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njbfs-commits
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From: Ben O. <ben...@us...> - 2002-03-01 09:15:43
|
Update of /cvsroot/njbfs/njbfs
In directory usw-pr-cvs1:/tmp/cvs-serv8286
Modified Files:
Tag: ben
dir.c njb_usb.c njb_usb.h njbfs.h njbfs_cache.c njbfs_cache.h
njbfs_dir.c njbfs_proc.h nomad.c proc.c proc.h
Log Message:
Ben: first pass at the NJB write cache
Index: dir.c
===================================================================
RCS file: /cvsroot/njbfs/njbfs/dir.c,v
retrieving revision 1.3.2.2
retrieving revision 1.3.2.3
diff -C2 -d -r1.3.2.2 -r1.3.2.3
*** dir.c 24 Feb 2002 11:33:58 -0000 1.3.2.2
--- dir.c 1 Mar 2002 09:15:40 -0000 1.3.2.3
***************
*** 402,409 ****
struct njbfs_sb_info *info =
(struct njbfs_sb_info *) dentry->d_sb->u.generic_sbp;
- char buf[NJBFS_MAXPATHLEN];
! njbfs_get_name(dentry, buf);
! njbfs_cache_invalidate(dentry->d_parent);
! return njbfs_proc_unlink(info, buf);
}
--- 402,406 ----
struct njbfs_sb_info *info =
(struct njbfs_sb_info *) dentry->d_sb->u.generic_sbp;
! return njbfs_proc_unlink(info, dentry);
}
Index: njb_usb.c
===================================================================
RCS file: /cvsroot/njbfs/njbfs/njb_usb.c,v
retrieving revision 1.4.2.3
retrieving revision 1.4.2.4
diff -C2 -d -r1.4.2.3 -r1.4.2.4
*** njb_usb.c 24 Feb 2002 11:33:58 -0000 1.4.2.3
--- njb_usb.c 1 Mar 2002 09:15:40 -0000 1.4.2.4
***************
*** 223,227 ****
dbg("open: handshake ok");
! /* Get disk usage */
status = njb_usb_get_disk_usage(njb, &total, &free);
if (status < 0) {
--- 223,227 ----
dbg("open: handshake ok");
! /* Get disk usage */
status = njb_usb_get_disk_usage(njb, &total, &free);
if (status < 0) {
***************
*** 237,243 ****
return -ENOSPC;
}
! /**
! * Build track, write track tag, and get NJB track id as a result
! */
trackid = 0;
track = njb_usb_update_track_tag(njb, fattr, &trackid);
--- 237,245 ----
return -ENOSPC;
}
!
!
! /**
! * Build track, write track tag, and get NJB track id as a result
! */
trackid = 0;
track = njb_usb_update_track_tag(njb, fattr, &trackid);
***************
*** 250,258 ****
fattr->track = track; /* save track */
fattr->fileid = trackid; /* for requesting the track tag later */
!
return status;
} else if (fattr->fileid > 0) {
! dbg("attempting to open '%s'..", fattr->title);
/* Open for read track */
--- 252,261 ----
fattr->track = track; /* save track */
fattr->fileid = trackid; /* for requesting the track tag later */
!
return status;
} else if (fattr->fileid > 0) {
! printk("attempting to open '%s' (%d)..", fattr->title,
! fattr->fileid);
/* Open for read track */
***************
*** 348,365 ****
}
- if (fattr->fileid == 0) {
-
- /* update library counter */
- dbg("close: updating lib counter");
- status = njb_usb_update_library_counter(njb);
- if (status < 0) {
- err
- ("close: updating lib count error, status = %d, ",
- status);
- return -EPROTO;
- }
- }
-
- njb->isopen = 0;
dbg("close: jukebox closed");
--- 351,354 ----
***************
*** 523,526 ****
--- 512,516 ----
("write: bulk write error, actual_length = %d, status = %d",
actual_length, status);
+ return status;
}
if (actual_length < count) {
***************
*** 535,538 ****
--- 525,529 ----
err("write: can't verify last command, status = %d",
status);
+ return status;
}
***************
*** 568,574 ****
* Delete a file from the NJB
*/
! int njb_usb_delete(struct nomad_usb_data *nomad, char *file)
{
! info("TODO: usb delete");
return 0;
}
--- 559,603 ----
* Delete a file from the NJB
*/
! int njb_usb_delete(struct nomad_usb_data *njb, struct njbfs_fattr *fattr)
{
! u_int16_t lsw, msw;
! char njb_status;
! int status;
!
