[Bug 1517] New: mount does not use the provided filesystem handler table functions

[bugzilla-daemon at rtems.org]

https://www.rtems.org/bugzilla/show_bug.cgi?id=1517

           Summary: mount does not use the provided filesystem handler
                    table functions
           Product: RTEMS
           Version: 4.10
          Platform: All
        OS/Version: RTEMS
            Status: NEW
          Severity: normal
          Priority: P3
         Component: filesystem
        AssignedTo: joel.sherrill at oarcorp.com
        ReportedBy: bharath.s.jois at gmail.com


Created an attachment (id=749)
 --> (http://www.rtems.org/bugzilla/attachment.cgi?id=749)
File from rtems/testsuites/psxtests/psxfile01/test.c

The code:
mount(&mt_entry, &IMFS_ops_modified,
RTEMS_FILESYSTEM_READ_WRITE, NULL, "/imfs");

is supposed to mount a filesystem 
- at /imfs
- filesystem handler table functions from &IMFS_ops_modified
- with options = RTEMS_FILESYSTEM_READ_WRITE
- device type = NULL and 
- and should fill the mt_entry with appropriate mount table entry value

and all operations involving the filesystem handler functions under this newly
mounted filesystem need to use the provided handler functions (during mount)

Error:
The mount call does seem to consider the provided handler function table.
Instead,

if IMFS_ops_modified.fsmount_me_h is IMFS_initialize, the handlers associated
with mt_entry would be set to IMFS_ops (see imfs_init.c)

similar pattern was seen for the dosfs too

The above behaviour was seen during coverage improvement while exercising the
_rename_r function in the libcsupport.

Attached is the original source file. Line 150 and 426 need to be looked into
for details of operation.

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