1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright 2019 Joyent, Inc. 25 */ 26 27 #include <sys/errno.h> 28 #include <sys/exec.h> 29 #include <sys/kmem.h> 30 #include <sys/modctl.h> 31 #include <sys/model.h> 32 #include <sys/proc.h> 33 #include <sys/syscall.h> 34 #include <sys/systm.h> 35 #include <sys/thread.h> 36 #include <sys/cmn_err.h> 37 #include <sys/archsystm.h> 38 #include <sys/pathname.h> 39 40 #include <sys/machbrand.h> 41 #include <sys/brand.h> 42 #include "sn1_brand.h" 43 44 char *sn1_emulation_table = NULL; 45 46 void sn1_init_brand_data(zone_t *); 47 void sn1_free_brand_data(zone_t *); 48 void sn1_setbrand(proc_t *); 49 int sn1_getattr(zone_t *, int, void *, size_t *); 50 int sn1_setattr(zone_t *, int, void *, size_t); 51 int sn1_brandsys(int, int64_t *, uintptr_t, uintptr_t, uintptr_t, 52 uintptr_t, uintptr_t, uintptr_t); 53 void sn1_copy_procdata(proc_t *, proc_t *); 54 void sn1_proc_exit(struct proc *, klwp_t *); 55 void sn1_exec(); 56 int sn1_initlwp(klwp_t *); 57 void sn1_forklwp(klwp_t *, klwp_t *); 58 void sn1_freelwp(klwp_t *); 59 void sn1_lwpexit(klwp_t *); 60 int sn1_elfexec(vnode_t *, execa_t *, uarg_t *, intpdata_t *, int, 61 size_t *, int, caddr_t, cred_t *, int); 62 63 /* sn1 brand */ 64 struct brand_ops sn1_brops = { 65 sn1_init_brand_data, 66 sn1_free_brand_data, 67 sn1_brandsys, 68 sn1_setbrand, 69 sn1_getattr, 70 sn1_setattr, 71 sn1_copy_procdata, 72 sn1_proc_exit, 73 sn1_exec, 74 lwp_setrval, 75 sn1_initlwp, 76 sn1_forklwp, 77 sn1_freelwp, 78 sn1_lwpexit, 79 sn1_elfexec, 80 NULL, 81 NULL, 82 NSIG, 83 }; 84 85 #ifdef sparc 86 87 struct brand_mach_ops sn1_mops = { 88 sn1_brand_syscall_callback, 89 sn1_brand_syscall32_callback 90 }; 91 92 #else /* sparc */ 93 94 #ifdef __amd64 95 96 struct brand_mach_ops sn1_mops = { 97 sn1_brand_sysenter_callback, 98 sn1_brand_int91_callback, 99 sn1_brand_syscall_callback, 100 sn1_brand_syscall32_callback 101 }; 102 103 #else /* ! __amd64 */ 104 105 struct brand_mach_ops sn1_mops = { 106 sn1_brand_sysenter_callback, 107 NULL, 108 sn1_brand_syscall_callback, 109 NULL 110 }; 111 #endif /* __amd64 */ 112 113 #endif /* _sparc */ 114 115 struct brand sn1_brand = { 116 BRAND_VER_1, 117 "sn1", 118 &sn1_brops, 119 &sn1_mops 120 }; 121 122 static struct modlbrand modlbrand = { 123 &mod_brandops, /* type of module */ 124 "Solaris N-1 Brand", /* description of module */ 125 &sn1_brand /* driver ops */ 126 }; 127 128 static struct modlinkage modlinkage = { 129 MODREV_1, (void *)&modlbrand, NULL 130 }; 131 132 void 133 sn1_setbrand(proc_t *p) 134 { 135 brand_solaris_setbrand(p, &sn1_brand); 136 } 137 138 /* ARGSUSED */ 139 int 140 sn1_getattr(zone_t *zone, int attr, void *buf, size_t *bufsize) 141 { 142 return (EINVAL); 143 } 144 145 /* ARGSUSED */ 146 int 147 sn1_setattr(zone_t *zone, int attr, void *buf, size_t bufsize) 148 { 149 return (EINVAL); 150 } 151 152 /*ARGSUSED*/ 153 int 154 