Debian bug report logs -
#1744, boring messages
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Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
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Date: Mon, 23 Oct 95 16:02 EDT
From: Raul Miller <rdm@tad.micro.umn.edu>
To: debian-bugs@pixar.com
On a newly created (though slightly fudged) debian system, I'm getting
the message:
dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
when I try and use dpkg (-i or -C, for instance).
/var/lib/dpkg/updates/ exists and is empty.
--
Raul
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To: Raul Miller <rdm@tad.micro.umn.edu>
Subject: Bug#1744: Acknowledgement (was: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
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Thank you for the problem report you have sent regarding Debian GNU/Linux.
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From: Raul Miller <rdm@tad.micro.umn.edu>
To: debian-bugs-request@pixar.com
Subject:
reassign 1744 dpkg
reassign 1676 w3-el
reassign 1675 w3-el
reassign 1745 base?, perl?
Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
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From: Raul Miller <rdm@tad.micro.umn.edu>
To: debian-bugs@pixar.com
Cc: iwj10@thor.cam.ac.uk
Here's an strace of dpkg failing. [Remember, this is on an empty
directory.]
Notice especially the line that reads:
readdir(4, 0x48000) = -1 ENOENT (No such file or directory)
I don't have a clue where that 0x48000 argument is coming from, but it
looks like it's corrupt....
uselib("/lib/ld.so") = 0
getuid() = 0
geteuid() = 0
getgid() = 0
getegid() = 0
stat("/etc/ld.so.cache", {st_mode=S_IFREG|0644, st_size=410, ...}) = 0
open("/etc/ld.so.cache", O_RDONLY) = 3
mmap(0, 410, PROT_READ, MAP_SHARED, 3, 0) = 0x40000000
close(3) = 0
uselib("/lib/libc.so.4.6.27") = 0
munmap(0x40000000, 410) = 0
munmap(0x62f00000, 20480) = 0
brk(0) = 0x2cae4
brk(0x2fae4) = 0x2fae4
brk(0x30000) = 0x30000
brk(0x31000) = 0x31000
umask(022) = 022
sysinfo({uptime=572, loads=[0, 864, 0] totalram=11497472, freeram=6713344, sharedram=2146304, bufferram=2777088} totalswap=0, freeswap=0, procs=13}) = 0
getuid() = 0
geteuid() = 0
access("/var/lib/dpkg", W_OK) = 0
open("/var/lib/dpkg/lock", O_RDWR|O_CREAT|O_TRUNC, 0660) = 3
fcntl(3, F_SETLK, {type=F_EXLCK, whence=SEEK_SET, start=0, len=0}) = 0
brk(0x32000) = 0x32000
brk(0x33000) = 0x33000
open("/var/lib/dpkg/status", O_RDONLY) = 4
read(4, "Package: vim\nStatus: unknown ok"..., 16384) = 16384
brk(0x44000) = 0x44000
brk(0x45000) = 0x45000
brk(0x46000) = 0x46000
read(4, "lled\nPriority: optional\nSectio"..., 16384) = 16384
brk(0x47000) = 0x47000
brk(0x48000) = 0x48000
read(4, "nknown ok not-installed\nPriorit"..., 16384) = 143
read(4, "", 16384) = 0
close(4) = 0
stat("/var/lib/dpkg/updates/", {st_mode=S_IFDIR|0755, st_size=8192, ...}) = 0
open("/var/lib/dpkg/updates/", O_RDONLY) = 4
fcntl(4, F_SETFD, FD_CLOEXEC) = 0
brk(0x49000) = 0x49000
readdir(4, {d_ino=7740688, d_name="."}) = 1
readdir(4, {d_ino=7740689, d_name=".."}) = 1
readdir(4, 0x48000) = -1 ENOENT (No such file or directory)
close(4) = 0
stat("/etc/locale/C/libc.cat", 0xbffff950) = -1 ENOENT (No such file or directory)
stat("/usr/lib/locale/C/libc.cat", 0xbffff950) = -1 ENOENT (No such file or directory)
stat("/usr/lib/locale/libc/C/usr/share/locale/C/libc.cat", 0xbffff950) = -1 ENOENT (No such file or directory)
stat("/usr/local/share/locale/C/libc.cat", 0xbffff950) = -1 ENOENT (No such file or directory)
write(2, "dpkg: cannot scan updates direct"..., 88dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
) = 88
fcntl(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
_exit(2) = ?
