mirrors/wlroots
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wlroots/wlroots.git synced 2025-11-02 09:01:38 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Use _POSIX_C_SOURCE, use shm_open

Browse source
This commit is contained in:
emersion 2018-11-05 22:51:23 +01:00
parent d7b010024a
commit 2d0c5ec78e
No known key found for this signature in database
GPG key ID: 0FDE7BE0E88F5E48
18 changed files with 32 additions and 61 deletions
Download patch file Download diff file Expand all files Collapse all files

36
examples/screenshot.c
View file

@ -21,8 +21,7 @@
* DEALINGS IN THE SOFTWARE.
*/
#define _XOPEN_SOURCE 700
#define _POSIX_C_SOURCE 199309L
#define _POSIX_C_SOURCE 200112L
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
@ -35,7 +34,6 @@
#include <sys/wait.h>
#include <unistd.h>
#include <wayland-client.h>
#include <wlr/util/log.h>
#include "screenshooter-client-protocol.h"
static struct wl_shm *shm = NULL;
@ -111,12 +109,18 @@ static const struct wl_registry_listener registry_listener = {
.global_remove = handle_global_remove,
};
static int backingfile(off_t size) {
char template[] = "/tmp/wlroots-shared-XXXXXX";
int fd = mkstemp(template);
static struct wl_buffer *create_shm_buffer(int width, int height,
void **data_out) {
int stride = width * 4;
int size = stride * height;
const char shm_name[] = "/wlroots-screenshot";
int fd = shm_open(shm_name, O_RDWR | O_CREAT | O_EXCL, 0);
if (fd < 0) {
return -1;
fprintf(stderr, "shm_open failed\n");
return NULL;
}
shm_unlink(shm_name);
int ret;
while ((ret = ftruncate(fd, size)) == EINTR) {
@ -124,21 +128,7 @@ static int backingfile(off_t size) {
}
if (ret < 0) {
close(fd);
return -1;
}
unlink(template);
return fd;
}
static struct wl_buffer *create_shm_buffer(int width, int height,
void **data_out) {
int stride = width * 4;
int size = stride * height;
int fd = backingfile(size);
if (fd < 0) {
fprintf(stderr, "creating a buffer file for %d B failed: %m\n", size);
fprintf(stderr, "ftruncate failed\n");
return NULL;
}
@ -200,8 +190,6 @@ static void write_image(const char *filename, int width, int height,
}
int main(int argc, char *argv[]) {
wlr_log_init(WLR_DEBUG, NULL);
struct wl_display * display = wl_display_connect(NULL);
if (display == NULL) {
fprintf(stderr, "failed to create display: %m\n");