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Starting with commit
v2.6.29-6609-g11d06b2a1e5658f448a308aa3beb97bacd64a940, personality
syscall never fails to set the personality, but before commit
v2.6.35-rc1-372-g485d527 it still could return an error.
Starting with that commit, personality syscall never returns an error.
* linux/*/syscallent.h: Set SYSCALL_NEVER_FAILS flag in personality
syscall entries.
As tests-m*32/Makefile.am files now refer to proper arch specific
directories, it's possible to relocate x32 <asm/stat.h> replacement
to its arch specific directory.
* linux/x86_64/asm_stat.h: Move ...
* linux/x32/asm_stat.h: ... here, remove x32 guard.
* Makefile.am (strace_SOURCES): Remove linux/x86_64/asm_stat.h.
Some old kernel headers, Ubuntu 14.04 in particular, provide
<asm/stat.h> editions that are completely wrong for x32.
Workaround this issue by providing a replacement.
* linux/x86_64/asm_stat.h: New file.
* linux/x32/asm_stat.h: Likewise.
* Makefile.am (strace_SOURCES): Add them.
Apparently, there are only two types of instruction pointer printers
depending on the architecture: those that print a register that was
fetched earlier, and those that fetch a register themselves using upeek.
With this change, architectures of the first type have ARCH_PC_REG
defined in their arch_regs.c file, architectures of the first type
have ARCH_PC_PEEK_ADDR defined there, and the common code in syscall.c
uses these macros to print the instruction pointer.
* Makefile.am (EXTRA_DIST): Remove linux/*/print_pc.c.
* linux/*/print_pc.c: Remove.
* linux/aarch64/arch_regs.c(ARCH_PC_REG): Define macro.
* linux/arc/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/arm/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/avr32/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/i386/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/ia64/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/metag/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/mips/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/nios2/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/or1k/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/powerpc64/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/powerpc/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/s390/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/s390x/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/sparc64/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/sparc/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/tile/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/x32/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/x86_64/arch_regs.c(ARCH_PC_REG): Likewise.
* linux/alpha/arch_regs.c(ARCH_PC_PEEK_ADDR): Define macro.
* linux/bfin/arch_regs.c(ARCH_PC_PEEK_ADDR): Likewise.
* linux/crisv10/arch_regs.c(ARCH_PC_PEEK_ADDR): Likewise.
* linux/crisv32/arch_regs.c(ARCH_PC_PEEK_ADDR): Likewise.
* linux/hppa/arch_regs.c(ARCH_PC_PEEK_ADDR): Likewise.
* linux/m68k/arch_regs.c(ARCH_PC_PEEK_ADDR): Likewise.
* linux/microblaze/arch_regs.c(ARCH_PC_PEEK_ADDR): Likewise.
* linux/sh64/arch_regs.c(ARCH_PC_PEEK_ADDR): Likewise.
* linux/sh/arch_regs.c(ARCH_PC_PEEK_ADDR): Likewise.
* linux/xtensa/arch_regs.c(ARCH_PC_PEEK_ADDR): Likewise.
* syscall.c (print_pc): Stop including "print_pc.c".
Use ARCH_PC_REG or ARCH_PC_PEEK_ADDR.
Make arch_sigreturn.c files more self-sustained. While they are
still being included by sigreturn.c, the latter no longer defines
arch_sigreturn function.
* linux/alpha/arch_sigreturn.c (arch_sigreturn): Define.
* linux/arm/arch_sigreturn.c: Likewise.
* linux/crisv10/arch_sigreturn.c: Likewise.
* linux/i386/arch_sigreturn.c: Likewise.
* linux/ia64/arch_sigreturn.c: Likewise.
* linux/m68k/arch_sigreturn.c: Likewise.
* linux/microblaze/arch_sigreturn.c: Likewise.
* linux/mips/arch_sigreturn.c: Likewise.
* linux/powerpc/arch_sigreturn.c: Likewise.
* linux/s390/arch_sigreturn.c: Likewise.
* linux/sparc/arch_sigreturn.c: Likewise.
