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wayland: Use shm_open(SHM_ANON) on FreeBSD

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This functionality is similar to Linux's memfd. It creates anonymous shared memory without touching the filesystem, which allows it to work in Capsicum capability mode (sandbox).
This commit is contained in:
myfreeweb 2018-06-19 14:49:18 +00:00 committed by Matthias Clasen
parent cbbb7604b6
commit a1bcbdd02a
1 changed files with 4 additions and 0 deletions
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4
gdk/wayland/gdkdisplay-wayland.c
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@ -1210,6 +1210,9 @@ open_shared_memory (void)
if (force_shm_open) if (force_shm_open)
{ {
#if defined (__FreeBSD__)
ret = shm_open (SHM_ANON, O_CREAT | O_EXCL | O_RDWR | O_CLOEXEC, 0600);
#else
char name[NAME_MAX - 1] = ""; char name[NAME_MAX - 1] = "";
sprintf (name, "/gdk-wayland-%x", g_random_int ()); sprintf (name, "/gdk-wayland-%x", g_random_int ());
@ -1220,6 +1223,7 @@ open_shared_memory (void)
shm_unlink (name); shm_unlink (name);
else if (errno == EEXIST) else if (errno == EEXIST)
continue; continue;
#endif
} }
} }
while (ret < 0 && errno == EINTR); while (ret < 0 && errno == EINTR);