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-rw-r--r--fs/coda/cache.c9
-rw-r--r--fs/coda/cnode.c3
-rw-r--r--fs/coda/coda_cache.h22
-rw-r--r--fs/coda/coda_fs_i.h58
-rw-r--r--fs/coda/coda_linux.c3
-rw-r--r--fs/coda/coda_linux.h101
-rw-r--r--fs/coda/dir.c27
-rw-r--r--fs/coda/file.c3
-rw-r--r--fs/coda/inode.c17
-rw-r--r--fs/coda/pioctl.c10
-rw-r--r--fs/coda/psdev.c4
-rw-r--r--fs/coda/symlink.c4
-rw-r--r--fs/coda/upcall.c5
13 files changed, 228 insertions, 38 deletions
diff --git a/fs/coda/cache.c b/fs/coda/cache.c
index 9060f08e70c..69015787618 100644
--- a/fs/coda/cache.c
+++ b/fs/coda/cache.c
@@ -20,10 +20,9 @@
#include <linux/spinlock.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
#include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
-#include <linux/coda_cache.h>
+#include "coda_linux.h"
+#include "coda_cache.h"
static atomic_t permission_epoch = ATOMIC_INIT(0);
@@ -93,7 +92,7 @@ static void coda_flag_children(struct dentry *parent, int flag)
struct list_head *child;
struct dentry *de;
- spin_lock(&dcache_lock);
+ spin_lock(&parent->d_lock);
list_for_each(child, &parent->d_subdirs)
{
de = list_entry(child, struct dentry, d_u.d_child);
@@ -102,7 +101,7 @@ static void coda_flag_children(struct dentry *parent, int flag)
continue;
coda_flag_inode(de->d_inode, flag);
}
- spin_unlock(&dcache_lock);
+ spin_unlock(&parent->d_lock);
return;
}
diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c
index 602240569c8..6475877b076 100644
--- a/fs/coda/cnode.c
+++ b/fs/coda/cnode.c
@@ -7,9 +7,8 @@
#include <linux/time.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
-#include <linux/coda_fs_i.h>
#include <linux/coda_psdev.h>
+#include "coda_linux.h"
static inline int coda_fideq(struct CodaFid *fid1, struct CodaFid *fid2)
{
diff --git a/fs/coda/coda_cache.h b/fs/coda/coda_cache.h
new file mode 100644
index 00000000000..c910b5eb1ce
--- /dev/null
+++ b/fs/coda/coda_cache.h
@@ -0,0 +1,22 @@
+/* Coda filesystem -- Linux Minicache
+ *
+ * Copyright (C) 1989 - 1997 Carnegie Mellon University
+ *
+ * Carnegie Mellon University encourages users of this software to
+ * contribute improvements to the Coda project. Contact Peter Braam
+ * <coda@cs.cmu.edu>
+ */
+
+#ifndef _CFSNC_HEADER_
+#define _CFSNC_HEADER_
+
+/* credential cache */
+void coda_cache_enter(struct inode *inode, int mask);
+void coda_cache_clear_inode(struct inode *);
+void coda_cache_clear_all(struct super_block *sb);
+int coda_cache_check(struct inode *inode, int mask);
+
+/* for downcalls and attributes and lookups */
+void coda_flag_inode_children(struct inode *inode, int flag);
+
+#endif /* _CFSNC_HEADER_ */
diff --git a/fs/coda/coda_fs_i.h b/fs/coda/coda_fs_i.h
new file mode 100644
index 00000000000..e35071b1de0
--- /dev/null
+++ b/fs/coda/coda_fs_i.h
@@ -0,0 +1,58 @@
+/*
+ * coda_fs_i.h
+ *
+ * Copyright (C) 1998 Carnegie Mellon University
+ *
+ */
+
+#ifndef _LINUX_CODA_FS_I
+#define _LINUX_CODA_FS_I
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/coda.h>
+
+/*
+ * coda fs inode data
+ * c_lock protects accesses to c_flags, c_mapcount, c_cached_epoch, c_uid and
+ * c_cached_perm.