! if ( !fattr->fileid )
! return -ENOENT;
!
!
! lsw = LSW(fattr->fileid);
! msw = MSW(fattr->fileid);
! /* handshake, required for later set library counter */
! status = njb_usb_handshake(njb);
! if ( status < 0 ) {
! err("handshake failed...");
! return status;
! }
!
! /* setup phase */
! status = njb_usb_control(njb,
! usb_rcvctrlpipe(njb->nomad_dev,
! NJB_ENDPOINT_CONTROL),
! NJB_CMD_DELETE_TRACK,
! UT_READ | USB_TYPE_VENDOR |
! USB_RECIP_OTHER, msw, lsw, &njb_status, 1, 3);
!
! if ( status < 0 ) {
! err("error sending delete message");
! return status;
! } else if ( njb_status != NJB_OK ) {
! err("bad njb status = %d", njb_status);
! return -EIO;
! }
!
! status = njb_usb_update_library_counter(njb);
! if ( status < 0 ) {
! err("couldn't update library counter");
! return -EIO;
! }
!
return 0;
}
***************
*** 1224,1228 ****
/* Set track id, return track */
memcpy(&header->trackid, &data[1], 4);
! dbg("write_track_tag: got new track id = %d", header->trackid);
return 0;
--- 1253,1257 ----
/* Set track id, return track */
memcpy(&header->trackid, &data[1], 4);
! printk("write_track_tag: got new track id = %d", header->trackid);
return 0;
***************
*** 1476,1480 ****
return NULL;
}
!
}
return track;
--- 1505,1509 ----
return NULL;
}
! *trackid = header.trackid;
}
return track;
Index: njb_usb.h
===================================================================
RCS file: /cvsroot/njbfs/njbfs/njb_usb.h,v
retrieving revision 1.3.2.2
retrieving revision 1.3.2.3
diff -C2 -d -r1.3.2.2 -r1.3.2.3
*** njb_usb.h 24 Feb 2002 11:33:58 -0000 1.3.2.2
--- njb_usb.h 1 Mar 2002 09:15:40 -0000 1.3.2.3
***************
*** 158,161 ****
--- 158,163 ----
extern int njb_usb_close(struct nomad_usb_data *njb,
struct njbfs_fattr *fattr);
+ extern int njb_usb_close_no_release(struct nomad_usb_data *njb,
+ struct njbfs_fattr *fattr);
extern int njb_usb_write(struct nomad_usb_data *njb, char *name,
u_int32_t offset, u_int32_t count, void *buffer);
***************
*** 163,167 ****
extern int njb_usb_rename(struct nomad_usb_data *njb,
struct njbfs_fattr *fattr);
! extern int njb_usb_delete(struct nomad_usb_data *njb, char *file);
extern int njb_usb_create(struct nomad_usb_data *njb, char *file);
extern int njb_usb_handshake(struct nomad_usb_data *njb);
--- 165,169 ----
extern int njb_usb_rename(struct nomad_usb_data *njb,
struct njbfs_fattr *fattr);
! extern int njb_usb_delete(struct nomad_usb_data *njb, struct njbfs_fattr *);
extern int njb_usb_create(struct nomad_usb_data *njb, char *file);
extern int njb_usb_handshake(struct nomad_usb_data *njb);
Index: njbfs.h
===================================================================
RCS file: /cvsroot/njbfs/njbfs/njbfs.h,v
retrieving revision 1.4.2.2
retrieving revision 1.4.2.3
diff -C2 -d -r1.4.2.2 -r1.4.2.3
*** njbfs.h 24 Feb 2002 11:33:58 -0000 1.4.2.2
--- njbfs.h 1 Mar 2002 09:15:40 -0000 1.4.2.3
***************
*** 44,48 ****
#define NJBFS_BLOCKSIZE_BITS 12 /* 2^x = blocksize */
! #define NJBFS_ID3SIZE 8192 /* size of the false tag at the top */
#define NJBFS_FOOTERSIZE 4096 /* size of the zeroed footers at the bottom */
--- 44,48 ----
#define NJBFS_BLOCKSIZE_BITS 12 /* 2^x = blocksize */
! #define NJBFS_ID3SIZE 4096 /* size of the false tag at the top */
#define NJBFS_FOOTERSIZE 4096 /* size of the zeroed footers at the bottom */
