| 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 | |