+ * vfs_inode is set only when the inode is created and never changes.
+ * c_fid is set when the inode is created and should be considered immutable.
+ */
+struct coda_inode_info {
+ struct CodaFid c_fid; /* Coda identifier */
+ u_short c_flags; /* flags (see below) */
+ unsigned int c_mapcount; /* nr of times this inode is mapped */
+ unsigned int c_cached_epoch; /* epoch for cached permissions */
+ vuid_t c_uid; /* fsuid for cached permissions */
+ unsigned int c_cached_perm; /* cached access permissions */
+ spinlock_t c_lock;
+ struct inode vfs_inode;
+};
+
+/*
+ * coda fs file private data
+ */
+#define CODA_MAGIC 0xC0DAC0DA
+struct coda_file_info {
+ int cfi_magic; /* magic number */
+ struct file *cfi_container; /* container file for this cnode */
+ unsigned int cfi_mapcount; /* nr of times this file is mapped */
+};
+
+#define CODA_FTOC(file) ((struct coda_file_info *)((file)->private_data))
+
+/* flags */
+#define C_VATTR 0x1 /* Validity of vattr in inode */
+#define C_FLUSH 0x2 /* used after a flush */
+#define C_DYING 0x4 /* from venus (which died) */
+#define C_PURGE 0x8
+
+int coda_cnode_make(struct inode **, struct CodaFid *, struct super_block *);
+struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr);
+int coda_cnode_makectl(struct inode **inode, struct super_block *sb);
+struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb);
+void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *);
+
+#endif
diff --git a/fs/coda/coda_linux.c b/fs/coda/coda_linux.c
index bf4a3fd3c8e..2bdbcc11b37 100644
--- a/fs/coda/coda_linux.c
+++ b/fs/coda/coda_linux.c
@@ -17,9 +17,8 @@
#include <linux/string.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
#include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
+#include "coda_linux.h"
/* initialize the debugging variables */
int coda_fake_statfs;
diff --git a/fs/coda/coda_linux.h b/fs/coda/coda_linux.h
new file mode 100644
index 00000000000..9b0c5323890
--- /dev/null
+++ b/fs/coda/coda_linux.h
@@ -0,0 +1,101 @@
+/*
+ * Coda File System, Linux Kernel module
+ *
+ * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University
+ * Linux modifications (C) 1996, Peter J. Braam
+ * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University
+ *
+ * Carnegie Mellon University encourages users of this software to
+ * contribute improvements to the Coda project.
+ */
+
+#ifndef _LINUX_CODA_FS
+#define _LINUX_CODA_FS
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include "coda_fs_i.h"
+
+/* operations */
+extern const struct inode_operations coda_dir_inode_operations;
+extern const struct inode_operations coda_file_inode_operations;
+extern const struct inode_operations coda_ioctl_inode_operations;
+
+extern const struct dentry_operations coda_dentry_operations;
+
+extern const struct address_space_operations coda_file_aops;
+extern const struct address_space_operations coda_symlink_aops;
+
+extern const struct file_operations coda_dir_operations;
+extern const struct file_operations coda_file_operations;
+extern const struct file_operations coda_ioctl_operations;
+
+/* operations shared over more than one file */
+int coda_open(struct inode *i, struct file *f);
+int coda_release(struct inode *i, struct file *f);
+int coda_permission(struct inode *inode, int mask, unsigned int flags);
+int coda_revalidate_inode(struct dentry *);
+int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *);
+int coda_setattr(struct dentry *, struct iattr *);
+
+/* this file: heloers */
+char *coda_f2s(struct CodaFid *f);
+int coda_isroot(struct inode *i);
+int coda_iscontrol(const char *name, size_t length);
+
+void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
