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[50.253.99.174]) by smtp.gmail.com with ESMTPSA id w5sm13526852ilu.83.2022.02.01.03.14.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Feb 2022 03:14:58 -0800 (PST) From: Warner Losh To: qemu-devel@nongnu.org Subject: [PATCH 11/22] bsd-user/sycall.c: Now obsolete, remove Date: Tue, 1 Feb 2022 04:14:44 -0700 Message-Id: <20220201111455.52511-12-imp@bsdimp.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20220201111455.52511-1-imp@bsdimp.com> References: <20220201111455.52511-1-imp@bsdimp.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::132 (failed) Received-SPF: none client-ip=2607:f8b0:4864:20::132; envelope-from=imp@bsdimp.com; helo=mail-il1-x132.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , arrowd@FreeBSD.org, Kyle Evans , Richard Henderson , def@FreeBSD.org, jrtc27@FreeBSD.org, Warner Losh , Brad Smith Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Warner Losh --- bsd-user/syscall.c | 516 --------------------------------------------- 1 file changed, 516 deletions(-) delete mode 100644 bsd-user/syscall.c diff --git a/bsd-user/syscall.c b/bsd-user/syscall.c deleted file mode 100644 index d3322760f43..00000000000 --- a/bsd-user/syscall.c +++ /dev/null @@ -1,516 +0,0 @@ -/* - * BSD syscalls - * - * Copyright (c) 2003 - 2008 Fabrice Bellard - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see . - */ -#include "qemu/osdep.h" -#include "qemu/cutils.h" -#include "qemu/path.h" -#include -#include -#include -#include - -#include "qemu.h" -#include "qemu-common.h" -#include "user/syscall-trace.h" - -//#define DEBUG - -static abi_ulong target_brk; -static abi_ulong target_original_brk; - -abi_long get_errno(abi_long ret) -{ - if (ret == -1) { - /* XXX need to translate host -> target errnos here */ - return -(errno); - } - return ret; -} - -#define target_to_host_bitmask(x, tbl) (x) - -bool is_error(abi_long ret) -{ - return (abi_ulong)ret >= (abi_ulong)(-4096); -} - -void target_set_brk(abi_ulong new_brk) -{ - target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk); -} - -/* do_obreak() must return target errnos. */ -static abi_long do_obreak(abi_ulong new_brk) -{ - abi_ulong brk_page; - abi_long mapped_addr; - int new_alloc_size; - - if (!new_brk) - return 0; - if (new_brk < target_original_brk) - return -TARGET_EINVAL; - - brk_page = HOST_PAGE_ALIGN(target_brk); - - /* If the new brk is less than this, set it and we're done... */ - if (new_brk < brk_page) { - target_brk = new_brk; - return 0; - } - - /* We need to allocate more memory after the brk... */ - new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page + 1); - mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size, - PROT_READ|PROT_WRITE, - MAP_ANON|MAP_FIXED|MAP_PRIVATE, -1, 0)); - - if (!is_error(mapped_addr)) - target_brk = new_brk; - else - return mapped_addr; - - return 0; -} - -#ifdef __FreeBSD__ -/* - * XXX this uses the undocumented oidfmt interface to find the kind of - * a requested sysctl, see /sys/kern/kern_sysctl.c:sysctl_sysctl_oidfmt() - * (this is mostly copied from src/sbin/sysctl/sysctl.c) - */ -static int -oidfmt(int *oid, int len, char *fmt, uint32_t *kind) -{ - int qoid[CTL_MAXNAME+2]; - uint8_t buf[BUFSIZ]; - int i; - size_t j; - - qoid[0] = 0; - qoid[1] = 4; - memcpy(qoid + 2, oid, len * sizeof(int)); - - j = sizeof(buf); - i = sysctl(qoid, len + 2, buf, &j, 0, 0); - if (i) - return i; - - if (kind) - *kind = *(uint32_t *)buf; - - if (fmt) - strcpy(fmt, (char *)(buf + sizeof(uint32_t))); - return (0); -} - -/* - * try and convert sysctl return data for the target. - * XXX doesn't handle CTLTYPE_OPAQUE and CTLTYPE_STRUCT. - */ -static int sysctl_oldcvt(void *holdp, size_t holdlen, uint32_t kind) -{ - switch (kind & CTLTYPE) { - case CTLTYPE_INT: - case CTLTYPE_UINT: - *(uint32_t *)holdp = tswap32(*(uint32_t *)holdp); - break; -#ifdef TARGET_ABI32 - case CTLTYPE_LONG: - case CTLTYPE_ULONG: - *(uint32_t *)holdp = tswap32(*(long *)holdp); - break; -#else - case CTLTYPE_LONG: - *(uint64_t *)holdp = tswap64(*(long *)holdp); - break; - case CTLTYPE_ULONG: - *(uint64_t *)holdp = tswap64(*(unsigned long *)holdp); - break; -#endif -#ifdef CTLTYPE_U64 - case CTLTYPE_S64: - case CTLTYPE_U64: -#else - case CTLTYPE_QUAD: -#endif - *(uint64_t *)holdp = tswap64(*(uint64_t *)holdp); - break; - case CTLTYPE_STRING: - break; - default: - /* XXX unhandled */ - return -1; - } - return 0; -} - -/* XXX this needs to be emulated on non-FreeBSD hosts... */ -static abi_long do_freebsd_sysctl(abi_ulong namep, int32_t namelen, abi_ulong oldp, - abi_ulong oldlenp, abi_ulong newp, abi_ulong newlen) -{ - abi_long ret; - void *hnamep, *holdp, *hnewp = NULL; - size_t holdlen; - abi_ulong oldlen = 0; - int32_t *snamep = g_malloc(sizeof(int32_t) * namelen), *p, *q, i; - uint32_t kind = 0; - - if (oldlenp) - get_user_ual(oldlen, oldlenp); - if (!(hnamep = lock_user(VERIFY_READ, namep, namelen, 1))) - return -TARGET_EFAULT; - if (newp && !(hnewp = lock_user(VERIFY_READ, newp, newlen, 1))) - return -TARGET_EFAULT; - if (!(holdp = lock_user(VERIFY_WRITE, oldp, oldlen, 0))) - return -TARGET_EFAULT; - holdlen = oldlen; - for (p = hnamep, q = snamep, i = 0; i < namelen; p++, i++) - *q++ = tswap32(*p); - oidfmt(snamep, namelen, NULL, &kind); - /* XXX swap hnewp */ - ret = get_errno(sysctl(snamep, namelen, holdp, &holdlen, hnewp, newlen)); - if (!ret) - sysctl_oldcvt(holdp, holdlen, kind); - put_user_ual(holdlen, oldlenp); - unlock_user(hnamep, namep, 0); - unlock_user(holdp, oldp, holdlen); - if (hnewp) - unlock_user(hnewp, newp, 0); - g_free(snamep); - return ret; -} -#endif - -/* FIXME - * lock_iovec()/unlock_iovec() have a return code of 0 for success where - * other lock functions have a return code of 0 for failure. - */ -static abi_long lock_iovec(int type, struct iovec *vec, abi_ulong target_addr, - int count, int copy) -{ - struct target_iovec *target_vec; - abi_ulong base; - int i; - - target_vec = lock_user(VERIFY_READ, target_addr, count * sizeof(struct target_iovec), 1); - if (!target_vec) - return -TARGET_EFAULT; - for (i = 0;i < count; i++) { - base = tswapl(target_vec[i].iov_base); - vec[i].iov_len = tswapl(target_vec[i].iov_len); - if (vec[i].iov_len != 0) { - vec[i].iov_base = lock_user(type, base, vec[i].iov_len, copy); - /* Don't check lock_user return value. We must call writev even - if a element has invalid base address. */ - } else { - /* zero length pointer is ignored */ - vec[i].iov_base = NULL; - } - } - unlock_user (target_vec, target_addr, 0); - return 0; -} - -static abi_long unlock_iovec(struct iovec *vec, abi_ulong target_addr, - int count, int copy) -{ - struct target_iovec *target_vec; - abi_ulong base; - int i; - - target_vec = lock_user(VERIFY_READ, target_addr, count * sizeof(struct target_iovec), 1); - if (!target_vec) - return -TARGET_EFAULT; - for (i = 0;i < count; i++) { - if (target_vec[i].iov_base) { - base = tswapl(target_vec[i].iov_base); - unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); - } - } - unlock_user (target_vec, target_addr, 0); - - return 0; -} - -/* do_syscall() should always have a single exit point at the end so - that actions, such as logging of syscall results, can be performed. - All errnos that do_syscall() returns must be -TARGET_. */ -abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1, - abi_long arg2, abi_long arg3, abi_long arg4, - abi_long arg5, abi_long arg6, abi_long arg7, - abi_long arg8) -{ - CPUState *cpu = env_cpu(cpu_env); - abi_long ret; - void *p; - -#ifdef DEBUG - gemu_log("freebsd syscall %d\n", num); -#endif - record_syscall_start(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0); - - if (do_strace) - print_freebsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6); - - switch (num) { - case TARGET_FREEBSD_NR_exit: -#ifdef CONFIG_GPROF - _mcleanup(); -#endif - gdb_exit(arg1); - qemu_plugin_user_exit(); - /* XXX: should free thread stack and CPU env */ - _exit(arg1); - ret = 0; /* avoid warning */ - break; - case TARGET_FREEBSD_NR_read: - if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) - goto efault; - ret = get_errno(read(arg1, p, arg3)); - unlock_user(p, arg2, ret); - break; - case TARGET_FREEBSD_NR_write: - if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) - goto efault; - ret = get_errno(write(arg1, p, arg3)); - unlock_user(p, arg2, 0); - break; - case TARGET_FREEBSD_NR_writev: - { - int count = arg3; - struct iovec *vec; - - vec = alloca(count * sizeof(struct iovec)); - if (lock_iovec(VERIFY_READ, vec, arg2, count, 1) < 0) - goto efault; - ret = get_errno(writev(arg1, vec, count)); - unlock_iovec(vec, arg2, count, 0); - } - break; - case TARGET_FREEBSD_NR_open: - if (!(p = lock_user_string(arg1))) - goto efault; - ret = get_errno(open(path(p), - target_to_host_bitmask(arg2, fcntl_flags_tbl), - arg3)); - unlock_user(p, arg1, 0); - break; - case TARGET_FREEBSD_NR_mmap: - ret = get_errno(target_mmap(arg1, arg2, arg3, - target_to_host_bitmask(arg4, mmap_flags_tbl), - arg5, - arg6)); - break; - case TARGET_FREEBSD_NR_mprotect: - ret = get_errno(target_mprotect(arg1, arg2, arg3)); - break; - case TARGET_FREEBSD_NR_break: - ret = do_obreak(arg1); - break; -#ifdef __FreeBSD__ - case TARGET_FREEBSD_NR___sysctl: - ret = do_freebsd_sysctl(arg1, arg2, arg3, arg4, arg5, arg6); - break; -#endif - case TARGET_FREEBSD_NR_sysarch: - ret = do_freebsd_sysarch(cpu_env, arg1, arg2); - break; - case TARGET_FREEBSD_NR_syscall: - case TARGET_FREEBSD_NR___syscall: - ret = do_freebsd_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,arg7,arg8,0); - break; - default: - ret = get_errno(syscall(num, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8)); - break; - } - fail: -#ifdef DEBUG - gemu_log(" = %ld\n", ret); -#endif - if (do_strace) - print_freebsd_syscall_ret(num, ret); - - record_syscall_return(cpu, num, ret); - return ret; - efault: - ret = -TARGET_EFAULT; - goto fail; -} - -abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1, - abi_long arg2, abi_long arg3, abi_long arg4, - abi_long arg5, abi_long arg6) -{ - CPUState *cpu = env_cpu(cpu_env); - abi_long ret; - void *p; - -#ifdef DEBUG - gemu_log("netbsd syscall %d\n", num); -#endif - - record_syscall_start(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0); - - if (do_strace) - print_netbsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6); - - switch (num) { - case TARGET_NETBSD_NR_exit: -#ifdef CONFIG_GPROF - _mcleanup(); -#endif - gdb_exit(arg1); - qemu_plugin_user_exit(); - /* XXX: should free thread stack and CPU env */ - _exit(arg1); - ret = 0; /* avoid warning */ - break; - case TARGET_NETBSD_NR_read: - if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) - goto efault; - ret = get_errno(read(arg1, p, arg3)); - unlock_user(p, arg2, ret); - break; - case TARGET_NETBSD_NR_write: - if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) - goto efault; - ret = get_errno(write(arg1, p, arg3)); - unlock_user(p, arg2, 0); - break; - case TARGET_NETBSD_NR_open: - if (!(p = lock_user_string(arg1))) - goto efault; - ret = get_errno(open(path(p), - target_to_host_bitmask(arg2, fcntl_flags_tbl), - arg3)); - unlock_user(p, arg1, 0); - break; - case TARGET_NETBSD_NR_mmap: - ret = get_errno(target_mmap(arg1, arg2, arg3, - target_to_host_bitmask(arg4, mmap_flags_tbl), - arg5, - arg6)); - break; - case TARGET_NETBSD_NR_mprotect: - ret = get_errno(target_mprotect(arg1, arg2, arg3)); - break; - case TARGET_NETBSD_NR_syscall: - case TARGET_NETBSD_NR___syscall: - ret = do_netbsd_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,0); - break; - default: - ret = syscall(num, arg1, arg2, arg3, arg4, arg5, arg6); - break; - } - fail: -#ifdef DEBUG - gemu_log(" = %ld\n", ret); -#endif - if (do_strace) - print_netbsd_syscall_ret(num, ret); - - record_syscall_return(cpu, num, ret); - return ret; - efault: - ret = -TARGET_EFAULT; - goto fail; -} - -abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1, - abi_long arg2, abi_long arg3, abi_long arg4, - abi_long arg5, abi_long arg6) -{ - CPUState *cpu = env_cpu(cpu_env); - abi_long ret; - void *p; - -#ifdef DEBUG - gemu_log("openbsd syscall %d\n", num); -#endif - - record_syscall_start(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0); - - if (do_strace) - print_openbsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6); - - switch (num) { - case TARGET_OPENBSD_NR_exit: -#ifdef CONFIG_GPROF - _mcleanup(); -#endif - gdb_exit(arg1); - qemu_plugin_user_exit(); - /* XXX: should free thread stack and CPU env */ - _exit(arg1); - ret = 0; /* avoid warning */ - break; - case TARGET_OPENBSD_NR_read: - if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) - goto efault; - ret = get_errno(read(arg1, p, arg3)); - unlock_user(p, arg2, ret); - break; - case TARGET_OPENBSD_NR_write: - if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) - goto efault; - ret = get_errno(write(arg1, p, arg3)); - unlock_user(p, arg2, 0); - break; - case TARGET_OPENBSD_NR_open: - if (!(p = lock_user_string(arg1))) - goto efault; - ret = get_errno(open(path(p), - target_to_host_bitmask(arg2, fcntl_flags_tbl), - arg3)); - unlock_user(p, arg1, 0); - break; - case TARGET_OPENBSD_NR_mmap: - ret = get_errno(target_mmap(arg1, arg2, arg3, - target_to_host_bitmask(arg4, mmap_flags_tbl), - arg5, - arg6)); - break; - case TARGET_OPENBSD_NR_mprotect: - ret = get_errno(target_mprotect(arg1, arg2, arg3)); - break; - case TARGET_OPENBSD_NR_syscall: - case TARGET_OPENBSD_NR___syscall: - ret = do_openbsd_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,0); - break; - default: - ret = syscall(num, arg1, arg2, arg3, arg4, arg5, arg6); - break; - } - fail: -#ifdef DEBUG - gemu_log(" = %ld\n", ret); -#endif - if (do_strace) - print_openbsd_syscall_ret(num, ret); - - record_syscall_return(cpu, num, ret); - return ret; - efault: - ret = -TARGET_EFAULT; - goto fail; -} - -void syscall_init(void) -{ -} -- 2.33.1