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Add unlink(), mkdir(), rmdir(), and rename()

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@246 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2007-05-21 14:36:00 +00:00
parent 982949fd81
commit 0cb1595215
14 changed files with 794 additions and 45 deletions
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1
ChangeLog
View File

@ -140,5 +140,6 @@
0.2.6 2007-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
* Added unlink(), mkdir(), rmdir(), and rename()
* Started m68322

1
Documentation/NuttX.html
View File

@ -519,6 +519,7 @@ Other memory:
0.2.6 2007-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
* Added unlink(), mkdir(), rmdir(), and rename()
* Started m68322
</pre></ul>

5
TODO
View File

@ -38,9 +38,8 @@ o Libraries
- sscanf() and lib_vsprintf() do not support floating point values.
o File system
- Add disk usage stats, stat(), unlink(), mkdir(), chmod(), rename(),
etc.
- FAT32: long file names
- Add disk usage stats, stat(), chmod(), truncate().
- FAT32: long file names, unlink(), mkdir(), rmdir(), rename()
o Console Output

3
fs/Makefile
View File

@ -46,7 +46,8 @@ CSRCS = fs_open.c fs_close.c fs_read.c fs_write.c fs_ioctl.c fs_dup.c \
fs_inode.c fs_inodefind.c fs_inodefinddir.c fs_inodereserve.c \
fs_inoderemove.c fs_registerdriver.c fs_unregisterdriver.c \
fs_registerblockdriver.c fs_unregisterblockdriver.c \
fs_mount.c fs_umount.c fs_inodeaddref.c fs_inoderelease.c
fs_mount.c fs_umount.c fs_unlink.c fs_mkdir.c fs_rmdir.c \
fs_rename.c fs_inodeaddref.c fs_inoderelease.c
ifeq ($(CONFIG_FS_FAT),y)
CSRCS += fs_fat32.c fs_fat32util.c
endif

