diff options
Diffstat (limited to 'mdk-stage1/insmod-modutils/util/config.c')
| -rw-r--r-- | mdk-stage1/insmod-modutils/util/config.c | 1591 |
1 files changed, 0 insertions, 1591 deletions
diff --git a/mdk-stage1/insmod-modutils/util/config.c b/mdk-stage1/insmod-modutils/util/config.c deleted file mode 100644 index a860920f6..000000000 --- a/mdk-stage1/insmod-modutils/util/config.c +++ /dev/null @@ -1,1591 +0,0 @@ -/* - * Handle the configuration, including /etc/modules.conf - * - * Copyright 1994, 1995, 1996, 1997: - * Jacques Gelinas <jack@solucorp.qc.ca> - * Björn Ekwall <bj0rn@blox.se> February 1999 - * Keith Owens <kaos@ocs.com.au> October 1999 - * - * "kernelversion" idea from the Debian release via: - * Wichert Akkerman <wakkerma@cs.leidenuniv.nl> - * - * Björn, inspired by Richard Henderson <rth@twiddle.net>, cleaned up - * the wildcard handling and started using ftw in March 1999 - * Cleanup of hardcoded arrays: Björn Ekwall <bj0rn@blox.se> March 1999 - * Many additional keywords: Björn Ekwall <bj0rn@blox.se> (C) March 1999 - * Standardize on /etc/modules.conf Keith Owens <kaos@ocs.com.au> October 1999 - * - * Alpha typecast:Michal Jaegermann <michal@ellpspace.math.ualberta.ca> - * - * This file is part of the Linux modutils. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -/* - * Specification: /etc/modules.conf / format - * Modules may be located at different places in the filesystem. - * - * The file /etc/modules.conf contains different definitions to - * control the manipulation of modules. - * - * Standard Unix style comments and continuation line are supported. - * Comments begin with a # and continue until the end of the line. - * A line continues on the next one if the last non-white character - * is a \. - */ -/* #Specification: /etc/modules.conf / format / official name */ - -#include <stdio.h> -#include <stdarg.h> -#include <assert.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <ctype.h> -#include <sys/stat.h> -#include <signal.h> -#include <limits.h> -#include <sys/param.h> -#include <errno.h> - -#include "util.h" -#include "config.h" -#include "alias.h" - -int flag_autoclean; /* set/used by modprobe and insmod */ - -struct utsname uts_info; - -struct PATH_TYPE *modpath; -int nmodpath = 0; -static int maxpath = 0; - -struct EXEC_TYPE *execs; -int nexecs = 0; -static int maxexecs = 0; - -OPT_LIST *opt_list; -static int n_opt_list; - -OPT_LIST *abovelist; -static int n_abovelist; - -OPT_LIST *belowlist; -static int n_belowlist; - -OPT_LIST *prunelist; -static int n_prunelist; - -OPT_LIST *probe_list; -static int n_probe_list; - -OPT_LIST *probeall_list; -static int n_probeall_list; - -OPT_LIST *aliases; -static int n_aliases; - -char *persistdir = "/var/lib/modules/persist"; - -const char symprefix[] = SYMPREFIX; - -char *insmod_opt = NULL; -char *config_file = NULL; /* Which file was actually used */ -time_t config_mtime; -int root_check_off = CONFIG_ROOT_CHECK_OFF; /* Default is modules must be owned by root */ -static char *config_version; /* Hack for config_add */ -int quick = 0; /* Option -A */ - -/* The initialization order must match the gen_file_enum order in config.h */ -struct gen_files gen_file[] = { - {"generic_string", NULL, 0}, - {"pcimap", NULL, 0}, - {"isapnpmap", NULL, 0}, - {"usbmap", NULL, 0}, - {"parportmap", NULL, 0}, - {"dep", NULL, 0}, -}; - -const int gen_file_count = sizeof(gen_file)/sizeof(gen_file[0]); - -int flag_verbose; - -unsigned long safemode; - -void verbose(const char *ctl,...) -{ - if (flag_verbose) { - va_list list; - va_start(list, ctl); - vprintf(ctl, list); - va_end(list); - fflush(stdout); - } -} - - -/* - * Check to see if the existing modules.xxx files need updating, - * based on the timestamps of the modules and the config file. - */ -static int check_update (const char *file, const struct stat *sb) -{ - int len = strlen(file); - int i; - - if (!S_ISREG(sb->st_mode)) - return 0; - for (i = 0; i < gen_file_count; ++i) { - if (sb->st_mtime > gen_file[i].mtime) - break; - } - if (i == gen_file_count) - return 0; /* All generated files are up to date */ - - if (len > 2 && !strcmp(file + len - 2, ".o")) - return 1; - else if (len > 4 && !strcmp(file + len - 4, ".mod")) - return 1; -#ifdef CONFIG_USE_ZLIB - else if (len > 5 && !strcmp(file + len - 5, ".o.gz")) - return 1; -#endif - return 0; -} - -static int need_update (const char *force_ver, const char *base_dir) -{ - struct stat tmp; - char dep[PATH_MAX]; - int i; - uname (&uts_info); - if (!force_ver) - force_ver = uts_info.release; - - if (strlen (force_ver) > 50) - /* That's just silly. */ - return 1; - - for (i = 0; i < gen_file_count; ++i) { - if (stat(gen_file[i].name, &tmp)) - return 1; /* No dependency file yet, so we need to build it. */ - gen_file[i].mtime = tmp.st_mtime; - } - - if (stat ("/etc/modules.conf", &tmp) && - stat ("/etc/conf.modules", &tmp)) - return 1; - - for (i = 0; i < gen_file_count; ++i) { - if (tmp.st_mtime > gen_file[i].mtime) - return 1; /* Config file is newer. */ - } - - snprintf (dep, sizeof(dep), "%s/lib/modules/%s", base_dir, force_ver); - return xftw (dep, check_update); -} - - -/* - * Strip white char at the end of a string. - * Return the address of the last non white char + 1 (point on the '\0'). - */ -static char *strip_end(char *str) -{ - int len = strlen(str); - - for (str += len - 1; len > 0 && (isspace(*str)); --len, --str) - *str = '\0'; - return str + 1; -} - -/* - * Read a line of a configuration file and process continuation lines. - * Return buf, or NULL if EOF. - * Blank at the end of line are always stripped. - * Everything on a line following comchar is a comment. - * - * Continuation character is \ - * Comment character is # - */ -char *fgets_strip(char *buf, int sizebuf, FILE * fin, int *lineno) -{ - int nocomment = 1; /* No comments found ? */ - int contline = 0; - char *start = buf; - char *ret = NULL; - char comchar = '#'; - char contchar = '\\'; - - *buf = '\0'; - - while (fgets(buf, sizebuf, fin) != NULL) { - char *end = strip_end(buf); - char *pt = strchr(buf, comchar); - - if (pt != NULL) { - nocomment = 0; - *pt = '\0'; - end = strip_end(buf); - } - - if (lineno != NULL) - (*lineno)++; - ret = start; - if (contline) { - char *pt = buf; - - while (isspace(*pt)) - pt++; - if (pt > buf + 1) { - strcpy(buf + 1, pt); /* safe, backward copy */ - buf[0] = ' '; - end -= (int) (pt - buf) - 1; - } else if (pt == buf + 1) { - buf[0] = ' '; - } - } - if (end > buf && *(end - 1) == contchar) { - if (end == buf + 1 || *(end - 2) != contchar) { - /* Continuation */ - contline = 1; - end--; - *end = '\0'; - buf = end; - } else { - *(end - 1) = '\0'; - break; - } - } else { - break; - } - } - - return ret; -} - -static char *next_word(char *pt) -{ - char *match; - char *pt2; - - /* find end of word */ - for (pt2 = pt; *pt2 && !(isspace(*pt2)); ++pt2) { - if ((match = strchr("\"'`", *pt2)) != NULL) { - for (++pt2; *pt2 && *pt2 != *match; ++pt2) { - if (*pt2 == '\\' && *(pt2 + 1) == *match) - ++pt2; - } - } - } - - /* skip leading whitespace before next word */ - if (*pt2) { - *pt2++ = '\0'; /* terminate last word */ - while (*pt2 && isspace(*pt2)) - ++pt2; - } - return pt2; -} - -static GLOB_LIST *addlist(GLOB_LIST *orig, GLOB_LIST *add) -{ - if (!orig) - return add; - /* else */ - orig->pathv = (char **)xrealloc(orig->pathv, - (orig->pathc + add->pathc + 1) * - sizeof(char *)); - memcpy(orig->pathv + orig->pathc, add->pathv, - add->pathc * sizeof(char *)); - orig->pathc += add->pathc; - orig->pathv[orig->pathc] = NULL; - /* - free(add->pathv); - free(add); - */ - return orig; -} - -static void decode_list(int *n, OPT_LIST **list, char *arg, int adding, - char *version, int opts) -{ - GLOB_LIST *pg; - GLOB_LIST *prevlist = NULL; - int i, autoclean = 1; - int where = *n; - char *arg2 = next_word(arg); - - if (opts && !strcmp (arg, "-k")) { - if (!*arg2) - error("Missing module argument after -k\n"); - arg = arg2; - arg2 = next_word(arg); - autoclean = 0; - } - - for (i = 0; i < *n; ++i) { - if (strcmp((*list)[i].name, arg) == 0) { - if (adding) - prevlist = (*list)[i].opts; - else - free((*list)[i].opts); - (*list)[i].opts = NULL; - where = i; - break; - } - } - if (where == *n) { - (*list) = (OPT_LIST *)xrealloc((*list), - (*n + 2) * sizeof(OPT_LIST)); - (*list)[*n].name = xstrdup(arg); - (*list)[*n].autoclean = autoclean; - *n += 1; - memset(&(*list)[*n], 0, sizeof(OPT_LIST)); - } else if (!autoclean) - (*list)[where].autoclean = 0; - pg = (GLOB_LIST *)xmalloc(sizeof(GLOB_LIST)); - meta_expand(arg2, pg, NULL, version, ME_ALL); - (*list)[where].opts = addlist(prevlist, pg); -} - -static void decode_exec(char *arg, int type) -{ - char *arg2; - - execs[nexecs].when = type; - arg2 = next_word(arg); - execs[nexecs].module = xstrdup(arg); - execs[nexecs].cmd = xstrdup(arg2); - if (++nexecs >= maxexecs) { - maxexecs += 10; - execs = (struct EXEC_TYPE *)xrealloc(execs, - maxexecs * sizeof(struct EXEC_TYPE)); - } -} - -static int build_list(char **in, OPT_LIST **out, char *version, int opts) -{ - GLOB_LIST *pg; - int i; - - for (i = 0; in[i]; ++i) { - char *p = xstrdup(in[i]); - char *pt = next_word(p); - char *pn = p; - - *out = (OPT_LIST *)xrealloc(*out, (i + 2) * sizeof(OPT_LIST)); - (*out)[i].autoclean = 1; - if (opts && !strcmp (p, "-k")) { - pn = pt; - pt = next_word(pn); - (*out)[i].autoclean = 0; - } - pg = (GLOB_LIST *)xmalloc(sizeof(GLOB_LIST)); - meta_expand(pt, pg, NULL, version, ME_ALL); - (*out)[i].name = xstrdup(pn); - (*out)[i].opts = pg; - free(p); - } - memset(&(*out)[i], 