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/*
* Remove directory
*/
#include <sys/types.h>
#include <sys/dir.h>
#include <sys/stat.h>
#include <stdio.h>
int Errors = 0;
char *rindex();
char *strcat();
char *strcpy();
main(argc,argv)
int argc;
char **argv;
{
if(argc < 2) {
fprintf(stderr, "rmdir: arg count\n");
exit(1);
}
while(--argc)
rmdir(*++argv);
exit(Errors!=0);
}
rmdir(d)
char *d;
{
int fd;
char *np, name[500];
struct stat st, cst;
struct direct dir;
strcpy(name, d);
if((np = rindex(name, '/')) == NULL)
np = name;
if(stat(name,&st) < 0) {
fprintf(stderr, "rmdir: %s non-existent\n", name);
++Errors;
return;
}
if (stat("", &cst) < 0) {
fprintf(stderr, "rmdir: cannot stat \"\"");
++Errors;
exit(1);
}
if((st.st_mode & S_IFMT) != S_IFDIR) {
fprintf(stderr, "rmdir: %s not a directory\n", name);
++Errors;
return;
}
if(st.st_ino==cst.st_ino &&st.st_dev==cst.st_dev) {
fprintf(stderr, "rmdir: cannot remove current directory\n");
++Errors;
return;
}
if((fd = open(name,0)) < 0) {
fprintf(stderr, "rmdir: %s unreadable\n", name);
++Errors;
return;
}
while(read(fd, (char *)&dir, sizeof dir) == sizeof dir) {
if(dir.d_ino == 0) continue;
if(!strcmp(dir.d_name, ".") || !strcmp(dir.d_name, ".."))
continue;
fprintf(stderr, "rmdir: %s not empty\n", name);
++Errors;
close(fd);
return;
}
close(fd);
if(!strcmp(np, ".") || !strcmp(np, "..")) {
fprintf(stderr, "rmdir: cannot remove . or ..\n");
++Errors;
return;
}
strcat(name, "/.");
if((access(name, 0)) < 0) { /* name/. non-existent */
strcat(name, ".");
goto unl;
}
strcat(name, ".");
if((access(name, 0)) < 0) /* name/.. non-existent */
goto unl2;
if(access(name, 02)) {
name[strlen(name)-3] = '\0';
fprintf(stderr, "rmdir: %s: no permission\n", name);
++Errors;
return;
}
unl:
unlink(name); /* unlink name/.. */
unl2:
name[strlen(name)-1] = '\0';
unlink(name); /* unlink name/. */
name[strlen(name)-2] = '\0';
if (unlink(name) < 0) {
fprintf(stderr, "rmdir: %s not removed\n", name);
++Errors;
}
}
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