sn1_brandsys(int cmd, int64_t *rval, uintptr_t arg1, uintptr_t arg2, 155 uintptr_t arg3, uintptr_t arg4, uintptr_t arg5, uintptr_t arg6) 156 { 157 int res; 158 159 *rval = 0; 160 161 res = brand_solaris_cmd(cmd, arg1, arg2, arg3, &sn1_brand, SN1_VERSION); 162 if (res >= 0) 163 return (res); 164 165 return (EINVAL); 166 } 167 168 void 169 sn1_copy_procdata(proc_t *child, proc_t *parent) 170 { 171 brand_solaris_copy_procdata(child, parent, &sn1_brand); 172 } 173 174 void 175 sn1_proc_exit(struct proc *p, klwp_t *l) 176 { 177 brand_solaris_proc_exit(p, l, &sn1_brand); 178 } 179 180 void 181 sn1_exec() 182 { 183 brand_solaris_exec(&sn1_brand); 184 } 185 186 int 187 sn1_initlwp(klwp_t *l) 188 { 189 return (brand_solaris_initlwp(l, &sn1_brand)); 190 } 191 192 void 193 sn1_forklwp(klwp_t *p, klwp_t *c) 194 { 195 brand_solaris_forklwp(p, c, &sn1_brand); 196 } 197 198 void 199 sn1_freelwp(klwp_t *l) 200 { 201 brand_solaris_freelwp(l, &sn1_brand); 202 } 203 204 void 205 sn1_lwpexit(klwp_t *l) 206 { 207 brand_solaris_lwpexit(l, &sn1_brand); 208 } 209 210 /*ARGSUSED*/ 211 void 212 sn1_free_brand_data(zone_t *zone) 213 { 214 } 215 216 /*ARGSUSED*/ 217 void 218 sn1_init_brand_data(zone_t *zone) 219 { 220 } 221 222 int 223 sn1_elfexec(vnode_t *vp, execa_t *uap, uarg_t *args, intpdata_t *idatap, 224 int level, size_t *execsz, int setid, caddr_t exec_file, cred_t *cred, 225 int brand_action) 226 { 227 return (brand_solaris_elfexec(vp, uap, args, idatap, level, execsz, 228 setid, exec_file, cred, brand_action, &sn1_brand, SN1_BRANDNAME, 229 SN1_LIB, SN1_LIB32, SN1_LINKER, SN1_LINKER32)); 230 } 231 232 int 233 _init(void) 234 { 235 int err; 236 237 /* 238 * Set up the table indicating which system calls we want to 239 * interpose on. We should probably build this automatically from 240 * a list of system calls that is shared with the user-space 241 * library. 242 */ 243 sn1_emulation_table = kmem_zalloc(NSYSCALL, KM_SLEEP); 244 sn1_emulation_table[SYS_read] = 1; /* 3 */ 245 sn1_emulation_table[SYS_write] = 1; /* 4 */ 246 sn1_emulation_table[SYS_time] = 1; /* 13 */ 247 sn1_emulation_table[SYS_getpid] = 1; /* 20 */ 248 sn1_emulation_table[SYS_mount] = 1; /* 21 */ 249 sn1_emulation_table[SYS_getuid] = 1; /* 24 */ 250 sn1_emulation_table[SYS_times] = 1; /* 43 */ 251 sn1_emulation_table[SYS_getgid] = 1; /* 47 */ 252 sn1_emulation_table[SYS_utssys] = 1; /* 57 */ 253 sn1_emulation_table[SYS_waitid] = 1; /* 107 */ 254 sn1_emulation_table[SYS_uname] = 1; /* 135 */ 255 256 err = mod_install(&modlinkage); 257 if (err) { 258 cmn_err(CE_WARN, "Couldn't install brand module"); 259 kmem_free(sn1_emulation_table, NSYSCALL); 260 } 261 262 return (err); 263 } 264 265 int 266 _info(struct modinfo *modinfop) 267 { 268 return (mod_info(&modlinkage, modinfop)); 269 } 270 271 int 272 _fini(void) 273 { 274 return (brand_solaris_fini(&sn1_emulation_table, &modlinkage, 275 &sn1_brand)); 276 } 277