getdirentries - get directory entries in a filesystem-independent format

#include <dirent.h>
ssize_t getdirentries(int fd, char buf[restrict .nbytes], size_t nbytes,
 off_t *restrict basep);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

    Since glibc 2.19:
        _DEFAULT_SOURCE
    glibc 2.19 and earlier:
        _BSD_SOURCE || _SVID_SOURCE

Read directory entries from the directory specified by fd into buf. At most nbytes are read. Reading starts at offset *basep, and *basep is updated with the new position after reading.

getdirentries() returns the number of bytes read or zero when at the end of the directory. If an error occurs, -1 is returned, and errno is set to indicate the error.

lseek(2), open(2)