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SETSID(2)		  FreeBSD System Calls Manual		     SETSID(2)

NAME
     setsid -- create session and set process group ID

SYNOPSIS
     #include <unistd.h>

     pid_t
     setsid(void);

DESCRIPTION
     The setsid() function 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 terminal.  The calling process is
     the only process in either	the session or the process group.

     Upon successful completion, the setsid() function 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.

ERRORS
     If	an error occurs, setsid() returns -1 and the global variable errno is
     set to indicate the error,	as follows:

     [EPERM]		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.

SEE ALSO
     getsid(2),	setpgid(2), tcgetpgrp(3), tcsetpgrp(3)

STANDARDS
     The setsid() function is expected to be compliant with the	IEEE Std
     1003.1-2008 ("POSIX.1") specification.

FreeBSD	13.0			 May 31, 2015			  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | ERRORS | SEE ALSO | STANDARDS

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