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# PR_Access
Determines the accessibility of a file.
## Syntax
```{code}
#include <prio.h>
PRStatus PR_Access(
const char *name,
PRAccessHow how);
```
### Parameters
The function has the following parameters:
`name`
: The pathname of the file whose accessibility is to be determined.
`how`
: Specifies which access permission to check for. Use one of the
following values:
> - `PR_ACCESS_READ_OK`. Test for read permission.
> - `PR_ACCESS_WRITE_OK`. Test for write permission.
> - `PR_ACCESS_EXISTS`. Check existence of file.
### Returns
One of the following values:
- If the requested access is permitted, `PR_SUCCESS`.
- If the requested access is not permitted, `PR_FAILURE`.