0, sizeof(OPT_LIST)); - - return i; -} - -/* Environment variables can override defaults, testing only */ -static void gen_file_env(struct gen_files *gf) -{ - if (!safemode) { - char *e = xmalloc(strlen(gf->base)+5), *p1 = gf->base, *p2 = e; - while ((*p2++ = toupper(*p1++))) ; - strcpy(p2-1, "PATH"); /* safe, xmalloc */ - if ((p2 = getenv(e)) != NULL) { - free(gf->name); - gf->name = xstrdup(p2); - } - free(e); - } -} - -/* Read a config option for a generated filename */ -static int gen_file_conf(struct gen_files *gf, int assgn, const char *parm, const char *arg) -{ - - int l = strlen(gf->base); - if (assgn && - strncmp(parm, gf->base, l) == 0 && - strcmp(parm+l, "file") == 0 && - !gf->name) { - gf->name = xstrdup(arg); - return(0); - } - return(1); -} - -/* Check we have a name for a generated file */ -static int gen_file_check(struct gen_files *gf, GLOB_LIST *g, - char *base_dir, char *version) -{ - char tmp[PATH_MAX]; - int ret = 0; - if (!gf->name) { - /* - * Specification: config file / no xxxfile parameter - * The default value for generated filename xxx is: - * - * xxxfile=/lib/modules/`uname -r`/modules.xxx - * - * If the config file exists but lacks an xxxfile - * specification, the default value is used since - * the system can't work without one. - */ - snprintf(tmp, sizeof(tmp), "%s/lib/modules/%s/modules.%s", - base_dir, version, gf->base); - gf->name = xstrdup(tmp); - } else { /* xxxfile defined in modules.conf */ - /* - * If we have a xxxfile definition in the configuration file - * we must resolve any shell meta-chars in its value. - */ - if (meta_expand(gf->name, g, base_dir, version, ME_ALL)) - ret = -1; - else if (!g->pathv || g->pathv[0] == NULL) - ret = -1; - else { - free(gf->name); - gf->name = xstrdup(g->pathv[0]); - } - } - return(ret); -} - -/* - * Read the configuration file. - * If parameter "all" == 0 then ignore everything except path info - * Return -1 if any error. - * Error messages generated. - */ -static int do_read(int all, char *force_ver, char *base_dir, char *conf_file, int depth) -{ - #define MAX_LEVEL 20 - FILE *fin; - GLOB_LIST g; - int i; - int assgn; - int drop_default_paths = 1; - int lineno = 0; - int ret = 0; - int state[MAX_LEVEL + 1]; /* nested "if" */ - int level = 0; - char buf[3000]; - char tmpline[100]; - char **pathp; - char *envpath; - char *version; - char *type; - char **glb; - char old_name[] = "/etc/conf.modules"; - int conf_file_specified = 0; - - /* - * The configuration file is optional. - * No error is printed if it is missing. - * If it is missing the following content is assumed. - * - * path[boot]=/lib/modules/boot - * - * path[toplevel]=/lib/modules/`uname -r` - * - * path[toplevel]=/lib/modules/`kernelversion` - * (where kernelversion gives the major kernel version: "2.0", "2.2"...) - * - * path[toplevel]=/lib/modules/default - * - * path[kernel]=/lib/modules/kernel - * path[fs]=/lib/modules/fs - * path[net]=/lib/modules/net - * path[scsi]=/lib/modules/scsi - * path[block]=/lib/modules/block - * path[cdrom]=/lib/modules/cdrom - * path[ipv4]=/lib/modules/ipv4 - * path[ipv6]=/lib/modules/ipv6 - * path[sound]=/lib/modules/sound - * path[fc4]=/lib/modules/fc4 - * path[video]=/lib/modules/video - * path[misc]=/lib/modules/misc - * path[pcmcia]=/lib/modules/pcmcia - * path[atm]=/lib/modules/atm - * path[usb]=/lib/modules/usb - * path[ide]=/lib/modules/ide - * path[ieee1394]=/lib/modules/ieee1394 - * path[mtd]=/lib/modules/mtd - * - * The idea is that modprobe will look first if the - * modules are compiled for the current release of the kernel. - * If not found, it will look for modules that fit for the - * general kernelversion (2.0, 2.2 and so on). - * If still not found, it will look into the default release. - * And if still not found, it will look in the other directories. - * - * The strategy should be like this: - * When you install a new linux kernel, the modules should go - * into a directory related to the release (version) of the kernel. - * Then you can do a symlink "default" to this directory. - * - * Each time you compile a new kernel, the make modules_install - * will create a new directory, but it won't change thee default. - * - * When you get a module unrelated to the kernel distribution - * you can place it in one of the last three directory types. - * - * This is the default strategy. Of course you can overide - * this in /etc/modules.conf. - * - * 2.3.15 added a new file tree walk algorithm which made it possible to - * point at a top level directory and get the same behaviour as earlier - * versions of modutils. 