dirent.h (GNU Gnulib)

Gnulib module: dirent-h

Portability problems fixed by Gnulib:

This header file is missing on some platforms: MSVC 14.
Although many systems define directory entry type macros like DT_DIR, some do not: Minix 3.1.8, AIX 7.2, HP-UX 11, Solaris 11.4, mingw.
The directory entry type macro DT_WHT is missing on many systems: All systems where DT_DIR is missing, plus OpenBSD 7.5.
The conversion macros DTTOIF and IFTODT are missing on many systems (however, the Gnulib replacement macros may evaluate their arguments multiple times): All systems where DT_DIR is missing, plus OpenBSD 7.5.
The type ino_t is missing on some platforms: glibc 2.23 and others.

Portability problems not fixed by Gnulib:

Although many systems define a struct dirent member named d_type, some do not: Minix 3.1.8, AIX 7.2, HP-UX 11, Solaris 11.4, mingw.
On systems with d_type, not every filesystem supports d_type, and those lacking support will set it to DT_UNKNOWN.
The POSIX.1-2024 directory entry type macros DT_MQ, DT_SEM, DT_SHM and DT_TMO are missing on many platforms.
Some systems define a struct dirent member named d_namlen containing the string length of d_name, but others do not: glibc 2.23 on Linux, Minix 3.1.8, Solaris 11.4, Cygwin. All of these, except Cygwin, have a member d_reclen instead, that has a different semantics.
Some systems define a struct dirent member named d_off containing a magic cookie suitable as an argument to seekdir, but others do not: glibc 2.23 on Hurd, macOS 11.1, FreeBSD 11.0, NetBSD 10.0, OpenBSD 7.5, AIX 5.1, HP-UX 11, Cygwin, mingw.
Some systems define a struct dirent member named d_reclen containing the number of bytes in the directory entry record, but others do not. This member has limited utility, as it is an implementation detail.