diff options
Diffstat (limited to 'specs/Xext/mit-shm.ms')
| -rw-r--r-- | specs/Xext/mit-shm.ms | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/specs/Xext/mit-shm.ms b/specs/Xext/mit-shm.ms index fec9b10..2e905a9 100644 --- a/specs/Xext/mit-shm.ms +++ b/specs/Xext/mit-shm.ms @@ -213,6 +213,13 @@ Note that the shared memory ID returned by the system is stored in the shminfo structure. The server will need that ID to attach itself to the segment. .LP +Also note that, on many systems for security reasons, the X server +will only accept to attach to the shared memory segment if it's +readable and writeable by ``other''. On systems where the X server is +able to determine the uid of the X client over a local transport, the +shared memory segment can be readable and writeable only by the uid of +the client. +.LP Next, attach this shared memory segment to your process: .Cs shminfo.shmaddr = image->data = shmat (shminfo.shmid, 0, 0); |