diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2016-06-29 10:43:07 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-06-29 10:43:08 +0100 |
| commit | 3e904d6ade7f363c64b3c54c5d14372b8a9e6892 (patch) | |
| tree | 6cffcbf0eac7b0894a39002ae8b76cc8813d248d | |
| parent | d7f30403576f04f1f3a5fb5a1d18cba8dfa7a6d2 (diff) | |
| parent | 4ba92cd736a9ce0dc83c9b16a75d24d385e1cdf3 (diff) | |
| download | qemu-3e904d6ade7f363c64b3c54c5d14372b8a9e6892.zip | |
Merge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20160628' into staging
Drop building linux-user targets on HPPA or m68k host systems
and add safe_syscall support for i386, aarch64, arm, ppc64 and
s390x.
# gpg: Signature made Tue 28 Jun 2016 19:31:16 BST
# gpg: using RSA key 0xB44890DEDE3C9BC0
# gpg: Good signature from "Riku Voipio <riku.voipio@iki.fi>"
# gpg: aka "Riku Voipio <riku.voipio@linaro.org>"
# Primary key fingerprint: FF82 03C8 C391 98AE 0581 41EF B448 90DE DE3C 9BC0
* remotes/riku/tags/pull-linux-user-20160628: (24 commits)
linux-user: Provide safe_syscall for ppc64
linux-user: Provide safe_syscall for s390x
linux-user: Provide safe_syscall for aarch64
linux-user: Provide safe_syscall for arm
linux-user: Provide safe_syscall for i386
linux-user: fix x86_64 safe_syscall
linux-user: don't swap NLMSG_DATA() fields
linux-user: fd_trans_host_to_target_data() must process only received data
linux-user: add missing return in netlink switch statement
linux-user: update get_thread_area/set_thread_area strace
linux-user: fix clone() strace
linux-user: add socket() strace
linux-user: add socketcall() strace
linux-user: Support F_GETPIPE_SZ and F_SETPIPE_SZ fcntls
linux-user: Fix wrong type used for argument to rt_sigqueueinfo
linux-user: Create a hostdep.h for each host architecture
user-exec: Remove unused code for OSX hosts
user-exec: Delete now-unused hppa and m68k cpu_signal_handler() code
configure: Don't allow user-only targets for unknown CPU architectures
configure: Don't override ARCH=unknown if enabling TCI
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
27 files changed, 1643 insertions, 331 deletions
diff --git a/Makefile.target b/Makefile.target index d720b3e733..a440bcb5b8 100644 --- a/Makefile.target +++ b/Makefile.target @@ -108,11 +108,8 @@ obj-$(CONFIG_LIBDECNUMBER) += libdecnumber/dpd/decimal128.o ifdef CONFIG_LINUX_USER -# Note that we only add linux-user/host/$ARCH if it exists, and -# that it must come before linux-user/host/generic in the search path. QEMU_CFLAGS+=-I$(SRC_PATH)/linux-user/$(TARGET_ABI_DIR) \ - $(patsubst %,-I%,$(wildcard $(SRC_PATH)/linux-user/host/$(ARCH))) \ - -I$(SRC_PATH)/linux-user/host/generic \ + -I$(SRC_PATH)/linux-user/host/$(ARCH) \ -I$(SRC_PATH)/linux-user obj-y += linux-user/ @@ -1216,6 +1216,13 @@ esac QEMU_CFLAGS="$CPU_CFLAGS $QEMU_CFLAGS" EXTRA_CFLAGS="$CPU_CFLAGS $EXTRA_CFLAGS" +# For user-mode emulation the host arch has to be one we explicitly +# support, even if we're using TCI. +if [ "$ARCH" = "unknown" ]; then + bsd_user="no" + linux_user="no" +fi + default_target_list="" mak_wilds="" @@ -1380,7 +1387,6 @@ fi if test "$ARCH" = "unknown"; then if test "$tcg_interpreter" = "yes" ; then echo "Unsupported CPU = $cpu, will use TCG with TCI (experimental)" - ARCH=tci else error_exit "Unsupported CPU = $cpu, try --enable-tcg-interpreter" fi diff --git a/linux-user/host/aarch64/hostdep.h b/linux-user/host/aarch64/hostdep.h new file mode 100644 index 0000000000..b79eaf1811 --- /dev/null +++ b/linux-user/host/aarch64/hostdep.h @@ -0,0 +1,38 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +/* We have a safe-syscall.inc.S */ +#define HAVE_SAFE_SYSCALL + +#ifndef __ASSEMBLER__ + +/* These are defined by the safe-syscall.inc.S file */ +extern char safe_syscall_start[]; +extern char safe_syscall_end[]; + +/* Adjust the signal context to rewind out of safe-syscall if we're in it */ +static inline void rewind_if_in_safe_syscall(void *puc) +{ + struct ucontext *uc = puc; + __u64 *pcreg = &uc->uc_mcontext.pc; + + if (*pcreg > (uintptr_t)safe_syscall_start + && *pcreg < (uintptr_t)safe_syscall_end) { + *pcreg = (uintptr_t)safe_syscall_start; + } +} + +#endif /* __ASSEMBLER__ */ + +#endif diff --git a/linux-user/host/aarch64/safe-syscall.inc.S b/linux-user/host/aarch64/safe-syscall.inc.S new file mode 100644 index 0000000000..58a2329b37 --- /dev/null +++ b/linux-user/host/aarch64/safe-syscall.inc.S @@ -0,0 +1,75 @@ +/* + * safe-syscall.inc.S : host-specific assembly fragment + * to handle signals occurring at the same time as system calls. + * This is intended to be included by linux-user/safe-syscall.S + * + * Written by Richard Henderson <rth@twiddle.net> + * Copyright (C) 2016 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + + .global safe_syscall_base + .global safe_syscall_start + .global safe_syscall_end + .type safe_syscall_base, #function + .type safe_syscall_start, #function + .type safe_syscall_end, #function + + /* This is the entry point for making a system call. The calling + * convention here is that of a C varargs function with the + * first argument an 'int *' to the signal_pending flag, the + * second one the system call number (as a 'long'), and all further + * arguments being syscall arguments (also 'long'). + * We return a long which is the syscall's return value, which + * may be negative-errno on failure. Conversion to the + * -1-and-errno-set convention is done by the calling wrapper. + */ +safe_syscall_base: + .cfi_startproc + /* The syscall calling convention isn't the same as the + * C one: + * we enter with x0 == *signal_pending + * x1 == syscall number + * x2 ... x7, (stack) == syscall arguments + * and return the result in x0 + * and the syscall instruction needs + * x8 == syscall number + * x0 ... x7 == syscall arguments + * and returns the result in x0 + * Shuffle everything around appropriately. + */ + mov x9, x0 /* signal_pending pointer */ + mov x8, x1 /* syscall number */ + mov x0, x2 /* syscall arguments */ + mov x1, x3 + mov x2, x4 + mov x3, x5 + mov x4, x6 + mov x6, x7 + ldr x7, [sp] + + /* This next sequence of code works in conjunction with the + * rewind_if_safe_syscall_function(). If a signal is taken + * and the interrupted PC is anywhere between 'safe_syscall_start' + * and 'safe_syscall_end' then we rewind it to 'safe_syscall_start'. + * The code sequence must therefore be able to cope with this, and + * the syscall instruction must be the final one in the sequence. + */ +safe_syscall_start: + /* if signal_pending is non-zero, don't do the call */ + ldr w10, [x9] + cbnz w10, 0f + svc 0x0 +safe_syscall_end: + /* code path for having successfully executed the syscall */ + ret + +0: + /* code path when we didn't execute the syscall */ + mov x0, #-TARGET_ERESTARTSYS + ret + .cfi_endproc + + .size safe_syscall_base, .-safe_syscall_base diff --git a/linux-user/host/arm/hostdep.h b/linux-user/host/arm/hostdep.h new file mode 100644 index 0000000000..8e1ff2ffc5 --- /dev/null +++ b/linux-user/host/arm/hostdep.h @@ -0,0 +1,38 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +/* We have a safe-syscall.inc.S */ +#define HAVE_SAFE_SYSCALL + +#ifndef __ASSEMBLER__ + +/* These are defined by the safe-syscall.inc.S file */ +extern char safe_syscall_start[]; +extern char safe_syscall_end[]; + +/* Adjust the signal context to rewind out of safe-syscall if we're in it */ +static inline void rewind_if_in_safe_syscall(void *puc) +{ + struct ucontext *uc = puc; + unsigned long *pcreg = &uc->uc_mcontext.arm_pc; + + if (*pcreg > (uintptr_t)safe_syscall_start + && *pcreg < (uintptr_t)safe_syscall_end) { + *pcreg = (uintptr_t)safe_syscall_start; + } +} + +#endif /* __ASSEMBLER__ */ + +#endif diff --git a/linux-user/host/arm/safe-syscall.inc.S b/linux-user/host/arm/safe-syscall.inc.S new file mode 100644 index 0000000000..88c4958504 --- /dev/null +++ b/linux-user/host/arm/safe-syscall.inc.S @@ -0,0 +1,90 @@ +/* + * safe-syscall.inc.S : host-specific assembly fragment + * to handle signals occurring at the same time as system calls. + * This is intended to be included by linux-user/safe-syscall.S + * + * Written by Richard Henderson <rth@twiddle.net> + * Copyright (C) 2016 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + + .global safe_syscall_base + .global safe_syscall_start + .global safe_syscall_end + .type safe_syscall_base, %function + + .cfi_sections .debug_frame + + .text + .syntax unified + .arm + .align 2 + + /* This is the entry point for making a system call. The calling + * convention here is that of a C varargs function with the + * first argument an 'int *' to the signal_pending flag, the + * second one the system call number (as a 'long'), and all further + * arguments being syscall arguments (also 'long'). + * We return a long which is the syscall's return value, which + * may be negative-errno on failure. Conversion to the + * -1-and-errno-set convention is done by