Linux compat 2.6.39: security_inode_init_security()

[zfs.git] / module / zfs / zpl_xattr.c

diff --git a/module/zfs/zpl_xattr.c b/module/zfs/zpl_xattr.c
index 86e52f7..f274407 100644 (file)
--- a/module/zfs/zpl_xattr.c
+++ b/module/zfs/zpl_xattr.c
@@ -110,11 +110,11 @@ zpl_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
        struct inode *ip = dentry->d_inode;
        struct inode *dxip = NULL;
        loff_t pos = 3;  /* skip '.', '..', and '.zfs' entries. */
-       cred_t *cr;
+       cred_t *cr = CRED();
        int error;
        xattr_filldir_t xf = { buffer_size, 0, buffer, ip };
 
-       cr = (cred_t *)get_current_cred();
+       crhold(cr);
 
        /* Lookup the xattr directory */
        error = -zfs_lookup(ip, NULL, &dxip, LOOKUP_XATTR, cr, NULL, NULL);
@@ -135,7 +135,7 @@ out:
        if (dxip)
                iput(dxip);
 
-       put_cred(cr);
+       crfree(cr);
 
        return (error);
 }
@@ -145,10 +145,10 @@ zpl_xattr_get(struct inode *ip, const char *name, void *buf, size_t size)
 {
        struct inode *dxip = NULL;
        struct inode *xip = NULL;
-       cred_t *cr;
+       cred_t *cr = CRED();
        int error;
 
-       cr = (cred_t *)get_current_cred();
+       crhold(cr);
 
        /* Lookup the xattr directory */
        error = -zfs_lookup(ip, NULL, &dxip, LOOKUP_XATTR, cr, NULL, NULL);
@@ -173,7 +173,7 @@ out:
        if (dxip)
                iput(dxip);
 
-       put_cred(cr);
+       crfree(cr);
 
        if (error == -ENOENT)
                error = -ENODATA;
@@ -188,11 +188,12 @@ zpl_xattr_set(struct inode *ip, const char *name, const void *value,
        struct inode *dxip = NULL;
        struct inode *xip = NULL;
        vattr_t *vap = NULL;
-       cred_t *cr;
+       cred_t *cr = CRED();
        ssize_t wrote;
        int error;
+       const int xattr_mode = S_IFREG | 0644;
 
-       cr = (cred_t *)get_current_cred();
+       crhold(cr);
 
        /* Lookup the xattr directory and create it if required. */
        error = -zfs_lookup(ip, NULL, &dxip, LOOKUP_XATTR | CREATE_XATTR_DIR,
@@ -230,10 +231,10 @@ zpl_xattr_set(struct inode *ip, const char *name, const void *value,
        /* Lookup failed create a new xattr. */
        if (xip == NULL) {
                vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
-               vap->va_mode = S_IFREG | 0644;
+               vap->va_mode = xattr_mode;
                vap->va_mask = ATTR_MODE;
-               vap->va_uid = current_fsuid();
-               vap->va_gid = current_fsgid();
+               vap->va_uid = crgetfsuid(cr);
+               vap->va_gid = crgetfsgid(cr);
 
                error = -zfs_create(dxip, (char *)name, vap, 0, 0644, &xip,
                    cr, 0, NULL);
@@ -242,6 +243,11 @@ zpl_xattr_set(struct inode *ip, const char *name, const void *value,
        }
 
        ASSERT(xip != NULL);
+
+       error = -zfs_freesp(ITOZ(xip), 0, 0, xattr_mode, TRUE);
+       if (error)
+               goto out;
+
        wrote = zpl_write_common(xip, value, size, 0, UIO_SYSSPACE, 0, cr);
        if (wrote < 0)
                error = wrote;
@@ -256,7 +262,7 @@ out:
        if (dxip)
                iput(dxip);
 
-       put_cred(cr);
+       crfree(cr);
        if (error == -ENOENT)
                error = -ENODATA;
 
