setsid(2) [minix man page]

SETSID(2)							System Calls Manual							 SETSID(2)

NAME

       setsid, getpgrp - create process group, get process group id

SYNOPSIS

       #include <sys/types.h>
       #include <unistd.h>

       pid_t setsid(void)
       pid_t getpgrp(void)

DESCRIPTION

       Setsid() creates a new session if the calling process is not already a session leader.  The calling process becomes the session leader of a
       new process group and the process group ID of this new process group will be equal to the process  ID  of  the  new  session  leader.   The
       process group ID is inherited on a fork().

       Getpgrp() returns the process group ID of the calling process.

SEE ALSO

       kill(2), termios(3), tty(4).

DIAGNOSTICS

       Setsid() returns the new process group ID on success, or -1 with errno set to EPERM if the process is already a session leader.

AUTHOR

       Kees J. Bot (kjb@cs.vu.nl)

																	 SETSID(2)

SETSID(2)						      BSD System Calls Manual							 SETSID(2)

NAME

     setsid -- create session and set process group ID

LIBRARY

     Standard C Library (libc, -lc)

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 conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').

BSD
								   April 4, 2011							       BSD