-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Andreas Dilger <adilger@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
#define DEBUG_SUBSYSTEM S_FILTER
#include <linux/version.h>
#include <linux/init.h>
#include <linux/lustre_compat25.h>
#include <lvfs.h>
-#include "lvfs_internal.h"
#include <obd.h>
#include <lustre_lib.h>
-#include <lustre_quota.h>
-__u64 obd_max_pages = 0;
-__u64 obd_max_alloc = 0;
struct lprocfs_stats *obd_memory = NULL;
-spinlock_t obd_updatemax_lock = SPIN_LOCK_UNLOCKED;
+EXPORT_SYMBOL(obd_memory);
/* refine later and change to seqlock or simlar from libcfs */
/* Debugging check only needed during development */
save->ngroups = current_ngroups;
current_ngroups = 0;
} else {
+ struct cred *cred;
task_lock(current);
- save->group_info = current->group_info;
- current->group_info = ginfo;
+ save->group_info = current_cred()->group_info;
+ if ((cred = prepare_creds())) {
+ cred->group_info = ginfo;
+ commit_creds(cred);
+ }
task_unlock(current);
}
}
if (!ginfo) {
current_ngroups = save->ngroups;
} else {
+ struct cred *cred;
task_lock(current);
- current->group_info = save->group_info;
+ if ((cred = prepare_creds())) {
+ cred->group_info = save->group_info;
+ commit_creds(cred);
+ }
task_unlock(current);
}
}
void push_ctxt(struct lvfs_run_ctxt *save, struct lvfs_run_ctxt *new_ctx,
struct lvfs_ucred *uc)
{
+ /* if there is underlaying dt_device then push_ctxt is not needed */
+ if (new_ctx->dt != NULL)
+ return;
+
//ASSERT_NOT_KERNEL_CTXT("already in kernel context!\n");
ASSERT_CTXT_MAGIC(new_ctx->magic);
OBD_SET_CTXT_MAGIC(save);
save->fs = get_fs();
- LASSERT(atomic_read(¤t->fs->pwd->d_count));
- LASSERT(atomic_read(&new_ctx->pwd->d_count));
- save->pwd = dget(current->fs->pwd);
- save->pwdmnt = mntget(current->fs->pwdmnt);
- save->luc.luc_umask = current->fs->umask;
- save->ngroups = current->group_info->ngroups;
+ LASSERT(d_refcount(cfs_fs_pwd(current->fs)));
+ LASSERT(d_refcount(new_ctx->pwd));
+ save->pwd = dget(cfs_fs_pwd(current->fs));
+ save->pwdmnt = mntget(cfs_fs_mnt(current->fs));
+ save->luc.luc_umask = cfs_curproc_umask();
+ save->ngroups = current_cred()->group_info->ngroups;
LASSERT(save->pwd);
LASSERT(save->pwdmnt);
LASSERT(new_ctx->pwdmnt);
if (uc) {
- save->luc.luc_uid = current->uid;
- save->luc.luc_gid = current->gid;
- save->luc.luc_fsuid = current->fsuid;
- save->luc.luc_fsgid = current->fsgid;
- save->luc.luc_cap = current->cap_effective;
-
- current->uid = uc->luc_uid;
- current->gid = uc->luc_gid;
- current->fsuid = uc->luc_fsuid;
- current->fsgid = uc->luc_fsgid;
- current->cap_effective = uc->luc_cap;
+ struct cred *cred;
+ save->luc.luc_uid = current_uid();
+ save->luc.luc_gid = current_gid();
+ save->luc.luc_fsuid = current_fsuid();
+ save->luc.luc_fsgid = current_fsgid();
+ save->luc.luc_cap = current_cap();
+
+ if ((cred = prepare_creds())) {
+ cred->uid = uc->luc_uid;
+ cred->gid = uc->luc_gid;
+ cred->fsuid = uc->luc_fsuid;
+ cred->fsgid = uc->luc_fsgid;