***************
*** 100,103 ****
--- 100,104 ----
something that will require
a reload? */
+ struct njbfs_blockcache *bl_cache;
};
Index: njbfs_cache.c
===================================================================
RCS file: /cvsroot/njbfs/njbfs/njbfs_cache.c,v
retrieving revision 1.1.2.2
retrieving revision 1.1.2.3
diff -C2 -d -r1.1.2.2 -r1.1.2.3
*** njbfs_cache.c 26 Feb 2002 02:20:05 -0000 1.1.2.2
--- njbfs_cache.c 1 Mar 2002 09:15:40 -0000 1.1.2.3
***************
*** 112,116 ****
}
! static void __njbfs_destroy_hashtable(njbfs_hash_element **table)
{
njbfs_hash_element *el, *last;
--- 112,116 ----
}
! void __njbfs_destroy_hashtable(njbfs_hash_element **table)
{
njbfs_hash_element *el, *last;
***************
*** 146,150 ****
*/
! static int njbfs_add_hash_generic(njbfs_hash_element **table, char *id, void *data)
{
njbfs_hash_element *element;
--- 146,150 ----
*/
! int njbfs_add_hash_generic(njbfs_hash_element **table, char *id, void *data)
{
njbfs_hash_element *element;
***************
*** 172,176 ****
! static void* njbfs_get_hash_generic(njbfs_hash_element **table, char *id)
{
njbfs_hash_element *walk;
--- 172,176 ----
! void* njbfs_get_hash_generic(njbfs_hash_element **table, char *id)
{
njbfs_hash_element *walk;
***************
*** 758,761 ****
--- 758,763 ----
(fattr->size +
(NJBFS_BLOCKSIZE - 1)) >> (NJBFS_BLOCKSIZE_BITS - 1);
+
+ fattr->bl_cache = NULL;
fattr->fileid = track->header.trackid;
Index: njbfs_cache.h
===================================================================
RCS file: /cvsroot/njbfs/njbfs/njbfs_cache.h,v
retrieving revision 1.4.2.4
retrieving revision 1.4.2.5
diff -C2 -d -r1.4.2.4 -r1.4.2.5
*** njbfs_cache.h 26 Feb 2002 02:22:22 -0000 1.4.2.4
--- njbfs_cache.h 1 Mar 2002 09:15:40 -0000 1.4.2.5
***************
*** 214,217 ****
--- 214,223 ----
struct njbfs_fattr_list *add_fattr_to_list(struct njbfs_fattr_list **,
struct njbfs_fattr *);
+ void njbfs_destroy_fattr_cache();
+
+
+ int njbfs_add_hash_generic(njbfs_hash_element **table, char *id, void *data);
+ void* njbfs_get_hash_generic(njbfs_hash_element **table, char *id);
+ void __njbfs_destroy_hashtable(njbfs_hash_element **);
Index: njbfs_dir.c
===================================================================
RCS file: /cvsroot/njbfs/njbfs/njbfs_dir.c,v
retrieving revision 1.1.2.2
retrieving revision 1.1.2.3
diff -C2 -d -r1.1.2.2 -r1.1.2.3
*** njbfs_dir.c 26 Feb 2002 02:20:05 -0000 1.1.2.2
--- njbfs_dir.c 1 Mar 2002 09:15:40 -0000 1.1.2.3
***************
*** 60,67 ****
switch (*ch) {
case '/':
- *ch = '_';
case '*':
- *ch = '_';
case '?':
*ch = '_';
}
--- 60,67 ----
switch (*ch) {
case '/':
case '*':
case '?':
+ case '>':
+ case '<':
*ch = '_';
}
***************
*** 223,226 ****
--- 223,234 ----
gets a dirlist node (and creates a fattr struct)
for our virtual directories
+
+ BUGS:
+ We are unable to translate bad characters (?><) etc
+ in directory names for now... because we use
+ the directory name as a direct index into the hashtables.
+
+ this should be easily cleaned once Jorge introduces the
+ njbfs_track structure.
*/
static void njbfs_dirlist_node_directories(struct njbfs_dirlist_node *p,
***************
*** 299,302 ****
--- 307,320 ----
/**
* Get "/albums" directory entries from NJB cache
+ *
+ * Ok, albums are the trickiest thing to handle in a cache like this.