the calling wrapper. + */ +safe_syscall_base: + .fnstart + .cfi_startproc + mov r12, sp /* save entry stack */ + push { r4, r5, r6, r7, r8, lr } + .save { r4, r5, r6, r7, r8, lr } + .cfi_adjust_cfa_offset 24 + .cfi_rel_offset r4, 0 + .cfi_rel_offset r5, 4 + .cfi_rel_offset r6, 8 + .cfi_rel_offset r7, 12 + .cfi_rel_offset r8, 16 + .cfi_rel_offset lr, 20 + + /* The syscall calling convention isn't the same as the C one: + * we enter with r0 == *signal_pending + * r1 == syscall number + * r2, r3, [sp+0] ... [sp+12] == syscall arguments + * and return the result in r0 + * and the syscall instruction needs + * r7 == syscall number + * r0 ... r6 == syscall arguments + * and returns the result in r0 + * Shuffle everything around appropriately. + * Note the 16 bytes that we pushed to save registers. + */ + mov r8, r0 /* copy signal_pending */ + mov r7, r1 /* syscall number */ + mov r0, r2 /* syscall args */ + mov r1, r3 + ldm r12, { r2, r3, r4, r5, r6 } + + /* This next sequence of code works in conjunction with the + * rewind_if_safe_syscall_function(). If a signal is taken + * and the interrupted PC is anywhere between 'safe_syscall_start' + * and 'safe_syscall_end' then we rewind it to 'safe_syscall_start'. + * The code sequence must therefore be able to cope with this, and + * the syscall instruction must be the final one in the sequence. + */ +safe_syscall_start: + /* if signal_pending is non-zero, don't do the call */ + ldr r12, [r8] /* signal_pending */ + tst r12, r12 + bne 1f + swi 0 +safe_syscall_end: + /* code path for having successfully executed the syscall */ + pop { r4, r5, r6, r7, r8, pc } + +1: + /* code path when we didn't execute the syscall */ + ldr r0, =-TARGET_ERESTARTSYS + pop { r4, r5, r6, r7, r8, pc } + .fnend + .cfi_endproc + + .size safe_syscall_base, .-safe_syscall_base diff --git a/linux-user/host/i386/hostdep.h b/linux-user/host/i386/hostdep.h new file mode 100644 index 0000000000..5a12f4adce --- /dev/null +++ b/linux-user/host/i386/hostdep.h @@ -0,0 +1,38 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +/* We have a safe-syscall.inc.S */ +#define HAVE_SAFE_SYSCALL + +#ifndef __ASSEMBLER__ + +/* These are defined by the safe-syscall.inc.S file */ +extern char safe_syscall_start[]; +extern char safe_syscall_end[]; + +/* Adjust the signal context to rewind out of safe-syscall if we're in it */ +static inline void rewind_if_in_safe_syscall(void *puc) +{ + struct ucontext *uc = puc; + greg_t *pcreg = &uc->uc_mcontext.gregs[REG_EIP]; + + if (*pcreg > (uintptr_t)safe_syscall_start + && *pcreg < (uintptr_t)safe_syscall_end) { + *pcreg = (uintptr_t)safe_syscall_start; + } +} + +#endif /* __ASSEMBLER__ */ + +#endif diff --git a/linux-user/host/i386/safe-syscall.inc.S b/linux-user/host/i386/safe-syscall.inc.S new file mode 100644 index 0000000000..766d0ded98 --- /dev/null +++ b/linux-user/host/i386/safe-syscall.inc.S @@ -0,0 +1,112 @@ +/* + * safe-syscall.inc.S : host-specific assembly fragment + * to handle signals occurring at the same time as system calls. + * This is intended to be included by linux-user/safe-syscall.S + * + * Written by Richard Henderson <rth@twiddle.net> + * Copyright (C) 2016 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + + .global safe_syscall_base + .global safe_syscall_start + .global safe_syscall_end + .type safe_syscall_base, @function + + /* This is the entry point for making a system call. The calling + * convention here is that of a C varargs function with the + * first argument an 'int *' to the signal_pending flag, the + * second one the system call number (as a 'long'), and all further + * arguments being syscall arguments (also 'long'). + * We return a long which is the syscall's return value, which + * may be negative-errno on failure. Conversion to the + * -1-and-errno-set convention is done by the calling wrapper. + */ +safe_syscall_base: + .cfi_startproc + push %ebp + .cfi_adjust_cfa_offset 4 + .cfi_rel_offset ebp, 0 + push %esi + .cfi_adjust_cfa_offset 4 + .cfi_rel_offset esi, 0 + push %edi + .cfi_adjust_cfa_offset 4 + .cfi_rel_offset edi, 0 + push %ebx + .cfi_adjust_cfa_offset 4 + .cfi_rel_offset ebx, 0 + + /* The syscall calling convention isn't the same as the C one: + * we enter with 0(%esp) == return address + * 4(%esp) == *signal_pending + * 8(%esp) == syscall number + * 12(%esp) ... 32(%esp) == syscall arguments + * and return the result in eax + * and the syscall instruction needs + * eax == syscall number + * ebx, ecx, edx, esi, edi, ebp == syscall arguments + * and returns the result in eax + * Shuffle everything around appropriately. + * Note the 16 bytes that we pushed to save registers. + */ + mov 12+16(%esp), %ebx /* the syscall arguments */ + mov 16+16(%esp), %ecx + mov 20+16(%esp), %edx + mov 24+16(%esp), %esi + mov 28+16(%esp), %edi + mov 32+16(%esp), %ebp + + /* This next sequence of code works in conjunction with the + * rewind_if_safe_syscall_function(). If a signal is taken + * and the interrupted PC is anywhere between 'safe_syscall_start' + * and 'safe_syscall_end' then we rewind it to 'safe_syscall_start'. + * The code sequence must therefore be able to cope with this, and + * the syscall instruction must be the final one in the sequence. + */ +safe_syscall_start: + /* if signal_pending is non-zero, don't do the call */ + mov 4+16(%esp), %eax /* signal_pending */ + cmp $0, (%eax) + jnz 1f + mov 8+16(%esp), %eax /* syscall number */ + int $0x80 +safe_syscall_end: + /* code path for having successfully executed the syscall */ + pop %ebx + .cfi_remember_state + .cfi_def_cfa_offset -4 + .cfi_restore ebx + pop %edi + .cfi_def_cfa_offset -4 + .cfi_restore edi + pop %esi + .cfi_def_cfa_offset -4 + .cfi_restore esi + pop %ebp + .cfi_def_cfa_offset -4 + .cfi_restore ebp + ret + +1: + /* code path when we didn't execute the syscall */ + .cfi_restore_state + mov $-TARGET_ERESTARTSYS, %eax + pop %ebx + .cfi_def_cfa_offset -4 + .cfi_restore ebx + pop %edi + .cfi_def_cfa_offset -4 + .cfi_restore edi + pop %esi + .cfi_def_cfa_offset -4 + .cfi_restore esi + pop %ebp + .cfi_def_cfa_offset -4 + .cfi_restore ebp + ret + .cfi_endproc + + .size safe_syscall_base, .-safe_syscall_base diff --git a/linux-user/host/generic/hostdep.h b/linux-user/host/ia64/hostdep.h index cfabc3590b..7609bf5cd7 100644 --- a/linux-user/host/generic/hostdep.h +++ b/linux-user/host/ia64/hostdep.h @@ -1,6 +1,5 @@ /* - * hostdep.h : fallback generic version of header for things - * which are dependent on the host architecture + * hostdep.h : things which are dependent on the host architecture * * * Written by Peter Maydell <peter.maydell@linaro.org> * @@ -13,8 +12,4 @@ #ifndef QEMU_HOSTDEP_H #define QEMU_HOSTDEP_H -/* This is the fallback header which is only used if the host - * architecture doesn't provide one in linux-user/host/$ARCH. - */ - #endif diff --git a/linux-user/host/mips/hostdep.h b/linux-user/host/mips/hostdep.h new file mode 100644 index 0000000000..7609bf5cd7 --- /dev/null +++ b/linux-user/host/mips/hostdep.h @@ -0,0 +1,15 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +#endif diff --git a/linux-user/host/ppc/hostdep.h b/linux-user/host/ppc/hostdep.h new file mode 100644 index 0000000000..7609bf5cd7 --- /dev/null +++ b/linux-user/host/ppc/hostdep.h @@ -0,0 +1,15 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +#endif diff --git a/linux-user/host/ppc64/hostdep.h b/linux-user/host/ppc64/hostdep.h new file mode 100644 index 0000000000..310e7d1b73 --- /dev/null +++ b/linux-user/host/ppc64/hostdep.h @@ -0,0 +1,38 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +/* We have a safe-syscall.inc.S */ +#define HAVE_SAFE_SYSCALL + +#ifndef __ASSEMBLER__ + +/* These are defined by the safe-syscall.inc.S file */ +extern char safe_syscall_start[]; +extern char safe_syscall_end[]; + +/* Adjust the signal context to rewind out of safe-syscall if we're in it */ +static inline void rewind_if_in_safe_syscall(void *puc) +{ + struct ucontext *uc = puc; + unsigned long *pcreg = &uc->uc_mcontext.gp_regs[PT_NIP]; + + if (*pcreg > (uintptr_t)safe_syscall_start + && *pcreg < (uintptr_t)safe_syscall_end) { + *pcreg = (uintptr_t)safe_syscall_start; + } +} + +#endif /* __ASSEMBLER__ */ + +#endif diff --git a/linux-user/host/ppc64/safe-syscall.inc.S b/linux-user/host/ppc64/safe-syscall.inc.S new file mode 100644 index 0000000000..d30050a67c --- /dev/null +++ b/linux-user/host/ppc64/safe-syscall.inc.S @@ -0,0 +1,92 @@ +/* + * safe-syscall.inc.S : host-specific assembly fragment + * to handle signals occurring at the same time as system calls. + * This is intended to be included by linux-user/safe-syscall.S + * + * Written by Richard Henderson <rth@twiddle.net> + * Copyright (C) 2016 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + + .global safe_syscall_base + .global safe_syscall_start + .global safe_syscall_end + .type safe_syscall_base, @function + + .text + + /* This is the entry point for making a system call. The calling + * convention here is that of a C varargs function with the + * first argument an 'int *' to the signal_pending flag, the + * second one the system call number (as a 'long'), and all further + * arguments being syscall arguments (also 'long'). + * We return a long which is the syscall's return value, which + * may be negative-errno on failure. Conversion to the + * -1-and-errno-set convention is done by the calling wrapper. + */ +#if _CALL_ELF == 2 +safe_syscall_base: + .cfi_startproc + .localentry safe_syscall_base,0 +#else + .section ".opd","aw" + .align 3 +safe_syscall_base: + .quad .L.safe_syscall_base,.TOC.