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-rw-r--r--c/src/exec/libcsupport/src/libio.c335
1 files changed, 0 insertions, 335 deletions
diff --git a/c/src/exec/libcsupport/src/libio.c b/c/src/exec/libcsupport/src/libio.c
deleted file mode 100644
index 713ba6dd33..0000000000
--- a/c/src/exec/libcsupport/src/libio.c
+++ /dev/null
@@ -1,335 +0,0 @@
-/*
- * This file contains the support infrastructure used to manage the
- * table of integer style file descriptors used by the low level
- * POSIX system calls like open(), read, fstat(), etc.
- *
- * COPYRIGHT (c) 1989-1999.
- * On-Line Applications Research Corporation (OAR).
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.OARcorp.com/rtems/license.html.
- *
- * $Id$
- */
-
-#if HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <rtems/libio_.h> /* libio_.h pulls in rtems */
-#include <rtems.h>
-#include <rtems/assoc.h> /* assoc.h not included by rtems.h */
-
-#include <stdio.h> /* O_RDONLY, et.al. */
-#include <fcntl.h> /* O_RDONLY, et.al. */
-#include <assert.h>
-#include <errno.h>
-
-#if ! defined(O_NDELAY)
-# if defined(solaris2)
-# define O_NDELAY O_NONBLOCK
-# elif defined(__CYGWIN__)
-# define O_NDELAY _FNBIO
-# elif defined(RTEMS_NEWLIB)
-# define O_NDELAY _FNBIO
-# endif
-#endif
-
-
-#include <errno.h>
-#include <string.h> /* strcmp */
-#include <unistd.h>
-#include <stdlib.h> /* calloc() */
-
-#include <rtems/libio.h> /* libio.h not pulled in by rtems */
-
-/*
- * File descriptor Table Information
- */
-
-extern unsigned32 rtems_libio_number_iops;
-rtems_id rtems_libio_semaphore;
-rtems_libio_t *rtems_libio_iops;
-rtems_libio_t *rtems_libio_iop_freelist;
-
-/*
- * rtems_libio_init
- *
- * Called by BSP startup code to initialize the libio subsystem.
- */
-
-void rtems_libio_init( void )
-{
- rtems_status_code rc;
- int i;
- rtems_libio_t *iop;
-
- if (rtems_libio_number_iops > 0)
- {
- rtems_libio_iops = (rtems_libio_t *) calloc(rtems_libio_number_iops,
- sizeof(rtems_libio_t));
- if (rtems_libio_iops == NULL)
- rtems_fatal_error_occurred(RTEMS_NO_MEMORY);
-
- iop = rtems_libio_iop_freelist = rtems_libio_iops;
- for (i = 0 ; i < (rtems_libio_number_iops - 1) ; i++, iop++)
- iop->data1 = iop + 1;
- iop->data1 = NULL;
- }
-
- /*
- * Create the binary semaphore used to provide mutual exclusion
- * on the IOP Table.
- */
-
- rc = rtems_semaphore_create(
- RTEMS_LIBIO_SEM,
- 1,
- RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
- RTEMS_NO_PRIORITY,
- &rtems_libio_semaphore
- );
- if ( rc != RTEMS_SUCCESSFUL )
- rtems_fatal_error_occurred( rc );
-
- /*
- * Initialize the base file system infrastructure.
- */
-
- rtems_filesystem_initialize();
-}
-
-/*
- * rtems_libio_fcntl_flags
- *
- * Convert UNIX fnctl(2) flags to ones that RTEMS drivers understand
- */
-
-rtems_assoc_t access_modes_assoc[] = {
- { "READ", LIBIO_FLAGS_READ, O_RDONLY },
- { "WRITE", LIBIO_FLAGS_WRITE, O_WRONLY },
- { "READ/WRITE", LIBIO_FLAGS_READ_WRITE, O_RDWR },
- { 0, 0, 0 },
-};
-
-rtems_assoc_t status_flags_assoc[] = {
- { "NO DELAY", LIBIO_FLAGS_NO_DELAY, O_NDELAY },
- { "NONBLOCK", LIBIO_FLAGS_NO_DELAY, O_NONBLOCK },
- { "APPEND", LIBIO_FLAGS_APPEND, O_APPEND },
- { "CREATE", LIBIO_FLAGS_CREATE, O_CREAT },
- { 0, 0, 0 },
-};
-
-unsigned32 rtems_libio_fcntl_flags(
- unsigned32 fcntl_flags
-)
-{
- unsigned32 flags = 0;
- unsigned32 access_modes;
-
- /*
- * Access mode is a small integer
- */
-
- access_modes = fcntl_flags & O_ACCMODE;
- fcntl_flags &= ~O_ACCMODE;
- flags = rtems_assoc_local_by_remote( access_modes_assoc, access_modes );
-
- /*
- * Everything else is single bits
- */
-
- flags |=
- rtems_assoc_local_by_remote_bitfield(status_flags_assoc, fcntl_flags);
- return flags;
-}
-
-/*
- * rtems_libio_to_fcntl_flags
- *
- * Convert RTEMS internal flags to UNIX fnctl(2) flags
- */
-
-unsigned32 rtems_libio_to_fcntl_flags(
- unsigned32 flags
-)
-{
- unsigned32 fcntl_flags = 0;
-
- if ( (flags & LIBIO_FLAGS_READ_WRITE) == LIBIO_FLAGS_READ_WRITE ) {
- fcntl_flags |= O_RDWR;
- } else if ( (flags & LIBIO_FLAGS_READ) == LIBIO_FLAGS_READ) {
- fcntl_flags |= O_RDONLY;
- } else if ( (flags & LIBIO_FLAGS_WRITE) == LIBIO_FLAGS_WRITE) {
- fcntl_flags |= O_WRONLY;
- }
-
- if ( (flags & LIBIO_FLAGS_NO_DELAY) == LIBIO_FLAGS_NO_DELAY ) {
- fcntl_flags |= O_NDELAY;
- }
-
- if ( (flags & LIBIO_FLAGS_APPEND) == LIBIO_FLAGS_APPEND ) {
- fcntl_flags |= O_APPEND;
- }
-
- if ( (flags & LIBIO_FLAGS_CREATE) == LIBIO_FLAGS_CREATE ) {
- fcntl_flags |= O_CREAT;
- }
-
- return fcntl_flags;
-}
-
-/*
- * rtems_libio_allocate
- *
- * This routine searches the IOP Table for an unused entry. If it
- * finds one, it returns it. Otherwise, it returns NULL.
