Ticket #3780: unistd_macosx.diff

src/tools/fs_shell/unistd.cpp

@@ -260 +260 @@
                 } else
                     error = errno;
             }
+            #elif HAIKU_HOST_PLATFORM_DARWIN
+            {
+                // Darwin does not seems to provide a way to access disk geometry directly
+
+                struct stat status;
+
+                if (fstat(fd, &status) == 0) {
+                    // Do nothing for a regular file
+                    if (S_ISREG(status.st_mode))
+                        break;
+
+                    off_t mediaSize;
+
+                    if (ioctl(fd, DKIOCGETBLOCKCOUNT, &mediaSize) != 0) {
+                        error = errno;
+                        break;
+                    }
+
+                    geometry->head_count = 4;
+                    geometry->sectors_per_track = 63;
+                    geometry->cylinder_count = (mediaSize / geometry->head_count / geometry->sectors_per_track);
+                    
+                    while (geometry->cylinder_count > 1024 && geometry->head_count < 256) {
+                        geometry->head_count *= 2;
+                        geometry->cylinder_count /= 2;
+                    }
+                    
+                    if (geometry->head_count == 256) {
+                        geometry->head_count = 255;
+                        geometry->cylinder_count = (mediaSize / geometry->head_count / geometry->sectors_per_track);
+                    }
+                    
+                    if (ioctl(fd, DKIOCGETBLOCKSIZE, &geometry->bytes_per_sector) != 0) {
+                        error = errno;
+                        break;
+                    }
+
+                    uint32_t isWritable;
+                    if (ioctl(fd, DKIOCISWRITABLE, &isWritable) != 0) {
+                        error = errno;
+                        break;
+                    }                   
+
+                    geometry->read_only = !isWritable;
+                    
+                    // TODO: Get the real values...
+                    geometry->device_type = FSSH_B_DISK;
+                    geometry->removable = false;
+                    geometry->write_once = false;
+                    
+                    error = B_OK;
+                } else
+                    error = errno;
+            }
             #else
                 // Not implemented for this platform, i.e. we won't be able to
                 // deal with disk devices.