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REALPATH(3)            FreeBSD Library Functions Manual            REALPATH(3)

NAME
     realpath - returns the canonicalized absolute pathname

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/param.h>
     #include <stdlib.h>

     char *
     realpath(const char *pathname, char resolved_path[PATH_MAX]);

DESCRIPTION
     The realpath() function resolves all symbolic links, extra ``/''
     characters and references to /./ and /../ in pathname, and copies the
     resulting absolute pathname into the memory referenced by resolved_path.
     The resolved_path argument must refer to a buffer capable of storing at
     least PATH_MAX characters.

     The realpath() function will resolve both absolute and relative paths and
     return the absolute pathname corresponding to pathname.  All but the last
     component of pathname must exist when realpath() is called.

RETURN VALUES
     The realpath() function returns resolved_path on success.  If an error
     occurs, realpath() returns NULL, and resolved_path contains the pathname
     which caused the problem.

ERRORS
     The function realpath() may fail and set the external variable errno for
     any of the errors specified for the library functions lstat(2),
     readlink(2) and getcwd(3).

CAVEATS
     This implementation of realpath() differs slightly from the Solaris
     implementation.  The 4.4BSD version always returns absolute pathnames,
     whereas the Solaris implementation will, under certain circumstances,
     return a relative resolved_path when given a relative pathname.

SEE ALSO
     getcwd(3)

HISTORY
     The realpath() function first appeared in 4.4BSD.

FreeBSD 11.0-PRERELEASE        February 16, 1994       FreeBSD 11.0-PRERELEASE

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | CAVEATS | SEE ALSO | HISTORY

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