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/* directory manipulation routines. */
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/* directory manipulation routines. */
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/* remove a tree */
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/* remove a tree */
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int remove_tree(char *dirname)
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int remove_tree(char *dirname)
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{
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{
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    DIR *sdir;
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  DIR *sdir;
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    struct dirent *f;
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  struct dirent *f;
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    struct stat dst;
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  struct stat dst;
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    sdir=opendir(dirname);
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  sdir=opendir(dirname);
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    if(sdir==NULL) {   /* Cannot open session directory. */
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  if(sdir==NULL) {   /* Cannot open session directory. */
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      return -1;
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    return -1;
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    }
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  }
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    while((f=readdir(sdir))!=NULL) {
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  while((f=readdir(sdir))!=NULL) {
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      char fname[MAX_LINELEN+1];
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    char fname[MAX_LINELEN+1];
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      if(strcmp(".",f->d_name)==0 || strcmp("..",f->d_name)==0) continue;
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    if(strcmp(".",f->d_name)==0 || strcmp("..",f->d_name)==0) continue;
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      snprintf(fname,sizeof(fname),"%s/%s",dirname,f->d_name);
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    snprintf(fname,sizeof(fname),"%s/%s",dirname,f->d_name);
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      if(lstat(fname,&dst)) continue;
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    if(lstat(fname,&dst)) continue;
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      if(S_ISDIR(dst.st_mode)) remove_tree(fname);
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    if(S_ISDIR(dst.st_mode)) remove_tree(fname);
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      else remove(fname);
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    else remove(fname);
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    }
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  }
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    closedir(sdir);
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  closedir(sdir);
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    if(rmdir(dirname)<0) { /* Cannot remove directory. */
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  if(rmdir(dirname)<0) { /* Cannot remove directory. */
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      return -1;
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    return -1;
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    }
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  }
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    return 0;
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  return 0;
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}
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}
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/* recursively generate a directory structure */
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/* recursively generate a directory structure */
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void mkdirs(char *s)
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void mkdirs(char *s)
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{
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{
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    struct stat st;
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  struct stat st;
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    if(stat(s,&st)==-1) {
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  if(stat(s,&st)==-1) {
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      if(strrchr(s,'/')!=NULL) {
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    if(strrchr(s,'/')!=NULL) {
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          char buf[MAX_FNAME+1];
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      char buf[MAX_FNAME+1];
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          mystrncpy(buf,s,sizeof(buf));
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      mystrncpy(buf,s,sizeof(buf));
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          *strrchr(buf,'/')=0; mkdirs(buf);
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      *strrchr(buf,'/')=0; mkdirs(buf);
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      }
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      mkdir(s,S_IRWXU|S_IRWXG|S_IRWXO);
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    }
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    }
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    mkdir(s,S_IRWXU|S_IRWXG|S_IRWXO);
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  }
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}
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}
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