--
Raul
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Raul Miller <rdm@tad.micro.umn.edu>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
In-Reply-To: <m0t7qVm-0006iYC@rdm.legislate.com>
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Thank you for the additional information you have supplied regarding
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Please do not reply to the address at the top of this message,
unless you wish to report a problem with the bug-tracking system.
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Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
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From: Raul Miller <rdm@tad.micro.umn.edu>
To: ian@chiark.chu.cam.ac.uk
Cc: debian-bugs@pixar.com
I had written:
> On a newly created (though slightly fudged) debian system, I'm getting
> the message:
> dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
> when I try and use dpkg (-i or -C, for instance).
You replied:
Here is the relevant bit of code from dpkg:
cdn= scandir(updatefnbuf, &cdlist, &ulist_select, alphasort);
if (cdn == -1) ohshite("cannot scan updates directory `%.255s'",updatefnbuf);
> /var/lib/dpkg/updates/ exists and is empty.
/var/lib/dpkg/updates is usually empty when dpkg starts up, so its
emptiness shouldn't be a problem.
Are you using an odd libc of some kind ?
I was indeed using some kind of mix of the libc from the base disks
and and libs copied off another debian machine. I'd needed to do this
to bring up a debian umsdos system on a laptop. However, at this
point I've re-installed libc-4.6.27-6.deb (using dpkg-deb -e and -X
and manually running the postinst from the DEBIAN directory), and I
still have this problem.
It does look like scandir() is the culprit -- and dpkg-deb -I also
fails. I've written perl programs which call readdir() on this new
system and they seem to work fine, so I have some confidence that this
isn't a umsdos filesystem implementation problem (though I'm not ready
to cross that off my list either).
It would be ideal, for me, if you could re-write dpkg, etc. without
scandir. However, I imagine this is going to have to get fixed in
libc or some such.
I'll see if I can find the source for scandir to expedite this.
Oh well...
--
Raul
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Raul Miller <rdm@tad.micro.umn.edu>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
In-Reply-To: <m0t8CFj-0006k6C@rdm.legislate.com>
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Thank you for the additional information you have supplied regarding
this problem report. It has been forwarded to the developers to
accompany the original report.
If you wish to continue to submit further information on your problem,
please do the same thing again: send it to debian-bugs@pixar.com, ensuring
that the Subject line starts with "Bug#1744" or "Re: Bug#1744" so that
we can identify it as relating to the same problem.
Please do not reply to the address at the top of this message,
unless you wish to report a problem with the bug-tracking system.
Ian Jackson
(maintainer, debian-bugs)
Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
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Date: Wed, 25 Oct 95 17:46 EDT
From: Raul Miller <rdm@tad.micro.umn.edu>
To: debian-bugs@pixar.com
Cc: moth@magenta.com
In-Reply-To: <m0t7oJk-0002bGC@chiark.chu.cam.ac.uk> (message from Ian Jackson
on Tue, 24 Oct 95 18:43 GMT)
Ok, so here's how things look to me at present:
dpkg is failing because of an ENOENT error return from scandir(3).
scandir is getting this error value from readdir().
I do not know enough about libc to easily determine whether the
readdir() used by scandir is readdir(2) or readdir(3). However, I
suspect it's readdir(3).
Something is happening in readdir to result in this error condition
for a loop of the form:
DIR *dp= opendir(dir);
while ((d= readdir(dp)) != 0) {
...
}
This implies that readdir is messed up.
Another possibility is that the underlying file system (umsdos) is
messed up. But why does it only fail in scandir()?
Oddly enough perl's use of readdir (sort readdir(D)) in run-parts
seems to have no problems.
