termux-packages/x11-packages/qt6-qtbase/src-corelib-ipc-qsharedmemory_posix.cpp.patch.beforehostbuild

--- a/src/corelib/ipc/qsharedmemory_posix.cpp
+++ b/src/corelib/ipc/qsharedmemory_posix.cpp
@@ -24,6 +24,69 @@
 #  define O_CLOEXEC 0
 #endif
 
+#ifdef __ANDROID__
+#include <alloca.h>
+#include <errno.h>
+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;
+}
+#endif
+
 QT_BEGIN_NAMESPACE
 
 using namespace Qt::StringLiterals;