static IMFS_jnode_t *IMFS_search_in_directory(
IMFS_jnode_t *dir,
const char *token,
size_t tokenlen
)
{
if ( rtems_filesystem_is_current_directory( token, tokenlen ) ) {
return dir;
} else {
if ( rtems_filesystem_is_parent_directory( token, tokenlen ) ) {
return dir->Parent;
} else {
rtems_chain_control *entries = &dir->info.directory.Entries;
rtems_chain_node *current = rtems_chain_first( entries );
rtems_chain_node *tail = rtems_chain_tail( entries );
while ( current != tail ) {
IMFS_jnode_t *entry = (IMFS_jnode_t *) current;
bool match = strncmp( entry->name, token, tokenlen ) == 0
&& entry->name [tokenlen] == '\0';
if ( match ) {
return entry;
}
current = rtems_chain_next( current );
}
return NULL;
}
}
}
static IMFS_jnode_t *IMFS_search_in_directory(
IMFS_directory_t *dir,
const char *token,
size_t tokenlen
)
{
if ( rtems_filesystem_is_current_directory( token, tokenlen ) ) {
return &dir->Node;
} else {
if ( rtems_filesystem_is_parent_directory( token, tokenlen ) ) {
return dir->Node.Parent;
} else {
rtems_chain_control *entries = &dir->Entries;
rtems_chain_node *current = rtems_chain_first( entries );
rtems_chain_node *tail = rtems_chain_tail( entries );
while ( current != tail ) {
IMFS_jnode_t *entry = (IMFS_jnode_t *) current;
bool match = entry->namelen == tokenlen
&& memcmp( entry->name, token, tokenlen ) == 0;
if ( match ) {
return entry;
}
current = rtems_chain_next( current );
}
return NULL;
}
}
}
static rtems_filesystem_eval_path_generic_status msdos_eval_token(
rtems_filesystem_eval_path_context_t *ctx,
void *arg,
const char *token,
size_t tokenlen
)
{
rtems_filesystem_eval_path_generic_status status =
RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_DONE;
if (rtems_filesystem_is_current_directory(token, tokenlen)) {
rtems_filesystem_eval_path_clear_token(ctx);
status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_CONTINUE;
} else {
rtems_filesystem_location_info_t *currentloc =
rtems_filesystem_eval_path_get_currentloc(ctx);
int rc = msdos_find_name(currentloc, token, tokenlen);
if (rc == RC_OK) {
rtems_filesystem_eval_path_clear_token(ctx);
msdos_set_handlers(currentloc);
if (rtems_filesystem_eval_path_has_path(ctx)) {
status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_CONTINUE;
}
} else if (rc == MSDOS_NAME_NOT_FOUND_ERR) {
status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_NO_ENTRY;
} else {
rtems_filesystem_eval_path_error(ctx, 0);
}
}
return status;
}
static rtems_filesystem_eval_path_generic_status rtems_jffs2_eval_token(
rtems_filesystem_eval_path_context_t *ctx,
void *arg,
const char *token,
size_t tokenlen
)
{
rtems_filesystem_eval_path_generic_status status =
RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_DONE;
rtems_filesystem_location_info_t *currentloc =
rtems_filesystem_eval_path_get_currentloc(ctx);
struct _inode *dir_i = rtems_jffs2_get_inode_by_location(currentloc);
bool access_ok = rtems_filesystem_eval_path_check_access(
ctx,
RTEMS_FS_PERMS_EXEC,
dir_i->i_mode,
dir_i->i_uid,
dir_i->i_gid
);
if (access_ok) {
struct _inode *entry_i;
if (rtems_filesystem_is_current_directory(token, tokenlen)) {
entry_i = dir_i;
++entry_i->i_count;
} else if (rtems_filesystem_is_parent_directory(token, tokenlen)) {
