[libc][posix] create 'posix' folder and move related files into it

3 files changed, 0 insertions, 517 deletions

diff --git a/components/libc/aio/SConscript b/components/libc/aio/SConscript
deleted file mode 100644
index f10462e9c4..0000000000
--- a/components/libc/aio/SConscript
+++ /dev/null
@@ -1,11 +0,0 @@
-# RT-Thread building script for component
-
-from building import *
-
-cwd     = GetCurrentDir()
-src     = Glob('*.c') + Glob('*.cpp')
-CPPPATH = [cwd]
-
-group = DefineGroup('libc', src, depend = ['RT_USING_POSIX', 'RT_USING_POSIX_AIO'], CPPPATH = CPPPATH)
-
-Return('group')
diff --git a/components/libc/aio/posix_aio.c b/components/libc/aio/posix_aio.c
deleted file mode 100644
index 66cced8687..0000000000
--- a/components/libc/aio/posix_aio.c
+++ /dev/null
@@ -1,459 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017/12/30     Bernard      The first version.
- */
-
-#include <stdint.h>
-#include <rthw.h>
-#include <dfs_posix.h>
-#include "posix_aio.h"
-
-struct rt_workqueue* aio_queue = NULL;
-
-/**
- * The aio_cancel() function shall attempt to cancel one or more asynchronous I/O
- * requests currently outstanding against file descriptor fildes. The aiocbp
- * argument points to the asynchronous I/O control block for a particular request
- * to be canceled. If aiocbp is NULL, then all outstanding cancelable asynchronous
- * I/O requests against fildes shall be canceled.
- *
- * Normal asynchronous notification shall occur for asynchronous I/O operations
- * that are successfully canceled. If there are requests that cannot be canceled,
- * then the normal asynchronous completion process shall take place for those
- * requests when they are completed.
- *
- * For requested operations that are successfully canceled, the associated error
- * status shall be set to [ECANCELED] and the return status shall be -1. For
- * requested operations that are not successfully canceled, the aiocbp shall not
- * be modified by aio_cancel().
- *
- * If aiocbp is not NULL, then if fildes does not have the same value as the file
- * descriptor with which the asynchronous operation was initiated, unspecified results occur.
- *
- * Which operations are cancelable is implementation-defined.
- */
-int aio_cancel(int fd, struct aiocb *cb)
-{
-    rt_err_t ret;
-
-    if (!cb) return -EINVAL;
-    if (cb->aio_fildes != fd) return -EINVAL;
-
-    ret = rt_workqueue_cancel_work_sync(aio_queue, &(cb->aio_work));
-    if (ret == RT_EOK)
-    {
-        errno = -ECANCELED;
-        return -1;
-    }
-
-    return 0;
-}
-
-/**
- * The aio_error() function shall return the error status associated with the
- * aiocb structure referenced by the aiocbp argument. The error status for an
- * asynchronous I/O operation is the errno value that would be set by the corresponding
- * read(), write(),
- */
-int aio_error (const struct aiocb *cb)
-{
-    if (cb)
-    {
-        return cb->aio_result;
-    }
-
-    return -EINVAL;
-}
-
-/**
- * The aio_fsync() function shall asynchronously perform a file synchronization
- * operation, as specified by the op argument, for I/O operations associated with
- * the file indicated by the file descriptor aio_fildes member of the aiocb
- * structure referenced by the aiocbp argument and queued at the time of the
- * call to aio_fsync(). The function call shall return when the synchronization
- * request has been initiated or queued to the file or device (even when the data
- * cannot be synchronized immediately).
- *
- * option: If op is O_DSYNC, all currently queued I/O operations shall be completed
- * as if by a call to fdatasync(); that is, as defined for synchronized I/O data
- * integrity completion.
- *
- * option: If op is O_SYNC, all currently queued I/O operations shall be completed
- * as if by a call to fsync(); that is, as defined for synchronized I/O file integrity
- * completion. If the aio_fsync() function fails, or if the operation queued by
- * aio_fsync() fails, then outstanding I/O operations are not guaranteed to have
- * been completed.
- *
- * If aio_fsync() succeeds, then it is only the I/O that was queued at the time
- * of the call to aio_fsync() that is guaranteed to be forced to the relevant
- * completion state. The completion of subsequent I/O on the file descriptor is
- * not guaranteed to be completed in a synchronized fashion.
