git: ae6a13deb8e3 - main - libc: add freadlink(3)

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=ae6a13deb8e33a52188643e09171207e1d7171e8

commit ae6a13deb8e33a52188643e09171207e1d7171e8
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2026-04-12 08:56:26 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2026-05-03 19:58:36 +0000

    libc: add freadlink(3)
    
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
    Differential revision:  https://reviews.freebsd.org/D56365
---
 include/unistd.h          |  1 +
 lib/libc/gen/Makefile.inc |  1 +
 lib/libc/gen/Symbol.map   |  1 +
 lib/libc/gen/freadlink.c  | 16 ++++++++++++++++
 4 files changed, 19 insertions(+)

diff --git a/include/unistd.h b/include/unistd.h
index 797eac4c364d..290bcce6a0b3 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -518,6 +518,7 @@ int	 execvpe(const char *, char * const *, char * const *);
 int	 feature_present(const char *);
 int	 fchroot(int);
 char	*fflagstostr(u_long);
+ssize_t	 freadlink(int fd, char *buf, size_t bufsize);
 int	 getdomainname(char *, int);
 int	 getentropy(void *, size_t);
 int	 getgrouplist(const char *, gid_t, gid_t *, int *);
diff --git a/lib/libc/gen/Makefile.inc b/lib/libc/gen/Makefile.inc
index c31f789fd1d1..18a68902f50a 100644
--- a/lib/libc/gen/Makefile.inc
+++ b/lib/libc/gen/Makefile.inc
@@ -56,6 +56,7 @@ SRCS+= \
 	fmtmsg.c \
 	fnmatch.c \
 	fpclassify.c \
+	freadlink.c \
 	frexp.c \
 	fstab.c \
 	ftok.c \
diff --git a/lib/libc/gen/Symbol.map b/lib/libc/gen/Symbol.map
index 60f34b3a1923..4d22251f7ec5 100644
--- a/lib/libc/gen/Symbol.map
+++ b/lib/libc/gen/Symbol.map
@@ -475,6 +475,7 @@ FBSD_1.8 {
 };
 
 FBSD_1.9 {
+	freadlink;
 	posix_spawn_file_actions_addchdir;
 	posix_spawn_file_actions_addfchdir;
 	posix_spawnattr_getexecfd_np;
diff --git a/lib/libc/gen/freadlink.c b/lib/libc/gen/freadlink.c
new file mode 100644
index 000000000000..e1ed7aba6c06
--- /dev/null
+++ b/lib/libc/gen/freadlink.c
@@ -0,0 +1,16 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright 2026 The FreeBSD Foundation
+ *
+ * This software were developed by Konstantin Belousov <kib@FreeBSD.org>
+ * under sponsorship from the FreeBSD Foundation.
+ */
+
+#include <unistd.h>
+
+ssize_t
+freadlink(int fd, char *buf, size_t bufsize)
+{
+	return (readlinkat(fd, "", buf, bufsize));
+}