void
exitSection(int id)
{
// LEAVE THESE STATEMENTS
int isFemale = femaleOnly ? 1 : (id % 2 == 0);
// TODO: Complete this function
if (isFemale) {
mutexLock(id, &femaleCountMutex);
//pthread_mutex_lock(&femaleCountMutex);
femaleCount--;
if (femaleCount == 0) {
// sem_post(&male);
semPost(id, &male);
}
mutexUnlock(id, &femaleCountMutex);
//pthread_mutex_unlock(&femaleCountMutex);
}
else {
mutexLock(id, &maleCountMutex);
//pthread_mutex_lock(&maleCountMutex);
maleCount--;
if (maleCount == 0) {
// sem_post(&female);
semPost(id, &female);
}
mutexUnlock(id, &maleCountMutex);
//pthread_mutex_unlock(&maleCountMutex);
}
}
off_t lseek(int fid, off_t offset, int whence)
{
off_t rc;
FILE *file;
#if OS_PARM_CHECK
/*-------------------------------------------------------------------*/
/* If the file descriptor is invalid, return error. */
/*-------------------------------------------------------------------*/
if (fid < 0 || fid >= FOPEN_MAX)
{
set_errno(EBADF);
return -1;
}
if (Files[fid].flags & FCB_DIR)
{
set_errno(EISDIR);
return -1;
}
#endif
/*-------------------------------------------------------------------*/
/* Get exclusive access to upper file system. */
/*-------------------------------------------------------------------*/
semPend(FileSysSem, WAIT_FOREVER);
/*-------------------------------------------------------------------*/
/* Return error if file is closed. */
/*-------------------------------------------------------------------*/
file = &Files[fid];
if (file->ioctl == NULL)
{
set_errno(EBADF);
semPost(FileSysSem);
return -1;
}
/*-------------------------------------------------------------------*/
/* Acquire exclusive access to lower file system. */
/*-------------------------------------------------------------------*/
file->acquire(file, F_READ | F_WRITE);
/*-------------------------------------------------------------------*/
/* Call file system specific FSEEK routine. */
/*-------------------------------------------------------------------*/
rc = (off_t)file->ioctl(file, FSEEK, (long)offset, whence);
/*-------------------------------------------------------------------*/
/* Release exclusive access to file systems and return result. */
/*-------------------------------------------------------------------*/
file->release(file, F_READ | F_WRITE);
semPost(FileSysSem);
return rc;
}
//------------------------------------------------------------------------------
void WorkerThread::process(unsigned int count, const char * const *arguments,
Shell::ShellContext *context)
{
baseContext = context;
argumentCount = count;
firstArgument = arguments;
semPost(&semaphore);
}
//------------------------------------------------------------------------------
void ThreadSwarm::onCommandCompleted(WorkerThread *worker, result res)
{
mutexLock(&queueLock);
pool.push(worker);
results.push(res);
mutexUnlock(&queueLock);
semPost(&queueSynchronizer);
}
void MyQueue::enqueue(AsyncCallState* state) {
state->nextInQueue = NULL;
lockMutex(&queueMutex);
if (tail == NULL) {
head = state;
} else {
tail->nextInQueue = state;
}
tail = state;
unlockMutex(&queueMutex);
semPost(&queueSem);
}
int fcntl(int fid, int cmd, ...)
