ec498d2660
Squashed commit of the following:
fs/spiffs: Fix last compilation issue. Now compiles without error. It is still not quite ready for testing as there is additional code review that must be be performed. It is now marked as EXPERIMENTAL so that it can be brought onto the master branch with little risk.
fs/spiffs: Remove some dead code.
fs/spiffs: Weak start of analysis of spiffs_nucleus.c. Renamed to spiffs_core.c
fs/spiffs: Rename spiffs_nucleus.c to spiffs_core.c
fs/spiffs: Remove spiffs_config.h. All configuration settings are now available in the SPIFFS Kconfig options.
fs/spiffs: Finished review, update, and repartitioning of spiffs_check.c. Added spiffs_check.h.
fs/spiffs: Finished review, update, and repartitioning of spiffs_cache.c. Added spiffs_cache.h.
fs/spiffs: Clean up some defines used in debug output statements.
fs/spiffs: Finished review, update, and repartitioning of spiffs_gc.c. Added spiffs_gc.h.
fs/spiffs: Now that VFS interface is completed, I have begun the long march of repartitioning the remaining functionality, reviewing logic, identifying dead code, and cleaning up loose ends.
fs/spiffs: Initial integration of MTD interface, replacing the SPIFFS native flash interface. Lots of open issues such as the use of pages vs. blocks vs. erase blocks and units of addresses, offsets, and lengths that are passed in function calls. Remove SPIFFS_USE_MAGIC support. That option (which default to OFF anyway), wrote a magic value at the beginning of every sector and support verifiable identification of the file system. It was not being and used and removing it makes life simpler.
fs/spiffs: Remove semaphore lock on the file object structure. Ultimately, the file access must modify the volume and access the volume structue which also has a exclusivity lock. So use of the volume lock alone should be sufficient.
Integrated the SPIFFS rename logic into the NuttX VFS. Removed non-standard application calls or convert them to IOCTL commands. These were converted to IOCTL commands: (1) integrity check, (2) garbage collection, and (3) format flash. These were removed: (1) Integrity check callback. These provided a lot of good information about the state of the file system, but such callbacks are not compatible with a POSIX compliant file system. (2) Index maps. The index maps were a performance improvement feature. The user could provide the memory and request that a region of a a file use that memory for improved lookup performance when accessing parts of the file. The fallback is the less performance lookup by traversing the FLASH memory. (3) Removed the quick garbage collection interface (the code is still used internally). Only the full garbage collection is available to the user application via IOCTL.
configs/sim/spiffs: A simulator configuration to use for testing SPIFFS.
fs/spiffs: Integrate SPIFFS logic into NuttX VFS bind() and unbind() methods.
fs/mount/fs_mount.c: Add SPIFFS to the list of drivers that require MTD vs block drivers.
fs/spiffs: Trivial changes, mostly from analysis of how to integrate the rename() VFS method.
fs/spiffs: Connect NuttX VFS unlink method to the SPIFFS_remove() function. Lots of name-changing.
fs/spiffs: Remove non-standard errno support. Remove bogus SPIFFS_LOCK() and SPIFFS_UNLOCK() macros.
fs/spiffs: Add NuttX VFS implementation for statfs() method. Clean up some of the accumulating compilation problems.
fs/spiffs: Add stat(), truncate() methods. Dummy out unsupport mkdir() and rmdir() methods.
fs/spiffs: Replace some of the custom error numbers with standard error numbers.
fs/spiffs: Hooks read(), write(), fstat(), ioctl(), opendir(), closedir(), rewindif(), and readdir() into the NuttX VFS.
fs/spiffs: Beginning the organization to work with the NuttX VFS. Lots of things are get broken!
fs/spiffs: Add spiffs.c which will be the interface between SPIFFS and NuttX. No very close at present, however.
fs/spiffs: Clean up some compile problems introduced by coding standard changes.
fs/spiffs: A little closer to NuttX coding standard.
fs/spiffs: Ran tools/indent.sh against all files. Closer to NuttX coding standard, but needs a lot more effort to be fully compliant.
fs/spiffs: This commit brings in version 0.3.7 of Peter Anderson's SPIFFS. The initial commit includes the core FS files (with some definitions destributed to their correct header files) and hooks into the build system.
