/* * ---------------------------------------------------------------------------- * "THE BEER-WARE LICENSE" (Revision 42): * wrote this file. As long as you retain this notice you * can do whatever you want with this stuff. If we meet some day, and you think * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp * ---------------------------------------------------------------------------- * * $Id: create_chunk.c,v 1.21.2.6 1995/11/18 10:02:10 jkh Exp $ * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "libdisk.h" /* Clone these two from sysinstall because we need our own copies * due to link order problems with `crunch'. Feh! */ static int isDebug() { static int debug = 0; /* Allow debugger to tweak it */ return debug; } /* Write something to the debugging port */ static void msgDebug(char *fmt, ...) { va_list args; char *dbg; static int DebugFD = -1; if (DebugFD == -1) DebugFD = open("/dev/ttyv1", O_RDWR); dbg = (char *)alloca(FILENAME_MAX); strcpy(dbg, "DEBUG: "); va_start(args, fmt); vsnprintf((char *)(dbg + strlen(dbg)), FILENAME_MAX, fmt, args); va_end(args); write(DebugFD, dbg, strlen(dbg)); } void Fixup_FreeBSD_Names(struct disk *d, struct chunk *c) { struct chunk *c1, *c3; int j; if (!strcmp(c->name, "X")) return; /* reset all names to "X" */ for (c1 = c->part; c1 ; c1 = c1->next) { c1->oname = c1->name; c1->name = malloc(12); if(!c1->name) err(1,"Malloc failed"); strcpy(c1->name,"X"); } /* Allocate the first swap-partition we find */ for (c1 = c->part; c1 ; c1 = c1->next) { if (c1->type == unused) continue; if (c1->subtype != FS_SWAP) continue; sprintf(c1->name,"%s%c",c->name,SWAP_PART+'a'); break; } /* Allocate the first root-partition we find */ for (c1 = c->part; c1 ; c1 = c1->next) { if (c1->type == unused) continue; if (!(c1->flags & CHUNK_IS_ROOT)) continue; sprintf(c1->name,"%s%c",c->name,0+'a'); break; } /* Try to give them the same as they had before */ for (c1 = c->part; c1 ; c1 = c1->next) { if (strcmp(c1->name,"X")) continue; for(c3 = c->part; c3 ; c3 = c3->next) if (c1 != c3 && !strcmp(c3->name, c1->oname)) { goto newname; } strcpy(c1->name,c1->oname); newname: } /* Allocate the rest sequentially */ for (c1 = c->part; c1 ; c1 = c1->next) { const char order[] = "efghabd"; if (c1->type == unused) continue; if (strcmp("X",c1->name)) continue; for(j=0;jname,"%s%c",c->name,order[j]); for(c3 = c->part; c3 ; c3 = c3->next) if (c1 != c3 && !strcmp(c3->name, c1->name)) goto match; break; match: strcpy(c1->name,"X"); continue; } } for (c1 = c->part; c1 ; c1 = c1->next) { free(c1->oname); c1->oname = 0; } } void Fixup_Extended_Names(struct disk *d, struct chunk *c) { struct chunk *c1; int j=5; for (c1 = c->part; c1 ; c1 = c1->next) { if (c1->type == unused) continue; free(c1->name); c1->name = malloc(12); if(!c1->name) err(1,"malloc failed"); sprintf(c1->name,"%ss%d",d->chunks->name,j++); if (c1->type == freebsd) Fixup_FreeBSD_Names(d,c1); } } void Fixup_Names(struct disk *d) { struct chunk *c1, *c2, *c3; int i,j; c1 = d->chunks; for(i=1,c2 = c1->part; c2 ; c2 = c2->next) { c2->flags &= ~CHUNK_BSD_COMPAT; if (c2->type == unused) continue; if (strcmp(c2->name,"X")) continue; c2->oname = malloc(12); if(!c2->oname) err(1,"malloc failed"); for(j=1;j<=NDOSPART;j++) { sprintf(c2->oname,"%ss%d",c1->name,j); for(c3 = c1->part; c3 ; c3 = c3->next) if (c3 != c2 && !strcmp(c3->name, c2->oname)) goto match; free(c2->name); c2->name = c2->oname; c2->oname = 0; break; match: continue; } if (c2->oname) free(c2->oname); } for(c2 = c1->part; c2 ; c2 = c2->next) { if (c2->type == freebsd) { c2->flags |= CHUNK_BSD_COMPAT; break; } } for(c2 = c1->part; c2 ; c2 = c2->next) { if (c2->type == freebsd) Fixup_FreeBSD_Names(d,c2); if (c2->type == extended) Fixup_Extended_Names(d,c2); } } int Create_Chunk(struct disk *d, u_long offset, u_long size, chunk_e type, int subtype, u_long flags) { int i; u_long l; if(!