1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include <sys/disklabel.h> 31 32#include <stand.h> 33#include <string.h> 34 35#include "bootstrap.h" 36#include "ps3.h" 37#include "ps3devdesc.h" 38 39static int ps3_parsedev(struct ps3_devdesc **dev, const char *devspec, 40 const char **path); 41 42/* 43 * Point (dev) at an allocated device specifier for the device matching the 44 * path in (devspec). If it contains an explicit device specification, 45 * use that. If not, use the default device. 46 */ 47int 48ps3_getdev(void **vdev, const char *devspec, const char **path) 49{ 50 struct ps3_devdesc **dev = (struct ps3_devdesc **)vdev; 51 int rv = 0; 52 53 /* 54 * If it looks like this is just a path and no 55 * device, go with the current device. 56 */ 57 if ((devspec == NULL) || (devspec[0] == '/') || 58 (strchr(devspec, ':') == NULL)) { 59 rv = ps3_parsedev(dev, getenv("currdev"), NULL); 60 61 if (rv == 0 && path != NULL) 62 *path = devspec; 63 return(rv); 64 } 65 66 /* 67 * Try to parse the device name off the beginning of the devspec. 68 */ 69 return (ps3_parsedev(dev, devspec, path)); 70} 71 72/* 73 * Point (dev) at an allocated device specifier matching the string version 74 * at the beginning of (devspec). Return a pointer to the remaining 75 * text in (path). 76 * 77 * In all cases, the beginning of (devspec) is compared to the names 78 * of known devices in the device switch, and then any following text 79 * is parsed according to the rules applied to the device type. 80 * 81 * For disk-type devices, the syntax is: 82 * 83 * disk<unit>[<partition>]: 84 * 85 */ 86static int 87ps3_parsedev(struct ps3_devdesc **dev, const char *devspec, const char **path) 88{ 89 struct ps3_devdesc *idev; 90 struct devsw *dv; 91 char *cp; 92 const char *np; 93 int i, unit, pnum, ptype, err; 94 95 /* minimum length check */ 96 if (strlen(devspec) < 2) 97 return(EINVAL); 98 99 /* look for a device that matches */ 100 for (i = 0, dv = NULL; devsw[i] != NULL; i++) { 101 if (!strncmp(devspec, devsw[i]->dv_name, 102 strlen(devsw[i]->dv_name))) { 103 dv = devsw[i]; 104 break; 105 } 106 } 107 if (dv == NULL) 108 return(ENOENT); 109 idev = malloc(sizeof(struct ps3_devdesc)); 110 err = 0; 111 np = (devspec + strlen(dv->dv_name)); 112 113 switch(dv->dv_type) { 114 case DEVT_NONE: 115 break; 116 117 case DEVT_DISK: 118 unit = -1; 119 pnum = -1; 120 ptype = -1; 121 if (*np && (*np != ':')) { 122 /* next comes the unit number */ 123 unit = strtol(np, &cp, 10); 124 if (cp == np) { 125 err = EUNIT; 126 goto fail; 127 } 128 if (*cp && (*cp != ':')) { 129 /* get partition */ 130 if (*cp == 'p' && *(cp + 1) && 131 *(cp + 1) != ':') { 132 pnum = strtol(cp + 1, &cp, 10); 133 ptype = PTYPE_GPT; 134 } else { 135 pnum = *cp - 'a'; 136 ptype = PTYPE_BSDLABEL; 137 if ((pnum < 0) || 138 (pnum >= MAXPARTITIONS)) { 139 err = EPART; 140 goto fail; 141 } 142 cp++; 143 } 144 } 145 } 146 if (*cp && (*cp != ':')) { 147 err = EINVAL; 148 goto fail; 149 } 150 151 idev->d_unit = unit; 152 idev->d_disk.pnum = pnum; 153 idev->d_disk.ptype = ptype; 154 idev->d_disk.data = NULL; 155 if (path != NULL) 156 *path = (*cp == 0) ? cp : cp + 1; 157 break; 158 159 case DEVT_NET: 160 case DEVT_CD: 161 /* 162 * PS3 only has one network interface (well, two, but 163 * netbooting over wireless is not something I'm going 164 * to worry about. 165 */ 166 167 idev->d_unit = 0; 168 break; 169 170 default: 171 err = EINVAL; 172 goto fail; 173 } 174 idev->d_dev = dv; 175 idev->d_type = dv->dv_type; 176 if (dev == NULL) { 177 free(idev); 178 } else { 179 *dev = idev; 180 } 181 return (0); 182 183fail: 184 free(idev); 185 return (err); 186} 187 188 189char * 190ps3_fmtdev(void *vdev) 191{ 192 struct ps3_devdesc *dev = (struct ps3_devdesc *)vdev; 193 char *cp; 194 static char buf[128]; 195 196 switch(dev->d_type) { 197 case DEVT_NONE: 198 strcpy(buf, "(no device)"); 199 break; 200 201 case DEVT_DISK: 202 cp = buf; 203 cp += sprintf(cp, "%s%d", dev->d_dev->dv_name, dev->d_unit); 204 if (dev->d_kind.disk.pnum >= 0) { 205 if (dev->d_kind.disk.ptype == PTYPE_BSDLABEL) 206 cp += sprintf(cp, "%c", 207 dev->d_kind.disk.pnum + 'a'); 208 else if (dev->d_kind.disk.ptype == PTYPE_GPT) 209 cp += sprintf(cp, "p%i", 210 dev->d_kind.disk.pnum); 211 } 212 213 strcat(cp, ":"); 214 break; 215 216 case DEVT_NET: 217 case DEVT_CD: 218 sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit); 219 break; 220 } 221 return(buf); 222} 223 224/* 225 * Set currdev to suit the value being supplied in (value). 226 */ 227int 228ps3_setcurrdev(struct env_var *ev, int flags, const void *value) 229{ 230 struct ps3_devdesc *ncurr; 231 int rv; 232 233 if ((rv = ps3_parsedev(&ncurr, value, NULL)) != 0) 234 return (rv); 235 free(ncurr); 236 env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL); 237 return (0); 238} 239