diff options
author | Thomas White <taw@bitwiz.org.uk> | 2009-05-02 20:01:56 +0100 |
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committer | Thomas White <taw@bitwiz.org.uk> | 2009-05-02 20:01:56 +0100 |
commit | e422335ee7e950236c478eeefa1fc5cde90fd3aa (patch) | |
tree | 42779d17566d08e6980b36c9733353feb58b80c5 /utils.c | |
parent | 26353be0247589e048198ebcf841629540945bc9 (diff) |
Move authentication to a common file
Diffstat (limited to 'utils.c')
-rw-r--r-- | utils.c | 86 |
1 files changed, 86 insertions, 0 deletions
@@ -0,0 +1,86 @@ +/* + * utils.c + * + * Common bits + * + * (c) 2009 Thomas White <taw@bitwiz.org.uk> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <X11/Xlib.h> +#include <X11/Xutil.h> + +#include <X11/Xmd.h> +#include <stdint.h> +#include <drm/drm.h> + +#include "dri2.h" + + +#define RING_LOCALS int __count = 0; +#define OUT_REG(reg, val) cmds[__count++] = (reg); cmds[__count++] = (val); + + +int do_drm_authentication(Display *dpy) +{ + int scrnum; + Window root; + char *driver; + char *device; + int fd; + drm_magic_t magic; + + /* Get default screen, root window and default visual */ + scrnum = DefaultScreen(dpy); + root = RootWindow(dpy, scrnum); + + /* Get device name */ + if ( !DRI2Connect(dpy, root, &driver, &device) ) { + fprintf(stderr, "DRI2Connect failed\n"); + return -1; + } + + /* Open DRM device */ + fd = open(device, O_RDWR); + if ( fd < 0 ) { + fprintf(stderr, "Couldn't open '%s': %s\n", + device, strerror(errno)); + return -1; + } + + /* Get an authentication token */ + if ( drmGetMagic(fd, &magic) ) { + fprintf(stderr, "drmGetMagic failed\n"); + return -1; + } + + /* Authenticate */ + if ( DRI2Authenticate(dpy, root, magic) == False ) { + fprintf(stderr, "DRI2Authenticate failed\n"); + return -1; + } + + return fd; +} |