static fssh_status_t
remove_entry(int dir, const char *entry, bool recursive, bool force)
{
// stat the file
struct fssh_stat st;
fssh_status_t error = _kern_read_stat(dir, entry, false, &st, sizeof(st));
if (error != FSSH_B_OK) {
if (force && error == FSSH_B_ENTRY_NOT_FOUND)
return FSSH_B_OK;
fprintf(stderr, "Error: Failed to remove \"%s\": %s\n", entry,
fssh_strerror(error));
return error;
}
if (FSSH_S_ISDIR(st.fssh_st_mode)) {
if (!recursive) {
fprintf(stderr, "Error: \"%s\" is a directory.\n", entry);
// TODO: get the full path
return FSSH_EISDIR;
}
// remove the contents
error = remove_dir_contents(dir, entry, force);
if (error != FSSH_B_OK)
return error;
// remove the directory
error = _kern_remove_dir(dir, entry);
if (error != FSSH_B_OK) {
fprintf(stderr, "Error: Failed to remove directory \"%s\": %s\n",
entry, fssh_strerror(error));
return error;
}
} else {
// remove the entry
error = _kern_unlink(dir, entry);
if (error != FSSH_B_OK) {
fprintf(stderr, "Error: Failed to remove entry \"%s\": %s\n", entry,
fssh_strerror(error));
return error;
}
}
return FSSH_B_OK;
}
static int
fuse_unlink(const char* path)
{
PRINTD("##unlink\n");
return _ERR(_kern_unlink(-1, path));
}
static fssh_status_t
command_ln(int argc, const char* const* argv)
{
bool force = false;
bool symbolic = false;
bool dereference = true;
// parse parameters
int argi = 1;
for (argi = 1; argi < argc; argi++) {
const char *arg = argv[argi];
if (arg[0] != '-')
break;
if (arg[1] == '\0') {
fprintf(stderr, "Error: Invalid option \"-\"\n");
return FSSH_B_BAD_VALUE;
}
for (int i = 1; arg[i]; i++) {
switch (arg[i]) {
case 'f':
force = true;
break;
case 's':
symbolic = true;
break;
case 'n':
dereference = false;
break;
default:
fprintf(stderr, "Error: Unknown option \"-%c\"\n", arg[i]);
return FSSH_B_BAD_VALUE;
}
}
}
if (argc - argi != 2) {
fprintf(stderr, "Usage: %s [Options] <source> <target>\n", argv[0]);
return FSSH_B_BAD_VALUE;
}
const char *source = argv[argi];
const char *target = argv[argi + 1];
// check, if the the target is an existing directory
struct fssh_stat st;
char targetBuffer[FSSH_B_PATH_NAME_LENGTH];
fssh_status_t error = _kern_read_stat(-1, target, dereference, &st,
sizeof(st));
if (error == FSSH_B_OK) {
if (FSSH_S_ISDIR(st.fssh_st_mode)) {
// get source leaf
char leaf[FSSH_B_FILE_NAME_LENGTH];
error = get_last_path_component(source, leaf, sizeof(leaf));
if (error != FSSH_B_OK) {
fprintf(stderr, "Error: Failed to get leaf name of source "
"path: %s\n", fssh_strerror(error));
return error;
}
// compose a new path
int len = strlen(target) + 1 + strlen(leaf);
if (len > (int)sizeof(targetBuffer)) {
fprintf(stderr, "Error: Resulting target path is too long.\n");
return FSSH_B_BAD_VALUE;
}
strcpy(targetBuffer, target);
strcat(targetBuffer, "/");
strcat(targetBuffer, leaf);
target = targetBuffer;
}
}
// check, if the target exists
error = _kern_read_stat(-1, target, false, &st, sizeof(st));
if (error == FSSH_B_OK) {
if (!force) {
fprintf(stderr, "Error: Can't create link. \"%s\" is in the way.\n",
target);
return FSSH_B_FILE_EXISTS;
}
// unlink the entry
error = _kern_unlink(-1, target);
if (error != FSSH_B_OK) {
fprintf(stderr, "Error: Failed to remove \"%s\" to make way for "
"link: %s\n", target, fssh_strerror(error));
return error;
}
}
// finally create the link
if (symbolic) {
error = _kern_create_symlink(-1, target, source,
FSSH_S_IRWXU | FSSH_S_IRWXG | FSSH_S_IRWXO);
} else
error = _kern_create_link(target, source);
if (error != FSSH_B_OK) {
fprintf(stderr, "Error: Failed to create link: %s\n",
fssh_strerror(error));
}
return error;
}
