diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/wayland-shm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/wayland-shm.c b/src/wayland-shm.c index 27d5b00..63ac0d7 100644 --- a/src/wayland-shm.c +++ b/src/wayland-shm.c @@ -38,6 +38,7 @@ #include <stdint.h> #include <string.h> #include <sys/mman.h> +#include <sys/stat.h> #include <unistd.h> #include <assert.h> #include <signal.h> @@ -299,6 +300,7 @@ shm_create_pool(struct wl_client *client, struct wl_resource *resource, uint32_t id, int fd, int32_t size) { struct wl_shm_pool *pool; + struct stat statbuf; int seals; int prot; int flags; @@ -320,7 +322,11 @@ shm_create_pool(struct wl_client *client, struct wl_resource *resource, seals = fcntl(fd, F_GET_SEALS); if (seals == -1) seals = 0; - pool->sigbus_is_impossible = (seals & F_SEAL_SHRINK) ? true : false; + + if ((seals & F_SEAL_SHRINK) && fstat(fd, &statbuf) >= 0) + pool->sigbus_is_impossible = statbuf.st_size >= size; + else + pool->sigbus_is_impossible = false; #else pool->sigbus_is_impossible = false; #endif |