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-rw-r--r--posix/unistd.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/posix/unistd.h b/posix/unistd.h
index 86e0e9e659..9684126eaa 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -742,6 +742,13 @@ extern int ttyslot (void) __THROW;
extern int link (__const char *__from, __const char *__to)
__THROW __nonnull ((1, 2)) __wur;
+#ifdef __USE_GNU
+/* Like link but relative paths in TO and FROM are interpreted relative
+ to FROMFD and TOFD respectively. */
+extern int linkat (int __fromfd, __const char *__from, int __tofd,
+ __const char *__to) __THROW __nonnull ((2, 4)) __wur;
+#endif
+
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K
/* Make a symbolic link to FROM named TO. */
extern int symlink (__const char *__from, __const char *__to)
@@ -754,6 +761,17 @@ extern int readlink (__const char *__restrict __path, char *__restrict __buf,
size_t __len) __THROW __nonnull ((1, 2)) __wur;
#endif /* Use BSD. */
+#ifdef __USE_GNU
+/* Like symlink but a relative path in TO is interpreted relative to TOFD. */
+extern int symlinkat (__const char *__from, int __tofd,
+ __const char *__to) __THROW __nonnull ((1, 3)) __wur;
+
+/* Like readlink but a relative PATH is interpreted relative to FD. */
+extern int readlinkat (int __fd, __const char *__restrict __path,
+ char *__restrict __buf, size_t __len)
+ __THROW __nonnull ((2, 3)) __wur;
+#endif
+
/* Remove the link NAME. */
extern int unlink (__const char *__name) __THROW __nonnull ((1));