162
fs/fs_fat32.c
View File

@ -82,9 +82,16 @@ static ssize_t fat_write(FAR struct file *filp, const char *buffer,
static off_t fat_seek(FAR struct file *filp, off_t offset, int whence);
static int fat_ioctl(FAR struct file *filp, int cmd, unsigned long arg);
static int fat_sync(FAR struct file *filp);
static int fat_bind(FAR struct inode *blkdriver, const void *data,
void **handle);
static int fat_unbind(void *handle);
static int fat_unlink(struct inode *mountpt, const char *rel_path);
static int fat_mkdir(struct inode *mountpt, const char *rel_path,
mode_t mode);
static int fat_rmdir(struct inode *mountpt, const char *rel_path);
static int fat_rename(struct inode *mountpt, const char *old_relpath,
const char *new_relpath);
/****************************************************************************
* Private Variables
@ -108,8 +115,12 @@ const struct mountpt_operations fat_operations =
fat_seek,
fat_ioctl,
fat_sync,
fat_bind,
fat_unbind
fat_unbind,
fat_unlink,
fat_mkdir,
fat_rename
};
/****************************************************************************
@ -1302,6 +1313,155 @@ static int fat_unbind(void *handle)
return ret;
}
/****************************************************************************
* Name: fat_unlink
*
* Description: Remove a file
*
****************************************************************************/
static int fat_unlink(struct inode *mountpt, const char *rel_path)
{
struct fat_mountpt_s *fs;
int ret;
/* Sanity checks */
DEBUGASSERT(mountpt && mountpt->i_private);
/* Get the mountpoint private data from the inode structure */
fs = mountpt->i_private;
/* Check if the mount is still healthy */
fat_semtake(fs);
ret = fat_checkmount(fs);
if (ret != OK)
{
goto errout_with_semaphore;
}
#warning "fat_unlink is not implemented"
ret = -ENOSYS;
errout_with_semaphore:
fat_semgive(fs);
return ret;
}
/****************************************************************************
* Name: fat_mkdir
*
* Description: Create a directory
*
****************************************************************************/
static int fat_mkdir(struct inode *mountpt, const char *rel_path, mode_t mode)
{
struct fat_mountpt_s *fs;
int ret;
/* Sanity checks */
DEBUGASSERT(mountpt && mountpt->i_private);
/* Get the mountpoint private data from the inode structure */
fs = mountpt->i_private;
/* Check if the mount is still healthy */
fat_semtake(fs);
ret = fat_checkmount(fs);
if (ret != OK)
{
goto errout_with_semaphore;
}
#warning "fat_mkdir is not implemented"
ret = -ENOSYS;
errout_with_semaphore:
fat_semgive(fs);
return ret;
}
/****************************************************************************
* Name: fat_rmdir
*
* Description: Remove a directory
*
****************************************************************************/
int fat_rmdir(struct inode *mountpt, const char *rel_path)
{
struct fat_mountpt_s *fs;
int ret;
/* Sanity checks */
DEBUGASSERT(mountpt && mountpt->i_private);
/* Get the mountpoint private data from the inode structure */
fs = mountpt->i_private;
/* Check if the mount is still healthy */
fat_semtake(fs);
ret = fat_checkmount(fs);
if (ret != OK)
{
goto errout_with_semaphore;
}
#warning "fat_rmdir is not implemented"
ret = -ENOSYS;
errout_with_semaphore:
fat_semgive(fs);
return ret;
}
/****************************************************************************
* Name: fat_rename
*
* Description: Rename a file or directory
*
****************************************************************************/
int fat_rename(struct inode *mountpt, const char *old_relpath,
const char *new_relpath)
{
struct fat_mountpt_s *fs;
int ret;
/* Sanity checks */
DEBUGASSERT(mountpt && mountpt->i_private);
/* Get the mountpoint private data from the inode structure */
fs = mountpt->i_private;
/* Check if the mount is still healthy */
fat_semtake(fs);
ret = fat_checkmount(fs);
if (ret != OK)
{
goto errout_with_semaphore;
}
#warning "fat_rename is not implemented"
ret = -ENOSYS;
errout_with_semaphore:
fat_semgive(fs);
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/

133
fs/fs_mkdir.c Normal file
View File

@ -0,0 +1,133 @@
/****************************************************************************
* fs_mkdir.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 Gregory Nutt 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 <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <nuttx/fs.h>
#include "fs_internal.h"
#if CONFIG_NFILE_DESCRIPTORS > 0
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: mkdir
*
* Description: Create a directory
*
****************************************************************************/
int mkdir(const char *pathname, mode_t mode)
{
FAR struct inode *inode;
const char *relpath = NULL;
int ret;
/* Get an inode for this file */
inode = inode_find(pathname, &relpath);
if (!inode)
{
/* There is no mountpoint that includes in this path */
ret = ENOENT;
goto errout;
}
/* Verify that the inode is a valid mountpoint. */
if (!INODE_IS_MOUNTPT(inode) || !inode->u.i_mops)
{
ret = ENXIO;
goto errout_with_inode;
}
/* Perform the mkdir operation using the relative path
* at the mountpoint.
*/
if (inode->u.i_mops->mkdir)
{
ret = inode->u.i_mops->mkdir(inode, relpath, mode);
if (ret < 0)
{
ret = -ret;
goto errout_with_inode;
}
}
else
{
ret = ENOSYS;
goto errout_with_inode;
}
/* Directory successfully created */
inode_release(inode);
return OK;
errout_with_inode:
inode_release(inode);
errout:
*get_errno_ptr() = ret;
return ERROR;
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

