1*22028508SToomas Soome /*
2*22028508SToomas Soome * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3*22028508SToomas Soome * Copyright (c) 2006 Marcel Moolenaar
4*22028508SToomas Soome * All rights reserved.
5*22028508SToomas Soome *
6*22028508SToomas Soome * Redistribution and use in source and binary forms, with or without
7*22028508SToomas Soome * modification, are permitted provided that the following conditions
8*22028508SToomas Soome * are met:
9*22028508SToomas Soome * 1. Redistributions of source code must retain the above copyright
10*22028508SToomas Soome * notice, this list of conditions and the following disclaimer.
11*22028508SToomas Soome * 2. Redistributions in binary form must reproduce the above copyright
12*22028508SToomas Soome * notice, this list of conditions and the following disclaimer in the
13*22028508SToomas Soome * documentation and/or other materials provided with the distribution.
14*22028508SToomas Soome *
15*22028508SToomas Soome * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16*22028508SToomas Soome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17*22028508SToomas Soome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18*22028508SToomas Soome * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19*22028508SToomas Soome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20*22028508SToomas Soome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21*22028508SToomas Soome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22*22028508SToomas Soome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23*22028508SToomas Soome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24*22028508SToomas Soome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25*22028508SToomas Soome * SUCH DAMAGE.
26*22028508SToomas Soome */
27*22028508SToomas Soome
28*22028508SToomas Soome #include <sys/cdefs.h>
29*22028508SToomas Soome
30*22028508SToomas Soome #include <stand.h>
31*22028508SToomas Soome #include <string.h>
32*22028508SToomas Soome #include <sys/disklabel.h>
33*22028508SToomas Soome #include <sys/param.h>
34*22028508SToomas Soome #include <bootstrap.h>
35*22028508SToomas Soome #include <disk.h>
36*22028508SToomas Soome #include <libzfs.h>
37*22028508SToomas Soome
38*22028508SToomas Soome #include <efi.h>
39*22028508SToomas Soome #include <efilib.h>
40*22028508SToomas Soome
41*22028508SToomas Soome static int efi_parsedev(struct devdesc **, const char *, const char **);
42*22028508SToomas Soome
43*22028508SToomas Soome /*
44*22028508SToomas Soome * Point (dev) at an allocated device specifier for the device matching the
45*22028508SToomas Soome * path in (devspec). If it contains an explicit device specification,
46*22028508SToomas Soome * use that. If not, use the default device.
47*22028508SToomas Soome */
48*22028508SToomas Soome int
efi_getdev(void ** vdev,const char * devspec,const char ** path)49*22028508SToomas Soome efi_getdev(void **vdev, const char *devspec, const char **path)
50*22028508SToomas Soome {
51*22028508SToomas Soome struct devdesc **dev = (struct devdesc **)vdev;
52*22028508SToomas Soome int rv;
53*22028508SToomas Soome
54*22028508SToomas Soome /*
55*22028508SToomas Soome * If it looks like this is just a path and no device, then
56*22028508SToomas Soome * use the current device instead.
57*22028508SToomas Soome */
58*22028508SToomas Soome if (devspec == NULL || *devspec == '/' || !strchr(devspec, ':')) {
59*22028508SToomas Soome rv = efi_parsedev(dev, getenv("currdev"), NULL);
60*22028508SToomas Soome if (rv == 0 && path != NULL)
61*22028508SToomas Soome *path = devspec;
62*22028508SToomas Soome return (rv);
63*22028508SToomas Soome }
64*22028508SToomas Soome
65*22028508SToomas Soome /* Parse the device name off the beginning of the devspec. */
66*22028508SToomas Soome return (efi_parsedev(dev, devspec, path));
67*22028508SToomas Soome }
68*22028508SToomas Soome
69*22028508SToomas Soome /*
70*22028508SToomas Soome * Point (dev) at an allocated device specifier matching the string version
71*22028508SToomas Soome * at the beginning of (devspec). Return a pointer to the remaining
72*22028508SToomas Soome * text in (path).
