[v4,01/16] hw/9pfs: Add missing definitions for Windows

Commit Message

Bin Meng Jan. 30, 2023, 9:51 a.m. UTC

From: Guohuai Shi <[e-mail]>

Some definitions currently used by the 9pfs codes are only available
on POSIX platforms. Let's add our own ones in preparation to adding
9pfs support for Windows.

Signed-off-by: Guohuai Shi <[e-mail]>
Signed-off-by: Bin Meng <[e-mail]>
---

 fsdev/file-op-9p.h | 33 +++++++++++++++++++++++++++++++++
 hw/9pfs/9p.h       | 43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+)

Patch

diff --git a/fsdev/file-op-9p.h b/fsdev/file-op-9p.h
index 4997677460..7d9a736b66 100644
--- a/fsdev/file-op-9p.h
+++ b/fsdev/file-op-9p.h
@@ -27,6 +27,39 @@ 
 # include <sys/mount.h>
 #endif
 
+#ifdef CONFIG_WIN32
+
+/* POSIX structure not defined in Windows */
+
+typedef uint32_t uid_t;
+typedef uint32_t gid_t;
+
+/* from http://man7.org/linux/man-pages/man2/statfs.2.html */
+typedef uint32_t __fsword_t;
+typedef uint32_t fsblkcnt_t;
+typedef uint32_t fsfilcnt_t;
+
+/* from linux/include/uapi/asm-generic/posix_types.h */
+typedef struct {
+    long __val[2];
+} fsid_t;
+
+struct statfs {
+    __fsword_t f_type;
+    __fsword_t f_bsize;
+    fsblkcnt_t f_blocks;
+    fsblkcnt_t f_bfree;
+    fsblkcnt_t f_bavail;
+    fsfilcnt_t f_files;
+    fsfilcnt_t f_ffree;
+    fsid_t f_fsid;
+    __fsword_t f_namelen;
+    __fsword_t f_frsize;
+    __fsword_t f_flags;
+};
+
+#endif /* CONFIG_WIN32 */
+
 #define SM_LOCAL_MODE_BITS    0600
 #define SM_LOCAL_DIR_MODE_BITS    0700
 
diff --git a/hw/9pfs/9p.h b/hw/9pfs/9p.h
index 2fce4140d1..ada9f14ebc 100644
--- a/hw/9pfs/9p.h
+++ b/hw/9pfs/9p.h
@@ -3,13 +3,56 @@ 
 
 #include <dirent.h>
 #include <utime.h>
+#ifndef CONFIG_WIN32
 #include <sys/resource.h>
+#endif
 #include "fsdev/file-op-9p.h"
 #include "fsdev/9p-iov-marshal.h"
 #include "qemu/thread.h"
 #include "qemu/coroutine.h"
 #include "qemu/qht.h"
 
+#ifdef CONFIG_WIN32
+
+/* Windows does not provide such a macro, typically it is 255 */
+#define NAME_MAX            255
+
+/* macros required for build, values do not matter */
+#define AT_SYMLINK_NOFOLLOW 0x100   /* Do not follow symbolic links */
+#define AT_REMOVEDIR        0x200   /* Remove directory instead of file */
+#define O_DIRECTORY         02000000
+
+#define makedev(major, minor)   \
+        ((dev_t)((((major) & 0xfff) << 8) | ((minor) & 0xff)))
+#define major(dev)  ((unsigned int)(((dev) >> 8) & 0xfff))
+#define minor(dev)  ((unsigned int)(((dev) & 0xff)))
+
+/*
+ * Currenlty Windows/MinGW does not provide the following flag macros,
+ * so define them here for 9p codes.
+ *
+ * Once Windows/MinGW provides them, remove the defines to prevent conflicts.
+ */
+
+#ifndef S_IFLNK
+#define S_IFLNK         0xA000
+#define S_ISLNK(mode)   ((mode & S_IFMT) == S_IFLNK)
+#endif /* S_IFLNK */
+
+#ifndef S_ISUID
+#define S_ISUID         0x0800
+#endif
+
+#ifndef S_ISGID
+#define S_ISGID         0x0400
+#endif
+
+#ifndef S_ISVTX
+#define S_ISVTX         0x0200
+#endif
+
+#endif /* CONFIG_WIN32 */
+
 enum {
     P9_TLERROR = 6,
     P9_RLERROR,