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Subject[PATCH] POSIX-hostname up to 255 characters

This patch is against 2.6.17-rc5, for review/comments, please.
It won't apply to -mm since Andrew has merged the uts-namespace patches.
I'll see about merging it with those patches next.
---
From: Randy Dunlap <rdunlap@xenotime.net>

Implement POSIX-defined length for 'hostname' so that hostnames
can be longer than 64 characters (max. 255 characters plus
terminating NULL character).

Adds sys_gethostname_long() and sys_sethostname_long().
Tested on i386 and x86_64.
Builds on powerpc(64).
Test program is at http://www.xenotime.net/linux/src/hostnamelong.c .

Consolidates many open-coded copiers of system_utsname into
functions in lib/utsname.c::put_oldold_uname(), put_old_uname(),
put_new_uname(). and put_long_uname().

gethostname:
http://www.opengroup.org/onlinepubs/009695399/functions/gethostname.html
sysconf:
http://www.opengroup.org/onlinepubs/009695399/functions/sysconf.html
unistd.h:
http://www.opengroup.org/onlinepubs/009695399/basedefs/unistd.h.html
limits.h:
http://www.opengroup.org/onlinepubs/009695399/basedefs/limits.h.html


Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
---
arch/i386/kernel/sys_i386.c | 37 +------
arch/i386/kernel/syscall_table.S | 3
arch/m32r/kernel/sys_m32r.c | 12 --
arch/mips/kernel/linux32.c | 4
arch/mips/kernel/syscall.c | 25 -----
arch/powerpc/kernel/syscalls.c | 37 +------
arch/sh/kernel/sys_sh.c | 11 --
arch/sh64/kernel/sys_sh64.c | 11 --
arch/um/kernel/syscall_kern.c | 9 -
arch/x86_64/ia32/ia32entry.S | 4
arch/x86_64/ia32/sys_ia32.c | 39 +-------
arch/x86_64/kernel/sys_x86_64.c | 8 -
arch/xtensa/kernel/syscalls.c | 8 -
drivers/char/random.c | 2
include/asm-i386/unistd.h | 6 +
include/asm-m32r/unistd.h | 1
include/asm-mips/unistd.h | 3
include/asm-powerpc/unistd.h | 2
include/asm-sh/unistd.h | 1
include/asm-sh64/unistd.h | 1
include/asm-um/unistd.h | 2
include/asm-x86_64/unistd.h | 8 +
include/asm-xtensa/unistd.h | 1
include/linux/syscalls.h | 2
include/linux/utsname.h | 21 ++++
init/version.c | 3
kernel/power/power.h | 2
kernel/sys.c | 42 ++++++++
lib/Makefile | 2
lib/utsname.c | 188 +++++++++++++++++++++++++++++++++++++++
net/ipv4/ipconfig.c | 3
31 files changed, 334 insertions(+), 164 deletions(-)
--- linux-2617-rc5.orig/include/asm-i386/unistd.h
+++ linux-2617-rc5/include/asm-i386/unistd.h
@@ -322,8 +322,10 @@
#define __NR_sync_file_range 314
#define __NR_tee 315
#define __NR_vmsplice 316
+#define __NR_gethostname_long 317
+#define __NR_sethostname_long 318

-#define NR_syscalls 317
+#define NR_syscalls 319

/*
* user-visible error numbers are in the range -1 - -128: see
@@ -429,6 +431,8 @@ __syscall_return(type,__res); \
#define __ARCH_WANT_STAT64
#define __ARCH_WANT_SYS_ALARM
#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_OLD_UNAME
+#define __ARCH_WANT_OLDOLD_UNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_SGETMASK
#define __ARCH_WANT_SYS_SIGNAL
--- linux-2617-rc5.orig/include/linux/utsname.h
+++ linux-2617-rc5/include/linux/utsname.h
@@ -30,7 +30,26 @@ struct new_utsname {
char domainname[65];
};

-extern struct new_utsname system_utsname;
+/* for (POSIX) IEEE Std. 1003.1, 2004 edition */
+#define __POSIX_HOST_NAME_MAX 255 /* not including terminating NUL char */