73*22028508SToomas Soome *
74*22028508SToomas Soome * In all cases, the beginning of (devspec) is compared to the names
75*22028508SToomas Soome * of known devices in the device switch, and then any following text
76*22028508SToomas Soome * is parsed according to the rules applied to the device type.
77*22028508SToomas Soome *
78*22028508SToomas Soome * For disk-type devices, the syntax is:
79*22028508SToomas Soome *
80*22028508SToomas Soome * fs<unit>:
81*22028508SToomas Soome */
82*22028508SToomas Soome static int
efi_parsedev(struct devdesc ** dev,const char * devspec,const char ** path)83*22028508SToomas Soome efi_parsedev(struct devdesc **dev, const char *devspec, const char **path)
84*22028508SToomas Soome {
85*22028508SToomas Soome struct devdesc *idev;
86*22028508SToomas Soome struct devsw *dv;
87*22028508SToomas Soome int i, unit, err;
88*22028508SToomas Soome char *cp;
89*22028508SToomas Soome const char *np;
90*22028508SToomas Soome
91*22028508SToomas Soome /* minimum length check */
92*22028508SToomas Soome if (strlen(devspec) < 2)
93*22028508SToomas Soome return (EINVAL);
94*22028508SToomas Soome
95*22028508SToomas Soome /* look for a device that matches */
96*22028508SToomas Soome for (i = 0; devsw[i] != NULL; i++) {
97*22028508SToomas Soome dv = devsw[i];
98*22028508SToomas Soome if (strncmp(devspec, dv->dv_name, strlen(dv->dv_name)) == 0)
99*22028508SToomas Soome break;
100*22028508SToomas Soome }
101*22028508SToomas Soome if (devsw[i] == NULL)
102*22028508SToomas Soome return (ENOENT);
103*22028508SToomas Soome
104*22028508SToomas Soome np = devspec + strlen(dv->dv_name);
105*22028508SToomas Soome idev = NULL;
106*22028508SToomas Soome err = 0;
107*22028508SToomas Soome
108*22028508SToomas Soome switch (dv->dv_type) {
109*22028508SToomas Soome case DEVT_NONE:
110*22028508SToomas Soome break;
111*22028508SToomas Soome
112*22028508SToomas Soome case DEVT_DISK:
113*22028508SToomas Soome idev = malloc(sizeof (struct disk_devdesc));
114*22028508SToomas Soome if (idev == NULL)
115*22028508SToomas Soome return (ENOMEM);
116*22028508SToomas Soome
117*22028508SToomas Soome err = disk_parsedev((struct disk_devdesc *)idev, np, path);
118*22028508SToomas Soome if (err != 0)
119*22028508SToomas Soome goto fail;
120*22028508SToomas Soome break;
121*22028508SToomas Soome
122*22028508SToomas Soome case DEVT_ZFS:
123*22028508SToomas Soome idev = malloc(sizeof (struct zfs_devdesc));
124*22028508SToomas Soome if (idev == NULL)
125*22028508SToomas Soome return (ENOMEM);
126*22028508SToomas Soome
127*22028508SToomas Soome err = zfs_parsedev((struct zfs_devdesc *)idev, np, path);
128*22028508SToomas Soome if (err != 0)
129*22028508SToomas Soome goto fail;
130*22028508SToomas Soome break;
131*22028508SToomas Soome
132*22028508SToomas Soome default:
133*22028508SToomas Soome idev = malloc(sizeof (struct devdesc));
134*22028508SToomas Soome if (idev == NULL)
135*22028508SToomas Soome return (ENOMEM);
136*22028508SToomas Soome
137*22028508SToomas Soome unit = 0;
138*22028508SToomas Soome cp = (char *)np;
139*22028508SToomas Soome
140*22028508SToomas Soome if (*np != '\0' && *np != ':') {