- *
- * The aiocbp argument refers to an asynchronous I/O control block. The aiocbp
- * value may be used as an argument to aio_error() and aio_return() in order to
- * determine the error status and return status, respectively, of the asynchronous
- * operation while it is proceeding. When the request is queued, the error status
- * for the operation is [EINPROGRESS]. When all data has been successfully transferred,
- * the error status shall be reset to reflect the success or failure of the operation.
- * If the operation does not complete successfully, the error status for the
- * operation shall be set to indicate the error. The aio_sigevent member determines
- * the asynchronous notification to occur as specified in Signal Generation and
- * Delivery when all operations have achieved synchronized I/O completion. All
- * other members of the structure referenced by aiocbp are ignored. If the control
- * block referenced by aiocbp becomes an illegal address prior to asynchronous
- * I/O completion, then the behavior is undefined.
- *
- * If the aio_fsync() function fails or aiocbp indicates an error condition,
- * data is not guaranteed to have been successfully transferred.
- */
-static void aio_fync_work(struct rt_work* work, void* work_data)
-{
-    int result;
-    rt_ubase_t level;
-    struct aiocb *cb = (struct aiocb*)work_data;
-
-    RT_ASSERT(cb != RT_NULL);
-
-    result = fsync(cb->aio_fildes);
-    /* modify result */
-    level = rt_hw_interrupt_disable();
-    if (result < 0)
-        cb->aio_result = errno;
-    else
-        cb->aio_result = 0;
-    rt_hw_interrupt_enable(level);
-
-    return ;
-}
-
-int aio_fsync(int op, struct aiocb *cb)
-{
-    rt_ubase_t level;
-    if (!cb) return -EINVAL;
-
-    level = rt_hw_interrupt_disable();
-    cb->aio_result = -EINPROGRESS;
-    rt_hw_interrupt_enable(level);
-
-    rt_work_init(&(cb->aio_work), aio_fync_work, cb);
-    rt_workqueue_dowork(aio_queue, &(cb->aio_work));
-
-    return 0;
-}
-
-static void aio_read_work(struct rt_work* work, void* work_data)
-{
-    int len;
-    rt_ubase_t level;
-    uint8_t *buf_ptr;
-    struct aiocb *cb = (struct aiocb*)work_data;
-
-    buf_ptr = (uint8_t*)cb->aio_buf;
-
-    /* seek to offset */
-    lseek(cb->aio_fildes, cb->aio_offset, SEEK_SET);
-    len = read(cb->aio_fildes, &buf_ptr[cb->aio_offset], cb->aio_nbytes);
-
-    /* modify result */
-    level = rt_hw_interrupt_disable();
-    if (len <= 0)
-        cb->aio_result = errno;
-    else
-        cb->aio_result = len;
-    rt_hw_interrupt_enable(level);
-
-    return ;
-}
-
-/**
- * The aio_read() function shall read aiocbp->aio_nbytes from the file associated
- * with aiocbp->aio_fildes into the buffer pointed to by aiocbp->aio_buf. The
- * function call shall return when the read request has been initiated or queued
- * to the file or device (even when the data cannot be delivered immediately).
- *
- * If prioritized I/O is supported for this file, then the asynchronous operation
- * shall be submitted at a priority equal to a base scheduling priority minus
- * aiocbp->aio_reqprio. If Thread Execution Scheduling is not supported, then
- * the base scheduling priority is that of the calling process;
- *
- * otherwise, the base scheduling priority is that of the calling thread.
- *
- * The aiocbp value may be used as an argument to aio_error() and aio_return()
- * in order to determine the error status and return status, respectively, of
- * the asynchronous operation while it is proceeding. If an error condition is
- * encountered during queuing, the function call shall return without having
- * initiated or queued the request. The requested operation takes place at the
- * absolute position in the file as given by aio_offset, as if lseek() were called
- * immediately prior to the operation with an offset equal to aio_offset and a
- * whence equal to SEEK_SET. After a successful call to enqueue an asynchronous
- * I/O operation, the value of the file offset for the file is unspecified.
- *
- * The aio_sigevent member specifies the notification which occurs when the
- * request is completed.
