-/* -*- 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.
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see [sun.com URL with a
- * copy of GPLv2].
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* 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, Whamcloud, Inc.
*/
/*
* 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 <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);
+DEFINE_SPINLOCK(obd_updatemax_lock);
/* 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);
- /*
- CDEBUG(D_INFO,
- "= push %p->%p = cur fs %p pwd %p:d%d:i%d (%.*s), pwdmnt %p:%d\n",
- save, current, current->fs, current->fs->pwd,
- atomic_read(¤t->fs->pwd->d_count),
- atomic_read(¤t->fs->pwd->d_inode->i_count),
- current->fs->pwd->d_name.len, current->fs->pwd->d_name.name,
- current->fs->pwdmnt,
- atomic_read(¤t->fs->pwdmnt->mnt_count));
- */
-
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 ?:
current->fs->umask = 0; /* umask already applied on client */
set_fs(new_ctx->fs);
ll_set_fs_pwd(current->fs, new_ctx->pwdmnt, new_ctx->pwd);
-
- /*
- CDEBUG(D_INFO,
- "= push %p->%p = cur fs %p pwd %p:d%d:i%d (%.*s), pwdmnt %p:%d\n",
- new_ctx, current, current->fs, current->fs->pwd,
- atomic_read(¤t->fs->pwd->d_count),
- atomic_read(¤t->fs->pwd->d_inode->i_count),
- current->fs->pwd->d_name.len, current->fs->pwd->d_name.name,
- current->fs->pwdmnt,
- atomic_read(¤t->fs->pwdmnt->mnt_count));
- */
}
EXPORT_SYMBOL(push_ctxt);
void pop_ctxt(struct lvfs_run_ctxt *saved, struct lvfs_run_ctxt *new_ctx,
struct lvfs_ucred *uc)
{
- //printk("pc0");
+ /* if there is underlaying dt_device then pop_ctxt is not needed */
+ if (new_ctx->dt != NULL)
+ return;
+
ASSERT_CTXT_MAGIC(saved->magic);
- //printk("pc1");
ASSERT_KERNEL_CTXT("popping non-kernel context!\n");
- /*
- CDEBUG(D_INFO,
- " = pop %p==%p = cur %p pwd %p:d%d:i%d (%.*s), pwdmnt %p:%d\n",
- new_ctx, current, current->fs, current->fs->pwd,
- atomic_read(¤t->fs->pwd->d_count),
- atomic_read(¤t->fs->pwd->d_inode->i_count),
- current->fs->pwd->d_name.len, current->fs->pwd->d_name.name,
- current->fs->pwdmnt,
- atomic_read(¤t->fs->pwdmnt->mnt_count));
- */
-
- 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 :
NULL);
}
-
- /*
- CDEBUG(D_INFO,
- "= pop %p->%p = cur fs %p pwd %p:d%d:i%d (%.*s), pwdmnt %p:%d\n",
- saved, current, current->fs, current->fs->pwd,
- atomic_read(¤t->fs->pwd->d_count),
- atomic_read(¤t->fs->pwd->d_inode->i_count),
- current->fs->pwd->d_name.len, current->fs->pwd->d_name.name,
- current->fs->pwdmnt,
- atomic_read(¤t->fs->pwdmnt->mnt_count));
- */
}
EXPORT_SYMBOL(pop_ctxt);
GOTO(out_up, dchild);
}
- err = ll_vfs_create(dir->d_inode, dchild, (mode & ~S_IFMT) | S_IFREG,
- NULL);
- if (err)
- GOTO(out_err, err);
+ err = vfs_create(dir->d_inode, dchild, (mode & ~S_IFMT) | S_IFREG,
+ NULL);
+ if (err)
+ GOTO(out_err, err);
RETURN(dchild);
/* utility to make a directory */
struct dentry *simple_mkdir(struct dentry *dir, struct vfsmount *mnt,
- char *name, int mode, int fix)
+ const char *name, int mode, int fix)
{
struct dentry *dchild;
int err = 0;
/* Fixup directory permissions if necessary */
if (fix && (old_mode & S_IALLUGO) != (mode & S_IALLUGO)) {
- CDEBUG(D_CONFIG,
+ CDEBUG(D_CONFIG,
"fixing permissions on %s from %o to %o\n",
name, old_mode, mode);
dchild->d_inode->i_mode = (mode & S_IALLUGO) |
EXPORT_SYMBOL(simple_mkdir);
/* utility to rename a file */
-int lustre_rename(struct dentry *dir, struct vfsmount *mnt,
+int lustre_rename(struct dentry *dir, struct vfsmount *mnt,
char *oldname, char *newname)
{
struct dentry *dchild_old, *dchild_new;
ENTRY;
ASSERT_KERNEL_CTXT("kernel doing rename outside kernel context\n");
- CDEBUG(D_INODE, "renaming file %.*s to %.*s\n",