+struct long_utsname {
+ char sysname[__NEW_UTS_LEN + 1]; /* O/S name */
+ char nodename[__POSIX_HOST_NAME_MAX + 1]; /* hostname, but keep field
+ * name same as other structs here */
+ char release[__NEW_UTS_LEN + 1]; /* O/S release level */
+ char version[__NEW_UTS_LEN + 1]; /* version level of release */
+ char machine[__NEW_UTS_LEN + 1]; /* machine hardware type */
+ char domainname[__NEW_UTS_LEN + 1];
+};
+
+extern struct long_utsname system_utsname;
extern struct rw_semaphore uts_sem;
+
+int put_oldold_uname(struct oldold_utsname __user *name);
+int __put_oldold_uname(struct oldold_utsname __user *name);
+int put_old_uname(struct old_utsname __user *name);
+int __put_old_uname(struct old_utsname __user *name);
+int put_new_uname(struct new_utsname __user *name);
+int __put_new_uname(struct new_utsname __user *name);
#endif
--- linux-2617-rc5.orig/include/linux/syscalls.h
+++ linux-2617-rc5/include/linux/syscalls.h
@@ -432,7 +432,9 @@ asmlinkage long sys_epoll_ctl(int epfd,
asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
int maxevents, int timeout);
asmlinkage long sys_gethostname(char __user *name, int len);
+asmlinkage long sys_gethostname_long(char __user *name, int len);
asmlinkage long sys_sethostname(char __user *name, int len);
+asmlinkage long sys_sethostname_long(char __user *name, int len);
asmlinkage long sys_setdomainname(char __user *name, int len);
asmlinkage long sys_newuname(struct new_utsname __user *name);

--- linux-2617-rc5.orig/init/version.c
+++ linux-2617-rc5/init/version.c
@@ -17,7 +17,7 @@

int version_string(LINUX_VERSION_CODE);

-struct new_utsname system_utsname = {
+struct long_utsname system_utsname = {
.sysname = UTS_SYSNAME,
.nodename = UTS_NODENAME,
.release = UTS_RELEASE,
@@ -25,7 +25,6 @@ struct new_utsname system_utsname = {
.machine = UTS_MACHINE,
.domainname = UTS_DOMAINNAME,
};
-
EXPORT_SYMBOL(system_utsname);

const char linux_banner[] =
--- linux-2617-rc5.orig/kernel/sys.c
+++ linux-2617-rc5/kernel/sys.c
@@ -1666,14 +1666,13 @@ DECLARE_RWSEM(uts_sem);

EXPORT_SYMBOL(uts_sem);

+/* TBD: may also need a sys_uname_long() */
asmlinkage long sys_newuname(struct new_utsname __user * name)
{
int errno = 0;

- down_read(&uts_sem);
- if (copy_to_user(name,&system_utsname,sizeof *name))
+ if (put_new_uname(name))
errno = -EFAULT;
- up_read(&uts_sem);
return errno;
}

@@ -1697,6 +1696,26 @@ asmlinkage long sys_sethostname(char __u
return errno;
}

+asmlinkage long sys_sethostname_long(char __user *name, int len)
+{
+ int errno;
+ char tmp[__POSIX_HOST_NAME_MAX + 1];
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+ if (len < 0 || len > __POSIX_HOST_NAME_MAX)
+ return -EINVAL;
+ down_write(&uts_sem);
+ errno = -EFAULT;
+ if (!copy_from_user(tmp, name, len)) {
+ memcpy(system_utsname.nodename, tmp, len);
+ system_utsname.nodename[len] = 0;
+ errno = 0;
+ }
+ up_write(&uts_sem);
+ return errno;
+}
+
#ifdef __ARCH_WANT_SYS_GETHOSTNAME

asmlinkage long sys_gethostname(char __user *name, int len)
@@ -1718,6 +1737,23 @@ asmlinkage long sys_gethostname(char __u

