usr/src/uts/common/brand/sn1/sn1_brand.c

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