Add O_SYMLINK emulation

for MacOSX partial compatibility, defined as O_PATH | O_NOFOLLOW.
fstat(2) and freadlink(3) works on the resulting file descriptors,
but reads on the regular file do not.

More complete but more hackish version was developed but deemed too
hackish.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D56365

This commit is contained in:

Konstantin Belousov

2026-04-20 23:02:13 +03:00

parent fbecfc4aa0

commit 2213820b6f

1 changed files with 7 additions and 0 deletions

									
										sys/sys/fcntl.h
									
		+7
		
												View File
												
				@@ -142,6 +142,13 @@ typedef	__pid_t		pid_t;

				#define	O_EMPTY_PATH	0x02000000

				#define	O_NAMEDATTR	0x04000000	/* NFSv4 named attributes */

				#define	O_XATTR		O_NAMEDATTR	/* Solaris compatibility */

				/*

				 * Emulate MacOSX compatibility flag without consuming a flags bit.

				 * It is not fully correct since reads over regular files opened with

				 * this definition fail.

				 */

				#define	O_SYMLINK	(O_PATH | O_NOFOLLOW)

				#endif

				#if __POSIX_VISIBLE >= 202405