{
va_list ap;
FILE *file;
#if OS_PARM_CHECK
/*-------------------------------------------------------------------*/
/* If the file descriptor is invalid, return error. */
/*-------------------------------------------------------------------*/
if (fid < 0 || fid >= FOPEN_MAX)
{
set_errno(EBADF);
return -1;
}
#endif
/*-------------------------------------------------------------------*/
/* Get exclusive access to upper file system. */
/*-------------------------------------------------------------------*/
semPend(FileSysSem, WAIT_FOREVER);
/*-------------------------------------------------------------------*/
/* Return error if file is closed. */
/*-------------------------------------------------------------------*/
file = &Files[fid];
if (file->ioctl == NULL)
{
semPost(FileSysSem);
set_errno(EBADF);
return -1;
}
/*-------------------------------------------------------------------*/
/* Based on the command, execute the right instructions. */
/*-------------------------------------------------------------------*/
switch (cmd)
{
case F_DUPFD:
{
/*---------------------------------------------------------------*/
/* Use the va_arg mechanism to get the argument. */
/*---------------------------------------------------------------*/
va_start(ap, cmd);
fid = va_arg(ap, int);
va_end(ap);
#if OS_PARM_CHECK
/*---------------------------------------------------------------*/
/* If the file descriptor is invalid, return error. */
/*---------------------------------------------------------------*/
if (fid < 0 || fid >= FOPEN_MAX)
{
semPost(FileSysSem);
set_errno(EINVAL);
return -1;
}
#endif
/*---------------------------------------------------------------*/
/* Look for free file control block identifier >= fid. */
/*---------------------------------------------------------------*/
for (;;)
{
FILE *file2 = &Files[fid];
/*-------------------------------------------------------------*/
/* Check if file control block is free. */
/*-------------------------------------------------------------*/
if (file2->ioctl == NULL)
{
/*-----------------------------------------------------------*/
/* Copy previous file control block to new one. */
/*-----------------------------------------------------------*/
*file2 = *file;
/*-----------------------------------------------------------*/
/* Acquire exclusive access to lower file system. */
/*-----------------------------------------------------------*/
file2->acquire(file2, F_READ | F_WRITE);
/*-----------------------------------------------------------*/
/* Call file system specific DUP routine. */
/*-----------------------------------------------------------*/
file2->ioctl(file2, DUP);
/*-----------------------------------------------------------*/
/* Release exclusive access to lower file system. */
/*-----------------------------------------------------------*/
file2->release(file2, F_READ | F_WRITE);
break;
}
/*-------------------------------------------------------------*/
/* If none are free, set errno and break. */
/*-------------------------------------------------------------*/
if (++fid >= FOPEN_MAX)
{
set_errno(EMFILE);
fid = -1;
break;
}
}
/*---------------------------------------------------------------*/
/* Release access to upper file system and return result. */
/*---------------------------------------------------------------*/
semPost(FileSysSem);
return fid;
}
case F_SETFL:
{
int oflag, r_val;
/*---------------------------------------------------------------*/
/* Acquire exclusive access to lower file system. */
/*---------------------------------------------------------------*/
file->acquire(file, F_READ | F_WRITE);
/*---------------------------------------------------------------*/
/* Use the va_arg mechanism to get the argument. */
/*---------------------------------------------------------------*/
va_start(ap, cmd);
oflag = va_arg(ap, int);
va_end(ap);
/*---------------------------------------------------------------*/
/* Call specific ioctl to set flag. */
/*---------------------------------------------------------------*/
r_val = (int)file->ioctl(file, SET_FL, oflag);
/*---------------------------------------------------------------*/
/* Release exclusive access to lower file system. */
/*---------------------------------------------------------------*/
file->release(file, F_READ | F_WRITE);
/*---------------------------------------------------------------*/
/* Release access to upper file system and return result. */
/*---------------------------------------------------------------*/
semPost(FileSysSem);
return r_val;
}
case F_GETFL:
{
int r_val;
/*---------------------------------------------------------------*/
/* Acquire exclusive access to lower file system. */
/*---------------------------------------------------------------*/
file->acquire(file, F_READ);
/*---------------------------------------------------------------*/
/* Call specific ioctl to get flag. */
/*---------------------------------------------------------------*/
r_val = (int)file->ioctl(file, GET_FL);
/*---------------------------------------------------------------*/
/* Release exclusive access to lower file system. */
/*---------------------------------------------------------------*/
file->release(file, F_READ);
/*---------------------------------------------------------------*/
/* Release access to upper file system and return result. */
/*---------------------------------------------------------------*/
semPost(FileSysSem);
return r_val;
}
}
/*-------------------------------------------------------------------*/
/* An unsupported command was requested. */
/*-------------------------------------------------------------------*/
set_errno(EINVAL);
semPost(FileSysSem);
return -1;
}
//------------------------------------------------------------------------------
result ThreadSwarm::run(unsigned int count, const char * const *arguments,
Shell::ShellContext *context)
{
bool help = false;
for (unsigned int i = 0; i < count; ++i)
{
if (!strcmp(arguments[i], "--help"))
{
help = true;
continue;
}
}
if (help)
{
owner.log("Usage: swarm COMMAND ! COMMAND...");
owner.log(" --help print help message");
return E_OK;
}
unsigned int index = 0;
result res = E_OK;
while (index < count)
{
const unsigned int first = index;
while (index < count && strcmp(arguments[index], "!"))