182 lines
7.5 KiB
C
182 lines
7.5 KiB
C
/********************************************************************************
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* include/fcntl.h
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*
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* Copyright (C) 2007-2009, 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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********************************************************************************/
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#ifndef __INCLUDE_FCNTL_H
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#define __INCLUDE_FCNTL_H
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/********************************************************************************
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* Included Files
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********************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdint.h>
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/********************************************************************************
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* Pre-processor Definitions
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********************************************************************************/
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/* open flag settings for open() (and related APIs) */
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#define O_RDONLY (1 << 0) /* Open for read access (only) */
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#define O_RDOK O_RDONLY /* Read access is permitted (non-standard) */
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#define O_WRONLY (1 << 1) /* Open for write access (only) */
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#define O_WROK O_WRONLY /* Write access is permitted (non-standard) */
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#define O_RDWR (O_RDOK|O_WROK) /* Open for both read & write access */
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#define O_CREAT (1 << 2) /* Create file/sem/mq object */
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#define O_EXCL (1 << 3) /* Name must not exist when opened */
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#define O_APPEND (1 << 4) /* Keep contents, append to end */
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#define O_TRUNC (1 << 5) /* Delete contents */
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#define O_NONBLOCK (1 << 6) /* Don't wait for data */
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#define O_NDELAY O_NONBLOCK /* Synonym for O_NONBLOCK */
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#define O_SYNC (1 << 7) /* Synchronize output on write */
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#define O_DSYNC O_SYNC /* Equivalent to OSYNC in NuttX */
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#define O_BINARY (1 << 8) /* Open the file in binary (untranslated) mode. */
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#define O_DIRECT (1 << 9) /* Avoid caching, write directly to hardware */
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/* Unsupported, but required open flags */
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#define O_RSYNC 0 /* Synchronize input on read */
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#define O_ACCMODE O_RDWR /* Mask for access mode */
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#define O_NOCTTY 0 /* Required by POSIX */
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#define O_TEXT 0 /* Open the file in text (translated) mode. */
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/* This is the highest bit number used in the open flags bitset. Bits above
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* this bit number may be used within NuttX for other, internal purposes.
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*/
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#define _O_MAXBIT 8
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/* Synonyms historically used as F_SETFL flags (BSD). */
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#define FNDELAY O_NONBLOCK /* Don't wait for data */
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#define FNONBLOCK O_NONBLOCK /* Don't wait for data */
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#define FAPPEND O_APPEND /* Keep contents, append to end */
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#define FSYNC O_SYNC /* Synchronize output on write */
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#define FASYNC 0 /* No counterpart in NuttX */
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/* FFCNTL is all the bits that may be set via fcntl. */
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#define FFCNTL (FNONBLOCK | FNDELAY | FAPPEND | FSYNC | FASYNC)
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/* fcntl() commands */
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#define F_DUPFD 0 /* Duplicate a file descriptor */
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#define F_GETFD 1 /* Read the file descriptor flags */
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#define F_GETFL 2 /* Read the file status flags */
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#define F_GETLEASE 3 /* Indicates what type of lease is held on fd (linux) */
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#define F_GETLK 4 /* Check if we could place a lock */
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#define F_GETOWN 5 /* Get the pid receiving SIGIO and SIGURG signals for fd */
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#define F_GETSIG 6 /* Get the signal sent */
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#define F_NOTIFY 7 /* Provide notification when directory referred to by fd changes (linux)*/
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#define F_SETFD 8 /* Set the file descriptor flags to value */
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#define F_SETFL 9 /* Set the file status flags to the value */
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#define F_SETLEASE 10 /* Set or remove file lease (linux) */
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#define F_SETLK 11 /* Acquire or release a lock on range of bytes */
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#define F_SETLKW 12 /* Like F_SETLK, but wait for lock to become available */
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#define F_SETOWN 13 /* Set pid that will receive SIGIO and SIGURG signals for fd */
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#define F_SETSIG 14 /* Set the signal to be sent */
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/* For posix fcntl() and lockf() */
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#define F_RDLCK 0 /* Take out a read lease */
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#define F_WRLCK 1 /* Take out a write lease */
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#define F_UNLCK 2 /* Remove a lease */
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/* close-on-exec flag for F_GETRL and F_SETFL */
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#define FD_CLOEXEC 1
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/* These are the notifications that can be received from F_NOTIFY (linux) */
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#define DN_ACCESS 0 /* A file was accessed */
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#define DN_MODIFY 1 /* A file was modified */
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#define DN_CREATE 2 /* A file was created */
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#define DN_DELETE 3 /* A file was unlinked */
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#define DN_RENAME 4 /* A file was renamed */
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#define DN_ATTRIB 5 /* Attributes of a file were changed */
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/* int creat(const char *path, mode_t mode);
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*
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* is equivalent to open with O_WRONLY|O_CREAT|O_TRUNC.
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*/
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#define creat(path, mode) open(path, O_WRONLY|O_CREAT|O_TRUNC, mode)
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/********************************************************************************
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* Public Type Definitions
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********************************************************************************/
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/* struct flock is the third argument for F_GETLK, F_SETLK and F_SETLKW */
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struct flock
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{
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int16_t l_type; /* Type of lock: F_RDLCK, F_WRLCK, F_UNLCK */
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int16_t l_whence; /* How to interpret l_start: SEEK_SET, SEEK_CUR, SEEK_END */
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off_t l_start; /* Starting offset for lock */
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off_t l_len; /* Number of bytes to lock */
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pid_t l_pid; /* PID of process blocking our lock (F_GETLK only) */
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};
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/********************************************************************************
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* Public Function Prototypes
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********************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/********************************************************************************
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* Public Data
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********************************************************************************/
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/* POSIX-like File System Interfaces */
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int open(const char *path, int oflag, ...);
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int fcntl(int fd, int cmd, ...);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __INCLUDE_FCNTL_H */
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