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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 | /* $Id: socksys.c,v 1.7 1998/03/29 10:11:04 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) */ #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/file.h> #include <linux/malloc.h> #include <asm/uaccess.h> #include <asm/termios.h> #include "conv.h" #include "socksys.h" extern asmlinkage int sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg); 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 = { NULL, /* lseek */ NULL, /* read */ NULL, /* write */ NULL, /* readdir */ NULL, /* poll */ NULL, /* ioctl */ NULL, /* mmap */ NULL, /* open */ NULL, /* flush */ NULL, /* release */ }; 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 = ((MINOR(inode->i_rdev) >> 4) & 0xf); switch (family) { case AF_UNIX: type = SOCK_STREAM; protocol = 0; break; case AF_INET: protocol = af_inet_protocols[MINOR(inode->i_rdev) & 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! * 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; filp->f_dentry->d_inode->u.socket_i.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 && ino->i_sock) { 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 = { NULL, /* lseek */ NULL, /* read */ NULL, /* write */ NULL, /* readdir */ NULL, /* poll */ NULL, /* ioctl */ NULL, /* mmap */ socksys_open, /* open */ NULL, /* flush */ socksys_release,/* release */ }; __initfunc(int 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; } 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"); } |