++index;
if (index > first)
{
semWait(&queueSynchronizer);
mutexLock(&queueLock);
while (!results.empty())
{
res = results.front();
results.pop();
if (res != E_OK)
break;
}
if (res != E_OK)
{
semPost(&queueSynchronizer);
break;
}
WorkerThread * const thread = pool.front();
pool.pop();
mutexUnlock(&queueLock);
thread->process(index - first, arguments + first, context);
}
++index;
}
//Wait for commands to complete
for (index = 0; index < THREAD_COUNT; ++index)
semWait(&queueSynchronizer);
//Release acquired resources
for (index = 0; index < THREAD_COUNT; ++index)
semPost(&queueSynchronizer);
//Clear result queue
while (!results.empty())
{
if (res == E_OK)
res = results.front();
results.pop();
}
return res;
}
//------------------------------------------------------------------------------
void WorkerThread::terminate()
{
finalize = true;
semPost(&semaphore);
}
int enable_sync(const char *path)
{
FileSys *fsys;
int rv = -1;
#if !_PATH_NO_TRUNC
char trunc_path[PATH_MAX + 1];
#endif
#if OS_PARM_CHECK
/*-------------------------------------------------------------------*/
/* Check that both path and buf are valid parameters. */
/*-------------------------------------------------------------------*/
if (path == NULL)
{
set_errno(EFAULT);
return -1;
}
#endif
/*-------------------------------------------------------------------*/
/* If path too long, return error if no truncation, else truncate. */
/*-------------------------------------------------------------------*/
if (strlen(path) > PATH_MAX)
{
#if _PATH_NO_TRUNC
set_errno(ENAMETOOLONG);
return -1;
#else
strncpy(trunc_path, path, PATH_MAX);
trunc_path[PATH_MAX] = '\0';
path = trunc_path;
#endif
}
/*-------------------------------------------------------------------*/
/* Acquire exclusive access to upper file system. */
/*-------------------------------------------------------------------*/
semPend(FileSysSem, WAIT_FOREVER);
/*-------------------------------------------------------------------*/
/* Check that 'path' is the name of a mounted volume. */
/*-------------------------------------------------------------------*/
for (fsys = MountedList.head;; fsys = fsys->next)
{
/*-----------------------------------------------------------------*/
/* If the volume is not mounted, return error. */
/*-----------------------------------------------------------------*/
if (fsys == NULL)
{
set_errno(ENOENT);
goto end;
}
/*-----------------------------------------------------------------*/
/* If the volume was found, stop looking. */
/*-----------------------------------------------------------------*/
if (!strcmp(fsys->name, path))
break;
}
/*-------------------------------------------------------------------*/
/* Call file system specific ENABLE_SYNC routine. */
/*-------------------------------------------------------------------*/
rv = (int)fsys->ioctl(NULL, ENABLE_SYNC, fsys->volume);
/*-------------------------------------------------------------------*/
/* Release exclusive access to upper file system and return. */
/*-------------------------------------------------------------------*/
end:
semPost(FileSysSem);
return rv;
}
int mount(const char *path)
{
Module fp;
FileSys *fsys;
int i, rv = -1;
char *name;
#if !_PATH_NO_TRUNC
char trunc_path[PATH_MAX + 1];
#endif
#if OS_PARM_CHECK
/*-------------------------------------------------------------------*/
/* If path is NULL, return -1. */
/*-------------------------------------------------------------------*/
if (path == NULL)
{
set_errno(EFAULT);
return -1;
}
#endif
/*-------------------------------------------------------------------*/
/* Strip leading '\' or '/'. */
/*-------------------------------------------------------------------*/
if (*path == '/' || *path == '\\')
++path;
/*-------------------------------------------------------------------*/
/* If path too long, return error if no truncation, else truncate. */
/*-------------------------------------------------------------------*/
if (strlen(path) > PATH_MAX)
{
