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bar/wayland: create memfd with MFD_NOEXEC_SEAL

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Daniel Eklöf 2023-10-08 11:12:15 +02:00
parent 7fbc1f2c44
commit cbd3bebb04
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1 changed files with 7 additions and 1 deletions
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8
bar/wayland.c
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@ -28,6 +28,12 @@
#include "private.h" #include "private.h"
#if defined(MFD_NOEXEC_SEAL)
#define YAMBAR_MFD_FLAGS (MFD_CLOEXEC | MFD_ALLOW_SEALING | MFD_NOEXEC_SEAL)
#else
#define YAMBAR_MFD_FLAGS (MFD_CLOEXEC | MFD_ALLOW_SEALING)
#endif
struct buffer { struct buffer {
bool busy; bool busy;
size_t width; size_t width;
@ -907,7 +913,7 @@ get_buffer(struct wayland_backend *backend)
/* Backing memory for SHM */ /* Backing memory for SHM */
#if defined(MEMFD_CREATE) #if defined(MEMFD_CREATE)
pool_fd = memfd_create("yambar-wayland-shm-buffer-pool", MFD_CLOEXEC); pool_fd = memfd_create("yambar-wayland-shm-buffer-pool", YAMBAR_MFD_FLAGS);
#elif defined(__FreeBSD__) #elif defined(__FreeBSD__)
// memfd_create on FreeBSD 13 is SHM_ANON without sealing support // memfd_create on FreeBSD 13 is SHM_ANON without sealing support
pool_fd = shm_open(SHM_ANON, O_RDWR | O_CLOEXEC, 0600); pool_fd = shm_open(SHM_ANON, O_RDWR | O_CLOEXEC, 0600);