2.3.16 takes this one stage further, it - * removes all the individual directory names from most of the scans, - * only pointing at the top level directory. The only exception is the - * last ditch scan, scanning all of /lib/modules would be a bad idea(TM) - * so the last ditch scan still runs individual directory names under - * /lib/modules. - * - * Additional syntax: - * - * [add] above module module1 ... - * Specify additional modules to pull in on top of a module - * - * [add] below module module1 ... - * Specify additional modules needed to be able to load a module - * - * [add] prune filename ... - * - * [add] probe name module1 ... - * When "name" is requested, modprobe tries to install each - * module in the list until it succeeds. - * - * [add] probeall name module1 ... - * When "name" is requested, modprobe tries to install all - * modules in the list. - * If any module is installed, the command has succeeded. - * - * [add] options module option_list - * - * For all of the above, the optional "add" prefix is used to - * add to a list instead of replacing the contents. - * - * include FILE_TO_INCLUDE - * This does what you expect. No limitation on include levels. - * - * persistdir=persist_directory - * Name the directory to save persistent data from modules. - * - * In the following WORD is a sequence if non-white characters. - * If ' " or ` is found in the string, all characters up to the - * matching ' " or ` will also be included, even whitespace. - * Every WORD will then be expanded w.r.t. meta-characters. - * If the expanded result gives more than one word, then only - * the first word of the result will be used. - * - * - * define CODE WORD - * Do a putenv("CODE=WORD") - * - * EXPRESSION below can be: - * WORD compare_op WORD - * where compare_op is one of == != < <= >= > - * The string values of the WORDs are compared - * or - * -n WORD compare_op WORD - * where compare_op is one of == != < <= >= > - * The numeric values of the WORDs are compared - * or - * WORD - * if the expansion of WORD fails, or if the - * expansion is "0" (zero), "false" or "" (empty) - * then the expansion has the value FALSE. - * Otherwise the expansion has the value TRUE - * or - * -f FILENAME - * Test if the file FILENAME exists - * or - * -k - * Test if "autoclean" (i.e. called from the kernel) - * or - * ! EXPRESSION - * A negated expression is also an expression - * - * if EXPRESSION - * any config line - * ... - * elseif EXPRESSION - * any config line - * ... - * else - * any config line - * ... - * endif - * - * The else and elseif keywords are optional. - * "if"-statements nest up to 20 levels. - */ - - state[0] = 1; - - if (force_ver) - version = force_ver; - else - version = uts_info.release; - - config_version = xstrdup(version); - - /* Only read the default entries on the first file */ - if (depth == 0) { - maxpath = 100; - modpath = (struct PATH_TYPE *)xmalloc(maxpath * sizeof(struct PATH_TYPE)); - nmodpath = 0; - - maxexecs = 10; - execs = (struct EXEC_TYPE *)xmalloc(maxexecs * sizeof(struct EXEC_TYPE)); - nexecs = 0; - - /* - * Build predef options - */ - if (all && optlist[0]) - n_opt_list = build_list(optlist, &opt_list, version, 1); - - /* - * Build predef above - */ - if (all && above[0]) - n_abovelist = build_list(above, &abovelist, version, 0); - - /* - * Build predef below - */ - if (all && below[0]) - n_belowlist = build_list(below, &belowlist, version, 0); - - /* - * Build predef prune list - */ - if (prune[0]) - n_prunelist = build_list(prune, &prunelist, version, 0); - - /* - * Build predef aliases - */ - if (all && aliaslist[0]) - n_aliases = build_list(aliaslist, &aliases, version, 0); - - /* Order and priority is now: (MODPATH + modules.conf) || (predefs + modules.conf) */ - if ((envpath = getenv("MODPATH")) != NULL && !safemode) { - size_t len; - char *p; - char *path; - - /* Make a copy so's we can mung it with strtok. */ - len = strlen(envpath) + 1; - p = alloca(len); - memcpy(p, envpath, len); - path = alloca(PATH_MAX); - - for (p = strtok(p, ":"); p != NULL; p = strtok(NULL, ":")) { - len = snprintf(path, PATH_MAX, p, version); - modpath[nmodpath].path = xstrdup(path); - if ((type = strrchr(path, '/')) != NULL) - type += 1; - else - type = "misc"; - modpath[nmodpath].type = xstrdup(type); - if (++nmodpath >= maxpath) { - maxpath += 100; - modpath = (struct PATH_TYPE *)xrealloc(modpath, - maxpath * sizeof(struct PATH_TYPE)); - } - - } - } else { - /* - * Build the default "path[type]" configuration - */ - int n; - char *k; - - /* The first entry in the path list */ - modpath[nmodpath].type = xstrdup("boot"); - snprintf(tmpline, sizeof(tmpline), "%s/lib/modules/boot", base_dir); - modpath[nmodpath].path = xstrdup(tmpline); - ++nmodpath; - - /* The second entry in the path list, `uname -r` */ - modpath[nmodpath].type = xstrdup("toplevel"); - snprintf(tmpline, sizeof(tmpline), "%s/lib/modules/%s", base_dir, version); - modpath[nmodpath].path = xstrdup(tmpline); - ++nmodpath; - - /* The third entry in the path list, `kernelversion` */ - modpath[nmodpath].type = xstrdup("toplevel"); - for (n = 0, k = version; *k; ++k) { - if (*k == '.' && ++n == 2) - break; - } - snprintf(tmpline, sizeof(tmpline), "%s/lib/modules/%.