* linux/tile/arch_sigreturn.c: Likewise.
* linux/x32/arch_sigreturn.c: Remove code.
Include "x86_64/arch_sigreturn.c".
* linux/x86_64/arch_sigreturn.c: Stop including "x32/arch_sigreturn.c".
Include "i386/arch_sigreturn.c" with arch_sigreturn temporarily defined
to i386_arch_sigreturn.
(arch_sigreturn): Define. Add x32 personality support there.
* sigreturn.c: Remove arch_sigreturn header and footer.
Requested-by: Denys Vlasenko <dvlasenk@redhat.com>
* syscall.c (SEN): New temporary macro.
* linux/dummy.h (sys_printargs): New macro.
* linux/subcall.h: Wrap all sys_func entries using SEN.
* linux/*/syscallent*.h: Likewise.
Split code that use arch-specific registers to separate arch files.
* sigreturn.c (sys_sigreturn): Move arch-specific code
to linux/*/arch_sigreturn.c, include "arch_sigreturn.c".
* linux/arch_sigreturn.c: New file.
* Makefile.am (EXTRA_DIST): Add linux/arch_sigreturn.c
and linux/*/arch_sigreturn.c files.
Split code that use arch-specific registers to separate arch files.
* syscall.c: Move definitions of variables containing fetched registers
to linux/*/arch_regs.c files.
[HAVE_GETRVAL2] (getrval2): Move arch-specific code
to linux/*/arch_getrval2.c, include "arch_getrval2.c".
(print_pc): Move arch-specific code to linux/*/print_pc.c files,
include "print_pc.c".
[X86_64] (x86_64_getregs_old): Rename to getregs_old, move to
linux/x86_64/getregs_old.c, include "getregs_old.c".
[POWERPC] (powerpc_getregs_old): Rename to getregs_old, move to
linux/powerpc/getregs_old.c, include "getregs_old.c".
(get_regs) [X86_64, POWERPC]: Update callers.
(get_scno): Move arch-specific code to linux/*/get_scno.c,
include "get_scno.c".
(get_syscall_args): Move arch-specific code
to linux/*/get_syscall_args.c, include "get_syscall_args.c".
(get_error): Move arch-specific code to linux/*/get_error.c,
include "get_error.c".
(get_syscall_result): Move arch-specific code
to linux/*/get_syscall_result.c, include "get_syscall_result.c".
* Makefile.am (EXTRA_DIST): Add new linux/*/*.c files.
As ioctls_inc.h generated natively on x32 differs both from 32/ioctls_inc.h
(by 45 entries) and from linux/64/ioctls_inc.h (by 322 entries), use x32
specific ioctl entries on x32 personality.
* linux/x32/ioctls_inc0.h: Generate from linux v3.19 using ioctls_gen.sh.
* linux/x86_64/ioctlent2.h: Remove.
* linux/x86_64/ioctls_arch2.h: New file.
* linux/x86_64/ioctls_inc2.h: New file.
* Makefile.am (EXTRA_DIST): Remove linux/x86_64/ioctlent2.h, add
linux/x86_64/ioctls_arch2.h and linux/x86_64/ioctls_inc2.h.
Historically, only 16 bits (8-bit number and 8-bit type) of 32-bit ioctl
commands were used for decoding, which was the source for numerous
annoying collisions like this:
ioctl(0, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(0, MGSL_IOCGPARAMS or MMTIMER_GETRES or MTIOCTOP or SNDCTL_MIDI_MPUMODE, 0x7fffd47f7338) = -1 ENOTTY (Inappropriate ioctl for device)
The solution is to use all 32 bits for decoding, not just "number" and
"type", but also "size" and "direction".
As some architectures override defaults that come from asm-generic/ and
provide alternative definitions for some ioctl commands, we support
per-architecture ioctl definitions and merge them with common
definitions at build time. During the merge, we used to keep both
generic and architecture-specific definitions, now architecture-specific
definitions have precedence over generic ones -- ioctlsort omits
definitions from asm-generic/ for those ioctl names that have different
definitions in asm/.
Additional bits of "direction" are architecture specific -- the number
of bits and their values differ between architectures. To reduce
architecture differences in the source code, we keep "direction" in
symbolic form and compile it in ioctlsort.
Additional bits of "size" are also architecture specific -- not only the
number of bits differ between architectures, but sizes of many types
depend on sizeof(long). To reduce architecture differences in the
source code, we keep 32-bit and 64-bit versions of common ioctl
definitions, and use the appropriate version for each architecture and
personality.
To implement this, the tools for generating ioctl definitions from
kernel headers have been rewritten, and the source format of ioctl
definitions has been extended. The final ioctlent*.h files that are
included by syscall.c are now generated from source ioctls_inc*.h and
ioctls_arch*.h files at build time with ioctlsort.
* ioctl.c (ioctl_lookup): Use all 32 bits of ioctl command code.
* ioctlsort.c: Rewritten.
* linux/32/ioctls_inc.h: New file.
* linux/64/ioctls_inc.h: New file.
* linux/aarch64/ioctls_arch0.h: New file.
* linux/aarch64/ioctls_arch1.h: New file.
* linux/aarch64/ioctls_inc0.h: New file.
* linux/aarch64/ioctls_inc1.h: New file.
* linux/alpha/ioctls_arch0.h: New file.
* linux/alpha/ioctls_inc0.h: New file.
* linux/arc/ioctls_arch0.h: New file.
* linux/arc/ioctls_inc0.h: New file.
* linux/arm/ioctls_arch0.h: New file.
* linux/arm/ioctls_inc0.h: New file.
* linux/avr32/ioctls_arch0.h: New file.
* linux/avr32/ioctls_inc0.h: New file.
* linux/bfin/ioctls_arch0.h: New file.
* linux/bfin/ioctls_inc0.h: New file.
* linux/hppa/ioctls_arch0.h: New file.
* linux/hppa/ioctls_inc0.h: New file.
* linux/i386/ioctls_arch0.h: New file.
* linux/i386/ioctls_inc0.h: New file.
* linux/ia64/ioctls_arch0.h: New file.
* linux/ia64/ioctls_inc0.h: New file.
* linux/m68k/ioctls_arch0.h: New file.
* linux/m68k/ioctls_inc0.h: New file.
* linux/metag/ioctls_arch0.h: New file.
* linux/metag/ioctls_inc0.h: New file.
* linux/microblaze/ioctls_arch0.h: New file.
* linux/microblaze/ioctls_inc0.h: New file.
* linux/mips/ioctls_arch0.h: New file.
* linux/mips/ioctls_inc0.h: New file.
* linux/or1k/ioctls_arch0.h: New file.
* linux/or1k/ioctls_inc0.h: New file.
* linux/powerpc/ioctls_arch0.h: New file.
* linux/powerpc/ioctls_inc0.h: New file.
* linux/powerpc64/ioctls_arch0.h: New file.
* linux/powerpc64/ioctls_arch1.h: New file.
* linux/powerpc64/ioctls_inc0.h: New file.
* linux/powerpc64/ioctls_inc1.h: New file.
* linux/s390/ioctls_arch0.h: New file.
* linux/s390/ioctls_inc0.h: New file.
* linux/s390x/ioctls_arch0.h: New file.
* linux/s390x/ioctls_inc0.h: New file.
* linux/sh/ioctls_arch0.h: New file.
* linux/sh/ioctls_inc0.h: New file.
* linux/sh64/ioctls_arch0.h: New file.
* linux/sh64/ioctls_inc0.h: New file.
* linux/sparc/ioctls_arch0.h: New file.
* linux/sparc/ioctls_inc0.h: New file.
* linux/sparc64/ioctls_arch0.h: New file.
* linux/sparc64/ioctls_arch2.h: New file.
* linux/sparc64/ioctls_inc0.h: New file.
* linux/sparc64/ioctls_inc2.h: New file.
* linux/tile/ioctls_arch0.h: New file.
* linux/tile/ioctls_arch1.h: New file.
* linux/tile/ioctls_inc0.h: New file.
