Differential D21393 Diff 62556 head/sys/kern/uipc_shm.c

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head/sys/kern/uipc_shm.c

Show First 20 Lines • Show All 1,310 Lines • ▼ Show 20 Lines	sysctl_posix_shm_list(SYSCTL_HANDLER_ARGS)
sbuf_delete(&sb);		sbuf_delete(&sb);
return (error != 0 ? error : error2);		return (error != 0 ? error : error2);
}		}

SYSCTL_PROC(_kern_ipc, OID_AUTO, posix_shm_list,		SYSCTL_PROC(_kern_ipc, OID_AUTO, posix_shm_list,
CTLFLAG_RD \| CTLFLAG_MPSAFE \| CTLTYPE_OPAQUE,		CTLFLAG_RD \| CTLFLAG_MPSAFE \| CTLTYPE_OPAQUE,
NULL, 0, sysctl_posix_shm_list, "",		NULL, 0, sysctl_posix_shm_list, "",
"POSIX SHM list");		"POSIX SHM list");

		int
		kern_shm_open2(struct thread td, const char path, int flags, mode_t mode,
		int shmflags, const char *name __unused)
		{
		int initial_seals;

		if ((shmflags & ~SHM_ALLOW_SEALING) != 0)
		return (EINVAL);

		initial_seals = F_SEAL_SEAL;
		if ((shmflags & SHM_ALLOW_SEALING) != 0)
		initial_seals &= ~F_SEAL_SEAL;
		return (kern_shm_open(td, path, flags, 0, NULL, initial_seals));
		}

		/*
		* This version of the shm_open() interface leaves CLOEXEC behavior up to the
		* caller, and libc will enforce it for the traditional shm_open() call. This
		* allows other consumers, like memfd_create(), to opt-in for CLOEXEC. This
		* interface also includes a 'name' argument that is currently unused, but could
		* potentially be exported later via some interface for debugging purposes.
		* From the kernel's perspective, it is optional. Individual consumers like
		* memfd_create() may require it in order to be compatible with other systems
		* implementing the same function.
		*/
		int
		sys_shm_open2(struct thread td, struct shm_open2_args uap)
		{

		return (kern_shm_open2(td, uap->path, uap->flags, uap->mode,
		uap->shmflags, uap->name));
		}