/**
* Recursively delete the given path.
* full_path : the path to delete
* needs_tt_user: the top level directory must be deleted by the tt user.
*/
static int delete_path(const char *full_path,
int needs_tt_user) {
int exit_code = 0;
if (full_path == NULL) {
fprintf(LOGFILE, "Path is null\n");
exit_code = UNABLE_TO_BUILD_PATH; // may be malloc failed
} else {
char *(paths[]) = {strdup(full_path), 0};
if (paths[0] == NULL) {
fprintf(LOGFILE, "Malloc failed in delete_path\n");
return -1;
}
// check to make sure the directory exists
if (access(full_path, F_OK) != 0) {
if (errno == ENOENT) {
free(paths[0]);
return 0;
}
}
FTS* tree = fts_open(paths, FTS_PHYSICAL | FTS_XDEV, NULL);
FTSENT* entry = NULL;
int ret = 0;
if (tree == NULL) {
fprintf(LOGFILE,
"Cannot open file traversal structure for the path %s:%s.\n",
full_path, strerror(errno));
free(paths[0]);
return -1;
}
while (((entry = fts_read(tree)) != NULL) && exit_code == 0) {
switch (entry->fts_info) {
case FTS_DP: // A directory being visited in post-order
if (!needs_tt_user ||
strcmp(entry->fts_path, full_path) != 0) {
if (rmdir(entry->fts_accpath) != 0) {
fprintf(LOGFILE, "Couldn't delete directory %s - %s\n",
entry->fts_path, strerror(errno));
exit_code = -1;
}
}
break;
case FTS_F: // A regular file
case FTS_SL: // A symbolic link
case FTS_SLNONE: // A broken symbolic link
case FTS_DEFAULT: // Unknown type of file
if (unlink(entry->fts_accpath) != 0) {
fprintf(LOGFILE, "Couldn't delete file %s - %s\n", entry->fts_path,
strerror(errno));
exit_code = -1;
}
break;
case FTS_DNR: // Unreadable directory
fprintf(LOGFILE, "Unreadable directory %s. Skipping..\n",
entry->fts_path);
break;
case FTS_D: // A directory in pre-order
// if the directory isn't readable, chmod it
if ((entry->fts_statp->st_mode & 0200) == 0) {
fprintf(LOGFILE, "Unreadable directory %s, chmoding.\n",
entry->fts_path);
if (chmod(entry->fts_accpath, 0700) != 0) {
fprintf(LOGFILE, "Error chmoding %s - %s, continuing\n",
entry->fts_path, strerror(errno));
}
}
break;
case FTS_NS: // A file with no stat(2) information
// usually a root directory that doesn't exist
fprintf(LOGFILE, "Directory not found %s\n", entry->fts_path);
break;
case FTS_DC: // A directory that causes a cycle
case FTS_DOT: // A dot directory
case FTS_NSOK: // No stat information requested
break;
case FTS_ERR: // Error return
fprintf(LOGFILE, "Error traversing directory %s - %s\n",
entry->fts_path, strerror(entry->fts_errno));
exit_code = -1;
break;
break;
default:
exit_code = -1;
break;
}
}
ret = fts_close(tree);
if (exit_code == 0 && ret != 0) {
fprintf(LOGFILE, "Error in fts_close while deleting %s\n", full_path);
exit_code = -1;
}
if (needs_tt_user) {
// If the delete failed, try a final rmdir as root on the top level.
// That handles the case where the top level directory is in a directory
// that is owned by the node manager.
exit_code = rmdir_as_nm(full_path);
}
free(paths[0]);
}
return exit_code;
}