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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/ipc/syscall.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/ipc/syscall.c')
-rw-r--r-- | kernel/ipc/syscall.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/kernel/ipc/syscall.c b/kernel/ipc/syscall.c new file mode 100644 index 000000000..52429489c --- /dev/null +++ b/kernel/ipc/syscall.c @@ -0,0 +1,99 @@ +/* + * sys_ipc() is the old de-multiplexer for the SysV IPC calls. + * + * This is really horribly ugly, and new architectures should just wire up + * the individual syscalls instead. + */ +#include <linux/unistd.h> + +#ifdef __ARCH_WANT_SYS_IPC +#include <linux/errno.h> +#include <linux/ipc.h> +#include <linux/shm.h> +#include <linux/syscalls.h> +#include <linux/uaccess.h> + +SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second, + unsigned long, third, void __user *, ptr, long, fifth) +{ + int version, ret; + + version = call >> 16; /* hack for backward compatibility */ + call &= 0xffff; + + switch (call) { + case SEMOP: + return sys_semtimedop(first, (struct sembuf __user *)ptr, + second, NULL); + case SEMTIMEDOP: + return sys_semtimedop(first, (struct sembuf __user *)ptr, + second, + (const struct timespec __user *)fifth); + + case SEMGET: + return sys_semget(first, second, third); + case SEMCTL: { + unsigned long arg; + if (!ptr) + return -EINVAL; + if (get_user(arg, (unsigned long __user *) ptr)) + return -EFAULT; + return sys_semctl(first, second, third, arg); + } + + case MSGSND: + return sys_msgsnd(first, (struct msgbuf __user *) ptr, + second, third); + case MSGRCV: + switch (version) { + case 0: { + struct ipc_kludge tmp; + if (!ptr) + return -EINVAL; + + if (copy_from_user(&tmp, + (struct ipc_kludge __user *) ptr, + sizeof(tmp))) + return -EFAULT; + return sys_msgrcv(first, tmp.msgp, second, + tmp.msgtyp, third); + } + default: + return sys_msgrcv(first, + (struct msgbuf __user *) ptr, + second, fifth, third); + } + case MSGGET: + return sys_msgget((key_t) first, second); + case MSGCTL: + return sys_msgctl(first, second, (struct msqid_ds __user *)ptr); + + case SHMAT: + switch (version) { + default: { + unsigned long raddr; + ret = do_shmat(first, (char __user *)ptr, + second, &raddr, SHMLBA); + if (ret) + return ret; + return put_user(raddr, (unsigned long __user *) third); + } + case 1: + /* + * This was the entry point for kernel-originating calls + * from iBCS2 in 2.2 days. + */ + return -EINVAL; + } + case SHMDT: + return sys_shmdt((char __user *)ptr); + case SHMGET: + return sys_shmget(first, second, third); + case SHMCTL: + return sys_shmctl(first, second, + (struct shmid_ds __user *) ptr); + default: + return -ENOSYS; + } +} +#endif |