From 0ca03a4087a550646de7f26b6b53a932e8546474 Mon Sep 17 00:00:00 2001 From: Emil Velikov Date: Sat, 7 Mar 2015 00:58:39 +0000 Subject: drm: add drmGet(Primary|Render)DeviceNameFromFd functions Currently most places assume reliable primary(master) <> render node mapping. Although this may work in some cases, it is not correct. Add a couple of helpers that hide the details and provide the name of the master or render device name, given an fd. The latter may belong to either the master, control or render node device. v2: - Rename Device and Primary to Master (aka the /dev/dri/cardX device). - Check for the file via readdir_r() rather than stat(). - Wrap the check into a single function. - Return NULL for non-linux platforms. v3: - Don't segfault if name is NULL. - Update function names, as suggested by Frank Binns. v4: - Update commit message to reflect the function name changes. Cc: Frank Binns Cc: Daniel Vetter Cc: David Herrmann Signed-off-by: Emil Velikov Reviewed-by: Frank Binns --- xf86drm.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'xf86drm.h') diff --git a/xf86drm.h b/xf86drm.h index afd38a10..40c55c92 100644 --- a/xf86drm.h +++ b/xf86drm.h @@ -749,6 +749,9 @@ extern int drmGetNodeTypeFromFd(int fd); extern int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd); extern int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle); +extern char *drmGetPrimaryDeviceNameFromFd(int fd); +extern char *drmGetRenderDeviceNameFromFd(int fd); + #if defined(__cplusplus) || defined(c_plusplus) } #endif -- cgit v1.2.3