RTOS/rtems
1
0
Fork 0
forked from Imagelibrary/rtems
Code Pull Requests Activity

Patch from Eric Norum <eric@skatter.usask.ca> to eliminate external

Browse Source 
IO handlers scheme that was implemented originally just to support
sockets.  The file system IO switch is more general and works fine.
This commit is contained in:
Joel Sherrill
1999-03-01 22:40:08 +00:00
parent e069cdc3f1
commit 73f6236bc0
68 changed files with 218 additions and 887 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
c/src/lib/libc/libio.c
View File

@@ -49,44 +49,12 @@ rtems_libio_t *rtems_libio_iops;
rtems_libio_t *rtems_libio_last_iop;
rtems_libio_t *rtems_libio_iop_freelist;
/*
* External I/O Handlers Table
*
* Space for all possible handlers is preallocated
* to speed up dispatch to external handlers.
*/
rtems_libio_handler_t rtems_libio_handlers[15];
/*
* Default mode for all files.
*/
mode_t rtems_filesystem_umask;
/*
* rtems_register_libio_handler
*
* This function registers an external IO handler set. This lets
* other subsystems have their own versions of many of the system
* calls. For example, the networking code registers handlers which
* map the system calls for read() and write() to socket calls.
*
*/
void rtems_register_libio_handler(
int handler_flag,
const rtems_libio_handler_t *handler
)
{
int handler_index = (handler_flag >> LIBIO_FLAGS_HANDLER_SHIFT) - 1;
if ((handler_index < 0) || (handler_index >= 15))
rtems_fatal_error_occurred( RTEMS_INVALID_NUMBER );
rtems_libio_handlers[handler_index] = *handler;
}
/*
* rtems_libio_init
*