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do not crash on kernels without CONFIG_MEMFD_CREATE #1

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do not crash on kernels without CONFIG_MEMFD_CREATE #1

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18 changes: 17 additions & 1 deletion frontends/tiny/wl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -653,6 +653,22 @@ redraw(void *data)
pixman_region32_clear(&p->damage);
}

static int
memfd(void)
{
int fd;
char template[] = "/tmp/netsurf-XXXXXX";

fd = syscall(SYS_memfd_create, "netsurf", 0);
if (fd >= 0)
return fd;
fd = mkstemp(template);
if (fd < 0)
return fd;
(void)unlink(template);
return fd;
}

static struct wlimage *
createimage(int w, int h)
{
Expand All @@ -665,7 +681,7 @@ createimage(int w, int h)
goto err0;
stride = w * 4;
i->size = h * stride;
fd = syscall(SYS_memfd_create, "netsurf", 0);
fd = memfd();
if (fd < 0)
goto err1;
if (posix_fallocate(fd, 0, i->size) < 0)
Expand Down