#endif

+asmlinkage long sys_gethostname_long(char __user *name, int len)
+{
+ int i, errno;
+
+ if (len < 0)
+ return -EINVAL;
+ down_read(&uts_sem);
+ i = 1 + strlen(system_utsname.nodename);
+ if (i > len)
+ i = len;
+ errno = 0;
+ if (copy_to_user(name, system_utsname.nodename, i))
+ errno = -EFAULT;
+ up_read(&uts_sem);
+ return errno;
+}
+
/*
* Only setdomainname; getdomainname can be implemented by calling
* uname()
--- linux-2617-rc5.orig/kernel/power/power.h
+++ linux-2617-rc5/kernel/power/power.h
@@ -2,7 +2,7 @@
#include <linux/utsname.h>

struct swsusp_info {
- struct new_utsname uts;
+ struct long_utsname uts;
u32 version_code;
unsigned long num_physpages;
int cpus;
--- linux-2617-rc5.orig/net/ipv4/ipconfig.c
+++ linux-2617-rc5/net/ipv4/ipconfig.c
@@ -806,7 +806,8 @@ static void __init ic_do_bootp_ext(u8 *e
}
break;
case 12: /* Host name */
- ic_bootp_string(system_utsname.nodename, ext+1, *ext, __NEW_UTS_LEN);
+ ic_bootp_string(system_utsname.nodename, ext+1, *ext,
+ sizeof(system_utsname.nodename));
ic_host_name_set = 1;
break;
case 15: /* Domain name (DNS) */
--- linux-2617-rc5.orig/arch/mips/kernel/syscall.c
+++ linux-2617-rc5/arch/mips/kernel/syscall.c
@@ -232,9 +232,9 @@ out:
*/
asmlinkage int sys_uname(struct old_utsname __user * name)
{
- if (name && !copy_to_user(name, &system_utsname, sizeof (*name)))
- return 0;
- return -EFAULT;
+ if (put_old_uname(name))
+ return -EFAULT;
+ return 0;
}

/*
@@ -242,24 +242,7 @@ asmlinkage int sys_uname(struct old_utsn
*/
asmlinkage int sys_olduname(struct oldold_utsname __user * name)
{
- int error;
-
- if (!name)
- return -EFAULT;
- if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
- return -EFAULT;
-
- error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
- error -= __put_user(0,name->sysname+__OLD_UTS_LEN);
- error -= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
- error -= __put_user(0,name->nodename+__OLD_UTS_LEN);
- error -= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
- error -= __put_user(0,name->release+__OLD_UTS_LEN);
- error -= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
- error -= __put_user(0,name->version+__OLD_UTS_LEN);
- error -= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN);
- error = __put_user(0,name->machine+__OLD_UTS_LEN);
- error = error ? -EFAULT : 0;
+ int error = put_oldold_uname(name);