+ * we may have non-unique album names that we want to shove under
+ * one directory (eg _Unknown_),
+ * so we use a hashtable add/lookup method here to ensure
+ * uniqueness.
+ *
+ * sigh.
+ *
+ *
*/
int njbfs_load_albumsdir(struct njbfs_sb_info *info,
***************
*** 305,309 ****
--- 323,335 ----
struct njbfs_dirlist_node *p;
struct njbfs_album_list *list;
+ int hash_size = sizeof(njbfs_hash_element *) * NJBFS_GENERIC_HASH_SIZE;
+ njbfs_hash_element **table = kmalloc(hash_size, GFP_KERNEL);
+
+ if ( !table )
+ return -ENOMEM;
+
+ memset(table, 0, hash_size);
+
CHECK_FATTR_CACHE(info);
***************
*** 316,326 ****
--- 342,363 ----
return -ENOMEM;
}
+
+ if ( njbfs_get_hash_generic(table, list->album->name) )
+ /* already found the album, skip. */
+ continue;
+
+ njbfs_add_hash_generic(table, list->album->name, (void *) 1);
+
memset(p, 0, sizeof(struct njbfs_dirlist_node));
+
SAFE_STRDUP(p->entry.name, list->album->name);
njbfs_dirlist_node_directories(p,info);
+
p->prev = NULL;
p->next = dir->head;
dir->head = p;
}
+
+ __njbfs_destroy_hashtable(table);
return 0;
}
***************
*** 345,351 ****
--- 382,391 ----
return -ENOMEM;
}
+
memset(p, 0, sizeof(struct njbfs_dirlist_node));
+
SAFE_STRDUP(p->entry.name, list->artist->name);
njbfs_dirlist_node_directories(p, info);
+
p->prev = NULL;
p->next = dir->head;
***************
*** 375,380 ****
--- 415,422 ----
}
memset(p, 0, sizeof(struct njbfs_dirlist_node));
+
SAFE_STRDUP(p->entry.name, list->genre->name);
njbfs_dirlist_node_directories(p,info);
+
p->prev = NULL;
p->next = dir->head;
Index: njbfs_proc.h
===================================================================
RCS file: /cvsroot/njbfs/njbfs/njbfs_proc.h,v
retrieving revision 1.3.2.2
retrieving revision 1.3.2.3
diff -C2 -d -r1.3.2.2 -r1.3.2.3
*** njbfs_proc.h 24 Feb 2002 11:33:58 -0000 1.3.2.2
--- njbfs_proc.h 1 Mar 2002 09:15:40 -0000 1.3.2.3
***************
*** 22,26 ****
int njbfs_proc_rename(struct njbfs_sb_info *, struct inode *,
struct dentry *, struct inode *, struct dentry *);
! int njbfs_proc_unlink(struct njbfs_sb_info *, char *);
int njbfs_proc_create(struct njbfs_sb_info *, char *, struct njbfs_fattr **);
int njbfs_write(struct dentry *, unsigned long, unsigned long, char *);
--- 22,26 ----
int njbfs_proc_rename(struct njbfs_sb_info *, struct inode *,
struct dentry *, struct inode *, struct dentry *);
! int njbfs_proc_unlink(struct njbfs_sb_info *, struct dentry *);
int njbfs_proc_create(struct njbfs_sb_info *, char *, struct njbfs_fattr **);
int njbfs_write(struct dentry *, unsigned long, unsigned long, char *);
Index: nomad.c
===================================================================
RCS file: /cvsroot/njbfs/njbfs/nomad.c,v
retrieving revision 1.3.2.1
retrieving revision 1.3.2.2
diff -C2 -d -r1.3.2.1 -r1.3.2.2
*** nomad.c 15 Feb 2002 20:07:32 -0000 1.3.2.1
--- nomad.c 1 Mar 2002 09:15:40 -0000 1.3.2.2
***************
*** 40,44 ****
#include <linux/poll.h>
#include <linux/init.h>
! #include <linux/malloc.h>
#include <linux/spinlock.h>
#include <linux/smp_lock.h>
--- 40,44 ----
#include <linux/poll.h>
#include <linux/init.h>
! #include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/smp_lock.h>
Index: proc.c
===================================================================
RCS file: /cvsroot/njbfs/njbfs/proc.c,v
retrieving revision 1.6.2.5
retrieving revision 1.6.2.6
diff -C2 -d -r1.6.2.5 -r1.6.2.6
*** proc.c 26 Feb 2002 02:23:38 -0000 1.6.2.5
--- proc.c 1 Mar 2002 09:15:40 -0000 1.6.2.6
***************
*** 4,7 ****
--- 4,8 ----
*
* Copyright (C) 2001 Jörg Prante <joe...@gm...>
+ * Copyright (C) 2002 Ben Osheroff <be...@gi...>
*
* based on ftpfs by Florin Malita <fm...@ya...>
***************
*** 60,63 ****
--- 61,65 ----
static int njbfs_parse_filename(struct njbfs_fattr *fattr,
const char *file);
+ int njbfs_write_block_cache(struct dentry *dentry);
unsigned char *k_parse_attribute(unsigned char *buf, unsigned char *key);
***************
*** 244,247 ****
--- 246,252 ----
}
+ /*
+ lock, unless the read is called from read_until
+ */
int njbfs_read_lock(struct inode *i)
{
***************
*** 309,313 ****
{
struct njbfs_fattr *f;
- int status;
if (njbfs_lock(info))
return NULL;
--- 314,317 ----
***************
*** 374,377 ****
--- 378,384 ----
}
+ /*
+ TODO: move this to iget
+ */
njb_inode_mark_closed(inode);
njb_set_pos(inode, 0);
***************
*** 403,410 ****
}
-
-
njbfs_lock(info);
/* here's where we update the cache */
if ( fattr->update_cache ) {
--- 410,418 ----
}
njbfs_lock(info);
+ /* any pending writes? */
+ njbfs_write_block_cache(dentry);
+
/* here's where we update the cache */
if ( fattr->update_cache ) {
***************
*** 579,583 ****
*/
- #define PROFILE
int njbfs_read_until(struct file *f, unsigned int fileid, char *name, u_int32_t until, char *buffer)
--- 587,590 ----
***************
*** 587,594 ****
struct inode *i = f->f_dentry->d_inode;
- #ifdef PROFILE
- time_t start = CURRENT_TIME;
- int start_byte = njb_get_pos(i);
- #endif
if ( until == njb_get_pos(i) ) {
--- 594,597 ----
***************
*** 626,640 ****
}
- #ifdef PROFILE
- printk("pushed %d bytes in %d seconds\n",
- until - start_byte, CURRENT_TIME - start);
- #endif
njb_interruption_inode = 0;
return 0;
}
! /*
! lock, unless the read is called from read_until
*/
/**
--- 629,676 ----
}
njb_interruption_inode = 0;
return 0;
}
! /**
! * If the specified dentry is different than the one we're
! * reading from currently, close down the read.
*/
+ int njbfs_close_current(struct njbfs_sb_info *info,
+ struct inode *inode,
+ struct njbfs_fattr *fattr)
+ {
+ int status;
+ struct njbfs_fattr *opened_fattr;
+ struct dentry *current_dentry;
+
+ if ( !info->njb->current_dentry )
+ return 0;
+
+ current_dentry = info->njb->current_dentry;
+
+ opened_fattr =
+ njbfs_get_attr_nolock(current_dentry, info);
+
+ if ( !opened_fattr )
+ return -EINVAL;
+
+ if (fattr->fileid != opened_fattr->fileid) {
+ /* mark the inode as closed (usually njbfs_close does this) */
+ njb_inode_mark_closed(current_dentry->d_inode);
+ njb_set_pos(current_dentry->d_inode, 0);
+
+ if (
+ (status =
+ njb_usb_close_no_release(info->njb, opened_fattr))) {
+ if (status != NJB_NOT_CAPTURED) {
+ err("open: njb wouldn't close.");
+ njbfs_read_unlock(inode);
+ return -EIO;
+ }
+ }
+ }
+ return 0;
+ }
/**
***************
*** 651,659 ****
{
struct inode *inode = dentry->d_inode;
- struct super_block *sb = inode->i_sb;
struct njbfs_sb_info *info =
! (struct njbfs_sb_info *) sb->u.generic_sbp;
struct nomad_usb_data *njb = info->njb;
! struct njbfs_fattr *fattr, *opened_fattr;
char buf[NJBFS_MAXPATHLEN], name[NJBFS_MAXPATHLEN];
int bytes, status, faked = 0;
--- 687,695 ----
{
struct inode *inode = dentry->d_inode;
struct njbfs_sb_info *info =
! (struct njbfs_sb_info *) inode->i_sb->u.generic_sbp;
struct nomad_usb_data *njb = info->njb;
! struct njbfs_fattr *fattr;
!