#if _PATH_NO_TRUNC
set_errno(ENAMETOOLONG);
return -1;
#else
strncpy(trunc_path, path, PATH_MAX);
trunc_path[PATH_MAX] = '\0';
path = trunc_path;
#endif
}
/*-------------------------------------------------------------------*/
/* Get exclusive access to file system. */
/*-------------------------------------------------------------------*/
semPend(FileSysSem, WAIT_FOREVER);
/*-------------------------------------------------------------------*/
/* If there is a name duplication, return error. */
/*-------------------------------------------------------------------*/
for (fsys = MountedList.head; fsys; fsys = fsys->next)
if (!strcmp(fsys->name, path))
{
set_errno(EEXIST);
goto end;
}
/*-------------------------------------------------------------------*/
/* Go through the module list and have the corresponding module */
/* perform the actual mount. The module should be able to recognize */
/* the name of the device to be mounted. */
/*-------------------------------------------------------------------*/
for (i = 0;; ++i)
{
fp = ModuleList[i];
/*-----------------------------------------------------------------*/
/* If device is not found, return error. */
/*-----------------------------------------------------------------*/
if (!fp)
{
set_errno(ENOENT);
goto end;
}
/*-----------------------------------------------------------------*/
/* If module finds the device, stop with error if mount fails, */
/* else stop successfully. */
/*-----------------------------------------------------------------*/
fsys = fp(kMount, path, &name, FALSE);
if (fsys == (FileSys *)-1)
goto end;
else if (fsys)
break;
}
/*-------------------------------------------------------------------*/
/* Add device to list of mounted devices. */
/*-------------------------------------------------------------------*/
if (MountedList.head)
{
fsys->prev = MountedList.tail;
MountedList.tail->next = fsys;
}
else
{
fsys->prev = NULL;
MountedList.head = fsys;
}
fsys->next = NULL;
MountedList.tail = fsys;
rv = 0;
/*-------------------------------------------------------------------*/
/* Release exclusive access to upper file system and return. */
/*-------------------------------------------------------------------*/
end:
semPost(FileSysSem);
return rv;
}
DIR *opendir(const char *dirname)
{
DIR *dir;
void *ptr;
#if OS_PARM_CHECK
/*-------------------------------------------------------------------*/
/* If path is NULL, return NULL. */
/*-------------------------------------------------------------------*/
if (dirname == NULL)
{
set_errno(ENOTDIR);
return NULL;
}
#endif
/*-------------------------------------------------------------------*/
/* Acquire exclusive access to upper file system. */
/*-------------------------------------------------------------------*/
semPend(FileSysSem, WAIT_FOREVER);
/*-------------------------------------------------------------------*/
/* Find a free file control block and initialize it. */
/*-------------------------------------------------------------------*/
for (dir = &Files[0]; dir->ioctl; ++dir)
{
/*-----------------------------------------------------------------*/
/* If no DIR was found, return error. */
/*-----------------------------------------------------------------*/
if (dir == &Files[DIROPEN_MAX - 1])
{
set_errno(ENOMEM);
semPost(FileSysSem);
return NULL;
}
}
FsInitFCB(dir, FCB_DIR);
/*-------------------------------------------------------------------*/
/* Ensure that path is valid and assign ioctl callback function. */
/*-------------------------------------------------------------------*/
ptr = FSearch(dir, &dirname, ACTUAL_DIR);
if (ptr == NULL)
{
dir->ioctl = NULL;
semPost(FileSysSem);
return NULL;
}
/*-------------------------------------------------------------------*/
/* Acquire exclusive access to lower file system. */
/*-------------------------------------------------------------------*/
dir->acquire(dir, F_READ | F_WRITE);
/*-------------------------------------------------------------------*/
