diff options
Diffstat (limited to 'arch/sparc64/solaris/socksys.c')
| -rw-r--r-- | arch/sparc64/solaris/socksys.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/arch/sparc64/solaris/socksys.c b/arch/sparc64/solaris/socksys.c new file mode 100644 index 000000000000..d7c1c76582cc --- /dev/null +++ b/arch/sparc64/solaris/socksys.c @@ -0,0 +1,211 @@ +/* $Id: socksys.c,v 1.21 2002/02/08 03:57:14 davem Exp $ + * socksys.c: /dev/inet/ stuff for Solaris emulation. + * + * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * Copyright (C) 1997, 1998 Patrik Rak (prak3264@ss1000.ms.mff.cuni.cz) + * Copyright (C) 1995, 1996 Mike Jagdis (jaggy@purplet.demon.co.uk) + */ + +/* + * Dave, _please_ give me specifications on this fscking mess so that I + * could at least get it into the state when it wouldn't screw the rest of + * the kernel over. socksys.c and timod.c _stink_ and we are not talking + * H2S here, it's isopropilmercaptan in concentrations way over LD50. -- AV + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/smp.h> +#include <linux/smp_lock.h> +#include <linux/ioctl.h> +#include <linux/fs.h> +#include <linux/file.h> +#include <linux/init.h> +#include <linux/poll.h> +#include <linux/slab.h> +#include <linux/syscalls.h> +#include <linux/in.h> +#include <linux/devfs_fs_kernel.h> + +#include <net/sock.h> + +#include <asm/uaccess.h> +#include <asm/termios.h> + +#include "conv.h" +#include "socksys.h" + +static int af_inet_protocols[] = { +IPPROTO_ICMP, IPPROTO_ICMP, IPPROTO_IGMP, IPPROTO_IPIP, IPPROTO_TCP, +IPPROTO_EGP, IPPROTO_PUP, IPPROTO_UDP, IPPROTO_IDP, IPPROTO_RAW, +0, 0, 0, 0, 0, 0, +}; + +#ifndef DEBUG_SOLARIS_KMALLOC + +#define mykmalloc kmalloc +#define mykfree kfree + +#else + +extern void * mykmalloc(size_t s, int gfp); +extern void mykfree(void *); + +#endif + +static unsigned int (*sock_poll)(struct file *, poll_table *); + +static struct file_operations socksys_file_ops = { + /* Currently empty */ +}; + +static int socksys_open(struct inode * inode, struct file * filp) +{ + int family, type, protocol, fd; + struct dentry *dentry; + int (*sys_socket)(int,int,int) = + (int (*)(int,int,int))SUNOS(97); + struct sol_socket_struct * sock; + + family = ((iminor(inode) >> 4) & 0xf); + switch (family) { + case AF_UNIX: + type = SOCK_STREAM; + protocol = 0; + break; + case AF_INET: + protocol = af_inet_protocols[iminor(inode) & 0xf]; + switch (protocol) { + case IPPROTO_TCP: type = SOCK_STREAM; break; + case IPPROTO_UDP: type = SOCK_DGRAM; break; + default: type = SOCK_RAW; break; + } + break; + default: + type = SOCK_RAW; + protocol = 0; + break; + } + + fd = sys_socket(family, type, protocol); + if (fd < 0) + return fd; + /* + * N.B. The following operations are not legal! + * + * No shit. WTF is it supposed to do, anyway? + * + * Try instead: + * d_delete(filp->f_dentry), then d_instantiate with sock inode + */ + dentry = filp->f_dentry; + filp->f_dentry = dget(fcheck(fd)->f_dentry); + filp->f_dentry->d_inode->i_rdev = inode->i_rdev; + filp->f_dentry->d_inode->i_flock = inode->i_flock; + SOCKET_I(filp->f_dentry->d_inode)->file = filp; + filp->f_op = &socksys_file_ops; + sock = (struct sol_socket_struct*) + mykmalloc(sizeof(struct sol_socket_struct), GFP_KERNEL); + if (!sock) return -ENOMEM; + SOLDD(("sock=%016lx(%016lx)\n", sock, filp)); + sock->magic = SOLARIS_SOCKET_MAGIC; + sock->modcount = 0; + sock->state = TS_UNBND; + sock->offset = 0; + sock->pfirst = sock->plast = NULL; + filp->private_data = sock; + SOLDD(("filp->private_data %016lx\n", filp->private_data)); + + sys_close(fd); + dput(dentry); + return 0; +} + +static int socksys_release(struct inode * inode, struct file * filp) +{ + struct sol_socket_struct * sock; + struct T_primsg *it; + + /* XXX: check this */ + sock = (struct sol_socket_struct *)filp->private_data; + SOLDD(("sock release %016lx(%016lx)\n", sock, filp)); + it = sock->pfirst; + while (it) { + struct T_primsg *next = it->next; + + SOLDD(("socksys_release %016lx->%016lx\n", it, next)); + mykfree((char*)it); + it = next; + } + filp->private_data = NULL; + SOLDD(("socksys_release %016lx\n", sock)); + mykfree((char*)sock); + return 0; +} + +static unsigned int socksys_poll(struct file * filp, poll_table * wait) +{ + struct inode *ino; + unsigned int mask = 0; + + ino=filp->f_dentry->d_inode; + if (ino && S_ISSOCK(ino->i_mode)) { + struct sol_socket_struct *sock; + sock = (struct sol_socket_struct*)filp->private_data; + if (sock && sock->pfirst) { + mask |= POLLIN | POLLRDNORM; + if (sock->pfirst->pri == MSG_HIPRI) + mask |= POLLPRI; + } + } + if (sock_poll) + mask |= (*sock_poll)(filp, wait); + return mask; +} + +static struct file_operations socksys_fops = { + .open = socksys_open, + .release = socksys_release, +}; + +int __init +init_socksys(void) +{ + int ret; + struct file * file; + int (*sys_socket)(int,int,int) = + (int (*)(int,int,int))SUNOS(97); + int (*sys_close)(unsigned int) = + (int (*)(unsigned int))SYS(close); + + ret = register_chrdev (30, "socksys", &socksys_fops); + if (ret < 0) { + printk ("Couldn't register socksys character device\n"); + return ret; + } + ret = sys_socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); + if (ret < 0) { + printk ("Couldn't create socket\n"); + return ret; + } + + devfs_mk_cdev(MKDEV(30, 0), S_IFCHR|S_IRUSR|S_IWUSR, "socksys"); + + file = fcheck(ret); + /* N.B. Is this valid? Suppose the f_ops are in a module ... */ + socksys_file_ops = *file->f_op; + sys_close(ret); + sock_poll = socksys_file_ops.poll; + socksys_file_ops.poll = socksys_poll; + socksys_file_ops.release = socksys_release; + return 0; +} + +void +cleanup_socksys(void) +{ + if (unregister_chrdev(30, "socksys")) + printk ("Couldn't unregister socksys character device\n"); + devfs_remove ("socksys"); +} |