@@ -266,7 +272,7 @@ out:
 }
 
 static int
-zpl_xattr_user_get(struct inode *ip, const char *name,
+__zpl_xattr_user_get(struct inode *ip, const char *name,
     void *buffer, size_t size)
 {
        char *xattr_name;
@@ -284,9 +290,10 @@ zpl_xattr_user_get(struct inode *ip, const char *name,
 
        return (error);
 }
+ZPL_XATTR_GET_WRAPPER(zpl_xattr_user_get);
 
 static int
-zpl_xattr_user_set(struct inode *ip, const char *name,
+__zpl_xattr_user_set(struct inode *ip, const char *name,
     const void *value, size_t size, int flags)
 {
        char *xattr_name;
@@ -304,6 +311,7 @@ zpl_xattr_user_set(struct inode *ip, const char *name,
 
        return (error);
 }
+ZPL_XATTR_SET_WRAPPER(zpl_xattr_user_set);
 
 xattr_handler_t zpl_xattr_user_handler = {
        .prefix = XATTR_USER_PREFIX,
@@ -312,7 +320,7 @@ xattr_handler_t zpl_xattr_user_handler = {
 };
 
 static int
-zpl_xattr_trusted_get(struct inode *ip, const char *name,
+__zpl_xattr_trusted_get(struct inode *ip, const char *name,
     void *buffer, size_t size)
 {
        char *xattr_name;
@@ -330,9 +338,10 @@ zpl_xattr_trusted_get(struct inode *ip, const char *name,
 
        return (error);
 }
+ZPL_XATTR_GET_WRAPPER(zpl_xattr_trusted_get);
 
 static int
-zpl_xattr_trusted_set(struct inode *ip, const char *name,
+__zpl_xattr_trusted_set(struct inode *ip, const char *name,
     const void *value, size_t size, int flags)
 {
        char *xattr_name;
@@ -350,6 +359,7 @@ zpl_xattr_trusted_set(struct inode *ip, const char *name,
 
        return (error);
 }
+ZPL_XATTR_SET_WRAPPER(zpl_xattr_trusted_set);
 
 xattr_handler_t zpl_xattr_trusted_handler = {
        .prefix = XATTR_TRUSTED_PREFIX,
@@ -358,7 +368,7 @@ xattr_handler_t zpl_xattr_trusted_handler = {
 };
 
 static int
-zpl_xattr_security_get(struct inode *ip, const char *name,
+__zpl_xattr_security_get(struct inode *ip, const char *name,
     void *buffer, size_t size)
 {
        char *xattr_name;
@@ -373,9 +383,10 @@ zpl_xattr_security_get(struct inode *ip, const char *name,
 
        return (error);
 }
+ZPL_XATTR_GET_WRAPPER(zpl_xattr_security_get);
 
 static int
-zpl_xattr_security_set(struct inode *ip, const char *name,
+__zpl_xattr_security_set(struct inode *ip, const char *name,
     const void *value, size_t size, int flags)
 {
        char *xattr_name;
@@ -390,16 +401,19 @@ zpl_xattr_security_set(struct inode *ip, const char *name,
 
        return (error);
 }
+ZPL_XATTR_SET_WRAPPER(zpl_xattr_security_set);
 
 int
-zpl_xattr_security_init(struct inode *ip, struct inode *dip)
+zpl_xattr_security_init(struct inode *ip, struct inode *dip,
+    const struct qstr *qstr)
 {
         int error;
         size_t len;
         void *value;
         char *name;
 
-        error = security_inode_init_security(ip, dip, &name, &value, &len);
+        error = zpl_security_inode_init_security(ip, dip, qstr,
+           &name, &value, &len);
         if (error) {
                 if (error == -EOPNOTSUPP)
                         return 0;
@@ -407,7 +421,7 @@ zpl_xattr_security_init(struct inode *ip, struct inode *dip)
                 return (error);
         }
 
-       error = zpl_xattr_security_set(ip, name, value, len, 0);
+       error = __zpl_xattr_security_set(ip, name, value, len, 0);
 
         kfree(name);
         kfree(value);