userfs.cpp File Reference

#include "mos/filesystem/userfs/userfs.hpp"
#include "mos/filesystem/dentry.hpp"
#include "mos/filesystem/vfs_types.hpp"
#include "mos/filesystem/vfs_utils.hpp"
#include "mos/misc/profiling.hpp"
#include "mos/syslog/printk.hpp"
#include "proto/filesystem.pb.h"
#include "proto/filesystem.services.h"
#include <algorithm>
#include <librpc/macro_magic.h>
#include <librpc/rpc.h>
#include <librpc/rpc_client.h>
#include <librpc/rpc_server.h>
#include <mos/filesystem/fs_types.h>
#include <mos_stdio.hpp>
#include <mos_stdlib.hpp>
#include <mos_string.hpp>
#include <pb.h>
#include <pb_decode.h>
#include <pb_encode.h>

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Classes
struct	AutoCleanup

Macros
#define	userfs_get(_fs, _fmt, ...)

Functions
inode_t *	i_from_pbfull (const mosrpc_fs_inode_info *stat, superblock_t *sb, void *private_data)
	Convert a protobuf inode to a kernel inode.
mosrpc_fs_inode_info *	i_to_pb_full (const inode_t *i, mosrpc_fs_inode_info *pbi)
	Convert a kernel inode to a protobuf inode.
mosrpc_fs_inode_ref	i_to_pb_ref (const inode_t *i)
void	userfs_ensure_connected (userfs_t *userfs)
	Ensure that the userfs is connected to the server.
static bool	userfs_iop_hardlink (dentry_t *d, inode_t *i, dentry_t *new_d)
static void	userfs_iop_iterate_dir (dentry_t *dentry, vfs_listdir_state_t *state, dentry_iterator_op add_record)
static bool	userfs_iop_lookup (inode_t *dir, dentry_t *dentry)
static bool	userfs_iop_mkdir (inode_t *dir, dentry_t *dentry, file_perm_t perm)
static bool	userfs_iop_mknode (inode_t *dir, dentry_t *dentry, file_type_t type, file_perm_t perm, dev_t dev)
static bool	userfs_iop_newfile (inode_t *dir, dentry_t *dentry, file_type_t type, file_perm_t perm)
static size_t	userfs_iop_readlink (dentry_t *dentry, char *buffer, size_t buflen)
static bool	userfs_iop_rename (inode_t *old_dir, dentry_t *old_dentry, inode_t *new_dir, dentry_t *new_dentry)
static bool	userfs_iop_rmdir (inode_t *dir, dentry_t *dentry)
static bool	userfs_iop_symlink (inode_t *dir, dentry_t *dentry, const char *symname)
static bool	userfs_iop_unlink (inode_t *dir, dentry_t *dentry)
static bool	userfs_fop_open (inode_t *inode, file_t *file, bool created)
static PtrResult< phyframe_t >	userfs_inode_cache_fill_cache (inode_cache_t *cache, uint64_t pgoff)
long	userfs_inode_cache_flush_page (inode_cache_t *cache, uint64_t pgoff, phyframe_t *page)
long	userfs_sync_inode (inode_t *inode)
PtrResult< dentry_t >	userfs_fsop_mount (filesystem_t *fs, const char *device, const char *options)

Variables
const inode_ops_t	userfs_iops
const file_ops_t	userfs_fops
const inode_cache_ops_t	userfs_inode_cache_ops
const superblock_ops_t	userfs_sb_ops

Macro Definition Documentation

userfs_get

#define userfs_get	(		_fs,
			_fmt,
			... )

Value:

    statement_expr(userfs_t *, {                                                                                                                                         \
        retval = container_of(_fs, userfs_t, fs);                                                                                                                        \
        userfs_ensure_connected(retval);                                                                                                                                 \
        pr_dinfo2(userfs, "calling '%s' (rpc_server '%s'): " _fmt, _fs->name.c_str(), retval->rpc_server_name.c_str() __VA_OPT__(, __VA_ARGS__));                        \
    })

Definition at line 34 of file userfs.cpp.

Referenced by userfs_fsop_mount(), userfs_inode_cache_fill_cache(), userfs_inode_cache_flush_page(), userfs_iop_hardlink(), userfs_iop_iterate_dir(), userfs_iop_lookup(), userfs_iop_mkdir(), userfs_iop_mknode(), userfs_iop_newfile(), userfs_iop_readlink(), userfs_iop_rename(), userfs_iop_rmdir(), userfs_iop_symlink(), userfs_iop_unlink(), and userfs_sync_inode().

Function Documentation

i_from_pbfull()

inode_t * i_from_pbfull	(	const mosrpc_fs_inode_info *	pbi,
		superblock_t *	sb,
		void *	private_data )

Convert a protobuf inode to a kernel inode.

Parameters

pbi	The protobuf inode.
sb	The superblock.
private	The private data for the inode.

Returns

inode_t* An allocated kernel inode.

Definition at line 59 of file userfs.cpp.

Referenced by userfs_fsop_mount(), userfs_iop_lookup(), userfs_iop_mkdir(), and userfs_iop_newfile().

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i_to_pb_full()

mosrpc_fs_inode_info * i_to_pb_full	(	const inode_t *	i,
		mosrpc_fs_inode_info *	pbi )

Convert a kernel inode to a protobuf inode.

Parameters

i	The kernel inode.
pbi	The protobuf inode, which must be allocated.

Returns

pb_inode* The protobuf inode, returned for convenience.

Definition at line 80 of file userfs.cpp.

Referenced by userfs_sync_inode().

i_to_pb_ref()

mosrpc_fs_inode_ref i_to_pb_ref

(

const inode_t *

i

)

Definition at line 99 of file userfs.cpp.

