github.com/PDP-10.klh10
1
0
Fork 0
mirror of https://github.com/PDP-10/klh10.git synced 2026-02-10 10:11:08 +00:00
Code Issues Releases Wiki Activity

#define IPC_[RW] if missing.

Browse Source
This commit is contained in:
Olaf Seibert
2016-12-17 14:14:13 +01:00
parent d218e5b03f
commit ff6ce33f28
1 changed files with 9 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
src/osdsup.c
View File

@@ -1619,7 +1619,16 @@ os_mmcreate(register size_t memsiz,
/* Create a shared mem seg. Set perms to owner-only RW.
** Note shmget will lose grossly if on a system where its size arg
** (defined as a u_int) is less than 32 bits!
** POSIX doesn't define symbolic constants for the permissions
** but in http://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_07_01
** does define the values, which match plain file permission bits.
*/
#ifndef IPC_R
#define IPC_R 0400
#endif
#ifndef IPC_W
#define IPC_W 0200
#endif
if ((shmid = shmget(IPC_PRIVATE, (u_int)memsiz, IPC_CREAT|IPC_R|IPC_W)) == -1) {
fprintf(stderr, "[os_mmcreate: shmget failed for %ld bytes - %s]\n",
(long)memsiz, os_strerror(errno));