diff options
Diffstat (limited to 'fakefbdev/FakeFBDev.cpp')
-rw-r--r-- | fakefbdev/FakeFBDev.cpp | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/fakefbdev/FakeFBDev.cpp b/fakefbdev/FakeFBDev.cpp new file mode 100644 index 0000000..a37b0a0 --- /dev/null +++ b/fakefbdev/FakeFBDev.cpp @@ -0,0 +1,59 @@ +#include "IOCTL.h" +#include "SharedBuffer.h" + +#include <cstring> +#include <dlfcn.h> +#include <string> +#include <sys/types.h> +#include <unistd.h> + +SharedFB fb(default_fb_name); + +extern "C" { + +int +open64(const char* pathname, int flags, mode_t mode = 0) { + if (pathname == std::string("/dev/fb0")) { + return fb.fd; + } + + static const auto func_open = + (int (*)(const char*, int, mode_t))dlsym(RTLD_NEXT, "open64"); + + return func_open(pathname, flags, mode); +} + +int +open(const char* pathname, int flags, mode_t mode = 0) { + if (pathname == std::string("/dev/fb0")) { + return fb.fd; + } + + static const auto func_open = + (int (*)(const char*, int, mode_t))dlsym(RTLD_NEXT, "open"); + + return func_open(pathname, flags, mode); +} + +int +close(int fd) { + if (fd == fb.fd) { + return 0; + } + + static const auto func_close = (int (*)(int))dlsym(RTLD_NEXT, "close"); + return func_close(fd); +} + +int +ioctl(int fd, unsigned long request, char* ptr) { + if (fd == fb.fd) { + return handleIOCTL(request, ptr); + } + + static auto func_ioctl = + (int (*)(int, unsigned long request, ...))dlsym(RTLD_NEXT, "ioctl"); + + return func_ioctl(fd, request, ptr); +} +} |