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| author | Namjae Jeon <linkinjeon@gmail.com> | 2012-08-29 10:10:10 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2012-11-07 19:22:30 -0500 |
| commit | 216b6cbdcbd86b1db0754d58886b466ae31f5a63 (patch) | |
| tree | 409ef2bc2fcc5a8336453d29f8a5eac9dd45ec10 | |
| parent | 6f0c0580b70c89094b3422ba81118c7b959c7556 (diff) | |
| download | linux-216b6cbdcbd86b1db0754d58886b466ae31f5a63.tar.gz linux-216b6cbdcbd86b1db0754d58886b466ae31f5a63.tar.xz | |
exportfs: add FILEID_INVALID to indicate invalid fid_type
This commit adds FILEID_INVALID = 0xff in fid_type to
indicate invalid fid_type
It avoids using magic number 255
Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Vivek Trivedi <vtrivedi018@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| -rw-r--r-- | fs/exportfs/expfs.c | 4 | ||||
| -rw-r--r-- | fs/fhandle.c | 2 | ||||
| -rw-r--r-- | fs/nfsd/nfsfh.c | 4 | ||||
| -rw-r--r-- | include/linux/exportfs.h | 5 |
4 files changed, 10 insertions, 5 deletions
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c index 29ab099e3e08..f1f1c59c2966 100644 --- a/fs/exportfs/expfs.c +++ b/fs/exportfs/expfs.c @@ -322,10 +322,10 @@ static int export_encode_fh(struct inode *inode, struct fid *fid, if (parent && (len < 4)) { *max_len = 4; - return 255; + return FILEID_INVALID; } else if (len < 2) { *max_len = 2; - return 255; + return FILEID_INVALID; } len = 2; diff --git a/fs/fhandle.c b/fs/fhandle.c index f775bfdd6e4a..26f12b95702a 100644 --- a/fs/fhandle.c +++ b/fs/fhandle.c @@ -52,7 +52,7 @@ static long do_sys_name_to_handle(struct path *path, handle_bytes = handle_dwords * sizeof(u32); handle->handle_bytes = handle_bytes; if ((handle->handle_bytes > f_handle.handle_bytes) || - (retval == 255) || (retval == -ENOSPC)) { + (retval == FILEID_INVALID) || (retval == -ENOSPC)) { /* As per old exportfs_encode_fh documentation * we could return ENOSPC to indicate overflow * But file system returned 255 always. So handle diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c index 032af381b3aa..814afaa4458a 100644 --- a/fs/nfsd/nfsfh.c +++ b/fs/nfsd/nfsfh.c @@ -572,7 +572,7 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry, if (inode) _fh_update(fhp, exp, dentry); - if (fhp->fh_handle.fh_fileid_type == 255) { + if (fhp->fh_handle.fh_fileid_type == FILEID_INVALID) { fh_put(fhp); return nfserr_opnotsupp; } @@ -603,7 +603,7 @@ fh_update(struct svc_fh *fhp) goto out; _fh_update(fhp, fhp->fh_export, dentry); - if (fhp->fh_handle.fh_fileid_type == 255) + if (fhp->fh_handle.fh_fileid_type == FILEID_INVALID) return nfserr_opnotsupp; } out: diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h index 12291a7ee275..0e1452546300 100644 --- a/include/linux/exportfs.h +++ b/include/linux/exportfs.h @@ -83,6 +83,11 @@ enum fid_type { * 64 bit parent inode number. */ FILEID_NILFS_WITH_PARENT = 0x62, + + /* + * Filesystems must not use 0xff file ID. + */ + FILEID_INVALID = 0xff, }; struct fid { |