+ cred->cap_effective = uc->luc_cap;
+ commit_creds(cred);
+ }
push_group_info(save,
uc->luc_ginfo ?:
void pop_ctxt(struct lvfs_run_ctxt *saved, struct lvfs_run_ctxt *new_ctx,
struct lvfs_ucred *uc)
{
+ /* if there is underlaying dt_device then pop_ctxt is not needed */
+ if (new_ctx->dt != NULL)
+ return;
+
ASSERT_CTXT_MAGIC(saved->magic);
ASSERT_KERNEL_CTXT("popping non-kernel context!\n");
- LASSERTF(current->fs->pwd == new_ctx->pwd, "%p != %p\n",
- current->fs->pwd, new_ctx->pwd);
- LASSERTF(current->fs->pwdmnt == new_ctx->pwdmnt, "%p != %p\n",
- current->fs->pwdmnt, new_ctx->pwdmnt);
+ LASSERTF(cfs_fs_pwd(current->fs) == new_ctx->pwd, "%p != %p\n",
+ cfs_fs_pwd(current->fs), new_ctx->pwd);
+ LASSERTF(cfs_fs_mnt(current->fs) == new_ctx->pwdmnt, "%p != %p\n",
+ cfs_fs_mnt(current->fs), new_ctx->pwdmnt);
set_fs(saved->fs);
ll_set_fs_pwd(current->fs, saved->pwdmnt, saved->pwd);
mntput(saved->pwdmnt);
current->fs->umask = saved->luc.luc_umask;
if (uc) {
- current->uid = saved->luc.luc_uid;
- current->gid = saved->luc.luc_gid;
- current->fsuid = saved->luc.luc_fsuid;
- current->fsgid = saved->luc.luc_fsgid;
- current->cap_effective = saved->luc.luc_cap;
+ struct cred *cred;
+ if ((cred = prepare_creds())) {
+ cred->uid = saved->luc.luc_uid;
+ cred->gid = saved->luc.luc_gid;
+ cred->fsuid = saved->luc.luc_fsuid;
+ cred->fsgid = saved->luc.luc_fsgid;
+ cred->cap_effective = saved->luc.luc_cap;
+ commit_creds(cred);
+ }
+
pop_group_info(saved,
uc->luc_ginfo ?:
uc->luc_identity ? uc->luc_identity->mi_ginfo :
}
EXPORT_SYMBOL(pop_ctxt);
-/* utility to make a file */
-struct dentry *simple_mknod(struct dentry *dir, char *name, int mode, int fix)
-{
- struct dentry *dchild;
- int err = 0;
- ENTRY;
-
- // ASSERT_KERNEL_CTXT("kernel doing mknod outside kernel context\n");
- CDEBUG(D_INODE, "creating file %.*s\n", (int)strlen(name), name);
-
- dchild = ll_lookup_one_len(name, dir, strlen(name));
- if (IS_ERR(dchild))
- GOTO(out_up, dchild);
-
- if (dchild->d_inode) {
- int old_mode = dchild->d_inode->i_mode;
- if (!S_ISREG(old_mode))
- GOTO(out_err, err = -EEXIST);
-
- /* Fixup file permissions if necessary */
- if (fix && (old_mode & S_IALLUGO) != (mode & S_IALLUGO)) {
- CWARN("fixing permissions on %s from %o to %o\n",
- name, old_mode, mode);
- dchild->d_inode->i_mode = (mode & S_IALLUGO) |
- (old_mode & ~S_IALLUGO);
- mark_inode_dirty(dchild->d_inode);
- }
- GOTO(out_up, dchild);
- }
-
- err = ll_vfs_create(dir->d_inode, dchild, (mode & ~S_IFMT) | S_IFREG,
- NULL);
- if (err)
- GOTO(out_err, err);
-
- RETURN(dchild);
-
-out_err:
- dput(dchild);
- dchild = ERR_PTR(err);
-out_up:
- return dchild;
-}
-EXPORT_SYMBOL(simple_mknod);
-
-/* utility to make a directory */
-struct dentry *simple_mkdir(struct dentry *dir, struct vfsmount *mnt,
- const char *name, int mode, int fix)
-{
- struct dentry *dchild;
- int err = 0;
- ENTRY;
-
- // ASSERT_KERNEL_CTXT("kernel doing mkdir outside kernel context\n");
- CDEBUG(D_INODE, "creating directory %.*s\n", (int)strlen(name), name);
