termux-packages/x11-packages/webkit2gtk/SharedMemoryUnix.cpp.patch

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2021-02-22 18:04:20 +01:00
diff --git a/Source/WebKit/Platform/unix/SharedMemoryUnix.cpp b/Source/WebKit/Platform/unix/SharedMemoryUnix.cpp
index aff7b0d18d..7d22cb5f5c 100644
--- a/Source/WebKit/Platform/unix/SharedMemoryUnix.cpp
+++ b/Source/WebKit/Platform/unix/SharedMemoryUnix.cpp
@@ -54,6 +54,65 @@
#include "ArgumentCoders.h"
#endif
+static int shm_unlink(const char *name) {
+ size_t namelen;
+ char *fname;
+
+ /* Construct the filename. */
+ while (name[0] == '/') ++name;
+
+ if (name[0] == '\0') {
+ /* The name "/" is not supported. */
+ errno = EINVAL;
+ return -1;
+ }
+
+ namelen = strlen(name);
+ fname = (char *) alloca(sizeof("@TERMUX_PREFIX@/tmp/") - 1 + namelen + 1);
+ memcpy(fname, "@TERMUX_PREFIX@/tmp/", sizeof("@TERMUX_PREFIX@/tmp/") - 1);
+ memcpy(fname + sizeof("@TERMUX_PREFIX@/tmp/") - 1, name, namelen + 1);
+
+ return unlink(fname);
+}
+
+static int shm_open(const char *name, int oflag, mode_t mode) {
+ size_t namelen;
+ char *fname;
+ int fd;
+
+ /* Construct the filename. */
+ while (name[0] == '/') ++name;
+
+ if (name[0] == '\0') {
+ /* The name "/" is not supported. */
+ errno = EINVAL;
+ return -1;
+ }
+
+ namelen = strlen(name);
+ fname = (char *) alloca(sizeof("@TERMUX_PREFIX@/tmp/") - 1 + namelen + 1);
+ memcpy(fname, "@TERMUX_PREFIX@/tmp/", sizeof("@TERMUX_PREFIX@/tmp/") - 1);
+ memcpy(fname + sizeof("@TERMUX_PREFIX@/tmp/") - 1, name, namelen + 1);
+
+ fd = open(fname, oflag, mode);
+ if (fd != -1) {
+ /* We got a descriptor. Now set the FD_CLOEXEC bit. */
+ int flags = fcntl(fd, F_GETFD, 0);
+ flags |= FD_CLOEXEC;
+ flags = fcntl(fd, F_SETFD, flags);
+
+ if (flags == -1) {
+ /* Something went wrong. We cannot return the descriptor. */
+ int save_errno = errno;
+ close(fd);
+ fd = -1;
+ errno = save_errno;
+ }
+ }
+
+ return fd;
+}
+
namespace WebKit {
SharedMemory::Handle::Handle()