diff options
Diffstat (limited to 'usr.sbin/config/main.c')
| -rw-r--r-- | usr.sbin/config/main.c | 778 |
1 files changed, 0 insertions, 778 deletions
diff --git a/usr.sbin/config/main.c b/usr.sbin/config/main.c deleted file mode 100644 index b59bba4..0000000 --- a/usr.sbin/config/main.c +++ /dev/null @@ -1,778 +0,0 @@ -/* - * Copyright (c) 1980, 1993 - * The Regents of the University of California. 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. - * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. - */ - -#ifndef lint -static const char copyright[] = -"@(#) Copyright (c) 1980, 1993\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ - -#ifndef lint -#if 0 -static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93"; -#endif -static const char rcsid[] = - "$FreeBSD$"; -#endif /* not lint */ - -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/sbuf.h> -#include <sys/file.h> -#include <sys/mman.h> -#include <sys/param.h> - -#include <assert.h> -#include <ctype.h> -#include <err.h> -#include <stdio.h> -#include <string.h> -#include <sysexits.h> -#include <unistd.h> -#include <dirent.h> -#include "y.tab.h" -#include "config.h" -#include "configvers.h" - -#ifndef TRUE -#define TRUE (1) -#endif - -#ifndef FALSE -#define FALSE (0) -#endif - -#define CDIR "../compile/" - -char * PREFIX; -char destdir[MAXPATHLEN]; -char srcdir[MAXPATHLEN]; - -int debugging; -int profiling; -int found_defaults; -int incignore; - -/* - * Preserve old behaviour in INCLUDE_CONFIG_FILE handling (files are included - * literally). - */ -int filebased = 0; - -static void configfile(void); -static void get_srcdir(void); -static void usage(void); -static void cleanheaders(char *); -static void kernconfdump(const char *); -static void checkversion(void); - -struct hdr_list { - char *h_name; - struct hdr_list *h_next; -} *htab; - -/* - * Config builds a set of files for building a UNIX - * system given a description of the desired system. - */ -int -main(int argc, char **argv) -{ - - struct stat buf; - int ch, len; - char *p; - char xxx[MAXPATHLEN]; - char *kernfile; - int printmachine; - - printmachine = 0; - kernfile = NULL; - while ((ch = getopt(argc, argv, "Cd:gmpVx:")) != -1) - switch (ch) { - case 'C': - filebased = 1; - break; - case 'm': - printmachine = 1; - break; - case 'd': - if (*destdir == '\0') - strlcpy(destdir, optarg, sizeof(destdir)); - else - errx(EXIT_FAILURE, "directory already set"); - break; - case 'g': - debugging++; - break; - case 'p': - profiling++; - break; - case 'V': - printf("%d\n", CONFIGVERS); - exit(0); - case 'x': - kernfile = optarg; - break; - case '?': - default: - usage(); - } - argc -= optind; - argv += optind; - - if (kernfile != NULL) { - kernconfdump(kernfile); - exit(EXIT_SUCCESS); - } - - if (argc != 1) - usage(); - - PREFIX = *argv; - if (stat(PREFIX, &buf) != 0 || !S_ISREG(buf.st_mode)) - err(2, "%s", PREFIX); - if (freopen("DEFAULTS", "r", stdin) != NULL) { - found_defaults = 1; - yyfile = "DEFAULTS"; - } else { - if (freopen(PREFIX, "r", stdin) == NULL) - err(2, "%s", PREFIX); - yyfile = PREFIX; - } - if (*destdir != '\0') { - len = strlen(destdir); - while (len > 1 && destdir[len - 1] == '/') - destdir[--len] = '\0'; - get_srcdir(); - } else { - strlcpy(destdir, CDIR, sizeof(destdir)); - strlcat(destdir, PREFIX, sizeof(destdir)); - } - - SLIST_INIT(&cputype); - SLIST_INIT(&mkopt); - SLIST_INIT(&opt); - SLIST_INIT(&rmopts); - STAILQ_INIT(&cfgfiles); - STAILQ_INIT(&dtab); - STAILQ_INIT(&fntab); - STAILQ_INIT(&ftab); - STAILQ_INIT(&hints); - if (yyparse()) - exit(3); - - /* - * Ensure that required elements (machine, cpu, ident) are present. - */ - if (machinename == NULL) { - printf("Specify machine type, e.g. ``machine i386''\n"); - exit(1); - } - if (ident == NULL) { - printf("no ident line specified\n"); - exit(1); - } - if (SLIST_EMPTY(&cputype)) { - printf("cpu type must be specified\n"); - exit(1); - } - checkversion(); - - if (printmachine) { - printf("%s\t%s\n",machinename,machinearch); - exit(0); - } - - /* Make compile directory */ - p = path((char *)NULL); - if (stat(p, &buf)) { - if (mkdir(p, 0777)) - err(2, "%s", p); - } else if (!S_ISDIR(buf.st_mode)) - errx(EXIT_FAILURE, "%s isn't a directory", p); - - /* - * make symbolic links in compilation directory - * for "sys" (to make genassym.c work along with #include <sys/xxx>) - * and similarly for "machine". - */ - if (*srcdir == '\0') - (void)snprintf(xxx, sizeof(xxx), "../../include"); - else - (void)snprintf(xxx, sizeof(xxx), "%s/%s/include", - srcdir, machinename); - (void) unlink(path("machine")); - (void) symlink(xxx, path("machine")); - if (strcmp(machinename, machinearch) != 0) { - /* - * make symbolic links in compilation directory for - * machinearch, if it is different than machinename. - */ - if (*srcdir == '\0') - (void)snprintf(xxx, sizeof(xxx), "../../../%s/include", - machinearch); - else - (void)snprintf(xxx, sizeof(xxx), "%s/%s/include", - srcdir, machinearch); - (void) unlink(path(machinearch)); - (void) symlink(xxx, path(machinearch)); - } - configfile(); /* put config file into kernel*/ - options(); /* make options .h files */ - makefile(); /* build Makefile */ - makeenv(); /* build env.c */ - makehints(); /* build hints.c */ - headers(); /* make a lot of .h files */ - cleanheaders(p); - printf("Kernel build directory is %s\n", p); - printf("Don't forget to do ``make cleandepend && make depend''\n"); - exit(0); -} - -/* - * get_srcdir - * determine the root of the kernel source tree - * and save that in srcdir. - */ -static void -get_srcdir(void) -{ - struct stat lg, phy; - char *p, *pwd; - int i; - - if (realpath("../..", srcdir) == NULL) - err(EXIT_FAILURE, "Unable to find root of source tree"); - if ((pwd = getenv("PWD")) != NULL && *pwd == '/' && - (pwd = strdup(pwd)) != NULL) { - /* Remove the last two path components. */ - for (i = 0; i < 2; i++) { - if ((p = strrchr(pwd, '/')) == NULL) { - free(pwd); - return; - } - *p = '\0'; - } - if (stat(pwd, &lg) != -1 && stat(srcdir, &phy) != -1 && - lg.st_dev == phy.st_dev && lg.st_ino == phy.st_ino) - strlcpy(srcdir, pwd, MAXPATHLEN); - free(pwd); - } -} - -static void -usage(void) -{ - - fprintf(stderr, "usage: config [-CgmpV] [-d destdir] sysname\n"); - fprintf(stderr, " config -x kernel\n"); - exit(EX_USAGE); -} - -/* - * get_word - * returns EOF on end of file - * NULL on end of line - * pointer to the word otherwise - */ -char * -get_word(FILE *fp) -{ - static char line[80]; - int ch; - char *cp; - int escaped_nl = 0; - -begin: - while ((ch = getc(fp)) != EOF) - if (ch != ' ' && ch != '\t') - break; - if (ch == EOF) - return ((char *)EOF); - if (ch == '\\'){ - escaped_nl = 1; - goto begin; - } - if (ch == '\n') { - if (escaped_nl){ - escaped_nl = 0; - goto begin; - } - else - return (NULL); - } - cp = line; - *cp++ = ch; - while ((ch = getc(fp)) != EOF) { - if (isspace(ch)) - break; - *cp++ = ch; - } - *cp = 0; - if (ch == EOF) - return ((char *)EOF); - (void) ungetc(ch, fp); - return (line); -} - -/* - * get_quoted_word - * like get_word but will accept something in double or single quotes - * (to allow embedded spaces). - */ -char * -get_quoted_word(FILE *fp) -{ - static char line[256]; - int ch; - char *cp; - int escaped_nl = 0; - -begin: - while ((ch = getc(fp)) != EOF) - if (ch != ' ' && ch != '\t') - break; - if (ch == EOF) - return ((char *)EOF); - if (ch == '\\'){ - escaped_nl = 1; - goto begin; - } - if (ch == '\n') { - if (escaped_nl){ - escaped_nl = 0; - goto begin; - } - else - return (NULL); - } - cp = line; - if (ch == '"' || ch == '\'') { - int quote = ch; - - while ((ch = getc(fp)) != EOF) { - if (ch == quote) - break; - if (ch == '\n') { - *cp = 0; - printf("config: missing quote reading `%s'\n", - line); - exit(2); - } - *cp++ = ch; - } - } else { - *cp++ = ch; - while ((ch = getc(fp)) != EOF) { - if (isspace(ch)) - break; - *cp++ = ch; - } - if (ch != EOF) - (void) ungetc(ch, fp); - } - *cp = 0; - if (ch == EOF) - return ((char *)EOF); - return (line); -} - -/* - * prepend the path to a filename - */ -char * -path(const char *file) -{ - char *cp = NULL; - - if (file) - asprintf(&cp, "%s/%s", destdir, file); - else - cp = strdup(destdir); - return (cp); -} - -/* - * Generate configuration file based on actual settings. With this mode, user - * will be able to obtain and build conifguration file with one command. - */ -static void -configfile_dynamic(struct sbuf *sb) -{ - struct cputype *cput; - struct device *d; - struct opt *ol; - char *lend; - unsigned int i; - - asprintf(&lend, "\\n\\\n"); - assert(lend != NULL); - sbuf_printf(sb, "options\t%s%s", OPT_AUTOGEN, lend); - sbuf_printf(sb, "ident\t%s%s", ident, lend); - sbuf_printf(sb, "machine\t%s%s", machinename, lend); - SLIST_FOREACH(cput, &cputype, cpu_next) - sbuf_printf(sb, "cpu\t%s%s", cput->cpu_name, lend); - SLIST_FOREACH(ol, &mkopt, op_next) - sbuf_printf(sb, "makeoptions\t%s=%s%s", ol->op_name, - ol->op_value, lend); - SLIST_FOREACH(ol, &opt, op_next) { - if (strncmp(ol->op_name, "DEV_", 4) == 0) - continue; - sbuf_printf(sb, "options\t%s", ol->op_name); - if (ol->op_value != NULL) { - sbuf_putc(sb, '='); - for (i = 0; i < strlen(ol->op_value); i++) { - if (ol->op_value[i] == '"') - sbuf_printf(sb, "\\%c", - ol->op_value[i]); - else - sbuf_printf(sb, "%c", - ol->op_value[i]); - } - sbuf_printf(sb, "%s", lend); - } else { - sbuf_printf(sb, "%s", lend); - } - } - /* - * Mark this file as containing everything we need. - */ - STAILQ_FOREACH(d, &dtab, d_next) - sbuf_printf(sb, "device\t%s%s", d->d_name, lend); - free(lend); -} - -/* - * Generate file from the configuration files. - */ -static void -configfile_filebased(struct sbuf *sb) -{ - FILE *cff; - struct cfgfile *cf; - int i; - - /* - * Try to read all configuration files. Since those will be present as - * C string in the macro, we have to slash their ends then the line - * wraps. - */ - STAILQ_FOREACH(cf, &cfgfiles, cfg_next) { - cff = fopen(cf->cfg_path, "r"); - if (cff == NULL) { - warn("Couldn't open file %s", cf->cfg_path); - continue; - } - while ((i = getc(cff)) != EOF) { - if (i == '\n') - sbuf_printf(sb, "\\n\\\n"); - else if (i == '"' || i == '\'') - sbuf_printf(sb, "\\%c", i); - else - sbuf_putc(sb, i); - } - fclose(cff); - } -} - -static void -configfile(void) -{ - FILE *fo; - struct sbuf *sb; - char *p; - - /* Add main configuration file to the