@tocbase,0 + .previous +.L.safe_syscall_base: + .cfi_startproc +#endif + /* We enter with r3 == *signal_pending + * r4 == syscall number + * r5 ... r10 == syscall arguments + * and return the result in r3 + * and the syscall instruction needs + * r0 == syscall number + * r3 ... r8 == syscall arguments + * and returns the result in r3 + * Shuffle everything around appropriately. + */ + mr 11, 3 /* signal_pending */ + mr 0, 4 /* syscall number */ + mr 3, 5 /* syscall arguments */ + mr 4, 6 + mr 5, 7 + mr 6, 8 + mr 7, 9 + mr 8, 10 + + /* This next sequence of code works in conjunction with the + * rewind_if_safe_syscall_function(). If a signal is taken + * and the interrupted PC is anywhere between 'safe_syscall_start' + * and 'safe_syscall_end' then we rewind it to 'safe_syscall_start'. + * The code sequence must therefore be able to cope with this, and + * the syscall instruction must be the final one in the sequence. + */ +safe_syscall_start: + /* if signal_pending is non-zero, don't do the call */ + lwz 12, 0(11) + cmpwi 0, 12, 0 + bne- 0f + sc +safe_syscall_end: + /* code path when we did execute the syscall */ + bnslr+ + + /* syscall failed; return negative errno */ + neg 3, 3 + blr + + /* code path when we didn't execute the syscall */ +0: addi 3, 0, -TARGET_ERESTARTSYS + blr + .cfi_endproc + +#if _CALL_ELF == 2 + .size safe_syscall_base, .-safe_syscall_base +#else + .size safe_syscall_base, .-.L.safe_syscall_base + .size .L.safe_syscall_base, .-.L.safe_syscall_base +#endif diff --git a/linux-user/host/s390/hostdep.h b/linux-user/host/s390/hostdep.h new file mode 100644 index 0000000000..7609bf5cd7 --- /dev/null +++ b/linux-user/host/s390/hostdep.h @@ -0,0 +1,15 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +#endif diff --git a/linux-user/host/s390x/hostdep.h b/linux-user/host/s390x/hostdep.h new file mode 100644 index 0000000000..e95871c46a --- /dev/null +++ b/linux-user/host/s390x/hostdep.h @@ -0,0 +1,38 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +/* We have a safe-syscall.inc.S */ +#define HAVE_SAFE_SYSCALL + +#ifndef __ASSEMBLER__ + +/* These are defined by the safe-syscall.inc.S file */ +extern char safe_syscall_start[]; +extern char safe_syscall_end[]; + +/* Adjust the signal context to rewind out of safe-syscall if we're in it */ +static inline void rewind_if_in_safe_syscall(void *puc) +{ + struct ucontext *uc = puc; + unsigned long *pcreg = &uc->uc_mcontext.psw.addr; + + if (*pcreg > (uintptr_t)safe_syscall_start + && *pcreg < (uintptr_t)safe_syscall_end) { + *pcreg = (uintptr_t)safe_syscall_start; + } +} + +#endif /* __ASSEMBLER__ */ + +#endif diff --git a/linux-user/host/s390x/safe-syscall.inc.S b/linux-user/host/s390x/safe-syscall.inc.S new file mode 100644 index 0000000000..f1b446abf6 --- /dev/null +++ b/linux-user/host/s390x/safe-syscall.inc.S @@ -0,0 +1,90 @@ +/* + * safe-syscall.inc.S : host-specific assembly fragment + * to handle signals occurring at the same time as system calls. + * This is intended to be included by linux-user/safe-syscall.S + * + * Written by Richard Henderson <rth@twiddle.net> + * Copyright (C) 2016 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + + .global safe_syscall_base + .global safe_syscall_start + .global safe_syscall_end + .type safe_syscall_base, @function + + /* This is the entry point for making a system call. The calling + * convention here is that of a C varargs function with the + * first argument an 'int *' to the signal_pending flag, the + * second one the system call number (as a 'long'), and all further + * arguments being syscall arguments (also 'long'). + * We return a long which is the syscall's return value, which + * may be negative-errno on failure. Conversion to the + * -1-and-errno-set convention is done by the calling wrapper. + */ +safe_syscall_base: + .cfi_startproc + stmg %r6,%r15,48(%r15) /* save all call-saved registers */ + .cfi_offset %r15,-40 + .cfi_offset %r14,-48 + .cfi_offset %r13,-56 + .cfi_offset %r12,-64 + .cfi_offset %r11,-72 + .cfi_offset %r10,-80 + .cfi_offset %r9,-88 + .cfi_offset %r8,-96 + .cfi_offset %r7,-104 + .cfi_offset %r6,-112 + lgr %r1,%r15 + lg %r0,8(%r15) /* load eos */ + aghi %r15,-160 + .cfi_adjust_cfa_offset 160 + stg %r1,0(%r15) /* store back chain */ + stg %r0,8(%r15) /* store eos */ + + /* The syscall calling convention isn't the same as the + * C one: + * we enter with r2 == *signal_pending + * r3 == syscall number + * r4, r5, r6, (stack) == syscall arguments + * and return the result in r2 + * and the syscall instruction needs + * r1 == syscall number + * r2 ... r7 == syscall arguments + * and returns the result in r2 + * Shuffle everything around appropriately. + */ + lgr %r8,%r2 /* signal_pending pointer */ + lgr %r1,%r3 /* syscall number */ + lgr %r2,%r4 /* syscall args */ + lgr %r3,%r5 + lgr %r4,%r6 + lmg %r5,%r7,320(%r15) + + /* This next sequence of code works in conjunction with the + * rewind_if_safe_syscall_function(). If a signal is taken + * and the interrupted PC is anywhere between 'safe_syscall_start' + * and 'safe_syscall_end' then we rewind it to 'safe_syscall_start'. + * The code sequence must therefore be able to cope with this, and + * the syscall instruction must be the final one in the sequence. + */ +safe_syscall_start: + /* if signal_pending is non-zero, don't do the call */ + lt %r0,0(%r8) + jne 2f + svc 0 +safe_syscall_end: + +1: lg %r15,0(%r15) /* load back chain */ + .cfi_remember_state + .cfi_adjust_cfa_offset -160 + lmg %r6,%r15,48(%r15) /* load saved registers */ + br %r14 + .cfi_restore_state +2: lghi %r2, -TARGET_ERESTARTSYS + j 1b + .cfi_endproc + + .size safe_syscall_base, .-safe_syscall_base diff --git a/linux-user/host/sparc/hostdep.h b/linux-user/host/sparc/hostdep.h new file mode 100644 index 0000000000..7609bf5cd7 --- /dev/null +++ b/linux-user/host/sparc/hostdep.h @@ -0,0 +1,15 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +#endif diff --git a/linux-user/host/sparc64/hostdep.h b/linux-user/host/sparc64/hostdep.h new file mode 100644 index 0000000000..7609bf5cd7 --- /dev/null +++ b/linux-user/host/sparc64/hostdep.h @@ -0,0 +1,15 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +#endif diff --git a/linux-user/host/x32/hostdep.h b/linux-user/host/x32/hostdep.h new file mode 100644 index 0000000000..7609bf5cd7 --- /dev/null +++ b/linux-user/host/x32/hostdep.h @@ -0,0 +1,15 @@ +/* + * hostdep.h : things which are dependent on the host architecture + * + * * Written by Peter Maydell <peter.maydell@linaro.org> + * + * Copyright (C) 2016 Linaro Limited + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_HOSTDEP_H +#define QEMU_HOSTDEP_H + +#endif diff --git a/linux-user/host/x86_64/safe-syscall.inc.S b/linux-user/host/x86_64/safe-syscall.inc.S index e09368d450..f36992daa3 100644 --- a/linux-user/host/x86_64/safe-syscall.inc.S +++ b/linux-user/host/x86_64/safe-syscall.inc.S @@ -67,8 +67,8 @@ safe_syscall_base: */ safe_syscall_start: /* if signal_pending is non-zero, don't do the call */ - testl $1, (%rbp) - jnz return_ERESTARTSYS + cmpl $0, (%rbp) + jnz 1f syscall safe_syscall_end: /* code path for having successfully executed the syscall */ @@ -78,7 +78,7 @@ safe_syscall_end: .cfi_restore rbp ret -return_ERESTARTSYS: +1: /* code path when we didn't execute the syscall */ .cfi_restore_state mov $-TARGET_ERESTARTSYS, %rax diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 56f29c35b5..e8a5aede95 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -20,6 +20,11 @@ #define THREAD __thread +/* This is the size of the host kernel's sigset_t, needed where we make + * direct system calls that take a sigset_t pointer and a size. + */ +#define SIGSET_T_SIZE (_NSIG / 8) + /* This struct is used to hold certain information about the image. * Basically, it replicates in user space what would be certain * task_struct fields in the kernel diff --git a/linux-user/signal.c b/linux-user/signal.c index 1dadddf2dd..9d980456ec 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -278,6 +278,14 @@ static inline void host_to_target_siginfo_noswap(target_siginfo_t *tinfo, tinfo->si_errno = 0; tinfo->si_code = info->si_code; + /* This memset serves two purposes: + * (1) ensure we don't leak random junk to the guest later + * (2) placate false positives from gcc about fields + * being used uninitialized if it chooses to inline both this + * function and tswap_siginfo() into host_to_target_siginfo(). + */ + memset(tinfo->_sifields._pad, 0, sizeof(tinfo->_sifields._pad)); + /* This is awkward, because we have to use a combination of * the si_code and si_signo to figure out which of the union's * members are valid. (Within the host kernel it is always possible @@ -397,8 +405,9 @@ static void tswap_siginfo(target_siginfo_t *tinfo, void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info) { - host_to_target_siginfo_noswap(tinfo, info); - tswap_siginfo(tinfo, tinfo); + target_siginfo_t tgt_tmp; + host_to_target_siginfo_noswap(&tgt_tmp, info); + tswap_siginfo(tinfo, &tgt_tmp); } /* XXX: we support only POSIX RT signals are used. */ @@ -627,8 +636,16 @@ static void host_signal_handler(int host_signum, siginfo_t *info, * code in case the guest code provokes one in the window between * now and it getting out to the main loop. Signals will be * unblocked again in process_pending_signals(). + * + * WARNING: we cannot use sigfillset() here because the uc_sigmask + * field is a kernel sigset_t, which is much smaller than the + * libc sigset_t which sigfillset() operates on. Using sigfillset() + * would write 0xff bytes off the end of the structure and trash + * data on the struct. + * We can't use sizeof(uc->uc_sigmask) either, because the libc + * headers define the struct field with the wrong (too large) type. */ - sigfillset(&uc->uc_sigmask); + memset(&uc->uc_sigmask, 0xff, SIGSET_T_SIZE); sigdelset(&uc->uc_sigmask, SIGSEGV); sigdelset(&uc->uc_sigmask, SIGBUS); diff --git a/linux-user/strace.c b/linux-user/strace.c index 4046b81705..cc10dc4703 100644 --- a/linux-user/strace.c +++ b/linux-user/strace.c @@ -5,6 +5,9 @@ #include <sys/shm.h> #include <sys/select.h> #include <sys/mount.h> +#include <arpa/inet.h> +#include <netinet/tcp.h> +#include <linux/if_packet.h> #include <sched.h> #include "qemu.h" @@ -57,10 +60,15 @@ UNUSED static void print_open_flags(abi_long, int); UNUSED static void print_syscall_prologue(const struct syscallname *); UNUSED static void print_syscall_epilogue(const struct syscallname *); UNUSED static void print_string(abi_long, int); +UNUSED static void print_buf(abi_long addr, abi_long len, int last); UNUSED static void print_raw_param(const char *, abi_long, int); UNUSED static void print_timeval(abi_ulong, int); UNUSED static void print_number(abi_long, int); UNUSED static void print_signal(abi_ulong, int); +UNUSED static void print_sockaddr(abi_ulong addr, abi_long addrlen); +UNUSED static void print_socket_domain(int domain); +UNUSED static void print_socket_type(int type); +UNUSED static void print_socket_protocol(int domain, int type, int protocol); /* * Utility functions @@ -146,6 +154,165 @@ print_signal(abi_ulong arg, int last) gemu_log("%s%s", signal_name, get_comma(last)); } +static void +print_sockaddr(abi_ulong addr, abi_long addrlen) +{ + struct target_sockaddr *sa; + int i; + int sa_family; + + sa = lock_user(VERIFY_READ, addr, addrlen, 1); + if (sa) { + sa_family = tswap16(sa->sa_family); + switch (sa_family) { + case AF_UNIX: { + struct target_sockaddr_un *un = (struct target_sockaddr_un *)sa; + int i; + gemu_log("{sun_family=AF_UNIX,sun_path=\""); + for (i = 0; i < addrlen - + offsetof(struct target_sockaddr_un, sun_path) && + un->sun_path[i]; i++) { + gemu_log("%c", un->sun_path[i]); + } + gemu_log("\"}"); + break; + } + case AF_INET: { + struct target_sockaddr_in *in = (struct target_sockaddr_in *)sa; + uint8_t *c = (uint8_t *)&in->sin_addr.s_addr; + gemu_log("{sin_family=AF_INET,sin_port=htons(%d),", + ntohs(in->sin_port)); + gemu_log("sin_addr=inet_addr(\"%d.%d.%d.%d\")", + c[0], c[1], c[2], c[3]); + gemu_log("}"); + break; + } + case AF_PACKET: { + struct target_sockaddr_ll *ll = (struct target_sockaddr_ll *)sa; + uint8_t *c = (uint8_t *)&ll->sll_addr; + gemu_log("{sll_family=AF_PACKET," + "sll_protocol=htons(0x%04x),if%d,pkttype=", + ntohs(ll->sll_protocol), ll->sll_ifindex); + switch (ll->sll_pkttype) { + case PACKET_HOST: + gemu_log("PACKET_HOST"); + break; + case PACKET_BROADCAST: + gemu_log("PACKET_BROADCAST"); + break; + case PACKET_MULTICAST: + gemu_log("PACKET_MULTICAST"); + break; + case PACKET_OTHERHOST: + gemu_log("PACKET_OTHERHOST"); + break; + case PACKET_OUTGOING: + gemu_log("PACKET_OUTGOING"); + break; + default: + gemu_log("%d", ll->sll_pkttype); + break; + } + gemu_log(",sll_addr=%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", + c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]); + gemu_log("}"); + break; + } + default: + gemu_log("{sa_family=%d, sa_data={", sa->sa_family); + for (i = 0; i < 13; i++) { + gemu_log("%02x, ", sa->sa_data[i]); + } + gemu_log("%02x}", sa->sa_data[i]); + gemu_log("}"); + break; + } + unlock_user(sa, addr, 0); + } else { + print_raw_param("0x"TARGET_ABI_FMT_lx, addr, 0); + } + gemu_log(", "TARGET_ABI_FMT_ld, addrlen); +} + +static void +print_socket_domain(int domain) +{ + switch (domain) { + case PF_UNIX: + gemu_log("PF_UNIX"); + break; + case PF_INET: + gemu_log("PF_INET"); + break; + case PF_PACKET: + gemu_log("PF_PACKET"); + break; + default: + gemu_log("%d", domain); + break; + } +} + +static void +print_socket_type(int type) +{ + switch (type) { + case TARGET_SOCK_DGRAM: + gemu_log("SOCK_DGRAM"); + break; + case TARGET_SOCK_STREAM: + gemu_log("SOCK_STREAM"); + break; + case TARGET_SOCK_RAW: + gemu_log("SOCK_RAW"); + break; + case TARGET_SOCK_RDM: + gemu_log("SOCK_RDM"); + break; + case TARGET_SOCK_SEQPACKET: + gemu_log("SOCK_SEQPACKET"); + break; + case TARGET_SOCK_PACKET: + gemu_log("SOCK_PACKET"); + break; + } +} + +static void +print_socket_protocol(int domain, int type, int protocol) +{ + if (domain == AF_PACKET || + (domain == AF_INET && type == TARGET_SOCK_PACKET)) { + switch (protocol) { + case 0x0003: + gemu_log("ETH_P_ALL"); + break; + default: + gemu_log("%d", protocol); + } + return; + } + + switch (protocol) { + case IPPROTO_IP: + gemu_log("IPPROTO_IP"); + break; + case IPPROTO_TCP: + gemu_log("IPPROTO_TCP"); + break; + case IPPROTO_UDP: + gemu_log("IPPROTO_UDP"); + break; + case IPPROTO_RAW: + gemu_log("IPPROTO_RAW"); + break; + default: + gemu_log("%d", protocol); + break; + } +} + + #ifdef TARGET_NR__newselect static void print_fdset(int n, abi_ulong target_fds_addr) @@ -497,6 +664,26 @@ UNUSED static struct flags clone_flags[] = { FLAG_END, }; +UNUSED static struct flags msg_flags[] = { + /* send */ + FLAG_GENERIC(MSG_CONFIRM), + FLAG_GENERIC(MSG_DONTROUTE), + FLAG_GENERIC(MSG_DONTWAIT), + FLAG_GENERIC(MSG_EOR), + FLAG_GENERIC(MSG_MORE), + FLAG_GENERIC(MSG_NOSIGNAL), + FLAG_GENERIC(MSG_OOB), + /* recv */ + FLAG_GENERIC(MSG_CMSG_CLOEXEC), + FLAG_GENERIC(MSG_ERRQUEUE), + FLAG_GENERIC(MSG_PEEK), + FLAG_GENERIC(MSG_TRUNC), + FLAG_GENERIC(MSG_WAITALL), + /* recvmsg */ + FLAG_GENERIC(MSG_CTRUNC), + FLAG_END, +}; + /* * print_xxx utility functions. These are used to print syscall * parameters in certain format. All of these have parameter @@ -618,6 +805,36 @@ print_string(abi_long addr, int last) } } +#define MAX_PRINT_BUF 40 +static void +print_buf(abi_long addr, abi_long len, int last) +{ + uint8_t *s; + int i; + + s = lock_user(VERIFY_READ, addr, len, 1); + if (s) { + gemu_log("\""); + for (i = 0; i < MAX_PRINT_BUF && i < len; i++) { + if (isprint(s[i])) { + gemu_log("%c", s[i]); + } else { + gemu_log("\\%o", s[i]); + } + } + gemu_log("\""); + if (i != len) { + gemu_log("..."); + } + if (!last) { + gemu_log(","); + } + unlock_user(s, addr, 0); + } else { + print_pointer(addr, last); + } +} + /* * Prints out raw parameter using given format. Caller needs * to do byte swapping if needed. @@ -740,33 +957,31 @@ print_chmod(const struct syscallname *name, #endif #ifdef TARGET_NR_clone +static void do_print_clone(unsigned int flags, abi_ulong newsp, + abi_ulong parent_tidptr, target_ulong newtls, + abi_ulong child_tidptr) +{ + print_flags(clone_flags, flags, 0); + print_raw_param("child_stack=0x" TARGET_ABI_FMT_lx, newsp, 0); + print_raw_param("parent_tidptr=0x" TARGET_ABI_FMT_lx, parent_tidptr, 0); + print_raw_param("tls=0x" TARGET_ABI_FMT_lx, newtls, 0); + print_raw_param("child_tidptr=0x" TARGET_ABI_FMT_lx, child_tidptr, 1); +} + static void print_clone(const struct syscallname *name, - abi_long arg0, abi_long arg1, abi_long arg2, - abi_long arg3, abi_long arg4, abi_long arg5) + abi_long arg1, abi_long arg2, abi_long arg3, + abi_long arg4, abi_long arg5, abi_long arg6) { print_syscall_prologue(name); -#if defined(TARGET_M68K) - print_flags(clone_flags, arg0, 0); - print_raw_param("newsp=0x" TARGET_ABI_FMT_lx, arg1, 1); -#elif defined(TARGET_SH4) || defined(TARGET_ALPHA) - print_flags(clone_flags, arg0, 0); - print_raw_param("child_stack=0x" TARGET_ABI_FMT_lx, arg1, 0); - print_raw_param("parent_tidptr=0x" TARGET_ABI_FMT_lx, arg2, 