summaryrefslogtreecommitdiffstats
path: root/kernel/sys.c
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2010-03-11 00:21:21 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-13 00:52:32 +0100
commit5cacdb4add1b1e50fe75edc50ebbb7bddd9cf5e7 (patch)
treebd6595bb8c5c7e20ad01ed7ef766d873e5d26db3 /kernel/sys.c
parentimprove sys_newuname() for compat architectures (diff)
downloadlinux-5cacdb4add1b1e50fe75edc50ebbb7bddd9cf5e7.tar.xz
linux-5cacdb4add1b1e50fe75edc50ebbb7bddd9cf5e7.zip
Add generic sys_olduname()
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>
Diffstat (limited to 'kernel/sys.c')
-rw-r--r--kernel/sys.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index e483eb5530e4..8298878f4f71 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -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;