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242
study/linux-travel/MINIX-1.5/1.5/Source/commands/mkproto.c
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242
study/linux-travel/MINIX-1.5/1.5/Source/commands/mkproto.c
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/* mkproto - make an mkfs prototype Author: Andrew Cagney */
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/* Submitted by: cagney@chook.ua.oz (Andrew Cagney - aka Noid) */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <limits.h>
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#include <dirent.h>
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#include <stdlib.h>
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#include <stdio.h>
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/* The default values for the prototype file */
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#define DEF_UID 2 /* bin */
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#define DEF_GID 1 /* daemon group */
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#define DEF_PROT 0555 /* a=re */
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#define DEF_BLOCKS 360
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#define DEF_INODES 63
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#define DEF_INDENTSTR "\t"
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#define major(x) ( (x>>8) & 0377)
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#define minor(x) (x & 0377)
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/* Globals. */
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int count, origlen, tabs;
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int gid, uid, prot, same_uid, same_gid, same_prot, blocks, inodes;
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int block_given, inode_given, dprot;
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char *indentstr;
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char *proto_file, *top;
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FILE *outfile;
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/* For getopt. */
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extern int getopt();
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extern int optind;
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extern char *optarg;
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int i;
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register char *ptr; /* Ptr to *argv in use */
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char *dir;
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struct stat st;
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char op;
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gid = DEF_GID;
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uid = DEF_UID;
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prot = DEF_PROT;
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blocks = DEF_BLOCKS;
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inodes = DEF_INODES;
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indentstr = DEF_INDENTSTR;
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inode_given = 0;
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block_given = 0;
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top = 0;
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same_uid = 0;
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same_gid = 0;
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same_prot = 0;
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while ((op = getopt(argc, argv, "b:g:i:p:t:u:d:s")) != EOF) {
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switch (op) {
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case 'b':
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blocks = atoi(optarg);
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block_given = 1;
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break;
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case 'g':
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gid = atoi(optarg);
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if (gid == 0) usage(argv[0]);
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same_gid = 0;
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break;
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case 'i':
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inodes = atoi(optarg);
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inode_given = 1;
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break;
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case 'p':
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sscanf(optarg, "%o", &prot);
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if (prot == 0) usage(argv[0]);
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same_prot = 0;
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break;
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case 's':
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same_prot = 1;
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same_uid = 1;
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same_gid = 1;
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break;
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case 't': top = optarg; break;
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case 'u':
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uid = atoi(optarg);
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if (uid == 0) usage(argv[0]);
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same_uid = 0;
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break;
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case 'd': indentstr = optarg; break;
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default: /* Illegal options */
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usage(argv[0]);
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}
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}
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if (optind >= argc) {
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usage(argv[0]);
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} else {
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dir = argv[optind];
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optind++;
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proto_file = argv[optind];
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}
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if (!top) top = dir;
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open_outfile();
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if (block_given && !inode_given) inodes = (blocks / 3) + 8;
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if (!block_given && inode_given) usage(argv[0]);
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count = 1;
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tabs = 0;
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origlen = strlen(dir);
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/* Check that it really is a directory */
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stat(dir, &st);
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if ((st.st_mode & S_IFMT) != S_IFDIR) {
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fprintf(stderr, "mkproto: %s must be a directory\n", dir);
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usage(argv[0]);
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}
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fprintf(outfile, "boot\n%d %d\n", blocks, inodes);
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display_attrib("", &st);
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fprintf(outfile, "\n");
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descend(dir);
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fprintf(outfile, "$\n");
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}
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/* Output the prototype spec for this directory. */
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descend(dirname)
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char *dirname;
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{
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struct dirent *dp;
