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Integrate base-address statedump into lttng-ust
[lttng-ust.git]
/
liblttng-ust-comm
/
lttng-ust-comm.c
diff --git
a/liblttng-ust-comm/lttng-ust-comm.c
b/liblttng-ust-comm/lttng-ust-comm.c
index a31786ac52000994feec90a754b5f9ba9701c16c..751ad2e3cf2add1ffd805c9ca4df802034e793b1 100644
(file)
--- a/
liblttng-ust-comm/lttng-ust-comm.c
+++ b/
liblttng-ust-comm/lttng-ust-comm.c
@@
-265,7
+265,8
@@
ssize_t ustcomm_recv_unix_sock(int sock, void *buf, size_t len)
{
struct msghdr msg;
struct iovec iov[1];
{
struct msghdr msg;
struct iovec iov[1];
- ssize_t ret;
+ ssize_t ret = -1;
+ size_t len_last;
memset(&msg, 0, sizeof(msg));
memset(&msg, 0, sizeof(msg));
@@
-275,8
+276,14
@@
ssize_t ustcomm_recv_unix_sock(int sock, void *buf, size_t len)
msg.msg_iovlen = 1;
do {
msg.msg_iovlen = 1;
do {
+ len_last = iov[0].iov_len;
ret = recvmsg(sock, &msg, 0);
ret = recvmsg(sock, &msg, 0);
- } while (ret < 0 && errno == EINTR);
+ if (ret > 0) {
+ iov[0].iov_base += ret;
+ iov[0].iov_len -= ret;
+ assert(ret <= len_last);
+ }
+ } while ((ret > 0 && ret < len_last) || (ret < 0 && errno == EINTR));
if (ret < 0) {
int shutret;
if (ret < 0) {
int shutret;
@@
-290,7
+297,10
@@
ssize_t ustcomm_recv_unix_sock(int sock, void *buf, size_t len)
shutret = shutdown(sock, SHUT_RDWR);
if (shutret)
ERR("Socket shutdown error");
shutret = shutdown(sock, SHUT_RDWR);
if (shutret)
ERR("Socket shutdown error");
+ } else if (ret > 0) {
+ ret = len;
}
}
+ /* ret = 0 means an orderly shutdown. */
return ret;
}
return ret;
}
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