- dchild = ll_lookup_one_len(name, dir, strlen(name));
- if (IS_ERR(dchild))
- GOTO(out_up, dchild);
-
- if (dchild->d_inode) {
- int old_mode = dchild->d_inode->i_mode;
- if (!S_ISDIR(old_mode)) {
- CERROR("found %s (%lu/%u) is mode %o\n", name,
- dchild->d_inode->i_ino,
- dchild->d_inode->i_generation, old_mode);
- GOTO(out_err, err = -ENOTDIR);
- }
-
- /* Fixup directory permissions if necessary */
- if (fix && (old_mode & S_IALLUGO) != (mode & S_IALLUGO)) {
- CDEBUG(D_CONFIG,
- "fixing permissions on %s from %o to %o\n",
- name, old_mode, mode);
- dchild->d_inode->i_mode = (mode & S_IALLUGO) |
- (old_mode & ~S_IALLUGO);
- mark_inode_dirty(dchild->d_inode);
- }
- GOTO(out_up, dchild);
- }
-
- err = ll_vfs_mkdir(dir->d_inode, dchild, mnt, mode);
- if (err)
- GOTO(out_err, err);
-
- RETURN(dchild);
-
-out_err:
- dput(dchild);
- dchild = ERR_PTR(err);
-out_up:
- return dchild;
-}
-EXPORT_SYMBOL(simple_mkdir);
-
/* utility to rename a file */
int lustre_rename(struct dentry *dir, struct vfsmount *mnt,
char *oldname, char *newname)
}
EXPORT_SYMBOL(lustre_rename);
-/*
- * Read a file from within kernel context. Prior to calling this
- * function we should already have done a push_ctxt().
- */
-int lustre_fread(struct file *file, void *buf, int len, loff_t *off)
-{
- ASSERT_KERNEL_CTXT("kernel doing read outside kernel context\n");
- if (!file || !file->f_op || !file->f_op->read || !off)
- RETURN(-ENOSYS);
-
- return file->f_op->read(file, buf, len, off);
-}
-EXPORT_SYMBOL(lustre_fread);
-
-/*
- * Write a file from within kernel context. Prior to calling this
- * function we should already have done a push_ctxt().
- */
-int lustre_fwrite(struct file *file, const void *buf, int len, loff_t *off)
-{
- ENTRY;
- ASSERT_KERNEL_CTXT("kernel doing write outside kernel context\n");
- if (!file)
- RETURN(-ENOENT);
- if (!file->f_op)
- RETURN(-ENOSYS);
- if (!off)
- RETURN(-EINVAL);
-
- if (!file->f_op->write)
- RETURN(-EROFS);
-
- RETURN(file->f_op->write(file, buf, len, off));
-}
-EXPORT_SYMBOL(lustre_fwrite);
-
-/*
- * Sync a file from within kernel context. Prior to calling this
- * function we should already have done a push_ctxt().
- */
-int lustre_fsync(struct file *file)
-{
- ENTRY;
- ASSERT_KERNEL_CTXT("kernel doing sync outside kernel context\n");
- if (!file || !file->f_op || !file->f_op->fsync)
- RETURN(-ENOSYS);
-
- RETURN(file->f_op->fsync(file, file->f_dentry, 0));
-}
-EXPORT_SYMBOL(lustre_fsync);
-
/* Note: dput(dchild) will be called if there is an error */
struct l_file *l_dentry_open(struct lvfs_run_ctxt *ctxt, struct l_dentry *de,
int flags)
{
mntget(ctxt->pwdmnt);
- return dentry_open(de, ctxt->pwdmnt, flags);
+ return ll_dentry_open(de, ctxt->pwdmnt, flags, current_cred());
}
EXPORT_SYMBOL(l_dentry_open);
-#ifdef HAVE_VFS_READDIR_U64_INO
-static int l_filldir(void *__buf, const char *name, int namlen, loff_t offset,
- u64 ino, unsigned int d_type)
-#else
-static int l_filldir(void *__buf, const char *name, int namlen, loff_t offset,
