2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
33 static int ofw_parsedev(struct ofw_devdesc **, const char *, const char **);
36 * Point (dev) at an allocated device specifier for the device matching the
37 * path in (devspec). If it contains an explicit device specification,
38 * use that. If not, use the default device.
41 ofw_getdev(void **vdev, const char *devspec, const char **path)
43 struct ofw_devdesc **dev = (struct ofw_devdesc **)vdev;
47 * If it looks like this is just a path and no
48 * device, go with the current device.
50 if ((devspec == NULL) ||
51 ((strchr(devspec, '@') == NULL) &&
52 (strchr(devspec, ':') == NULL))) {
54 if (((rv = ofw_parsedev(dev, getenv("currdev"), NULL)) == 0) &&
61 * Try to parse the device name off the beginning of the devspec
63 return(ofw_parsedev(dev, devspec, path));
67 * Point (dev) at an allocated device specifier matching the string version
68 * at the beginning of (devspec). Return a pointer to the remaining
72 ofw_parsedev(struct ofw_devdesc **dev, const char *devspec, const char **path)
74 struct ofw_devdesc *idev;
84 for (p = s = devspec; *s != '\0'; p = s) {
85 if ((s = strchr(p + 1, '/')) == NULL)
88 bcopy(devspec, name, len);
90 if ((handle = OF_finddevice(name)) == -1)
92 if (OF_getprop(handle, "device_type", type, sizeof(type)) == -1)
94 for (i = 0; (dv = devsw[i]) != NULL; i++) {
95 if (strncmp(dv->dv_name, type, strlen(dv->dv_name)) == 0)
102 if (path != NULL && *s != '\0')
104 idev = malloc(sizeof(struct ofw_devdesc));
106 printf("ofw_parsedev: malloc failed\n");
109 strcpy(idev->d_path, name);
111 idev->d_type = dv->dv_type;
121 ofw_setcurrdev(struct env_var *ev, int flags, const void *value)
123 struct ofw_devdesc *ncurr;
126 if ((rv = ofw_parsedev(&ncurr, value, NULL)) != 0)
130 env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);