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authorEmmanuel Gil Peyrot <linkmauve@linkmauve.fr>2019-10-17 13:03:14 +0200
committerwm4 <1387750+wm4@users.noreply.github.com>2019-10-17 19:38:04 +0200
commita6000d3114214cf697d628ad09c8ca226c31340d (patch)
tree2890a0c1a3c4a1122ac92c00e5acf52a72e4c0d6 /wscript
parent273cc3055cb5829fe62dce88e596c21ae85ef1c2 (diff)
downloadmpv-a6000d3114214cf697d628ad09c8ca226c31340d.tar.bz2
mpv-a6000d3114214cf697d628ad09c8ca226c31340d.tar.xz
vo_wlshm: use memfd_create() instead of shm_open()
This syscall avoids the need to guess an unused filename in /dev/shm and allows seals to be placed on it. We immediately return if no fd got returned, as there isn’t anything we can do otherwise. Seals especially allow the compositor to drop the SIGBUS protections, since the kernel promises the fd won’t ever shrink. This removes support for any platform but Linux from this vo.
Diffstat (limited to 'wscript')
-rw-r--r--wscript6
1 files changed, 6 insertions, 0 deletions
diff --git a/wscript b/wscript
index 5baa274645..d4d1353112 100644
--- a/wscript
+++ b/wscript
@@ -323,6 +323,12 @@ iconv support use --disable-iconv.",
'func': check_statement('sys/vfs.h',
'struct statfs fs; fstatfs(0, &fs); fs.f_namelen')
}, {
+ 'name': 'memfd_create',
+ 'desc': "Linux's memfd_create()",
+ 'deps': 'os-linux',
+ 'func': check_statement('sys/mman.h',
+ 'memfd_create("mpv", MFD_CLOEXEC | MFD_ALLOW_SEALING)')
+ }, {
'name': '--libsmbclient',
'desc': 'Samba support (makes mpv GPLv3)',
'deps': 'libdl && gpl',