RTEMS Filesystem Design Guide
access.c
This routine is layered on the stat() function. It acquires the current status information for the specified file and then determines if the caller has the ability to access the file for read, write or execute according to the mode argument to this function.
This routine is layered on top of the stat() function. As long as the st_mode element in the returned structure follow the standard UNIX conventions, this function should support other filesystems without alteration.
RTEMS Filesystem Design Guide
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