int linux_shmctl(struct proc *p, struct linux_shmctl_args *args) { struct shmid_ds bsd_shmid; struct linux_shmid_ds linux_shmid; struct shmctl_args /* { int shmid; int cmd; struct shmid_ds *buf; } */ bsd_args; int error; caddr_t sg = stackgap_init(); switch (args->arg2) { case LINUX_IPC_STAT: bsd_args.shmid = args->arg1; bsd_args.cmd = IPC_STAT; bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds)); if ((error = shmctl(p, &bsd_args))) return error; if ((error = copyin((caddr_t)bsd_args.buf, (caddr_t)&bsd_shmid, sizeof(struct shmid_ds)))) return error; bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid); return copyout((caddr_t)&linux_shmid, args->ptr, sizeof(linux_shmid)); case LINUX_IPC_SET: if ((error = copyin(args->ptr, (caddr_t)&linux_shmid, sizeof(linux_shmid)))) return error; linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid); bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds)); if ((error = copyout((caddr_t)&bsd_shmid, (caddr_t)bsd_args.buf, sizeof(struct shmid_ds)))) return error; bsd_args.shmid = args->arg1; bsd_args.cmd = IPC_SET; return shmctl(p, &bsd_args); case LINUX_IPC_RMID: bsd_args.shmid = args->arg1; bsd_args.cmd = IPC_RMID; if (NULL == args->ptr) bsd_args.buf = NULL; else { if ((error = copyin(args->ptr, (caddr_t)&linux_shmid, sizeof(linux_shmid)))) return error; linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid); bsd_args.buf = (struct shmid_ds*)stackgap_alloc(&sg, sizeof(struct shmid_ds)); if ((error = copyout((caddr_t)&bsd_shmid, (caddr_t)bsd_args.buf, sizeof(struct shmid_ds)))) return error; } return shmctl(p, &bsd_args); case LINUX_IPC_INFO: case LINUX_SHM_STAT: case LINUX_SHM_INFO: case LINUX_SHM_LOCK: case LINUX_SHM_UNLOCK: default: uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->arg2); return EINVAL; } }
int linux_shmctl(struct thread *td, struct linux_shmctl_args *args) { struct l_shmid_ds linux_shmid; struct l_shminfo linux_shminfo; struct l_shm_info linux_shm_info; struct shmid_ds bsd_shmid; int error; switch (args->cmd & ~LINUX_IPC_64) { case LINUX_IPC_INFO: { struct shminfo bsd_shminfo; /* Perform shmctl wanting removed segments lookup */ error = kern_shmctl(td, args->shmid, IPC_INFO, (void *)&bsd_shminfo, NULL); if (error) return error; bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo); return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64, &linux_shminfo, PTRIN(args->buf))); } case LINUX_SHM_INFO: { struct shm_info bsd_shm_info; /* Perform shmctl wanting removed segments lookup */ error = kern_shmctl(td, args->shmid, SHM_INFO, (void *)&bsd_shm_info, NULL); if (error) return error; bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info); return copyout(&linux_shm_info, PTRIN(args->buf), sizeof(struct l_shm_info)); } case LINUX_IPC_STAT: /* Perform shmctl wanting removed segments lookup */ error = kern_shmctl(td, args->shmid, IPC_STAT, (void *)&bsd_shmid, NULL); if (error) return error; bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid); return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64, &linux_shmid, PTRIN(args->buf))); case LINUX_SHM_STAT: /* Perform shmctl wanting removed segments lookup */ error = kern_shmctl(td, args->shmid, IPC_STAT, (void *)&bsd_shmid, NULL); if (error) return error; bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid); return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64, &linux_shmid, PTRIN(args->buf))); case LINUX_IPC_SET: error = linux_shmid_pullup(args->cmd & LINUX_IPC_64, &linux_shmid, PTRIN(args->buf)); if (error) return error; linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid); /* Perform shmctl wanting removed segments lookup */ return kern_shmctl(td, args->shmid, IPC_SET, (void *)&bsd_shmid, NULL); case LINUX_IPC_RMID: { void *buf; if (args->buf == 0) buf = NULL; else { error = linux_shmid_pullup(args->cmd & LINUX_IPC_64, &linux_shmid, PTRIN(args->buf)); if (error) return error; linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid); buf = (void *)&bsd_shmid; } return kern_shmctl(td, args->shmid, IPC_RMID, buf, NULL); } case LINUX_SHM_LOCK: case LINUX_SHM_UNLOCK: default: linux_msg(td, "ipc typ=%d not implemented", args->cmd & ~LINUX_IPC_64); return EINVAL; } }