I'm not sure, at the moment, how to proceed with this problem.
scandir() fails but readdir() apparently does not, yet readdir is
apparently at fault.
I'm sure I'll be able to eventually figure things out the hard way --
by taking the code apart one step at a time while figuring out how it
works. I'm hoping somebody will be familiar with this class of
problem and be able to just whip out the answer.
If anyone has any suggestions I'd be glad to hear them.
--
Raul
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Raul Miller <rdm@tad.micro.umn.edu>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
In-Reply-To: <m0t8DeB-0006k6C@rdm.legislate.com>
References: <m0t8DeB-0006k6C@rdm.legislate.com>
Thank you for the additional information you have supplied regarding
this problem report. It has been forwarded to the developers to
accompany the original report.
If you wish to continue to submit further information on your problem,
please do the same thing again: send it to debian-bugs@pixar.com, ensuring
that the Subject line starts with "Bug#1744" or "Re: Bug#1744" so that
we can identify it as relating to the same problem.
Please do not reply to the address at the top of this message,
unless you wish to report a problem with the bug-tracking system.
Ian Jackson
(maintainer, debian-bugs)
Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
Reply-To: Raul Miller <rdm@tad.micro.umn.edu>, debian-bugs@pixar.com
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Date: Wed, 25 Oct 95 18:15 EDT
From: Raul Miller <rdm@tad.micro.umn.edu>
To: debian-bugs@pixar.com
In-Reply-To: <m0t8DeB-0006k6C@rdm.legislate.com> (message from Raul Miller on
Wed, 25 Oct 95 17:46 EDT)
One more bit of information: this problem occurs with libc-4.6.27
--
Raul
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Raul Miller <rdm@tad.micro.umn.edu>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
In-Reply-To: <m0t8E6s-0006k6C@rdm.legislate.com>
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Thank you for the additional information you have supplied regarding
this problem report. It has been forwarded to the developers to
accompany the original report.
If you wish to continue to submit further information on your problem,
please do the same thing again: send it to debian-bugs@pixar.com, ensuring
that the Subject line starts with "Bug#1744" or "Re: Bug#1744" so that
we can identify it as relating to the same problem.
Please do not reply to the address at the top of this message,
unless you wish to report a problem with the bug-tracking system.
Ian Jackson
(maintainer, debian-bugs)
Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
Reply-To: Ian Jackson <ian@chiark.chu.cam.ac.uk>, debian-bugs@pixar.com
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Date: Thu, 26 Oct 95 03:36 GMT
From: Ian Jackson <ian@chiark.chu.cam.ac.uk>
To: Debian bugs submission address <debian-bugs@pixar.com>
In-Reply-To: <m0t8CFj-0006k6C@rdm.legislate.com>
References: <m0t8CFj-0006k6C@rdm.legislate.com>
Raul Miller writes:
> It does look like scandir() is the culprit -- and dpkg-deb -I also
> fails. I've written perl programs which call readdir() on this new
> system and they seem to work fine, so I have some confidence that this
> isn't a umsdos filesystem implementation problem (though I'm not ready
> to cross that off my list either).
>
> It would be ideal, for me, if you could re-write dpkg, etc. without
> scandir. However, I imagine this is going to have to get fixed in
> libc or some such.
There is a rather ropey version of scandir in compat.c, which gets
compiled in automatically if `configure' sees that you don't have
scandir.
Try editing config.h not to define HAVE_SCANDIR and see what happens.
Obviously the libc (or kernel - I think they changed the directory
reading interface) should be fixed eventually.
Ian.
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Ian Jackson <ian@chiark.chu.cam.ac.uk>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
In-Reply-To: <m0t8J7C-0002aNC@chiark.chu.cam.ac.uk>
References: <m0t8J7C-0002aNC@chiark.chu.cam.ac.uk>
Thank you for the additional information you have supplied regarding
this problem report. It has been forwarded to the developers to
accompany the original report.