*s", base_dir, - (/* typecast for Alpha */ int)(k - version), version); - modpath[nmodpath].path = xstrdup(tmpline); - ++nmodpath; - - /* The rest of the entries in the path list */ - for (pathp = tbpath; *pathp; ++pathp) { - char **type; - - for (type = tbtype; *type; ++type) { - char path[PATH_MAX]; - - snprintf(path, sizeof(path), "%s%s/%s", base_dir, *pathp, *type); - if (meta_expand(path, &g, NULL, version, ME_ALL)) - return -1; - - for (glb = g.pathv; glb && *glb; ++glb) { - modpath[nmodpath].type = xstrdup(*type); - modpath[nmodpath].path = *glb; - if (++nmodpath >= maxpath) { - maxpath += 100; - modpath = (struct PATH_TYPE *)xrealloc(modpath, - maxpath * sizeof(struct PATH_TYPE)); - } - } - } - } - } - - /* Environment overrides for testing only, undocumented */ - for (i = 0; i < gen_file_count; ++i) - gen_file_env(gen_file+i); - - } /* End of depth == 0 */ - - if (conf_file || - ((conf_file = getenv("MODULECONFIG")) != NULL && *conf_file && !safemode)) { - if (!(fin = fopen(conf_file, "r"))) { - error("Can't open %s", conf_file); - return -1; - } - conf_file_specified = 1; - } else { - if (!(fin = fopen((conf_file = ETC_MODULES_CONF), "r"))) { - /* Fall back to non-standard name */ - if ((fin = fopen((conf_file = old_name), "r"))) { - fprintf(stderr, - "Warning: modutils is reading from %s because\n" - " %s does not exist. The use of %s is\n" - " deprecated, please rename %s to %s\n" - " as soon as possible. Command\n" - " mv %s %s\n", - old_name, ETC_MODULES_CONF, - old_name, old_name, ETC_MODULES_CONF, - old_name, ETC_MODULES_CONF); - } - /* So what... use the default configuration */ - } - } - - if (fin) { - struct stat statbuf1, statbuf2; - if (fstat(fileno(fin), &statbuf1) == 0) - config_mtime = statbuf1.st_mtime; - config_file = xstrdup(conf_file); /* Save name actually used */ - if (!conf_file_specified && - stat(ETC_MODULES_CONF, &statbuf1) == 0 && - stat(old_name, &statbuf2) == 0) { - /* Both /etc files exist */ - if (statbuf1.st_dev == statbuf2.st_dev && - statbuf1.st_ino == statbuf2.st_ino) { - if (lstat(ETC_MODULES_CONF, &statbuf1) == 0 && - S_ISLNK(statbuf1.st_mode)) - fprintf(stderr, - "Warning: You do not need a link from %s to\n" - " %s. The use of %s is deprecated,\n" - " please remove %s and rename %s\n" - " to %s as soon as possible. Commands.\n" - " rm %s\n" - " mv %s %s\n", - ETC_MODULES_CONF, old_name, - old_name, ETC_MODULES_CONF, old_name, ETC_MODULES_CONF, - ETC_MODULES_CONF, - old_name, ETC_MODULES_CONF); - else { -#ifndef NO_WARN_ON_OLD_LINK - fprintf(stderr, - "Warning: You do not need a link from %s to\n" - " %s. The use of %s is deprecated,\n" - " please remove %s as soon as possible. Command\n" - " rm %s\n", - old_name, ETC_MODULES_CONF, - old_name, old_name, - old_name); -#endif - } - } - else - fprintf(stderr, - "Warning: modutils is reading from %s and\n" - " ignoring %s. The use of %s is deprecated,\n" - " please remove %s as soon as possible. Command\n" - " rm %s\n", - ETC_MODULES_CONF, old_name, - old_name, old_name, - old_name); - } - } - - /* - * Finally, decode the file - */ - while (fin && fgets_strip(buf, sizeof(buf) - 1, fin, &lineno) != NULL) { - char *arg2; - char *parm = buf; - char *arg; - int one_err = 0; - int adding; - - while (isspace(*parm)) - parm++; - - if (strncmp(parm, "add", 3) == 0) { - adding = 1; - parm += 3; - while (isspace(*parm)) - parm++; - } else - adding = 0; - - arg = parm; - - if (*parm == '\0') - continue; - - one_err = 1; - - while (*arg > ' ' && *arg != '=') - arg++; - - if (*arg == '=') - assgn = 1; - else - assgn = 0; - *arg++ = '\0'; - while (isspace(*arg)) - arg++; - - /* - * endif - */ - if (!assgn && strcmp(parm, "endif") == 0) { - if (level > 0) - --level; - else { - error("unmatched endif in line %d", lineno); - return -1; - } - continue; - } - - /* - * else - */ - if (!assgn && strcmp(parm, "else") == 0) { - if (level <= 0) { - error("else without if in line %d", lineno); - return -1; - } - state[level] = !state[level]; - continue; - } - - /* - * elseif - */ - if (!assgn && strcmp(parm, "elseif") == 0) { - if (level <= 0) { - error("elseif without if in line %d", lineno); - return -1; - } - if (state[level] != 0) { - /* - * We have already found a TRUE - * if statement in this "chain". - * That's what "2" means. - */ - state[level] = 2; - continue; - } - /* else: No TRUE if has been found, cheat */ - /* - * The "if" handling increments level, - * but this is the _same_ level as before. - * So, compensate for it. - */ - --level; - parm = "if"; - /* Fallthru to "if" */ - } - - /* - * if - */ - if (strcmp(parm, "if") == 0) { - char *cmp; - int not = 0; - int numeric = 0; - - if (level >= MAX_LEVEL) { - error("Too many nested if's in line %d\n", lineno); - return -1; - } - state[++level] = 0; /* default false */ - - if (*arg == '!') { - not = 1; - arg = next_word(arg); - } - - if (strncmp(arg, "-k", 2) == 0) { - state[level] = flag_autoclean; - continue; - } - - if (strncmp(arg, "-f", 2) == 0) { - char *file = next_word(arg); - meta_expand(file, &g, NULL, version, ME_ALL); - if (access(g.pathc ? g.pathv[0] : file, R_OK) == 0) - state[level] = !not; - else - state[level] = not; - continue; - } - - if (strncmp(arg, "-n", 2) == 0) { - numeric = 1; - arg = next_word(arg); - } - - - cmp = next_word(arg); - if (*cmp) { - GLOB_LIST g2; - long n1 = 0; - long n2 = 0; - char *w1 = ""; - char *w2 = ""; - - arg2 = next_word(cmp); - - meta_expand(arg, &g, NULL, version, ME_ALL); - if (g.pathc && g.pathv[0]) - w1 = g.pathv[0]; - - meta_expand(arg2, &g2, NULL, version, ME_ALL); - if (g2.pathc && g2.pathv[0]) - w2 = g2.pathv[0]; - - if (numeric) { - n1 = strtol(w1, NULL, 0); - n2 = strtol(w2, NULL, 0); - } - - if (strcmp(cmp, "==") == 0 || - strcmp(cmp, "=") == 0) { - if (numeric) - state[level] = (n1 == n2); - else - state[level] = strcmp(w1, w2) == 0; - } else if (strcmp(cmp, "!=") == 0) { - if (numeric) - state[level] = (n1 != n2); - else - state[level] = strcmp(w1, w2) != 0; - } else if (strcmp(cmp, ">=") == 0) { - if (numeric) - state[level] = (n1 >= n2); - else - state[level] = strcmp(w1, w2) >= 0; - } else if (strcmp(cmp, "<=") == 0) { - if (numeric) - state[level] = (n1 <= n2); - else - state[level] = strcmp(w1, w2) <= 0; - } else if (strcmp(cmp, ">") == 0) { - if (numeric) - state[level] = (n1 > n2); - else - state[level] = strcmp(w1, w2) > 0; - } else if (strcmp(cmp, "<") == 0) { - if (numeric) - state[level] = (n1 < n2); - else - state[level] = strcmp(w1, w2) < 0; - } - } else { /* Check defined value, if any */ - /* undef or defined as - * "" or "0" or "false" => false - * defined => true - */ - if (!meta_expand(arg, &g, NULL, version, ME_ALL) && - g.pathc > 0 && - strcmp(g.pathv[0], "0") != 0 && - strcmp(g.pathv[0], "false") != 0 && - strlen(g.pathv[0]) != 0) - state[level] = 1; /* true */ - } - if (not) - state[level] = !state[level]; - - continue; - } - - /* - * Should we bother? - */ - if (state[level] != 1) - continue; - - /* - * define - */ - if (!assgn && strcmp(parm, "define") == 0) { - char env[PATH_MAX]; - - arg2 = next_word(arg); - meta_expand(arg2, &g, NULL, version, ME_ALL); - snprintf(env, sizeof(env), "%s=%s", arg, (g.pathc ? g.pathv[0] : "")); - putenv(env); - one_err = 0; - } - - /* - * include - */ - if (!assgn && strcmp(parm, "include") == 0) { - meta_expand(arg, &g, NULL, version, ME_ALL); - - if (!do_read(all, version, base_dir, g.pathc ? g.pathv[0] : arg, depth+1)) - one_err = 0; - else - error("include %s failed\n", arg); - } - - /* - * above - */ - else if (all && !assgn && strcmp(parm, "above") == 0) { - decode_list(&n_abovelist, &abovelist, arg, adding, version, 0); - one_err = 0; - } - - /* - * below - */ - else if (all && !assgn && strcmp(parm, "below") == 0) { - decode_list(&n_belowlist, &belowlist, arg, adding, version, 0); - one_err = 0; - } - - /* - * prune - */ - else if (all && !assgn && strcmp(parm, "prune") == 0) { - decode_list(&n_prunelist, &prunelist, arg, adding, version, 0); - one_err = 0; - } - - /* - * probe - */ - else if (all && !assgn && strcmp(parm, "probe") == 0) { - decode_list(&n_probe_list, &probe_list, arg, adding, version, 0); - one_err = 0; - } - - /* - * probeall - */ - else if (all && !assgn && strcmp(parm, "probeall") == 0) { - decode_list(&n_probeall_list, &probeall_list, arg, adding, version, 0); - one_err = 0; - } - - /* - * options - */ - else if (all && !assgn && strcmp(parm, "options") == 0) { - decode_list(&n_opt_list, &opt_list, arg, adding, version, 1); - one_err = 0; - } - - /* - * alias - */ - else if (all && !assgn && strcmp(parm, "alias") == 0) { - /* - * Replace any previous (default) definitions - * for the same module - */ - decode_list(&n_aliases, &aliases, arg, 0, version, 0); - one_err = 0; - } - - /* - * Specification: /etc/modules.conf - * The format of the commands in /etc/modules.conf are: - * - * pre-install module command - * install module command - * post-install module command - * pre-remove module command - * remove module command - * post-remove module command - * - * The different words are separated by tabs or spaces. - */ - /* - * pre-install - */ - else if (all && !assgn && (strcmp(parm, "pre-install") == 0)) { - decode_exec(arg, EXEC_PRE_INSTALL); - one_err = 0; - } - - /* - * install - */ - else if (all && !assgn && (strcmp(parm, "install") == 0)) { - decode_exec(arg, EXEC_INSTALL); - one_err = 0; - } - - /* - * post-install - */ - else if (all && !assgn && (strcmp(parm, "post-install") == 0)) { - decode_exec(arg, EXEC_POST_INSTALL); - one_err = 0; - } - - /* - * pre-remove - */ - else if (all && !assgn && (strcmp(parm, "pre-remove") == 0)) { - decode_exec(arg, EXEC_PRE_REMOVE); - one_err = 0; - } - - /* - * remove - */ - else if (all && !assgn && (strcmp(parm, "remove") == 0)) { - decode_exec(arg, EXEC_REMOVE); - one_err = 0; - } - - /* - * post-remove - */ - else if (all && !assgn && (strcmp(parm, "post-remove") == 0)) { - decode_exec(arg, EXEC_POST_REMOVE); - one_err = 0; - } - - /* - * insmod_opt= - */ - else if (assgn && (strcmp(parm, "insmod_opt") == 0)) { - insmod_opt = xstrdup(arg); - one_err = 0; - } - - /* - * keep - */ - else if (!assgn && (strcmp(parm, "keep") == 0)) { - drop_default_paths = 0; - one_err = 0; - } - - /* - * path...= - */ - else if (assgn && strncmp(parm, "path", 4) == 0) { - /* - * Specification: config file / path parameter - * The path parameter specifies a directory to - * search for modules. - * This parameter may be repeated multiple times. - * - * Note that the actual path may be defined using - * wildcards and other shell meta-chars, such as "*?`". - * For example: - * path[misc]=/lib/modules/1.1.5?/misc - * - * Optionally the path keyword carries a tag. - * This tells us a little more about the purpose of - * this directory and allows some automated operations. - * A path is marked with a tag by adding the tag, - * enclosed in square brackets, to the path keyword: - * # - * path[boot]=/lib/modules/boot - * # - * This case identifies the path a of directory - * holding modules loadable a boot time. - */ - - if (drop_default_paths) { - int n; - - /* - * Specification: config file / path / default - * - * Whenever there is a path[] specification - * in the config file, all the default - * path are reset. - * - * If one instead wants to _add_ to the default - * set of paths, one has to have the option - * keep - * before the first path[]-specification line - * in the configuration file. - */ - drop_default_paths = 0; - for (n = 0; n < nmodpath; n++) { - free(modpath[n].path); - free(modpath[n].type); - } - nmodpath = 0; - } - - /* - * Get (the optional) tag - * If the tag is missing, the word "misc" - * is assumed. - */ - type = "misc"; - - if (parm[4] == '[') { - char *pt_type = parm + 5; - - while (*pt_type != '\0' && *pt_type != ']') - pt_type++; - - if (*pt_type == ']' && pt_type[1] == '\0') { - *pt_type = '\0'; - type = parm + 5; - } /* else CHECKME */ - } - - /* - * Handle the actual path description - */ - if (meta_expand(arg, &g, base_dir, version, ME_ALL)) - return -1; - for (glb = g.pathv; glb && *glb; ++glb) { - modpath[nmodpath].type = xstrdup(type); - modpath[nmodpath].path = *glb; - if (++nmodpath >= maxpath) { - maxpath += 100; - modpath = (struct PATH_TYPE *)xrealloc(modpath, - maxpath * sizeof(struct PATH_TYPE)); - } - } - one_err = 0; - } - - /* - * persistdir - */ - else if (assgn && strcmp(parm, "persistdir") == 0) { - meta_expand(arg, &g, NULL, version, ME_ALL); - persistdir = xstrdup(g.pathc ? g.pathv[0] : arg); - one_err = 0; - } - - /* Names for generated files in config file */ - for (i = 0; one_err && i < gen_file_count; ++i) - one_err = gen_file_conf(gen_file+i, assgn, parm, arg); - - /* - * any errors so far? - */ - if (all == 0) - one_err = 0; - else if (one_err) { - error("Invalid line %d in %s\n\t%s", - lineno, conf_file, buf); - ret = -1; - } - } - if (fin) - fclose(fin); - - if (level) { - error("missing endif at %s EOF", conf_file); - ret = -1; - } - - if (ret) - return ret; - /* else */ - - /* Check we have names for generated files */ - for (i = 0; !ret && i < gen_file_count; ++i) - ret = gen_file_check(gen_file+i, &g, base_dir, version); - - return ret; -} - -int config_read(int all, char *force_ver, char *base_dir, char *conf_file) -{ - int r; - if (modpath != NULL) - return 0; /* already initialized */ - - if (uname(&uts_info) < 0) { - error("Failed to find kernel name information"); - return -1; - } - - r = do_read(all, force_ver, base_dir, conf_file, 0); - - if (quick && !r && !need_update (force_ver, base_dir)) - exit (0); - - return r; -} - -/****************************************************************************/ -/* - * FIXME: Far too much global state. KAO. - */ -static int found; -static int favail; -static int one_only; -static int meta_expand_type; -char **list; -static const char *filter_by_file; -static char *filter_by_dir; - -/* - * Add a file name if it exist - */ -static int config_add(const char *file, const struct stat *sb) -{ - int i; - int npaths = 0; - char **paths = NULL; - - if (meta_expand_type) { - GLOB_LIST g; - char **p; - char full[PATH_MAX]; - - snprintf(full, sizeof(full), "%s/%s", file, filter_by_file); - - if (filter_by_dir && !strstr(full, filter_by_dir)) - return 0; - - if (meta_expand(full, &g, NULL, config_version, meta_expand_type)) - return 1; - for (p = g.pathv; p && *p; ++p) { - paths = (char **)xrealloc(paths, - (npaths + 1) * sizeof(char *)); - paths[npaths++] = *p; - } - } else { /* normal path match or match with "*" */ - if (!S_ISREG(sb->st_mode)) - return 0; - - if (strcmp(filter_by_file, "*")) { - char *p; - - if ((p = strrchr(file, '/')) == NULL) - p = (char *)file; - else - p += 1; - - if (strcmp(p, filter_by_file)) - return 0; - } - if (filter_by_dir && !strstr(file, filter_by_dir)) - return 0; - paths = (char **)xmalloc(sizeof(char **)); - *paths = xstrdup(file); - npaths = 1; - } - - for (i = 0; i < npaths; ++i) { - struct stat sbuf; - - if (S_ISDIR(sb->st_mode)) { - if (stat(paths[i], &sbuf) == 0) - sb = &sbuf; - } - if (S_ISREG(sb->st_mode) && sb->st_mode & S_IRUSR) { - int j; - char **this; - - if (!root_check_off) { - if (sb->st_uid != 0) { - error("%s is not owned by root", paths[i]); - continue; - } - } - - /* avoid duplicates */ - for (j = 0, this = list; j < found; ++j, ++this) { - if (strcmp(*this, paths[i]) == 0) { - free(paths[i]); - goto next; - } - } - - list[found] = paths[i]; - if (++found >= favail) - list = (char **)xrealloc(list, - (favail += 100) * sizeof(char *)); - - if (one_only) { - for (j = i + 1; j < npaths; ++j) - free(paths[j]); - free(paths); - return 1; /* finish xftw */ - } - } - next: - } - - if (npaths > 0) - free(paths); - - return 0; -} - -/* - * Find modules matching the name "match" in directory of type "type" - * (type == NULL matches all) - * - * Return a pointer to the list of modules found (or NULL if error). - * Update the counter (sent as parameter). - */ -GLOB_LIST *config_lstmod(const char *match, const char *type, int first_only) -{ - /* - * Note: - * There are _no_ wildcards remaining in the path descriptions! - */ - struct stat sb; - int i; - int ret = 0; - char *path = NULL; - char this[PATH_MAX]; - - if (!match) - match = "*"; - one_only = first_only; - found = 0; - filter_by_file = match; - filter_by_dir = NULL; - if (type) { - char tmpdir[PATH_MAX]; - snprintf(tmpdir, sizeof(tmpdir), "/%s/", type); - filter_by_dir = xstrdup(tmpdir); - } - /* In safe mode, the module name is always handled as is, without meta - * expansion. It might have come from an end user via kmod and must - * not be trusted. Even in unsafe mode, only apply globbing to the - * module name, not command expansion. We trust config file input so - * applying command expansion is safe, we do not trust command line input. - * This assumes that the only time the user can specify -C config file - * is when they run under their own authority. In particular all - * mechanisms that call modprobe as root on behalf of the user must - * run in safe mode, without letting the user supply a config filename. - */ - meta_expand_type = 0; - if (strpbrk(match, SHELL_META) && strcmp(match, "*") && !safemode) - meta_expand_type = ME_GLOB|ME_BUILTIN_COMMAND; - - list = (char **)xmalloc((favail = 100) * sizeof(char *)); - - for (i = 0; i < nmodpath; i++) { - path = modpath[i].path; - /* Special case: insmod: handle single, non-wildcard match */ - if (first_only && strpbrk(match, SHELL_META) == NULL) { - /* Fix for "2.1.121 syntax */ - snprintf(this, sizeof(this), "%s/%s/%s", path, - modpath[i].type, match); - if (stat(this, &sb) == 0 && - config_add(this, &sb)) - break; - /* End fix for "2.1.121 syntax */ - - snprintf(this, sizeof(this), "%s/%s", path, match); - if (stat(this, &sb) == 0 && - config_add(this, &sb)) - break; - } - - /* Start looking */ - if ((ret = xftw(path, config_add))) { - break; - } - } - if (ret >= 0) { - GLOB_LIST *g = (GLOB_LIST *)xmalloc(sizeof(GLOB_LIST)); - g->pathc = found; - g->pathv = list; - free(filter_by_dir); - return g; - } - free(list); - free(filter_by_dir); - return NULL; -} - -/* Given a bare module name, poke through the module path to find the file. */ -char *search_module_path(const char *base) -{ - GLOB_LIST *g; - - if (config_read(0, NULL, "", NULL) < 0) - return NULL; - /* else */ - g = config_lstmod(base, NULL, 1); - if (g == NULL || g->pathc == 0) { - char base_o[PATH_MAX]; - - snprintf(base_o, sizeof(base_o), "%s.o", base); - g = config_lstmod(base_o, NULL, 1); -#ifdef CONFIG_USE_ZLIB - if (g == NULL || g->pathc == 0) { - snprintf(base_o, sizeof(base_o), "%s.o.gz", base); - g = config_lstmod(base_o, NULL, 1); - } -#endif - } - if (g == NULL || g->pathc == 0) - return NULL; - /* else */ - return g->pathv[0]; -} |