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[PATCH] namespaces: utsname: switch to using uts namespaces

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Replace references to system_utsname to the per-process uts namespace
where appropriate.  This includes things like uname.

Changes: Per Eric Biederman's comments, use the per-process uts namespace
	for ELF_PLATFORM, sunrpc, and parts of net/ipv4/ipconfig.c

[jdike@addtoit.com: UML fix]
[clg@fr.ibm.com: cleanup]
[akpm@osdl.org: build fix]
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Andrey Savochkin <saw@sw.ru>
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Serge E. Hallyn
2006-10-02 02:18:11 -07:00
committed by Linus Torvalds
parent 0bdd7aab7f
commit e9ff3990f0
35 changed files with 180 additions and 160 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
kernel/sys.c
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@@ -1655,7 +1655,7 @@ 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 (copy_to_user(name, utsname(), sizeof *name))
errno = -EFAULT;
up_read(&uts_sem);
return errno;
@@ -1673,8 +1673,8 @@ asmlinkage long sys_sethostname(char __user *name, int len)
down_write(&uts_sem);
errno = -EFAULT;
if (!copy_from_user(tmp, name, len)) {
memcpy(system_utsname.nodename, tmp, len);
system_utsname.nodename[len] = 0;
memcpy(utsname()->nodename, tmp, len);
utsname()->nodename[len] = 0;
errno = 0;
}
up_write(&uts_sem);
@@ -1690,11 +1690,11 @@ asmlinkage long sys_gethostname(char __user *name, int len)
if (len < 0)
return -EINVAL;
down_read(&uts_sem);
i = 1 + strlen(system_utsname.nodename);
i = 1 + strlen(utsname()->nodename);
if (i > len)
i = len;
errno = 0;
if (copy_to_user(name, system_utsname.nodename, i))
if (copy_to_user(name, utsname()->nodename, i))
errno = -EFAULT;
up_read(&uts_sem);
return errno;
@@ -1719,8 +1719,8 @@ asmlinkage long sys_setdomainname(char __user *name, int len)
down_write(&uts_sem);
errno = -EFAULT;
if (!copy_from_user(tmp, name, len)) {
memcpy(system_utsname.domainname, tmp, len);
system_utsname.domainname[len] = 0;
memcpy(utsname()->domainname, tmp, len);
utsname()->domainname[len] = 0;
errno = 0;
}
up_write(&uts_sem);