If you wish to continue to submit further information on your problem,
please do the same thing again: send it to debian-bugs@pixar.com, ensuring
that the Subject line starts with "Bug#1744" or "Re: Bug#1744" so that
we can identify it as relating to the same problem.
Please do not reply to the address at the top of this message,
unless you wish to report a problem with the bug-tracking system.
Ian Jackson
(maintainer, debian-bugs)
Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
Reply-To: Raul Miller <rdm@tad.micro.umn.edu>, debian-bugs@pixar.com
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From: Raul Miller <rdm@tad.micro.umn.edu>
To: debian-bugs@pixar.com
In-Reply-To: <m0t8E95-0007bMC@grus.cus.cam.ac.uk> (iwj10@thor.cam.ac.uk)
This problem definitely occurs in the umsdos file system code.
Further investigation indicates it also occurs in the msdos, nfs, and
smbfs file system code.
I'm reassigning this bug to the image package (or should it be the
source package? modules?).
I'll be submitting a patch in a few hours.
--
Raul
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Raul Miller <rdm@tad.micro.umn.edu>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
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Thank you for the additional information you have supplied regarding
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Ian Jackson
(maintainer, debian-bugs)
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From: Raul Miller <rdm@tad.micro.umn.edu>
To: debian-bugs-request@pixar.com
Subject:
reassign 1744 image
Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
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From: Raul Miller <rdm@tad.micro.umn.edu>
To: Linus.Torvalds@cs.Helsinki.FI
Cc: debian-bugs@pixar.com
There's a problem with the umsdos file system that prevents scandir(3)
from working right -- it gives ENOENT instead of EOF upon successful
termination. This occurs because readdir returns ENOENT upon reaching
the end of the directory. The msdos file system has the same
problem. Here's a patch:
--- linux-1.3.29/fs/msdos/dir.c.dist Thu Oct 26 18:11:01 1995
+++ linux-1.3.29/fs/msdos/dir.c Thu Oct 26 18:12:34 1995
@@ -86,7 +86,7 @@
filp->f_pos = 0;
}
if (filp->f_pos & (sizeof(struct msdos_dir_entry)-1))
- return -ENOENT;
+ return NULL;
bh = NULL;
while ((ino = msdos_get_entry(inode,&filp->f_pos,&bh,&de)) > -1) {
if (!IS_FREE(de->name)
--- linux-1.3.29/fs/umsdos/dir.c.dist Thu Oct 26 18:11:02 1995
+++ linux-1.3.29/fs/umsdos/dir.c Thu Oct 26 18:13:51 1995
@@ -259,7 +259,7 @@
}
/*
Read count directory entries from directory filp
- Return a negative value from linux/errno.h.
+ Return a NULL to indicate end of file
Return > 0 if success (the amount of byte written to dirent)
*/
static int UMSDOS_readdir(
@@ -284,7 +284,7 @@
}
PRINTK (("UMSDOS_readdir out %d count %d pos %Ld\n",ret,count
,filp->f_pos));
- return count == 0 ? -ENOENT : ret;
+ return count == 0 ? NULL : ret;
}
/*
Complete the inode content with info from the EMD file
--
Raul
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Raul Miller <rdm@tad.micro.umn.edu>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
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Thank you for the additional information you have supplied regarding
this problem report. It has been forwarded to the developers to
accompany the original report.
If you wish to continue to submit further information on your problem,
please do the same thing again: send it to debian-bugs@pixar.com, ensuring
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we can identify it as relating to the same problem.
Please do not reply to the address at the top of this message,
unless you wish to report a problem with the bug-tracking system.
Ian Jackson
(maintainer, debian-bugs)
Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
Reply-To: Raul Miller <rdm@tad.micro.umn.edu>, debian-bugs@pixar.com
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From: Raul Miller <rdm@tad.micro.umn.edu>
To: debian-bugs@pixar.com
Turns out smbfs and nfs are clean -- it's only the msdos file systems
which have this problem.