/* Call file system specific OPENDIR routine. */
/*-------------------------------------------------------------------*/
ptr = dir->ioctl(dir, OPENDIR, ptr);
/*-------------------------------------------------------------------*/
/* Release exclusive access to lower file system. */
/*-------------------------------------------------------------------*/
dir->release(dir, F_READ | F_WRITE);
/*-------------------------------------------------------------------*/
/* Release file control block if an error occurred. */
/*-------------------------------------------------------------------*/
if (ptr == NULL)
dir->ioctl = NULL;
/*-------------------------------------------------------------------*/
/* Release upper file system access and return result. */
/*-------------------------------------------------------------------*/
semPost(FileSysSem);
return ptr;
}
int creatn(const char *path, mode_t mode, size_t size)
{
int rv = -1;
void *dir;
FILE *file;
#if !_PATH_NO_TRUNC
char trunc_path[PATH_MAX + 1];
#endif
#if OS_PARM_CHECK
/*-------------------------------------------------------------------*/
/* If path is NULL, return -1. */
/*-------------------------------------------------------------------*/
if (path == NULL)
{
set_errno(EFAULT);
return -1;
}
#endif
/*-------------------------------------------------------------------*/
/* Acquire exclusive access to upper file system. */
/*-------------------------------------------------------------------*/
semPend(FileSysSem, WAIT_FOREVER);
/*-------------------------------------------------------------------*/
/* Find a free file control block and initialize it. */
/*-------------------------------------------------------------------*/
for (file = &Files[0]; file->ioctl; ++file)
{
/*-----------------------------------------------------------------*/
/* If none are free, return error. */
/*-----------------------------------------------------------------*/
if (file == &Files[FOPEN_MAX - 1])
{
set_errno(EMFILE);
semPost(FileSysSem);
return -1;
}
}
FsInitFCB(file, FCB_FILE);
/*-------------------------------------------------------------------*/
/* Ensure path is valid. */
/*-------------------------------------------------------------------*/
dir = FSearch(file, &path, PARENT_DIR);
if (dir == NULL)
goto end;
/*-------------------------------------------------------------------*/
/* If path too long, return error if no truncation, else truncate. */
/*-------------------------------------------------------------------*/
if (strlen(path) > PATH_MAX)
{
#if _PATH_NO_TRUNC
set_errno(ENAMETOOLONG);
goto end;
#else
strncpy(trunc_path, path, PATH_MAX);
trunc_path[PATH_MAX] = '\0';
path = trunc_path;
#endif
}
/*-------------------------------------------------------------------*/
/* Acquire exclusive access to lower file system. */
/*-------------------------------------------------------------------*/
file->acquire(file, F_READ | F_WRITE);
/*-------------------------------------------------------------------*/
/* Call file system specific CREATN routine. */
/*-------------------------------------------------------------------*/
rv = (int)file->ioctl(file, CREATN, path, mode, size, dir);
/*-------------------------------------------------------------------*/
/* Release exclusive access to lower file system. */
/*-------------------------------------------------------------------*/
file->release(file, F_READ | F_WRITE);
/*-------------------------------------------------------------------*/
/* Free control block if error, else set return value. */
/*-------------------------------------------------------------------*/
end:
if (rv == -1)
file->ioctl = NULL;
else
rv = file - &Files[0];
/*-------------------------------------------------------------------*/
/* Release exclusive access to upper file system and return result. */
/*-------------------------------------------------------------------*/
semPost(FileSysSem);
return rv;
}
FILE *freopen(const char *filename, const char *mode, FILE *file)
{
void *dir;
