void verify_filesystem_availability(const char *fs_name, const char *env_name)
{
const char *fs_path;
char filepath[120];
const char *tmp_file = ".slurm/tacc_test";
if( (fs_path = getenv(env_name) ) == NULL)
{
printf("\nUnable to query %s environment variable...(job submission aborted)\n",env_name);
exit(1);
}
// Verify we can write to user's $HOME
printf("--> Verifying availability of your %s dir (%s)...",fs_name,fs_path);
if( strlen(fs_path) > (sizeof(filepath) + sizeof(tmp_file) - 3) )
{
printf("%s dir too long: FAILED\n",fs_name);
exit(1);
}
if (sprintf(filepath,"%s/%s",fs_path,tmp_file) < 0)
{
printf("error forming test file string: FAILED\n");
exit(1);
}
if( check_file_path(filepath) != 0)
{
printf("FAILED\n");
exit(1);
}
// print to file to verify write capability
FILE *fp_test = fopen(filepath,"w");
if(fp_test == NULL)
{
printf("FAILED\n");
exit(1);
}
if (fprintf(fp_test,"The answer is %i\n",42) < 0 )
{
fclose(fp_test);
printf("FAILED\n");
exit(1);
}
else
{
fclose(fp_test);
printf("OK\n");
}
return;
}
int main(int argc, char **argv) {
char * target_file_path;
char target_file_name[256];
unsigned int tpath_index, tfile_index;
struct ext2_inode parent, target;
if(argc != 3) {
fprintf(stderr, "Usage: ext2_rm <image file name> <target path>\n");
exit(1);
}
if (ext2_init(argv[1]) == -1){
exit(1);
}
// check target path
if(!check_file_path(argv[2]) ) {
printf("invaid abs path\n");
return ENOENT;
}
// get target file path and name
target_file_path = malloc(strlen(argv[2]));
get_last_entry(argv[2],target_file_name, target_file_path);
// check if it is vaild target file name
if (! strlen(target_file_name)){
printf("invaid target file name\n");
return ENOENT;
}
if (is_dir(argv[2])){
printf("invaid target file name\n");
return ENOENT;
}
// get inode index for source file and target file
tfile_index = get_inode_index(argv[2]);
tpath_index = get_inode_index(target_file_path);
free(target_file_path);
// check if source path and target path vaild
if(!tpath_index){
printf("No such file or directory\n");
return ENOENT;
}
// check if the target is the file
if(tfile_index){
if(! (get_inode(tfile_index)->i_mode & EXT2_S_IFREG)){
printf("%s not a file\n", target_file_name);
return ENOENT;
}
}
remove_inode(get_inode(tpath_index), get_inode(tfile_index), tfile_index);
return 0;
}