the fil using the file
* desciptor returned by open. If open failed, then just return the
* NULL stream -- open() has already set the errno.
*/
if (fd >= 0)
{
ret = fs_fdopen(fd, oflags, NULL);
if (!ret)
{
/* Don't forget to close the file descriptor if any other
* failures are reported by fdopen().
*/
(void)close(fd);
}
}
return ret;
}
