Installation guide

File Creation Mode
S_ISGID bit
New File Group ID Equals
Effective Group ID of
Process or Support Group
Member
New File S_ISGID bit
Clear Yes Clear
Clear No Clear
Set Yes Set
Set No Clear
If the keyword is not set as in the previous table, the S_ISGID bit is
always cleared, as per the base operating system and the POSIX interface.
5.6.1.5 System V IPC
The following keywords define the System V IPC parameters (messages,
semaphores, and shared memory):
Messages Keywords Usage
msgmax
Maximum message size
msgmnb
Maximum number of bytes on queue
msgmni
Number of message queue identifiers
msgtql
Number of system message headers
Semaphores Keywords Usage
semaem
Adjust on exit maximum value
semmni
Number of semaphore identifiers
semmns
Number of semaphores in the system
semmsl
Maximum number of semaphores per ID
semopm
Maximum number of semaphores per semop call
semume
Maximum number of undo entries per process
semvmx
Semaphore maximum value
Shared Memory Keywords Usage
shmmax
Maximum shared memory segment size
shmmin
Minimum shared memory segment size
Configuring the Kernel 5–41