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getcwd(3)
NAME
getcwd - Get the pathname of the current directory
SYNOPSIS
Standard C Library:
#include <unistd.h>
char *getcwd(
char *buffer,
size_t size );
System V Library:
char *getcwd(
char *buffer,
int size );
LIBRARY
Standard C Library (libc) System V Library (libsysv)
STANDARDS
Interfaces documented on this reference page conform to industry standards
as follows:
getcwd() - libc version: XSH5.0
Refer to the standards(5) reference page for more information about
industry standards and associated tags.
PARAMETERS
buffer
Points to a string space to hold the pathname.
size
Specifies the length of the string space in bytes. The value of the
size parameter must be at least the length of the pathname to be
returned plus one byte for the terminating null.
DESCRIPTION
The getcwd() function returns a pointer to a string containing the absolute
pathname of the current directory. The getwd() function is called to obtain
the pathname.
[Tru64 UNIX] If the buffer parameter is a null pointer, the getcwd()
function, using the malloc() function, obtains the number of bytes of free
space as specified by the size parameter. In this case, the pointer
returned by the getcwd() function can be used as the parameter in a
subsequent call to the free() function.
NOTES
[Tru64 UNIX] The getcwd() function is supported for multithreaded
applications.
RETURN VALUES
Upon successful completion, getcwd() returns the buffer parameter.
Otherwise, a null value is returned and errno is set to indicate the error.
ERRORS
The getcwd() function sets errno to the specified values for the following
conditions:
[EACCES]
Read or search permission was denied for a component of the pathname.
[EINVAL]
The size parameter is zero.
[Tru64 UNIX] The size parameter is less than or equal to zero (for the
libsys5 version of getcwd() only).
[ERANGE]
The size parameter is greater than zero, but is smaller than the length
of the pathname + 1.
[ENOMEM]
The requested amount of memory could not be allocated.
SEE ALSO
Functions: malloc(3), getwd(3)
Standards: standards(5)
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