+void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
+unsigned short coda_flags_to_cflags(unsigned short);
+
+/* sysctl.h */
+void coda_sysctl_init(void);
+void coda_sysctl_clean(void);
+
+#define CODA_ALLOC(ptr, cast, size) do { \
+ if (size < PAGE_SIZE) \
+ ptr = kmalloc((unsigned long) size, GFP_KERNEL); \
+ else \
+ ptr = (cast)vmalloc((unsigned long) size); \
+ if (!ptr) \
+ printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
+ else memset( ptr, 0, size ); \
+} while (0)
+
+
+#define CODA_FREE(ptr,size) \
+ do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0)
+
+/* inode to cnode access functions */
+
+static inline struct coda_inode_info *ITOC(struct inode *inode)
+{
+ return list_entry(inode, struct coda_inode_info, vfs_inode);
+}
+
+static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
+{
+ return &(ITOC(inode)->c_fid);
+}
+
+static __inline__ char *coda_i2s(struct inode *inode)
+{
+ return coda_f2s(&(ITOC(inode)->c_fid));
+}
+
+/* this will not zap the inode away */
+static __inline__ void coda_flag_inode(struct inode *inode, int flag)
+{
+ struct coda_inode_info *cii = ITOC(inode);
+
+ spin_lock(&cii->c_lock);
+ cii->c_flags |= flag;
+ spin_unlock(&cii->c_lock);
+}
+
+#endif
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 5d8b3553960..2b8dae4d121 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -18,14 +18,14 @@
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/spinlock.h>
+#include <linux/namei.h>
#include <asm/uaccess.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
#include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
-#include <linux/coda_cache.h>
+#include "coda_linux.h"
+#include "coda_cache.h"
#include "coda_int.h"
@@ -47,7 +47,7 @@ static int coda_readdir(struct file *file, void *buf, filldir_t filldir);
/* dentry ops */
static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd);
-static int coda_dentry_delete(struct dentry *);
+static int coda_dentry_delete(const struct dentry *);
/* support routines */
static int coda_venus_readdir(struct file *coda_file, void *buf,
@@ -60,7 +60,7 @@ static int coda_return_EIO(void)
}
#define CODA_EIO_ERROR ((void *) (coda_return_EIO))
-static const struct dentry_operations coda_dentry_operations =
+const struct dentry_operations coda_dentry_operations =
{
.d_revalidate = coda_dentry_revalidate,
.d_delete = coda_dentry_delete,
@@ -125,8 +125,6 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, struc
return ERR_PTR(error);
exit:
- entry->d_op = &coda_dentry_operations;
-
if (inode && (type & CODA_NOCACHE))
coda_flag_inode(inode, C_VATTR | C_PURGE);
@@ -134,10 +132,13 @@ exit:
}
-int coda_permission(struct inode *inode, int mask)
+int coda_permission(struct inode *inode, int mask, unsigned int flags)
{
int error;
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
+
mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
if (!mask)
@@ -541,9 +542,13 @@ out:
/* called when a cache lookup succeeds */
static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd)
{
- struct inode *inode = de->d_inode;
+ struct inode *inode;
struct coda_inode_info *cii;
+ if (nd->flags & LOOKUP_RCU)
+ return -ECHILD;
+
+ inode = de->d_inode;
if (!inode || coda_isroot(inode))
goto out;
if (is_bad_inode(inode))
@@ -559,7 +564,7 @@ static int coda_dentry_revalidate(struct dentry *de, struct nameidata *nd)
if (cii->c_flags & C_FLUSH)
coda_flag_inode_children(inode, C_FLUSH);
- if (atomic_read(&de->d_count) > 1)
+ if (de->d_count > 1)
/* pretend it's valid, but don't change the flags */
goto out;
@@ -577,7 +582,7 @@ out:
* This is the callback from dput() when d_count is going to 0.
* We use this to unhash dentries with bad inodes.