141*22028508SToomas Soome /* get unit number if present */
142*22028508SToomas Soome errno = 0;
143*22028508SToomas Soome unit = strtol(np, &cp, 0);
144*22028508SToomas Soome if (errno != 0 || cp == np) {
145*22028508SToomas Soome err = EUNIT;
146*22028508SToomas Soome goto fail;
147*22028508SToomas Soome }
148*22028508SToomas Soome }
149*22028508SToomas Soome if (*cp != '\0' && *cp != ':') {
150*22028508SToomas Soome err = EINVAL;
151*22028508SToomas Soome goto fail;
152*22028508SToomas Soome }
153*22028508SToomas Soome
154*22028508SToomas Soome idev->d_unit = unit;
155*22028508SToomas Soome if (path != NULL)
156*22028508SToomas Soome *path = (*cp == '\0') ? cp : cp + 1;
157*22028508SToomas Soome break;
158*22028508SToomas Soome }
159*22028508SToomas Soome
160*22028508SToomas Soome idev->d_dev = dv;
161*22028508SToomas Soome
162*22028508SToomas Soome if (dev != NULL)
163*22028508SToomas Soome *dev = idev;
164*22028508SToomas Soome else
165*22028508SToomas Soome free(idev);
166*22028508SToomas Soome return (0);
167*22028508SToomas Soome
168*22028508SToomas Soome fail:
169*22028508SToomas Soome free(idev);
170*22028508SToomas Soome return (err);
171*22028508SToomas Soome }
172*22028508SToomas Soome
173*22028508SToomas Soome char *
efi_fmtdev(void * vdev)174*22028508SToomas Soome efi_fmtdev(void *vdev)
175*22028508SToomas Soome {
176*22028508SToomas Soome struct devdesc *dev = (struct devdesc *)vdev;
177*22028508SToomas Soome static char buf[SPECNAMELEN + 1];
178*22028508SToomas Soome
179*22028508SToomas Soome switch (dev->d_dev->dv_type) {
180*22028508SToomas Soome case DEVT_NONE:
181*22028508SToomas Soome strlcpy(buf, "(no device)", sizeof (buf));
182*22028508SToomas Soome break;
183*22028508SToomas Soome
184*22028508SToomas Soome case DEVT_DISK:
185*22028508SToomas Soome return (disk_fmtdev(vdev));
186*22028508SToomas Soome
187*22028508SToomas Soome case DEVT_ZFS:
188*22028508SToomas Soome return (zfs_fmtdev(dev));
189*22028508SToomas Soome
190*22028508SToomas Soome default:
191*22028508SToomas Soome snprintf(buf, sizeof (buf), "%s%d:", dev->d_dev->dv_name,
192*22028508SToomas Soome dev->d_unit);
193*22028508SToomas Soome break;
194*22028508SToomas Soome }
195*22028508SToomas Soome
196*22028508SToomas Soome return (buf);
197*22028508SToomas Soome }
198*22028508SToomas Soome
199*22028508SToomas Soome /*
200*22028508SToomas Soome * Set currdev to suit the value being supplied in (value)
201*22028508SToomas Soome */
202*22028508SToomas Soome int
efi_setcurrdev(struct env_var * ev,int flags,const void * value)203*22028508SToomas Soome efi_setcurrdev(struct env_var *ev, int flags, const void *value)
204*22028508SToomas Soome {
205*22028508SToomas Soome struct devdesc *ncurr;
206*22028508SToomas Soome int rv;
207*22028508SToomas Soome
208*22028508SToomas Soome rv = efi_parsedev(&ncurr, value, NULL);
209*22028508SToomas Soome if (rv != 0)
210*22028508SToomas Soome return (rv);
211*22028508SToomas Soome
212*22028508SToomas Soome free(ncurr);
213*22028508SToomas Soome env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);
214*22028508SToomas Soome return (0);
215*22028508SToomas Soome }
216