/* $NetBSD: mkdevsw.c,v 1.4 2003/05/17 18:53:01 itojun Exp $ */ /* * Copyright (c) 2002 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by MAEKAWA Masahide (gehenna@NetBSD.org). * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * 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. */ #include #include #include #include "defs.h" static int emitconv(FILE *); static int emitdev(FILE *); static int emitdevm(FILE *); static int emitheader(FILE *); int mkdevsw(void) { FILE *fp; if ((fp = fopen("devsw.c.tmp", "w")) == NULL) { (void)fprintf(stderr, "config: cannot write devsw.c: %s\n", strerror(errno)); return (1); } if (emitheader(fp) || emitdevm(fp) || emitconv(fp) || emitdev(fp)) { (void)fprintf(stderr, "config: error writing devsw.c: %s\n", strerror(errno)); (void)fclose(fp); return (1); } (void)fclose(fp); if (moveifchanged("devsw.c.tmp", "devsw.c") != 0) { (void)fprintf(stderr, "config: error renaming devsw.c: %s\n", strerror(errno)); return (1); } return (0); } static int emitheader(FILE *fp) { if (fprintf(fp, "/*\n * MACHINE GENERATED: DO NOT EDIT\n *\n" " * devsw.c, from \"%s\"\n */\n\n", conffile) < 0) { return (1); } if (fputs("#include \n" "#include \n" "\n#define\tDEVSW_ARRAY_SIZE(x)\t" "(sizeof((x))/sizeof((x)[0]))\n", fp) < 0) { return (1); } return (0); } /* * Emit device switch table for character/block device. */ static int emitdevm(FILE *fp) { struct devm *dm; char mstr[16]; int i; if (fputs("\n/* device switch table for block device */\n", fp) < 0) return (1); for (i = 0 ; i <= maxbdevm ; i++) { (void)snprintf(mstr, sizeof(mstr), "%d", i); if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL) continue; if (fprintf(fp, "extern const struct bdevsw %s_bdevsw;\n", dm->dm_name) < 0) return (1); } if (fputs("\nconst struct bdevsw *bdevsw0[] = {\n", fp) < 0) return (1); for (i = 0 ; i <= maxbdevm ; i++) { (void)snprintf(mstr, sizeof(mstr), "%d", i); if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL) { if (fprintf(fp, "\tNULL,\n") < 0) return (1); } else { if (fprintf(fp, "\t&%s_bdevsw,\n", dm->dm_name) < 0) return (1); } } if (fputs("};\n\nconst struct bdevsw **bdevsw = bdevsw0;\n", fp) < 0) return (1); if (fputs("const int sys_bdevsws = DEVSW_ARRAY_SIZE(bdevsw0);\n" "int max_bdevsws = DEVSW_ARRAY_SIZE(bdevsw0);\n", fp) < 0) return (1); if (fputs("\n/* device switch table for character device */\n", fp) < 0) return (1); for (i = 0 ; i <= maxcdevm ; i++) { (void)snprintf(mstr, sizeof(mstr), "%d", i); if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL) continue; if (fprintf(fp, "extern const struct cdevsw %s_cdevsw;\n", dm->dm_name) < 0) return (1); } if (fputs("\nconst struct cdevsw *cdevsw0[] = {\n", fp) < 0) return (1); for (i = 0 ; i <= maxcdevm ; i++) { (void)snprintf(mstr, sizeof(mstr), "%d", i); if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL) { if (fprintf(fp, "\tNULL,\n") < 0) return (1); } else { if (fprintf(fp, "\t&%s_cdevsw,\n", dm->dm_name) < 0) return (1); } } if (fputs("};\n\nconst struct cdevsw **cdevsw = cdevsw0;\n", fp) < 0) return (1); if (fputs("const int sys_cdevsws = DEVSW_ARRAY_SIZE(cdevsw0);\n" "int max_cdevsws = DEVSW_ARRAY_SIZE(cdevsw0);\n", fp) < 0) return (1); return (0); } /* * Emit device major conversion table. */ static int emitconv(FILE *fp) { struct devm *dm; if (fputs("\n/* device conversion table */\n" "struct devsw_conv devsw_conv0[] = {\n", fp) < 0) return (-1); TAILQ_FOREACH(dm, &alldevms, dm_next) { if (fprintf(fp, "\t{ \"%s\", %d, %d },\n", dm->dm_name, dm->dm_bmajor, dm->dm_cmajor) < 0) return (1); } if (fputs("};\n\n" "struct devsw_conv *devsw_conv = devsw_conv0;\n" "int max_devsw_convs = DEVSW_ARRAY_SIZE(devsw_conv0);\n", fp) < 0) return (1); return (0); } /* * Emit specific device major informations. */ static int emitdev(FILE *fp) { struct devm *dm; char mstr[16]; if (fputs("\n", fp) < 0) return (1); (void)strlcpy(mstr, "swap", sizeof(mstr)); if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL) panic("swap device is not configured"); if (fprintf(fp, "const dev_t swapdev = makedev(%d, 0);\n", dm->dm_bmajor) < 0) return (1); (void)strlcpy(mstr, "mem", sizeof(mstr)); if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL) panic("memory device is not configured"); if (fprintf(fp, "const dev_t zerodev = makedev(%d, DEV_ZERO);\n", dm->dm_cmajor) < 0) return (1); if (fputs("\n/* mem_no is only used in iskmemdev() */\n", fp) < 0) return (1); if (fprintf(fp, "const int mem_no = %d;\n", dm->dm_cmajor) < 0) return (1); return (0); }