| 1 | static char *sccsid = "@(#)rm.c 4.1 (Berkeley) 10/1/80"; |
| 2 | int errcode; |
| 3 | |
| 4 | #include <stdio.h> |
| 5 | #include <sys/types.h> |
| 6 | #include <sys/stat.h> |
| 7 | #include <sys/dir.h> |
| 8 | |
| 9 | char *sprintf(); |
| 10 | |
| 11 | main(argc, argv) |
| 12 | char *argv[]; |
| 13 | { |
| 14 | register char *arg; |
| 15 | int fflg, iflg, rflg; |
| 16 | |
| 17 | fflg = 0; |
| 18 | if (isatty(0) == 0) |
| 19 | fflg++; |
| 20 | iflg = 0; |
| 21 | rflg = 0; |
| 22 | while(argc>1 && argv[1][0]=='-') { |
| 23 | arg = *++argv; |
| 24 | argc--; |
| 25 | while(*++arg != '\0') |
| 26 | switch(*arg) { |
| 27 | case 'f': |
| 28 | fflg++; |
| 29 | break; |
| 30 | case 'i': |
| 31 | iflg++; |
| 32 | break; |
| 33 | case 'r': |
| 34 | rflg++; |
| 35 | break; |
| 36 | default: |
| 37 | printf("rm: unknown option %s\n", *argv); |
| 38 | exit(1); |
| 39 | } |
| 40 | } |
| 41 | while(--argc > 0) { |
| 42 | if(!strcmp(*++argv, "..")) { |
| 43 | fprintf(stderr, "rm: cannot remove `..'\n"); |
| 44 | continue; |
| 45 | } |
| 46 | rm(*argv, fflg, rflg, iflg, 0); |
| 47 | } |
| 48 | |
| 49 | exit(errcode); |
| 50 | } |
| 51 | |
| 52 | rm(arg, fflg, rflg, iflg, level) |
| 53 | char arg[]; |
| 54 | { |
| 55 | struct stat buf; |
| 56 | struct direct direct; |
| 57 | char name[100]; |
| 58 | int d; |
| 59 | |
| 60 | if(stat(arg, &buf)) { |
| 61 | if (fflg==0) { |
| 62 | printf("rm: %s nonexistent\n", arg); |
| 63 | ++errcode; |
| 64 | } |
| 65 | return; |
| 66 | } |
| 67 | if ((buf.st_mode&S_IFMT) == S_IFDIR) { |
| 68 | if(rflg) { |
| 69 | if (access(arg, 02) < 0) { |
| 70 | if (fflg==0) |
| 71 | printf("%s not changed\n", arg); |
| 72 | errcode++; |
| 73 | return; |
| 74 | } |
| 75 | if(iflg && level!=0) { |
| 76 | printf("directory %s, remove? ", arg); |
| 77 | if(!yes()) |
| 78 | return; |
| 79 | } |
| 80 | if((d=open(arg, 0)) < 0) { |
| 81 | printf("rm: %s: cannot read\n", arg); |
| 82 | exit(1); |
| 83 | } |
| 84 | while(read(d, (char *)&direct, sizeof(direct)) == sizeof(direct)) { |
| 85 | if(direct.d_ino != 0 && !dotname(direct.d_name)) { |
| 86 | sprintf(name, "%s/%.14s", arg, direct.d_name); |
| 87 | rm(name, fflg, rflg, iflg, level+1); |
| 88 | } |
| 89 | } |
| 90 | close(d); |
| 91 | errcode += rmdir(arg, iflg); |
| 92 | return; |
| 93 | } |
| 94 | printf("rm: %s directory\n", arg); |
| 95 | ++errcode; |
| 96 | return; |
| 97 | } |
| 98 | |
| 99 | if(iflg) { |
| 100 | printf("remove %s? ", arg); |
| 101 | if(!yes()) |
| 102 | return; |
| 103 | } |
| 104 | else if(!fflg) { |
| 105 | if (access(arg, 02)<0) { |
| 106 | printf("%s unwritable (mode %o), remove? ", arg, buf.st_mode&0777); |
| 107 | if(!yes()) |
| 108 | return; |
| 109 | } |
| 110 | } |
| 111 | if(unlink(arg) && (fflg==0 || iflg)) { |
| 112 | printf("rm: %s not removed\n", arg); |
| 113 | ++errcode; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | dotname(s) |
| 118 | char *s; |
| 119 | { |
| 120 | if(s[0] == '.') |
| 121 | if(s[1] == '.') |
| 122 | if(s[2] == '\0') |
| 123 | return(1); |
| 124 | else |
| 125 | return(0); |
| 126 | else if(s[1] == '\0') |
| 127 | return(1); |
| 128 | return(0); |
| 129 | } |
| 130 | |
| 131 | rmdir(f, iflg) |
| 132 | char *f; |
| 133 | { |
| 134 | int status, i; |
| 135 | |
| 136 | if(dotname(f)) |
| 137 | return(0); |
| 138 | if(iflg) { |
| 139 | printf("remove %s? ", f); |
| 140 | if(!yes()) |
| 141 | return(0); |
| 142 | } |
| 143 | while((i=fork()) == -1) |
| 144 | sleep(3); |
| 145 | if(i) { |
| 146 | wait(&status); |
| 147 | return(status); |
| 148 | } |
| 149 | execl("/bin/rmdir", "rmdir", f, 0); |
| 150 | execl("/usr/bin/rmdir", "rmdir", f, 0); |
| 151 | printf("rm: can't find rmdir\n"); |
| 152 | exit(1); |
| 153 | } |
| 154 | |
| 155 | yes() |
| 156 | { |
| 157 | int i, b; |
| 158 | |
| 159 | i = b = getchar(); |
| 160 | while(b != '\n' && b != EOF) |
| 161 | b = getchar(); |
| 162 | return(i == 'y'); |
| 163 | } |