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linux-sg2042
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[PATCH] switch nfsd to kern_path() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2008-08-02 01:03:36 -04:00
parent c1a2a4756d
commit a63bb99660
4 changed files with 56 additions and 58 deletions
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48
fs/nfsd/export.c
View File

@ -162,20 +162,18 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
cache_put(&ek->h, &svc_expkey_cache); cache_put(&ek->h, &svc_expkey_cache);
else err = -ENOMEM; else err = -ENOMEM;
} else { } else {
struct nameidata nd; err = kern_path(buf, 0, &key.ek_path);
err = path_lookup(buf, 0, &nd);
if (err) if (err)
goto out; goto out;
dprintk("Found the path %s\n", buf); dprintk("Found the path %s\n", buf);
key.ek_path = nd.path;
ek = svc_expkey_update(&key, ek); ek = svc_expkey_update(&key, ek);
if (ek) if (ek)
cache_put(&ek->h, &svc_expkey_cache); cache_put(&ek->h, &svc_expkey_cache);
else else
err = -ENOMEM; err = -ENOMEM;
path_put(&nd.path); path_put(&key.ek_path);
} }
cache_flush(); cache_flush();
out: out:
@ -991,7 +989,7 @@ exp_export(struct nfsctl_export *nxp)
struct svc_export *exp = NULL; struct svc_export *exp = NULL;
struct svc_export new; struct svc_export new;
struct svc_expkey *fsid_key = NULL; struct svc_expkey *fsid_key = NULL;
struct nameidata nd; struct path path;
int err; int err;
/* Consistency check */ /* Consistency check */
@ -1014,12 +1012,12 @@ exp_export(struct nfsctl_export *nxp)
/* Look up the dentry */ /* Look up the dentry */
err = path_lookup(nxp->ex_path, 0, &nd); err = kern_path(nxp->ex_path, 0, &path);
if (err) if (err)
goto out_put_clp; goto out_put_clp;
err = -EINVAL; err = -EINVAL;
exp = exp_get_by_name(clp, nd.path.mnt, nd.path.dentry, NULL); exp = exp_get_by_name(clp, path.mnt, path.dentry, NULL);
memset(&new, 0, sizeof(new)); memset(&new, 0, sizeof(new));
@ -1027,8 +1025,8 @@ exp_export(struct nfsctl_export *nxp)
if ((nxp->ex_flags & NFSEXP_FSID) && if ((nxp->ex_flags & NFSEXP_FSID) &&
(!IS_ERR(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev))) && (!IS_ERR(fsid_key = exp_get_fsid_key(clp, nxp->ex_dev))) &&
fsid_key->ek_path.mnt && fsid_key->ek_path.mnt &&
(fsid_key->ek_path.mnt != nd.path.mnt || (fsid_key->ek_path.mnt != path.mnt ||
fsid_key->ek_path.dentry != nd.path.dentry)) fsid_key->ek_path.dentry != path.dentry))
goto finish; goto finish;
if (!IS_ERR(exp)) { if (!IS_ERR(exp)) {
@ -1044,7 +1042,7 @@ exp_export(struct nfsctl_export *nxp)
goto finish; goto finish;
} }
err = check_export(nd.path.dentry->d_inode, nxp->ex_flags, NULL); err = check_export(path.dentry->d_inode, nxp->ex_flags, NULL);
if (err) goto finish; if (err) goto finish;
err = -ENOMEM; err = -ENOMEM;
@ -1057,7 +1055,7 @@ exp_export(struct nfsctl_export *nxp)
if (!new.ex_pathname) if (!new.ex_pathname)
goto finish; goto finish;
new.ex_client = clp; new.ex_client = clp;
new.ex_path = nd.path; new.ex_path = path;
new.ex_flags = nxp->ex_flags; new.ex_flags = nxp->ex_flags;
new.ex_anon_uid = nxp->ex_anon_uid; new.ex_anon_uid = nxp->ex_anon_uid;
