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-rw-r--r--io/fcntl.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/io/fcntl.h b/io/fcntl.h
index 61834ce..14ccae0 100644
--- a/io/fcntl.h
+++ b/io/fcntl.h
@@ -129,6 +129,12 @@ typedef __pid_t pid_t;
# define SEEK_END 2 /* Seek from end of file. */
#endif /* XPG */
+/* The constants AT_REMOVEDIR and AT_EACCESS have the same value. AT_EASSESS
+ is meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to
+ unlinkat. The two functions do completely different things and therefore,
+ the flags can be allowed to overlap. For example, passing AT_REMOVEDIR to
+ faccessat would be undefined behavior and thus treating it equivalent to
+ AT_EACCESS is valid undefined behavior. */
#ifdef __USE_ATFILE
# define AT_FDCWD -100 /* Special value used to indicate
the *at functions should use the