(flags & CHUNK_FORCE_ALL)) { /* Never use the first track */ if (!offset) { offset += d->bios_sect; size -= d->bios_sect; } /* Always end on cylinder boundary */ l = (offset+size) % (d->bios_sect * d->bios_hd); size -= l; } i = Add_Chunk(d,offset,size,"X",type,subtype,flags); Fixup_Names(d); return i; } struct chunk * Create_Chunk_DWIM(struct disk *d, struct chunk *parent , u_long size, chunk_e type, int subtype, u_long flags) { int i; struct chunk *c1; u_long offset,edge; if (!parent) parent = d->chunks; for (c1=parent->part; c1 ; c1 = c1->next) { if (c1->type != unused) continue; if (c1->size < size) continue; offset = c1->offset; goto found; } warn("Not enough unused space"); return 0; found: if (parent->flags & CHUNK_BAD144) { edge = c1->end - d->bios_sect - 127; if (offset > edge) return 0; if (offset + size > edge) size = edge - offset + 1; } i = Add_Chunk(d,offset,size,"X",type,subtype,flags); if (i) { warn("Didn't cut it"); return 0; } Fixup_Names(d); for (c1=parent->part; c1 ; c1 = c1->next) if (c1->offset == offset) return c1; err(1,"Serious internal trouble"); } int MakeDev(struct chunk *c1, char *path) { char *p = c1->name; u_long cmaj, bmaj, min, unit, part, slice; char buf[BUFSIZ], buf2[BUFSIZ]; *buf2 = '\0'; if (isDebug()) msgDebug("MakeDev: Called with %s on path %s\n", p, path); if (!strcmp(p, "X")) return 0; if (!strncmp(p, "wd", 2)) bmaj = 0, cmaj = 3; else if (!strncmp(p, "sd", 2)) bmaj = 4, cmaj = 13; else { return 0; } p += 2; if (!isdigit(*p)) { msgDebug("MakeDev: Invalid disk unit passed: %s\n", p); return 0; } unit = *p - '0'; p++; if (!*p) { slice = 1; part = 2; goto done; } else if (isdigit(*p)) { unit *= 10; unit += (*p - '0'); p++; } if (*p != 's') { msgDebug("MakeDev: `%s' is not a valid slice delimiter\n", p); return 0; } p++; if (!isdigit(*p)) { msgDebug("MakeDev: `%s' is an invalid slice number\n", p); return 0; } slice = *p - '0'; p++; if (isdigit(*p)) { slice *= 10; slice += (*p - '0'); p++; } slice = slice + 1; if (!*p) { part = 2; if(c1->type == freebsd) sprintf(buf2, "%sc", c1->name); goto done; } if (*p < 'a' || *p > 'h') { msgDebug("MakeDev: `%s' is not a valid partition name.\n", p); return 0; } part = *p - 'a'; done: if (isDebug()) msgDebug("MakeDev: Unit %d, Slice %d, Part %d\n", unit, slice, part); if (unit > 32) return 0; if (slice > 32) return 0; min = unit * 8 + 65536 * slice + part; sprintf(buf, "%s/r%s", path, c1->name); unlink(buf); if (mknod(buf, S_IFCHR|0640, makedev(cmaj,min)) == -1) { msgDebug("mknod of %s returned failure status!\n", buf); return 0; } if (*buf2) { sprintf(buf, "%s/r%s", path, buf2); unlink(buf); if (mknod(buf, S_IFCHR|0640, makedev(cmaj,min)) == -1) { msgDebug("mknod of %s returned failure status!\n", buf); return 0; } } sprintf(buf, "%s/%s", path, c1->name); unlink(buf); if (mknod(buf, S_IFBLK|0640, makedev(bmaj,min)) == -1) { msgDebug("mknod of %s returned failure status!\n", buf); return 0; } return 1; } int MakeDevChunk(struct chunk *c1, char *path) { int i; i = MakeDev(c1, path); if (c1->next) MakeDevChunk(c1->next, path); if (c1->part) MakeDevChunk(c1->part, path); return i; } int MakeDevDisk(struct disk *d, char *path) { return MakeDevChunk(d->chunks, path); }