.In addition to the Integrated File System commands and menus, i5/OS provides APIs that
enable ILE C for iSeries™ programs to perform functions on files and directories
in all file systems. The Integrated File System APIs are very useful for integrating the iSeries database with NetWare Enhanced Integration data. You can find information about ILE and ILE
C for iSeries in the book ILE Concepts,
SC41-5606
.
When you use Integrated File System APIs on the QNetWare file system, you need to know that these C language functions are not supported on the QNetWare file system:
| APIs | Description |
|---|---|
| givedescriptor() | Give file access to another job |
| link() | Create link to file |
| readlink() | Read value of symbolic link |
| symlink() | Make symbolic link |
| takedescriptor() | Take file access from another job |
In addition to the previous APIs, you cannot use the following APIs against NDS objects, servers, or volumes:
| APIs | Description |
|---|---|
| chmod() | Change file authorizations |
| chown() | Change owner and group of file |
| create() | Create new file or rewrite existing file |
| fchmod() | Change file authorizations by descriptor |
| fchown() | Change owner and group of file by descriptor |
| fcntl() | Perform file control action |
| ftruncate() | Truncate file |
| lseek() | Set file read/write offset |
| mkdir() | Make directory |
| read() | Read from file |
| readv() | Read from file (vector) |
| unmask() | Set authorization mask for job |
| write() | Write to file |
| writev() | Write to file (vector) |
You can see an example program that copies an iSeries database file to QNetWare File System.