NAME
getsid
- get session ID
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
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'') .