- *
- * The aiocbp->aio_lio_opcode field shall be ignored by aio_read().
- *
- * The aiocbp argument points to an aiocb structure. If the buffer pointed to by
- * aiocbp->aio_buf or the control block pointed to by aiocbp becomes an illegal
- * address prior to asynchronous I/O completion, then the behavior is undefined.
- *
- * Simultaneous asynchronous operations using the same aiocbp produce undefined
- * results.
- *
- * If synchronized I/O is enabled on the file associated with aiocbp->aio_fildes,
- * the behavior of this function shall be according to the definitions of synchronized
- * I/O data integrity completion and synchronized I/O file integrity completion.
- *
- * For any system action that changes the process memory space while an asynchronous
- * I/O is outstanding to the address range being changed, the result of that action
- * is undefined.
- *
- * For regular files, no data transfer shall occur past the offset maximum
- * established in the open file description associated with aiocbp->aio_fildes.
- *
- */
-int aio_read(struct aiocb *cb)
-{
-    rt_ubase_t level;
-
-    if (!cb) return -EINVAL;
-    if (cb->aio_offset < 0) return -EINVAL;
-
-    level = rt_hw_interrupt_disable();
-    cb->aio_result = -EINPROGRESS;
-    rt_hw_interrupt_enable(level);
-
-    /* en-queue read work */
-    rt_work_init(&(cb->aio_work), aio_read_work, cb);
-    rt_workqueue_dowork(aio_queue, &(cb->aio_work));
-
-    return 0;
-}
-
-/**
- * The aio_return() function shall return the return status associated with the
- * aiocb structure referenced by the aiocbp argument. The return status for an
- * asynchronous I/O operation is the value that would be returned by the corresponding
- * read(), write(), or fsync() function call. If the error status for the operation
- * is equal to [EINPROGRESS], then the return status for the operation is undefined.
- * The aio_return() function may be called exactly once to retrieve the return
- * status of a given asynchronous operation; thereafter, if the same aiocb structure
- * is used in a call to aio_return() or aio_error(), an error may be returned.
- * When the aiocb structure referred to by aiocbp is used to submit another asynchronous
- * operation, then aio_return() may be successfully used to retrieve the return
- * status of that operation.
- */
-ssize_t  aio_return(struct aiocb *cb)
-{
-    if (cb)
-    {
-        if (cb->aio_result < 0)
-            rt_set_errno(cb->aio_result);
-
-        return cb->aio_result;
-    }
-
-    return -EINVAL;
-}
-
-/**
- * The aio_suspend() function shall suspend the calling thread until at least
- * one of the asynchronous I/O operations referenced by the list argument has
- * completed, until a signal interrupts the function, or, if timeout is not NULL,
- * until the time interval specified by timeout has passed. If any of the aiocb
- * structures in the list correspond to completed asynchronous I/O operations
- * (that is, the error status for the operation is not equal to [EINPROGRESS])
- * at the time of the call, the function shall return without suspending the
- * calling thread. The list argument is an array of pointers to asynchronous I/O
- * control blocks. The nent argument indicates the number of elements in the
- * array. Each aiocb structure pointed to has been used in initiating an asynchronous
- * I/O request via aio_read(), aio_write(), or lio_listio(). This array may
- * contain null pointers, which are ignored. If this array contains pointers
- * that refer to aiocb structures that have not been used in submitting asynchronous
- * I/O, the effect is undefined.
- *
- * If the time interval indicated in the timespec structure pointed to by timeout
- * passes before any of the I/O operations referenced by list are completed, then
- * aio_suspend() shall return with an error.