return error;
}
--- /dev/null
+++ linux-2617-rc5/lib/utsname.c
@@ -0,0 +1,188 @@
+#include <linux/compiler.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/rwsem.h>
+#include <linux/utsname.h>
+#include <asm/uaccess.h>
+
+#ifdef __ARCH_WANT_OLDOLD_UNAME
+
+int __put_oldold_uname(struct oldold_utsname __user *name)
+{
+ int error;
+
+ if (!name)
+ return -EFAULT;
+ if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
+ return -EFAULT;
+
+ error = __copy_to_user(&name->sysname, &system_utsname.sysname,
+ __OLD_UTS_LEN);
+ error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
+ error |= __copy_to_user(&name->nodename, &system_utsname.nodename,
+ __OLD_UTS_LEN);
+ error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
+ error |= __copy_to_user(&name->release, &system_utsname.release,
+ __OLD_UTS_LEN);
+ error |= __put_user(0, name->release + __OLD_UTS_LEN);
+ error |= __copy_to_user(&name->version, &system_utsname.version,
+ __OLD_UTS_LEN);
+ error |= __put_user(0, name->version + __OLD_UTS_LEN);
+ error |= __copy_to_user(&name->machine, &system_utsname.machine,
+ __OLD_UTS_LEN);
+ error |= __put_user(0, name->machine + __OLD_UTS_LEN);
+
+ return error;
+}
+EXPORT_SYMBOL(__put_oldold_uname);
+
+int put_oldold_uname(struct oldold_utsname __user *name)
+{
+ int error;
+
+ down_read(&uts_sem);
+ error = __put_oldold_uname(name);
+ up_read(&uts_sem);
+
+ error = error ? -EFAULT : 0;
+ return error;
+}
+EXPORT_SYMBOL(put_oldold_uname);
+
+#endif
+
+#ifdef __ARCH_WANT_OLD_UNAME
+
+int __put_old_uname(struct old_utsname __user *name)
+{
+ int error;
+
+ if (!name)
+ return -EFAULT;
+ if (!access_ok(VERIFY_WRITE, name, sizeof(struct old_utsname)))
+ return -EFAULT;
+
+ error = __copy_to_user(&name->sysname, &system_utsname.sysname,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->sysname + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->nodename, &system_utsname.nodename,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->nodename + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->release, &system_utsname.release,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->release + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->version, &system_utsname.version,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->version + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->machine, &system_utsname.machine,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->machine + __NEW_UTS_LEN);
+
+ return error;
+}
+EXPORT_SYMBOL(__put_old_uname);
+
+int put_old_uname(struct old_utsname __user *name)
+{
+ int error;
+
+ down_read(&uts_sem);
+ error = __put_old_uname(name);
+ up_read(&uts_sem);
+
+ error = error ? -EFAULT : 0;
+ return error;
+}
+EXPORT_SYMBOL(put_old_uname);
+
+#endif
+
+int __put_new_uname(struct new_utsname __user *name)
+{
+ int error;
+
+ if (!name)
+ return -EFAULT;
+ if (!access_ok(VERIFY_WRITE, name, sizeof(struct new_utsname)))
+ return -EFAULT;
+
+ error = __copy_to_user(&name->sysname, &system_utsname.sysname,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->sysname + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->nodename, &system_utsname.nodename,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->nodename + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->release, &system_utsname.release,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->release + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->version, &system_utsname.version,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->version + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->machine, &system_utsname.machine,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->machine + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->domainname, &system_utsname.domainname,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->domainname + __NEW_UTS_LEN);
+
+ return error;
+}
+EXPORT_SYMBOL(__put_new_uname);
+
+int put_new_uname(struct new_utsname __user *name)
+{
+ int error;
+
+ down_read(&uts_sem);
+ error = __put_new_uname(name);
+ up_read(&uts_sem);
+
+ error = error ? -EFAULT : 0;
+ return error;
+}
+EXPORT_SYMBOL(put_new_uname);
+
+int __put_long_uname(struct long_utsname __user *name)
+{
+ int error;
+
+ if (!name)
+ return -EFAULT;
+ if (!access_ok(VERIFY_WRITE, name, sizeof(struct new_utsname)))
+ return -EFAULT;
+
+ error = __copy_to_user(&name->sysname, &system_utsname.sysname,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->sysname + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->nodename, &system_utsname.nodename,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->nodename + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->release, &system_utsname.release,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->release + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->version, &system_utsname.version,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->version + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->machine, &system_utsname.machine,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->machine + __NEW_UTS_LEN);
+ error |= __copy_to_user(&name->domainname, &system_utsname.domainname,
+ __NEW_UTS_LEN);
+ error |= __put_user(0, name->domainname + __NEW_UTS_LEN);
+
+ return error;
+}
+EXPORT_SYMBOL(__put_long_uname);
+
+int put_long_uname(struct long_utsname __user *name)
+{
+ int error;
+
+ down_read(&uts_sem);
+ error = __put_long_uname(name);
+ up_read(&uts_sem);
+
+ error = error ? -EFAULT : 0;
+ return error;
+}
+EXPORT_SYMBOL(put_long_uname);
--- linux-2617-rc5.orig/arch/powerpc/kernel/syscalls.c
+++ linux-2617-rc5/arch/powerpc/kernel/syscalls.c
@@ -255,14 +255,13 @@ static inline int override_machine(char
return 0;
}

-long ppc_newuname(struct new_utsname __user * name)
+long ppc_newuname(struct new_utsname __user *name)
{
- int err = 0;
+ int err;