- ino_t ino, unsigned int d_type)
-#endif
-{
- struct l_linux_dirent *dirent;
- struct l_readdir_callback *buf = (struct l_readdir_callback *)__buf;
-
- dirent = buf->lrc_dirent;
- if (dirent)
- dirent->lld_off = offset;
-
- OBD_ALLOC(dirent, sizeof(*dirent));
-
- if (!dirent)
- return -ENOMEM;
-
- list_add_tail(&dirent->lld_list, buf->lrc_list);
-
- buf->lrc_dirent = dirent;
- dirent->lld_ino = ino;
- LASSERT(sizeof(dirent->lld_name) >= namlen + 1);
- memcpy(dirent->lld_name, name, namlen);
-
- return 0;
-}
-
-long l_readdir(struct file *file, struct list_head *dentry_list)
-{
- struct l_linux_dirent *lastdirent;
- struct l_readdir_callback buf;
- int error;
-
- buf.lrc_dirent = NULL;
- buf.lrc_list = dentry_list;
-
- error = vfs_readdir(file, l_filldir, &buf);
- if (error < 0)
- return error;
-
- lastdirent = buf.lrc_dirent;
- if (lastdirent)
- lastdirent->lld_off = file->f_pos;
-
- return 0;
-}
-EXPORT_SYMBOL(l_readdir);
-
-int l_notify_change(struct vfsmount *mnt, struct dentry *dchild,
- struct iattr *newattrs)
-{
- int rc;
-
- LOCK_INODE_MUTEX(dchild->d_inode);
-#ifdef HAVE_SECURITY_PLUG
- rc = notify_change(dchild, mnt, newattrs);
-#else
- rc = notify_change(dchild, newattrs);
-#endif
- UNLOCK_INODE_MUTEX(dchild->d_inode);
- return rc;
-}
-EXPORT_SYMBOL(l_notify_change);
-
-/* utility to truncate a file */
-int simple_truncate(struct dentry *dir, struct vfsmount *mnt,
- char *name, loff_t length)
-{
- struct dentry *dchild;
- struct iattr newattrs;
- int err = 0;
- ENTRY;
-
- CDEBUG(D_INODE, "truncating file %.*s to %lld\n", (int)strlen(name),
- name, (long long)length);
- dchild = ll_lookup_one_len(name, dir, strlen(name));
- if (IS_ERR(dchild))
- GOTO(out, err = PTR_ERR(dchild));
-
- if (dchild->d_inode) {
- int old_mode = dchild->d_inode->i_mode;
- if (S_ISDIR(old_mode)) {
- CERROR("found %s (%lu/%u) is mode %o\n", name,
- dchild->d_inode->i_ino,
- dchild->d_inode->i_generation, old_mode);
- GOTO(out_dput, err = -EISDIR);
- }
-
- newattrs.ia_size = length;
- newattrs.ia_valid = ATTR_SIZE;
- err = l_notify_change(mnt, dchild, &newattrs);
- }
- EXIT;
-out_dput:
- dput(dchild);
-out:
- return err;
-}
-EXPORT_SYMBOL(simple_truncate);
-
-#ifdef LUSTRE_KERNEL_VERSION
-#ifndef HAVE_CLEAR_RDONLY_ON_PUT
-#error rdonly patchset must be updated [cfs bz11248]
-#endif
-void dev_set_rdonly(lvfs_sbdev_type dev);
-int dev_check_rdonly(lvfs_sbdev_type dev);
-
-void __lvfs_set_rdonly(lvfs_sbdev_type dev, lvfs_sbdev_type jdev)
-{
- if (jdev && (jdev != dev)) {
- CDEBUG(D_IOCTL | D_HA, "set journal dev %lx rdonly\n",
- (long)jdev);
- dev_set_rdonly(jdev);
- }
- CDEBUG(D_IOCTL | D_HA, "set dev %lx rdonly\n", (long)dev);
- dev_set_rdonly(dev);
-}
-
-int lvfs_check_rdonly(lvfs_sbdev_type dev)
-{
- return dev_check_rdonly(dev);
-}
-
-EXPORT_SYMBOL(__lvfs_set_rdonly);
-EXPORT_SYMBOL(lvfs_check_rdonly);
-
-int lvfs_check_io_health(struct obd_device *obd, struct file *file)
-{
- char *write_page = NULL;
