/* $NetBSD: linux32_uid16.c,v 1.2 2008/11/19 18:36:04 ad Exp $ */ /*- * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. * Copyright (c) 2008 Nicolas Joly, all rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Emmanuel Dreyfus * 4. The name of the author may not be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: linux32_uid16.c,v 1.2 2008/11/19 18:36:04 ad Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #define LINUX32TOBSD_UID(u) \ (((u) == (linux32_uid16_t)-1) ? -1 : (u)) #define LINUX32TOBSD_GID(g) \ (((g) == (linux32_gid16_t)-1) ? -1 : (g)) #define BSDTOLINUX32_UID(u) \ (((u) & ~0xffff) ? (linux32_uid16_t)65534 : (linux32_uid16_t)(u)) #define BSDTOLINUX32_GID(g) \ (((g) & ~0xffff) ? (linux32_gid16_t)65534 : (linux32_gid16_t)(g)) int linux32_sys_chown16(struct lwp *l, const struct linux32_sys_chown16_args *uap, register_t *retval) { /* { syscallarg(const netbsd32_charp) path; syscallarg(linux32_uid16_t) uid; syscallarg(linux32_gid16_t) gid; } */ struct sys___posix_chown_args ua; NETBSD32TOP_UAP(path, const char); SCARG(&ua, uid) = LINUX32TOBSD_UID(SCARG(uap, uid)); SCARG(&ua, gid) = LINUX32TOBSD_GID(SCARG(uap, gid)); return sys___posix_chown(l, &ua, retval); } int linux32_sys_lchown16(struct lwp *l, const struct linux32_sys_lchown16_args *uap, register_t *retval) { /* { syscallarg(const netbsd32_charp) path; syscallarg(linux32_uid16_t) uid; syscallarg(linux32_gid16_t) gid; } */ struct sys___posix_lchown_args ua; NETBSD32TOP_UAP(path, const char); SCARG(&ua, uid) = LINUX32TOBSD_UID(SCARG(uap, uid)); SCARG(&ua, gid) = LINUX32TOBSD_GID(SCARG(uap, gid)); return sys___posix_lchown(l, &ua, retval); } int linux32_sys_fchown16(struct lwp *l, const struct linux32_sys_fchown16_args *uap, register_t *retval) { /* { syscallarg(int) fd; syscallarg(linux32_uid16_t) uid; syscallarg(linux32_gid16_t) gid; } */ struct sys___posix_fchown_args ua; SCARG(&ua, fd) = SCARG(uap, fd); SCARG(&ua, uid) = LINUX32TOBSD_UID(SCARG(uap, uid)); SCARG(&ua, gid) = LINUX32TOBSD_GID(SCARG(uap, gid)); return sys___posix_fchown(l, &ua, retval); } int linux32_sys_getgroups16(struct lwp *l, const struct linux32_sys_getgroups16_args *uap, register_t *retval) { /* { syscallarg(int) gidsetsize; syscallarg(linux32_gid16p_t) gidset; } */ struct linux_sys_getgroups16_args ua; NETBSD32TO64_UAP(gidsetsize); NETBSD32TOP_UAP(gidset, linux_gid16_t); return linux_sys_getgroups16(l, &ua, retval); } int linux32_sys_setgroups16(struct lwp *l, const struct linux32_sys_setgroups16_args *uap, register_t *retval) { /* { syscallarg(int) gidsetsize; syscallarg(linux32_gid16p_t) gidset; } */ struct linux_sys_setgroups16_args ua; NETBSD32TO64_UAP(gidsetsize); NETBSD32TOP_UAP(gidset, linux_gid16_t); return linux_sys_setgroups16(l, &ua, retval); } int linux32_sys_setreuid16(struct lwp *l, const struct linux32_sys_setreuid16_args *uap, register_t *retval) { /* { syscallarg(linux32_uid16_t) ruid; syscallarg(linux32_uid16_t) euid; } */ struct