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authorLennart Poettering <lennart@poettering.net>2015-10-27 01:02:30 +0100
committerLennart Poettering <lennart@poettering.net>2015-10-27 13:25:57 +0100
commitafc5dbf37fd2399d37976388d9dd9ab470ecf446 (patch)
treea312c7639a12b021289f595c602a519d8c3a73af /src/basic/io-util.h
parentceee6d3a44a81bcf42b21b777302a226422b11a1 (diff)
downloadsystemd-afc5dbf37fd2399d37976388d9dd9ab470ecf446.tar.gz
io-util.h: move iovec stuff from macro.h to io-util.h
Diffstat (limited to 'src/basic/io-util.h')
-rw-r--r--src/basic/io-util.h39
1 files changed, 38 insertions, 1 deletions
diff --git a/src/basic/io-util.h b/src/basic/io-util.h
index ff7c2a9ac4..cd2aa75ad2 100644
--- a/src/basic/io-util.h
+++ b/src/basic/io-util.h
@@ -21,8 +21,9 @@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <sys/types.h>
#include <stdbool.h>
+#include <sys/types.h>
+#include <sys/uio.h>
#include "time-util.h"
@@ -37,3 +38,39 @@ int pipe_eof(int fd);
int fd_wait_for_event(int fd, int event, usec_t timeout);
ssize_t sparse_write(int fd, const void *p, size_t sz, size_t run_length);
+
+#define IOVEC_SET_STRING(i, s) \
+ do { \
+ struct iovec *_i = &(i); \
+ char *_s = (char *)(s); \
+ _i->iov_base = _s; \
+ _i->iov_len = strlen(_s); \
+ } while(false)
+
+static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) {
+ unsigned j;
+ size_t r = 0;
+
+ for (j = 0; j < n; j++)
+ r += i[j].iov_len;
+
+ return r;
+}
+
+static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) {
+ unsigned j;
+
+ for (j = 0; j < n; j++) {
+ size_t sub;
+
+ if (_unlikely_(k <= 0))
+ break;
+
+ sub = MIN(i[j].iov_len, k);
+ i[j].iov_len -= sub;
+ i[j].iov_base = (uint8_t*) i[j].iov_base + sub;
+ k -= sub;
+ }
+
+ return k;
+}