C++ di_devfs_path_free函数代码示例

/*
 * Onboard dialout devices
 * Creates links of the form "/dev/cua/[a..z]"
 */
static int
onbrd_dialout_create(di_minor_t minor, di_node_t node)
{
	char l_path[MAXPATHLEN], p_path[MAXPATHLEN];
	char  *devfspath, *buf, *mn;

	devfspath = di_devfs_path(node);
	if (devfspath == NULL) {
		devfsadm_errprint("%s: di_devfs_path() failed\n", modname);
		return (DEVFSADM_CONTINUE);
	}

	if ((mn = di_minor_name(minor)) == NULL) {
		devfsadm_errprint("%s: NULL minor name\n\t%s\n",
		    modname, devfspath);
		di_devfs_path_free(devfspath);
		return (DEVFSADM_CONTINUE);
	}

	/*
	 * verify this is a dialout port
	 */
	if (!is_dialout(mn)) {
		devfsadm_errprint("%s: not a dialout device\n\t%s:%s\n",
		    modname, devfspath, mn);
		di_devfs_path_free(devfspath);
		return (DEVFSADM_CONTINUE);
	}

	(void) strcpy(p_path, devfspath);
	(void) strcat(p_path, ":");
	(void) strcat(p_path, mn);
	di_devfs_path_free(devfspath);

	buf = NULL;

#ifdef __i386
	buf = check_compat_ports(p_path, mn);
#endif

	/*
	 * devfsadm_enumerate_char_start() is a private interface
	 * for use by the ports module only.
	 */
	if (!buf && devfsadm_enumerate_char_start(p_path, 0, &buf, obport_rules,
	    1, start_id)) {
		devfsadm_errprint("%s: devfsadm_enumerate_char_start() failed"
		    "\n\t%s\n", modname, p_path);
		return (DEVFSADM_CONTINUE);
	}

	/*
	 * create the logical link
	 */
	(void) strcpy(l_path, "cua/");
	(void) strcat(l_path, buf);
	(void) devfsadm_mklink(l_path, node, minor, 0);
	free(buf);
	return (DEVFSADM_CONTINUE);
}

/*
 * PCMCIA dialout serial ports
 * Creates links of the form "/dev/cua/pcN", where N is the PCMCIA
 * socket number the device is plugged into.
 */
static int
pcmcia_dialout_create(di_minor_t minor, di_node_t node)
{
	char l_path[MAXPATHLEN];
	char  *devfspath;
	int socket, *intp;

	devfspath = di_devfs_path(node);
	if (devfspath == NULL) {
		devfsadm_errprint("%s: di_devfs_path() failed\n", modname);
		return (DEVFSADM_TERMINATE);
	}

	if (di_prop_lookup_ints(DDI_DEV_T_ANY, node, "socket", &intp) <= 0) {
		devfsadm_errprint("%s: failed socket lookup\n\t%s\n",
		    modname, devfspath);
		di_devfs_path_free(devfspath);
		return (DEVFSADM_TERMINATE);
	}

	socket = PCMCIA_SOCKETNO(*intp);

	di_devfs_path_free(devfspath);
	(void) sprintf(l_path, "cua/pc%d", socket);
	(void) devfsadm_mklink(l_path, node, minor, 0);

	return (DEVFSADM_TERMINATE);
}

/*
 * Discover an HBA node with  matching path.
 * The di_node_t argument should be the root of the device tree.
 * This routine assumes the locks have been taken
 */
static int
find_matching_hba(di_node_t node, void *arg)
{
	int *propData, rval;
	walkarg_t *wa = (walkarg_t *)arg;
	char	*devpath, fulldevpath[MAXPATHLEN];