- down_read(&uts_sem);
- if (copy_to_user(name, &system_utsname, sizeof(*name)))
+ err = put_new_uname(name);
+ if (err)
err = -EFAULT;
- up_read(&uts_sem);
if (!err)
err = override_machine(name->machine);
return err;
@@ -270,12 +269,10 @@ long ppc_newuname(struct new_utsname __u

int sys_uname(struct old_utsname __user *name)
{
- int err = 0;
+ int err;

- down_read(&uts_sem);
- if (copy_to_user(name, &system_utsname, sizeof(*name)))
+ err = put_old_uname(name);
err = -EFAULT;
- up_read(&uts_sem);
if (!err)
err = override_machine(name->machine);
return err;
@@ -285,28 +282,10 @@ int sys_olduname(struct oldold_utsname _
{
int error;

- if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
- return -EFAULT;
-
- down_read(&uts_sem);
- error = __copy_to_user(&name->sysname, &system_utsname.sysname,
- __OLD_UTS_LEN);
- error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
- error |= __copy_to_user(&name->nodename, &system_utsname.nodename,
- __OLD_UTS_LEN);
- error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
- error |= __copy_to_user(&name->release, &system_utsname.release,
- __OLD_UTS_LEN);
- error |= __put_user(0, name->release + __OLD_UTS_LEN);
- error |= __copy_to_user(&name->version, &system_utsname.version,
- __OLD_UTS_LEN);
- error |= __put_user(0, name->version + __OLD_UTS_LEN);
- error |= __copy_to_user(&name->machine, &system_utsname.machine,
- __OLD_UTS_LEN);
+ error = put_oldold_uname(name);
error |= override_machine(name->machine);
- up_read(&uts_sem);

- return error? -EFAULT: 0;
+ return error ? -EFAULT : 0;
}

long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
--- linux-2617-rc5.orig/include/asm-mips/unistd.h
+++ linux-2617-rc5/include/asm-mips/unistd.h
@@ -1176,6 +1176,9 @@ type name (atype a,btype b,ctype c,dtype
#define __ARCH_WANT_OLD_READDIR
#define __ARCH_WANT_SYS_ALARM
#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_OLDOLD_UNAME
+#define __ARCH_WANT_OLD_UNAME
+#define __ARCH_WANT_NEW_UNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_SGETMASK
#define __ARCH_WANT_SYS_UTIME
--- linux-2617-rc5.orig/include/asm-powerpc/unistd.h
+++ linux-2617-rc5/include/asm-powerpc/unistd.h
@@ -454,6 +454,8 @@ type name(type1 arg1, type2 arg2, type3
#define __ARCH_WANT_STAT64
#define __ARCH_WANT_SYS_ALARM
#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_OLDOLD_UNAME
+#define __ARCH_WANT_NEW_UNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_SGETMASK
#define __ARCH_WANT_SYS_SIGNAL
--- linux-2617-rc5.orig/arch/mips/kernel/linux32.c
+++ linux-2617-rc5/arch/mips/kernel/linux32.c
@@ -1039,10 +1039,8 @@ asmlinkage long sys32_newuname(struct ne
{
int ret = 0;

- down_read(&uts_sem);
- if (copy_to_user(name,&system_utsname,sizeof *name))
+ if (put_new_uname(name))
ret = -EFAULT;
- up_read(&uts_sem);

if (current->personality == PER_LINUX32 && !ret)
if (copy_to_user(name->machine, "mips\0\0\0", 8))
--- linux-2617-rc5.orig/lib/Makefile
+++ linux-2617-rc5/lib/Makefile
@@ -5,7 +5,7 @@
lib-y := errno.o ctype.o string.o vsprintf.o cmdline.o \
bust_spinlocks.o rbtree.o radix-tree.o dump_stack.o \
idr.o div64.o int_sqrt.o bitmap.o extable.o prio_tree.o \
- sha1.o
+ sha1.o utsname.o

lib-$(CONFIG_SMP) += cpumask.o

--- linux-2617-rc5.orig/include/asm-m32r/unistd.h
+++ linux-2617-rc5/include/asm-m32r/unistd.h
@@ -410,6 +410,7 @@ __syscall_return(type,__res); \
#define __ARCH_WANT_STAT64
#define __ARCH_WANT_SYS_ALARM
#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_OLD_UNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_TIME
#define __ARCH_WANT_SYS_UTIME
--- linux-2617-rc5.orig/arch/m32r/kernel/sys_m32r.c
+++ linux-2617-rc5/arch/m32r/kernel/sys_m32r.c
@@ -200,15 +200,11 @@ asmlinkage int sys_ipc(uint call, int fi
}
}

