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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/basic/iovec-util.h
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/basic/iovec-util.h')
-rw-r--r--src/basic/iovec-util.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/src/basic/iovec-util.h b/src/basic/iovec-util.h
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+++ b/src/basic/iovec-util.h
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+/* 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);