	/* Skip stub(instance -1) nodes */
	if (IS_STUB_NODE(node)) {
		return (DI_WALK_CONTINUE);
	}

	rval = di_prop_lookup_ints(DDI_DEV_T_ANY, node,
	    "sm-hba-supported", &propData);
	if (rval < 0) {
		return (DI_WALK_CONTINUE);
	} else {
		if ((devpath = di_devfs_path(node)) == NULL) {
			/* still continue to see if there is matching one. */
			return (DI_WALK_CONTINUE);
		}
		(void) snprintf(fulldevpath, MAXPATHLEN, "%s%s", DEVICES_DIR,
		    devpath);

		if ((strstr(fulldevpath, wa->devpath)) != NULL) {
				*wa->flag = B_TRUE;
			/* Found a node. No need to walk any more. */
			di_devfs_path_free(devpath);
			return (DI_WALK_TERMINATE);
		}
		di_devfs_path_free(devpath);
	}

	return (DI_WALK_CONTINUE);
}

int
nvme_open(di_minor_t minor)
{
	char *devpath, *path;
	int fd;

	if ((devpath = di_devfs_minor_path(minor)) == NULL)
		err(-1, "nvme_open()");

	if (asprintf(&path, "/devices%s", devpath) < 0) {
		di_devfs_path_free(devpath);
		err(-1, "nvme_open()");
	}

	di_devfs_path_free(devpath);

	fd = open(path, O_RDWR);
	free(path);

	if (fd < 0) {
		if (debug)
			warn("nvme_open(%s)", path);
		return (-1);
	}

	return (fd);
}

static int
ses_callback(di_minor_t minor, di_node_t node)
{
	char l_path[PATH_MAX];
	char *buf;
	char *devfspath;
	char p_path[PATH_MAX];
	devfsadm_enumerate_t re[] = {"^es$/^ses([0-9]+)$", 1, MATCH_ALL};

	/* find devices path -- need to free mem */
	if (NULL == (devfspath = di_devfs_path(node))) {
		return (DEVFSADM_CONTINUE);
	}

	(void) snprintf(p_path, sizeof (p_path), "%s:%s", devfspath,
	    di_minor_name(minor));


	/* find next number to use; buf is an ascii number */
	if (devfsadm_enumerate_int(p_path, 0, &buf, re, 1)) {
		/* free memory */
		di_devfs_path_free(devfspath);
		return (DEVFSADM_CONTINUE);
	}

	(void) snprintf(l_path, sizeof (l_path), "es/ses%s", buf);

	(void) devfsadm_mklink(l_path, node, minor, 0);
	/* free memory */
	free(buf);
	di_devfs_path_free(devfspath);
	return (DEVFSADM_CONTINUE);

}

/*
 * Lights Out Management (LOM) serial ports
 * Creates links of the form "/dev/term/lom-console".
 */
static int
lom_port_create(di_minor_t minor, di_node_t node)
{
	char  *devfspath;
	char  *minor_name;

	devfspath = di_devfs_path(node);
	if (devfspath == NULL) {
		devfsadm_errprint("%s: di_devfs_path() failed\n", modname);
		return (DEVFSADM_CONTINUE);
	}

	if ((minor_name = di_minor_name(minor)) == NULL) {
		devfsadm_errprint("%s: NULL minor name\n\t%s\n",
		    modname, devfspath);
		di_devfs_path_free(devfspath);
		return (DEVFSADM_CONTINUE);
	}

	/*
	 * if this is the LOM console serial port (i.e. the minor
	 * name == lom-console ), create /dev/term/lom-console link and
	 * then we are done with this node.
	 */
	if (strcmp(minor_name, "lom-console") == 0) {
		(void) devfsadm_mklink("term/lom-console", node, minor, 0);
		di_devfs_path_free(devfspath);
		return (DEVFSADM_TERMINATE);
	}

