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Diffstat (limited to 'nuttx/fs/fs_fdopen.c')
-rw-r--r--nuttx/fs/fs_fdopen.c264
1 files changed, 0 insertions, 264 deletions
diff --git a/nuttx/fs/fs_fdopen.c b/nuttx/fs/fs_fdopen.c
deleted file mode 100644
index d8a370482..000000000
--- a/nuttx/fs/fs_fdopen.c
+++ /dev/null
@@ -1,264 +0,0 @@
-/****************************************************************************
- * fs/fs_fdopen.c
- *
- * Copyright (C) 2007-2013 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <stdio.h>
-#include <string.h>
-#include <semaphore.h>
-#include <fcntl.h>
-#include <errno.h>
-
-#include <nuttx/kmalloc.h>
-#include <nuttx/fs/fs.h>
-#include <nuttx/net/net.h>
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: fs_checkfd
- *
- * Description:
- * Check if the file descriptor is valid for the provided TCB and if it
- * supports the requested access.
- *
- ****************************************************************************/
-
-#if CONFIG_NFILE_DESCRIPTORS > 0
-static inline int fs_checkfd(FAR _TCB *tcb, int fd, int oflags)
-{
- FAR struct filelist *flist;
- FAR struct inode *inode;
-
- DEBUGASSERT(tcb && tcb->group);
-
- /* Get the file list from the task group */
-
- flist = &tcb->group->tg_filelist;
-
- /* Get the inode associated with the file descriptor. This should
- * normally be the case if fd >= 0. But not in the case where the
- * called attempts to explictly stdin with fdopen(0) but stdin has
- * been closed.
- */
-
- inode = flist->fl_files[fd].f_inode;
- if (!inode)
- {
- /* No inode -- descriptor does not correspond to an open file */
-
- return -ENOENT;
- }
-
- /* Make sure that the inode supports the requested access. In
- * the case of fdopen, we are not actually creating the file -- in
- * particular w and w+ do not truncate the file and any files have
- * already been created.
- */
-
- if (inode_checkflags(inode, oflags) != OK)
- {
- /* Cannot support the requested access */
-
- return -EACCES;
- }
-
- /* Looks good to me */
-
- return OK;
-}
-#endif
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: fs_fdopen
- *
- * Description:
- * This function does the core operations for fopen and fdopen.
- *
- ****************************************************************************/
-
-FAR struct file_struct *fs_fdopen(int fd, int oflags, FAR _TCB *tcb)
-{
- FAR struct streamlist *slist;
- FAR FILE *stream;
- int err = OK;
- int ret;
- int i;
-
- /* Check input parameters */
-
- if (fd < 0)
- {
- err = EBADF;
- goto errout;
- }
-
- /* A NULL TCB pointer means to use this threads TCB. This is a little
- * hack the let's this function be called from user-space (via a syscall)
- * without having access to the TCB.
- */
-
- if (!tcb)
- {
- tcb = sched_self();
- }
- DEBUGASSERT(tcb && tcb->group);
-
- /* Verify that this is a valid file/socket descriptor and that the
- * requested access can be support.
- *
- * Is this fd in the range of valid file descriptors? Socket descriptors
- * lie in a different range.
- */
-
-#if CONFIG_NFILE_DESCRIPTORS > 0
- if ((unsigned int)fd >= CONFIG_NFILE_DESCRIPTORS)
-#endif
- {
- /* No.. If networking is enabled then this might be a socket
- * descriptor.
- */
-
-#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0
- ret = net_checksd(fd, oflags);
-#else
- /* No networking... it is just a bad descriptor */
-
- err = EBADF;
- goto errout;
-#endif
- }
-
- /* The descriptor is in a valid range to file descriptor... perform some more checks */
-
-#if CONFIG_NFILE_DESCRIPTORS > 0
- else
- {
- ret = fs_checkfd(tcb, fd, oflags);
- }
-#endif
-
- /* Do we have a good descriptor of some sort? */
-
- if (ret < 0)
- {
- /* No... return the reported error */
-
- err = -ret;
- goto errout;
- }
-
- /* Get the stream list from the TCB */
-
- slist = &tcb->group->tg_streamlist;
-
- /* Find an unallocated FILE structure in the stream list */
-
- ret = sem_wait(&slist->sl_sem);
- if (ret != OK)
- {
- goto errout_with_errno;
- }
-
- for (i = 0 ; i < CONFIG_NFILE_STREAMS; i++)
- {
- stream = &slist->sl_streams[i];
- if (stream->fs_filedes < 0)
- {
- /* Zero the structure */
-
-#if CONFIG_STDIO_BUFFER_SIZE > 0
- memset(stream, 0, sizeof(FILE));
-#elif CONFIG_NUNGET_CHARS > 0
- stream->fs_nungotten = 0;
-#endif
-
-#if CONFIG_STDIO_BUFFER_SIZE > 0
- /* Initialize the semaphore the manages access to the buffer */
-
- (void)sem_init(&stream->fs_sem, 0, 1);
-
- /* Allocate the IO buffer */
-
- stream->fs_bufstart = kmalloc(CONFIG_STDIO_BUFFER_SIZE);
- if (!stream->fs_bufstart)
- {
- err = ENOMEM;
- goto errout_with_sem;
- }
-
- /* Set up pointers */
-
- stream->fs_bufend = &stream->fs_bufstart[CONFIG_STDIO_BUFFER_SIZE];
- stream->fs_bufpos = stream->fs_bufstart;
- stream->fs_bufpos = stream->fs_bufstart;
- stream->fs_bufread = stream->fs_bufstart;
-#endif
- /* Save the file description and open flags. Setting the
- * file descriptor locks this stream.
- */
-
- stream->fs_filedes = fd;
- stream->fs_oflags = (uint16_t)oflags;
-
- sem_post(&slist->sl_sem);
- return stream;
- }
- }
-
- /* No free stream available.. report ENFILE */
-
- err = ENFILE;
-
-#if CONFIG_STDIO_BUFFER_SIZE > 0
-errout_with_sem:
-#endif
- sem_post(&slist->sl_sem);
-
-errout:
- set_errno(err);
-errout_with_errno:
- return NULL;
-}
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