| Message ID | 20220201111455.52511-12-imp@bsdimp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | bsd-user: Start upstreaming the system calls. | expand |
On Tue, Feb 1, 2022 at 5:15 AM Warner Losh <imp@bsdimp.com> wrote: > > Signed-off-by: Warner Losh <imp@bsdimp.com> > --- > bsd-user/syscall.c | 516 --------------------------------------------- > 1 file changed, 516 deletions(-) > delete mode 100644 bsd-user/syscall.c > Reviewed-by: Kyle Evans <kevans@FreeBSD.org> > 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 <http://www.gnu.org/licenses/>. > - */ > -#include "qemu/osdep.h" > -#include "qemu/cutils.h" > -#include "qemu/path.h" > -#include <sys/syscall.h> > -#include <sys/param.h> > -#include <sys/sysctl.h> > -#include <utime.h> > - > -#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_<errcode>. */ > -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 >
On 2/1/22 22:14, Warner Losh wrote: > Signed-off-by: Warner Losh<imp@bsdimp.com> > --- > bsd-user/syscall.c | 516 --------------------------------------------- > 1 file changed, 516 deletions(-) > delete mode 100644 bsd-user/syscall.c Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
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 <http://www.gnu.org/licenses/>. - */ -#include "qemu/osdep.h" -#include "qemu/cutils.h" -#include "qemu/path.h" -#include <sys/syscall.h> -#include <sys/param.h> -#include <sys/sysctl.h> -#include <utime.h> - -#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_<errcode>. */ -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) -{ -}
Signed-off-by: Warner Losh <imp@bsdimp.com> --- bsd-user/syscall.c | 516 --------------------------------------------- 1 file changed, 516 deletions(-) delete mode 100644 bsd-user/syscall.c