firejail --ls reports wrong file sizes for large files

[reinerh]

I noticed that the --ls command prints negative file sizes for large files (the file has a size of several GB).

$ firejail --ls=... /
...
-rw------- root     root      -214748364 swap.bin
...

The problem seems to be that it's using a (32bit) int, while st_size is actually of type off_t (which is on x86_64 a long int).

firejail/src/firejail/ls.c

Lines 155 to 158 in dd5ae0d

	// file size
	char *sz;
	if (asprintf(&sz, "%d", (int) s.st_size) == -1)
	errExit("asprintf");