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NetBSD 6.1.5 - man page for getsid (netbsd section 2)

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GETSID(2)			     BSD System Calls Manual				GETSID(2)

NAME
     getsid -- get session ID

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <unistd.h>

     pid_t
     getsid(pid_t pid);

DESCRIPTION
     The getsid() function returns the session ID of the process specified by pid.  If pid is 0,
     the session ID of the calling process is returned.  The session ID is defined as the process
     group ID of the process that is the session leader.

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

     [ESRCH]		No process can be found corresponding to that specified by pid.

SEE ALSO
     getpgid(2), setsid(2), termios(4)

STANDARDS
     The getsid() function conforms to X/Open Portability Guide Issue 4, Version 2 (``XPG4.2'').

BSD					  April 4, 2011 				      BSD
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