Referenced by userfs_inode_cache_fill_cache(), userfs_inode_cache_flush_page(), userfs_iop_iterate_dir(), userfs_iop_lookup(), userfs_iop_mkdir(), userfs_iop_newfile(), userfs_iop_readlink(), userfs_iop_unlink(), and userfs_sync_inode().

userfs_ensure_connected()

void userfs_ensure_connected

(

userfs_t *

userfs

)

Ensure that the userfs is connected to the server.

Parameters

userfs

The userfs to connect.

Definition at line 105 of file userfs.cpp.

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userfs_iop_hardlink()

static bool userfs_iop_hardlink ( dentry_t * d, inode_t * i, dentry_t * new_d )

static

Definition at line 118 of file userfs.cpp.

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userfs_iop_iterate_dir()

static void userfs_iop_iterate_dir ( dentry_t * dentry, vfs_listdir_state_t * state, dentry_iterator_op add_record )

static

Definition at line 130 of file userfs.cpp.

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userfs_iop_lookup()

static bool userfs_iop_lookup ( inode_t * dir, dentry_t * dentry )

static

Definition at line 164 of file userfs.cpp.

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userfs_iop_mkdir()

static bool userfs_iop_mkdir ( inode_t * dir, dentry_t * dentry, file_perm_t perm )

static

Definition at line 201 of file userfs.cpp.

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userfs_iop_mknode()

static bool userfs_iop_mknode ( inode_t * dir, dentry_t * dentry, file_type_t type, file_perm_t perm, dev_t dev )

static

Definition at line 240 of file userfs.cpp.

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userfs_iop_newfile()

static bool userfs_iop_newfile ( inode_t * dir, dentry_t * dentry, file_type_t type, file_perm_t perm )

static

Definition at line 255 of file userfs.cpp.

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userfs_iop_readlink()

static size_t userfs_iop_readlink ( dentry_t * dentry, char * buffer, size_t buflen )

static

Definition at line 295 of file userfs.cpp.

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userfs_iop_rename()

static bool userfs_iop_rename ( inode_t * old_dir, dentry_t * old_dentry, inode_t * new_dir, dentry_t * new_dentry )

static

Definition at line 331 of file userfs.cpp.

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userfs_iop_rmdir()

static bool userfs_iop_rmdir ( inode_t * dir, dentry_t * dentry )

static

Definition at line 346 of file userfs.cpp.

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userfs_iop_symlink()

static bool userfs_iop_symlink ( inode_t * dir, dentry_t * dentry, const char * symname )

static

Definition at line 358 of file userfs.cpp.

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userfs_iop_unlink()

static bool userfs_iop_unlink ( inode_t * dir, dentry_t * dentry )

static

Definition at line 371 of file userfs.cpp.

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userfs_fop_open()

static bool userfs_fop_open ( inode_t * inode, file_t * file, bool created )

static

Definition at line 417 of file userfs.cpp.

userfs_inode_cache_fill_cache()

static PtrResult< phyframe_t > userfs_inode_cache_fill_cache ( inode_cache_t * cache, uint64_t pgoff )

static

Definition at line 436 of file userfs.cpp.

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userfs_inode_cache_flush_page()

long userfs_inode_cache_flush_page	(	inode_cache_t *	cache,
		uint64_t	pgoff,
		phyframe_t *	page )

Definition at line 478 of file userfs.cpp.

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userfs_sync_inode()

long userfs_sync_inode

(

inode_t *

inode

)

Definition at line 522 of file userfs.cpp.

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userfs_fsop_mount()

PtrResult< dentry_t > userfs_fsop_mount	(	filesystem_t *	fs,
		const char *	device,
		const char *	options )

Definition at line 555 of file userfs.cpp.

Referenced by userfs_manager_register_filesystem().

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Variable Documentation

userfs_iops

const inode_ops_t userfs_iops

Initial value:

= {
    .hardlink = userfs_iop_hardlink,
    .iterate_dir = userfs_iop_iterate_dir,
    .lookup = userfs_iop_lookup,
    .mkdir = userfs_iop_mkdir,
    .mknode = userfs_iop_mknode,
    .newfile = userfs_iop_newfile,
    .readlink = userfs_iop_readlink,
    .rename = userfs_iop_rename,
    .rmdir = userfs_iop_rmdir,
    .symlink = userfs_iop_symlink,
    .unlink = userfs_iop_unlink,
}

Definition at line 403 of file userfs.cpp.

Referenced by i_from_pbfull(), userfs_iop_lookup(), userfs_iop_mkdir(), and userfs_iop_newfile().

userfs_fops

const file_ops_t userfs_fops

Initial value:

= {
    .open = userfs_fop_open,
    .read = vfs_generic_read,
    .write = vfs_generic_write,
    .release = NULL,
    .seek = NULL,
    .mmap = NULL,
    .munmap = NULL,
}

Definition at line 426 of file userfs.cpp.

Referenced by i_from_pbfull(), userfs_iop_lookup(), userfs_iop_mkdir(), and userfs_iop_newfile().

userfs_inode_cache_ops

const inode_cache_ops_t userfs_inode_cache_ops

Initial value:

= {
    .fill_cache = userfs_inode_cache_fill_cache,
    .page_write_begin = simple_page_write_begin,
    .page_write_end = simple_page_write_end,
    .flush_page = userfs_inode_cache_flush_page,
}

Definition at line 515 of file userfs.cpp.

Referenced by userfs_iop_lookup(), userfs_iop_mkdir(), and userfs_iop_newfile().

userfs_sb_ops

const superblock_ops_t userfs_sb_ops

Initial value:

= {
    .drop_inode = NULL,
    .sync_inode = userfs_sync_inode,
}

Definition at line 550 of file userfs.cpp.

Referenced by userfs_fsop_mount().