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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2010-03-05 14:43:43 -0600
committerEric Van Hensbergen <ericvh@gmail.com>2010-03-05 15:04:42 -0600
commit5717144a01d701614cfdb15f09ed562d720cf3db (patch)
treead9e54c39587483b0f680d3dbf4f8dd606f1f9c0 /fs
parentc5a7697da9775f7a0e122fa23180becc311772d1 (diff)
downloadop-kernel-dev-5717144a01d701614cfdb15f09ed562d720cf3db.zip
op-kernel-dev-5717144a01d701614cfdb15f09ed562d720cf3db.tar.gz
fs/9p: Add hardlink support to .u extension
For regular file and directories we put the link count in th extension field in a tagged string format. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/9p/vfs_inode.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index d3d3c3c..5fe45d6 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -887,6 +887,8 @@ v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode,
struct super_block *sb)
{
char ext[32];
+ char tag_name[14];
+ unsigned int i_nlink;
struct v9fs_session_info *v9ses = sb->s_fs_info;
inode->i_nlink = 1;
@@ -902,7 +904,22 @@ v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode,
inode->i_uid = stat->n_uid;
inode->i_gid = stat->n_gid;
}
-
+ if ((S_ISREG(inode->i_mode)) || (S_ISDIR(inode->i_mode))) {
+ if (v9fs_proto_dotu(v9ses) && (stat->extension[0] != '\0')) {
+ /*
+ * Hadlink support got added later to
+ * to the .u extension. So there can be
+ * server out there that doesn't support
+ * this even with .u extension. So check
+ * for non NULL stat->extension
+ */
+ strncpy(ext, stat->extension, sizeof(ext));
+ /* HARDLINKCOUNT %u */
+ sscanf(ext, "%13s %u", tag_name, &i_nlink);
+ if (!strncmp(tag_name, "HARDLINKCOUNT", 13))
+ inode->i_nlink = i_nlink;
+ }
+ }
inode->i_mode = p9mode2unixmode(v9ses, stat->mode);
if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) {
char type = 0;
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