0); - print_raw_param("child_tidptr=0x" TARGET_ABI_FMT_lx, arg3, 0); - print_raw_param("tls=0x" TARGET_ABI_FMT_lx, arg4, 1); -#elif defined(TARGET_CRIS) - print_raw_param("child_stack=0x" TARGET_ABI_FMT_lx, arg0, 0); - print_flags(clone_flags, arg1, 0); - print_raw_param("parent_tidptr=0x" TARGET_ABI_FMT_lx, arg2, 0); - print_raw_param("tls=0x" TARGET_ABI_FMT_lx, arg3, 0); - print_raw_param("child_tidptr=0x" TARGET_ABI_FMT_lx, arg4, 1); +#if defined(TARGET_MICROBLAZE) + do_print_clone(arg1, arg2, arg4, arg6, arg5); +#elif defined(TARGET_CLONE_BACKWARDS) + do_print_clone(arg1, arg2, arg3, arg4, arg5); +#elif defined(TARGET_CLONE_BACKWARDS2) + do_print_clone(arg2, arg1, arg3, arg5, arg4); #else - print_flags(clone_flags, arg0, 0); - print_raw_param("child_stack=0x" TARGET_ABI_FMT_lx, arg1, 0); - print_raw_param("parent_tidptr=0x" TARGET_ABI_FMT_lx, arg2, 0); - print_raw_param("tls=0x" TARGET_ABI_FMT_lx, arg3, 0); - print_raw_param("child_tidptr=0x" TARGET_ABI_FMT_lx, arg4, 1); + do_print_clone(arg1, arg2, arg3, arg5, arg4); #endif print_syscall_epilogue(name); } @@ -918,6 +1133,13 @@ print_fcntl(const struct syscallname *name, case TARGET_F_GETLEASE: gemu_log("F_GETLEASE"); break; + case TARGET_F_SETPIPE_SZ: + gemu_log("F_SETPIPE_SZ,"); + print_raw_param(TARGET_ABI_FMT_ld, arg2, 1); + break; + case TARGET_F_GETPIPE_SZ: + gemu_log("F_GETPIPE_SZ"); + break; case TARGET_F_DUPFD_CLOEXEC: gemu_log("F_DUPFD_CLOEXEC,"); print_raw_param(TARGET_ABI_FMT_ld, arg2, 1); @@ -1003,6 +1225,361 @@ print__llseek(const struct syscallname *name, } #endif +#if defined(TARGET_NR_socket) +static void +print_socket(const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + abi_ulong domain = arg0, type = arg1, protocol = arg2; + + print_syscall_prologue(name); + print_socket_domain(domain); + gemu_log(","); + print_socket_type(type); + gemu_log(","); + if (domain == AF_PACKET || + (domain == AF_INET && type == TARGET_SOCK_PACKET)) { + protocol = tswap16(protocol); + } + print_socket_protocol(domain, type, protocol); + print_syscall_epilogue(name); +} + +#endif + +#if defined(TARGET_NR_socketcall) + +#define get_user_ualx(x, gaddr, idx) \ + get_user_ual(x, (gaddr) + (idx) * sizeof(abi_long)) + +static void do_print_socket(const char *name, abi_long arg1) +{ + abi_ulong domain, type, protocol; + + get_user_ualx(domain, arg1, 0); + get_user_ualx(type, arg1, 1); + get_user_ualx(protocol, arg1, 2); + gemu_log("%s(", name); + print_socket_domain(domain); + gemu_log(","); + print_socket_type(type); + gemu_log(","); + if (domain == AF_PACKET || + (domain == AF_INET && type == TARGET_SOCK_PACKET)) { + protocol = tswap16(protocol); + } + print_socket_protocol(domain, type, protocol); + gemu_log(")"); +} + +static void do_print_sockaddr(const char *name, abi_long arg1) +{ + abi_ulong sockfd, addr, addrlen; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(addr, arg1, 1); + get_user_ualx(addrlen, arg1, 2); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_sockaddr(addr, addrlen); + gemu_log(")"); +} + +static void do_print_listen(const char *name, abi_long arg1) +{ + abi_ulong sockfd, backlog; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(backlog, arg1, 1); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_raw_param(TARGET_ABI_FMT_ld, backlog, 1); + gemu_log(")"); +} + +static void do_print_socketpair(const char *name, abi_long arg1) +{ + abi_ulong domain, type, protocol, tab; + + get_user_ualx(domain, arg1, 0); + get_user_ualx(type, arg1, 1); + get_user_ualx(protocol, arg1, 2); + get_user_ualx(tab, arg1, 3); + + gemu_log("%s(", name); + print_socket_domain(domain); + gemu_log(","); + print_socket_type(type); + gemu_log(","); + print_socket_protocol(domain, type, protocol); + gemu_log(","); + print_raw_param(TARGET_ABI_FMT_lx, tab, 1); + gemu_log(")"); +} + +static void do_print_sendrecv(const char *name, abi_long arg1) +{ + abi_ulong sockfd, msg, len, flags; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(msg, arg1, 1); + get_user_ualx(len, arg1, 2); + get_user_ualx(flags, arg1, 3); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_buf(msg, len, 0); + print_raw_param(TARGET_ABI_FMT_ld, len, 0); + print_flags(msg_flags, flags, 1); + gemu_log(")"); +} + +static void do_print_msgaddr(const char *name, abi_long arg1) +{ + abi_ulong sockfd, msg, len, flags, addr, addrlen; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(msg, arg1, 1); + get_user_ualx(len, arg1, 2); + get_user_ualx(flags, arg1, 3); + get_user_ualx(addr, arg1, 4); + get_user_ualx(addrlen, arg1, 5); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_buf(msg, len, 0); + print_raw_param(TARGET_ABI_FMT_ld, len, 0); + print_flags(msg_flags, flags, 0); + print_sockaddr(addr, addrlen); + gemu_log(")"); +} + +static void do_print_shutdown(const char *name, abi_long arg1) +{ + abi_ulong sockfd, how; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(how, arg1, 1); + + gemu_log("shutdown("); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + switch (how) { + case SHUT_RD: + gemu_log("SHUT_RD"); + break; + case SHUT_WR: + gemu_log("SHUT_WR"); + break; + case SHUT_RDWR: + gemu_log("SHUT_RDWR"); + break; + default: + print_raw_param(TARGET_ABI_FMT_ld, how, 1); + break; + } + gemu_log(")"); +} + +static void do_print_msg(const char *name, abi_long arg1) +{ + abi_ulong sockfd, msg, flags; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(msg, arg1, 1); + get_user_ualx(flags, arg1, 2); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + print_pointer(msg, 0); + print_flags(msg_flags, flags, 1); + gemu_log(")"); +} + +static void do_print_sockopt(const char *name, abi_long arg1) +{ + abi_ulong sockfd, level, optname, optval, optlen; + + get_user_ualx(sockfd, arg1, 0); + get_user_ualx(level, arg1, 1); + get_user_ualx(optname, arg1, 2); + get_user_ualx(optval, arg1, 3); + get_user_ualx(optlen, arg1, 4); + + gemu_log("%s(", name); + print_raw_param(TARGET_ABI_FMT_ld, sockfd, 0); + switch (level) { + case SOL_TCP: + gemu_log("SOL_TCP,"); + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + case SOL_IP: + gemu_log("SOL_IP,"); + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + case SOL_RAW: + gemu_log("SOL_RAW,"); + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + case TARGET_SOL_SOCKET: + gemu_log("SOL_SOCKET,"); + switch (optname) { + case TARGET_SO_DEBUG: + gemu_log("SO_DEBUG,"); +print_optint: + print_number(optval, 0); + break; + case TARGET_SO_REUSEADDR: + gemu_log("SO_REUSEADDR,"); + goto print_optint; + case TARGET_SO_TYPE: + gemu_log("SO_TYPE,"); + goto print_optint; + case TARGET_SO_ERROR: + gemu_log("SO_ERROR,"); + goto print_optint; + case TARGET_SO_DONTROUTE: + gemu_log("SO_DONTROUTE,"); + goto print_optint; + case TARGET_SO_BROADCAST: + gemu_log("SO_BROADCAST,"); + goto print_optint; + case TARGET_SO_SNDBUF: + gemu_log("SO_SNDBUF,"); + goto print_optint; + case TARGET_SO_RCVBUF: + gemu_log("SO_RCVBUF,"); + goto print_optint; + case TARGET_SO_KEEPALIVE: + gemu_log("SO_KEEPALIVE,"); + goto print_optint; + case TARGET_SO_OOBINLINE: + gemu_log("SO_OOBINLINE,"); + goto print_optint; + case TARGET_SO_NO_CHECK: + gemu_log("SO_NO_CHECK,"); + goto print_optint; + case TARGET_SO_PRIORITY: + gemu_log("SO_PRIORITY,"); + goto print_optint; + case TARGET_SO_BSDCOMPAT: + gemu_log("SO_BSDCOMPAT,"); + goto print_optint; + case TARGET_SO_PASSCRED: + gemu_log("SO_PASSCRED,"); + goto print_optint; + case TARGET_SO_TIMESTAMP: + gemu_log("SO_TIMESTAMP,"); + goto print_optint; + case TARGET_SO_RCVLOWAT: + gemu_log("SO_RCVLOWAT,"); + goto print_optint; + case TARGET_SO_RCVTIMEO: + gemu_log("SO_RCVTIMEO,"); + print_timeval(optval, 0); + break; + case TARGET_SO_SNDTIMEO: + gemu_log("SO_SNDTIMEO,"); + print_timeval(optval, 0); + break; + case TARGET_SO_ATTACH_FILTER: { + struct target_sock_fprog *fprog; + + gemu_log("SO_ATTACH_FILTER,"); + + if (lock_user_struct(VERIFY_READ, fprog, optval, 0)) { + struct target_sock_filter *filter; + gemu_log("{"); + if (lock_user_struct(VERIFY_READ, filter, + tswapal(fprog->filter), 0)) { + int i; + for (i = 0; i < tswap16(fprog->len) - 1; i++) { + gemu_log("[%d]{0x%x,%d,%d,0x%x},", + i, tswap16(filter[i].code), + filter[i].jt, filter[i].jf, + tswap32(filter[i].k)); + } + gemu_log("[%d]{0x%x,%d,%d,0x%x}", + i, tswap16(filter[i].code), + filter[i].jt, filter[i].jf, + tswap32(filter[i].k)); + } else { + gemu_log(TARGET_ABI_FMT_lx, tswapal(fprog->filter)); + } + gemu_log(",%d},", tswap16(fprog->len)); + unlock_user(fprog, optval, 0); + } else { + print_pointer(optval, 0); + } + break; + } + default: + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + } + break; + default: + print_raw_param(TARGET_ABI_FMT_ld, level, 0); + print_raw_param(TARGET_ABI_FMT_ld, optname, 0); + print_pointer(optval, 0); + break; + } + print_raw_param(TARGET_ABI_FMT_ld, optlen, 1); + gemu_log(")"); +} + +#define PRINT_SOCKOP(name, func) \ + [SOCKOP_##name] = { #name, func } + +static struct { + const char *name; + void (*print)(const char *, abi_long); +} scall[] = { + PRINT_SOCKOP(socket, do_print_socket), + PRINT_SOCKOP(bind, do_print_sockaddr), + PRINT_SOCKOP(connect, do_print_sockaddr), + PRINT_SOCKOP(listen, do_print_listen), + PRINT_SOCKOP(accept, do_print_sockaddr), + PRINT_SOCKOP(getsockname, do_print_sockaddr), + PRINT_SOCKOP(getpeername, do_print_sockaddr), + PRINT_SOCKOP(socketpair, do_print_socketpair), + PRINT_SOCKOP(send, do_print_sendrecv), + PRINT_SOCKOP(recv, do_print_sendrecv), + PRINT_SOCKOP(sendto, do_print_msgaddr), + PRINT_SOCKOP(recvfrom, do_print_msgaddr), + PRINT_SOCKOP(shutdown, do_print_shutdown), + PRINT_SOCKOP(sendmsg, do_print_msg), + PRINT_SOCKOP(recvmsg, do_print_msg), + PRINT_SOCKOP(setsockopt, do_print_sockopt), + PRINT_SOCKOP(getsockopt, do_print_sockopt), +}; + +static void +print_socketcall(const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + if (arg0 >= 0 && arg0 < ARRAY_SIZE(scall) && scall[arg0].print) { + scall[arg0].print(scall[arg0].name, arg1); + return; + } + print_syscall_prologue(name); + print_raw_param(TARGET_ABI_FMT_ld, arg0, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg1, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg2, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg3, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg4, 0); + print_raw_param(TARGET_ABI_FMT_ld, arg5, 0); + print_syscall_epilogue(name); +} +#endif + #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) || \ defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) static void diff --git a/linux-user/strace.list b/linux-user/strace.list index aa0cd735cc..aa967a2475 100644 --- a/linux-user/strace.list +++ b/linux-user/strace.list @@ -337,7 +337,8 @@ { TARGET_NR_getsockopt, "getsockopt" , NULL, NULL, NULL }, #endif #ifdef TARGET_NR_get_thread_area -{ TARGET_NR_get_thread_area, "get_thread_area" , NULL, NULL, NULL }, +{ TARGET_NR_get_thread_area, "get_thread_area", "%s(0x"TARGET_ABI_FMT_lx")", + NULL, NULL }, #endif #ifdef TARGET_NR_gettid { TARGET_NR_gettid, "gettid" , NULL, NULL, NULL }, @@ -1234,7 +1235,8 @@ { TARGET_NR_setsockopt, "setsockopt" , NULL, NULL, NULL }, #endif #ifdef TARGET_NR_set_thread_area -{ TARGET_NR_set_thread_area, "set_thread_area" , NULL, NULL, NULL }, +{ TARGET_NR_set_thread_area, "set_thread_area", "%s(0x"TARGET_ABI_FMT_lx")", + NULL, NULL }, #endif #ifdef TARGET_NR_set_tid_address { TARGET_NR_set_tid_address, "set_tid_address" , NULL, NULL, NULL }, @@ -1291,10 +1293,10 @@ { TARGET_NR_sigsuspend, "sigsuspend" , NULL, NULL, NULL }, #endif #ifdef TARGET_NR_socket -{ TARGET_NR_socket, "socket" , NULL, NULL, NULL }, +{ TARGET_NR_socket, "socket" , NULL, print_socket, NULL }, #endif #ifdef TARGET_NR_socketcall -{ TARGET_NR_socketcall, "socketcall" , NULL, NULL, NULL }, +{ TARGET_NR_socketcall, "socketcall" , NULL, print_socketcall, NULL }, #endif #ifdef TARGET_NR_socketpair { TARGET_NR_socketpair, "socketpair" , NULL, NULL, NULL }, diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 1c17b741c2..d3d7ee600a 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -123,11 +123,6 @@ int __clone2(int (*fn)(void *), void *child_stack_base, #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2]) #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2]) -/* This is the size of the host kernel's sigset_t, needed where we make - * direct system calls that take a sigset_t pointer and a size. - */ -#define SIGSET_T_SIZE (_NSIG / 8) - #undef _syscall0 #undef _syscall1 #undef _syscall2 @@ -783,6 +778,16 @@ safe_syscall5(int, mq_timedreceive, int, mqdes, char *, msg_ptr, * the libc function. */ #define safe_ioctl(...) safe_syscall(__NR_ioctl, __VA_ARGS__) +/* Similarly for fcntl. Note that callers must always: + * pass the F_GETLK64 etc constants rather than the unsuffixed F_GETLK + * use the flock64 struct rather than unsuffixed flock + * This will then work and use a 64-bit offset for both 32-bit and 64-bit hosts. + */ +#ifdef __NR_fcntl64 +#define safe_fcntl(...) safe_syscall(__NR_fcntl64, __VA_ARGS__) +#else +#define safe_fcntl(...) safe_syscall(__NR_fcntl, __VA_ARGS__) +#endif static inline int host_to_target_sock_type(int host_type) { @@ -1687,6 +1692,7 @@ static abi_long target_to_host_for_each_nlmsg(struct nlmsghdr *nlh, struct nlmsgerr *e = NLMSG_DATA(nlh); e->error = tswap32(e->error); tswap_nlmsghdr(&e->msg); + return 0; } default: ret = target_to_host_nlmsg(nlh); @@ -1942,29 +1948,35 @@ static abi_long host_to_target_data_route(struct nlmsghdr *nlh) case RTM_NEWLINK: case RTM_DELLINK: case RTM_GETLINK: - ifi = NLMSG_DATA(nlh); - ifi->ifi_type = tswap16(ifi->ifi_type); - ifi->ifi_index = tswap32(ifi->ifi_index); - ifi->ifi_flags = tswap32(ifi->ifi_flags); - ifi->ifi_change = tswap32(ifi->ifi_change); - host_to_target_link_rtattr(IFLA_RTA(ifi), - nlmsg_len - NLMSG_LENGTH(sizeof(*ifi))); + if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) { + ifi = NLMSG_DATA(nlh); + ifi->ifi_type = tswap16(ifi->ifi_type); + ifi->ifi_index = tswap32(ifi->ifi_index); + ifi->ifi_flags = tswap32(ifi->ifi_flags); + ifi->ifi_change = tswap32(ifi->ifi_change); + host_to_target_link_rtattr(IFLA_RTA(ifi), + nlmsg_len - NLMSG_LENGTH(sizeof(*ifi))); + } break; case RTM_NEWADDR: case RTM_DELADDR: case RTM_GETADDR: - ifa = NLMSG_DATA(nlh); - ifa->ifa_index = tswap32(ifa->ifa_index); - host_to_target_addr_rtattr(IFA_RTA(ifa), - nlmsg_len - NLMSG_LENGTH(sizeof(*ifa))); + if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) { + ifa = NLMSG_DATA(nlh); + ifa->ifa_index = tswap32(ifa->ifa_index); + host_to_target_addr_rtattr(IFA_RTA(ifa), + nlmsg_len - NLMSG_LENGTH(sizeof(*ifa))); + } break; case RTM_NEWROUTE: case RTM_DELROUTE: case RTM_GETROUTE: - rtm = NLMSG_DATA(nlh); - rtm->rtm_flags = tswap32(rtm->rtm_flags); - host_to_target_route_rtattr(RTM_RTA(rtm), - nlmsg_len - NLMSG_LENGTH(sizeof(*rtm))); + if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) { + rtm = NLMSG_DATA(nlh); + rtm->rtm_flags = tswap32(rtm->rtm_flags); + host_to_target_route_rtattr(RTM_RTA(rtm), + nlmsg_len - NLMSG_LENGTH(sizeof(*rtm))); + } break; default: return -TARGET_EINVAL; @@ -2080,30 +2092,36 @@ static abi_long target_to_host_data_route(struct nlmsghdr *nlh) break; case RTM_NEWLINK: case RTM_DELLINK: - ifi = NLMSG_DATA(nlh); - ifi->ifi_type = tswap16(ifi->ifi_type); - ifi->ifi_index = tswap32(ifi->ifi_index); - ifi->ifi_flags = tswap32(ifi->ifi_flags); - ifi->ifi_change = tswap32(ifi->ifi_change); - target_to_host_link_rtattr(IFLA_RTA(ifi), nlh->nlmsg_len - - NLMSG_LENGTH(sizeof(*ifi))); + if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifi))) { + ifi = NLMSG_DATA(nlh); + ifi->ifi_type = tswap16(ifi->ifi_type); + ifi->ifi_index = tswap32(ifi->ifi_index); + ifi->ifi_flags = tswap32(ifi->ifi_flags); + ifi->ifi_change = tswap32(ifi->ifi_change); + target_to_host_link_rtattr(IFLA_RTA(ifi), nlh->nlmsg_len - + NLMSG_LENGTH(sizeof(*ifi))); + } break; case RTM_GETADDR: case RTM_NEWADDR: case RTM_DELADDR: - ifa = NLMSG_DATA(nlh); - ifa->ifa_index = tswap32(ifa->ifa_index); - target_to_host_addr_rtattr(IFA_RTA(ifa), nlh->nlmsg_len - - NLMSG_LENGTH(sizeof(*ifa))); + if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*ifa))) { + ifa = NLMSG_DATA(nlh); + ifa->ifa_index = tswap32(ifa->ifa_index); + target_to_host_addr_rtattr(IFA_RTA(ifa), nlh->nlmsg_len - + NLMSG_LENGTH(sizeof(*ifa))); + } break; case RTM_GETROUTE: break; case RTM_NEWROUTE: case RTM_DELROUTE: - rtm = NLMSG_DATA(nlh); - rtm->rtm_flags = tswap32(rtm->rtm_flags); - target_to_host_route_rtattr(RTM_RTA(rtm), nlh->nlmsg_len - - NLMSG_LENGTH(sizeof(*rtm))); + if (nlh->nlmsg_len >= NLMSG_LENGTH(sizeof(*rtm))) { + rtm = NLMSG_DATA(nlh); + rtm->rtm_flags = tswap32(rtm->rtm_flags); + target_to_host_route_rtattr(RTM_RTA(rtm), nlh->nlmsg_len - + NLMSG_LENGTH(sizeof(*rtm))); + } break; default: return -TARGET_EOPNOTSUPP; @@ -2985,7 +3003,7 @@ static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, len = ret; if (fd_trans_host_to_target_data(fd)) { ret = fd_trans_host_to_target_data(fd)(msg.msg_iov->iov_base, - msg.msg_iov->iov_len); + len); } else { ret = host_to_target_cmsg(msgp, &msg); } @@ -5541,11 +5559,11 @@ static int target_to_host_fcntl_cmd(int cmd) case TARGET_F_SETFL: return cmd; case TARGET_F_GETLK: - return F_GETLK; - case TARGET_F_SETLK: - return F_SETLK; - case TARGET_F_SETLKW: - return F_SETLKW; + return F_GETLK64; + case TARGET_F_SETLK: + return F_SETLK64; + case TARGET_F_SETLKW: + return F_SETLKW64; case TARGET_F_GETOWN: return F_GETOWN; case TARGET_F_SETOWN: @@ -5580,6 +5598,10 @@ static int target_to_host_fcntl_cmd(int cmd) case TARGET_F_SETOWN_EX: return F_SETOWN_EX; #endif + case TARGET_F_SETPIPE_SZ: + return F_SETPIPE_SZ; + case TARGET_F_GETPIPE_SZ: + return F_GETPIPE_SZ; default: return -TARGET_EINVAL; } @@ -5596,12 +5618,134 @@ static const bitmask_transtbl flock_tbl[] = { { 0, 0, 0, 0 } }; -static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) +static inline abi_long copy_from_user_flock(struct flock64 *fl, + abi_ulong target_flock_addr) +{ + struct target_flock *target_fl; + short l_type; + + if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { + return -TARGET_EFAULT; + } + + __get_user(l_type, &target_fl->l_type); + fl->l_type = target_to_host_bitmask(l_type, flock_tbl); + __get_user(fl->l_whence, &target_fl->l_whence); + __get_user(fl->l_start, &target_fl->l_start); + __get_user(fl->l_len, &target_fl->l_len); + __get_user(fl->l_pid, &target_fl->l_pid); + unlock_user_struct(target_fl, target_flock_addr, 0); + return 0; +} + +static inline abi_long copy_to_user_flock(abi_ulong target_flock_addr, + const struct flock64 *fl) { - struct flock fl; struct target_flock *target_fl; + short l_type; + + if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { + return -TARGET_EFAULT; + } + + l_type = host_to_target_bitmask(fl->l_type, flock_tbl); + __put_user(l_type, &target_fl->l_type); + __put_user(fl->l_whence, &target_fl->l_whence); + __put_user(fl->l_start, &target_fl->l_start); + __put_user(fl->l_len, &target_fl->l_len); + __put_user(fl->l_pid, &target_fl->l_pid); + unlock_user_struct(target_fl, target_flock_addr, 1); + return 0; +} + +typedef abi_long from_flock64_fn(struct flock64 *fl, abi_ulong target_addr); +typedef abi_long to_flock64_fn(abi_ulong target_addr, const struct flock64 *fl); + +#if defined(TARGET_ARM) && TARGET_ABI_BITS == 32 +static inline abi_long copy_from_user_eabi_flock64(struct flock64 *fl, + abi_ulong target_flock_addr) +{ + struct target_eabi_flock64 *target_fl; + short l_type; + + if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { + return -TARGET_EFAULT; + } + + __get_user(l_type, &target_fl->l_type); + fl->l_type = target_to_host_bitmask(l_type, flock_tbl); + __get_user(fl->l_whence, &target_fl->l_whence); + __get_user(fl->l_start, &target_fl->l_start); + __get_user(fl->l_len, &target_fl->l_len); + __get_user(fl->l_pid, &target_fl->l_pid); + unlock_user_struct(target_fl, target_flock_addr, 0); + return 0; +} + +static inline abi_long copy_to_user_eabi_flock64(abi_ulong target_flock_addr, + const struct flock64 *fl) +{ + struct target_eabi_flock64 *target_fl; + short l_type; + + if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { + return -TARGET_EFAULT; + } + + l_type = host_to_target_bitmask(fl->l_type, flock_tbl); + __put_user(l_type, &target_fl->l_type); + __put_user(fl->l_whence, &target_fl->l_whence); + __put_user(fl->l_start, &target_fl->l_start); + __put_user(fl->l_len, &target_fl->l_len); + __put_user(fl->l_pid, &target_fl->l_pid); + unlock_user_struct(target_fl, target_flock_addr, 1); + return 0; +} +#endif + +static inline abi_long copy_from_user_flock64(struct flock64 *fl, + abi_ulong target_flock_addr) +{ + struct target_flock64 *target_fl; + short l_type; + + if (!lock_user_struct(VERIFY_READ, target_fl, target_flock_addr, 1)) { + return -TARGET_EFAULT; + } + + __get_user(l_type, &target_fl->l_type); + fl->l_type = target_to_host_bitmask(l_type, flock_tbl); + __get_user(fl->l_whence, &target_fl->l_whence); + __get_user(fl->l_start, &target_fl->l_start); + __get_user(fl->l_len, &target_fl->l_len); + __get_user(fl->l_pid, &target_fl->l_pid); + unlock_user_struct(target_fl, target_flock_addr, 0); + return 0; +} + +static inline abi_long copy_to_user_flock64(abi_ulong target_flock_addr, + const struct flock64 *fl) +{ + struct target_flock64 *target_fl; + short l_type; + + if (!lock_user_struct(VERIFY_WRITE, target_fl, target_flock_addr, 0)) { + return -TARGET_EFAULT; + } + + l_type = host_to_target_bitmask(fl->l_type, flock_tbl); + __put_user(l_type, &target_fl->l_type); + __put_user(fl->l_whence, &target_fl->l_whence); + __put_user(fl->l_start, &target_fl->l_start); + __put_user(fl->l_len, &target_fl->l_len); + __put_user(fl->l_pid, &target_fl->l_pid); + unlock_user_struct(target_fl, target_flock_addr, 1); + return 0; +} + +static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) +{ struct flock64 fl64; - struct target_flock64 *target_fl64; #ifdef F_GETOWN_EX struct f_owner_ex fox; struct target_f_owner_ex *target_fox; @@ -5614,94 +5758,60 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) switch(cmd) { case TARGET_F_GETLK: - if (!lock_user_struct(VERIFY_READ, target_fl, arg, 1)) - return -TARGET_EFAULT; - fl.l_type = - target_to_host_bitmask(tswap16(target_fl->l_type), flock_tbl); - fl.l_whence = tswap16(target_fl->l_whence); - fl.l_start = tswapal(target_fl->l_start); - fl.l_len = tswapal(target_fl->l_len); - fl.l_pid = tswap32(target_fl->l_pid); - unlock_user_struct(target_fl, arg, 0); - ret = get_errno(fcntl(fd, host_cmd, &fl)); + ret = copy_from_user_flock(&fl64, arg); + if (ret) { + return ret; + } + ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); if (ret == 0) { - if (!lock_user_struct(VERIFY_WRITE, target_fl, arg, 0)) - return -TARGET_EFAULT; - target_fl->l_type = - host_to_target_bitmask(tswap16(fl.l_type), flock_tbl); - target_fl->l_whence = tswap16(fl.l_whence); - target_fl->l_start = tswapal(fl.l_start); - target_fl->l_len = tswapal(fl.l_len); - target_fl->l_pid = tswap32(fl.l_pid); - unlock_user_struct(target_fl, arg, 1); + ret = copy_to_user_flock(arg, &fl64); } break; case TARGET_F_SETLK: case TARGET_F_SETLKW: - if (!lock_user_struct(VERIFY_READ, target_fl, arg, 1)) - return -TARGET_EFAULT; - fl.l_type = - target_to_host_bitmask(tswap16(target_fl->l_type), flock_tbl); - fl.l_whence = tswap16(target_fl->l_whence); - fl.l_start = tswapal(target_fl->l_start); - fl.l_len = tswapal(target_fl->l_len); - fl.l_pid = tswap32(target_fl->l_pid); - unlock_user_struct(target_fl, arg, 0); - ret = get_errno(fcntl(fd, host_cmd, &fl)); + ret = copy_from_user_flock(&fl64, arg); + if (ret) { + return ret; + } + ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); break; case TARGET_F_GETLK64: - if (!lock_user_struct(VERIFY_READ, target_fl64, arg, 1)) - return -TARGET_EFAULT; - fl64.l_type = - target_to_host_bitmask(tswap16(target_fl64->l_type), flock_tbl) >> 1; - fl64.l_whence = tswap16(target_fl64->l_whence); - fl64.l_start = tswap64(target_fl64->l_start); - fl64.l_len = tswap64(target_fl64->l_len); - fl64.l_pid = tswap32(target_fl64->l_pid); - unlock_user_struct(target_fl64, arg, 0); - ret = get_errno(fcntl(fd, host_cmd, &fl64)); + ret = copy_from_user_flock64(&fl64, arg); + if (ret) { + return ret; + } + ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); if (ret == 0) { - if (!lock_user_struct(VERIFY_WRITE, target_fl64, arg, 0)) - return -TARGET_EFAULT; - target_fl64->l_type = - host_to_target_bitmask(tswap16(fl64.l_type), flock_tbl) >> 1; - target_fl64->l_whence = tswap16(fl64.l_whence); - target_fl64->l_start = tswap64(fl64.l_start); - target_fl64->l_len = tswap64(fl64.l_len); - target_fl64->l_pid = tswap32(fl64.l_pid); - unlock_user_struct(target_fl64, arg, 1); + ret = copy_to_user_flock64(arg, &fl64); } break; case TARGET_F_SETLK64: case TARGET_F_SETLKW64: - if (!lock_user_struct(VERIFY_READ, target_fl64, arg, 1)) - return -TARGET_EFAULT; - fl64.l_type = - target_to_host_bitmask(tswap16(target_fl64->l_type), flock_tbl) >> 1; - fl64.l_whence = tswap16(target_fl64->l_whence); - fl64.l_start = tswap64(target_fl64->l_start); - fl64.l_len = tswap64(target_fl64->l_len); - fl64.l_pid = tswap32(target_fl64->l_pid); - unlock_user_struct(target_fl64, arg, 0); - ret = get_errno(fcntl(fd, host_cmd, &fl64)); + ret = copy_from_user_flock64(&fl64, arg); + if (ret) { + return ret; + } + ret = get_errno(safe_fcntl(fd, host_cmd, &fl64)); break; case TARGET_F_GETFL: - ret = get_errno(fcntl(fd, host_cmd, arg)); + ret = get_errno(safe_fcntl(fd, host_cmd, arg)); if (ret >= 0) { ret = host_to_target_bitmask(ret, fcntl_flags_tbl); } break; case TARGET_F_SETFL: - ret = get_errno(fcntl(fd, host_cmd, target_to_host_bitmask(arg, fcntl_flags_tbl))); + ret = get_errno(safe_fcntl(fd, host_cmd, + target_to_host_bitmask(arg, + fcntl_flags_tbl))); break; #ifdef F_GETOWN_EX case TARGET_F_GETOWN_EX: - ret = get_errno(fcntl(fd, host_cmd, &fox)); + ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); if (ret >= 0) { if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) return -TARGET_EFAULT; @@ -5719,7 +5829,7 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) fox.type = tswap32(target_fox->type); fox.pid = tswap32(target_fox->pid); unlock_user_struct(target_fox, arg, 0); - ret = get_errno(fcntl(fd, host_cmd, &fox)); + ret = get_errno(safe_fcntl(fd, host_cmd, &fox)); break; #endif @@ -5729,11 +5839,13 @@ static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) case TARGET_F_GETSIG: case TARGET_F_SETLEASE: case TARGET_F_GETLEASE: - ret = get_errno(fcntl(fd, host_cmd, arg)); + case TARGET_F_SETPIPE_SZ: + case TARGET_F_GETPIPE_SZ: + ret = get_errno(safe_fcntl(fd, host_cmd, arg)); break; default: - ret = get_errno(fcntl(fd, cmd, arg)); + ret = get_errno(safe_fcntl(fd, cmd, arg)); break; } return ret; @@ -7783,8 +7895,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, case TARGET_NR_rt_sigqueueinfo: { siginfo_t uinfo; - if (!