Table 1 lists new and changed syscall commands. For details, see z/OS Using REXX and z/OS UNIX System Services.
| Syscall commands | Release | Description | Reason for change |
|---|---|---|---|
| chattr | z/OS® V1R12 | New predefined variables: Two new predefined variables have been added: S_FFCRNL and S_FFRECORD. | Release updates |
| f_control_cvt | z/OS V2R1 | New parameters:
|
Unicode support |
| fchattr | z/OS V1R12 | New predefined variables: Two new predefined variables have been added: S_FFCRNL and S_FFRECORD. | Release updates |
| fstat | z/OS V1R12 | New predefined variables: Two new predefined variables have been added: S_FFCRNL and S_FFRECORD. | Release updates |
| getmntent | z/OS V1R13 | New parameter: The pathflag parameter was added. | Command update |
| z/OS V1R13 | New predefined variables: The MNT_UID variable was added. | Command update | |
| mount | z/OS V1R13 | A rule concerning mount authority was added. | Mount granularity |
| msgget | z/OS V2R1 | New syscall command: Locates or creates a message queue. | Extending IPC capabilities for REXX |
| msgrcv | z/OS V2R1 | New syscall command: Receives messages from message queues. | Extending IPC capabilities for REXX |
| msgrmid | z/OS V2R1 | New syscall command: Removes the message queue. | Extending IPC capabilities for REXX |
| msgset | z/OS V2R1 | New syscall command: Sets the message queue attributes | Extending IPC capabilities for REXX |
| msgsnd | z/OS V2R1 | New syscall command: Sends messages to message queues. | Extending IPC capabilities for REXX |
| msgstat | z/OS V2R1 | New syscall command: Obtains status information for a message queue. | Extending IPC capabilities for REXX |
| shmat | z/OS V2R1 | New syscall command: Attaches a shared memory segment. | Extending IPC capabilities for REXX |
| shmdt | z/OS V2R1 | New syscall command: Detaches a shared memory segment. | Extending IPC capabilities for REXX |
| shmget | z/OS V2R1 | New syscall command: Locates or creates a shared memory segment. | Extending IPC capabilities for REXX |
| shmlkdestroy | z/OS V2R1 | New syscall command: Removes a shared memory lock. | Extending IPC capabilities for REXX |
| shmlkinit | z/OS V2R1 | New syscall command: Initializes a shared memory lock. | Extending IPC capabilities for REXX |
| shmlobtain | z/OS V2R1 | New syscall command: Obtains a shared memory lock. | Extending IPC capabilities for REXX |
| shmlkrelease | z/OS V2R1 | New syscall command: Releases a shared memory lock. | Extending IPC capabilities for REXX |
| shmrid | z/OS V2R1 | New syscall command: Removes a shared memory lock. | Extending IPC capabilities for REXX |
| shmset | z/OS V2R1 | New syscall command: Sets the attributes for a shared memory segment. | Extending IPC capabilities for REXX |
| shmstat | z/OS V2R1 | New syscall command: Obtains the status information for a shared memory segment. | Extending IPC capabilities for REXX |
| stat | z/OS V1R12 | New predefined variables: Two new predefined variables have been added: S_FFCRNL and S_FFRECORD. | Release updates |
| unmount | z/OS V1R13 | A rule concerning mount authority was added. | Mount granularity |
| v_close | z/OS V2R1 | New syscall command: Closes a file that was previously opened using v_open. | Extending the file server interfaces for REXX |
| v_open | z/OS V2R1 | New syscall command: Opens an existing file and optionally establishes share reservations on the file. | Extending the file server interfaces for REXX |