[Spice-devel] [PATCH spice-gtk v2 28/33] fixup! usb-redir: add implementation of emulated CD device

[Frediano Ziglio]

Avoid file_object, it's not necessary to keep it.
---
 src/usb-device-cd.c | 116 +++++++++++++++++++++-----------------------
 1 file changed, 55 insertions(+), 61 deletions(-)

diff --git a/src/usb-device-cd.c b/src/usb-device-cd.c
index 03b8f5ee..c33bb290 100644
--- a/src/usb-device-cd.c
+++ b/src/usb-device-cd.c
@@ -48,7 +48,6 @@
 
 typedef struct SpiceCdLU {
     char *filename;
-    GFile *file_object;
     GFileInputStream *stream;
     uint64_t size;
     uint32_t blockSize;
@@ -95,7 +94,6 @@ typedef struct SpiceUsbEmulatedDevice UsbCd;
 
 static int cd_device_open_stream(SpiceCdLU *unit, const char *filename)
 {
-    int error = 0;
     unit->device = 0;
 
     if (!unit->filename && !filename) {
@@ -111,33 +109,32 @@ static int cd_device_open_stream(SpiceCdLU *unit, const char *filename)
     }
 
     int fd = open(unit->filename, O_RDONLY | O_NONBLOCK);
-    if (fd > 0) {
-        struct stat file_stat = { 0 };
-        if (fstat(fd, &file_stat) || file_stat.st_size == 0) {
-            file_stat.st_size = 0;
-            unit->device = 1;
-            if (!ioctl(fd, BLKGETSIZE64, &file_stat.st_size) &&
-                !ioctl(fd, BLKSSZGET, &unit->blockSize)) {
-            }
-        }
-        unit->size = file_stat.st_size;
-        close(fd);
-        if (unit->size) {
-            unit->file_object = g_file_new_for_path(unit->filename);
-            unit->stream = g_file_read(unit->file_object, NULL, NULL);
-        }
-        if (!unit->stream) {
-            SPICE_DEBUG("%s: can't open stream on %s", __FUNCTION__, unit->filename);
-            g_clear_object(&unit->file_object);
-            error = -1;
+    if (fd < 0) {
+        SPICE_DEBUG("%s: can't open file %s", __FUNCTION__, unit->filename);
+        return -1;
+    }
+
+    struct stat file_stat = { 0 };
+    if (fstat(fd, &file_stat) || file_stat.st_size == 0) {
+        file_stat.st_size = 0;
+        unit->device = 1;
+        if (!ioctl(fd, BLKGETSIZE64, &file_stat.st_size) &&
+            !ioctl(fd, BLKSSZGET, &unit->blockSize)) {
         }
     }
-    else {
-        SPICE_DEBUG("%s: can't open file %s", __FUNCTION__, unit->filename);
-        error = -1;
+    unit->size = file_stat.st_size;
+    close(fd);
+    if (unit->size) {
+        GFile *file_object = g_file_new_for_path(unit->filename);
+        unit->stream = g_file_read(file_object, NULL, NULL);
+        g_clear_object(&file_object);
+    }
+    if (!unit->stream) {
+        SPICE_DEBUG("%s: can't open stream on %s", __FUNCTION__, unit->filename);
+        return -1;
     }
 
-    return error;
+    return 0;
 }
 
 static int cd_device_load(SpiceCdLU *unit, gboolean load)
@@ -235,7 +232,6 @@ static gboolean check_device(HANDLE h)
 
 static int cd_device_open_stream(SpiceCdLU *unit, const char *filename)
 {
-    int error = 0;
     HANDLE h;
     unit->device = 0;
     if (!unit->filename && !filename) {
@@ -254,42 +250,41 @@ static int cd_device_open_stream(SpiceCdLU *unit, const char *filename)
         unit->filename = g_strdup(filename);
     }
     h = open_file(unit->filename);
-    if (h) {
-        LARGE_INTEGER size = { 0 };
-        if (!GetFileSizeEx(h, &size)) {
-            uint64_t buffer[256];
-            uint32_t res;
-            unit->device = check_device(h);
-            SPICE_DEBUG("%s: CD device %srecognized on %s",
-                __FUNCTION__, unit->device ? "" : "NOT ", unit->filename);
-            res = ioctl_out(h, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX,
-                            buffer, sizeof(buffer));
-            if (!res)
-            {
-                DISK_GEOMETRY_EX *pg = (DISK_GEOMETRY_EX *)buffer;
-                unit->blockSize = pg->Geometry.BytesPerSector;
-                size = pg->DiskSize;
-            } else {
-                SPICE_DEBUG("%s: can't obtain size of %s (error %u)",
-                    __FUNCTION__, unit->filename, res);
-            }
-        }
-        unit->size = size.QuadPart;
-        CloseHandle(h);
-        if (unit->size) {
-            unit->file_object = g_file_new_for_path(unit->filename);
-            unit->stream = g_file_read(unit->file_object, NULL, NULL);
-        }
-        if (!unit->stream) {
-            SPICE_DEBUG("%s: can't open stream on %s", __FUNCTION__, unit->filename);
-            g_clear_object(&unit->file_object);
-            error = -1;
-        }
-    } else {
+    if (!h) {
         SPICE_DEBUG("%s: can't open file %s", __FUNCTION__, unit->filename);
-        error = -1;
+        return -1;
     }
-    return error;
+
+    LARGE_INTEGER size = { 0 };
+    if (!GetFileSizeEx(h, &size)) {
+        uint64_t buffer[256];
+        uint32_t res;
+        unit->device = check_device(h);
+        SPICE_DEBUG("%s: CD device %srecognized on %s",
+            __FUNCTION__, unit->device ? "" : "NOT ", unit->filename);
+        res = ioctl_out(h, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX,
+                        buffer, sizeof(buffer));
+        if (!res) {
+            DISK_GEOMETRY_EX *pg = (DISK_GEOMETRY_EX *)buffer;
+            unit->blockSize = pg->Geometry.BytesPerSector;
+            size = pg->DiskSize;
+        } else {
+            SPICE_DEBUG("%s: can't obtain size of %s (error %u)",
+                __FUNCTION__, unit->filename, res);
+        }
+    }
+    unit->size = size.QuadPart;
+    CloseHandle(h);
+    if (unit->size) {
+        GFile *file_object = g_file_new_for_path(unit->filename);
+        unit->stream = g_file_read(file_object, NULL, NULL);
+        g_clear_object(&file_object);
+    }
+    if (!unit->stream) {
+        SPICE_DEBUG("%s: can't open stream on %s", __FUNCTION__, unit->filename);
+        return -1;
+    }
+    return 0;
 }
 
 static int cd_device_load(SpiceCdLU *unit, gboolean load)
@@ -349,7 +344,6 @@ static gboolean open_stream(SpiceCdLU *unit, const char *filename)
 static void close_stream(SpiceCdLU *unit)
 {
     g_clear_object(&unit->stream);
-    g_clear_object(&unit->file_object);
 }
 
 static gboolean load_lun(UsbCd *d, int unit, gboolean load)
-- 
2.20.1