Open System Services Porting Guide (G06.29+, H06.06+, J06.03+)

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OSS and Guardian APIs..............................................................................................120

System and Process Limit Values....................................................................................120

Device Interfaces.........................................................................................................121

/etc/passwd and /etc/group Data Files........................................................................121

OSS Programs and CRE...............................................................................................121

Using OSS Function Calls..................................................................................................122

Using OSS File Function Calls............................................................................................122

Special Considerations for Files in Restricted-Access Filesets..............................................122

Using the access() Function...........................................................................................123

Using the chdir() Function.............................................................................................123

Using the chmod() Function...........................................................................................123

Using the chown() Function...........................................................................................123

Using the chroot() Function...........................................................................................124

Using the fcntl() Function..............................................................................................124

Using the link() Function...............................................................................................124

Using the lseek() Function.............................................................................................124

Using the lstat(), lstat64(), readlink(), and symlink() Functions............................................124

Using the mkdir() Function............................................................................................124

Using the mknod() Function...........................................................................................125

Using the mkfifo() Function............................................................................................125

Using the open() and open64() Functions.......................................................................125

Using the opendir(), readdir(), and readdir64() Functions.................................................125

Using the read() and write() Functions............................................................................125

Using the rename() and rmdir() Functions........................................................................126

Using the select() Function............................................................................................126

Using socket() and Related Functions..............................................................................126

AF_INET and AF_INET6 Sockets...............................................................................126

AF_UNIX Sockets...................................................................................................126

Using the stat(), stat64(), fstat() and fstat64() Functions.....................................................127

Using the unlink() Function............................................................................................127

Using OSS Process Function Calls......................................................................................127

Using the fork() and exec Set of Functions.......................................................................128

Using the exit() Function...............................................................................................128

Using the kill() Function................................................................................................128

Using the wait() and waitpid() Functions.........................................................................129

Using HP Extensions.............................................................................................................129

Guardian Procedure Calls for Interoperability......................................................................129

Process-Creation Functions Specific to HP............................................................................130

Using the tdm_fork() and tdm_execve Set of Functions .....................................................130

Using the tdm_spawn Set of Functions ...........................................................................131

Calling Guardian Procedures ...........................................................................................131

Environment-Specific I/O Routines......................................................................................132

Large File Aware Functions................................................................................................132

OSS ACL Functions..........................................................................................................133

Other Extension Functions.................................................................................................134

Using the OSS Internationalization Subsystem...........................................................................134

Internationalization Design and Development Guidelines.......................................................134

Porting Considerations for Locales......................................................................................134

Locales in OSS Client/Server Applications..........................................................................135

Interoperability Between OSS and Guardian Locales............................................................135

8 Migrating Guardian Applications to the OSS Environment...........................136

General Migration Guidelines................................................................................................136

TNS to TNS/R or TNS/E Native Migration..........................................................................137

Migration Options...........................................................................................................137

8 Contents