qemu-common: remove lockf() implementation because it is not needed on Android 7 or higher

x11-packages/qemu-common/0001-implement-lockf.patch

@@ -1,95 +0,0 @@
-diff -uNr qemu-3.1.0/lockf_implementation.h qemu-3.1.0.mod/lockf_implementation.h
---- qemu-3.1.0/lockf_implementation.h	1970-01-01 03:00:00.000000000 +0300
-+++ qemu-3.1.0.mod/lockf_implementation.h	2019-02-14 00:17:12.137667319 +0200
-@@ -0,0 +1,56 @@
-+#ifndef LOCKF_IMPLEMENTATION_H
-+#define LOCKF_IMPLEMENTATION_H
-+
-+//
-+// lockf() implementation from GNU Libc
-+//
-+
-+static int lockf (int fd, int cmd, off_t len)
-+{
-+  struct flock fl;
-+
-+  memset ((char *) &fl, '\0', sizeof (fl));
-+
-+  /* lockf is always relative to the current file position.  */
-+  fl.l_whence = SEEK_CUR;
-+  fl.l_start = 0;
-+  fl.l_len = len;
-+
-+  switch (cmd)
-+    {
-+    case F_TEST:
-+      /* Test the lock: return 0 if FD is unlocked or locked by this process;
-+     return -1, set errno to EACCES, if another process holds the lock.  */
-+      fl.l_type = F_RDLCK;
-+      if (fcntl (fd, F_GETLK, &fl) < 0)
-+    return -1;
-+      if (fl.l_type == F_UNLCK || fl.l_pid == getpid ())
-+    return 0;
-+      errno = EACCES;
-+      return -1;
-+
-+    case F_ULOCK:
-+      fl.l_type = F_UNLCK;
-+      cmd = F_SETLK;
-+      break;
-+    case F_LOCK:
-+      fl.l_type = F_WRLCK;
-+      cmd = F_SETLKW;
-+      break;
-+    case F_TLOCK:
-+      fl.l_type = F_WRLCK;
-+      cmd = F_SETLK;
-+      break;
-+
-+    default:
-+      errno = EINVAL;
-+      return -1;
-+    }
-+
-+  /* lockf() is a cancellation point but so is fcntl() if F_SETLKW is
-+     used.  Therefore we don't have to care about cancellation here,
-+     the fcntl() function will take care of it.  */
-+  return fcntl (fd, cmd, &fl);
-+}
-+
-+#endif
-diff -uNr qemu-3.1.0/os-posix.c qemu-3.1.0.mod/os-posix.c
---- qemu-3.1.0/os-posix.c	2018-12-11 19:44:34.000000000 +0200
-+++ qemu-3.1.0.mod/os-posix.c	2019-02-14 00:17:05.354295183 +0200
-@@ -36,6 +36,7 @@
- #include "qemu/error-report.h"
- #include "qemu/log.h"
- #include "qemu/cutils.h"
-+#include "lockf_implementation.h"
- 
- #ifdef CONFIG_LINUX
- #include <sys/prctl.h>
-diff -uNr qemu-3.1.0/qga/main.c qemu-3.1.0.mod/qga/main.c
---- qemu-3.1.0/qga/main.c	2018-12-11 19:44:34.000000000 +0200
-+++ qemu-3.1.0.mod/qga/main.c	2019-02-14 00:17:18.731038388 +0200
-@@ -45,6 +45,8 @@
- #endif
- #endif
- 
-+#include "lockf_implementation.h"
-+
- #ifndef _WIN32
- #define QGA_VIRTIO_PATH_DEFAULT "/dev/virtio-ports/org.qemu.guest_agent.0"
- #define QGA_STATE_RELATIVE_DIR  "run"
-diff -uNr qemu-3.1.0/scsi/qemu-pr-helper.c qemu-3.1.0.mod/scsi/qemu-pr-helper.c
---- qemu-3.1.0/scsi/qemu-pr-helper.c	2018-12-11 19:44:34.000000000 +0200
-+++ qemu-3.1.0.mod/scsi/qemu-pr-helper.c	2019-02-14 00:17:24.634405524 +0200
-@@ -24,6 +24,8 @@
- #include <linux/dm-ioctl.h>
- #include <scsi/sg.h>
- 
-+#include "lockf_implementation.h"
-+
- #ifdef CONFIG_LIBCAP
- #include <cap-ng.h>
- #endif