Re: [PATCH] uapi/fcntl: conditionally define AT_RENAME* macros
From: Matthew Wilcox <willy@infradead.org>
Date: 2025-08-25 13:03:27
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On Sun, Aug 24, 2025 at 04:54:50PM -0700, Randy Dunlap wrote:
In file included from ../samples/vfs/test-statx.c:23: usr/include/linux/fcntl.h:159:9: warning: ‘AT_RENAME_NOREPLACE’ redefined 159 | #define AT_RENAME_NOREPLACE 0x0001 In file included from ../samples/vfs/test-statx.c:13: /usr/include/stdio.h:171:10: note: this is the location of the previous definition 171 | # define AT_RENAME_NOREPLACE RENAME_NOREPLACE
Oh dear. This is going to be libc-version-dependent. $ grep -r AT_RENAME_NOREPLACE /usr/include /usr/include/linux/fcntl.h:#define AT_RENAME_NOREPLACE 0x0001 It's not in stdio.h at all. This is with libc6 2.41-10