sys_setreuid_args bsa; SCARG(&bsa, ruid) = LINUX32TOBSD_UID(SCARG(uap, ruid)); SCARG(&bsa, euid) = LINUX32TOBSD_UID(SCARG(uap, euid)); return sys_setreuid(l, &bsa, retval); } int linux32_sys_setregid16(struct lwp *l, const struct linux32_sys_setregid16_args *uap, register_t *retval) { /* { syscallarg(linux32_gid16_t) rgid; syscallarg(linux32_gid16_t) egid; } */ struct sys_setregid_args bsa; SCARG(&bsa, rgid) = LINUX32TOBSD_GID(SCARG(uap, rgid)); SCARG(&bsa, egid) = LINUX32TOBSD_GID(SCARG(uap, egid)); return sys_setregid(l, &bsa, retval); } int linux32_sys_setresuid16(struct lwp *l, const struct linux32_sys_setresuid16_args *uap, register_t *retval) { /* { syscallarg(linux32_uid16_t) ruid; syscallarg(linux32_uid16_t) euid; syscallarg(linux32_uid16_t) suid; } */ struct linux32_sys_setresuid_args lsa; SCARG(&lsa, ruid) = LINUX32TOBSD_UID(SCARG(uap, ruid)); SCARG(&lsa, euid) = LINUX32TOBSD_UID(SCARG(uap, euid)); SCARG(&lsa, suid) = LINUX32TOBSD_UID(SCARG(uap, suid)); return linux32_sys_setresuid(l, &lsa, retval); } int linux32_sys_setresgid16(struct lwp *l, const struct linux32_sys_setresgid16_args *uap, register_t *retval) { /* { syscallarg(linux32_gid16_t) rgid; syscallarg(linux32_gid16_t) egid; syscallarg(linux32_gid16_t) sgid; } */ struct linux32_sys_setresgid_args lsa; SCARG(&lsa, rgid) = LINUX32TOBSD_GID(SCARG(uap, rgid)); SCARG(&lsa, egid) = LINUX32TOBSD_GID(SCARG(uap, egid)); SCARG(&lsa, sgid) = LINUX32TOBSD_GID(SCARG(uap, sgid)); return linux32_sys_setresgid(l, &lsa, retval); } int linux32_sys_getresuid16(struct lwp *l, const struct linux32_sys_getresuid16_args *uap, register_t *retval) { /* { syscallarg(linux32_uid16p_t) ruid; syscallarg(linux32_uid16p_t) euid; syscallarg(linux32_uid16p_t) suid; } */ kauth_cred_t pc = l->l_cred; int error; uid_t buid; linux32_uid16_t luid; buid = kauth_cred_getuid(pc); luid = BSDTOLINUX32_UID(buid); if ((error = copyout(&luid, SCARG_P32(uap, ruid), sizeof(luid))) != 0) return error; buid = kauth_cred_geteuid(pc); luid = BSDTOLINUX32_UID(buid); if ((error = copyout(&luid, SCARG_P32(uap, euid), sizeof(luid))) != 0) return error; buid = kauth_cred_getsvuid(pc); luid = BSDTOLINUX32_UID(buid); return (copyout(&luid, SCARG_P32(uap, suid), sizeof(luid))); } int linux32_sys_getresgid16(struct lwp *l, const struct linux32_sys_getresgid16_args *uap, register_t *retval) { /* { syscallarg(linux32_gid16p_t) rgid; syscallarg(linux32_gid16p_t) egid; syscallarg(linux32_gid16p_t) sgid; } */ kauth_cred_t pc = l->l_cred; int error; gid_t bgid; linux32_gid16_t lgid; bgid = kauth_cred_getgid(pc); lgid = BSDTOLINUX32_GID(bgid); if ((error = copyout(&lgid, SCARG_P32(uap, rgid), sizeof(lgid))) != 0) return error; bgid = kauth_cred_getegid(pc); lgid = BSDTOLINUX32_GID(bgid); if ((error = copyout(&lgid, SCARG_P32(uap, egid), sizeof(lgid))) != 0) return error; bgid = kauth_cred_getsvgid(pc); lgid = BSDTOLINUX32_GID(bgid); return (copyout(&lgid, SCARG_P32(uap, sgid), sizeof(lgid))); }