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Pointer to variable that will receive the return error code from this function:
FS_ERR_NONE
Working directory obtained.
FS_ERR_NULL_PTR
Argument path_dir passed a NULL pointer.
FS_ERR_NULL_ARG
Argument size passed a NULL value.
FS_ERR_NAME_BUF_TOO_SHORT
Argument size less than length of path
FS_ERR_VOL_NONE_EXIST
No volumes exist.
Returned Value
None.
Notes/Warnings
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