- loff_t offset = 0;
- int rc = 0;
- ENTRY;
-
- OBD_ALLOC(write_page, CFS_PAGE_SIZE);
- if (!write_page)
- RETURN(-ENOMEM);
-
- rc = fsfilt_write_record(obd, file, write_page, CFS_PAGE_SIZE, &offset, 1);
-
- OBD_FREE(write_page, CFS_PAGE_SIZE);
-
- CDEBUG(D_INFO, "write 1 page synchronously for checking io rc %d\n",rc);
- RETURN(rc);
-}
-EXPORT_SYMBOL(lvfs_check_io_health);
-#endif /* LUSTRE_KERNEL_VERSION */
-
-void obd_update_maxusage()
-{
- __u64 max1, max2;
-
- max1 = obd_pages_sum();
- max2 = obd_memory_sum();
-
- spin_lock(&obd_updatemax_lock);
- if (max1 > obd_max_pages)
- obd_max_pages = max1;
- if (max2 > obd_max_alloc)
- obd_max_alloc = max2;
- spin_unlock(&obd_updatemax_lock);
-
-}
-
-__u64 obd_memory_max(void)
-{
- __u64 ret;
-
- spin_lock(&obd_updatemax_lock);
- ret = obd_max_alloc;
- spin_unlock(&obd_updatemax_lock);
-
- return ret;
-}
-
-__u64 obd_pages_max(void)
-{
- __u64 ret;
-
- spin_lock(&obd_updatemax_lock);
- ret = obd_max_pages;
- spin_unlock(&obd_updatemax_lock);
-
- return ret;
-}
-
-EXPORT_SYMBOL(obd_update_maxusage);
-EXPORT_SYMBOL(obd_pages_max);
-EXPORT_SYMBOL(obd_memory_max);
-EXPORT_SYMBOL(obd_memory);
-
#ifdef LPROCFS
__s64 lprocfs_read_helper(struct lprocfs_counter *lc,
- enum lprocfs_fields_flags field)
+ struct lprocfs_counter_header *header,
+ enum lprocfs_stats_flags flags,
+ enum lprocfs_fields_flags field)
{
- __s64 ret = 0;
- int centry;
-
- if (!lc)
- RETURN(0);
- do {
- centry = atomic_read(&lc->lc_cntl.la_entry);
-
- switch (field) {
- case LPROCFS_FIELDS_FLAGS_CONFIG:
- ret = lc->lc_config;
- break;
- case LPROCFS_FIELDS_FLAGS_SUM:
- ret = lc->lc_sum + lc->lc_sum_irq;
- break;
- case LPROCFS_FIELDS_FLAGS_MIN:
- ret = lc->lc_min;
- break;
- case LPROCFS_FIELDS_FLAGS_MAX:
- ret = lc->lc_max;
- break;
- case LPROCFS_FIELDS_FLAGS_AVG:
- ret = (lc->lc_max - lc->lc_min)/2;
- break;
- case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
- ret = lc->lc_sumsquare;
- break;
- case LPROCFS_FIELDS_FLAGS_COUNT:
- ret = lc->lc_count;
- break;
- default:
- break;
- };
- } while (centry != atomic_read(&lc->lc_cntl.la_entry) &&
- centry != atomic_read(&lc->lc_cntl.la_exit));
-
- RETURN(ret);
+ __s64 ret = 0;
+
+ if (lc == NULL || header == NULL)
+ RETURN(0);
+
+ switch (field) {
+ case LPROCFS_FIELDS_FLAGS_CONFIG:
+ ret = header->lc_config;
+ break;
+ case LPROCFS_FIELDS_FLAGS_SUM:
+ ret = lc->lc_sum;
+ if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
+ ret += lc->lc_sum_irq;
+ break;
+ case LPROCFS_FIELDS_FLAGS_MIN:
+ ret = lc->lc_min;
+ break;
+ case LPROCFS_FIELDS_FLAGS_MAX:
+ ret = lc->lc_max;
+ break;
+ case LPROCFS_FIELDS_FLAGS_AVG:
+ ret = (lc->lc_max - lc->lc_min) / 2;
+ break;
+ case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
+ ret = lc->lc_sumsquare;
+ break;
+ case LPROCFS_FIELDS_FLAGS_COUNT:
+ ret = lc->lc_count;
+ break;
+ default:
+ break;
+ };
+
+ RETURN(ret);
}
EXPORT_SYMBOL(lprocfs_read_helper);
#endif /* LPROCFS */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff