Content-type: text/html Man page of getsid

getsid

Section: System Calls (2)
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NAME

getsid - Retrieves the session ID of a process  

SYNOPSIS

#include <unistd.h>

pid_t getsid( pid_t process_id );

Application developers may want to specify an #include statement for <sys/types.h> before the one for <unistd.h> if programs are being developed for multiple platforms. The additional #include statement is not required on Tru64 UNIX systems or by ISO or X/Open standards, but may be required on other vendors' systems that conform to these standards.
 

STANDARDS

Interfaces documented on this reference page conform to industry standards as follows:

getsid():  XPG4-UNIX

Refer to the standards(5) reference page for more information about industry standards and associated tags.
 

PARAMETERS

Specifies the process ID that identifies the process for which you want to retrieve a session ID.
 

DESCRIPTION

Use the getsid function to retrieve the session ID for a process. The function returns the session ID assigned to the process identified in the process_id parameter. If you specify 0 (zero) in the process_id parameter, the getsid function returns the session ID of the calling process.
 

RETURN VALUES

Upon successful completion, the getsid() function returns the session ID of the process identified by the process_id parameter. Otherwise, the function returns -1 and sets errno to indicate the error.
 

ERRORS

The getsid() function sets errno to the specified values for the following conditions: The process_id parameter identifies a process that is in a different session from the calling process. A process can use the getsid() function to get information only about processes in its own session. The system cannot locate the process identified by the process_ID parameter.
 

SEE ALSO

Functions:  exec(2), fork(2), getpid(2), setpgid(2), setsid(2)

Standards:  standards(5)


 

Index

NAME
SYNOPSIS
STANDARDS
PARAMETERS
DESCRIPTION
RETURN VALUES
ERRORS
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 02:40:13 GMT, October 02, 2010