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Diffstat (limited to 'kernel/dir.c')
-rw-r--r--kernel/dir.c121
1 files changed, 86 insertions, 35 deletions
diff --git a/kernel/dir.c b/kernel/dir.c
index b23def7..1dac0c8 100644
--- a/kernel/dir.c
+++ b/kernel/dir.c
@@ -10,9 +10,8 @@
#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/file.h>
#include <linux/slab.h>
+#include <linux/file.h>
static struct inode_operations fuse_dir_inode_operations;
static struct inode_operations fuse_file_inode_operations;
@@ -20,13 +19,12 @@ static struct inode_operations fuse_symlink_inode_operations;
static struct inode_operations fuse_special_inode_operations;
static struct file_operations fuse_dir_operations;
-static struct file_operations fuse_file_operations;
static struct dentry_operations fuse_dentry_opertations;
static void change_attributes(struct inode *inode, struct fuse_attr *attr)
{
- inode->i_mode = attr->mode;
+ inode->i_mode = (inode->i_mode & S_IFMT) + (attr->mode & 07777);
inode->i_nlink = attr->nlink;
inode->i_uid = attr->uid;
inode->i_gid = attr->gid;
@@ -38,29 +36,46 @@ static void change_attributes(struct inode *inode, struct fuse_attr *attr)
inode->i_ctime = attr->ctime;
}
-void fuse_init_inode(struct inode *inode, struct fuse_attr *attr)
+static void fuse_init_inode(struct inode *inode, int mode, int rdev)
{
- change_attributes(inode, attr);
-
+ inode->i_mode = mode & S_IFMT;
if(S_ISREG(inode->i_mode)) {
inode->i_op = &fuse_file_inode_operations;
- inode->i_fop = &fuse_file_operations;
+ fuse_init_file_inode(inode);
}
else if(S_ISDIR(inode->i_mode)) {
inode->i_op = &fuse_dir_inode_operations;
inode->i_fop = &fuse_dir_operations;
}
- else if(S_ISLNK(inode->i_mode))
+ else if(S_ISLNK(inode->i_mode)) {
inode->i_op = &fuse_symlink_inode_operations;
+ }
else {
inode->i_op = &fuse_special_inode_operations;
- init_special_inode(inode, inode->i_mode, attr->rdev);
+ init_special_inode(inode, inode->i_mode, rdev);
}
+ inode->u.generic_ip = inode;
+}
+
+struct inode *fuse_iget(struct super_block *sb, ino_t ino,
+ struct fuse_attr *attr)
+{
+ struct inode *inode;
+
+ inode = iget(sb, ino);
+ if(inode) {
+ if(!inode->u.generic_ip)
+ fuse_init_inode(inode, attr->mode, attr->rdev);
+
+ change_attributes(inode, attr);
+ }
+
+ return inode;
}
static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry)
{
- struct fuse_conn *fc = dir->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(dir);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
struct fuse_lookup_out arg;
@@ -76,11 +91,9 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry)
inode = NULL;
if(!out.h.error) {
- inode = iget(dir->i_sb, arg.ino);
+ inode = fuse_iget(dir->i_sb, arg.ino, &arg.attr);
if(!inode)
return ERR_PTR(-ENOMEM);
-
- fuse_init_inode(inode, &arg.attr);
}
else if(out.h.error != -ENOENT)
return ERR_PTR(out.h.error);
@@ -94,7 +107,7 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry)
static int fuse_mknod(struct inode *dir, struct dentry *entry, int mode,
int rdev)
{
- struct fuse_conn *fc = dir->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(dir);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
struct fuse_mknod_in *inarg;
@@ -123,11 +136,10 @@ static int fuse_mknod(struct inode *dir, struct dentry *entry, int mode,
if(out.h.error)
return out.h.error;
- inode = iget(dir->i_sb, outarg.ino);
+ inode = fuse_iget(dir->i_sb, outarg.ino, &outarg.attr);
if(!inode)
return -ENOMEM;
-
- fuse_init_inode(inode, &outarg.attr);
+
d_instantiate(entry, inode);
return 0;
@@ -141,7 +153,7 @@ static int fuse_create(struct inode *dir, struct dentry *entry, int mode)
static int fuse_mkdir(struct inode *dir, struct dentry *entry, int mode)
{
- struct fuse_conn *fc = dir->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(dir);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
struct fuse_mkdir_in *inarg;
@@ -168,7 +180,7 @@ static int fuse_mkdir(struct inode *dir, struct dentry *entry, int mode)
static int fuse_symlink(struct inode *dir, struct dentry *entry,
const char *link)
{
- struct fuse_conn *fc = dir->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(dir);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
char *inarg;
@@ -195,7 +207,7 @@ static int fuse_symlink(struct inode *dir, struct dentry *entry,
static int fuse_remove(struct inode *dir, struct dentry *entry,
enum fuse_opcode op)
{