FILE *rv = NULL;
#if !_PATH_NO_TRUNC
char trunc_filename[PATH_MAX + 1];
#endif
#if OS_PARM_CHECK
/*-------------------------------------------------------------------*/
/* If file handle is invalid, return NULL. */
/*-------------------------------------------------------------------*/
if (InvalidStream(file))
{
set_errno(EBADF);
return NULL;
}
/*-------------------------------------------------------------------*/
/* If file name is NULL, return NULL. */
/*-------------------------------------------------------------------*/
if (filename == NULL)
{
file->errcode = EINVAL;
set_errno(EINVAL);
return NULL;
}
#endif
/*-------------------------------------------------------------------*/
/* Get exclusive access to upper file system. */
/*-------------------------------------------------------------------*/
semPend(FileSysSem, WAIT_FOREVER);
/*-------------------------------------------------------------------*/
/* Flush and close the file, acquiring and releasing volume access. */
/*-------------------------------------------------------------------*/
file->acquire(file, F_READ | F_WRITE);
file->ioctl(file, FFLUSH);
file->ioctl(file, FCLOSE);
file->release(file, F_READ | F_WRITE);
/*-------------------------------------------------------------------*/
/* Verify path of new file. Error exit if path is invalid. */
/*-------------------------------------------------------------------*/
dir = FSearch(file, &filename, PARENT_DIR);
if (dir == NULL)
goto end;
/*-------------------------------------------------------------------*/
/* If path too long, return error if no truncation, else truncate. */
/*-------------------------------------------------------------------*/
if (strlen(filename) > PATH_MAX)
{
#if _PATH_NO_TRUNC
set_errno(ENAMETOOLONG);
goto end;
#else
strncpy(trunc_filename, filename, PATH_MAX);
trunc_filename[PATH_MAX] = '\0';
filename = trunc_filename;
#endif
}
/*-------------------------------------------------------------------*/
/* Open the file, acquiring and releasing volume access. */
/*-------------------------------------------------------------------*/
file->acquire(file, F_READ | F_WRITE);
rv = file->ioctl(file, FOPEN, filename, mode, dir);
file->release(file, F_READ | F_WRITE);
end:
/*-------------------------------------------------------------------*/
/* Free control block if error. Release access to upper file system. */
/*-------------------------------------------------------------------*/
if (rv == NULL)
file->ioctl = NULL;
semPost(FileSysSem);
return rv;
}
int mkdir(const char *path, mode_t mode)
{
void *parent;
int r_value = -1;
DIR dir;
#if !_PATH_NO_TRUNC
char trunc_path[PATH_MAX + 1];
#endif
#if OS_PARM_CHECK
/*-------------------------------------------------------------------*/
/* If path is NULL, return -1. */
/*-------------------------------------------------------------------*/
if (path == NULL)
{
set_errno(EFAULT);
return -1;
}
#endif
/*-------------------------------------------------------------------*/
/* Initialize temporary file control block. */
/*-------------------------------------------------------------------*/
FsInitFCB(&dir, FCB_DIR);
/*-------------------------------------------------------------------*/
/* Get exclusive access to the file system. */
/*-------------------------------------------------------------------*/
semPend(FileSysSem, WAIT_FOREVER);
/*-------------------------------------------------------------------*/
/* Ensure that path is valid. */
/*-------------------------------------------------------------------*/
parent = FSearch(&dir, &path, PARENT_DIR);
if (parent == NULL)
goto end;
/*-------------------------------------------------------------------*/
/* If path too long, return error if no truncation, else truncate. */
/*-------------------------------------------------------------------*/
if (strlen(path) > PATH_MAX)
{
#if _PATH_NO_TRUNC
set_errno(ENAMETOOLONG);
goto end;
#else
strncpy(trunc_path, path, PATH_MAX);
trunc_path[PATH_MAX] = '\0';
path = trunc_path;