--
Raul
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Raul Miller <rdm@tad.micro.umn.edu>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
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Thank you for the additional information you have supplied regarding
this problem report. It has been forwarded to the developers to
accompany the original report.
If you wish to continue to submit further information on your problem,
please do the same thing again: send it to debian-bugs@pixar.com, ensuring
that the Subject line starts with "Bug#1744" or "Re: Bug#1744" so that
we can identify it as relating to the same problem.
Please do not reply to the address at the top of this message,
unless you wish to report a problem with the bug-tracking system.
Ian Jackson
(maintainer, debian-bugs)
Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
Reply-To: Linus Torvalds <Linus.Torvalds@cs.Helsinki.FI>, debian-bugs@pixar.com
Resent-From: Linus Torvalds <Linus.Torvalds@cs.Helsinki.FI>
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Date: Fri, 27 Oct 1995 08:05:17 +0200
From: Linus Torvalds <Linus.Torvalds@cs.Helsinki.FI>
Message-Id: <199510270605.IAA11683@keos.cs.Helsinki.FI>
In-Reply-To: Raul Miller's message as of Oct 26, 18:24
X-Mailer: Mail User's Shell (7.2.0 10/31/90)
To: Raul Miller <rdm@tad.micro.umn.edu>
Cc: debian-bugs@pixar.com
Raul Miller: "Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory" (Oct 26, 18:24):
> There's a problem with the umsdos file system that prevents scandir(3)
> from working right -- it gives ENOENT instead of EOF upon successful
> termination. This occurs because readdir returns ENOENT upon reaching
> the end of the directory. The msdos file system has the same
> problem. Here's a patch:
>
> --- linux-1.3.29/fs/msdos/dir.c.dist Thu Oct 26 18:11:01 1995
> +++ linux-1.3.29/fs/msdos/dir.c Thu Oct 26 18:12:34 1995
> @@ -86,7 +86,7 @@
> filp->f_pos = 0;
> }
> if (filp->f_pos & (sizeof(struct msdos_dir_entry)-1))
> - return -ENOENT;
> + return NULL;
> bh = NULL;
> while ((ino = msdos_get_entry(inode,&filp->f_pos,&bh,&de)) > -1) {
> if (!IS_FREE(de->name)
The above doesn't look like the right fix: -ENOENT may not be the right
value to return, but the above return value is meant to catch a bogus
file position pointer rather than catch the end of the file. A better
error might be -EINVAL for that case (it means that somebody did a seek
with a bad value at some point).
> --- linux-1.3.29/fs/umsdos/dir.c.dist Thu Oct 26 18:11:02 1995
> +++ linux-1.3.29/fs/umsdos/dir.c Thu Oct 26 18:13:51 1995
> @@ -259,7 +259,7 @@
> }
> /*
> Read count directory entries from directory filp
> - Return a negative value from linux/errno.h.
> + Return a NULL to indicate end of file
> Return > 0 if success (the amount of byte written to dirent)
> */
> static int UMSDOS_readdir(
> @@ -284,7 +284,7 @@
> }
> PRINTK (("UMSDOS_readdir out %d count %d pos %Ld\n",ret,count
> ,filp->f_pos));
> - return count == 0 ? -ENOENT : ret;
> + return count == 0 ? NULL : ret;
> }
> /*
> Complete the inode content with info from the EMD file
How about
return count ? : ret;
instead? At the very least a NULL is definitely wrong, as we're
returning an integer, not a pointer.
Linus
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Linus Torvalds <Linus.Torvalds@cs.Helsinki.FI>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
In-Reply-To: <199510270605.IAA11683@keos.cs.Helsinki.FI>
References: <199510270605.IAA11683@keos.cs.Helsinki.FI>
Thank you for the additional information you have supplied regarding
this problem report. It has been forwarded to the developers to
accompany the original report.
If you wish to continue to submit further information on your problem,
please do the same thing again: send it to debian-bugs@pixar.com, ensuring
that the Subject line starts with "Bug#1744" or "Re: Bug#1744" so that
we can identify it as relating to the same problem.