new.ex_anon_gid = nxp->ex_anon_gid; new.ex_anon_gid = nxp->ex_anon_gid;
@ -1083,7 +1081,7 @@ finish:
exp_put(exp); exp_put(exp);
if (fsid_key && !IS_ERR(fsid_key)) if (fsid_key && !IS_ERR(fsid_key))
cache_put(&fsid_key->h, &svc_expkey_cache); cache_put(&fsid_key->h, &svc_expkey_cache);
path_put(&nd.path); path_put(&path);
out_put_clp: out_put_clp:
auth_domain_put(clp); auth_domain_put(clp);
out_unlock: out_unlock:
@ -1114,7 +1112,7 @@ exp_unexport(struct nfsctl_export *nxp)
{ {
struct auth_domain *dom; struct auth_domain *dom;
svc_export *exp; svc_export *exp;
struct nameidata nd; struct path path;
int err; int err;
/* Consistency check */ /* Consistency check */
@ -1131,13 +1129,13 @@ exp_unexport(struct nfsctl_export *nxp)
goto out_unlock; goto out_unlock;
} }
err = path_lookup(nxp->ex_path, 0, &nd); err = kern_path(nxp->ex_path, 0, &path);
if (err) if (err)
goto out_domain; goto out_domain;
err = -EINVAL; err = -EINVAL;
exp = exp_get_by_name(dom, nd.path.mnt, nd.path.dentry, NULL); exp = exp_get_by_name(dom, path.mnt, path.dentry, NULL);
path_put(&nd.path); path_put(&path);
if (IS_ERR(exp)) if (IS_ERR(exp))
goto out_domain; goto out_domain;
@ -1159,26 +1157,26 @@ out_unlock:
* since its harder to fool a kernel module than a user space program. * since its harder to fool a kernel module than a user space program.
*/ */
int int
exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize) exp_rootfh(svc_client *clp, char *name, struct knfsd_fh *f, int maxsize)
{ {
struct svc_export *exp; struct svc_export *exp;
struct nameidata nd; struct path path;
struct inode *inode; struct inode *inode;
struct svc_fh fh; struct svc_fh fh;
int err; int err;
err = -EPERM; err = -EPERM;
/* NB: we probably ought to check that it's NUL-terminated */ /* NB: we probably ought to check that it's NUL-terminated */
if (path_lookup(path, 0, &nd)) { if (kern_path(name, 0, &path)) {
printk("nfsd: exp_rootfh path not found %s", path); printk("nfsd: exp_rootfh path not found %s", name);
return err; return err;
} }
inode = nd.path.dentry->d_inode; inode = path.dentry->d_inode;
dprintk("nfsd: exp_rootfh(%s [%p] %s:%s/%ld)\n", dprintk("nfsd: exp_rootfh(%s [%p] %s:%s/%ld)\n",
path, nd.path.dentry, clp->name, name, path.dentry, clp->name,
inode->i_sb->s_id, inode->i_ino); inode->i_sb->s_id, inode->i_ino);
exp = exp_parent(clp, nd.path.mnt, nd.path.dentry, NULL); exp = exp_parent(clp, path.mnt, path.dentry, NULL);
if (IS_ERR(exp)) { if (IS_ERR(exp)) {
err = PTR_ERR(exp); err = PTR_ERR(exp);
goto out; goto out;
@ -1188,7 +1186,7 @@ exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
* fh must be initialized before calling fh_compose * fh must be initialized before calling fh_compose
*/ */
fh_init(&fh, maxsize); fh_init(&fh, maxsize);
if (fh_compose(&fh, exp, nd.path.dentry, NULL)) if (fh_compose(&fh, exp, path.dentry, NULL))
err = -EINVAL; err = -EINVAL;
else else
err = 0; err = 0;
@ -1196,7 +1194,7 @@ exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize)
fh_put(&fh); fh_put(&fh);
exp_put(exp); exp_put(exp);
out: out:
path_put(&nd.path); path_put(&path);
return err; return err;
} }

