NAME

       pmem2_source_get_fd() - reads file descriptor of the data source

SYNOPSIS

              #include <libpmem2.h>

              int pmem2_source_get_fd(const struct pmem2_source *src, int *fd);

DESCRIPTION

       The  pmem2_source_get_fd()  function  reads  the file descriptor of *struct pmem2_source**
       object describing the data source and returns it by fd parameter.

       This function is Linux only, on Windows use pmem2_source_get_handle(3).

RETURN VALUE

       The pmem2_source_get_fd() function returns 0 on  success  or  a  negative  error  code  on
       failure.

ERRORS

       The pmem2_source_get_fd() can fail with the following errors:

       • PMEM2_E_FILE_DESCRIPTOR_NOT_SET  -  in  case  of an instance of struct pmem2_source that
         does not come from source type  that  support  file  descriptors,  eg.   anonymous  data
         source.

SEE ALSO

       pmem2_source_get_handle(3), libpmem2(7) and <https://pmem.io>