/* $NetBSD: devopen.c,v 1.15 2024/05/09 15:11:11 tsutsui Exp $ */ /*- * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /*- * Copyright (c) 1993 John Brezak * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <sys/param.h> #include <sys/reboot.h> #include <lib/libkern/libkern.h> #include <lib/libsa/stand.h> #include <hp300/stand/common/conf.h> #include <hp300/stand/common/samachdep.h> u_int opendev; #define ispart(c) ((c) >= 'a' && (c) <= 'h') static void usage(void); static int devlookup(const char * ,int); static int devparse(const char *, int *, int*, int*, int*, int*, char **); void usage(void) { printf("Usage: device(adaptor, controller, drive, partition)file\n" " <device><unit><partitionletter>:file\n"); } static int devlookup(const char *d, int len) { struct devsw *dp = devsw; int i; for (i = 0; i < ndevs; i++, dp++) { if (dp->dv_name && strncmp(dp->dv_name, d, len) == 0) { /* * Set the filesystem and startup up according to * the device being opened. */ switch (i) { case 0: /* ct */ memcpy(file_system, file_system_rawfs, sizeof(file_system_rawfs)); nfsys = 1; break; case 2: /* rd */ case 4: /* sd */ memcpy(file_system, file_system_ufs, sizeof(file_system_ufs)); nfsys = NFSYS_FS; break; case 6: /* le */ memcpy(file_system, file_system_nfs, sizeof(file_system_nfs)); nfsys = 1; break; default: /* Agh! What happened?! */ goto bad; } return i; } } bad: printf("No such device - Configured devices are:\n"); for (dp = devsw, i = 0; i < ndevs; i++, dp++) if (dp->dv_name) printf(" %s", dp->dv_name); printf("\n"); errno = ENODEV; return -1; } /* * Parse a device spec in one of two forms. * * dev(adapt, ctlr, unit, part)file * [A-Za-z]*[0-9]*[A-Za-z]:file * dev unit part */ static int devparse(const char *fname, int *dev, int *adapt, int *ctlr, int *unit, int *part, char **file) { int i; char *s, *args[4]; /* get device name */ for (s = (char *)fname; *s && *s != '/' && *s != ':' && *s != '('; s++) continue; /* first form */ if (*s == '(') { /* lookup device and get index */ if ((*dev = devlookup(fname, s - fname)) < 0) goto baddev; /* tokenize device ident */ args[0] = ++s; for (args[0] = s, i = 1; *s && *s != ')'; s++) { if (*s == ',') args[i++] = ++s; } switch(i) { case 4: *adapt = atoi(args[0]); *ctlr = atoi(args[1]); *unit = atoi(args[2]); *part = atoi(args[3]); break; case 3: *ctlr = atoi(args[0]); *unit = atoi(args[1]); *part = atoi(args[2]); break; case 2: *unit = atoi(args[0]); *part = atoi(args[1]); break; case 1: *part = atoi(args[0]); break; case 0: break; } *file = ++s; } /* second form */ else if (*s == ':') { int temp; /* isolate device */ for (s = (char *)fname; *s != ':' && !isdigit(*s); s++) continue; /* lookup device and get index */ if ((*dev = devlookup(fname, s - fname)) < 0) goto baddev; /* isolate unit */ if ((temp = atoi(s)) > 255) goto bad; *adapt = temp / 8; *ctlr = temp % 8; for (; isdigit(*s); s++) continue; /* translate partition */ if (!ispart(*s)) goto bad; *part = *s++ - 'a'; if (*s != ':') goto bad; *file = ++s; } /* no device present */ else *file = (char *)fname; /* return the remaining unparsed part as the file to boot */ return 0; bad: usage(); baddev: return -1; } int devopen(struct open_file *f, const char *fname, char **file) { int error; int dev, adapt, ctlr, unit, part; struct devsw *dp = &devsw[0]; dev = B_TYPE(bootdev); adapt = B_ADAPTOR(bootdev); ctlr = B_CONTROLLER(bootdev); unit = B_UNIT(bootdev); part = B_PARTITION(bootdev); if ((error = devparse(fname, &dev, &adapt, &ctlr, &unit, &part, file)) != 0) return error; /* * Set up filesystem type based on what device we're opening. */ switch (dev) { case 0: /* ct */ memcpy(file_system, file_system_rawfs, sizeof(file_system_rawfs)); nfsys = 1; break; case 2: /* rd */ case 4: /* sd */ memcpy(file_system, file_system_ufs, sizeof(file_system_ufs)); nfsys = NFSYS_FS; break; case 6: /* le */ memcpy(file_system, file_system_nfs, sizeof(file_system_nfs)); nfsys = 1; break; default: /* XXX what else should we do here? */ printf("WARNING: BOGUS BOOT DEV TYPE 0x%x!\n", dev); return EIO; } dp = &devsw[dev]; if (!dp->dv_open) return ENODEV; f->f_dev = dp; if ((error = (*dp->dv_open)(f, adapt, ctlr, part)) == 0) { if ((error = (*punitsw[dev].p_punit)(adapt, ctlr, &unit)) != 0) { goto bad; } opendev = MAKEBOOTDEV(dev, adapt, ctlr, unit, part); return 0; } bad: printf("%s(%d,%d,%d,%d): %s\n", devsw[dev].dv_name, adapt, ctlr, unit, part, strerror(error)); return error; }