list of files to be included */ - cfgfile_add(PREFIX); - p = path("config.c.new"); - fo = fopen(p, "w"); - if (!fo) - err(2, "%s", p); - sb = sbuf_new(NULL, NULL, 2048, SBUF_AUTOEXTEND); - assert(sb != NULL); - sbuf_clear(sb); - if (filebased) { - /* Is needed, can be used for backward compatibility. */ - configfile_filebased(sb); - } else { - configfile_dynamic(sb); - } - sbuf_finish(sb); - /* - * We print first part of the template, replace our tag with - * configuration files content and later continue writing our - * template. - */ - p = strstr(kernconfstr, KERNCONFTAG); - if (p == NULL) - errx(EXIT_FAILURE, "Something went terribly wrong!"); - *p = '\0'; - fprintf(fo, "%s", kernconfstr); - fprintf(fo, "%s", sbuf_data(sb)); - p += strlen(KERNCONFTAG); - fprintf(fo, "%s", p); - sbuf_delete(sb); - fclose(fo); - moveifchanged(path("config.c.new"), path("config.c")); - cfgfile_removeall(); -} - -/* - * moveifchanged -- - * compare two files; rename if changed. - */ -void -moveifchanged(const char *from_name, const char *to_name) -{ - char *p, *q; - int changed; - size_t tsize; - struct stat from_sb, to_sb; - int from_fd, to_fd; - - changed = 0; - - if ((from_fd = open(from_name, O_RDONLY)) < 0) - err(EX_OSERR, "moveifchanged open(%s)", from_name); - - if ((to_fd = open(to_name, O_RDONLY)) < 0) - changed++; - - if (!changed && fstat(from_fd, &from_sb) < 0) - err(EX_OSERR, "moveifchanged fstat(%s)", from_name); - - if (!changed && fstat(to_fd, &to_sb) < 0) - err(EX_OSERR, "moveifchanged fstat(%s)", to_name); - - if (!changed && from_sb.st_size != to_sb.st_size) - changed++; - - tsize = (size_t)from_sb.st_size; - - if (!changed) { - p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0); - if (p == MAP_FAILED) - err(EX_OSERR, "mmap %s", from_name); - q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0); - if (q == MAP_FAILED) - err(EX_OSERR, "mmap %s", to_name); - - changed = memcmp(p, q, tsize); - munmap(p, tsize); - munmap(q, tsize); - } - if (changed) { - if (rename(from_name, to_name) < 0) - err(EX_OSERR, "rename(%s, %s)", from_name, to_name); - } else { - if (unlink(from_name) < 0) - err(EX_OSERR, "unlink(%s)", from_name); - } -} - -static void -cleanheaders(char *p) -{ - DIR *dirp; - struct dirent *dp; - struct file_list *fl; - struct hdr_list *hl; - int i; - - remember("y.tab.h"); - remember("setdefs.h"); - STAILQ_FOREACH(fl, &ftab, f_next) - remember(fl->f_fn); - - /* - * Scan the build directory and clean out stuff that looks like - * it might have been a leftover NFOO header, etc. - */ - if ((dirp = opendir(p)) == NULL) - err(EX_OSERR, "opendir %s", p); - while ((dp = readdir(dirp)) != NULL) { - i = dp->d_namlen - 2; - /* Skip non-headers */ - if (dp->d_name[i] != '.' || dp->d_name[i + 1] != 'h') - continue; - /* Skip special stuff, eg: bus_if.h, but check opt_*.h */ - if (index(dp->d_name, '_') && - strncmp(dp->d_name, "opt_", 4) != 0) - continue; - /* Check if it is a target file */ - for (hl = htab; hl != NULL; hl = hl->h_next) { - if (eq(dp->d_name, hl->h_name)) { - break; - } - } - if (hl) - continue; - printf("Removing stale header: %s\n", dp->d_name); - if (unlink(path(dp->d_name)) == -1) - warn("unlink %s", dp->d_name); - } - (void)closedir(dirp); -} - -void -remember(const char *file) -{ - char *s; - struct hdr_list *hl; - - if ((s = strrchr(file, '/')) != NULL) - s = ns(s + 1); - else - s = ns(file); - - if (index(s, '_') && strncmp(s, "opt_", 4) != 