T_REMOVEDIR and AT_EACCESS have the same value.

Add comments to fcntl.h explaining why AT_REMOVEDIR
and AT_EACCESS can have the same value.
This commit is contained in:
Patsy Franklin 2013-03-06 12:54:10 -05:00
parent 664a9ce4ca
commit 39120df9b9
2 changed files with 10 additions and 0 deletions

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@ -1,3 +1,7 @@
2013-03-06 Patsy Franklin <pfrankli@redhat.com>
* io/fcntl.h: Added a comment about AT_EACCESS and AT_REMOVEDIR.
2013-03-06 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/bits/mman-linux.h (MAP_ANONYMOUS): Allow

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@ -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