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hw/9pfs: Add st_gen support in getattr reply

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This patch use file system specific ioctl for getting i_generation
value. Not all file system support the ioctl. So we add an export
specific extended operation and assign right callback for the
file system that support i_generation ioctl

["M. Mohan Kumar" <mohan@in.ibm.com> we can do ioctl only for
regular files and directories on the server]

Signed-off-by: Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
This commit is contained in:
Harsh Prateek Bora 2011-10-12 19:11:25 +05:30 • committed by Aneesh Kumar K.V
parent 9844081bca
commit e06a765efb
7 changed files with 116 additions and 1 deletions
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8
fsdev/file-op-9p.h
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@ -49,6 +49,13 @@ typedef struct FsCred
} FsCred;
struct xattr_operations;
struct FsContext;
struct V9fsPath;
typedef struct extended_ops {
int (*get_st_gen)(struct FsContext *, struct V9fsPath *,
mode_t, uint64_t *);
} extended_ops;
/* FsContext flag values */
#define PATHNAME_FSCONTEXT 0x1
@ -64,6 +71,7 @@ typedef struct FsContext
uid_t uid;
int export_flags;
struct xattr_operations **xops;
struct extended_ops exops;
/* fs driver specific data */
void *private;
} FsContext;