ACCESS(2)                                               ACCESS(2)



     NAME
          access - determine accessibility of a file

     SYNOPSIS
          int access (path, amode)
          char *path;
          int amode;

     DESCRIPTION
          Path points to a path name naming a file.  access checks the
          named file for accessibility according to the bit pattern
          contained in amode, using the real user ID in place of the
          effective user ID and the real group ID in place of the
          effective group ID.  The bit pattern contained in amode is
          constructed as follows:

               04   read
               02   write
               01   execute (search)
               00   check existence of file

          Access to the file is denied if one or more of the following
          are true:
       [ENOTDIR]     A component of the path prefix is not a directory.
       [ENOENT]      Read, write, or execute (search) permission is
                     requested for a null path name.
       [ENOENT]      The named file does not exist.
       [EACCES]      Search permission is denied on a component of the
                     path prefix.
       [EROFS]       Write access is requested for a file on a read-only
                     file system.
       [ETXTBSY]     Write access is requested for a pure procedure
                     (shared text) file that is being executed.
       [EACCES]      Permission bits of the file mode do not permit
                     the requested access.
       [EFAULT]      Path points outside the allocated address
                     space for the process.
       [EINTR]       A signal was caught during the access
                     system call.
       [ENOLINK]     Path points to a remote machine and the link
                     to that machine is no longer active.
       [EMULTIHOP]   Components of path require hopping to multiple
                     remote machines.

          The owner of a file has permission checked with respect to
          the ``owner'' read, write, and execute mode bits.  Members
          of the file's group other than the owner have permissions
          checked with respect to the ``group'' mode bits, and all
          others have permissions checked with respect to the
          ``other'' mode bits.

     SEE ALSO



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     ACCESS(2)                                               ACCESS(2)



          chmod(2), stat(2).

     DIAGNOSTICS
          If the requested access is permitted, a value of 0 is
          returned.  Otherwise, a value of -1 is returned and errno is
          set to indicate the error.

     ORIGIN
          AT&T V.3














































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