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- /*
- * Delete a MSDOS file
- *
- * Emmet P. Gray US Army, HQ III Corps & Fort Hood
- * ...!ihnp4!uiucuxc!fthood!egray Attn: AFZF-DE-ENV
- * Directorate of Engineering & Housing
- * Environmental Management Office
- * Fort Hood, TX 76544-5057
- */
-
- #include <stdio.h>
- #include "msdos.h"
- #define VERBOSE
-
- int fd; /* the file descriptor for the floppy */
- int dir_start; /* starting sector for directory */
- int dir_len; /* length of directory (in sectors) */
- int dir_entries; /* number of directory entries */
- int dir_chain[25]; /* chain of sectors in directory */
- int clus_size; /* cluster size (in sectors) */
- int fat_len; /* length of FAT table (in sectors) */
- int num_clus; /* number of available clusters */
- unsigned char *fatbuf; /* the File Allocation Table */
- char *mcwd; /* the Current Working Directory */
-
- main(argc, argv)
- int argc;
- char *argv[];
- {
- int i, ismatch, entry, start, nogo, subdir();
- char *filename, *newfile, text[4], tname[9], *getname(), *unixname();
- char *strncpy(), *getpath(), *pathname, ans[10];
- void exit();
- struct directory *dir, *search();
-
- if (init(2)) {
- fprintf(stderr, "mdel: Cannot initialize diskette\n");
- exit(1);
- }
-
- if (argc < 2) {
- fprintf(stderr, "Usage: mdel <MSDOS file> [<MSDOS files...>]\n");
- exit(1);
- }
-
- for (i=1; i<argc; i++) {
- filename = getname(argv[i]);
- pathname = getpath(argv[i]);
- if (subdir(pathname))
- continue;
- nogo = 0;
- ismatch = 0;
- for (entry=0; entry<dir_entries; entry++) {
- dir = search(entry);
- /* if empty */
- if (dir->name[0] == NULL)
- break;
- /* if erased */
- if (dir->name[0] == 0xe5)
- continue;
- /* if dir or volume lable */
- if ((dir->attr & 0x10) || (dir->attr & 0x08))
- continue;
- strncpy(tname, dir->name, 8);
- strncpy(text, dir->ext, 3);
- newfile = unixname(tname, text);
- /* see it if matches the pattern */
- if (match(newfile, filename)) {
- #ifdef VERBOSE
- printf("Removing %s\n", newfile);
- #endif
- ismatch = 1;
- if (dir->attr & 0x01) {
- while (!nogo) {
- printf("mdel: '%s' is read only, erase anyway (y/n) ? ", newfile);
- gets(ans);
- if (ans[0] == 'y' || ans[0] == 'Y')
- break;
- if (ans[0] == 'n' || ans[0] == 'N')
- nogo = 1;
- }
- if (nogo)
- continue;
- }
- start = dir->start[1]*0x100 + dir->start[0];
- zapit(start);
- dir->name[0] = 0xe5;
- writedir(entry, dir);
- }
- }
- if (!ismatch) {
- fprintf(stderr, "mdel: File '%s' not found\n", filename);
- continue;
- }
- }
- /* update the FAT sectors */
- writefat();
- close(fd);
- exit(0);
- }
-