277 lines
8.9 KiB
C
277 lines
8.9 KiB
C
/*
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* moduleinfo.c - module info functionality
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*
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* Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author(s): Erik Troan <ewt@redhat.com>
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* Matt Wilson <msw@redhat.com>
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*/
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#include <alloca.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <stdio.h>
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#include "moduleinfo.h"
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struct moduleInfo * getModuleList(moduleInfoSet mis,
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enum driverMajor major) {
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struct moduleInfo * miList, * next;
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int i;
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next = miList = malloc(sizeof(*miList) * mis->numModules + 1);
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for (i = 0; i < mis->numModules; i++) {
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if (mis->moduleList[i].major == major || major == DRIVER_NONE) {
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*next = mis->moduleList[i];
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next++;
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}
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}
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if (next == miList) {
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free(next);
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return NULL;
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}
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next->moduleName = NULL;
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next++;
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miList = realloc(miList, sizeof(*miList) * (next - miList));
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return miList;
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}
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struct moduleInfo * findModuleInfo(moduleInfoSet mis,
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const char * moduleName) {
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int i;
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struct moduleInfo * found = NULL;
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for (i = 0; i < mis->numModules; i++) {
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if (!strcmp(moduleName, mis->moduleList[i].moduleName)) {
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if (!found)
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found = mis->moduleList + i;
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else if (found->locationID && !mis->moduleList[i].locationID)
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;
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else
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found = mis->moduleList + i;
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}
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}
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return found;
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}
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moduleInfoSet newModuleInfoSet(void) {
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return calloc(sizeof(struct moduleInfoSet_s), 1);
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}
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/* filename: file to read module-info from
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* mis: moduleInfoSet
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* location: moduleBallLocation struct describing the location of
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* these modules. (may be NULL)
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* override: 1 if modules from this module ball should override old ones
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* of the same name.
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*/
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int readModuleInfo(const char * filename, moduleInfoSet mis,
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void * location, int override) {
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int fd, isIndented;
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char * buf, * start, * next = NULL, * chptr;
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struct stat sb;
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char oldch;
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struct moduleInfo * nextModule;
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int modulesAlloced;
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int i;
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int found = 0, skipModule = 0;
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fd = open(filename, O_RDONLY);
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if (fd < 0) return -1;
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fstat(fd, &sb);
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buf = alloca(sb.st_size + 1);
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i = read(fd, buf, sb.st_size);
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buf[sb.st_size] = '\0';
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close(fd);
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if (i != sb.st_size)
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return -1;
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nextModule = NULL;
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modulesAlloced = mis->numModules;
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if (strncmp(buf, "Version 0\n", 10)) return -1;
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start = buf + 10;
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while (start && *start) {
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chptr = strchr(start, '\n');
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if (chptr) {
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/* slice and dice */
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next = chptr + 1;
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} else {
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chptr += strlen(start) - 1;
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}
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chptr--;
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while (isspace(*chptr)) chptr--;
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chptr++;
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*chptr = '\0';
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isIndented = 0;
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if (isspace(*start)) {
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while (isspace(*start) && *start != '\n') start++;
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isIndented = 1;
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}
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if (*start != '\n' && *start && *start != '#') {
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if (!isIndented) {
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if (nextModule && nextModule->moduleName &&
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nextModule == (mis->moduleList + mis->numModules)) {
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mis->numModules++;
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}
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if (mis->numModules == modulesAlloced) {
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modulesAlloced += 5;
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mis->moduleList = realloc(mis->moduleList,
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modulesAlloced * sizeof(*mis->moduleList));
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}
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nextModule = NULL;
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found = 0;
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skipModule = 0;
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for (i = 0; i < mis->numModules; i++) {
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if (!strcmp(mis->moduleList[i].moduleName, start)) {
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if (override)
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nextModule = mis->moduleList + i;
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else
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skipModule = 1;
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found = 1;
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break;
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}
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}
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if (!found && !nextModule) {
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nextModule = mis->moduleList + mis->numModules;
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nextModule->moduleName = strdup(start);
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}
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if (nextModule) {
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nextModule->major = DRIVER_NONE;
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nextModule->minor = DRIVER_MINOR_NONE;
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nextModule->description = NULL;
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nextModule->flags = 0;
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nextModule->args = NULL;
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nextModule->numArgs = 0;
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nextModule->locationID = location;
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}
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} else if (!nextModule && skipModule) {
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/* we're skipping this one (not overriding), do nothing */
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} else if (!nextModule && skipModule) {
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/* ACK! syntax error */
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fprintf(stderr, "module-info syntax error in %s\n", filename);
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return 1;
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} else if (nextModule->major == DRIVER_NONE) {
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chptr = start + strlen(start) - 1;
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while (!isspace(*chptr) && chptr > start) chptr--;
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if (chptr != start) chptr++;
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if (!strcmp(chptr, "eth")) {
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nextModule->major = DRIVER_NET;
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nextModule->minor = DRIVER_MINOR_ETHERNET;
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} else if (!strcmp(chptr, "tr")) {
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nextModule->major = DRIVER_NET;
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nextModule->minor = DRIVER_MINOR_TR;
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} else if (!strcmp(chptr, "scsi_hostadapter") ||
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!strcmp(chptr, "scsi")) {
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nextModule->major = DRIVER_SCSI;
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} else if (!strcmp(chptr, "pcmcia")) {
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nextModule->major = DRIVER_PCMCIA;
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} else if (!strcmp(chptr, "fs")) {
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nextModule->major = DRIVER_FS;
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} else if (!strcmp(chptr, "cdrom")) {
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nextModule->major = DRIVER_CDROM;
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} else if (!strcmp(chptr, "ide")) {
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nextModule->major = DRIVER_IDE;
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} else {
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nextModule->major = DRIVER_OTHER;
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}
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} else if (!nextModule->description) {
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chptr = start + strlen(start) - 1;
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if (*start == '"' && *chptr == '"') {
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start++;
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*chptr = '\0';
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nextModule->description = strdup(start);
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}
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} else {
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nextModule->args = realloc(nextModule->args,
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sizeof(*nextModule->args) * (nextModule->numArgs + 1));
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chptr = start;
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while (!isspace(*chptr) && *chptr) chptr++;
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if (*chptr) {
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oldch = *chptr;
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*chptr = '\0';
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nextModule->args[nextModule->numArgs].arg = strdup(start);
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start = chptr + 1;
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while (*start && isspace(*start)) start++;
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if (*start == '"') {
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start++;
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chptr = strchr(start, '"');
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if (chptr) {
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*chptr = '\0';
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nextModule->args[nextModule->numArgs].description =
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strdup(start);
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nextModule->numArgs++;
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}
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}
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}
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}
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}
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start = next;
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}
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/* do we need to add in this last module? */
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if (nextModule && ((nextModule - mis->moduleList) == mis->numModules))
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mis->numModules++;
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return 0;
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}
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void freeModuleInfoSet(moduleInfoSet mis) {
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int i, j;
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for (i = 0; i < mis->numModules; i++) {
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if (mis->moduleList[i].moduleName)
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free(mis->moduleList[i].moduleName);
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if (mis->moduleList[i].description)
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free(mis->moduleList[i].description);
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for (j = 0; i < mis->moduleList[i].numArgs; j++) {
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if (mis->moduleList[i].args[j].arg)
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free(mis->moduleList[i].args[j].arg) ;
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if (mis->moduleList[i].args[j].description)
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free(mis->moduleList[i].args[j].description) ;
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}
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}
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free(mis);
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}
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