Please do not reply to the address at the top of this message,
unless you wish to report a problem with the bug-tracking system.
Ian Jackson
(maintainer, debian-bugs)
Message sent to debian-devel@pixar.com:
Subject: Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory
Reply-To: Raul Miller <rdm@tad.micro.umn.edu>, debian-bugs@pixar.com
Resent-From: Raul Miller <rdm@tad.micro.umn.edu>
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Date: Fri, 27 Oct 95 12:17 EDT
From: Raul Miller <rdm@tad.micro.umn.edu>
To: Linus.Torvalds@cs.Helsinki.FI
Cc: debian-bugs@pixar.com
In-Reply-To: <199510270605.IAA11683@keos.cs.Helsinki.FI> (message from Linus
Torvalds on Fri, 27 Oct 1995 08:05:17 +0200)
I (Raul) wrote::
> > --- linux-1.3.29/fs/msdos/dir.c.dist Thu Oct 26 18:11:01 1995
> > +++ linux-1.3.29/fs/msdos/dir.c Thu Oct 26 18:12:34 1995
> > @@ -86,7 +86,7 @@
> > filp->f_pos = 0;
> > }
> > if (filp->f_pos & (sizeof(struct msdos_dir_entry)-1))
> > - return -ENOENT;
> > + return NULL;
> > bh = NULL;
> > while ((ino = msdos_get_entry(inode,&filp->f_pos,&bh,&de)) > -1) {
> > if (!IS_FREE(de->name)
Linus replied:
> The above doesn't look like the right fix: -ENOENT may not be the
> right value to return, but the above return value is meant to catch
> a bogus file position pointer rather than catch the end of the
> file. A better error might be -EINVAL for that case (it means that
> somebody did a seek with a bad value at some point).
I'm sorry, I didn't pay close enough attention.
However, looking at my documentation on readdir, I think this should
be EBADF.
Me:
> > --- linux-1.3.29/fs/umsdos/dir.c.dist Thu Oct 26 18:11:02 1995
> > +++ linux-1.3.29/fs/umsdos/dir.c Thu Oct 26 18:13:51 1995
> > @@ -259,7 +259,7 @@
> > }
> > /*
> > Read count directory entries from directory filp
> > - Return a negative value from linux/errno.h.
> > + Return a NULL to indicate end of file
> > Return > 0 if success (the amount of byte written to dirent)
> > */
> > static int UMSDOS_readdir(
> > @@ -284,7 +284,7 @@
> > }
> > PRINTK (("UMSDOS_readdir out %d count %d pos %Ld\n",ret,count
> > ,filp->f_pos));
> > - return count == 0 ? -ENOENT : ret;
> > + return count == 0 ? NULL : ret;
> > }
> > /*
> > Complete the inode content with info from the EMD file
Linus:
> How about
> return count ? : ret;
> instead? At the very least a NULL is definitely wrong, as we're
> returning an integer, not a pointer.
Oops.
Yes, thanks.
--
Raul
Message sent:
From: iwj10@thor.cam.ac.uk (Ian Jackson)
To: Raul Miller <rdm@tad.micro.umn.edu>
Subject: Bug#1744: Info received (was Bug#1744: dpkg: cannot scan updates directory `/var/lib/dpkg/updates/': No such file or directory)
In-Reply-To: <m0t8rSm-0006k6C@rdm.legislate.com>
References: <m0t8rSm-0006k6C@rdm.legislate.com>
Thank you for the additional information you have supplied regarding
this problem report. It has been forwarded to the developers to
accompany the original report.
If you wish to continue to submit further information on your problem,
please do the same thing again: send it to debian-bugs@pixar.com, ensuring
that the Subject line starts with "Bug#1744" or "Re: Bug#1744" so that
we can identify it as relating to the same problem.
Please do not reply to the address at the top of this message,
unless you wish to report a problem with the bug-tracking system.
Ian Jackson
(maintainer, debian-bugs)
Ian Jackson /
iwj10@thor.cam.ac.uk,
with the debian-bugs tracking mechanism