1 /* $NetBSD: linux32_uid16.c,v 1.2 2008/11/19 18:36:04 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. 5 * Copyright (c) 2008 Nicolas Joly, all rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Emmanuel Dreyfus 18 * 4. The name of the author may not be used to endorse or promote 19 * products derived from this software without specific prior written 20 * permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: linux32_uid16.c,v 1.2 2008/11/19 18:36:04 ad Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/proc.h> 40 #include <sys/kauth.h> 41 42 #include <compat/netbsd32/netbsd32.h> 43 44 #include <compat/linux/common/linux_types.h> 45 #include <compat/linux/common/linux_signal.h> 46 #include <compat/linux/common/linux_ipc.h> 47 #include <compat/linux/common/linux_sem.h> 48 #include <compat/linux/linux_syscallargs.h> 49 50 #include <compat/linux32/common/linux32_types.h> 51 #include <compat/linux32/common/linux32_signal.h> 52 #include <compat/linux32/common/linux32_machdep.h> 53 #include <compat/linux32/linux32_syscallargs.h> 54 55 #define LINUX32TOBSD_UID(u) \ 56 (((u) == (linux32_uid16_t)-1) ? -1 : (u)) 57 #define LINUX32TOBSD_GID(g) \ 58 (((g) == (linux32_gid16_t)-1) ? -1 : (g)) 59 60 #define BSDTOLINUX32_UID(u) \ 61 (((u) & ~0xffff) ? (linux32_uid16_t)65534 : (linux32_uid16_t)(u)) 62 #define BSDTOLINUX32_GID(g) \ 63 (((g) & ~0xffff) ? (linux32_gid16_t)65534 : (linux32_gid16_t)(g)) 64 65 int 66 linux32_sys_chown16(struct lwp *l, const struct linux32_sys_chown16_args *uap, register_t *retval) 67 { 68 /* { 69 syscallarg(const netbsd32_charp) path; 70 syscallarg(linux32_uid16_t) uid; 71 syscallarg(linux32_gid16_t) gid; 72 } */ 73 struct sys___posix_chown_args ua; 74 75 NETBSD32TOP_UAP(path, const char); 76 SCARG(&ua, uid) = LINUX32TOBSD_UID(SCARG(uap, uid)); 77 SCARG(&ua, gid) = LINUX32TOBSD_GID(SCARG(uap, gid)); 78 79 return sys___posix_chown(l, &ua, retval); 80 } 81 82 int 83 linux32_sys_lchown16(struct lwp *l, const struct linux32_sys_lchown16_args *uap, register_t *retval) 84 { 85 /* { 86 syscallarg(const netbsd32_charp) path; 87 syscallarg(linux32_uid16_t) uid; 88 syscallarg(linux32_gid16_t) gid; 89 } */ 90 struct sys___posix_lchown_args ua; 91 92 NETBSD32TOP_UAP(path, const char); 93 SCARG(&ua, uid) = LINUX32TOBSD_UID(SCARG(uap, uid)); 94 SCARG(&ua, gid) = LINUX32TOBSD_GID(SCARG(uap, gid)); 95 96 return sys___posix_lchown(l, &ua, retval); 97 } 98 99 int 100 linux32_sys_fchown16(struct lwp *l, const struct linux32_sys_fchown16_args *uap, register_t *retval) 101 { 102 /* { 103 syscallarg(int) fd; 104 syscallarg(linux32_uid16_t) uid; 105 syscallarg(linux32_gid16_t) gid; 106 } */ 107 struct sys___posix_fchown_args ua; 108 109 SCARG(&ua, fd) = SCARG(uap, fd); 110 SCARG(&ua, uid) = LINUX32TOBSD_UID(SCARG(uap, uid)); 111 SCARG(&ua, gid) = LINUX32TOBSD_GID(SCARG(uap, gid)); 112 113 return sys___posix_fchown(l, &ua, retval); 114 } 115 116 int 117 linux32_sys_getgroups16(struct lwp *l, const struct linux32_sys_getgroups16_args *uap, register_t *retval) 118 { 119 /* { 120 syscallarg(int) gidsetsize; 121 syscallarg(linux32_gid16p_t) gidset; 122 } */ 123 struct linux_sys_getgroups16_args ua; 124 125 NETBSD32TO64_UAP(gidsetsize); 126 NETBSD32TOP_UAP(gidset, linux_gid16_t); 127 128 return linux_sys_getgroups16(l, &ua, retval); 129 } 130 131 int 132 linux32_sys_setgroups16(struct lwp *l, const struct linux32_sys_setgroups16_args *uap, register_t *retval) 133 { 134 /* { 135 syscallarg(int) gidsetsize; 136 syscallarg(linux32_gid16p_t) gidset; 137 } */ 138 struct linux_sys_setgroups16_args ua; 139 140 NETBSD32TO64_UAP(gidsetsize); 141 NETBSD32TOP_UAP(gidset, linux_gid16_t); 142 143 return linux_sys_setgroups16(l, &ua, retval); 