* linux/tile/ioctls_inc1.h: New file.
* linux/x32/ioctls_arch0.h: New file.
* linux/x32/ioctls_arch1.h: New file.
* linux/x32/ioctls_inc0.h: New file.
* linux/x32/ioctls_inc1.h: New file.
* linux/x86_64/ioctls_arch0.h: New file.
* linux/x86_64/ioctls_arch1.h: New file.
* linux/x86_64/ioctls_inc0.h: New file.
* linux/x86_64/ioctls_inc1.h: New file.
* linux/xtensa/ioctls_arch0.h: New file.
* linux/xtensa/ioctls_inc0.h: New file.
* linux/aarch64/ioctlent.h.in: Remove.
* linux/aarch64/ioctlent1.h: Remove.
* linux/alpha/ioctlent.h.in: Remove.
* linux/arc/ioctlent.h.in: Remove.
* linux/arm/ioctlent.h.in: Remove.
* linux/avr32/ioctlent.h.in: Remove.
* linux/bfin/ioctlent.h.in: Remove.
* linux/hppa/ioctlent.h.in: Remove.
* linux/i386/ioctlent.h.in: Remove.
* linux/ia64/ioctlent.h.in: Remove.
* linux/ioctlent.h.in: Remove.
* linux/ioctlent.sh: Remove.
* linux/m68k/ioctlent.h.in: Remove.
* linux/metag/ioctlent.h.in: Remove.
* linux/microblaze/ioctlent.h.in: Remove.
* linux/mips/ioctlent.h.in: Remove.
* linux/mips/ioctlent.sh: Remove.
* linux/or1k/ioctlent.h.in: Remove.
* linux/powerpc/ioctlent.h.in: Remove.
* linux/powerpc64/ioctlent.h: Remove.
* linux/powerpc64/ioctlent1.h: Remove.
* linux/s390/ioctlent.h.in: Remove.
* linux/s390x/ioctlent.h.in: Remove.
* linux/sh/ioctlent.h.in: Remove.
* linux/sh64/ioctlent.h.in: Remove.
* linux/sparc/ioctlent.h.in: Remove.
* linux/sparc64/ioctlent.h.in: Remove.
* linux/sparc64/ioctlent2.h: Remove.
* linux/tile/ioctlent.h.in: Remove.
* linux/tile/ioctlent1.h: Remove.
* linux/x32/ioctlent.h.in: Remove.
* linux/x32/ioctlent1.h: Remove.
* linux/x86_64/ioctlent.h.in: Remove.
* linux/x86_64/ioctlent1.h: Remove.
* linux/xtensa/ioctlent.h.in: Remove.
* linux/x86_64/ioctlent2.h: Include ioctlent0.h instead of ioctlent.h.
* syscall.c (struct_ioctlent ioctlent0): Likewise.
* Makefile.am: Remove all ioctlent-related definitions.
Define the list of ioctlent*.h files that have to be generated by
presence of $(srcdir)/$(OS)/$(ARCH)/ioctls_inc*.h files.
Add rules for ioctlent*.h files generation.
(EXTRA_DIST): Update.
* maint/ioctls_gen.sh: New file.
* maint/ioctls_hex.sh: New file.
* maint/ioctls_sym.sh: New file.
* maint/print_ioctlent.c: New file.
* HACKING-scripts: Update for ioctlent.sh -> ioctls_gen.sh migration.
* .gitignore: Add ioctlent[012].h and ioctls_all[012].h.
* configure.ac (AC_CHECK_HEADERS): Add linux/hiddev.h
and linux/mmtimer.h for tests.
* tests/ioctl.c: New file.
* tests/ioctl.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add ioctl.
(TESTS): Add ioctl.test.
* tests/.gitignore: Add ioctl.
Starting in 3.16, these two syscalls have gotten their own entry
point for x32. See linux 7fd44dacdd803c0bbf38bf478d51d280902bb0f1.
* linux/x32/syscallent.h: Change existing io_{setup,submit} to 64bit,
and add new entry points for x32 specifically.
Add SE flag to execve, exit, and exit_group syscall entries.
