1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * Copyright (c) 2006 Marcel Moolenaar 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD$"); 30 31#include <stand.h> 32#include <string.h> 33#include <sys/disklabel.h> 34#include "bootstrap.h" 35 36#include <efi.h> 37#include <efilib.h> 38 39static int ia64_parsedev(struct devdesc **, const char *, const char **); 40 41/* 42 * Point (dev) at an allocated device specifier for the device matching the 43 * path in (devspec). If it contains an explicit device specification, 44 * use that. If not, use the default device. 45 */ 46int 47ia64_getdev(void **vdev, const char *devspec, const char **path) 48{ 49 struct devdesc **dev = (struct devdesc **)vdev; 50 int rv; 51 52 /* 53 * If it looks like this is just a path and no device, then 54 * use the current device instead. 55 */ 56 if (devspec == NULL || *devspec == '/' || !strchr(devspec, ':')) { 57 rv = ia64_parsedev(dev, getenv("currdev"), NULL); 58 if (rv == 0 && path != NULL) 59 *path = devspec; 60 return (rv); 61 } 62 63 /* Parse the device name off the beginning of the devspec. */ 64 return (ia64_parsedev(dev, devspec, path)); 65} 66 67/* 68 * Point (dev) at an allocated device specifier matching the string version 69 * at the beginning of (devspec). Return a pointer to the remaining 70 * text in (path). 71 * 72 * In all cases, the beginning of (devspec) is compared to the names 73 * of known devices in the device switch, and then any following text 74 * is parsed according to the rules applied to the device type. 75 * 76 * For disk-type devices, the syntax is: 77 * 78 * fs<unit>: 79 */ 80static int 81ia64_parsedev(struct devdesc **dev, const char *devspec, const char **path) 82{ 83 struct devdesc *idev; 84 struct devsw *dv; 85 char *cp; 86 const char *np; 87 int i, err; 88 89 /* minimum length check */ 90 if (strlen(devspec) < 2) 91 return (EINVAL); 92 93 /* look for a device that matches */ 94 for (i = 0; devsw[i] != NULL; i++) { 95 dv = devsw[i]; 96 if (!strncmp(devspec, dv->dv_name, strlen(dv->dv_name))) 97 break; 98 } 99 if (devsw[i] == NULL) 100 return (ENOENT); 101 102 idev = malloc(sizeof(struct devdesc)); 103 if (idev == NULL) 104 return (ENOMEM); 105 106 idev->d_dev = dv; 107 idev->d_type = dv->dv_type; 108 idev->d_unit = -1; 109 110 err = 0; 111 np = devspec + strlen(dv->dv_name); 112 if (*np != '\0' && *np != ':') { 113 idev->d_unit = strtol(np, &cp, 0); 114 if (cp == np) { 115 idev->d_unit = -1; 116 free(idev); 117 return (EUNIT); 118 } 119 } 120 if (*cp != '\0' && *cp != ':') { 121 free(idev); 122 return (EINVAL); 123 } 124 125 if (path != NULL) 126 *path = (*cp == 0) ? cp : cp + 1; 127 if (dev != NULL) 128 *dev = idev; 129 else 130 free(idev); 131 return (0); 132} 133 134char * 135ia64_fmtdev(void *vdev) 136{ 137 struct devdesc *dev = (struct devdesc *)vdev; 138 static char buf[32]; /* XXX device length constant? */ 139 140 switch(dev->d_type) { 141 case DEVT_NONE: 142 strcpy(buf, "(no device)"); 143 break; 144 145 default: 146 sprintf(buf, "%s%d:", dev->d_dev->dv_name, dev->d_unit); 147 break; 148 } 149 150 return(buf); 151} 152 153/* 154 * Set currdev to suit the value being supplied in (value) 155 */ 156int 157ia64_setcurrdev(struct env_var *ev, int flags, const void *value) 158{ 159 struct devdesc *ncurr; 160 int rv; 161 162 rv = ia64_parsedev(&ncurr, value, NULL); 163 if (rv != 0) 164 return(rv); 165 166 free(ncurr); 167 env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL); 168 return (0); 169} 170