char buf[NJBFS_MAXPATHLEN], name[NJBFS_MAXPATHLEN];
int bytes, status, faked = 0;
***************
*** 679,683 ****
create_id3_tag(dentry, buffer);
njb_set_pos(inode, 0);
- dbg("faked the id3 header.");
return NJBFS_BLOCKSIZE;
} else if (offset < NJBFS_ID3SIZE) {
--- 715,718 ----
***************
*** 685,693 ****
njb_set_pos(inode, offset + NJBFS_BLOCKSIZE);
memset(buffer, 0, NJBFS_BLOCKSIZE);
- dbg("faked the 2nd block.");
return NJBFS_BLOCKSIZE;
} else if (fattr->size - offset == NJBFS_FOOTERSIZE) {
memset(buffer, 0, NJBFS_BLOCKSIZE);
- dbg("faked the last block.");
return NJBFS_BLOCKSIZE;
} else if (fattr->size - offset == NJBFS_FOOTERSIZE * 2) {
--- 720,726 ----
***************
*** 700,734 ****
return -EINTR;
! if (njb->current_dentry) {
! /* There's a file already open on the jukebox.
! if it's not us, close it down and open our file up. */
!
! opened_fattr = njbfs_get_attr_nolock(njb->current_dentry, info);
!
! if ( !opened_fattr ) {
! njbfs_read_unlock(inode);
! return -EINVAL;
! }
!
! if (fattr->fileid != opened_fattr->fileid) {
! dbg
! ("closing '%s', opening '%s'", opened_fattr->title, fattr->title);
!
!
! /* mark the inode as closed (usually njbfs_close does this) */
! njb_inode_mark_closed(njb->current_dentry->d_inode);
! njb_set_pos(njb->current_dentry->d_inode, 0);
!
! if (
! (status =
! njb_usb_close_no_release(njb, opened_fattr))) {
! if (status != NJB_NOT_CAPTURED) {
! err("open: njb wouldn't close.");
! njbfs_read_unlock(inode);
! return -EIO;
! }
! }
! }
! }
if (!njb_inode_is_open(inode)) {
--- 733,739 ----
return -EINTR;
! status = njbfs_close_current(info, inode, fattr);
! if ( status )
! return status;
if (!njb_inode_is_open(inode)) {
***************
*** 744,748 ****
}
- /* transfer */
/* this should detect if they're trying to seek in the file.
--- 749,752 ----
***************
*** 753,756 ****
--- 757,761 ----
njbfs_read_until(file, fattr->fileid, name, offset, buffer);
+ /* transfer */
if (
(bytes =
***************
*** 768,773 ****
}
/**
! * Write to a file
*
* @param dentry directory entry to read from
--- 773,953 ----
}
+ void destroy_block_cache(struct njbfs_fattr *fattr)
+ {
+ int i;
+ for(i=0; i < fattr->bl_cache->count; i++)
+ kfree(fattr->bl_cache->blocks[i].buffer);
+
+ kfree(fattr->bl_cache);
+ fattr->bl_cache = NULL;
+ }
+
+ /*
+ find a block in the given block cache.