- struct fuse_conn *fc = dir->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(dir);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
@@ -220,7 +232,7 @@ static int fuse_rmdir(struct inode *dir, struct dentry *entry)
static int fuse_rename(struct inode *olddir, struct dentry *oldent,
struct inode *newdir, struct dentry *newent)
{
- struct fuse_conn *fc = olddir->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(olddir);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
struct fuse_rename_in *inarg;
@@ -252,7 +264,7 @@ static int fuse_link(struct dentry *entry, struct inode *newdir,
struct dentry *newent)
{
struct inode *inode = entry->d_inode;
- struct fuse_conn *fc = inode->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(inode);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
struct fuse_link_in *inarg;
@@ -286,7 +298,7 @@ static int fuse_permission(struct inode *inode, int mask)
static int fuse_revalidate(struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
- struct fuse_conn *fc = inode->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(inode);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
struct fuse_getattr_out arg;
@@ -357,7 +369,7 @@ static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir)
static int read_link(struct dentry *dentry, char **bufp)
{
struct inode *inode = dentry->d_inode;
- struct fuse_conn *fc = inode->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(inode);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
unsigned long page;
@@ -417,7 +429,7 @@ static int fuse_follow_link(struct dentry *dentry, struct nameidata *nd)
static int fuse_dir_open(struct inode *inode, struct file *file)
{
- struct fuse_conn *fc = inode->i_sb->u.generic_sbp;
+ struct fuse_conn *fc = INO_FC(inode);
struct fuse_in in = FUSE_IN_INIT;
struct fuse_out out = FUSE_OUT_INIT;
struct fuse_getdir_out outarg;
@@ -453,15 +465,56 @@ static int fuse_dir_open(struct inode *inode, struct file *file)
static int fuse_dir_release(struct inode *inode, struct file *file)
{
struct file *cfile = file->private_data;
-
- if(!cfile)
- BUG();
-
fput(cfile);
return 0;
}
+static unsigned int iattr_to_fattr(struct iattr *iattr,
+ struct fuse_attr *fattr)
+{
+ unsigned int ivalid = iattr->ia_valid;
+ unsigned int fvalid = 0;
+
+ memset(fattr, 0, sizeof(*fattr));
+
+ if(ivalid & ATTR_MODE)
+ fvalid |= FATTR_MODE, fattr->mode = iattr->ia_mode;
+ if(ivalid & ATTR_UID)
+ fvalid |= FATTR_UID, fattr->uid = iattr->ia_uid;
+ if(ivalid & ATTR_GID)
+ fvalid |= FATTR_GID, fattr->gid = iattr->ia_gid;
+ if(ivalid & ATTR_SIZE)
+ fvalid |= FATTR_SIZE, fattr->size = iattr->ia_size;
+ /* You can only _set_ these together (they may change by themselves) */
+ if((ivalid & (ATTR_ATIME | ATTR_MTIME)) == (ATTR_ATIME | ATTR_MTIME)) {
+ fvalid |= FATTR_UTIME;
+ fattr->atime = iattr->ia_atime;
+ fattr->mtime = iattr->ia_mtime;
+ }
+
+ return fvalid;
+}
+
+static int fuse_setattr(struct dentry *entry, struct iattr *attr)
+{
+ struct inode *inode = entry->d_inode;
+ struct fuse_conn *fc = INO_FC(inode);
+ struct fuse_in in = FUSE_IN_INIT;
+ struct fuse_out out = FUSE_OUT_INIT;
+ struct fuse_setattr_in arg;
+
+ arg.valid = iattr_to_fattr(attr, &arg.attr);
+
+ in.h.opcode = FUSE_SETATTR;
+ in.h.ino = inode->i_ino;
+ in.argsize = sizeof(arg);
+ in.arg = &arg;
+ request_send(fc, &in, &out);
+
+ return out.h.error;
+}
+
static int fuse_dentry_revalidate(struct dentry *entry, int flags)
{
if(!entry->d_inode || !(flags & LOOKUP_CONTINUE))
@@ -481,9 +534,7 @@ static struct inode_operations fuse_dir_inode_operations =
rmdir: fuse_rmdir,
rename: fuse_rename,
link: fuse_link,
-#if 0
setattr: fuse_setattr,
-#endif
permission: fuse_permission,
revalidate: fuse_revalidate,
};
@@ -496,20 +547,20 @@ static struct file_operations fuse_dir_operations = {
};
static struct inode_operations fuse_file_inode_operations = {
+ setattr: fuse_setattr,
permission: fuse_permission,
revalidate: fuse_revalidate,
};
static struct inode_operations fuse_special_inode_operations = {
+ setattr: fuse_setattr,
permission: fuse_permission,
revalidate: fuse_revalidate,
};
-static struct file_operations fuse_file_operations = {
-};
-
static struct inode_operations fuse_symlink_inode_operations =
{
+ setattr: fuse_setattr,
readlink: fuse_readlink,
follow_link: fuse_follow_link,
revalidate: fuse_revalidate,
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-14 02:55:24 +0000