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regards
akshay.
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hi,
if it's not the wrong location of the fs.h file (i really doubt it is)
... then try this ... since the compiler is saying "dereferencing pointer to
incomplete type" ... maybe it is that the struct u r passing to the function
is not properly initialized ...
like if the struct object u r passing to the function has been just
intialized as
struct buffer_head *structobbject;
then structobject is not initialized ...
try
structobject = new buffer_head[1];
then u can pass structobject to ur function and use map->b_data within the
function...
this may work .. try it ...
if this doesn't .. post again .. i'll think of something else.
dinesh.
- Perfection or Nothing.
Dear all,
We've just witnessed a debate about allowing /banning HTML mail. I
received (or didn't receive, choose whatever you want) such a mail from
ILUG Delhi, which highlights the problem of banning such mail.
One member, Tarun Upadhyay, has done some hard work to create a table
listing software available commercially and in open source, and has tried
to start a discussion. His table, when sent in HTML, got blocked because
ILUG Delhi blocks all attachments. When he sent it as in-line plain text,
you can see what came through. I can't read head or tail of it because
of the line wrapping, and I don't have time to manually re-format it
just to read it.
Tarun is probably going to try putting it up on some Website. Not all of
us list members have access to such Websites, and the ILUG groups don't
seem to provide this sort of Vault as a service to its members. (ILUG
Delhi certainly doesn't seem to.) And if I were in his place, I wouldn't
have taken the trouble to find a Website in this case; this table covers a
subject fundamental enough for me to want to send it to all list members
by email.
I asked Tarun, by direct email, to send me the table as an HTML attachment.
He did. My purpose was served. Is this a scalable model? If a hundred
members of ILUGD (they have many hundred) had asked individually, should
I expect that he'll oblige all of them?
Who loses and who wins in this case? I'd say the whole mailing list loses,
because no discussion really happens, and Tarun Upadhyay's work "goes
waste" in a sense. As it is, we know how rare it is for any member of
any list to create any original content and submit it to the list. What
would you suggest we should do in situations like this?
My suggestion: all emails submitted with attachments should be forwarded
with moderator approval (if Mailman permits such a filtering); It should
not blindly be stripped of attachments.
Just a thought. :)
regards,
Shuvam
On Tue, 30 Sep 2003, Tarun Upadhyay wrote:
> All right. All right. I figured out the hard way that I cannot send
> attachments to the list. So here it is as inline text.
>
> Microsoft OSS
> Commercial Unix
>
> Kernel / Base OS Windows 2003 Linux, BSD
> AIX, Solaris
>
> Authentication and Authorization,SSO Active Directory OpenLDAP
> NDS, sunOne
>
> File Services
> -volume management Volume Manager LVM
> VeritasManager
> -distributed DFS Samba, NFS (Client
> mode) NFS, AFS
>
> Database SQL Server Postgres, mysql
> Oracle
>
> Network Services
> -VPN, Firewalling PPTP, ICF, ISA PPP, S/WAN,
iptables
> Checkpoint
> -Routing, WAN RAS, ICS iproute2
> cisco routers
> -DNS Active Directory bind
> ?
> -Mail Exchange Sendmail, Qmail
> sunOne messaging
> +HTTP Services
> -Application Server IIS, MSMQ, COM+ Tomcat, Jboss,
> Apache Weblogic,MQSeries
> -Proxy Server ISA Squid
> iPlanet ?
> -Content Management, Portals CMS Wiki?
> Plum Tree
>
> Application Frameworks .NET J2EE
> J2EE
>
> Network Management SMS,MOM OpenNMS
> Tivoli, OpenView
>
> Collaboration Exchange + Outlook ?
> Domino
>
> Business Integration BizTalk ?
> WebMethods,Vitria
>
> Let me know your opinions please.
>
> Thanks
> Tarun
>
> -----Original Message-----
> From: ilugd-bounces+tarun=tarunupadhyay.com(a)lists.linux-delhi.org
> [mailto:ilugd-bounces+tarun=tarunupadhyay.com@lists.linux-delhi.org]
> On Behalf Of Tarun Upadhyay
> Sent: Tuesday, September 30, 2003 12:31 PM
> To: 'The Linux-Delhi mailing list'
> Subject: RE: [ilugd] Enterprise Software Stack across operating
> Systems ?
>
>
> Ooops. Forgot to attach the list.
> Here it comes.