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DIR *dirp;
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char *bs, *name, *newdir, *temp, *tempend;
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int i;
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struct stat st;
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unsigned short mode;
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dirp = opendir(dirname);
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if (dirp == NULL) {
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fprintf(stderr, "unable to open directory %s\n", dirname);
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return;
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}
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tabs++;
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temp = (char *) malloc(sizeof(char) * strlen(dirname) +1 + PATH_MAX);
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strcpy(temp, dirname);
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strcat(temp, "/");
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tempend = &temp[strlen(temp)];
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for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)) {
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name = dp->d_name;
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count++;
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strcpy(tempend, name);
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if (stat(temp, &st) == -1) {
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fprintf(stderr, "cant get status of '%s' \n", temp);
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continue;
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}
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if (name[0] == '.' && (name[1] == 0 || name[1] == '.' && name[2] == 0))
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continue;
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display_attrib(name, &st);
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mode = st.st_mode & S_IFMT;
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if (mode == S_IFDIR) {
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fprintf(outfile, "\n");
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descend(temp);
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for (i = 0; i < tabs; i++) {
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fprintf(outfile, indentstr);
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}
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fprintf(outfile, "$\n");
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continue;
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}
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if (mode == S_IFBLK || mode == S_IFCHR) {
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fprintf(outfile, " %d %d\n", major(st.st_rdev), minor(st.st_rdev));
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continue;
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}
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if (mode == S_IFREG) {
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i = origlen;
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fprintf(outfile, "%s%s", indentstr, top);
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while (temp[i] != '\0') {
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fputc(temp[i], outfile);
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i++;
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}
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fprintf(outfile, "\n");
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continue;
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}
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fprintf(outfile, " /dev/null");
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fprintf(stderr,"File\n\t%s\n has an invalid mode, made empty.\n",temp);
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}
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closedir(dirp);
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free(temp);
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tabs--;
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}
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display_attrib(name, st)
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char *name;
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struct stat *st;
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{
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/* Output the specification for a single file */
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int i;
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if (same_uid) uid = st->st_uid;
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if (same_gid) gid = st->st_gid;
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if (same_prot)
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prot = st->st_mode & 0777; /***** This one is a bit shady *****/
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for (i = 0; i < tabs; i++) fprintf(outfile, indentstr);
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fprintf(outfile, "%s%s%c%c%c%3o %d %d",
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name,
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*name == '\0' ? "" : indentstr, /* stop the tab for a null name */
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(st->st_mode & S_IFMT) == S_IFDIR ? 'd' :
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(st->st_mode & S_IFMT) == S_IFCHR ? 'c' :
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(st->st_mode & S_IFMT) == S_IFBLK ? 'b' :
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'-', /* file type */
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(st->st_mode & S_ISUID) ? 'u' : '-', /* set uid */
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(st->st_mode & S_ISGID) ? 'g' : '-', /* set gid */
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prot,
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uid,
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gid);
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}
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usage(binname)
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char *binname;
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{
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fprintf(stderr, "Usage: %s [options] source_directory [prototype_file]\n", binname);
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fprintf(stderr, "options:\n");
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fprintf(stderr, " -b n\t\t file system size is n blocks (default %d)\n", DEF_BLOCKS);
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fprintf(stderr, " -d STRING\t define the indentation characters (default %s)\n", "(none)");
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fprintf(stderr, " -g n\t\t use n as the gid on all files (default %d)\n", DEF_GID);
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fprintf(stderr, " -i n\t\t file system gets n i-nodes (default %d)\n", DEF_INODES);
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fprintf(stderr, " -p nnn\t use nnn (octal) as mode on all files (default %o)\n", DEF_PROT);
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fprintf(stderr, " -s \t\t use the same uid, gid and mode as originals have\n");
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fprintf(stderr, " -t ROOT\t inital path prefix for each entry\n");
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fprintf(stderr, " -u n\t\t use nnn as the uid on all files (default %d)\n", DEF_UID);
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exit(1);
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}
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open_outfile()
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{
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if (proto_file == NULL)
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outfile = stdout;
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else if ((outfile = fopen(proto_file, "w")) == NULL)
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fprintf(stderr, "Cannot create %s\n ", proto_file);
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}
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