Adding upstream version 3.3.0.upstream/3.3.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 85 insertions, 0 deletions

diff --git a/Compat.h b/Compat.h
new file mode 100644
index 0000000..2bc12dc
--- /dev/null
+++ b/Compat.h
@@ -0,0 +1,85 @@
+#ifndef HEADER_Compat
+#define HEADER_Compat
+/*
+htop - Compat.h
+(C) 2020 htop dev team
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include <assert.h> // IWYU pragma: keep
+#include <fcntl.h>
+#include <stddef.h> // IWYU pragma: keep
+#include <unistd.h>
+#include <sys/stat.h> // IWYU pragma: keep
+
+
+int Compat_faccessat(int dirfd,
+                     const char* pathname,
+                     int mode,
+                     int flags);
+
+int Compat_fstatat(int dirfd,
+                   const char* dirpath,
+                   const char* pathname,
+                   struct stat* statbuf,
+                   int flags);
+
+#ifdef HAVE_OPENAT
+
+typedef int openat_arg_t;
+
+static inline void Compat_openatArgClose(openat_arg_t dirfd) {
+   close(dirfd);
+}
+
+static inline int Compat_openat(openat_arg_t dirfd, const char* pathname, int flags) {
+   return openat(dirfd, pathname, flags);
+}
+
+#else /* HAVE_OPENAT */
+
+typedef const char* openat_arg_t;
+
+static inline void Compat_openatArgClose(openat_arg_t dirpath) {
+   (void)dirpath;
+}
+
+int Compat_openat(openat_arg_t dirpath, const char* pathname, int flags);
+
+#endif /* HAVE_OPENAT */
+
+ssize_t Compat_readlinkat(int dirfd,
+                          const char* dirpath,
+                          const char* pathname,
+                          char* buf,
+                          size_t bufsize);
+
+ssize_t Compat_readlink(openat_arg_t dirfd,
+                        const char* pathname,
+                        char* buf,
+                        size_t bufsize);
+
+/*
+ * static_assert() hack for pre-C11
+ * TODO: drop after moving to -std=c11 or newer
+ */
+
+/* C11 guarantees _Static_assert is a keyword */
+#if (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112L
+# if !defined(_Static_assert)
+#  define _Static_assert(expr, msg)                                    \
+   extern int (*__Static_assert_function (void))                       \
+      [!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })]
+# endif
+#endif
+
+/* C23 will guarantee static_assert is a keyword or a macro */
+/* FIXME: replace 202300L with proper value once C23 is published */
+#if (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 202300L
+# if !defined(static_assert)
+#  define static_assert(expr, msg) _Static_assert(expr, msg)
+# endif
+#endif
+
+#endif /* HEADER_Compat */