C++ (Cpp) exechook_establish示例

示例#1

文件： procfs_vfsops.c 项目： yazshel/netbsd-kernel

/* ARGSUSED */
int
procfs_mount(
    struct mount *mp,
    const char *path,
    void *data,
    size_t *data_len)
{
	struct lwp *l = curlwp;
	struct procfsmount *pmnt;
	struct procfs_args *args = data;
	int error;

	if (args == NULL)
		return EINVAL;

	if (UIO_MX & (UIO_MX-1)) {
		log(LOG_ERR, "procfs: invalid directory entry size");
		return (EINVAL);
	}

	if (mp->mnt_flag & MNT_GETARGS) {
		if (*data_len < sizeof *args)
			return EINVAL;

		pmnt = VFSTOPROC(mp);
		if (pmnt == NULL)
			return EIO;
		args->version = PROCFS_ARGSVERSION;
		args->flags = pmnt->pmnt_flags;
		*data_len = sizeof *args;
		return 0;
	}

	if (mp->mnt_flag & MNT_UPDATE)
		return (EOPNOTSUPP);

	if (*data_len >= sizeof *args && args->version != PROCFS_ARGSVERSION)
		return EINVAL;

	pmnt = kmem_zalloc(sizeof(struct procfsmount), KM_SLEEP);

	mp->mnt_stat.f_namemax = PROCFS_MAXNAMLEN;
	mp->mnt_flag |= MNT_LOCAL;
	mp->mnt_data = pmnt;
	vfs_getnewfsid(mp);

	error = set_statvfs_info(path, UIO_USERSPACE, "procfs", UIO_SYSSPACE,
	    mp->mnt_op->vfs_name, mp, l);
	pmnt->pmnt_exechook = exechook_establish(procfs_revoke_vnodes, mp);
	if (*data_len >= sizeof *args)
		pmnt->pmnt_flags = args->flags;
	else
		pmnt->pmnt_flags = 0;

	mp->mnt_iflag |= IMNT_MPSAFE;
	return error;
}

示例#2

文件： procfs_vfsops.c 项目： bradla/OpenBSD-Hammer2

/* ARGSUSED */
int
procfs_mount(struct mount *mp, const char *path, void *data, struct nameidata *ndp,
    struct proc *p)
{
	struct procfsmount *pmnt;
	struct procfs_args args;
	int error;

	if (UIO_MX & (UIO_MX-1)) {
		log(LOG_ERR, "procfs: invalid directory entry size");
		return (EINVAL);
	}

	if (mp->mnt_flag & MNT_UPDATE)
		return (EOPNOTSUPP);

	if (data != NULL) {
		error = copyin(data, &args, sizeof(args));
		if (error != 0)
			return (error);

		if (args.version != PROCFS_ARGSVERSION)
			return (EINVAL);
	} else
		args.flags = 0;

	mp->mnt_flag |= MNT_LOCAL;
	pmnt = (struct procfsmount *) malloc(sizeof(struct procfsmount),
	    M_MISCFSMNT, M_WAITOK);

	mp->mnt_data = pmnt;
	vfs_getnewfsid(mp);

	bzero(mp->mnt_stat.f_mntonname, MNAMELEN);
	strlcpy(mp->mnt_stat.f_mntonname, path, MNAMELEN);
	bzero(mp->mnt_stat.f_mntfromname, MNAMELEN);
	bcopy("procfs", mp->mnt_stat.f_mntfromname, sizeof("procfs"));
	bzero(mp->mnt_stat.f_mntfromspec, MNAMELEN);
	bcopy("procfs", mp->mnt_stat.f_mntfromspec, sizeof("procfs"));
	bcopy(&args, &mp->mnt_stat.mount_info.procfs_args, sizeof(args));

#ifdef notyet
	pmnt->pmnt_exechook = exechook_establish(procfs_revoke_vnodes, mp);
#endif
	pmnt->pmnt_flags = args.flags;

	return (0);
}