Manual Reference Pages - SETSID (2)
- create session and set process group ID
system call creates a new session.
The calling process is the session leader of the new session, is the
process group leader of a new process group and has no controlling
The calling process is the only process in either the session or the
Upon successful completion, the
system call returns the value of the process group ID of the new process
group, which is the same as the process ID of the calling process.
If an error occurs,
returns -1 and the global variable
is set to indicate the error.
system call will fail if:
The calling process is already a process group leader, or the process
group ID of a process other than the calling process matches the process
ID of the calling process.
system call is expected to be compliant with the
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