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Add generic sys_olduname()

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Add generic implementations of the old and really old uname system calls.
Note that sh only implements sys_olduname but not sys_oldolduname, but I'm
not going to bother with another ifdef for that special case.

m32r implemented an old uname but never wired it up, so kill it, too.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: James Morris <jmorris@namei.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig
2010-03-10 15:21:21 -08:00
committed by Linus Torvalds
parent e28cbf2293
commit 5cacdb4add
19 changed files with 66 additions and 284 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
kernel/sys.c
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@ -1138,6 +1138,60 @@ SYSCALL_DEFINE1(newuname, struct new_utsname __user *, name)
return errno;
}
#ifdef __ARCH_WANT_SYS_OLD_UNAME
/*
* Old cruft
*/
SYSCALL_DEFINE1(uname, struct old_utsname __user *, name)
{
int error = 0;
if (!name)
return -EFAULT;
down_read(&uts_sem);
if (copy_to_user(name, utsname(), sizeof(*name)))
error = -EFAULT;
up_read(&uts_sem);
if (!error && override_architecture(name))
error = -EFAULT;
return error;
}
SYSCALL_DEFINE1(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, &utsname()->sysname,
__OLD_UTS_LEN);
error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
error |= __copy_to_user(&name->nodename, &utsname()->nodename,
__OLD_UTS_LEN);
error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
error |= __copy_to_user(&name->release, &utsname()->release,
__OLD_UTS_LEN);
error |= __put_user(0, name->release + __OLD_UTS_LEN);
error |= __copy_to_user(&name->version, &utsname()->version,
__OLD_UTS_LEN);
error |= __put_user(0, name->version + __OLD_UTS_LEN);
error |= __copy_to_user(&name->machine, &utsname()->machine,
__OLD_UTS_LEN);
error |= __put_user(0, name->machine + __OLD_UTS_LEN);
up_read(&uts_sem);
if (!error && override_architecture(name))
error = -EFAULT;
return error ? -EFAULT : 0;
}
#endif
SYSCALL_DEFINE2(sethostname, char __user *, name, int, len)
{
int errno;