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author | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-16 13:26:11 +0300 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-16 23:47:55 +0300 |
commit | b514f872f86d4b0c13fed74a1fe1f7ab500c4fd0 (patch) | |
tree | a54821b3e2363150e4e9b180e097a8092f884dda /fs/nfs/nfs4namespace.c | |
parent | b1942c5f8cf3bea3a3c88a7498ae4c4361f31afe (diff) | |
download | linux-b514f872f86d4b0c13fed74a1fe1f7ab500c4fd0.tar.xz |
nfs: make nfs_path() work without vfsmount
part 3: now we have everything to get nfs_path() just by dentry -
just follow to (disconnected) root and pick the rest of the thing
there.
Start killing propagation of struct vfsmount * on the paths that
used to bring it to nfs_path().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfs/nfs4namespace.c')
-rw-r--r-- | fs/nfs/nfs4namespace.c | 43 |
1 files changed, 19 insertions, 24 deletions
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 3c2a1724fbd2..46942e2680a0 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -54,33 +54,29 @@ Elong: /* * Determine the mount path as a string */ -static char *nfs4_path(const struct vfsmount *mnt_parent, - const struct dentry *dentry, - char *buffer, ssize_t buflen) +static char *nfs4_path(struct dentry *dentry, char *buffer, ssize_t buflen) { - const char *srvpath; - - srvpath = strchr(mnt_parent->mnt_devname, ':'); - if (srvpath) - srvpath++; - else - srvpath = mnt_parent->mnt_devname; - - return nfs_path(srvpath, mnt_parent->mnt_root, dentry, buffer, buflen); + char *limit; + char *path = nfs_path(&limit, dentry, buffer, buflen); + if (!IS_ERR(path)) { + char *colon = strchr(path, ':'); + if (colon && colon < limit) + path = colon + 1; + } + return path; } /* * Check that fs_locations::fs_root [RFC3530 6.3] is a prefix for what we * believe to be the server path to this dentry */ -static int nfs4_validate_fspath(const struct vfsmount *mnt_parent, - const struct dentry *dentry, +static int nfs4_validate_fspath(struct dentry *dentry, const struct nfs4_fs_locations *locations, char *page, char *page2) { const char *path, *fs_path; - path = nfs4_path(mnt_parent, dentry, page, PAGE_SIZE); + path = nfs4_path(dentry, page, PAGE_SIZE); if (IS_ERR(path)) return PTR_ERR(path); @@ -165,20 +161,20 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata, /** * nfs_follow_referral - set up mountpoint when hitting a referral on moved error - * @mnt_parent - mountpoint of parent directory + * @sb - superblock of parent directory * @dentry - parent directory * @locations - array of NFSv4 server location information * */ -static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent, - const struct dentry *dentry, +static struct vfsmount *nfs_follow_referral(struct super_block *sb, + struct dentry *dentry, const struct nfs4_fs_locations *locations) { struct vfsmount *mnt = ERR_PTR(-ENOENT); struct nfs_clone_mount mountdata = { - .sb = mnt_parent->mnt_sb, + .sb = sb, .dentry = dentry, - .authflavor = NFS_SB(mnt_parent->mnt_sb)->client->cl_auth->au_flavor, + .authflavor = NFS_SB(sb)->client->cl_auth->au_flavor, }; char *page = NULL, *page2 = NULL; int loc, error; @@ -198,7 +194,7 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent, goto out; /* Ensure fs path is a prefix of current dentry path */ - error = nfs4_validate_fspath(mnt_parent, dentry, locations, page, page2); + error = nfs4_validate_fspath(dentry, locations, page, page2); if (error < 0) { mnt = ERR_PTR(error); goto out; @@ -225,11 +221,10 @@ out: /* * nfs_do_refmount - handle crossing a referral on server - * @mnt_parent - mountpoint of referral * @dentry - dentry of referral * */ -struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry) +struct vfsmount *nfs_do_refmount(struct super_block *sb, struct dentry *dentry) { struct vfsmount *mnt = ERR_PTR(-ENOMEM); struct dentry *parent; @@ -262,7 +257,7 @@ struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentr fs_locations->fs_path.ncomponents <= 0) goto out_free; - mnt = nfs_follow_referral(mnt_parent, dentry, fs_locations); + mnt = nfs_follow_referral(sb, dentry, fs_locations); out_free: __free_page(page); kfree(fs_locations); |