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diff --git a/doc/posix_users/io.t b/doc/posix_users/io.t deleted file mode 100644 index 143d174d13..0000000000 --- a/doc/posix_users/io.t +++ /dev/null @@ -1,1274 +0,0 @@ -@c -@c COPYRIGHT (c) 1988-2002. -@c On-Line Applications Research Corporation (OAR). -@c All rights reserved. - -@chapter Input and Output Primitives Manager - -@section Introduction - -The input and output primitives manager is ... - -The directives provided by the input and output primitives manager are: - -@itemize @bullet -@item @code{pipe} - Create an Inter-Process Channel -@item @code{dup} - Duplicates an open file descriptor -@item @code{dup2} - Duplicates an open file descriptor -@item @code{close} - Closes a file -@item @code{read} - Reads from a file -@item @code{write} - Writes to a file -@item @code{fcntl} - Manipulates an open file descriptor -@item @code{lseek} - Reposition read/write file offset -@item @code{fsync} - Synchronize file complete in-core state with that on disk -@item @code{fdatasync} - Synchronize file in-core data with that on disk -@item @code{sync} - Schedule file system updates -@item @code{mount} - Mount a file system -@item @code{unmount} - Unmount file systems -@item @code{readv} - Vectored read from a file -@item @code{writev} - Vectored write to a file -@item @code{aio_read} - Asynchronous Read -@item @code{aio_write} - Asynchronous Write -@item @code{lio_listio} - List Directed I/O -@item @code{aio_error} - Retrieve Error Status of Asynchronous I/O Operation -@item @code{aio_return} - Retrieve Return Status Asynchronous I/O Operation -@item @code{aio_cancel} - Cancel Asynchronous I/O Request -@item @code{aio_suspend} - Wait for Asynchronous I/O Request -@item @code{aio_fsync} - Asynchronous File Synchronization -@end itemize - -@section Background - -There is currently no text in this section. - -@section Operations - -There is currently no text in this section. - -@section Directives - -This section details the input and output primitives manager's directives. -A subsection is dedicated to each of this manager's directives -and describes the calling sequence, related constants, usage, -and status codes. - -@c -@c -@c -@page -@subsection pipe - Create an Inter-Process Channel - -@findex pipe -@cindex create an inter - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int pipe( -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item E -The - -@end table - -@subheading DESCRIPTION: - -@subheading NOTES: - -This routine is not currently supported by RTEMS but could be -in a future version. - -@c -@c -@c -@page -@subsection dup - Duplicates an open file descriptor - -@findex dup -@cindex duplicates an open file descriptor - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <unistd.h> - -int dup( - int fildes -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item EBADF -Invalid file descriptor. - -@item EINTR -Function was interrupted by a signal. - -@item EMFILE -The process already has the maximum number of file descriptors open -and tried to open a new one. -@end table - -@subheading DESCRIPTION: - -The @code{dup} function returns the lowest numbered available file -descriptor. This new desciptor refers to the same open file as the -original descriptor and shares any locks. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection dup2 - Duplicates an open file descriptor - -@findex dup2 -@cindex duplicates an open file descriptor - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <unistd.h> - -int dup2( - int fildes, - int fildes2 -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item EBADF -Invalid file descriptor. - -@item EINTR -Function was interrupted by a signal. - -@item EMFILE -The process already has the maximum number of file descriptors open -and tried to open a new one. -@end table - -@subheading DESCRIPTION: - -@code{dup2} creates a copy of the file descriptor @code{oldfd}. - -The old and new descriptors may be used interchangeably. They share locks, file -position pointers and flags; for example, if the file position is modified by using -@code{lseek} on one of the descriptors, the position is also changed for the other. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection close - Closes a file - -@findex close -@cindex closes a file. - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <unistd.h> - -int close( - int fildes -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item EBADF -Invalid file descriptor - -@item EINTR -Function was interrupted by a signal. -@end table - -@subheading DESCRIPTION: - -The @code{close()} function deallocates the file descriptor named by -@code{fildes} and makes it available for reuse. All outstanding -record locks owned by this process for the file are unlocked. - -@subheading NOTES: - -A signal can interrupt the @code{close()} function. In that case, -@code{close()} returns -1 with @code{errno} set to EINTR. The file -may or may not be closed. - -@c -@c -@c -@page -@subsection read - Reads from a file - -@findex read -@cindex reads from a file - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <unistd.h> - -int read( - int fildes, - void *buf, - unsigned int nbyte -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -On error, this routine returns -1 and sets @code{errno} to one of -the following: - -@table @b -@item EAGAIN -The O_NONBLOCK flag is set for a file descriptor and the process -would be delayed in the I/O operation. - -@item EBADF -Invalid file descriptor - -@item EINTR -Function was interrupted by a signal. - -@item EIO -Input or output error - -@item EINVAL -Bad buffer pointer - -@end table - -@subheading DESCRIPTION: - -The @code{read()} function reads @code{nbyte} bytes from the file -associated with @code{fildes} into the buffer pointed to by @code{buf}. - -The @code{read()} function returns the number of bytes actually read -and placed in the buffer. This will be less than @code{nbyte} if: - -@itemize @bullet - -@item The number of bytes left in the file is less than @code{nbyte}. - -@item The @code{read()} request was interrupted by a signal. - -@item The file is a pipe or FIFO or special file with less than @code{nbytes} -immediately available for reading. - -@end itemize - -When attempting to read from any empty pipe or FIFO: - - -@itemize @bullet - -@item If no process has the pipe open for writing, zero is returned to -indicate end-of-file. - -@item If some process has the pipe open for writing and O_NONBLOCK is set, --1 is returned and @code{errno} is set to EAGAIN. - -@item If some process has the pipe open for writing and O_NONBLOCK is clear, -@code{read()} waits for some data to be written or the pipe to be closed. - -@end itemize - - -When attempting to read from a file other than a pipe or FIFO and no data -is available. - -@itemize @bullet - -@item If O_NONBLOCK is set, -1 is returned and @code{errno} is set to EAGAIN. - -@item If O_NONBLOCK is clear, @code{read()} waits for some data to become -available. - -@item The O_NONBLOCK flag is ignored if data is available. - -@end itemize - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection write - Writes to a file - -@findex write -@cindex writes to a file - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <unistd.h> - -int write( - int fildes, - const void *buf, - unsigned int nbytes -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item EAGAIN -The O_NONBLOCK flag is set for a file descriptor and the process -would be delayed in the I/O operation. - -@item EBADF -Invalid file descriptor - -@item EFBIG -An attempt was made to write to a file that exceeds the maximum file -size - -@item EINTR -The function was interrupted by a signal. - -@item EIO -Input or output error. - -@item ENOSPC -No space left on disk. - -@item EPIPE -Attempt to write to a pope or FIFO with no reader. - -@item EINVAL -Bad buffer pointer - -@end table - -@subheading DESCRIPTION: - -The @code{write()} function writes @code{nbyte} from the array pointed -to by @code{buf} into the file associated with @code{fildes}. - -If @code{nybte} is zero and the file is a regular file, the @code{write()} -function returns zero and has no other effect. If @code{nbyte} is zero -and the file is a special file, te results are not portable. - -The @code{write()} function returns the number of bytes written. This -number will be less than @code{nbytes} if there is an error. It will never -be greater than @code{nbytes}. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection fcntl - Manipulates an open file descriptor - -@findex fcntl -@cindex manipulates an open file descriptor - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <sys/types.h> -#include <fcntl.h> -#include <unistd.h> - -int fcntl( - int fildes, - int cmd -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item EACCESS -Search permission is denied for a direcotry in a file's path -prefix. - -@item EAGAIN -The O_NONBLOCK flag is set for a file descriptor and the process -would be delayed in the I/O operation. - -@item EBADF -Invalid file descriptor - -@item EDEADLK -An @code{fcntl} with function F_SETLKW would cause a deadlock. - -@item EINTR -The functioin was interrupted by a signal. - -@item EINVAL -Invalid argument - -@item EMFILE -Too many file descriptor or in use by the process. - -@item ENOLCK -No locks available - -@end table - -@subheading DESCRIPTION: - -@code{fcntl()} performs one of various miscellaneous operations on -@code{fd}. The operation in question is determined by @code{cmd}: - -@table @b - -@item F_DUPFD -Makes @code{arg} be a copy of @code{fd}, closing @code{fd} first if necessary. - -The same functionality can be more easily achieved by using @code{dup2()}. - -The old and new descriptors may be used interchangeably. They share locks, -file position pointers and flags; for example, if the file position is -modified by using @code{lseek()} on one of the descriptors, the position is -also changed for the other. - -The two descriptors do not share the close-on-exec flag, however. The -close-on-exec flag of the copy is off, meaning that it will be closed on -exec. - -On success, the new descriptor is returned. - -@item F_GETFD -Read the close-on-exec flag. If the low-order bit is 0, the file will -remain open across exec, otherwise it will be closed. - -@item F_SETFD -Set the close-on-exec flag to the value specified by @code{arg} (only the least -significant bit is used). - -@item F_GETFL -Read the descriptor's flags (all flags (as set by open()) are returned). - -@item F_SETFL -Set the descriptor's flags to the value specified by @code{arg}. Only -@code{O_APPEND} and @code{O_NONBLOCK} may be set. - -The flags are shared between copies (made with @code{dup()} etc.) of the same -file descriptor. - -The flags and their semantics are described in @code{open()}. - -@item F_GETLK, F_SETLK and F_SETLKW -Manage discretionary file locks. The third argument @code{arg} is a pointer to a -struct flock (that may be overwritten by this call). - -@item F_GETLK -Return the flock structure that prevents us from obtaining the lock, or set the -@code{l_type} field of the lock to @code{F_UNLCK} if there is no obstruction. - -@item F_SETLK -The lock is set (when @code{l_type} is @code{F_RDLCK} or @code{F_WRLCK}) or -cleared (when it is @code{F_UNLCK}. If lock is held by someone else, this -call returns -1 and sets @code{errno} to EACCES or EAGAIN. - -@item F_SETLKW -Like @code{F_SETLK}, but instead of returning an error we wait for the lock to -be released. - -@item F_GETOWN -Get the process ID (or process group) of the owner of a socket. - -Process groups are returned as negative values. - -@item F_SETOWN -Set the process or process group that owns a socket. - -For these commands, ownership means receiving @code{SIGIO} or @code{SIGURG} -signals. - -Process groups are specified using negative values. - -@end table - -@subheading NOTES: - -The errors returned by @code{dup2} are different from those returned by -@code{F_DUPFD}. - -@c -@c -@c -@page -@subsection lseek - Reposition read/write file offset - -@findex lseek -@cindex reposition read/write file offset - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <sys/types.h> -#include <unistd.h> - -int lseek( - int fildes, - off_t offset, - int whence -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item EBADF -@code{fildes} is not an open file descriptor. - -@item ESPIPE -@code{fildes} is associated with a pipe, socket or FIFO. - -@item EINVAL -@code{whence} is not a proper value. - -@end table - -@subheading DESCRIPTION: - -The @code{lseek} function repositions the offset of the file descriptor -@code{fildes} to the argument offset according to the directive whence. -The argument @code{fildes} must be an open file descriptor. @code{Lseek} -repositions the file pointer fildes as follows: - -@itemize @bullet - -@item -If @code{whence} is SEEK_SET, the offset is set to @code{offset} bytes. - -@item -If @code{whence} is SEEK_CUR, the offset is set to its current location -plus offset bytes. - -@item -If @code{whence} is SEEK_END, the offset is set to the size of the -file plus @code{offset} bytes. - -@end itemize - -The @code{lseek} function allows the file offset to be set beyond the end -of the existing end-of-file of the file. If data is later written at this -point, subsequent reads of the data in the gap return bytes of zeros -(until data is actually written into the gap). - -Some devices are incapable of seeking. The value of the pointer associated -with such a device is undefined. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection fsync - Synchronize file complete in-core state with that on disk - -@findex fsync -@cindex synchronize file complete in - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int fsync( - int fd -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -On success, zero is returned. On error, -1 is returned, and @code{errno} -is set appropriately. - -@table @b -@item EBADF -@code{fd} is not a valid descriptor open for writing - -@item EINVAL -@code{fd} is bound to a special file which does not support support synchronization - -@item EROFS -@code{fd} is bound to a special file which does not support support synchronization - -@item EIO -An error occurred during synchronization - -@end table - -@subheading DESCRIPTION: - -@code{fsync} copies all in-core parts of a file to disk. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection fdatasync - Synchronize file in-core data with that on disk - -@findex fdatasync -@cindex synchronize file in - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int fdatasync( - int fd -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -On success, zero is returned. On error, -1 is returned, and @code{errno} is -set appropriately. - -@table @b -@item EBADF -@code{fd} is not a valid file descriptor open for writing. - -@item EINVAL -@code{fd} is bound to a special file which does not support synchronization. - -@item EIO -An error occurred during synchronization. - -@item EROFS -@code{fd} is bound to a special file which dows not support synchronization. - -@end table - -@subheading DESCRIPTION: - -@code{fdatasync} flushes all data buffers of a file to disk (before the system call -returns). It resembles @code{fsync} but is not required to update the metadata such -as access time. - -Applications that access databases or log files often write a tiny data fragment -(e.g., one line in a log file) and then call @code{fsync} immediately in order to -ensure that the written data is physically stored on the harddisk. Unfortunately, -fsync will always initiate two write operations: one for the newly written data and -another one in order to update the modification time stored in the inode. If the -modification time is not a part of the transaction concept @code{fdatasync} can be -used to avoid unnecessary inode disk write operations. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection sync - Schedule file system updates - -@findex sync -@cindex synchronize file systems - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -void sync(void); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -NONE - -@subheading DESCRIPTION: - -The @code{sync} service causes all information in memory that updates -file systems to be scheduled for writing out to all file systems. - - -@subheading NOTES: - -The writing of data to the file systems is only guaranteed to be -scheduled upon return. It is not necessarily complete upon return -from @code{sync}. - -@c -@c -@c -@page -@subsection mount - Mount a file system - -@findex mount -@cindex mount a file system - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <libio.h> - -int mount( - rtems_filesystem_mount_table_entry_t **mt_entry, - rtems_filesystem_operations_table *fs_ops, - rtems_filesystem_options_t fsoptions, - char *device, - char *mount_point -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item EXXX - -@end table - -@subheading DESCRIPTION: - -The @code{mount} routines mounts the filesystem class -which uses the filesystem operations specified by @code{fs_ops} -and @code{fsoptions}. The filesystem is mounted at the directory -@code{mount_point} and the mode of the mounted filesystem is -specified by @code{fsoptions}. If this filesystem class requires -a device, then the name of the device must be specified by @code{device}. - -If this operation succeeds, the mount table entry for the mounted -filesystem is returned in @code{mt_entry}. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection unmount - Unmount file systems - -@findex unmount -@cindex unmount file systems - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <libio.h> - -int unmount( - const char *mount_path -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item EXXX -@end table - -@subheading DESCRIPTION: - -The @code{unmount} routine removes the attachment of the filesystem specified -by @code{mount_path}. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection readv - Vectored read from a file - -@findex readv -@cindex vectored read from a file - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <sys/uio.h> - -ssize_t readv( - int fd, - const struct iovec *iov, - int iovcnt -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -In addition to the errors detected by -@code{Input and Output Primitives Manager read - Reads from a file, read()}, -this routine may return -1 and sets @code{errno} based upon the following -errors: - -@table @b -@item EINVAL -The sum of the @code{iov_len} values in the iov array overflowed an -@code{ssize_t}. - -@item EINVAL -The @code{iovcnt} argument was less than or equal to 0, or greater -than @code{IOV_MAX}. - -@end table - -@subheading DESCRIPTION: - -The @code{readv()} function is equivalent to @code{read()} -except as described here. The @code{readv()} function shall place -the input data into the @code{iovcnt} buffers specified by the -members of the @code{iov} array: @code{iov[0], iov[1], ..., iov[iovcnt-1]}. - -Each @code{iovec} entry specifies the base address and length of an area -in memory where data should be placed. The @code{readv()} function -always fills an area completely before proceeding to the next. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection writev - Vectored write to a file - -@findex writev -@cindex vectored write to a file - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -#include <sys/uio.h> - -ssize_t writev( - int fd, - const struct iovec *iov, - int iovcnt -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -In addition to the errors detected by -@code{Input and Output Primitives Manager write - Write to a file, write()}, -this routine may return -1 and sets @code{errno} based upon the following -errors: - -@table @b -@item EINVAL -The sum of the @code{iov_len} values in the iov array overflowed an -@code{ssize_t}. - -@item EINVAL -The @code{iovcnt} argument was less than or equal to 0, or greater -than @code{IOV_MAX}. - -@end table - -@subheading DESCRIPTION: - -The @code{writev()} function is equivalent to @code{write()}, -except as noted here. The @code{writev()} function gathers output -data from the @code{iovcnt} buffers specified by the members of -the @code{iov array}: @code{iov[0], iov[1], ..., iov[iovcnt-1]}. -The @code{iovcnt} argument is valid if greater than 0 and less -than or equal to @code{IOV_MAX}. - -Each @code{iovec} entry specifies the base address and length of -an area in memory from which data should be written. The @code{writev()} -function always writes a complete area before proceeding to the next. - -If @code{fd} refers to a regular file and all of the @code{iov_len} -members in the array pointed to by @code{iov} are 0, @code{writev()} -returns 0 and has no other effect. For other file types, the behavior -is unspecified by POSIX. - -@subheading NOTES: - -NONE - -@c -@c -@c -@page -@subsection aio_read - Asynchronous Read - -@findex aio_read -@cindex asynchronous read - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int aio_read( -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item E -The - -@end table - -@subheading DESCRIPTION: - -@subheading NOTES: - -This routine is not currently supported by RTEMS but could be -in a future version. - -@c -@c -@c -@page -@subsection aio_write - Asynchronous Write - -@findex aio_write -@cindex asynchronous write - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int aio_write( -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item E -The - -@end table - -@subheading DESCRIPTION: - -@subheading NOTES: - -This routine is not currently supported by RTEMS but could be -in a future version. - -@c -@c -@c -@page -@subsection lio_listio - List Directed I/O - -@findex lio_listio -@cindex list directed i/o - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int lio_listio( -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item E -The - -@end table - -@subheading DESCRIPTION: - -@subheading NOTES: - -This routine is not currently supported by RTEMS but could be -in a future version. - -@c -@c -@c -@page -@subsection aio_error - Retrieve Error Status of Asynchronous I/O Operation - -@findex aio_error -@cindex retrieve error status of asynchronous i/o operation - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int aio_error( -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item E -The - -@end table - -@subheading DESCRIPTION: - -@subheading NOTES: - -This routine is not currently supported by RTEMS but could be -in a future version. - -@c -@c -@c -@page -@subsection aio_return - Retrieve Return Status Asynchronous I/O Operation - -@findex aio_return -@cindex retrieve return status asynchronous i/o operation - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int aio_return( -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item E -The - -@end table - -@subheading DESCRIPTION: - -@subheading NOTES: - -This routine is not currently supported by RTEMS but could be -in a future version. - -@c -@c -@c -@page -@subsection aio_cancel - Cancel Asynchronous I/O Request - -@findex aio_cancel -@cindex cancel asynchronous i/o request - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int aio_cancel( -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item E -The - -@end table - -@subheading DESCRIPTION: - -@subheading NOTES: - -This routine is not currently supported by RTEMS but could be -in a future version. - -@c -@c -@c -@page -@subsection aio_suspend - Wait for Asynchronous I/O Request - -@findex aio_suspend -@cindex wait for asynchronous i/o request - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int aio_suspend( -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item E -The - -@end table - -@subheading DESCRIPTION: - -@subheading NOTES: - -This routine is not currently supported by RTEMS but could be -in a future version. - -@c -@c -@c -@page -@subsection aio_fsync - Asynchronous File Synchronization - -@findex aio_fsync -@cindex asynchronous file synchronization - -@subheading CALLING SEQUENCE: - -@ifset is-C -@example -int aio_fsync( -); -@end example -@end ifset - -@ifset is-Ada -@end ifset - -@subheading STATUS CODES: - -@table @b -@item E -The - -@end table - -@subheading DESCRIPTION: - -@subheading NOTES: - -This routine is not currently supported by RTEMS but could be -in a future version. |