	/* This is not a LOM node, continue... */
	di_devfs_path_free(devfspath);
	return (DEVFSADM_CONTINUE);
}

static int
niu_asru_set(tnode_t *tn, di_node_t dn, topo_mod_t *mod)
{
	char *path;
	nvlist_t *fmri;
	int e;

	if ((path = di_devfs_path(dn)) != NULL) {
		fmri = topo_mod_devfmri(mod, FM_DEV_SCHEME_VERSION, path, NULL);
		if (fmri == NULL) {
			topo_mod_dprintf(mod,
			    "dev:///%s fmri creation failed.\n", path);
			di_devfs_path_free(path);
			return (-1);
		}
		di_devfs_path_free(path);
	} else {
		topo_mod_dprintf(mod, "NULL di_devfs_path.\n");
		if (topo_prop_get_fmri(tn, TOPO_PGROUP_PROTOCOL,
		    TOPO_PROP_RESOURCE, &fmri, &e) < 0)
			return (topo_mod_seterrno(mod, e));
	}
	if (topo_node_asru_set(tn, fmri, 0, &e) < 0) {
		nvlist_free(fmri);
		return (topo_mod_seterrno(mod, e));
	}
	nvlist_free(fmri);
	return (0);
}

/*
 * Walk all "service" device nodes to find the one with the
 * matching glvc minor name
 */
static char *
svc_name_to_glvc_dev_path(char *service)
{
	di_node_t root_node, service_node;
	char *glvc_path;
	char *minor_name;
	di_minor_t minor;
	char *dev_path = NULL;

	if (service == NULL)
		return (NULL);

	/* Get device node */
	root_node = di_init("/", DINFOCPYALL);
	if (root_node == DI_NODE_NIL) {
		return (dev_path);
	}

	service_node = di_drv_first_node("glvc", root_node);

	while (service_node != DI_NODE_NIL) {
		/* Make sure node name matches service name */
		if (strcmp(service, di_node_name(service_node)) == 0) {
			/* Walk minor nodes */
			minor = di_minor_next(service_node, DI_NODE_NIL);

			while (minor != DI_NODE_NIL) {
				glvc_path = di_devfs_minor_path(minor);
				minor_name = di_minor_name(minor);

				if (strcmp(minor_name, "glvc") == 0) {
					dev_path = malloc(strlen(glvc_path) +
					    strlen(DEVICES_DIR) + 1);
					(void) strcpy(dev_path, DEVICES_DIR);
					(void) strcat(dev_path, glvc_path);
					di_devfs_path_free(glvc_path);
					break;
				}

				di_devfs_path_free(glvc_path);
				minor = di_minor_next(service_node, minor);
			}
		}
		if (dev_path != NULL)
			break;

		service_node = di_drv_next_node(service_node);
	}

	di_fini(root_node);
	return (dev_path);
}

/*
 * Called for all dialout devices that are NOT onboard
 * Creates links of the form "/dev/cua/[0..n]"
 */
static int
dialout_create(di_minor_t minor, di_node_t node)
{
	char l_path[MAXPATHLEN], p_path[MAXPATHLEN];
	char  *devfspath, *buf, *mn;

	devfspath = di_devfs_path(node);
	if (devfspath == NULL) {
		devfsadm_errprint("%s: di_devfs_path() failed\n", modname);
		return (DEVFSADM_CONTINUE);
	}

	if ((mn = di_minor_name(minor)) == NULL) {
		devfsadm_errprint("%s: NULL minorname\n\t%s\n",
		    modname, devfspath);
		di_devfs_path_free(devfspath);
		return (DEVFSADM_CONTINUE);
	}

	if (!is_dialout(mn)) {
		devfsadm_errprint("%s: invalid minor name\n\t%s:%s\n",
		    modname, devfspath, mn);
		di_devfs_path_free(devfspath);
		return (DEVFSADM_CONTINUE);
	}

	(void) strcpy(p_path, devfspath);
	(void) strcat(p_path, ":");
	(void) strcat(p_path, mn);
	di_devfs_path_free(devfspath);

	if (devfsadm_enumerate_int(p_path, 0, &buf, port_rules, 1)) {
		devfsadm_errprint("%s:dialout_create:"
		    " enumerate_int() failed\n\t%s\n",
		    modname, p_path);
		return (DEVFSADM_CONTINUE);
	}
	(void) strcpy(l_path, "cua/");
	(void) strcat(l_path, buf);

	/*
	 *  add the minor name to the physical path so we can create
	 *  the link.
	 */
	(void) devfsadm_mklink(l_path, node, minor, 0);

	free(buf);
	return (DEVFSADM_CONTINUE);
}

static int
sunos_walk_minor_node_link(di_node_t node, void *args)
{
        di_minor_t minor = DI_MINOR_NIL;
        char *minor_path;
        struct devlink_cbarg arg;
	struct node_args *nargs = (struct node_args *)args;
	di_devlink_handle_t devlink_hdl = nargs->dlink_hdl;

	/* walk each minor to find ugen devices */
        while ((minor = di_minor_next(node, minor)) != DI_MINOR_NIL) {
                minor_path = di_devfs_minor_path(minor);
                arg.nargs = args;
		arg.myself = node;
                arg.minor = minor;
                (void) di_devlink_walk(devlink_hdl,
		    "^usb/[0-9a-f]+[.][0-9a-f]+", minor_path,
		    DI_PRIMARY_LINK, (void *)&arg, sunos_add_devices);
                di_devfs_path_free(minor_path);
        }

	/* switch to a different node */
	nargs->last_ugenpath = NULL;

	return (DI_WALK_CONTINUE);
}

static int
mc_node(di_minor_t minor, di_node_t node)
{
	char path[PATH_MAX], l_path[PATH_MAX], *buf, *devfspath;
	char *minor_nm;

	minor_nm = di_minor_name(minor);

	if (minor_nm == NULL) {
		return (DEVFSADM_CONTINUE);
	}

	devfspath = di_devfs_path(node);

	(void) strcpy(path, devfspath);
	(void) strcat(path, ":");
	(void) strcat(path, minor_nm);
	di_devfs_path_free(devfspath);

	/* build the physical path from the components */
	if (devfsadm_enumerate_int(path, 0, &buf, mc_rules, 1)) {
		return (DEVFSADM_CONTINUE);
	}

	(void) strcpy(l_path, "mc/mc");
	(void) strcat(l_path, buf);

	free(buf);

	(void) devfsadm_mklink(l_path, node, minor, 0);
	return (DEVFSADM_CONTINUE);
}

static int
fc_port(di_minor_t minor, di_node_t node)
{
	devfsadm_enumerate_t rules[1] = {"fc/fp([0-9]+)$", 1, MATCH_ALL};
	char *buf, path[PATH_MAX + 1];
	char *ptr;

	if (NULL == (ptr = di_devfs_path(node))) {
		return (DEVFSADM_CONTINUE);
	}

	(void) strcpy(path, ptr);
	(void) strcat(path, ":");
	(void) strcat(path, di_minor_name(minor));

	di_devfs_path_free(ptr);

	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1) != 0) {
		return (DEVFSADM_CONTINUE);
	}

	(void) strcpy(path, "fc/fp");
	(void) strcat(path, buf);
	free(buf);

	(void) devfsadm_mklink(path, node, minor, 0);
	return (DEVFSADM_CONTINUE);
}

/*
 * This function is called for every dcam1394 minor node.
 * Calls enumerate to assign a logical dcam1394 id, and then
 * devfsadm_mklink to make the link.
 */
static int
dcam1394_process(di_minor_t minor, di_node_t node)
{
	char m_name[PATH_MAX], restring0[DCAM_RE_STRING_LEN];
	char l_path[PATH_MAX], p_path[PATH_MAX], *buf, *devfspath;
	devfsadm_enumerate_t re[1];