- */
-
-rtems_libio_t *rtems_libio_allocate( void )
-{
- rtems_libio_t *iop, *next;
- rtems_status_code rc;
-
- rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
-
- if (rtems_libio_iop_freelist) {
- iop = rtems_libio_iop_freelist;
- next = iop->data1;
- (void) memset( iop, 0, sizeof(rtems_libio_t) );
- iop->flags = LIBIO_FLAGS_OPEN;
- rc = rtems_semaphore_create(
- RTEMS_LIBIO_IOP_SEM(iop - rtems_libio_iops),
- 1,
- RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
- RTEMS_NO_PRIORITY,
- &iop->sem
- );
- if (rc != RTEMS_SUCCESSFUL)
- goto failed;
- rtems_libio_iop_freelist = next;
- goto done;
- }
-
-failed:
- iop = 0;
-
-done:
- rtems_semaphore_release( rtems_libio_semaphore );
- return iop;
-}
-
-/*
- * rtems_libio_free
- *
- * This routine frees the resources associated with an IOP (file descriptor)
- * and clears the slot in the IOP Table.
- */
-
-void rtems_libio_free(
- rtems_libio_t *iop
-)
-{
- rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
-
- if (iop->sem)
- rtems_semaphore_delete(iop->sem);
-
- iop->flags &= ~LIBIO_FLAGS_OPEN;
- iop->data1 = rtems_libio_iop_freelist;
- rtems_libio_iop_freelist = iop;
-
- rtems_semaphore_release(rtems_libio_semaphore);
-}
-
-/*
- * rtems_libio_is_open_files_in_fs
- *
- * This routine scans the entire file descriptor table to determine if the
- * are any active file descriptors that refer to the at least one node in the
- * file system that we are trying to dismount.
- *
- * If there is at least one node in the file system referenced by the mount
- * table entry a 1 is returned, otherwise a 0 is returned.
- */
-
-int rtems_libio_is_open_files_in_fs(
- rtems_filesystem_mount_table_entry_t * fs_mt_entry
-)
-{
- rtems_libio_t *iop;
- int result = 0;
- int i;
-
- rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
-
- /*
- * Look for any active file descriptor entry.
- */
-
- for (iop=rtems_libio_iops,i=0; i < rtems_libio_number_iops; iop++, i++){
-
- if ((iop->flags & LIBIO_FLAGS_OPEN) != 0) {
-
- /*
- * Check if this node is under the file system that we
- * are trying to dismount.
- */
-
- if ( iop->pathinfo.mt_entry == fs_mt_entry ) {
- result = 1;
- break;
- }
- }
- }
-
- rtems_semaphore_release( rtems_libio_semaphore );
-
- return result;
-}
-
-/*
- * rtems_libio_is_file_open
- *
- * This routine scans the entire file descriptor table to determine if the
- * given file refers to an active file descriptor.
- *
- * If the given file is open a 1 is returned, otherwise a 0 is returned.
- */
-
-int rtems_libio_is_file_open(
- void *node_access
-)
-{
- rtems_libio_t *iop;
- int result=0;
- int i;
-
- rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
-
- /*
- * Look for any active file descriptor entry.
- */
-
- for (iop=rtems_libio_iops,i=0; i < rtems_libio_number_iops; iop++, i++){
- if ((iop->flags & LIBIO_FLAGS_OPEN) != 0) {
-
- /*
- * Check if this node is under the file system that we
- * are trying to dismount.
- */
-
- if ( iop->pathinfo.node_access == node_access ) {
- result = 1;
- break;
- }
- }
- }
-
- rtems_semaphore_release( rtems_libio_semaphore );
-
- return result;
-}
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 06:40:58 +0000