+ returns the pointer offset if found,
+ -1 if not found
+ */
+ int find_in_block_cache(struct njbfs_blockcache *bl, off_t offset)
+ {
+ int i;
+ for(i=0; i < bl->count; i++) {
+ if ( bl->blocks[i].offset == offset )
+ return i;
+ }
+ return -1;
+ }
+
+ int add_to_block_cache(struct njbfs_fattr *fattr, off_t offset, off_t size, char *buffer)
+ {
+ int index;
+ void *buf;
+ struct njbfs_blockcache *bl = fattr->bl_cache;
+
+ if ( !fattr->bl_cache ) {
+ fattr->bl_cache = kmalloc(sizeof(struct njbfs_blockcache), GFP_KERNEL);
+ if ( !fattr->bl_cache ) {
+ err("couldn't kmalloc block cache");
+ return -ENOMEM;
+ }
+ memset(fattr->bl_cache, 0, sizeof(struct njbfs_blockcache));
+ fattr->bl_cache->count = 0;
+ bl = fattr->bl_cache;
+ }
+
+
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if ( !buf ) {
+ err("couldn't kmalloc block in cache");
+ destroy_block_cache(fattr);
+ return -EINVAL;
+ }
+
+ /*
+ see if we already have the block in cache
+ */
+ index = find_in_block_cache(bl, offset);
+ if ( index == -1 ) {
+ if ( bl->count >= NJBFS_MAXBLOCKS ) {
+ err("file size too large, please increase NBFS_MAXBLOCKS");
+ kfree(buf);
+ destroy_block_cache(fattr);
+ return -EINVAL;
+ }
+ memcpy(buf, buffer, size);
+ bl->blocks[bl->count].buffer = buf;
+ bl->blocks[bl->count].size = size;
+ bl->blocks[bl->count].offset = offset;
+ bl->count++;
+ } else {
+ kfree(bl->blocks[index].buffer);
+ memcpy(buf, buffer, size);
+ bl->blocks[index].buffer = buf;
+ bl->blocks[size].size = size;
+ bl->blocks[bl->count].offset = offset;
+ }
+ return 0;
+ }
+
+ int njbfs_write_block_cache(struct dentry *dentry)
+ {
+ off_t offset, size;
+ int i, status;
+ struct njbfs_fattr *fattr;
+ struct njbfs_sb_info *info =
+ (struct njbfs_sb_info *) dentry->d_inode->i_sb->u.generic_sbp;
+
+ fattr = njbfs_get_attr_nolock(dentry, info);
+ if ( !fattr )
+ return -ENOENT;
+
+ if ( !fattr->bl_cache || !fattr->bl_cache->count )
+ return 0;
+
+
+ /*
+ calculate file size.
+ */
+ for(i= 0, size = 0; i < fattr->bl_cache->count; i++)
+ size += fattr->bl_cache->blocks[i].size;
+
+
+ /*
+ make sure no read is in progress.
+ */
+ status = njbfs_close_current(info, dentry->d_inode, fattr);
+ if ( status )
+ return status;
+
+ /*
+ give the real size of the file to open
+ so the nomad will know how much to expect
+ */
+ fattr->size = size;
+
+ /*
+ change to open_write
+ */
+ status = njb_usb_open(info->njb, fattr);
+ if ( status )
+ return status;
+
+
+ /*
+ now set the size to the ID3 faking size
+ */
+ fattr->size =
+ size + NJBFS_ID3SIZE + NJBFS_FOOTERSIZE +
+ (NJBFS_BLOCKSIZE - (size % NJBFS_BLOCKSIZE));
+ fattr->real_size = size;
+
+ /*
+ set the cache to update.
+ */
+ fattr->update_cache = 1;
+
+ /*
+ do some tricky fun stuff here to
+ parse id3 headers and rewrite the file if there
+ was an old file, etc.
+ */
+
+
+ for(i = 0; i < fattr->bl_cache->count; i++) {
+ offset = find_in_block_cache(fattr->bl_cache, i * NJBFS_BLOCKSIZE);
+ status = njb_usb_write(info->njb, fattr->title,
+ fattr->bl_cache->blocks[offset].offset,
+ fattr->bl_cache->blocks[offset].size,
+ fattr->bl_cache->blocks[offset].buffer);
+ if ( status < 0 ) {
+ destroy_block_cache(fattr);
+ njb_usb_close(info->njb, fattr);
+ return status;
+ }
+ }
+
+ destroy_block_cache(fattr);
+
+ status = njb_usb_close(info->njb, fattr);
+
+ /* update library counter */
+ dbg("write_block_cache: updating lib counter");
+ status = njb_usb_update_library_counter(info->njb);
+ if (status < 0) {
+ err
+ ("close: updating lib count error, status = %d, ",
+ status);
+ return -EPROTO;
+ }
+
+ if ( status < 0 )
+ return status;
+ else
+ return 0;
+
+ }
+
/**
! * Write to a file - actually, just add to the block cache.
*
* @param dentry directory entry to read from
***************
*** 780,789 ****
unsigned long count, char *buffer)
{
- struct inode *inode = dentry->d_inode;
- struct super_block *sb = inode->i_sb;
struct njbfs_sb_info *info =
! (struct njbfs_sb_info *) sb->u.generic_sbp;
char buf[NJBFS_MAXPATHLEN], name[NJBFS_MAXPATHLEN];
! int bytes;
njbfs_get_name(dentry, buf);
--- 960,969 ----
unsigned long count, char *buffer)
{
struct njbfs_sb_info *info =
! (struct njbfs_sb_info *) dentry->d_inode->i_sb->u.generic_sbp;
!
! struct njbfs_fattr *fattr;
char buf[NJBFS_MAXPATHLEN], name[NJBFS_MAXPATHLEN];
! int status;
njbfs_get_name(dentry, buf);
***************
*** 800,803 ****
--- 980,993 ----
if (njbfs_lock(info))
return (-EINTR);
+
+ fattr = njbfs_get_attr_nolock(dentry, info);
+ if ( !fattr ) {
+ err("couldn't find fattr");
+ return -EINVAL;
+ }
+
+ status = add_to_block_cache(fattr, offset, count, buffer);
+
+ #if 0
if (
(bytes =
***************
*** 808,819 ****
return bytes;
}
njbfs_unlock(info);
! /* unload dir cache */
! /*
! njbfs_cache_invalidate(dentry->d_parent);
! info("write: offset=%ld, count=%ld, bytes=%d", offset, count, bytes);
! */
! return bytes;
}
--- 998,1009 ----
return bytes;
}
+ #endif
+
njbfs_unlock(info);
! if ( status == 0 )
! return count;
! else
! return status;
}
***************
*** 879,883 ****
char old_buf[NJBFS_MAXPATHLEN + 6], new_buf[NJBFS_MAXPATHLEN + 6];
struct njbfs_fattr *old_fattr, *new_fattr;
! int status;
njbfs_get_name(old_dentry, old_buf);
--- 1069,1073 ----
char old_buf[NJBFS_MAXPATHLEN + 6], new_buf[NJBFS_MAXPATHLEN + 6];
struct njbfs_fattr *old_fattr, *new_fattr;
! int status = 0;
njbfs_get_name(old_dentry, old_buf);
***************
*** 940,961 ****
* Delete a file
*/
! int njbfs_proc_unlink(struct njbfs_sb_info *info, char *file)
{
! char buf[NJBFS_MAXPATHLEN + 6];
int status;
- if (strlen(info->mnt.root) + strlen(file) > NJBFS_MAXPATHLEN) {
- err("unlink: path too long!");
- return -EINVAL;
- }
- sprintf(buf, "%s%s", info->mnt.root, file);
-
if (njbfs_lock(info))
return -EINVAL;
! if ((status = njb_usb_delete(info->njb, buf)) < 0) {
err("unlink: couldn't delete file!");
status = -EIO;
}
njbfs_unlock(info);
return status;
--- 1130,1156 ----
* Delete a file
*/
! int njbfs_proc_unlink(struct njbfs_sb_info *info, struct dentry *dentry)
{
! struct njbfs_fattr *fattr;
int status;
if (njbfs_lock(info))
return -EINVAL;
! fattr = njbfs_get_attr_nolock(dentry, info);
! if ( ! fattr ) {
! err("couldn't find fattr.");
! njbfs_unlock(info);
! return -ENOENT;
! }
!
! if ((status = njb_usb_delete(info->njb, fattr)) < 0) {
err("unlink: couldn't delete file!");
status = -EIO;
}
+
+ njbfs_remove_fattr(fattr);
+ njbfs_cache_empty(info);
+
njbfs_unlock(info);
return status;
Index: proc.h
===================================================================
RCS file: /cvsroot/njbfs/njbfs/proc.h,v
retrieving revision 1.1.2.1
retrieving revision 1.1.2.2
diff -C2 -d -r1.1.2.1 -r1.1.2.2
*** proc.h 24 Feb 2002 11:33:58 -0000 1.1.2.1
--- proc.h 1 Mar 2002 09:15:40 -0000 1.1.2.2
***************
*** 4,8 ****
#include "nomad_usb.h"
! #define UNKNOWN_STRING "__unknown__"
#endif
--- 4,30 ----
#include "nomad_usb.h"
! /*
! This is about 24 MB worth of data.
! If more is needed, well...
!
! hmm.
! Maybe later we can add a "large_transfers"
! flag or something.
! */
!
! #define NJBFS_MAXBLOCKS 6000
!
+ struct njbfs_block {
+ off_t offset;
+ off_t size;
+ void *buffer;
+ };
+
+ struct njbfs_blockcache {
+ int count;
+ struct njbfs_block blocks[NJBFS_MAXBLOCKS];
+ };
+
+ #define UNKNOWN_STRING "<Unknown>"
#endif
|
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