Merge branch 'master' of git://git.lttng.org/lttng-tools
[lttng-tools.git] / src / common / sessiond-comm / sessiond-comm.c
index fdd5856c0c0fe2328e12ceb050f6bcbd9814c72e..96615f4389adad78ac3804a9cd9c1b1dba7a763a 100644 (file)
@@ -24,7 +24,6 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <sys/un.h>
 #include <unistd.h>
 #include <errno.h>
 
@@ -431,7 +430,7 @@ ssize_t lttcomm_recv_fds_unix_sock(int sock, int *fds, size_t nb_fd)
        }
        if (cmsg->cmsg_len != CMSG_LEN(sizeof_fds)) {
                fprintf(stderr, "Error: Received %zu bytes of ancillary data, expected %zu\n",
-                               cmsg->cmsg_len, CMSG_LEN(sizeof_fds));
+                               (size_t) cmsg->cmsg_len, (size_t) CMSG_LEN(sizeof_fds));
                ret = -1;
                goto end;
        }
@@ -449,12 +448,14 @@ end:
 ssize_t lttcomm_send_creds_unix_sock(int sock, void *buf, size_t len)
 {
        struct msghdr msg;
-       struct cmsghdr *cmptr;
        struct iovec iov[1];
        ssize_t ret = -1;
-       struct ucred *creds;
-       size_t sizeof_cred = sizeof(struct ucred);
+#ifdef __linux__
+       struct cmsghdr *cmptr;
+       size_t sizeof_cred = sizeof(lttng_sock_cred);
        char anc_buf[CMSG_SPACE(sizeof_cred)];
+       lttng_sock_cred *creds;
+#endif /* __linux__ */
 
        memset(&msg, 0, sizeof(msg));
 
@@ -463,19 +464,21 @@ ssize_t lttcomm_send_creds_unix_sock(int sock, void *buf, size_t len)
        msg.msg_iov = iov;
        msg.msg_iovlen = 1;
 
+#ifdef __linux__
        msg.msg_control = (caddr_t) anc_buf;
        msg.msg_controllen = CMSG_LEN(sizeof_cred);
 
        cmptr = CMSG_FIRSTHDR(&msg);
        cmptr->cmsg_level = SOL_SOCKET;
-       cmptr->cmsg_type = SCM_CREDENTIALS;
+       cmptr->cmsg_type = LTTNG_SOCK_CREDS;
        cmptr->cmsg_len = CMSG_LEN(sizeof_cred);
 
-       creds = (struct ucred *) CMSG_DATA(cmptr);
+       creds = (lttng_sock_cred*) CMSG_DATA(cmptr);
 
-       creds->uid = geteuid();
-       creds->gid = getegid();
-       creds->pid = getpid();
+       LTTNG_SOCK_SET_UID_CRED(creds, geteuid());
+       LTTNG_SOCK_SET_GID_CRED(creds, getegid());
+       LTTNG_SOCK_SET_PID_CRED(creds, getpid());
+#endif /* __linux__ */
 
        ret = sendmsg(sock, &msg, 0);
        if (ret < 0) {
@@ -496,14 +499,16 @@ ssize_t lttcomm_send_creds_unix_sock(int sock, void *buf, size_t len)
  * Returns the size of received data, or negative error value.
  */
 ssize_t lttcomm_recv_creds_unix_sock(int sock, void *buf, size_t len,
-               struct ucred *creds)
+               lttng_sock_cred *creds)
 {
        struct msghdr msg;
-       struct cmsghdr *cmptr;
        struct iovec iov[1];
        ssize_t ret;
-       size_t sizeof_cred = sizeof(struct ucred);
+#ifdef __linux__
+       struct cmsghdr *cmptr;
+       size_t sizeof_cred = sizeof(lttng_sock_cred);
        char anc_buf[CMSG_SPACE(sizeof_cred)];
+#endif /* __linux__ */
 
        memset(&msg, 0, sizeof(msg));
 
@@ -519,8 +524,10 @@ ssize_t lttcomm_recv_creds_unix_sock(int sock, void *buf, size_t len,
        msg.msg_iov = iov;
        msg.msg_iovlen = 1;
 
+#ifdef __linux__
        msg.msg_control = anc_buf;
        msg.msg_controllen = sizeof(anc_buf);
+#endif /* __linux__ */
 
        ret = recvmsg(sock, &msg, 0);
        if (ret < 0) {
@@ -528,6 +535,7 @@ ssize_t lttcomm_recv_creds_unix_sock(int sock, void *buf, size_t len,
                goto end;
        }
 
+#ifdef __linux__
        if (msg.msg_flags & MSG_CTRUNC) {
                fprintf(stderr, "Error: Control message truncated.\n");
                ret = -1;
@@ -542,7 +550,7 @@ ssize_t lttcomm_recv_creds_unix_sock(int sock, void *buf, size_t len,
        }
 
        if (cmptr->cmsg_level != SOL_SOCKET ||
-                       cmptr->cmsg_type != SCM_CREDENTIALS) {
+                       cmptr->cmsg_type != LTTNG_SOCK_CREDS) {
                fprintf(stderr, "Didn't received any credentials\n");
                ret = -1;
                goto end;
@@ -550,12 +558,24 @@ ssize_t lttcomm_recv_creds_unix_sock(int sock, void *buf, size_t len,
 
        if (cmptr->cmsg_len != CMSG_LEN(sizeof_cred)) {
                fprintf(stderr, "Error: Received %zu bytes of ancillary data, expected %zu\n",
-                               cmptr->cmsg_len, CMSG_LEN(sizeof_cred));
+                               (size_t) cmptr->cmsg_len, (size_t) CMSG_LEN(sizeof_cred));
                ret = -1;
                goto end;
        }
 
        memcpy(creds, CMSG_DATA(cmptr), sizeof_cred);
+#elif defined(__FreeBSD__)
+       {
+               int peer_ret;
+
+               peer_ret = getpeereid(sock, &creds->uid, &creds->gid);
+               if (peer_ret != 0) {
+                       return peer_ret;
+               }
+       }
+#else
+#error "Please implement credential support for your OS."
+#endif /* __linux__ */
 
 end:
        return ret;
@@ -564,6 +584,7 @@ end:
 /*
  * Set socket option to use credentials passing.
  */
+#ifdef __linux__
 int lttcomm_setsockopt_creds_unix_sock(int sock)
 {
        int ret, on = 1;
@@ -573,6 +594,13 @@ int lttcomm_setsockopt_creds_unix_sock(int sock)
        if (ret < 0) {
                PERROR("setsockopt creds unix sock");
        }
-
        return ret;
 }
+#elif defined(__FreeBSD__)
+int lttcomm_setsockopt_creds_unix_sock(int sock)
+{
+       return 0;
+}
+#else
+#error "Please implement credential support for your OS."
+#endif /* __linux__ */
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