-asmlinkage int sys_uname(struct old_utsname * name)
+asmlinkage int sys_uname(struct old_utsname *name)
{
- int err;
- if (!name)
- return -EFAULT;
- down_read(&uts_sem);
- err=copy_to_user(name, &system_utsname, sizeof (*name));
- up_read(&uts_sem);
- return err?-EFAULT:0;
+ int err = put_old_uname(name);
+
+ return err ? -EFAULT : 0;
}

asmlinkage int sys_cacheflush(void *addr, int bytes, int cache)
--- linux-2617-rc5.orig/arch/xtensa/kernel/syscalls.c
+++ linux-2617-rc5/arch/xtensa/kernel/syscalls.c
@@ -127,11 +127,11 @@ out:
return error;
}

-int sys_uname(struct old_utsname * name)
+int sys_uname(struct old_utsname *name)
{
- if (name && !copy_to_user(name, &system_utsname, sizeof (*name)))
- return 0;
- return -EFAULT;
+ if (put_old_uname(name))
+ return -EFAULT;
+ return 0;
}

/*
--- linux-2617-rc5.orig/include/asm-xtensa/unistd.h
+++ linux-2617-rc5/include/asm-xtensa/unistd.h
@@ -434,6 +434,7 @@ static __inline__ _syscall3(int,execve,c
#define __ARCH_WANT_SYS_UTIME
#define __ARCH_WANT_SYS_LLSEEK
#define __ARCH_WANT_SYS_RT_SIGACTION
+#define __ARCH_WANT_OLD_UNAME
#endif

#endif /* _XTENSA_UNISTD_H */
--- linux-2617-rc5.orig/arch/um/kernel/syscall_kern.c
+++ linux-2617-rc5/arch/um/kernel/syscall_kern.c
@@ -107,12 +107,9 @@ long sys_pipe(unsigned long __user * fil
long sys_uname(struct old_utsname __user * name)
{
long err;
- if (!name)
- return -EFAULT;
- down_read(&uts_sem);
- err=copy_to_user(name, &system_utsname, sizeof (*name));
- up_read(&uts_sem);
- return err?-EFAULT:0;
+
+ err = put_old_uname(name);
+ return err ? -EFAULT : 0;
}

long sys_olduname(struct oldold_utsname __user * name)
--- linux-2617-rc5.orig/include/asm-um/unistd.h
+++ linux-2617-rc5/include/asm-um/unistd.h
@@ -18,6 +18,8 @@ extern int um_execve(const char *file, c
#define __ARCH_WANT_OLD_READDIR
#define __ARCH_WANT_SYS_ALARM
#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_OLD_UNAME
+#define __ARCH_WANT_NEW_UNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_SGETMASK
#define __ARCH_WANT_SYS_SIGNAL
--- linux-2617-rc5.orig/include/asm-sh/unistd.h
+++ linux-2617-rc5/include/asm-sh/unistd.h
@@ -427,6 +427,7 @@ __syscall_return(type,__sc0); \
#define __ARCH_WANT_STAT64
#define __ARCH_WANT_SYS_ALARM
#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_OLD_UNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_SGETMASK
#define __ARCH_WANT_SYS_SIGNAL
--- linux-2617-rc5.orig/include/asm-sh64/unistd.h
+++ linux-2617-rc5/include/asm-sh64/unistd.h
@@ -493,6 +493,7 @@ __syscall_return(type,__sc0);
#define __ARCH_WANT_STAT64
#define __ARCH_WANT_SYS_ALARM
#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_OLD_UNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_SGETMASK
#define __ARCH_WANT_SYS_SIGNAL
--- linux-2617-rc5.orig/arch/sh/kernel/sys_sh.c
+++ linux-2617-rc5/arch/sh/kernel/sys_sh.c
@@ -261,15 +261,12 @@ asmlinkage int sys_ipc(uint call, int fi
return -EINVAL;
}

