Merge "Handle screendumps for all framebuffer sizes"

void framebuffer_service(int fd, void *cookie)

{

    struct fbinfo fbinfo;

    unsigned int i;

    unsigned int i, bsize;

    char buf[640];

    int fd_screencap;

    int w, h, f;

    int fds[2];

    if (pipe(fds) < 0) goto done;

    if (pipe(fds) < 0) goto pipefail;

    pid_t pid = fork();

    if (pid < 0) goto done;

    if(writex(fd, &fbinfo, sizeof(fbinfo))) goto done;

    /* write data */

    for(i = 0; i < fbinfo.size; i += sizeof(buf)) {

      if(readx(fd_screencap, buf, sizeof(buf))) goto done;

      if(writex(fd, buf, sizeof(buf))) goto done;

    for(i = 0; i < fbinfo.size; i += bsize) {

      bsize = sizeof(buf);

      if (i + bsize > fbinfo.size)

        bsize = fbinfo.size - i;

      if(readx(fd_screencap, buf, bsize)) goto done;

      if(writex(fd, buf, bsize)) goto done;

    }

    if(readx(fd_screencap, buf, fbinfo.size % sizeof(buf))) goto done;

    if(writex(fd, buf, fbinfo.size % sizeof(buf))) goto done;

done:

    TEMP_FAILURE_RETRY(waitpid(pid, NULL, 0));

    close(fds[0]);

    close(fds[1]);

pipefail:

    close(fd);

}