GETSID (2)
get session ID
SYNOPSIS
#include <unistd.h>
pid_t getsid(pid_t pid );
DESCRIPTION
getsid(0)
returns the session ID of the calling process.
getsid( p )
returns the session ID of the process with process ID
p .
ERRORS
On error, -1 will be returned. The only error which can happen is
ESRCH ,
when no process with process ID
p
was found.
CONFORMING TO
SVr4, which documents an additional EPERM error condition.
SEE ALSO
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