67
fs/fs_open.c
View File

@ -63,8 +63,7 @@ int inode_checkflags(FAR struct inode *inode, int oflags)
if (((oflags & O_RDOK) != 0 && !inode->u.i_ops->read) ||
((oflags & O_WROK) != 0 && !inode->u.i_ops->write))
{
*get_errno_ptr() = EACCES;
return ERROR;
return -EACCES;
}
else
{
@ -74,19 +73,20 @@ int inode_checkflags(FAR struct inode *inode, int oflags)
int open(const char *path, int oflags, ...)
{
struct filelist *list;
struct filelist *list;
FAR struct inode *inode;
mode_t mode = 0666;
int status;
int fd;
const char *relpath = NULL;
mode_t mode = 0666;
int ret;
int fd;
/* Get the thread-specific file list */
list = sched_getfiles();
if (!list)
{
*get_errno_ptr() = EMFILE;
return ERROR;
ret = EMFILE;
goto errout;
}
#ifdef CONFIG_FILE_MODE
@ -105,7 +105,6 @@ int open(const char *path, int oflags, ...)
/* Get an inode for this file */
const char *relpath = NULL;
inode = inode_find(path, &relpath);
if (!inode)
{
@ -114,26 +113,27 @@ int open(const char *path, int oflags, ...)
* dangling symbolic link."
*/
*get_errno_ptr() = ENOENT;
return ERROR;
ret = ENOENT;
goto errout;
}
/* Verify that the inode is either a "normal" or a mountpoint. We
/* Verify that the inode is valid and either a "normal" or a mountpoint. We
* specifically exclude block drivers.
*/
if (!INODE_IS_DRIVER(inode) && !INODE_IS_MOUNTPT(inode))
if ((!INODE_IS_DRIVER(inode) && !INODE_IS_MOUNTPT(inode)) || !inode->u.i_ops)
{
*get_errno_ptr() = ENXIO;
return ERROR;
ret = ENXIO;
goto errout_with_inode;
}
/* Make sure that the inode supports the requested access */
if (inode_checkflags(inode, oflags) != OK)
ret = inode_checkflags(inode, oflags);
if (ret < 0)
{
inode_release(inode);
return ERROR;
ret = -ret;
goto errout_with_inode;
}
/* Associate the inode with a file structure */
@ -141,9 +141,8 @@ int open(const char *path, int oflags, ...)
fd = files_allocate(inode, oflags, 0);
if (fd < 0)
{
inode_release(inode);
*get_errno_ptr() = EMFILE;
return ERROR;
ret = EMFILE;
goto errout_with_inode;
}
/* Perform the driver open operation. NOTE that the open method may
@ -151,29 +150,35 @@ int open(const char *path, int oflags, ...)
* becuase it may also be closed that many times.
*/
status = OK;
if (inode->u.i_ops && inode->u.i_ops->open)
ret = OK;
if (inode->u.i_ops->open)
{
if (INODE_IS_MOUNTPT(inode))
{
status = inode->u.i_mops->open((FAR struct file*)&list->fl_files[fd],
relpath, oflags, mode);
ret = inode->u.i_mops->open((FAR struct file*)&list->fl_files[fd],
relpath, oflags, mode);
}
else
{
status = inode->u.i_ops->open((FAR struct file*)&list->fl_files[fd]);
ret = inode->u.i_ops->open((FAR struct file*)&list->fl_files[fd]);
}
}
if (status != OK || !inode->u.i_ops)
if (ret < 0)
{
files_release(fd);
inode_release(inode);
*get_errno_ptr() = ENODEV;
return ERROR;
ret = -ret;
goto errout_with_fd;
}
return fd;
errout_with_fd:
files_release(fd);
errout_with_inode:
inode_release(inode);
errout:
*get_errno_ptr() = ret;
return ERROR;
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