(p = lock_user(VERIFY_READ, arg3, sizeof(target_sigset_t), 1))) + + p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); + if (!p) { goto efault; + } target_to_host_siginfo(&uinfo, p); unlock_user(p, arg1, 0); ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo)); @@ -10132,9 +10247,14 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { int cmd; struct flock64 fl; - struct target_flock64 *target_fl; + from_flock64_fn *copyfrom = copy_from_user_flock64; + to_flock64_fn *copyto = copy_to_user_flock64; + #ifdef TARGET_ARM - struct target_eabi_flock64 *target_efl; + if (((CPUARMState *)cpu_env)->eabi) { + copyfrom = copy_from_user_eabi_flock64; + copyto = copy_to_user_eabi_flock64; + } #endif cmd = target_to_host_fcntl_cmd(arg2); @@ -10145,80 +10265,23 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, switch(arg2) { case TARGET_F_GETLK64: -#ifdef TARGET_ARM - if (((CPUARMState *)cpu_env)->eabi) { - if (!lock_user_struct(VERIFY_READ, target_efl, arg3, 1)) - goto efault; - fl.l_type = tswap16(target_efl->l_type); - fl.l_whence = tswap16(target_efl->l_whence); - fl.l_start = tswap64(target_efl->l_start); - fl.l_len = tswap64(target_efl->l_len); - fl.l_pid = tswap32(target_efl->l_pid); - unlock_user_struct(target_efl, arg3, 0); - } else -#endif - { - if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) - goto efault; - fl.l_type = tswap16(target_fl->l_type); - fl.l_whence = tswap16(target_fl->l_whence); - fl.l_start = tswap64(target_fl->l_start); - fl.l_len = tswap64(target_fl->l_len); - fl.l_pid = tswap32(target_fl->l_pid); - unlock_user_struct(target_fl, arg3, 0); + ret = copyfrom(&fl, arg3); + if (ret) { + break; } ret = get_errno(fcntl(arg1, cmd, &fl)); - if (ret == 0) { -#ifdef TARGET_ARM - if (((CPUARMState *)cpu_env)->eabi) { - if (!lock_user_struct(VERIFY_WRITE, target_efl, arg3, 0)) - goto efault; - target_efl->l_type = tswap16(fl.l_type); - target_efl->l_whence = tswap16(fl.l_whence); - target_efl->l_start = tswap64(fl.l_start); - target_efl->l_len = tswap64(fl.l_len); - target_efl->l_pid = tswap32(fl.l_pid); - unlock_user_struct(target_efl, arg3, 1); - } else -#endif - { - if (!lock_user_struct(VERIFY_WRITE, target_fl, arg3, 0)) - goto efault; - target_fl->l_type = tswap16(fl.l_type); - target_fl->l_whence = tswap16(fl.l_whence); - target_fl->l_start = tswap64(fl.l_start); - target_fl->l_len = tswap64(fl.l_len); - target_fl->l_pid = tswap32(fl.l_pid); - unlock_user_struct(target_fl, arg3, 1); - } - } + if (ret == 0) { + ret = copyto(arg3, &fl); + } break; case TARGET_F_SETLK64: case TARGET_F_SETLKW64: -#ifdef TARGET_ARM - if (((CPUARMState *)cpu_env)->eabi) { - if (!lock_user_struct(VERIFY_READ, target_efl, arg3, 1)) - goto efault; - fl.l_type = tswap16(target_efl->l_type); - fl.l_whence = tswap16(target_efl->l_whence); - fl.l_start = tswap64(target_efl->l_start); - fl.l_len = tswap64(target_efl->l_len); - fl.l_pid = tswap32(target_efl->l_pid); - unlock_user_struct(target_efl, arg3, 0); - } else -#endif - { - if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) - goto efault; - fl.l_type = tswap16(target_fl->l_type); - fl.l_whence = tswap16(target_fl->l_whence); - fl.l_start = tswap64(target_fl->l_start); - fl.l_len = tswap64(target_fl->l_len); - fl.l_pid = tswap32(target_fl->l_pid); - unlock_user_struct(target_fl, arg3, 0); + ret = copyfrom(&fl, arg3); + if (ret) { + break; } - ret = get_errno(fcntl(arg1, cmd, &fl)); + ret = get_errno(safe_fcntl(arg1, cmd, &fl)); break; default: ret = do_fcntl(arg1, arg2, arg3); diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 6ee9251c50..dce1bcc91d 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -135,6 +135,24 @@ struct target_sockaddr_ll { uint8_t sll_addr[8]; /* Physical layer address */ }; +struct target_sockaddr_un { + uint16_t su_family; + uint8_t sun_path[108]; +}; + +struct target_in_addr { + uint32_t s_addr; /* big endian */ +}; + +struct target_sockaddr_in { + uint16_t sin_family; + int16_t sin_port; /* big endian */ + struct target_in_addr sin_addr; + uint8_t __pad[sizeof(struct target_sockaddr) - + sizeof(uint16_t) - sizeof(int16_t) - + sizeof(struct target_in_addr)]; +}; + struct target_sock_filter { abi_ushort code; uint8_t jt; @@ -147,10 +165,6 @@ struct target_sock_fprog { abi_ulong filter; }; -struct target_in_addr { - uint32_t s_addr; /* big endian */ -}; - struct target_ip_mreq { struct target_in_addr imr_multiaddr; struct target_in_addr imr_address; @@ -2166,6 +2180,8 @@ struct target_statfs64 { #define TARGET_F_SETLEASE (TARGET_F_LINUX_SPECIFIC_BASE + 0) #define TARGET_F_GETLEASE (TARGET_F_LINUX_SPECIFIC_BASE + 1) #define TARGET_F_DUPFD_CLOEXEC (TARGET_F_LINUX_SPECIFIC_BASE + 6) +#define TARGET_F_SETPIPE_SZ (TARGET_F_LINUX_SPECIFIC_BASE + 7) +#define TARGET_F_GETPIPE_SZ (TARGET_F_LINUX_SPECIFIC_BASE + 8) #define TARGET_F_NOTIFY (TARGET_F_LINUX_SPECIFIC_BASE+2) #if defined(TARGET_ALPHA) diff --git a/user-exec.c b/user-exec.c index 50e95a68de..95f9f97c5c 100644 --- a/user-exec.c +++ b/user-exec.c @@ -117,14 +117,7 @@ static inline int handle_cpu_signal(uintptr_t pc, unsigned long address, #if defined(__i386__) -#if defined(__APPLE__) -#include <sys/ucontext.h> - -#define EIP_sig(context) (*((unsigned long *)&(context)->uc_mcontext->ss.eip)) -#define TRAP_sig(context) ((context)->uc_mcontext->es.trapno) -#define ERROR_sig(context) ((context)->uc_mcontext->es.err) -#define MASK_sig(context) ((context)->uc_sigmask) -#elif defined(__NetBSD__) +#if defined(__NetBSD__) #include <ucontext.h> #define EIP_sig(context) ((context)->uc_mcontext.__gregs[_REG_EIP]) @@ -274,44 +267,6 @@ int cpu_signal_handler(int host_signum, void *pinfo, #define TRAP_sig(context) ((context)->uc_mcontext.mc_exc) #endif /* __FreeBSD__|| __FreeBSD_kernel__ */ -#ifdef __APPLE__ -#include <sys/ucontext.h> -typedef struct ucontext SIGCONTEXT; -/* All Registers access - only for local access */ -#define REG_sig(reg_name, context) \ - ((context)->uc_mcontext->ss.reg_name) -#define FLOATREG_sig(reg_name, context) \ - ((context)->uc_mcontext->fs.reg_name) -#define EXCEPREG_sig(reg_name, context) \ - ((context)->uc_mcontext->es.reg_name) -#define VECREG_sig(reg_name, context) \ - ((context)->uc_mcontext->vs.reg_name) -/* Gpr Registers access */ -#define GPR_sig(reg_num, context) REG_sig(r##reg_num, context) -/* Program counter */ -#define IAR_sig(context) REG_sig(srr0, context) -/* Machine State Register (Supervisor) */ -#define MSR_sig(context) REG_sig(srr1, context) -#define CTR_sig(context) REG_sig(ctr, context) -/* Link register */ -#define XER_sig(context) REG_sig(xer, context) -/* User's integer exception register */ -#define LR_sig(context) REG_sig(lr, context) -/* Condition register */ -#define CR_sig(context) REG_sig(cr, context) -/* Float Registers access */ -#define FLOAT_sig(reg_num, context) \ - FLOATREG_sig(fpregs[reg_num], context) -#define FPSCR_sig(context) \ - ((double)FLOATREG_sig(fpscr, context)) -/* Exception Registers access */ -/* Fault registers for coredump */ -#define DAR_sig(context) EXCEPREG_sig(dar, context) -#define DSISR_sig(context) EXCEPREG_sig(dsisr, context) -/* number of powerpc exception taken */ -#define TRAP_sig(context) EXCEPREG_sig(exception, context) -#endif /* __APPLE__ */ - int cpu_signal_handler(int host_signum, void *pinfo, void *puc) { @@ -494,24 +449,6 @@ int cpu_signal_handler(int host_signum, void *pinfo, void *puc) is_write, &uc->uc_sigmask); } -#elif defined(__mc68000) - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; - struct ucontext *uc = puc; - unsigned long pc; - int is_write; - - pc = uc->uc_mcontext.gregs[16]; - /* XXX: compute is_write */ - is_write = 0; - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, - &uc->uc_sigmask); -} - #elif defined(__ia64) #ifndef __ISR_VALID @@ -616,48 +553,6 @@ int cpu_signal_handler(int host_signum, void *pinfo, is_write, &uc->uc_sigmask); } -#elif defined(__hppa__) - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; - struct ucontext *uc = puc; - unsigned long pc = uc->uc_mcontext.sc_iaoq[0]; - uint32_t insn = *(uint32_t *)pc; - int is_write = 0; - - /* XXX: need kernel patch to get write flag faster. */ - switch (insn >> 26) { - case 0x1a: /* STW */ - case 0x19: /* STH */ - case 0x18: /* STB */ - case 0x1b: /* STWM */ - is_write = 1; - break; - - case 0x09: /* CSTWX, FSTWX, FSTWS */ - case 0x0b: /* CSTDX, FSTDX, FSTDS */ - /* Distinguish from coprocessor load ... */ - is_write = (insn >> 9) & 1; - break; - - case 0x03: - switch ((insn >> 6) & 15) { - case 0xa: /* STWS */ - case 0x9: /* STHS */ - case 0x8: /* STBS */ - case 0xe: /* STWAS */ - case 0xc: /* STBYS */ - is_write = 1; - } - break; - } - - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, &uc->uc_sigmask); -} - #else #error host CPU specific signal handler needed |