On Sun, 20 Sep 1998 17:58:00 +1000 
 Simon Burge <simonb@telstra.com.au> wrote:

 > Dang, just because things recompile under NetBSD doesn't mean it's
 > right :(
 > 
 > Is something like the following acceptable?  Do any of the _S_IF* need
 > protecting?  I guess my first foray into standards didn't go too well,
 > and I didn't even know it!

This looks ok, sure.  The _S_IF* don't need protecting because they're not
in the user's namespace (they're protected w/ the prepended _ :-)

 > #define _S_IFMT   0170000               /* type of file mask */
 > #define _S_IFIFO  0010000               /* named pipe (fifo) */
 > #define _S_IFCHR  0020000               /* character special */
 > #define _S_IFDIR  0040000               /* directory */
 > #define _S_IFBLK  0060000               /* block special */
 > #define _S_IFREG  0100000               /* regular */
 > #define _S_IFLNK  0120000               /* symbolic link */
 > #define _S_ISVTX  0001000               /* save swapped text even after use */
 > #define _S_IFSOCK 0140000               /* socket */
 > #define _S_IFWHT  0160000               /* whiteout */
 > 
 > #if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) 
 > #define S_IFMT   _S_IFMT 
 > #define S_IFIFO  _S_IFIFO      
 > #define S_IFCHR  _S_IFCHR  
 > #define S_IFDIR  _S_IFDIR
 > #define S_IFBLK  _S_IFBLK      
 > #define S_IFREG  _S_IFREG  
 > #define S_IFLNK  _S_IFLNK
 > #define S_ISVTX  _S_ISVTX      
 > #endif
 > #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 
 > #define S_IFSOCK _S_IFSOCK  
 > #define S_IFWHT  _S_IFWHT      
 > #endif
 > 
 > #define S_ISDIR(m)      ((m & _S_IFMT) == _S_IFDIR)     /* directory */
 > #define S_ISCHR(m)      ((m & _S_IFMT) == _S_IFCHR)     /* char special */
 > #define S_ISBLK(m)      ((m & _S_IFMT) == _S_IFBLK)     /* block special */
 > #define S_ISREG(m)      ((m & _S_IFMT) == _S_IFREG)     /* regular file */
 > #define S_ISFIFO(m)     ((m & _S_IFMT) == _S_IFIFO)     /* fifo */
 > #if !defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
 > #define S_ISLNK(m)      ((m & _S_IFMT) == _S_IFLNK)     /* symbolic link */
 > #endif
 > #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)
 > #define S_ISSOCK(m)     ((m & _S_IFMT) == _S_IFSOCK)    /* socket */
 > #define S_ISWHT(m)      ((m & _S_IFMT) == _S_IFWHT)     /* whiteout */
 > #endif
 > 

Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                            Home: +1 408 866 1912
NAS: M/S 258-5                                       Work: +1 650 604 0935
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