>The Austin Group should amend POSIX and the SUS in one or more of the >following ways: > >1. Standardise the dirfd function from BSD and recommend its use in > determining the buffer size for readdir_r. >2. Specify a new variant of readdir in which the buffer size is explicit > and the function returns an error code if the buffer is too small. >3. Specify that NAME_MAX must be defined as the length of the longest > name that can be used on any filesystem. (This seems to be what many > or most implementations attempt to do at present, although POSIX > currently specifies otherwise.) Why not: 4. Require the readdir() implementation to use state local to dirp. I've never understood the rationale behind readdir_r; it's like someone went through the manual looking for "pointers to static locations" and defined new functions with _r for each of them, suspending thinking. But perhaps people can look at how their readdir() implementations behave. The Solaris implementation appears to be "unshared dirp safe". Casper
