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Differential D23643 Diff 68171 graphics/wayland/files/patch-src_wayland-shm.c

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graphics/wayland/files/patch-src_wayland-shm.c

--- src/wayland-shm.c.orig 2018-04-09 17:19:26 UTC --- src/wayland-shm.c.orig 2020-02-11 23:46:03 UTC
+++ src/wayland-shm.c +++ src/wayland-shm.c
@@ -30,6 +30,8 @@ @@ -32,6 +32,8 @@
#define _GNU_SOURCE #include "config.h"
+#include "../config.h" +#include "../config.h"
+ +
#include <stdbool.h> #include <stdbool.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@@ -59,6 +61,9 @@ struct wl_shm_pool { @@ -64,6 +66,9 @@ struct wl_shm_pool {
char *data;
int32_t size; int32_t size;
int32_t new_size; int32_t new_size;
bool sigbus_is_impossible;
+#ifdef HAVE_SYS_UCRED_H +#ifdef HAVE_SYS_UCRED_H
+ int fd; + int fd;
+#endif +#endif
}; };
struct wl_shm_buffer { struct wl_shm_buffer {
@@ -76,15 +81,24 @@ struct wl_shm_sigbus_data { @@ -81,15 +86,24 @@ struct wl_shm_sigbus_data {
int fallback_mapping_used; int fallback_mapping_used;
}; };
+static void *mremap_compat_maymove(void *, size_t, size_t, int, int, int); +static void *mremap_compat_maymove(void *, size_t, size_t, int, int, int);
+ +
static void static void
shm_pool_finish_resize(struct wl_shm_pool *pool) shm_pool_finish_resize(struct wl_shm_pool *pool)
{ {
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+#endif +#endif
+ +
+ data = mremap_compat_maymove(pool->data, pool->size, pool->new_size, + data = mremap_compat_maymove(pool->data, pool->size, pool->new_size,
+ PROT_READ | PROT_WRITE, MAP_SHARED, fd); + PROT_READ | PROT_WRITE, MAP_SHARED, fd);
+ +
if (data == MAP_FAILED) { if (data == MAP_FAILED) {
wl_resource_post_error(pool->resource, wl_resource_post_error(pool->resource,
WL_SHM_ERROR_INVALID_FD, WL_SHM_ERROR_INVALID_FD,
@@ -110,6 +124,10 @@ shm_pool_unref(struct wl_shm_pool *pool, bool external @@ -115,6 +129,10 @@ shm_pool_unref(struct wl_shm_pool *pool, bool external
if (pool->internal_refcount + pool->external_refcount) if (pool->internal_refcount + pool->external_refcount)
return; return;
+#ifdef HAVE_SYS_UCRED_H +#ifdef HAVE_SYS_UCRED_H
+ close(pool->fd); + close(pool->fd);
+#endif +#endif
+ +
munmap(pool->data, pool->size); munmap(pool->data, pool->size);
free(pool); free(pool);
} }
@@ -223,6 +241,73 @@ shm_pool_destroy(struct wl_client *client, struct wl_r @@ -228,6 +246,73 @@ shm_pool_destroy(struct wl_client *client, struct wl_r
wl_resource_destroy(resource); wl_resource_destroy(resource);
} }
+#ifdef HAVE_MREMAP +#ifdef HAVE_MREMAP
+static void * +static void *
+mremap_compat_maymove(void *old_address, size_t old_size, size_t new_size, +mremap_compat_maymove(void *old_address, size_t old_size, size_t new_size,
+ int old_prot, int old_flags, int old_fd) + int old_prot, int old_flags, int old_fd)
+{ +{
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+ /* Unreachable. */ + /* Unreachable. */
+ return MAP_FAILED; + return MAP_FAILED;
+} +}
+#endif +#endif
+ +
static void static void
shm_pool_resize(struct wl_client *client, struct wl_resource *resource, shm_pool_resize(struct wl_client *client, struct wl_resource *resource,
int32_t size) int32_t size)
@@ -284,7 +369,14 @@ shm_create_pool(struct wl_client *client, struct wl_re @@ -300,7 +385,14 @@ shm_create_pool(struct wl_client *client, struct wl_re
"failed mmap fd %d: %m", fd); strerror(errno));
goto err_free; goto err_free;
} }
+ +
+#ifdef HAVE_SYS_UCRED_H +#ifdef HAVE_SYS_UCRED_H
+ /* We need to keep the FD around on FreeBSD so we can implement + /* We need to keep the FD around on FreeBSD so we can implement
+ * mremap(). See: mremap_compat_maymove(). */ + * mremap(). See: mremap_compat_maymove(). */
+ pool->fd = fd; + pool->fd = fd;
+#else +#else
close(fd); close(fd);
+#endif +#endif
pool->resource = pool->resource =
wl_resource_create(client, &wl_shm_pool_interface, 1, id); wl_resource_create(client, &wl_shm_pool_interface, 1, id);