*/
-static int coda_dentry_delete(struct dentry * dentry)
+static int coda_dentry_delete(const struct dentry * dentry)
{
int flags;
diff --git a/fs/coda/file.c b/fs/coda/file.c
index c8b50ba4366..0433057be33 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -21,10 +21,9 @@
#include <asm/uaccess.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
-#include <linux/coda_fs_i.h>
#include <linux/coda_psdev.h>
+#include "coda_linux.h"
#include "coda_int.h"
static ssize_t
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index 5ea57c8c7f9..871b2771546 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -28,10 +28,9 @@
#include <linux/vmalloc.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
#include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
-#include <linux/coda_cache.h>
+#include "coda_linux.h"
+#include "coda_cache.h"
#include "coda_int.h"
@@ -45,7 +44,7 @@ static struct kmem_cache * coda_inode_cachep;
static struct inode *coda_alloc_inode(struct super_block *sb)
{
struct coda_inode_info *ei;
- ei = (struct coda_inode_info *)kmem_cache_alloc(coda_inode_cachep, GFP_KERNEL);
+ ei = kmem_cache_alloc(coda_inode_cachep, GFP_KERNEL);
if (!ei)
return NULL;
memset(&ei->c_fid, 0, sizeof(struct CodaFid));
@@ -56,11 +55,18 @@ static struct inode *coda_alloc_inode(struct super_block *sb)
return &ei->vfs_inode;
}
-static void coda_destroy_inode(struct inode *inode)
+static void coda_i_callback(struct rcu_head *head)
{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+ INIT_LIST_HEAD(&inode->i_dentry);
kmem_cache_free(coda_inode_cachep, ITOC(inode));
}
+static void coda_destroy_inode(struct inode *inode)
+{
+ call_rcu(&inode->i_rcu, coda_i_callback);
+}
+
static void init_once(void *foo)
{
struct coda_inode_info *ei = (struct coda_inode_info *) foo;
@@ -186,6 +192,7 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
sb->s_blocksize_bits = 12;
sb->s_magic = CODA_SUPER_MAGIC;
sb->s_op = &coda_super_operations;
+ sb->s_d_op = &coda_dentry_operations;
sb->s_bdi = &vc->bdi;
/* get root fid from Venus: this needs the root inode */
diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c
index 2fd89b5c5c7..6cbb3afb36d 100644
--- a/fs/coda/pioctl.c
+++ b/fs/coda/pioctl.c
@@ -19,12 +19,12 @@
#include <asm/uaccess.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
-#include <linux/coda_fs_i.h>
#include <linux/coda_psdev.h>
+#include "coda_linux.h"
+
/* pioctl ops */
-static int coda_ioctl_permission(struct inode *inode, int mask);
+static int coda_ioctl_permission(struct inode *inode, int mask, unsigned int flags);
static long coda_pioctl(struct file *filp, unsigned int cmd,
unsigned long user_data);
@@ -41,8 +41,10 @@ const struct file_operations coda_ioctl_operations = {
};
/* the coda pioctl inode ops */
-static int coda_ioctl_permission(struct inode *inode, int mask)
+static int coda_ioctl_permission(struct inode *inode, int mask, unsigned int flags)
{
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
return (mask & MAY_EXEC) ? -EACCES : 0;
}
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index 62647a8595e..8f616e0e252 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -43,10 +43,10 @@
#include <asm/uaccess.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
-#include <linux/coda_fs_i.h>
#include <linux/coda_psdev.h>
+#include "coda_linux.h"
+
#include "coda_int.h"
/* statistics */
diff --git a/fs/coda/symlink.c b/fs/coda/symlink.c
index af78f007a2b..ab94ef63cae 100644
--- a/fs/coda/symlink.c
+++ b/fs/coda/symlink.c
@@ -16,9 +16,9 @@
#include <linux/pagemap.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
#include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
+
+#include "coda_linux.h"
static int coda_symlink_filler(struct file *file, struct page *page)
{
diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c
index c3563cab975..9727e0c5257 100644
--- a/fs/coda/upcall.c
+++ b/fs/coda/upcall.c
@@ -33,10 +33,9 @@
#include <linux/vfs.h>
#include <linux/coda.h>
-#include <linux/coda_linux.h>
#include <linux/coda_psdev.h>
-#include <linux/coda_fs_i.h>
-#include <linux/coda_cache.h>
+#include "coda_linux.h"
+#include "coda_cache.h"
#include "coda_int.h"
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-02 11:41:54 +0000