>
> From: ilugd-bounces+tarun=tarunupadhyay.com(a)lists.linux-delhi.org
> [mailto:ilugd-bounces+tarun=tarunupadhyay.com@lists.linux-delhi.org]
> On Behalf Of Tarun Dua
> Sent: Tuesday, September 30, 2003 10:57 AM
> To: The Linux-Delhi mailing list
> Subject: Re: [ilugd] Enterprise Software Stack across operating
> Systems ?
>
>
> On Tue, 2003-09-30 at 03:35, Tarun Upadhyay wrote:
> > Alright, all sysadmins and PHBs.
> I am only an ignorant self-proclaimed sysadmin who is a PHB by the
> way.
> > I would welcome any opinions on (yeah my asbestos suit is on):
> > A) any services/features/products that I might have missed. (which
> > estimatedely are used in at least 25% of enterprises)
> > B) any information that you think is factually incorrect in the
> > sheet.
> The sheet is invisible to me as well. Can you post the link to it.
> -Tarun Dua http://www.tarundua.net
>
>
>
> _______________________________________________
> ilugd mailing list
> ilugd(a)lists.linux-delhi.org
> http://frodo.hserus.net/mailman/listinfo/ilugd
>
hi all,
i m here again with my queries... below i m giving my source code of bitmap.c... there i m includinh fs.h and myfs_fs.h....
fs.h is already existing... and myfs_fs.h is created by me...
the source code is .............
/*
* linux/fs/myfs/bitmap.c
*/
#include "fs.h"
#include "myfs_fs.h"
static int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
unsigned long myfs_count_free (struct buffer_head * map, unsigned int numchars)
{
unsigned int i;
unsigned long sum = 0;
if (!map)
return (0);
for (i = 0; i < numchars; i++)
sum += nibblemap[map->b_data[i] & 0xf] + /*(line no 19) */
nibblemap[(map->b_data[i] >> 4) & 0xf]; /*(line no20) */
return (sum);
}
now when i try to make an binary object file with the command gcc -c bitmap.c it gives me the follwoing error. the realted structe part in the fs.h is given below....
*********************************************************************
ERROR :-
[root@localhost root]# cd /usr/src/
[root@localhost src]# cd linux-2.4.7-10
[root@localhost linux-2.4.7-10]# cd fs
[root@localhost fs]# cd myfs
[root@localhost myfs]# gcc -c bitmap.c
bitmap.c:11: warning: `struct buffer_head' declared inside parameter list
bitmap.c:11: warning: its scope is only this definition or declaration, which is probably not what you want.
bitmap.c: In function `myfs_count_free':
bitmap.c:19: dereferencing pointer to incomplete type
bitmap.c:20: dereferencing pointer to incomplete type
[root@localhost myfs]#
********************************************************************
fs.h:
struct buffer_head {
/* First cache line: */
struct buffer_head *b_next; /* Hash queue list */
unsigned long b_blocknr; /* block number */
unsigned short b_size; /* block size */
unsigned short b_list; /* List that this buffer appears */
kdev_t b_dev; /* device (B_FREE = free) */
atomic_t b_count; /* users using this block */
kdev_t b_rdev; /* Real device */
unsigned long b_state; /* buffer state bitmap (see above) */
unsigned long b_flushtime; /* Time when (dirty) buffer should be written */
struct buffer_head *b_next_free;/* lru/free list linkage */
struct buffer_head *b_prev_free;/* doubly linked list of buffers */
struct buffer_head *b_this_page;/* circular list of buffers in one page */
struct buffer_head *b_reqnext; /* request queue */
struct buffer_head **b_pprev; /* doubly linked list of hash-queue */
/***************** it can't access b_data *******************/
char * b_data; /* pointer to data block */
/************************************************************/
struct page *b_page; /* the page this bh is mapped to */
void (*b_end_io)(struct buffer_head *bh, int uptodate); /* I/O completion */
void *b_private; /* reserved for b_end_io */
unsigned long b_rsector; /* Real buffer location on disk */
wait_queue_head_t b_wait;
struct inode * b_inode;
struct list_head b_inode_buffers; /* doubly linked list of inode dirty buffers */
#ifdef CONFIG_BUFFER_DEBUG
struct buffer_history b_history;
#endif
};
***********************************************
" dereferencing pointer to incomplete type "
y this error?... its has this field then y it can't access?... is it that bitmap.c can't access fs.h.. its in the same folder.... plz help me..
tahnx in advance...
take care
Deepali
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