	(void) strcpy(m_name, di_minor_name(minor));

	if (strcmp(di_driver_name(node), "dcam1394") != 0) {
	    return (DEVFSADM_CONTINUE);
	}

	if (strncmp(m_name, "dcamctl", 7) == 0) {
		(void) snprintf(restring0, DCAM_RE_STRING_LEN,
				DCAM_CTL_LINK_RE);
	} else if (strncmp(m_name, "dcam", 4) == 0) {
		(void) snprintf(restring0, DCAM_RE_STRING_LEN,
				DCAM_STR_LINK_RE);
	} else {
		return (DEVFSADM_CONTINUE);
	}

	re[0].re	= restring0;
	re[0].subexp	= 1;
	re[0].flags	= MATCH_ALL;

	devfsadm_print(debug_mid,
	    "dcam1394_process: path %s\n", di_devfs_path(node));

	(void) strcpy(p_path, devfspath = di_devfs_path(node));
	(void) strcat(p_path, ":");
	(void) strcat(p_path, di_minor_name(minor));
	di_devfs_path_free(devfspath);

	/*
	 * Build the physical path from the components, omitting
	 * minor name field.  Find the logical dcam1394 id, and
	 * stuff it in buf.
	 */
	if (devfsadm_enumerate_int(p_path, 0, &buf, re, 1)) {
		devfsadm_print(debug_mid,
		    "dcam1394_process: exit/continue\n");
		return (DEVFSADM_CONTINUE);
	}

	devfsadm_print(debug_mid, "dcam1394_process: p_path=%s buf=%s\n",
	    p_path, buf);

	if (strncmp(di_minor_name(minor), "dcamctl", 7) == 0)
		(void) snprintf(l_path, PATH_MAX, "dcamctl%s", buf);
	else
		(void) snprintf(l_path, PATH_MAX, "dcam%s", buf);

	(void) devfsadm_mklink(l_path, node, minor, 0);

	free(buf);

	return (DEVFSADM_CONTINUE);
}

/*
 * Handles:
 *	minor node type "ddi_printer".
 * 	rules of the form: type=ddi_printer;name=bpp  \M0
 */
static int
printer_create(di_minor_t minor, di_node_t node)
{
	char *mn;
	char path[PATH_MAX + 1], *buf;
	devfsadm_enumerate_t rules[1] = {"^printers$/^([0-9]+)$", 1, MATCH_ALL};

	mn = di_minor_name(minor);

	if (strcmp(di_driver_name(node), "bpp") == 0) {
		(void) devfsadm_mklink(mn, node, minor, 0);
	}

	if (NULL == (buf = di_devfs_path(node))) {
		return (DEVFSADM_CONTINUE);
	}

	(void) snprintf(path, sizeof (path), "%s:%s", buf, mn);
	di_devfs_path_free(buf);

	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1)) {
		return (DEVFSADM_CONTINUE);
	}

	(void) snprintf(path, sizeof (path), "printers/%s", buf);
	free(buf);

	(void) devfsadm_mklink(path, node, minor, 0);

	return (DEVFSADM_CONTINUE);
}

static int
gpio(di_minor_t minor, di_node_t node)
{
	char l_path[PATH_MAX], p_path[PATH_MAX], *buf, *devfspath;
	char *minor_nm, *drvr_nm;


	minor_nm = di_minor_name(minor);
	drvr_nm = di_driver_name(node);
	if ((minor_nm == NULL) || (drvr_nm == NULL)) {
		return (DEVFSADM_CONTINUE);
	}

	devfspath = di_devfs_path(node);

	(void) strcpy(p_path, devfspath);
	(void) strcat(p_path, ":");
	(void) strcat(p_path, minor_nm);
	di_devfs_path_free(devfspath);

	/* build the physical path from the components */
	if (devfsadm_enumerate_int(p_path, 0, &buf, gpio_rules, 1)) {
		return (DEVFSADM_CONTINUE);
	}

	(void) snprintf(l_path, sizeof (l_path), "%s%s", "gpio", buf);

	free(buf);

	(void) devfsadm_mklink(l_path, node, minor, 0);

	return (DEVFSADM_CONTINUE);
}