iovec-util: introduce several helper functions

2026-06-27 14:04:48 +09:00
parent ee6522d036
commit 82ff3f71f5
2 changed files with 29 additions and 0 deletions
@@ -10,6 +10,8 @@
 extern const struct iovec iovec_nul_byte; /* Points to a single NUL byte */
 extern const struct iovec iovec_empty;    /* Points to an empty, but valid (i.e. non-NULL) pointer */

+int iovec_alloc(size_t n, struct iovec *ret);
+
 size_t iovec_total_size(const struct iovec *iovec, size_t n) _nonnull_if_nonzero_(1, 2);

 bool iovec_inc_many(struct iovec *iovec, size_t n, size_t k) _nonnull_if_nonzero_(1, 2);
@@ -31,6 +33,13 @@ struct iovec* iovec_make_string(struct iovec *iovec, const char *s);
                .iov_len = 1,                                   \
        }

+#define IOVEC_ALLOCA(n)                              \
+        ({                                           \
+                size_t _n_ = (n);                    \
+                IOVEC_MAKE(alloca_safe(_n_), _n_);   \
+        })
+
+void iovec_erase(struct iovec *iovec);
 void iovec_done_erase(struct iovec *iovec);

 char* set_iovec_string_field(struct iovec *iovec, size_t *n_iovec, const char *field, const char *value);