Bug in the realpath(3) function

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1 total messages Started by Timothy J. Wood Sun, 27 Dec 1992 10:17

Author: Timothy J. Wood
Date: Sun, 27 Dec 1992 10:17

39 lines
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  I believe that the following code exhibits a bug in the NeXT
  implementation of the realpath(3) function.  I am running NS3.0.

#import <sys/param.h>
#import <stdio.h>

/*
 * usage: realpath [filelist]
 */

int main (int argc, char *argv[])
{
        char *file_name;
        char resolved_name[MAXPATHLEN];
        int i = 1;

        while (i < argc) {
                if (!realpath(argv[i], resolved_name))
                        perror(argv[i]);
                else
                        puts(resolved_name);
                i++;
        }
}


   The problem involves the clipping of the prefix of some paths, for
   example:

% cd /
% realpath tmp
rivate/tmp
% realpath /tmp
/private/tmp
%

  Notice that in the first case the leading "/p" was stripped from the
  output.  This happens in various other cases as well.

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