157
fs/fs_rename.c Normal file
View File

@ -0,0 +1,157 @@
/****************************************************************************
* fs_rename.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 Gregory Nutt 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 <sys/types.h>
#include <stdio.h>
#include <errno.h>
#include <nuttx/fs.h>
#include "fs_internal.h"
#if CONFIG_NFILE_DESCRIPTORS > 0
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: rename
*
* Description: Remove a file managed a mountpoint
*
****************************************************************************/
int rename(const char *oldpath, const char *newpath)
{
FAR struct inode *oldinode;
FAR struct inode *newinode;
const char *oldrelpath = NULL;
const char *newrelpath = NULL;
int ret;
/* Get an inode for the old relpath */
oldinode = inode_find(oldpath, &oldrelpath);
if (!oldinode)
{
/* There is no mountpoint that includes in this path */
ret = ENOENT;
goto errout;
}
/* Verify that the old inode is a valid mountpoint. */
if (!INODE_IS_MOUNTPT(oldinode) || !oldinode->u.i_mops)
{
ret = ENXIO;
goto errout_with_oldinode;
}
/* Get an inode for the new relpath -- it should like on the same mountpoint */
newinode = inode_find(newpath, &newrelpath);
if (!newinode)
{
/* There is no mountpoint that includes in this path */
ret = ENOENT;
goto errout_with_oldinode;
}
/* Verify that the two pathes lie on the same mountpt inode */
if (oldinode != newinode)
{
ret = EXDEV;
goto errout_with_newinode;
}
/* Perform the rename operation using the relative pathes
* at the common mountpoint.
*/
if (oldinode->u.i_mops->rename)
{
ret = oldinode->u.i_mops->rename(oldinode, oldrelpath, newrelpath);
if (ret < 0)
{
ret = -ret;
goto errout_with_newinode;
}
}
else
{
ret = ENOSYS;
goto errout_with_newinode;
}
/* Successfully renamed */
inode_release(oldinode);
inode_release(newinode);
return OK;
errout_with_newinode:
inode_release(newinode);
errout_with_oldinode:
inode_release(oldinode);
errout:
*get_errno_ptr() = ret;
return ERROR;
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

133
fs/fs_rmdir.c Normal file
View File

@ -0,0 +1,133 @@
/****************************************************************************
* fs_rmdir.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 Gregory Nutt 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 <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <nuttx/fs.h>
#include "fs_internal.h"
#if CONFIG_NFILE_DESCRIPTORS > 0
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: rmdir
*
* Description: Remove a file managed a mountpoint
*
****************************************************************************/
int rmdir(const char *pathname)
{
FAR struct inode *inode;
const char *relpath = NULL;
int ret;
/* Get an inode for this file */
inode = inode_find(pathname, &relpath);
if (!inode)
{
/* There is no mountpoint that includes in this path */
ret = ENOENT;
goto errout;
}
/* Verify that the inode is a valid mountpoint. */
if (!INODE_IS_MOUNTPT(inode) || !inode->u.i_mops)
{
ret = ENXIO;
goto errout_with_inode;
}
/* Perform the rmdir operation using the relative path
* at the mountpoint.
*/
if (inode->u.i_mops->rmdir)
{
ret = inode->u.i_mops->rmdir(inode, relpath);
if (ret < 0)
{
ret = -ret;
goto errout_with_inode;
}
}
else
{
ret = ENOSYS;
goto errout_with_inode;
}
/* Successfully removed the directory */
inode_release(inode);
return OK;
errout_with_inode:
inode_release(inode);
errout:
*get_errno_ptr() = ret;
return ERROR;
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

