// truncate a file
// return 0 on success
// return -errno on error
static int UG_impl_truncate( struct SG_gateway* gateway, struct SG_request_data* reqdat, uint64_t new_size, void* cls ) {
int rc = 0;
struct UG_state* ug = (struct UG_state*)SG_gateway_cls( gateway );
struct fskit_core* fs = UG_state_fs( ug );
struct ms_client* ms = (struct ms_client*)SG_gateway_ms( gateway );
uint64_t volume_id = ms_client_get_volume_id( ms );
// truncate locally. The MS will be informed as part of the user route.
rc = fskit_trunc( fs, reqdat->fs_path, reqdat->user_id, volume_id, new_size );
if( rc != 0 ) {
SG_error("fskit_trunc( '%s', %" PRIu64 ") rc = %d\n", reqdat->fs_path, new_size, rc);
}
return rc;
}
int fskit_fuse_truncate(const char *path, off_t newsize) {
struct fskit_fuse_state* state = fskit_fuse_get_state();
if( (state->callbacks & FSKIT_FUSE_TRUNCATE) == 0 ) {
return -ENOSYS;
}
fskit_debug("truncate(%s, %jd)\n", path, newsize );
uid_t uid = fskit_fuse_get_uid( state );
gid_t gid = fskit_fuse_get_gid( state );
int rc = fskit_trunc( state->core, path, uid, gid, newsize );
fskit_debug("truncate(%s, %jd) rc = %d\n", path, newsize, rc );
return rc;
}