#endif
}
/*-------------------------------------------------------------------*/
/* Acquire exclusive access to lower file system. */
/*-------------------------------------------------------------------*/
dir.acquire(&dir, F_READ | F_WRITE);
/*-------------------------------------------------------------------*/
/* Call file system specific MKDIR routine. */
/*-------------------------------------------------------------------*/
r_value = (int)dir.ioctl(&dir, MKDIR, path, mode, parent, 0, 0);
/*-------------------------------------------------------------------*/
/* Release exclusive access to file systems and return result. */
/*-------------------------------------------------------------------*/
dir.release(&dir, F_READ | F_WRITE);
end:
semPost(FileSysSem);
return r_value;
}
int fflush(FILE *file)
{
int rv = 0;
/*-------------------------------------------------------------------*/
/* Acquire exclusive access to upper file system. */
/*-------------------------------------------------------------------*/
semPend(FileSysSem, WAIT_FOREVER);
/*-------------------------------------------------------------------*/
/* If file is not NULL, flush just the specified file. */
/*-------------------------------------------------------------------*/
if (file)
{
#if OS_PARM_CHECK
/*-----------------------------------------------------------------*/
/* Return error if file handle is invalid. */
/*-----------------------------------------------------------------*/
if (InvalidStream(file))
{
set_errno(EBADF);
semPost(FileSysSem);
return EOF;
}
#endif
/*-----------------------------------------------------------------*/
/* Return error if file is closed. */
/*-----------------------------------------------------------------*/
if (file->ioctl == NULL)
{
set_errno(EBADF);
semPost(FileSysSem);
return EOF;
}
/*-----------------------------------------------------------------*/
/* Acquire exclusive access to stream. */
/*-----------------------------------------------------------------*/
file->acquire(file, F_WRITE);
/*-----------------------------------------------------------------*/
/* Call file system specific FFLUSH routine. */
/*-----------------------------------------------------------------*/
rv = (int)file->ioctl(file, FFLUSH);
/*-----------------------------------------------------------------*/
/* Release exclusive access to stream. */
/*-----------------------------------------------------------------*/
file->release(file, F_WRITE);
}
/*-------------------------------------------------------------------*/
/* Else flush all open files. */
/*-------------------------------------------------------------------*/
else
{
/*-----------------------------------------------------------------*/
/* Loop over every file. */
/*-----------------------------------------------------------------*/
for (file = &Files[0]; file < &Files[FOPEN_MAX]; ++file)
{
/*---------------------------------------------------------------*/
/* Check if file is open. */
/*---------------------------------------------------------------*/
if (file->ioctl)
{
/*-------------------------------------------------------------*/
/* Acquire exclusive write access to lower file system. */
/*-------------------------------------------------------------*/
file->acquire(file, F_WRITE);
/*-------------------------------------------------------------*/
/* If any flush fails, set return value to -1. */
/*-------------------------------------------------------------*/
if (file->ioctl(file, FFLUSH))
rv = EOF;
/*-------------------------------------------------------------*/
/* Release exclusive write access to lower file system. */
/*-------------------------------------------------------------*/
file->release(file, F_WRITE);
}
}
}
/*-------------------------------------------------------------------*/
/* Release exclusive access to upper file system and return result. */
/*-------------------------------------------------------------------*/
semPost(FileSysSem);
return rv;
}