Replace C-string with std::string, pointers with references, and
variable-size arrays in struct with std::vector.
Change-Id: I57f361a0e58286cbcd113e9be225981da56721b2
There is an integer overflow when the size of system goes beyond the
signed int limits. Hence changing pos to size_t.
Change-Id: I6e5e1b2f0e72030b30a6df09a01642f4c82abc79
Currently the fsync() inside write_all() may be called multiple times
when performing a command. Move that to the outer loop and call it
only after completing the command.
Also remove the O_SYNC flag when writing a stash.
Change-Id: I71e51d76051a2f7f504eef1aa585d2cb7a000d80