+ CDEBUG(D_INODE, "renaming file %.*s to %.*s\n",
(int)strlen(oldname), oldname, (int)strlen(newname), newname);
dchild_old = ll_lookup_one_len(oldname, dir, strlen(oldname));
if (IS_ERR(dchild_old))
RETURN(PTR_ERR(dchild_old));
- if (!dchild_old->d_inode)
+ if (!dchild_old->d_inode)
GOTO(put_old, err = -ENOENT);
dchild_new = ll_lookup_one_len(newname, dir, strlen(newname));
if (IS_ERR(dchild_new))
GOTO(put_old, err = PTR_ERR(dchild_new));
- err = ll_vfs_rename(dir->d_inode, dchild_old, mnt,
+ err = ll_vfs_rename(dir->d_inode, dchild_old, mnt,
dir->d_inode, dchild_new, mnt);
dput(dchild_new);
if (!file || !file->f_op || !file->f_op->fsync)
RETURN(-ENOSYS);
- RETURN(file->f_op->fsync(file, file->f_dentry, 0));
+ RETURN(cfs_do_fsync(file, 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;
if (!dirent)
return -ENOMEM;
- list_add_tail(&dirent->lld_list, buf->lrc_list);
+ cfs_list_add_tail(&dirent->lld_list, buf->lrc_list);
buf->lrc_dirent = dirent;
dirent->lld_ino = ino;
return 0;
}
-long l_readdir(struct file *file, struct list_head *dentry_list)
+long l_readdir(struct file *file, cfs_list_t *dentry_list)
{
struct l_linux_dirent *lastdirent;
struct l_readdir_callback buf;
}
EXPORT_SYMBOL(l_readdir);
-#ifdef LUSTRE_KERNEL_VERSION
-#ifndef HAVE_CLEAR_RDONLY_ON_PUT
-#error rdonly patchset must be updated [cfs bz11248]
+int l_notify_change(struct vfsmount *mnt, struct dentry *dchild,
+ struct iattr *newattrs)
+{
+ int rc;
+
+ mutex_lock(&dchild->d_inode->i_mutex);
+#ifdef HAVE_SECURITY_PLUG
+ rc = notify_change(dchild, mnt, newattrs);
+#else
+ rc = notify_change(dchild, newattrs);
#endif
-void dev_set_rdonly(lvfs_sbdev_type dev);
-int dev_check_rdonly(lvfs_sbdev_type dev);
+ mutex_unlock(&dchild->d_inode->i_mutex);
+ 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);
+ }
-void __lvfs_set_rdonly(lvfs_sbdev_type dev, lvfs_sbdev_type jdev)
+ 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);
+
+int __lvfs_set_rdonly(lvfs_sbdev_type dev, lvfs_sbdev_type jdev)
{
- lvfs_sbdev_sync(dev);
+#ifdef HAVE_DEV_SET_RDONLY
if (jdev && (jdev != dev)) {
CDEBUG(D_IOCTL | D_HA, "set journal dev %lx rdonly\n",
(long)jdev);
}
CDEBUG(D_IOCTL | D_HA, "set dev %lx rdonly\n", (long)dev);
dev_set_rdonly(dev);
+
+ return 0;
+#else
+ CERROR("DEV %lx CANNOT BE SET READONLY\n", (long)dev);
+
+ return -EOPNOTSUPP;
+#endif
}
+EXPORT_SYMBOL(__lvfs_set_rdonly);
int lvfs_check_rdonly(lvfs_sbdev_type dev)
{
+#ifdef HAVE_DEV_SET_RDONLY
return dev_check_rdonly(dev);
+#else
+ return 0;
+#endif
}
-
-EXPORT_SYMBOL(__lvfs_set_rdonly);
EXPORT_SYMBOL(lvfs_check_rdonly);
int lvfs_check_io_health(struct obd_device *obd, struct file *file)
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 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);
+
}
+EXPORT_SYMBOL(obd_update_maxusage);
__u64 obd_memory_max(void)
{
- __u64 ret;
+ __u64 ret;
- spin_lock(&obd_updatemax_lock);
- ret = obd_max_alloc;
- spin_unlock(&obd_updatemax_lock);
+ spin_lock(&obd_updatemax_lock);
+ ret = obd_max_alloc;
+ spin_unlock(&obd_updatemax_lock);
- return ret;
+ return ret;
}
+EXPORT_SYMBOL(obd_memory_max);
__u64 obd_pages_max(void)
{
- __u64 ret;
+ __u64 ret;
- spin_lock(&obd_updatemax_lock);
- ret = obd_max_pages;
- spin_unlock(&obd_updatemax_lock);
+ spin_lock(&obd_updatemax_lock);
+ ret = obd_max_pages;
+ spin_unlock(&obd_updatemax_lock);
- return ret;
+ 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)
{
- __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;
- 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)
+ RETURN(0);
+
+ 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;
+ };
+
+ RETURN(ret);
}
EXPORT_SYMBOL(lprocfs_read_helper);
#endif /* LPROCFS */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff