Performs a write operation on an open file with arguments passed in iovec elements.
| fp | Points to a file structure returned by the fp_open kernel service. | ||||
| iov | Points to an array of iovec elements. Each iovec element describes a buffer containing data to be written to the file. | ||||
| iovcnt | Specifies the number of iovec elements in an array pointed to by the iov parameter. | ||||
| ext | Specifies an extension argument required by some device drivers. Its content, form, and use are determined by the individual driver. | ||||
| segflag | Indicates which part of memory the information designated by the iov
parameter is located in:
| ||||
| countp | Points to the location where the count of bytes actually written to the file is to be returned. |
The fp_writev kernel service is an internal interface to the function provided by the writev subroutine.
The fp_writev kernel service can be called from the process environment only.
| 0 | Indicates a successful operation. |
If an error occurs, one of the values from the /usr/include/sys/errno.h file is returned.
The fp_writev kernel service is part of Base Operating System (BOS) Runtime.
The writev subroutine.
Logical File System Kernel Services in AIX Version 4.3 Kernel Extensions and Device Support Programming Concepts.