[PATCH v2 2/4] linux-user: Add support for FITRIM ioctl

[Aleksandar Markovic]

From: Aleksandar Markovic <address@hidden>

FITRIM ioctl accepts a pointer to the structure

struct fstrim_range {
    __u64 start;
    __u64 len;
    __u64 minlen;
};

as its third argument.

All ioctls in this group (FI* ioctl) are guarded with "#ifdef", so the
guards are used in this implementation too for consistency (however,
many of ioctls in FI* group became old enough that their #ifdef guards
could be removed, bit this is out of the scope of this patch).

Signed-off-by: Aleksandar Markovic <address@hidden>
---
 linux-user/ioctls.h        | 3 +++
 linux-user/syscall_defs.h  | 1 +
 linux-user/syscall_types.h | 5 +++++
 3 files changed, 9 insertions(+)

diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index 9fb9d6f..944fbeb 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -152,6 +152,9 @@
 #ifdef FIBMAP
      IOCTL(FIBMAP, IOC_W | IOC_R, MK_PTR(TYPE_LONG))
 #endif
+#ifdef FITRIM
+     IOCTL(FITRIM, IOC_W | IOC_R, MK_PTR(MK_STRUCT(STRUCT_fstrim_range)))
+#endif
 #ifdef FICLONE
      IOCTL(FICLONE, IOC_W, TYPE_INT)
      IOCTL(FICLONERANGE, IOC_W, MK_PTR(MK_STRUCT(STRUCT_file_clone_range)))
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index ed5068f..8761841 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -950,6 +950,7 @@ struct target_rtc_pll_info {
 #define TARGET_FIBMAP     TARGET_IO(0x00,1)  /* bmap access */
 #define TARGET_FIGETBSZ   TARGET_IO(0x00,2)  /* get the block size used for 
bmap */
 
+#define TARGET_FITRIM     TARGET_IOWR('X', 121, struct fstrim_range)
 #define TARGET_FICLONE    TARGET_IOW(0x94, 9, int)
 #define TARGET_FICLONERANGE TARGET_IOW(0x94, 13, struct file_clone_range)
 
diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h
index 5ba4155..dfd7608 100644
--- a/linux-user/syscall_types.h
+++ b/linux-user/syscall_types.h
@@ -226,6 +226,11 @@ STRUCT(dm_target_versions,
 STRUCT(dm_target_msg,
        TYPE_ULONGLONG) /* sector */
 
+STRUCT(fstrim_range,
+       TYPE_LONGLONG, /* start */
+       TYPE_LONGLONG, /* len */
+       TYPE_LONGLONG) /* minlen */
+
 STRUCT(file_clone_range,
        TYPE_LONGLONG, /* src_fd */
        TYPE_ULONGLONG, /* src_offset */
-- 
2.7.4