__getcwd
OS/161 Reference Manual
Name
__getcwd - get name of current working directory (backend)
Library
Standard C Library (libc, -lc)
Synopsis
#include <unistd.h>
int
__getcwd(char *buf, size_t buflen);
Description
The name of the current directory is computed and stored in
buf, an area of size buflen. The length of data
actually stored, which must be non-negative, is returned.
Note: this call behaves like read - the name
stored in buf is not 0-terminated.
This function is not meant to be called except by the C library;
application programmers should use getcwd
instead.
Return Values
On success, __getcwd returns the length of the data returned.
On error, -1 is returned, and errno
is set according to the error encountered.
Errors
The following error codes should be returned under the conditions
given. Other error codes may be returned for other errors not
mentioned here.
| | |
| ENOENT | A component of the pathname no longer exists. |
| EIO | A hard I/O error occurred. |
| EFAULT | buf points to an invalid address. |