0) { - free(s); - return; - } - for (hl = htab; hl != NULL; hl = hl->h_next) { - if (eq(s, hl->h_name)) { - free(s); - return; - } - } - hl = calloc(1, sizeof(*hl)); - if (hl == NULL) - err(EXIT_FAILURE, "calloc"); - hl->h_name = s; - hl->h_next = htab; - htab = hl; -} - -/* - * This one is quick hack. Will be probably moved to elf(3) interface. - * It takes kernel configuration file name, passes it as an argument to - * elfdump -a, which output is parsed by some UNIX tools... - */ -static void -kernconfdump(const char *file) -{ - struct stat st; - FILE *fp, *pp; - int error, len, osz, r; - unsigned int i, off, size, t1, t2, align; - char *cmd, *o; - - r = open(file, O_RDONLY); - if (r == -1) - err(EXIT_FAILURE, "Couldn't open file '%s'", file); - error = fstat(r, &st); - if (error == -1) - err(EXIT_FAILURE, "fstat() failed"); - if (S_ISDIR(st.st_mode)) - errx(EXIT_FAILURE, "'%s' is a directory", file); - fp = fdopen(r, "r"); - if (fp == NULL) - err(EXIT_FAILURE, "fdopen() failed"); - osz = 1024; - o = calloc(1, osz); - if (o == NULL) - err(EXIT_FAILURE, "Couldn't allocate memory"); - /* ELF note section header. */ - asprintf(&cmd, "/usr/bin/elfdump -c %s | grep -A 8 kern_conf" - "| tail -5 | cut -d ' ' -f 2 | paste - - - - -", file); - if (cmd == NULL) - errx(EXIT_FAILURE, "asprintf() failed"); - pp = popen(cmd, "r"); - if (pp == NULL) - errx(EXIT_FAILURE, "popen() failed"); - free(cmd); - len = fread(o, osz, 1, pp); - pclose(pp); - r = sscanf(o, "%d%d%d%d%d", &off, &size, &t1, &t2, &align); - free(o); - if (r != 5) - errx(EXIT_FAILURE, "File %s doesn't contain configuration " - "file. Either unsupported, or not compiled with " - "INCLUDE_CONFIG_FILE", file); - r = fseek(fp, off, SEEK_CUR); - if (r != 0) - err(EXIT_FAILURE, "fseek() failed"); - for (i = 0; i < size; i++) { - r = fgetc(fp); - if (r == EOF) - break; - /* - * If '\0' is present in the middle of the configuration - * string, this means something very weird is happening. - * Make such case very visible. However, some architectures - * pad the length of the section with NULs to a multiple of - * sh_addralign, allow a NUL in that part of the section. - */ - if (r == '\0' && (size - i) < align) - break; - assert(r != '\0' && ("Char present in the configuration " - "string mustn't be equal to 0")); - fputc(r, stdout); - } - fclose(fp); -} - -static void -badversion(int versreq) -{ - fprintf(stderr, "ERROR: version of config(8) does not match kernel!\n"); - fprintf(stderr, "config version = %d, ", CONFIGVERS); - fprintf(stderr, "version required = %d\n\n", versreq); - fprintf(stderr, "Make sure that /usr/src/usr.sbin/config is in sync\n"); - fprintf(stderr, "with your /usr/src/sys and install a new config binary\n"); - fprintf(stderr, "before trying this again.\n\n"); - fprintf(stderr, "If running the new config fails check your config\n"); - fprintf(stderr, "file against the GENERIC or LINT config files for\n"); - fprintf(stderr, "changes in config syntax, or option/device naming\n"); - fprintf(stderr, "conventions\n\n"); - exit(1); -} - -static void -checkversion(void) -{ - FILE *ifp; - char line[BUFSIZ]; - int versreq; - - ifp = open_makefile_template(); - while (fgets(line, BUFSIZ, ifp) != 0) { - if (*line != '%') - continue; - if (strncmp(line, "%VERSREQ=", 9) != 0) - continue; - versreq = atoi(line + 9); - if (MAJOR_VERS(versreq) == MAJOR_VERS(CONFIGVERS) && - versreq <= CONFIGVERS) - continue; - badversion(versreq); - } - fclose(ifp); -} |
