1 static char *sccsid = "@(#)rm.c 4.6 (Berkeley) 02/28/82"; 2 int errcode; 3 4 #include <stdio.h> 5 #include <sys/types.h> 6 #include <sys/stat.h> 7 #include <ndir.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 26 /* 27 * all files following a null option are considered file names 28 */ 29 if (*(arg+1) == '\0') break; 30 31 while(*++arg != '\0') 32 switch(*arg) { 33 case 'f': 34 fflg++; 35 break; 36 case 'i': 37 iflg++; 38 break; 39 case 'r': 40 rflg++; 41 break; 42 default: 43 printf("rm: unknown option %s\n", *argv); 44 exit(1); 45 } 46 } 47 while(--argc > 0) { 48 if(!strcmp(*++argv, "..")) { 49 fprintf(stderr, "rm: cannot remove `..'\n"); 50 continue; 51 } 52 rm(*argv, fflg, rflg, iflg, 0); 53 } 54 55 exit(errcode); 56 } 57 58 rm(arg, fflg, rflg, iflg, level) 59 char arg[]; 60 { 61 struct stat buf; 62 struct direct *dp; 63 DIR *dirp; 64 char name[BUFSIZ]; 65 int d; 66 67 if(stat(arg, &buf)) { 68 if (fflg==0) { 69 printf("rm: %s nonexistent\n", arg); 70 ++errcode; 71 } 72 return; 73 } 74 if ((buf.st_mode&S_IFMT) == S_IFDIR) { 75 if(rflg) { 76 if (access(arg, 02) < 0) { 77 if (fflg==0) 78 printf("%s not changed\n", arg); 79 errcode++; 80 return; 81 } 82 if(iflg && level!=0) { 83 printf("remove directory %s? ", arg); 84 if(!yes()) 85 return; 86 } 87 if((dirp = opendir(arg)) == NULL) { 88 printf("rm: cannot read %s?\n", arg); 89 exit(1); 90 } 91 while((dp = readdir(dirp)) != NULL) { 92 if(dp->d_ino != 0 && !dotname(dp->d_name)) { 93 sprintf(name, "%s/%s", arg, dp->d_name); 94 rm(name, fflg, rflg, iflg, level+1); 95 } 96 } 97 closedir(dirp); 98 errcode += rmdir(arg, iflg); 99 return; 100 } 101 printf("rm: %s directory\n", arg); 102 ++errcode; 103 return; 104 } 105 106 if(iflg) { 107 printf("rm: remove %s? ", arg); 108 if(!yes()) 109 return; 110 } 111 else if(!fflg) { 112 if (access(arg, 02)<0) { 113 printf("rm: override protection %o for %s? ", buf.st_mode&0777, arg); 114 if(!yes()) 115 return; 116 } 117 } 118 if(unlink(arg) && (fflg==0 || iflg)) { 119 printf("rm: %s not removed\n", arg); 120 ++errcode; 121 } 122 } 123 124 dotname(s) 125 char *s; 126 { 127 if(s[0] == '.') 128 if(s[1] == '.') 129 if(s[2] == '\0') 130 return(1); 131 else 132 return(0); 133 else if(s[1] == '\0') 134 return(1); 135 return(0); 136 } 137 138 rmdir(f, iflg) 139 char *f; 140 { 141 int status, i; 142 143 if(dotname(f)) 144 return(0); 145 if(iflg) { 146 printf("rm: remove %s? ", f); 147 if(!yes()) 148 return(0); 149 } 150 while((i=fork()) == -1) 151 sleep(3); 152 if(i) { 153 wait(&status); 154 return(status); 155 } 156 execl("/bin/rmdir", "rmdir", f, 0); 157 execl("/usr/bin/rmdir", "rmdir", f, 0); 158 printf("rm: can't find rmdir\n"); 159 exit(1); 160 } 161 162 yes() 163 { 164 int i, b; 165 166 i = b = getchar(); 167 while(b != '\n' && b != EOF) 168 b = getchar(); 169 return(i == 'y'); 170 } 171