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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | STANDARDS | SEE ALSO | COLOPHON |
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canonica...ile_name(3) Library Functions Manual canonica...ile_name(3)
canonicalize_file_name - return the canonicalized absolute
pathname
Standard C library (libc, -lc)
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>
char *canonicalize_file_name(const char *path);
The canonicalize_file_name() function returns a null-terminated
string containing the canonicalized absolute pathname
corresponding to path. In the returned string, symbolic links
are resolved, as are . and .. pathname components. Consecutive
slash (/) characters are replaced by a single slash.
The returned string is dynamically allocated by
canonicalize_file_name() and the caller should deallocate it with
free(3) when it is no longer required.
The call canonicalize_file_name(path) is equivalent to the call:
realpath(path, NULL);
On success, canonicalize_file_name() returns a null-terminated
string. On error (e.g., a pathname component is unreadable or
does not exist), canonicalize_file_name() returns NULL and sets
errno to indicate the error.
See realpath(3).
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────┼───────────────┼─────────┤
│ canonicalize_file_name() │ Thread safety │ MT-Safe │
└─────────────────────────────────────┴───────────────┴─────────┘
GNU.
readlink(2), realpath(3)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
This page was obtained from the tarball man-pages-6.9.1.tar.gz
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⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2024-06-26. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-
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improvements to the information in this COLOPHON (which is not
part of the original manual page), send a mail to
man-pages@man7.org
Linux man-pages 6.9.1 2024-05-02 canonica...ile_name(3)
Pages that refer to this page: realpath(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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