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”).