-asmlinkage int sys_uname(struct old_utsname * name)
+asmlinkage int sys_uname(struct old_utsname *name)
{
int err;
- if (!name)
- return -EFAULT;
- down_read(&uts_sem);
- err=copy_to_user(name, &system_utsname, sizeof (*name));
- up_read(&uts_sem);
- return err?-EFAULT:0;
+
+ err = put_old_uname(name);
+ return err ? -EFAULT : 0;
}

asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char * buf,
--- linux-2617-rc5.orig/arch/sh64/kernel/sys_sh64.c
+++ linux-2617-rc5/arch/sh64/kernel/sys_sh64.c
@@ -273,13 +273,10 @@ asmlinkage int sys_ipc(uint call, int fi
return -EINVAL;
}

-asmlinkage int sys_uname(struct old_utsname * name)
+asmlinkage int sys_uname(struct old_utsname *name)
{
int err;
- if (!name)
- return -EFAULT;
- down_read(&uts_sem);
- err=copy_to_user(name, &system_utsname, sizeof (*name));
- up_read(&uts_sem);
- return err?-EFAULT:0;
+
+ err = put_old_uname(name);
+ return err ? -EFAULT : 0;
}
--- linux-2617-rc5.orig/arch/x86_64/kernel/sys_x86_64.c
+++ linux-2617-rc5/arch/x86_64/kernel/sys_x86_64.c
@@ -144,12 +144,10 @@ full_search:
}
}

-asmlinkage long sys_uname(struct new_utsname __user * name)
+asmlinkage long sys_uname(struct new_utsname __user *name)
{
- int err;
- down_read(&uts_sem);
- err = copy_to_user(name, &system_utsname, sizeof (*name));
- up_read(&uts_sem);
+ int err = put_new_uname(name);
+
if (personality(current->personality) == PER_LINUX32)
err |= copy_to_user(&name->machine, "i686", 5);
return err ? -EFAULT : 0;
--- linux-2617-rc5.orig/include/asm-x86_64/unistd.h
+++ linux-2617-rc5/include/asm-x86_64/unistd.h
@@ -617,8 +617,12 @@ __SYSCALL(__NR_tee, sys_tee)
__SYSCALL(__NR_sync_file_range, sys_sync_file_range)
#define __NR_vmsplice 278
__SYSCALL(__NR_vmsplice, sys_vmsplice)
+#define __NR_gethostname_long 279
+__SYSCALL(__NR_gethostname_long, sys_gethostname_long)
+#define __NR_sethostname_long 280
+__SYSCALL(__NR_sethostname_long, sys_sethostname_long)

-#define __NR_syscall_max __NR_vmsplice
+#define __NR_syscall_max __NR_sethostname_long

#ifndef __NO_STUBS

@@ -640,6 +644,8 @@ do { \
#define __ARCH_WANT_OLD_STAT
#define __ARCH_WANT_SYS_ALARM
#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_OLDOLD_UNAME
+#define __ARCH_WANT_NEW_UNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_SGETMASK
#define __ARCH_WANT_SYS_SIGNAL
--- linux-2617-rc5.orig/arch/x86_64/ia32/sys_ia32.c
+++ linux-2617-rc5/arch/x86_64/ia32/sys_ia32.c
@@ -790,38 +790,17 @@ asmlinkage long sys32_mmap2(unsigned lon
return error;
}

-asmlinkage long sys32_olduname(struct oldold_utsname __user * name)
+asmlinkage long sys32_olduname(struct oldold_utsname __user *name)
{
- int error;
+ int error = put_oldold_uname(name);
+ char *arch = "x86_64";