144 } 145 146 int 147 linux32_sys_setreuid16(struct lwp *l, const struct linux32_sys_setreuid16_args *uap, register_t *retval) 148 { 149 /* { 150 syscallarg(linux32_uid16_t) ruid; 151 syscallarg(linux32_uid16_t) euid; 152 } */ 153 struct sys_setreuid_args bsa; 154 155 SCARG(&bsa, ruid) = LINUX32TOBSD_UID(SCARG(uap, ruid)); 156 SCARG(&bsa, euid) = LINUX32TOBSD_UID(SCARG(uap, euid)); 157 158 return sys_setreuid(l, &bsa, retval); 159 } 160 161 int 162 linux32_sys_setregid16(struct lwp *l, const struct linux32_sys_setregid16_args *uap, register_t *retval) 163 { 164 /* { 165 syscallarg(linux32_gid16_t) rgid; 166 syscallarg(linux32_gid16_t) egid; 167 } */ 168 struct sys_setregid_args bsa; 169 170 SCARG(&bsa, rgid) = LINUX32TOBSD_GID(SCARG(uap, rgid)); 171 SCARG(&bsa, egid) = LINUX32TOBSD_GID(SCARG(uap, egid)); 172 173 return sys_setregid(l, &bsa, retval); 174 } 175 176 int 177 linux32_sys_setresuid16(struct lwp *l, const struct linux32_sys_setresuid16_args *uap, register_t *retval) 178 { 179 /* { 180 syscallarg(linux32_uid16_t) ruid; 181 syscallarg(linux32_uid16_t) euid; 182 syscallarg(linux32_uid16_t) suid; 183 } */ 184 struct linux32_sys_setresuid_args lsa; 185 186 SCARG(&lsa, ruid) = LINUX32TOBSD_UID(SCARG(uap, ruid)); 187 SCARG(&lsa, euid) = LINUX32TOBSD_UID(SCARG(uap, euid)); 188 SCARG(&lsa, suid) = LINUX32TOBSD_UID(SCARG(uap, suid)); 189 190 return linux32_sys_setresuid(l, &lsa, retval); 191 } 192 193 int 194 linux32_sys_setresgid16(struct lwp *l, const struct linux32_sys_setresgid16_args *uap, register_t *retval) 195 { 196 /* { 197 syscallarg(linux32_gid16_t) rgid; 198 syscallarg(linux32_gid16_t) egid; 199 syscallarg(linux32_gid16_t) sgid; 200 } */ 201 struct linux32_sys_setresgid_args lsa; 202 203 SCARG(&lsa, rgid) = LINUX32TOBSD_GID(SCARG(uap, rgid)); 204 SCARG(&lsa, egid) = LINUX32TOBSD_GID(SCARG(uap, egid)); 205 SCARG(&lsa, sgid) = LINUX32TOBSD_GID(SCARG(uap, sgid)); 206 207 return linux32_sys_setresgid(l, &lsa, retval); 208 } 209 210 int 211 linux32_sys_getresuid16(struct lwp *l, const struct linux32_sys_getresuid16_args *uap, register_t *retval) 212 { 213 /* { 214 syscallarg(linux32_uid16p_t) ruid; 215 syscallarg(linux32_uid16p_t) euid; 216 syscallarg(linux32_uid16p_t) suid; 217 } */ 218 kauth_cred_t pc = l->l_cred; 219 int error; 220 uid_t buid; 221 linux32_uid16_t luid; 222 223 buid = kauth_cred_getuid(pc); 224 luid = BSDTOLINUX32_UID(buid); 225 if ((error = copyout(&luid, SCARG_P32(uap, ruid), sizeof(luid))) != 0) 226 return error; 227 228 buid = kauth_cred_geteuid(pc); 229 luid = BSDTOLINUX32_UID(buid); 230 if ((error = copyout(&luid, SCARG_P32(uap, euid), sizeof(luid))) != 0) 231 return error; 232 233 buid = kauth_cred_getsvuid(pc); 234 luid = BSDTOLINUX32_UID(buid); 235 return (copyout(&luid, SCARG_P32(uap, suid), sizeof(luid))); 236 } 237 238 int 239 linux32_sys_getresgid16(struct lwp *l, const struct linux32_sys_getresgid16_args *uap, register_t *retval) 240 { 241 /* { 242 syscallarg(linux32_gid16p_t) rgid; 243 syscallarg(linux32_gid16p_t) egid; 244 syscallarg(linux32_gid16p_t) sgid; 245 } */ 246 kauth_cred_t pc = l->l_cred; 247 int error; 248 gid_t bgid; 249 linux32_gid16_t lgid; 250 251 bgid = kauth_cred_getgid(pc); 252 lgid = BSDTOLINUX32_GID(bgid); 253 if ((error = copyout(&lgid, SCARG_P32(uap, rgid), sizeof(lgid))) != 0) 254 return error; 255 256 bgid = kauth_cred_getegid(pc); 257 lgid = BSDTOLINUX32_GID(bgid); 258 if ((error = copyout(&lgid, SCARG_P32(uap, egid), sizeof(lgid))) != 0) 259 return error; 260 261 bgid = kauth_cred_getsvgid(pc); 262 lgid = BSDTOLINUX32_GID(bgid); 263 return (copyout(&lgid, SCARG_P32(uap, sgid), sizeof(lgid))); 264 } 265
Indexes created Sat Sep 20 22:09:52 GMT 2025