getsid#

Synopsis#

#include <unistd.h>

pid_t getsid(pid_t pid);

Status#

Partially implemented

Conformance#

IEEE Std 1003.1-2017

Description#

The getsid() function shall obtain the process group ID of the process that is the session leader of the process specified by pid. If pid is (pid_t)0, it specifies the calling process.

Return value#

Upon successful completion, getsid() shall return the process group ID of the session leader of the specified process. Otherwise, it shall return -1 and set errno to indicate the error.

Errors#

The getsid() function shall fail if:

  • EPERM - The process specified by pid is not in the same session as the calling process, and the implementation does not allow access to the process group ID of the session leader of that process from the calling process.

  • ESRCH - There is no process with a process ID equal to pid.

Tests#

Untested

Known bugs#

None

See Also#

  1. Standard library functions

  2. Table of Contents