- Inheritance
The Process::GID module contains a collection of module functions which can be used to portably get, set, and switch the current process‘s real, effective, and saved group IDs.
Methods
Class
| Visibility | Signature |
|---|---|
| public | change_privilege (p1) |
| public | eid () |
| public | grant_privilege (p1) |
| public | re_exchange () |
| public | re_exchangeable? () |
| public | rid () |
| public | sid_available? () |
| public | switch () |
Class Method Detail
Process::GID.change_privilege(integer) => fixnum
Change the current process‘s real and effective group ID to that specified by integer. Returns the new group ID. Not available on all platforms.
[Process.gid, Process.egid] #=> [0, 0] Process::GID.change_privilege(33) #=> 33 [Process.gid, Process.egid] #=> [33, 33]
Process.egid => fixnum
Process::GID.eid => fixnum
Process::Sys.geteid => fixnum
Returns the effective group ID for this process. Not available on all platforms.
Process.egid #=> 500
Process::GID.grant_privilege(integer) => fixnum
Process::GID.eid = integer => fixnum
Set the effective group ID, and if possible, the saved group ID of the process to the given integer. Returns the new effective group ID. Not available on all platforms.
[Process.gid, Process.egid] #=> [0, 0] Process::GID.grant_privilege(31) #=> 33 [Process.gid, Process.egid] #=> [0, 33]
Process::GID.re_exchange => fixnum
Exchange real and effective group IDs and return the new effective group ID. Not available on all platforms.
[Process.gid, Process.egid] #=> [0, 33] Process::GID.re_exchange #=> 0 [Process.gid, Process.egid] #=> [33, 0]
Process::GID.re_exchangeable? => true or false
Returns true if the real and effective group IDs of a process may be exchanged on the current platform.
Process.gid => fixnum
Process::GID.rid => fixnum
Process::Sys.getgid => fixnum
Returns the (real) group ID for this process.
Process.gid #=> 500
Process::GID.sid_available? => true or false
Returns true if the current platform has saved group ID functionality.
Process::GID.switch => fixnum
Process::GID.switch {|| block} => object
Switch the effective and real group IDs of the current process. If a block is given, the group IDs will be switched back after the block is executed. Returns the new effective group ID if called without a block, and the return value of the block if one is given.