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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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9
hw/9pfs/virtio-9p.c
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@ -1402,6 +1402,15 @@ static void v9fs_getattr(void *opaque)
goto out;
}
stat_to_v9stat_dotl(s, &stbuf, &v9stat_dotl);
/* fill st_gen if requested and supported by underlying fs */
if (request_mask & P9_STATS_GEN) {
retval = v9fs_co_st_gen(pdu, &fidp->path, stbuf.st_mode, &v9stat_dotl);
if (retval < 0) {
goto out;
}
v9stat_dotl.st_result_mask |= P9_STATS_GEN;
}
retval = offset;
retval += pdu_marshal(pdu, offset, "A", &v9stat_dotl);
out: