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SubjectRe: Fw: Compile problems with 2.5.7
Good day,

> >
> > Hi,
> >
> > Sorry to be so long getting back to you. I've tried everything I can
> > think of to reproduce this but haven't been able to.

I'm sorry I didn't get back to you sooner too. I'm in the boarding school
during the week and can use e-mail only at weekends ;-)

> >
> > So could you:
> >
> > 1.) Let me know which version of gcc you're using (cc --version).

[grega@tm-68-65 linux-2.5.7]$ gcc --version
3.0.3

[grega@tm-68-65 linux-2.5.7]$ ld --version
GNU ld 2.10.91
Copyright 2001 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License. This program has absolutely no warranty.
Supported emulations:
elf_i386
i386linux
elf_i386_glibc21


> >
> > 2.) Verify that kernel/acct.c compile line looks like (the path for
> > the -I line will match your machine):
> >
> > gcc -D__KERNEL__ -I/home/rem/views/linux-2.5.7-orig/include -Wall
> > -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
> > -fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2
> > -march=i586 -DKBUILD_BASENAME=acct -c -o kernel/acct.o kernel/acct.c

The path is correct.

> >
> > 3.) Use this compile line (substitute your path for ${YOUR_PATH}):
> >
> > gcc -E -D__KERNEL__ -I${YOUR_PATH}/linux-2.5.7-orig/include -Wall
> > -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
> > -fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2
> > -march=i586 -DKBUILD_BASENAME=acct -c -o kernel/acct.o kernel/acct.c
> >

Not neccessary. See above.

> > 4.) E-mail me the kernel/acct.c and kernel/acct.o (BTW the kernel/acct.o
> > is not really an object file but the output of cpp).

As I have already said, the only patch I use is 0-aliases-c-C7-pre2 by Al
Viro. It makes the kernel compile without NFS support, which I don't need.
The patch follows:

diff -urN C7-pre2/fs/Makefile C7-pre2-current/fs/Makefile
--- C7-pre2/fs/Makefile Fri Mar 15 22:22:35 2002
+++ C7-pre2-current/fs/Makefile Sat Mar 16 04:24:26 2002
@@ -16,12 +16,6 @@
dcache.o inode.o attr.o bad_inode.o file.o iobuf.o dnotify.o \
filesystems.o namespace.o seq_file.o xattr.o libfs.o

-ifeq ($(CONFIG_QUOTA),y)
-obj-y += dquot.o
-else
-obj-y += noquot.o
-endif
-
ifneq ($(CONFIG_NFSD),n)
ifneq ($(CONFIG_NFSD),)
obj-y += nfsctl.o
@@ -84,6 +78,8 @@
obj-y += binfmt_script.o

obj-$(CONFIG_BINFMT_ELF) += binfmt_elf.o
+
+obj-$(CONFIG_QUOTA) += dquot.o

# persistent filesystems
obj-y += $(join $(subdir-y),$(subdir-y:%=/%.o))
diff -urN C7-pre2/fs/dquot.c C7-pre2-current/fs/dquot.c
--- C7-pre2/fs/dquot.c Tue Feb 19 22:33:03 2002
+++ C7-pre2-current/fs/dquot.c Sat Mar 16 04:45:14 2002
@@ -59,6 +59,7 @@
#include <linux/tty.h>
#include <linux/file.h>
#include <linux/slab.h>
+#include <linux/sysctl.h>
#include <linux/smp_lock.h>
#include <linux/init.h>

@@ -1240,9 +1241,22 @@
return ret;
}

+static ctl_table fs_table[] = {
+ {FS_NRDQUOT, "dquot-nr", &nr_dquots, 2*sizeof(int),
+ 0444, NULL, &proc_dointvec},
+ {},
+};
+
+static ctl_table dquot_table[] = {
+ {CTL_FS, "fs", NULL, 0, 0555, fs_table},
+ {},
+};
+
static int __init dquot_init(void)
{
int i;
+
+ register_sysctl_table(dquot_table, 0);

for (i = 0; i < NR_DQHASH; i++)
INIT_LIST_HEAD(dquot_hash + i);
diff -urN C7-pre2/fs/noquot.c C7-pre2-current/fs/noquot.c
--- C7-pre2/fs/noquot.c Fri May 12 14:21:20 2000
+++ C7-pre2-current/fs/noquot.c Wed Dec 31 19:00:00 1969
@@ -1,15 +0,0 @@
-/* noquot.c: Quota stubs necessary for when quotas are not
- * compiled into the kernel.
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-
-int nr_dquots, nr_free_dquots;
-int max_dquots;
-
-asmlinkage long sys_quotactl(int cmd, const char *special, int id, caddr_t addr)
-{
- return(-ENOSYS);
-}
diff -urN C7-pre2/include/linux/quota.h C7-pre2-current/include/linux/quota.h
--- C7-pre2/include/linux/quota.h Mon Jan 14 23:13:52 2002
+++ C7-pre2-current/include/linux/quota.h Sat Mar 16 04:23:01 2002
@@ -144,7 +144,6 @@

#ifdef __KERNEL__

-extern int nr_dquots, nr_free_dquots;
extern int dquot_root_squash;

#define NR_DQHASH 43 /* Just an arbitrary number */
diff -urN C7-pre2/kernel/Makefile C7-pre2-current/kernel/Makefile
--- C7-pre2/kernel/Makefile Fri Mar 15 22:22:40 2002
+++ C7-pre2-current/kernel/Makefile Sat Mar 16 05:43:10 2002
@@ -20,6 +20,7 @@
obj-$(CONFIG_UID16) += uid16.o
obj-$(CONFIG_MODULES) += ksyms.o
obj-$(CONFIG_PM) += pm.o
+obj-$(CONFIG_CONFIG_BSD_PROCESS_ACCT) += acct.o

ifneq ($(CONFIG_IA64),y)
# According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is
diff -urN C7-pre2/kernel/acct.c C7-pre2-current/kernel/acct.c
--- C7-pre2/kernel/acct.c Fri Mar 15 22:22:40 2002
+++ C7-pre2-current/kernel/acct.c Sat Mar 16 05:47:40 2002
@@ -44,17 +44,11 @@
*/

#include <linux/config.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-
-#ifdef CONFIG_BSD_PROCESS_ACCT
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/acct.h>
-#include <linux/smp_lock.h>
#include <linux/file.h>
#include <linux/tty.h>
-
#include <asm/uaccess.h>

/*
@@ -397,15 +391,3 @@
spin_unlock(&acct_globals.lock);
return 0;
}
-
-#else
-/*
- * Dummy system call when BSD process accounting is not configured
- * into the kernel.
- */
-
-asmlinkage long sys_acct(const char * filename)
-{
- return -ENOSYS;
-}
-#endif
diff -urN C7-pre2/kernel/sys.c C7-pre2-current/kernel/sys.c
--- C7-pre2/kernel/sys.c Fri Mar 15 22:22:40 2002
+++ C7-pre2-current/kernel/sys.c Sat Mar 16 05:42:26 2002
@@ -173,6 +173,12 @@
return -ENOSYS;
}

+/* "Conditional" syscalls */
+
+asmlinkage long sys_nfsservctl(void) __attribute__ ((weak, alias ("sys_ni_syscall")));
+asmlinkage long sys_quotactl(void) __attribute__ ((weak, alias ("sys_ni_syscall")));
+asmlinkage long sys_acct(void) __attribute__ ((weak, alias ("sys_ni_syscall")));
+
static int proc_sel(struct task_struct *p, int which, int who)
{
if(p->pid)
diff -urN C7-pre2/kernel/sysctl.c C7-pre2-current/kernel/sysctl.c
--- C7-pre2/kernel/sysctl.c Tue Feb 19 22:33:08 2002
+++ C7-pre2-current/kernel/sysctl.c Sat Mar 16 04:22:45 2002
@@ -284,8 +284,6 @@
0444, NULL, &proc_dointvec},
{FS_MAXFILE, "file-max", &files_stat.max_files, sizeof(int),
0644, NULL, &proc_dointvec},
- {FS_NRDQUOT, "dquot-nr", &nr_dquots, 2*sizeof(int),
- 0444, NULL, &proc_dointvec},
{FS_DENTRY, "dentry-state", &dentry_stat, 6*sizeof(int),
0444, NULL, &proc_dointvec},
{FS_OVERFLOWUID, "overflowuid", &fs_overflowuid, sizeof(int), 0644, NULL,
As you can see it touches the acct.c file. I'm not a hacker, so I don't know what it does.

Best Regards,

Grega Fajdiga
-
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