projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 31cef89c | 1 | static char *sccsid = "@(#)rmdir.c 4.1 (Berkeley) 10/1/80"; |
| 9c79dca0 BJ |
2 | /* |
| 3 | * Remove directory | |
| 4 | */ | |
| 5 | ||
| 6 | #include <sys/types.h> | |
| 7 | #include <sys/dir.h> | |
| 8 | #include <sys/stat.h> | |
| 9 | #include <stdio.h> | |
| 10 | ||
| 11 | int Errors = 0; | |
| 12 | char *rindex(); | |
| 13 | char *strcat(); | |
| 14 | char *strcpy(); | |
| 15 | ||
| 16 | main(argc,argv) | |
| 17 | int argc; | |
| 18 | char **argv; | |
| 19 | { | |
| 20 | ||
| 21 | if(argc < 2) { | |
| 22 | fprintf(stderr, "rmdir: arg count\n"); | |
| 23 | exit(1); | |
| 24 | } | |
| 25 | while(--argc) | |
| 26 | rmdir(*++argv); | |
| 27 | exit(Errors!=0); | |
| 28 | } | |
| 29 | ||
| 30 | rmdir(d) | |
| 31 | char *d; | |
| 32 | { | |
| 33 | int fd; | |
| 34 | char *np, name[500]; | |
| 35 | struct stat st, cst; | |
| 36 | struct direct dir; | |
| 37 | ||
| 38 | strcpy(name, d); | |
| 39 | if((np = rindex(name, '/')) == NULL) | |
| 40 | np = name; | |
| 41 | if(stat(name,&st) < 0) { | |
| 42 | fprintf(stderr, "rmdir: %s non-existent\n", name); | |
| 43 | ++Errors; | |
| 44 | return; | |
| 45 | } | |
| 46 | if (stat("", &cst) < 0) { | |
| 47 | fprintf(stderr, "rmdir: cannot stat \"\""); | |
| 48 | ++Errors; | |
| 49 | exit(1); | |
| 50 | } | |
| 51 | if((st.st_mode & S_IFMT) != S_IFDIR) { | |
| 52 | fprintf(stderr, "rmdir: %s not a directory\n", name); | |
| 53 | ++Errors; | |
| 54 | return; | |
| 55 | } | |
| 56 | if(st.st_ino==cst.st_ino &&st.st_dev==cst.st_dev) { | |
| 57 | fprintf(stderr, "rmdir: cannot remove current directory\n"); | |
| 58 | ++Errors; | |
| 59 | return; | |
| 60 | } | |
| 61 | if((fd = open(name,0)) < 0) { | |
| 62 | fprintf(stderr, "rmdir: %s unreadable\n", name); | |
| 63 | ++Errors; | |
| 64 | return; | |
| 65 | } | |
| 66 | while(read(fd, (char *)&dir, sizeof dir) == sizeof dir) { | |
| 67 | if(dir.d_ino == 0) continue; | |
| 68 | if(!strcmp(dir.d_name, ".") || !strcmp(dir.d_name, "..")) | |
| 69 | continue; | |
| 70 | fprintf(stderr, "rmdir: %s not empty\n", name); | |
| 71 | ++Errors; | |
| 72 | close(fd); | |
| 73 | return; | |
| 74 | } | |
| 75 | close(fd); | |
| 76 | if(!strcmp(np, ".") || !strcmp(np, "..")) { | |
| 77 | fprintf(stderr, "rmdir: cannot remove . or ..\n"); | |
| 78 | ++Errors; | |
| 79 | return; | |
| 80 | } | |
| 81 | strcat(name, "/."); | |
| 82 | if((access(name, 0)) < 0) { /* name/. non-existent */ | |
| 83 | strcat(name, "."); | |
| 84 | goto unl; | |
| 85 | } | |
| 86 | strcat(name, "."); | |
| 87 | if((access(name, 0)) < 0) /* name/.. non-existent */ | |
| 88 | goto unl2; | |
| 89 | if(access(name, 02)) { | |
| 90 | name[strlen(name)-3] = '\0'; | |
| 91 | fprintf(stderr, "rmdir: %s: no permission\n", name); | |
| 92 | ++Errors; | |
| 93 | return; | |
| 94 | } | |
| 95 | unl: | |
| 96 | unlink(name); /* unlink name/.. */ | |
| 97 | unl2: | |
| 98 | name[strlen(name)-1] = '\0'; | |
| 99 | unlink(name); /* unlink name/. */ | |
| 100 | name[strlen(name)-2] = '\0'; | |
| 101 | if (unlink(name) < 0) { | |
| 102 | fprintf(stderr, "rmdir: %s not removed\n", name); | |
| 103 | ++Errors; | |
| 104 | } | |
| 105 | } |