static bool
rtems_rfs_rtems_eval_perms (rtems_filesystem_eval_path_context_t *ctx,
int eval_flags,
rtems_rfs_inode_handle* inode)
{
return rtems_filesystem_eval_path_check_access(
ctx,
eval_flags,
rtems_rfs_inode_get_mode (inode),
rtems_rfs_inode_get_uid (inode),
rtems_rfs_inode_get_gid (inode)
);
}
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 IMFS_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 );
IMFS_jnode_t *dir = currentloc->node_access;
bool access_ok = rtems_filesystem_eval_path_check_access(
ctx,
RTEMS_FS_PERMS_EXEC,
dir->st_mode,
dir->st_uid,
dir->st_gid
);
if ( access_ok ) {
IMFS_jnode_t *entry = IMFS_search_in_directory( dir, token, tokenlen );
if ( entry != NULL ) {
bool terminal = !rtems_filesystem_eval_path_has_path( ctx );
int eval_flags = rtems_filesystem_eval_path_get_flags( ctx );
bool follow_hard_link = (eval_flags & RTEMS_FS_FOLLOW_HARD_LINK) != 0;
bool follow_sym_link = (eval_flags & RTEMS_FS_FOLLOW_SYM_LINK) != 0;
IMFS_jnode_types_t type = IMFS_type( entry );
rtems_filesystem_eval_path_clear_token( ctx );
if ( type == IMFS_HARD_LINK && (follow_hard_link || !terminal)) {
entry = entry->info.hard_link.link_node;
}
if ( type == IMFS_SYM_LINK && (follow_sym_link || !terminal)) {
const char *target = entry->info.sym_link.name;
rtems_filesystem_eval_path_recursive( ctx, target, strlen( target ) );
} else {
rtems_filesystem_global_location_t **fs_root_ptr =
IMFS_is_mount_point( entry, type );
if ( fs_root_ptr == NULL ) {
--dir->reference_count;
++entry->reference_count;
currentloc->node_access = entry;
currentloc->node_access_2 =
IMFS_generic_get_context_by_node( entry );
IMFS_Set_handlers( currentloc );
if ( !terminal ) {
status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_CONTINUE;
}
} else {
access_ok = rtems_filesystem_eval_path_check_access(
ctx,
RTEMS_FS_PERMS_EXEC,
entry->st_mode,
entry->st_uid,
entry->st_gid
);
if ( access_ok ) {
rtems_filesystem_eval_path_restart( ctx, fs_root_ptr );
}
}
}
} else {
status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_NO_ENTRY;
}
}
return status;
}