- */
-int aio_suspend(const struct aiocb *const list[], int nent,
-             const struct timespec *timeout)
-{
-    return -ENOSYS;
-}
-
-static void aio_write_work(struct rt_work* work, void* work_data)
-{
-    int len, oflags, level;
-    uint8_t *buf_ptr;
-    struct aiocb *cb = (struct aiocb*)work_data;
-
-    buf_ptr = (uint8_t*)cb->aio_buf;
-
-    /* whether seek offset */
-    oflags = fcntl(cb->aio_fildes, F_GETFL, 0);
-    if ((oflags & O_APPEND) == 0)
-    {
-        lseek(cb->aio_fildes, SEEK_SET, cb->aio_offset);
-    }
-
-    /* write data */
-    len = write(cb->aio_fildes, buf_ptr, cb->aio_nbytes);
-
-    /* modify result */
-    level = rt_hw_interrupt_disable();
-    if (len <= 0)
-        cb->aio_result = errno;
-    else
-        cb->aio_result = len;
-    rt_hw_interrupt_enable(level);
-
-    return;
-}
-
-/**
- * The aio_write() function shall write aiocbp->aio_nbytes to the file associated
- * with aiocbp->aio_fildes from the buffer pointed to by aiocbp->aio_buf. The
- * function shall return when the write request has been initiated or, at a minimum,
- * queued to the file or device.
- *
- * The aiocbp argument may be used as an argument to aio_error() and aio_return()
- * in order to determine the error status and return status, respectively, of the
- * asynchronous operation while it is proceeding.
- *
- * The aiocbp argument points to an aiocb structure. If the buffer pointed to by
- * aiocbp->aio_buf or the control block pointed to by aiocbp becomes an illegal
- * address prior to asynchronous I/O completion, then the behavior is undefined.
- *
- * If O_APPEND is not set for the file descriptor aio_fildes, then the requested
- * operation shall take place at the absolute position in the file as given by
- * aio_offset, as if lseek() were called immediately prior to the operation with
- * an offset equal to aio_offset and a whence equal to SEEK_SET. If O_APPEND is
- * set for the file descriptor, or if aio_fildes is associated with a device that
- * is incapable of seeking, write operations append to the file in the same order
- * as the calls were made, except under circumstances described in Asynchronous
- * I/O. After a successful call to enqueue an asynchronous I/O operation, the value
- * of the file offset for the file is unspecified.
- *
- * The aio_sigevent member specifies the notification which occurs when the request
- * is completed.
- *
- * The aiocbp->aio_lio_opcode field shall be ignored by aio_write().
- *
- * Simultaneous asynchronous operations using the same aiocbp produce undefined
- * results.
- *
- * If synchronized I/O is enabled on the file associated with aiocbp->aio_fildes,
- * the behavior of this function shall be according to the definitions of synchronized
- * I/O data integrity completion, and synchronized I/O file integrity completion.
- *
- * For regular files, no data transfer shall occur past the offset maximum established
- * in the open file description associated with aiocbp->aio_fildes.
- */
-int aio_write(struct aiocb *cb)
-{
-    int oflags;
-    rt_ubase_t level;
-
-    if (!cb || (cb->aio_buf == NULL)) return -EINVAL;
-
-    /* check access mode */
-    oflags = fcntl(cb->aio_fildes, F_GETFL, 0);
-    if ((oflags & O_ACCMODE) != O_WRONLY ||
-        (oflags & O_ACCMODE) != O_RDWR)
-        return -EINVAL;
-
-    level = rt_hw_interrupt_disable();
-    cb->aio_result = -EINPROGRESS;
-    rt_hw_interrupt_enable(level);
-
-    rt_work_init(&(cb->aio_work), aio_write_work, cb);
-    rt_workqueue_dowork(aio_queue, &(cb->aio_work));
-
-    return 0;
-}
-
-/**
- * The lio_listio() function shall initiate a list of I/O requests with a single
- * function call.
- *
- * The mode argument takes one of the values LIO_WAIT or LIO_NOWAIT declared in
- * <aio.h> and determines whether the function returns when the I/O operations
- * have been completed, or as soon as the operations have been queued. If the
- * mode argument is LIO_WAIT, the function shall wait until all I/O is complete
- * and the sig argument shall be ignored.
- *
- * If the mode argument is LIO_NOWAIT, the function shall return immediately, and
- * asynchronous notification shall occur, according to the sig argument, when all
- * the I/O operations complete. If sig is NULL, then no asynchronous notification
- * shall occur. If sig is not NULL, asynchronous notification occurs as specified
- * in Signal Generation and Delivery when all the requests in list have completed.
- *
- * The I/O requests enumerated by list are submitted in an unspecified order.
- *
- * The list argument is an array of pointers to aiocb structures. The array contains
- * nent elements. The array may contain NULL elements, which shall be ignored.
