C++ devfsadm_mklink函数代码示例

/*
 * 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);
}

/*
 * For the master device:
 *	/dev/lofictl -> /devices/pseudo/[email protected]:ctl
 * For each other device
 *	/dev/lofi/1 -> /devices/pseudo/[email protected]:1
 *	/dev/rlofi/1 -> /devices/pseudo/[email protected]:1,raw
 */
static int
lofi(di_minor_t minor, di_node_t node)
{
	dev_t	dev;
	char mn[MAXNAMELEN + 1];
	char blkname[MAXNAMELEN + 1];
	char rawname[MAXNAMELEN + 1];
	char path[PATH_MAX + 1];

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

	if (strcmp(mn, "ctl") == 0) {
		(void) devfsadm_mklink(LOFI_CTL_NAME, node, minor, 0);
	} else {
		dev = di_minor_devt(minor);
		(void) snprintf(blkname, sizeof (blkname), "%d",
		    (int)minor(dev));
		(void) snprintf(rawname, sizeof (rawname), "%d,raw",
		    (int)minor(dev));

		if (strcmp(mn, blkname) == 0) {
			(void) snprintf(path, sizeof (path), "%s/%s",
			    LOFI_BLOCK_NAME, blkname);
		} else if (strcmp(mn, rawname) == 0) {
			(void) snprintf(path, sizeof (path), "%s/%s",
			    LOFI_CHAR_NAME, blkname);
		} else {
			return (DEVFSADM_CONTINUE);
		}

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

/*
 * This function is called for every ramdisk minor node.
 * Calls enumerate to assign a logical ramdisk id, and then
 * devfsadm_mklink to make the link.
 *
 * For pseudo ramdisk devices:
 *
 *	/dev/ramdiskctl      -> /devices/pseudo/[email protected]:ctl
 *	/dev/ramdisk/<name>  -> /devices/pseudo/[email protected]:<name>
 *	/dev/rramdisk/<name> -> /devices/pseudo/[email protected]:<name>,raw
 *
 * For OBP-created ramdisk devices:
 *
 *	/dev/ramdisk/<name>  -> /devices/ramdisk-<name>:a
 *	/dev/rramdisk/<name> -> /devices/ramdisk-<name>:a,raw
 */
static int
ramdisk(di_minor_t di_minor, di_node_t node)
{
	char	*name;
	char	devnm[MAXNAMELEN + 1];
	char	path[PATH_MAX];

	/*
	 * If this is an OBP-created ramdisk use the node name, having first
	 * stripped the "ramdisk-" prefix.  For pseudo ramdisks use the minor
	 * name, having first stripped any ",raw" suffix.
	 */
	if (di_nodeid(node) == DI_PROM_NODEID) {
		RD_STRIP_PREFIX(name, di_node_name(node));
		(void) strlcpy(devnm, name, sizeof (devnm));
	} else {
		(void) strlcpy(devnm, di_minor_name(di_minor), sizeof (devnm));
		RD_STRIP_SUFFIX(devnm);
	}

	if (strcmp(devnm, RD_CTL_NODE) == 0) {
		(void) devfsadm_mklink(RD_CTL_NAME, node, di_minor, 0);
	} else {
		/*
		 * Make the link in /dev/ramdisk or /dev/rramdisk.
		 */
		(void) snprintf(path, sizeof (path), "%s/%s",
		    di_minor_spectype(di_minor) == S_IFBLK ?
		    RD_BLOCK_NAME : RD_CHAR_NAME, devnm);
		(void) devfsadm_mklink(path, node, di_minor, 0);
	}

	return (DEVFSADM_CONTINUE);
}

/*
 * Creates /dev/lom and /dev/tsalarm:ctl for tsalarm node
 */
static int
tsalarm_create(di_minor_t minor, di_node_t node)
{
	char buf[PATH_MAX + 1];
	char *mn = di_minor_name(minor);

	(void) snprintf(buf, sizeof (buf), "%s%s", di_node_name(node), ":ctl");

	(void) devfsadm_mklink(mn, node, minor, 0);
	(void) devfsadm_mklink(buf, node, minor, 0);

	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);
}

/*
 * 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);
}

/*
 * 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);
}

/*
 * 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);
}

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);
}

/*
 * Handles minor node type "ddi_parallel".
 * type=ddi_parallel;name=mcpp     mcpp\N0
 */
static int
parallel(di_minor_t minor, di_node_t node)
{
	char path[PATH_MAX + 1], *buf;
	devfsadm_enumerate_t rules[1] = {"mcpp([0-9]+)$", 1, MATCH_ALL};


	if (strcmp(di_node_name(node), "mcpp") != 0) {
		return (DEVFSADM_CONTINUE);
	}

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

	(void) snprintf(path, sizeof (path), "%s:%s",
	    buf, di_minor_name(minor));

	di_devfs_path_free(buf);

	if (devfsadm_enumerate_int(path, 0, &buf, rules, 1)) {
		return (DEVFSADM_CONTINUE);
	}
	(void) snprintf(path, sizeof (path), "mcpp%s", buf);
	free(buf);

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

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);

}

/*
 * Handles:
 *	/dev/av/[0-9]+/(async|isoch)
 */
static int
av_create(di_minor_t minor, di_node_t node)
{
	devfsadm_enumerate_t rules[1] = {"^av$/^([0-9]+)$", 1, MATCH_ADDR};
	char	*minor_str;
	char	path[PATH_MAX + 1];
	char	*buf;

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

	minor_str = di_minor_name(minor);
	(void) snprintf(path, sizeof (path), "%s:%s", buf, minor_str);
	di_devfs_path_free(buf);

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

	(void) snprintf(path, sizeof (path), "av/%s/%s", buf, minor_str);
	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);
}

/*
 * Handles links of the form:
 * type=ddi_pseudo;name=sckmdrv		kmdrv\M0
 * type=ddi_pseudo;name=oplkmdrv	kmdrv\M0
 */
static int
kmdrv_create(di_minor_t minor, di_node_t node)
{

	(void) devfsadm_mklink("kmdrv", 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);
}