Fix: data reception is called event when only FDS are expected for reception

[lttng-tools.git] / src / common / unix.c

diff --git a/src/common/unix.c b/src/common/unix.c
index ae2b822af5a57debc7e0288011ab18a36abdd940..023bff847273df004c537593cbbbceb012540681 100644 (file)
--- a/src/common/unix.c
+++ b/src/common/unix.c
@@ -181,6 +181,10 @@ ssize_t lttcomm_recv_unix_sock(int sock, void *buf, size_t len)
        ssize_t ret = -1;
        size_t len_last;
 
+       assert(sock);
+       assert(buf);
+       assert(len > 0);
+
        memset(&msg, 0, sizeof(msg));
 
        iov[0].iov_base = buf;
@@ -223,6 +227,10 @@ ssize_t lttcomm_recv_unix_sock_non_block(int sock, void *buf, size_t len)
        struct iovec iov[1];
        ssize_t ret;
 
+       assert(sock);
+       assert(buf);
+       assert(len > 0);
+
        memset(&msg, 0, sizeof(msg));
 
        iov[0].iov_base = buf;
@@ -271,6 +279,10 @@ ssize_t lttcomm_send_unix_sock(int sock, const void *buf, size_t len)
        struct iovec iov[1];
        ssize_t ret;
 
+       assert(sock);
+       assert(buf);
+       assert(len > 0);
+
        memset(&msg, 0, sizeof(msg));
 
        iov[0].iov_base = (void *) buf;
@@ -321,6 +333,10 @@ ssize_t lttcomm_send_unix_sock_non_block(int sock, const void *buf, size_t len)
        struct iovec iov[1];
        ssize_t ret;
 
+       assert(sock);
+       assert(buf);
+       assert(len > 0);
+
        memset(&msg, 0, sizeof(msg));
 
        iov[0].iov_base = (void *) buf;
@@ -395,6 +411,10 @@ ssize_t lttcomm_send_fds_unix_sock(int sock, const int *fds, size_t nb_fd)
        char tmp[CMSG_SPACE(sizeof_fds)];
        char dummy = 0;
 
+       assert(sock);
+       assert(fds);
+       assert(nb_fd > 0);
+
        memset(&msg, 0, sizeof(msg));
        memset(tmp, 0, sizeof(tmp));
 
@@ -525,6 +545,10 @@ ssize_t lttcomm_send_fds_unix_sock_non_block(int sock, const int *fds, size_t nb
        char tmp[CMSG_SPACE(sizeof_fds)];
        char dummy = 0;
 
+       assert(sock);
+       assert(fds);
+       assert(nb_fd > 0);
+
        memset(&msg, 0, sizeof(msg));
        memset(tmp, 0, sizeof(tmp));
 
@@ -614,6 +638,10 @@ ssize_t lttcomm_recv_fds_unix_sock(int sock, int *fds, size_t nb_fd)
        struct msghdr msg;
        char dummy;
 
+       assert(sock);
+       assert(fds);
+       assert(nb_fd > 0);
+
        memset(&msg, 0, sizeof(msg));
 
        /* Prepare to receive the structures */
@@ -763,6 +791,10 @@ ssize_t _lttcomm_recv_payload_fds_unix_sock(int sock, size_t nb_fd,
        int default_value = -1;
        struct lttng_dynamic_array raw_fds;
 
+       assert(sock);
+       assert(payload);
+       assert(nb_fd > 0);
+
        lttng_dynamic_array_init(&raw_fds, sizeof(int), close_raw_fd);
 
        for (i = 0; i < nb_fd; i++) {
@@ -829,6 +861,10 @@ ssize_t lttcomm_recv_fds_unix_sock_non_block(int sock, int *fds, size_t nb_fd)
        struct cmsghdr *cmsg;
        size_t sizeof_fds = nb_fd * sizeof(int);
 
+       assert(sock);
+       assert(fds);
+       assert(nb_fd > 0);
+
 #ifdef __linux__
 /* Account for the struct ucred cmsg in the buffer size */
 #define LTTNG_SOCK_RECV_FDS_BUF_SIZE CMSG_SPACE(sizeof_fds) + CMSG_SPACE(sizeof(struct ucred))
@@ -967,6 +1003,10 @@ ssize_t lttcomm_send_creds_unix_sock(int sock, const void *buf, size_t len)
 
        memset(&msg, 0, sizeof(msg));
 
+       assert(sock);
+       assert(buf);
+       assert(len > 0);
+
        iov[0].iov_base = (void *) buf;
        iov[0].iov_len = len;
        msg.msg_iov = iov;
@@ -1025,13 +1065,12 @@ ssize_t lttcomm_recv_creds_unix_sock(int sock, void *buf, size_t len,
        char anc_buf[CMSG_SPACE(sizeof_cred)];
 #endif /* __linux__ */
 
-       memset(&msg, 0, sizeof(msg));
+       assert(sock);
+       assert(buf);
+       assert(len > 0);
+       assert(creds);
 
-       /* Not allowed */
-       if (creds == NULL) {
-               ret = -1;
-               goto end;
-       }
+       memset(&msg, 0, sizeof(msg));
 
        /* Prepare to receive the structures */
        iov[0].iov_base = buf;