Proper exception strings to Card::Card()

diff --git a/libkms++/card.cpp b/libkms++/card.cpp
index 3dea542d5123c2caac5574bcf0383fcafeab45ca..626c424be365610c07119489e5b6f7a1726ccf61 100644 (file)
--- a/libkms++/card.cpp
+++ b/libkms++/card.cpp
@@ -26,7 +26,8 @@ Card::Card()
 
        int fd = open(card, O_RDWR | O_CLOEXEC);
        if (fd < 0)
-               throw invalid_argument("foo");
+               throw invalid_argument((string(strerror(errno)) +
+                                       " opening " + card).c_str());
        m_fd = fd;
 
        int r;
@@ -36,7 +37,7 @@ Card::Card()
 
        r = drmSetClientCap(m_fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
        if (r)
-               throw invalid_argument("foo");
+               throw invalid_argument("Can't set universal planes");
 
        r = drmSetClientCap(m_fd, DRM_CLIENT_CAP_ATOMIC, 1);
        m_has_atomic = r == 0;
@@ -44,11 +45,11 @@ Card::Card()
        uint64_t has_dumb;
        r = drmGetCap(fd, DRM_CAP_DUMB_BUFFER, &has_dumb);
        if (r || !has_dumb)
-               throw invalid_argument("foo");
+               throw invalid_argument("Dumb buffers not available");
 
        auto res = drmModeGetResources(m_fd);
        if (!res)
-               throw invalid_argument("foo");
+               throw invalid_argument("Can't get card resources");
 
        for (int i = 0; i < res->count_connectors; ++i) {
                uint32_t id = res->connectors[i];