- if (!name)
- return -EFAULT;
- if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
- return -EFAULT;
-
- down_read(&uts_sem);
-
- error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
- __put_user(0,name->sysname+__OLD_UTS_LEN);
- __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
- __put_user(0,name->nodename+__OLD_UTS_LEN);
- __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
- __put_user(0,name->release+__OLD_UTS_LEN);
- __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
- __put_user(0,name->version+__OLD_UTS_LEN);
- {
- char *arch = "x86_64";
- if (personality(current->personality) == PER_LINUX32)
- arch = "i686";
-
- __copy_to_user(&name->machine,arch,strlen(arch)+1);
- }
-
- up_read(&uts_sem);
-
- error = error ? -EFAULT : 0;
-
- return error;
+ if (personality(current->personality) == PER_LINUX32)
+ arch = "i686";
+ __copy_to_user(&name->machine, arch, strlen(arch)+1);
+
+ error = error ? -EFAULT : 0;
+ return error;
}

long sys32_uname(struct old_utsname __user * name)
--- linux-2617-rc5.orig/arch/i386/kernel/sys_i386.c
+++ linux-2617-rc5/arch/i386/kernel/sys_i386.c
@@ -204,42 +204,17 @@ asmlinkage int sys_ipc (uint call, int f
/*
* Old cruft
*/
-asmlinkage int sys_uname(struct old_utsname __user * name)
+asmlinkage int sys_uname(struct old_utsname __user *name)
{
- int err;
- if (!name)
- return -EFAULT;
- down_read(&uts_sem);
- err=copy_to_user(name, &system_utsname, sizeof (*name));
- up_read(&uts_sem);
- return err?-EFAULT:0;
+ int err = put_old_uname(name);
+
+ return err ? -EFAULT : 0;
}

-asmlinkage int sys_olduname(struct oldold_utsname __user * name)
+asmlinkage int sys_olduname(struct oldold_utsname __user *name)
{
- int error;
-
- if (!name)
- return -EFAULT;
- if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
- return -EFAULT;
-
- down_read(&uts_sem);
-
- error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
- error |= __put_user(0,name->sysname+__OLD_UTS_LEN);
- error |= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
- error |= __put_user(0,name->nodename+__OLD_UTS_LEN);
- error |= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
- error |= __put_user(0,name->release+__OLD_UTS_LEN);
- error |= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
- error |= __put_user(0,name->version+__OLD_UTS_LEN);
- error |= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN);
- error |= __put_user(0,name->machine+__OLD_UTS_LEN);
-
- up_read(&uts_sem);
+ int error = put_oldold_uname(name);

error = error ? -EFAULT : 0;
-
return error;
}
--- linux-2617-rc5.orig/drivers/char/random.c
+++ linux-2617-rc5/drivers/char/random.c
@@ -223,7 +223,6 @@
* Eastlake, Steve Crocker, and Jeff Schiller.
*/

-#include <linux/utsname.h>
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
@@ -240,6 +239,7 @@
#include <linux/spinlock.h>
#include <linux/percpu.h>
#include <linux/cryptohash.h>
+#include <linux/utsname.h>

#include <asm/processor.h>
#include <asm/uaccess.h>
--- linux-2617-rc5.orig/arch/i386/kernel/syscall_table.S
+++ linux-2617-rc5/arch/i386/kernel/syscall_table.S
@@ -315,3 +315,6 @@ ENTRY(sys_call_table)
.long sys_splice
.long sys_sync_file_range
.long sys_tee /* 315 */
+ .long sys_ni_syscall /* vmsplice */
+ .long sys_gethostname_long
+ .long sys_sethostname_long
--- linux-2617-rc5.orig/arch/x86_64/ia32/ia32entry.S
+++ linux-2617-rc5/arch/x86_64/ia32/ia32entry.S
@@ -694,6 +694,8 @@ ia32_sys_call_table:
.quad compat_sys_get_robust_list
.quad sys_splice
.quad sys_sync_file_range
- .quad sys_tee
+ .quad sys_tee /* 315 */
.quad compat_sys_vmsplice
+ .quad sys_gethostname
+ .quad sys_sethostname
ia32_syscall_end:
-
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