Adding upstream version 255.4.upstream/255.4

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

1 files changed, 44 insertions, 0 deletions

diff --git a/src/basic/iovec-util.h b/src/basic/iovec-util.h
new file mode 100644
index 0000000..39feabd
--- /dev/null
+++ b/src/basic/iovec-util.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <stdbool.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+
+#include "alloc-util.h"
+#include "macro.h"
+
+size_t iovec_total_size(const struct iovec *iovec, size_t n);
+
+bool iovec_increment(struct iovec *iovec, size_t n, size_t k);
+
+#define IOVEC_MAKE(base, len) (struct iovec) { .iov_base = (base), .iov_len = (len) }
+#define IOVEC_MAKE_STRING(string)                       \
+        ({                                              \
+                const char *_s = (string);              \
+                IOVEC_MAKE((char*) _s, strlen(_s));     \
+        })
+
+static inline void iovec_done(struct iovec *iovec) {
+        /* A _cleanup_() helper that frees the iov_base in the iovec */
+        assert(iovec);
+
+        iovec->iov_base = mfree(iovec->iov_base);
+        iovec->iov_len = 0;
+}
+
+static inline void iovec_done_erase(struct iovec *iovec) {
+        assert(iovec);
+
+        iovec->iov_base = erase_and_free(iovec->iov_base);
+        iovec->iov_len = 0;
+}
+
+static inline bool iovec_is_set(const struct iovec *iovec) {
+        return iovec && iovec->iov_len > 0 && iovec->iov_base;
+}
+
+char* set_iovec_string_field(struct iovec *iovec, size_t *n_iovec, const char *field, const char *value);
+char* set_iovec_string_field_free(struct iovec *iovec, size_t *n_iovec, const char *field, char *value);
+
+void iovec_array_free(struct iovec *iovec, size_t n);