- *
- * If the buffer pointed to by list or the aiocb structures pointed to by the
- * elements of the array list become illegal addresses before all asynchronous I/O
- * completed and, if necessary, the notification is sent, then the behavior is
- * undefined. If the buffers pointed to by the aio_buf member of the aiocb structure
- * pointed to by the elements of the array list become illegal addresses prior to
- * the asynchronous I/O associated with that aiocb structure being completed, the
- * behavior is undefined.
- *
- * The aio_lio_opcode field of each aiocb structure specifies the operation to be
- * performed. The supported operations are LIO_READ, LIO_WRITE, and LIO_NOP; these
- * symbols are defined in <aio.h>. The LIO_NOP operation causes the list entry to
- * be ignored. If the aio_lio_opcode element is equal to LIO_READ, then an I/O operation
- * is submitted as if by a call to aio_read() with the aiocbp equal to the address
- * of the aiocb structure. If the aio_lio_opcode element is equal to LIO_WRITE, then
- * an I/O operation is submitted as if by a call to aio_write() with the aiocbp equal
- * to the address of the aiocb structure.
- *
- * The aio_fildes member specifies the file descriptor on which the operation is to
- * be performed.
- *
- * The aio_buf member specifies the address of the buffer to or from which the data
- * is transferred.
- *
- * The aio_nbytes member specifies the number of bytes of data to be transferred.
- *
- * The members of the aiocb structure further describe the I/O operation to be
- * performed, in a manner identical to that of the corresponding aiocb structure
- * when used by the aio_read() and aio_write() functions.
- *
- * The nent argument specifies how many elements are members of the list; that is,
- * the length of the array.
- *
- * The behavior of this function is altered according to the definitions of synchronized
- * I/O data integrity completion and synchronized I/O file integrity completion if
- * synchronized I/O is enabled on the file associated with aio_fildes.
- *
- * For regular files, no data transfer shall occur past the offset maximum established
- * in the open file description associated with aiocbp->aio_fildes.
- *
- * If sig->sigev_notify is SIGEV_THREAD and sig->sigev_notify_attributes is a
- * non-null pointer and the block pointed to by this pointer becomes an illegal
- * address prior to all asynchronous I/O being completed, then the behavior is
- * undefined.
- */
-int lio_listio(int mode, struct aiocb * const list[], int nent,
-            struct sigevent *sig)
-{
-    return -ENOSYS;
-}
-
-int aio_system_init(void)
-{
-    aio_queue = rt_workqueue_create("aio", 2048, RT_THREAD_PRIORITY_MAX/2);
-    RT_ASSERT(aio_queue != NULL);
-
-    return 0;
-}
-INIT_COMPONENT_EXPORT(aio_system_init);
diff --git a/components/libc/aio/posix_aio.h b/components/libc/aio/posix_aio.h
deleted file mode 100644
index 4e25e1d15b..0000000000
--- a/components/libc/aio/posix_aio.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017/12/30     Bernard      The first version.
- */
-
-#ifndef POSIX_AIO_H__
-#define POSIX_AIO_H__
-
-#include <stdio.h>
-#include <sys/signal.h>
-#include <rtdevice.h>
-
-struct aiocb
-{
-    int aio_fildes;         /* File descriptor. */
-    off_t aio_offset;       /* File offset. */
-
-    volatile void *aio_buf; /* Location of buffer. */
-    size_t aio_nbytes;      /* Length of transfer. */
-    int aio_reqprio;        /* Request priority offset. */
-    struct sigevent aio_sigevent; /* Signal number and value. */
-    int aio_lio_opcode;     /* Operation to be performed. */
-
-    int aio_result;
-    struct rt_work aio_work;
-};
-
-int aio_cancel(int fd, struct aiocb *cb);
-int aio_error (const struct aiocb *cb);
-
-int aio_fsync(int op, struct aiocb *cb);
-
-int aio_read(struct aiocb *cb);
-ssize_t  aio_return(struct aiocb *cb);
-int aio_suspend(const struct aiocb *const list[], int nent,
-             const struct timespec *timeout);
-int aio_write(struct aiocb *cb);
-
-int lio_listio(int mode, struct aiocb * const list[], int nent,
-            struct sigevent *sig);
-
-#endif