50
fs/nfsd/nfs4recover.c
View File

@ -51,7 +51,7 @@
#define NFSDDBG_FACILITY NFSDDBG_PROC #define NFSDDBG_FACILITY NFSDDBG_PROC
/* Globals */ /* Globals */
static struct nameidata rec_dir; static struct path rec_dir;
static int rec_dir_init = 0; static int rec_dir_init = 0;
static void static void
@ -121,9 +121,9 @@ out_no_tfm:
static void static void
nfsd4_sync_rec_dir(void) nfsd4_sync_rec_dir(void)
{ {
mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex); mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
nfsd_sync_dir(rec_dir.path.dentry); nfsd_sync_dir(rec_dir.dentry);
mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex); mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
} }
int int
@ -143,9 +143,9 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
nfs4_save_user(&uid, &gid); nfs4_save_user(&uid, &gid);
/* lock the parent */ /* lock the parent */
mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex); mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
dentry = lookup_one_len(dname, rec_dir.path.dentry, HEXDIR_LEN-1); dentry = lookup_one_len(dname, rec_dir.dentry, HEXDIR_LEN-1);
if (IS_ERR(dentry)) { if (IS_ERR(dentry)) {
status = PTR_ERR(dentry); status = PTR_ERR(dentry);
goto out_unlock; goto out_unlock;
@ -155,15 +155,15 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n"); dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n");
goto out_put; goto out_put;
} }
status = mnt_want_write(rec_dir.path.mnt); status = mnt_want_write(rec_dir.mnt);
if (status) if (status)
goto out_put; goto out_put;
status = vfs_mkdir(rec_dir.path.dentry->d_inode, dentry, S_IRWXU); status = vfs_mkdir(rec_dir.dentry->d_inode, dentry, S_IRWXU);
mnt_drop_write(rec_dir.path.mnt); mnt_drop_write(rec_dir.mnt);
out_put: out_put:
dput(dentry); dput(dentry);
out_unlock: out_unlock:
mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex); mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
if (status == 0) { if (status == 0) {
clp->cl_firststate = 1; clp->cl_firststate = 1;
nfsd4_sync_rec_dir(); nfsd4_sync_rec_dir();
@ -226,7 +226,7 @@ nfsd4_list_rec_dir(struct dentry *dir, recdir_func *f)
nfs4_save_user(&uid, &gid); nfs4_save_user(&uid, &gid);
filp = dentry_open(dget(dir), mntget(rec_dir.path.mnt), O_RDONLY); filp = dentry_open(dget(dir), mntget(rec_dir.mnt), O_RDONLY);
status = PTR_ERR(filp); status = PTR_ERR(filp);
if (IS_ERR(filp)) if (IS_ERR(filp))
goto out; goto out;
@ -291,9 +291,9 @@ nfsd4_unlink_clid_dir(char *name, int namlen)
dprintk("NFSD: nfsd4_unlink_clid_dir. name %.*s\n", namlen, name); dprintk("NFSD: nfsd4_unlink_clid_dir. name %.*s\n", namlen, name);
mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex); mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
dentry = lookup_one_len(name, rec_dir.path.dentry, namlen); dentry = lookup_one_len(name, rec_dir.dentry, namlen);
mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex); mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
if (IS_ERR(dentry)) { if (IS_ERR(dentry)) {
status = PTR_ERR(dentry); status = PTR_ERR(dentry);
return status; return status;
@ -302,7 +302,7 @@ nfsd4_unlink_clid_dir(char *name, int namlen)
if (!dentry->d_inode) if (!dentry->d_inode)
goto out; goto out;
status = nfsd4_clear_clid_dir(rec_dir.path.dentry, dentry); status = nfsd4_clear_clid_dir(rec_dir.dentry, dentry);
out: out:
dput(dentry); dput(dentry);
return status; return status;
@ -318,7 +318,7 @@ nfsd4_remove_clid_dir(struct nfs4_client *clp)
if (!rec_dir_init || !clp->cl_firststate) if (!rec_dir_init || !clp->cl_firststate)
return; return;
status = mnt_want_write(rec_dir.path.mnt); status = mnt_want_write(rec_dir.mnt);
if (status) if (status)
goto out; goto out;
clp->cl_firststate = 0; clp->cl_firststate = 0;
@ -327,7 +327,7 @@ nfsd4_remove_clid_dir(struct nfs4_client *clp)
nfs4_reset_user(uid, gid); nfs4_reset_user(uid, gid);
if (status == 0) if (status == 0)
nfsd4_sync_rec_dir(); nfsd4_sync_rec_dir();
mnt_drop_write(rec_dir.path.mnt); mnt_drop_write(rec_dir.mnt);
out: out:
if (status) if (status)
printk("NFSD: Failed to remove expired client state directory" printk("NFSD: Failed to remove expired client state directory"
@ -357,17 +357,17 @@ nfsd4_recdir_purge_old(void) {
if (!rec_dir_init) if (!rec_dir_init)
return; return;
status = mnt_want_write(rec_dir.path.mnt); status = mnt_want_write(rec_dir.mnt);
if (status) if (status)
goto out; goto out;
status = nfsd4_list_rec_dir(rec_dir.path.dentry, purge_old); status = nfsd4_list_rec_dir(rec_dir.dentry, purge_old);
if (status == 0) if (status == 0)
nfsd4_sync_rec_dir(); nfsd4_sync_rec_dir();
mnt_drop_write(rec_dir.path.mnt); mnt_drop_write(rec_dir.mnt);
out: out:
if (status) if (status)
printk("nfsd4: failed to purge old clients from recovery" printk("nfsd4: failed to purge old clients from recovery"
" directory %s\n", rec_dir.path.dentry->d_name.name); " directory %s\n", rec_dir.dentry->d_name.name);
} }
static int static int
@ -387,10 +387,10 @@ int
nfsd4_recdir_load(void) { nfsd4_recdir_load(void) {
int status; int status;
status = nfsd4_list_rec_dir(rec_dir.path.dentry, load_recdir); status = nfsd4_list_rec_dir(rec_dir.dentry, load_recdir);
if (status) if (status)
printk("nfsd4: failed loading clients from recovery" printk("nfsd4: failed loading clients from recovery"
" directory %s\n", rec_dir.path.dentry->d_name.name); " directory %s\n", rec_dir.dentry->d_name.name);
return status; return status;
} }
@ -412,7 +412,7 @@ nfsd4_init_recdir(char *rec_dirname)
nfs4_save_user(&uid, &gid); nfs4_save_user(&uid, &gid);
status = path_lookup(rec_dirname, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, status = kern_path(rec_dirname, LOOKUP_FOLLOW | LOOKUP_DIRECTORY,
&rec_dir); &rec_dir);
if (status) if (status)
printk("NFSD: unable to find recovery directory %s\n", printk("NFSD: unable to find recovery directory %s\n",
@ -429,5 +429,5 @@ nfsd4_shutdown_recdir(void)
if (!rec_dir_init) if (!rec_dir_init)
return; return;
rec_dir_init = 0; rec_dir_init = 0;
path_put(&rec_dir.path); path_put(&rec_dir);
} }