entry_i = dir_i->i_parent;
++entry_i->i_count;
} else {
entry_i = jffs2_lookup(dir_i, token, (int) tokenlen);
}
if (IS_ERR(entry_i)) {
rtems_filesystem_eval_path_error(ctx, PTR_ERR(entry_i));
} else if (entry_i != NULL) {
bool terminal = !rtems_filesystem_eval_path_has_path(ctx);
int eval_flags = rtems_filesystem_eval_path_get_flags(ctx);
bool follow_sym_link = (eval_flags & RTEMS_FS_FOLLOW_SYM_LINK) != 0;
rtems_filesystem_eval_path_clear_token(ctx);
if (S_ISLNK(entry_i->i_mode) && (follow_sym_link || !terminal)) {
struct jffs2_inode_info *f = JFFS2_INODE_INFO(entry_i);
const char *target = f->target;
rtems_filesystem_eval_path_recursive(ctx, target, strlen(target));
jffs2_iput(entry_i);
} else {
if (S_ISDIR(entry_i->i_mode) && entry_i->i_parent == NULL) {
entry_i->i_parent = dir_i;
++dir_i->i_count;
}
jffs2_iput(dir_i);
rtems_jffs2_set_location(currentloc, entry_i);
if (rtems_filesystem_eval_path_has_path(ctx)) {
status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_CONTINUE;
}
}
} else {
status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_NO_ENTRY;
}
}
return status;
}
static rtems_filesystem_eval_path_generic_status
rtems_rfs_rtems_eval_token(
rtems_filesystem_eval_path_context_t *ctx,
void *arg,
const char *token,
size_t tokenlen
)
{
rtems_filesystem_eval_path_generic_status status =
RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_DONE;
rtems_rfs_inode_handle* inode = arg;
bool access_ok = rtems_rfs_rtems_eval_perms (ctx, RTEMS_FS_PERMS_EXEC, inode);
if (access_ok) {
if (rtems_filesystem_is_current_directory (token, tokenlen)) {
rtems_filesystem_eval_path_clear_token (ctx);
} else {
rtems_filesystem_location_info_t *currentloc =
rtems_filesystem_eval_path_get_currentloc( ctx );
rtems_rfs_file_system* fs = rtems_rfs_rtems_pathloc_dev (currentloc);
rtems_rfs_ino entry_ino;
uint32_t entry_doff;
int rc = rtems_rfs_dir_lookup_ino (
fs,
inode,
token,
tokenlen,
&entry_ino,
&entry_doff
);
if (rc == 0) {
rc = rtems_rfs_inode_close (fs, inode);
if (rc == 0) {
rc = rtems_rfs_inode_open (fs, entry_ino, inode, true);
}
if (rc != 0) {
/*
* This prevents the rtems_rfs_inode_close() from doing something in
* rtems_rfs_rtems_eval_path().
*/
memset (inode, 0, sizeof(*inode));
}
} else {
status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_NO_ENTRY;
rc = -1;
}
if (rc == 0) {
bool is_sym_link = rtems_rfs_rtems_node_type_by_inode (inode)
== RTEMS_FILESYSTEM_SYM_LINK;
int eval_flags = rtems_filesystem_eval_path_get_flags (ctx);
bool follow_sym_link = (eval_flags & RTEMS_FS_FOLLOW_SYM_LINK) != 0;
bool terminal = !rtems_filesystem_eval_path_has_path (ctx);
rtems_filesystem_eval_path_clear_token (ctx);
if (is_sym_link && (follow_sym_link || !terminal)) {
rtems_rfs_rtems_follow_link (ctx, fs, entry_ino);
} else {
rc = rtems_rfs_rtems_set_handlers (currentloc, inode) ? 0 : EIO;
if (rc == 0) {
rtems_rfs_rtems_set_pathloc_ino (currentloc, entry_ino);
rtems_rfs_rtems_set_pathloc_doff (currentloc, entry_doff);
if (!terminal) {
status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_CONTINUE;
}
} else {
rtems_filesystem_eval_path_error (
ctx,
rtems_rfs_rtems_error ("eval_path: set handlers", rc)
);
}
}
}
}
}
return status;
}
