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Full Discussion: Permissions
Operating Systems HP-UX Permissions Post 302088416 by chrizz on Tuesday 12th of September 2006 08:20:55 AM
Old 09-12-2006
Permissions

Hey,

We've got quite a strange problem on our hands here. We are running an HP 9000/800 B.11.00.
I've just created a new group in /etc/group which i called, let's say newgroup . Then I added 4 users to the group, namely user1, user2, user3, user4 . The command grpchk shows no strange things (the maximum one of those users is used in other groups is 14 times, the group newgroup is the 40th group I've created in /etc/group)
Then I created a new directory on the server called updir . In that directory I've created an other directory called lowdir . Then I gave the following commands:
chown -R user1:newgroup /updir
chmod -R 770 /updir
Now when checking the permissions for the 2 dirs they give the exact same result (drwxrwxrwx & user1:newgroup). All seems fine...
But the problem is that only user1 can enter /updir and the /updir/downdir.
User2, user3 and user4 can only enter /updir, NOT the /updir/downdir... very strang. Smilie
 

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MPI_Group_incl(3OpenMPI)												  MPI_Group_incl(3OpenMPI)

NAME
MPI_Group_incl - Produces a group by reordering an existing group and taking only listed members. SYNTAX
C Syntax #include <mpi.h> int MPI_Group_incl(MPI_Group group, int n, int *ranks, MPI_Group *newgroup) Fortran Syntax INCLUDE 'mpif.h' MPI_GROUP_INCL(GROUP, N, RANKS, NEWGROUP, IERROR) INTEGER GROUP, N, RANKS(*), NEWGROUP, IERROR C++ Syntax #include <mpi.h> Group Group::Incl(int n, const int ranks[]) const INPUT PARAMETERS
group Group (handle). n Number of elements in array ranks (and size of newgroup)(integer). ranks Ranks of processes in group to appear in newgroup (array of integers). OUTPUT PARAMETERS
newgroup New group derived from above, in the order defined by ranks (handle). IERROR Fortran only: Error status (integer). DESCRIPTION
The function MPI_Group_incl creates a group group_out that consists of the n processes in group with ranks rank[0], ..., rank[n-1]; the process with rank i in group_out is the process with rank ranks[i] in group. Each of the n elements of ranks must be a valid rank in group and all elements must be distinct, or else the program is erroneous. If n = 0, then group_out is MPI_GROUP_EMPTY. This function can, for instance, be used to reorder the elements of a group. NOTE
This implementation does not currently check to ensure that there are no duplicates in the list of ranks. ERRORS
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ func- tions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI:Exception object. Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error. SEE ALSO
MPI_Group_compare MPI_Group_range_incl MPI_Group_free Open MPI 1.2 September 2006 MPI_Group_incl(3OpenMPI)
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