8
fs/nfsd/nfs4state.c
View File

@ -3284,17 +3284,17 @@ int
nfs4_reset_recoverydir(char *recdir) nfs4_reset_recoverydir(char *recdir)
{ {
int status; int status;
struct nameidata nd; struct path path;
status = path_lookup(recdir, LOOKUP_FOLLOW, &nd); status = kern_path(recdir, LOOKUP_FOLLOW, &path);
if (status) if (status)
return status; return status;
status = -ENOTDIR; status = -ENOTDIR;
if (S_ISDIR(nd.path.dentry->d_inode->i_mode)) { if (S_ISDIR(path.dentry->d_inode->i_mode)) {
nfs4_set_recdir(recdir); nfs4_set_recdir(recdir);
status = 0; status = 0;
} }
path_put(&nd.path); path_put(&path);
return status; return status;
} }

8
fs/nfsd/nfsctl.c
View File

@ -341,7 +341,7 @@ static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size)
static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size) static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size)
{ {
struct nameidata nd; struct path path;
char *fo_path; char *fo_path;
int error; int error;
@ -356,13 +356,13 @@ static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size)
if (qword_get(&buf, fo_path, size) < 0) if (qword_get(&buf, fo_path, size) < 0)
return -EINVAL; return -EINVAL;
error = path_lookup(fo_path, 0, &nd); error = kern_path(fo_path, 0, &path);
if (error) if (error)
return error; return error;
error = nlmsvc_unlock_all_by_sb(nd.path.mnt->mnt_sb); error = nlmsvc_unlock_all_by_sb(path.mnt->mnt_sb);
path_put(&nd.path); path_put(&path);
return error; return error;
} }