133
fs/fs_unlink.c Normal file
View File

@ -0,0 +1,133 @@
/****************************************************************************
* fs_unlink.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 Gregory Nutt 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 <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <nuttx/fs.h>
#include "fs_internal.h"
#if CONFIG_NFILE_DESCRIPTORS > 0
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Variables
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: unlink
*
* Description: Remove a file managed a mountpoint
*
****************************************************************************/
int unlink(const char *pathname)
{
FAR struct inode *inode;
const char *relpath = NULL;
int ret;
/* Get an inode for this file */
inode = inode_find(pathname, &relpath);
if (!inode)
{
/* There is no mountpoint that includes in this path */
ret = ENOENT;
goto errout;
}
/* Verify that the inode is a valid mountpoint. */
if (!INODE_IS_MOUNTPT(inode) || !inode->u.i_mops)
{
ret = ENXIO;
goto errout_with_inode;
}
/* Perform the unlink operation using the relative path
* at the mountpoint.
*/
if (inode->u.i_mops->unlink)
{
ret = inode->u.i_mops->unlink(inode, relpath);
if (ret < 0)
{
ret = -ret;
goto errout_with_inode;
}
}
else
{
ret = ENOSYS;
goto errout_with_inode;
}
/* Successfully unlinked */
inode_release(inode);
return OK;
errout_with_inode:
inode_release(inode);
errout:
*get_errno_ptr() = ret;
return ERROR;
}
#endif /* CONFIG_NFILE_DESCRIPTORS */

14
include/nuttx/fs.h
View File

@ -139,20 +139,24 @@ struct mountpt_operations
/* The two structures need not be common after this point. The following
* are extended methods needed to deal with the unique needs of mounted
* file systems.
*
* Additional open-file-specific mountpoint operations:
*/
int (*sync)(FAR struct file *filp);
/* The two structures need not be common after this point. For the
* case of struct mountpt_operations, additional operations are included
* that used only for mounting and unmounting the volume.
*/
/* General volume-related mountpoint operations: */
int (*bind)(FAR struct inode *blkdriver, const void *data, void **handle);
int (*unbind)(void *handle);
int (*unlink)(struct inode *mountpt, const char *rel_path);
int (*mkdir)(struct inode *mountpt, const char *rel_path, mode_t mode);
int (*rmdir)(struct inode *mountpt, const char *rel_path);
int (*rename)(struct inode *mountpt, const char *old_relpath, const char *new_relpath);
/* NOTE: More operations will be needed here to support: disk usage stats
* stat(), unlink(), mkdir(), chmod(), rename(), etc.
* file stat(), file attributes, file truncation, etc.
*/
};

4
include/stdio.h
View File

@ -155,7 +155,7 @@ EXTERN char *gets(char *s);
EXTERN int printf(const char *format, ...);
EXTERN int puts(const char *s);
EXTERN int rename(const char *source, const char *target);
EXTERN int rename(const char *oldpath, const char *newpath);
EXTERN int sprintf(char *dest, const char *format, ...);
EXTERN int ungetc(int c, FILE *stream);
EXTERN int vprintf(const char *s, va_list ap);
@ -168,8 +168,6 @@ EXTERN int chdir(const char *path);
EXTERN FILE *fdopen(int fd, const char *type);
EXTERN int fstat(int fd, FAR struct stat *buf);
EXTERN char *getcwd(FAR char *buf, size_t size);
EXTERN int mkdir(const char *path, mode_t mode);
EXTERN int rmdir(const char *path);
EXTERN int stat(const char *path, FAR struct stat *buf);
EXTERN int statfs(const char *path, FAR struct statfs *buf);

19
include/sys/stat.h
View File

@ -46,4 +46,23 @@
* Type Definitions
************************************************************/
/************************************************************
* Global Function Prototypes
************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
EXTERN int mkdir(const char *pathname, mode_t mode);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __SYS_STAT_H */

7
include/unistd.h
View File

@ -108,7 +108,7 @@ extern "C" {
#define EXTERN extern
#endif
/* Task Control Interfaces (based on ANSII APIs) */
/* Task Control Interfaces */
EXTERN pid_t getpid(void);
EXTERN void _exit(int status) noreturn_function;
@ -126,6 +126,11 @@ EXTERN int read(int fd, void *buf, unsigned int nbytes);
EXTERN int unlink(const char *path);
EXTERN int write(int fd, const void *buf, unsigned int nbytes);
/* File path operations */
EXTERN int unlink(const char *pathname);
EXTERN int rmdir(const char *pathname);
#undef EXTERN
#if defined(__cplusplus)
}