Add SI flag to brk, execve, mmap, mprotect, mremap, munmap,
remap_file_pages, shmat, and shmdt syscall entries.
The number of pread and pwrite arguments depends on architecture and
personality. For 64bit and ilp32 it equals to 4, for unaligned
32bit it equals to 5, and for aligned 32bit it equals to 6.
* linux/aarch64/syscallent1.h: Change the number of pread and pwrite
arguments to 4.
* linux/alpha/syscallent.h: Likewise.
* linux/mips/syscallent-n32.h: Likewise.
* linux/mips/syscallent-n64.h: Likewise.
* linux/s390x/syscallent.h: Likewise.
* linux/sh64/syscallent.h: Likewise.
* linux/tile/syscallent.h: Likewise.
* linux/x32/syscallent.h: Likewise.
* linux/x86_64/syscallent.h: Likewise.
* linux/or1k/syscallent.h: Change the number of pread and pwrite
arguments to 5.
The number of preadv and pwritev arguments depends on architecture and
personality. For 64bit and ilp32 it equals to 4, for unaligned 32bit
it equals to 5, and for aligned 32bit it equals to 6.
* linux/aarch64/syscallent1.h: Change the number of preadv and pwritev
arguments to 4.
* linux/alpha/syscallent.h: Likewise.
* linux/ia64/syscallent.h: Likewise.
* linux/mips/syscallent-n32.h: Likewise.
* linux/mips/syscallent-n64.h: Likewise.
* linux/s390x/syscallent.h: Likewise.
* linux/sh64/syscallent.h: Likewise.
* linux/tile/syscallent.h: Likewise.
* linux/x32/syscallent.h: Likewise.
* linux/x86_64/syscallent.h: Likewise.
* linux/powerpc/syscallent.h: Change the number of preadv and pwritev
arguments to 6.
* linux/sh/syscallent.h: Likewise.
* linux/xtensa/syscallent.h: Likewise.
The number of fallocate arguments depends on architecture and
personality. For 64bit and ilp32 it equals to 4,
for 32bit it equals to 6.
* linux/aarch64/syscallent1.h: Change the number of fallocate arguments
to 4.
* linux/alpha/syscallent.h: Likewise.
* linux/mips/syscallent-n32.h: Likewise.
* linux/mips/syscallent-n64.h: Likewise.
* linux/s390x/syscallent.h: Likewise.
* linux/sh64/syscallent.h: Likewise.
* linux/tile/syscallent.h: Likewise.
* linux/x32/syscallent.h: Likewise.
* linux/x86_64/syscallent.h: Likewise.
* linux/microblaze/syscallent.h: Set fallocate handler and flags.
The number of readahead arguments depends on architecture and
personality. For 64bit and ilp32 it equals to 3, for unaligned 32bit it
equals to 4, and for aligned 32bit it equals to 5.
* linux/aarch64/syscallent1.h: Set number of readahead arguments to 3.
* linux/alpha/syscallent.h: Likewise.
* linux/ia64/syscallent.h: Likewise.
* linux/s390x/syscallent.h: Likewise.
* linux/sh64/syscallent.h: Likewise.
* linux/x32/syscallent.h: Likewise.
* linux/x86_64/syscallent.h: Likewise.
* linux/or1k/syscallent.h: Set number of readahead arguments to 4.
* linux/sh/syscallent.h: Likewise.
* linux/tile/syscallent.h: Likewise.
* linux/xtensa/syscallent.h: Set number of readahead arguments to 5.
* desc.c (printflock) [X32]: Add special handling required for
this architecture with sizeof(long) < sizeof(off_t).
* file.c [X32] (struct stat64): Add __attribute__((packed)).
[X32] (HAVE_STAT64): Define.
(printstat) [X32]: Redirect to printstat64.
(printstat64) [X32]: Use "struct stat" instead of "struct stat64".
[X32] (realprintstat64): Rename to printstat64_x32.
(sys_stat64, sys_fstat64) [X32]: Remove second definitions of these
functions. Call printstat64_x32 instead of printstat64
* linux/x32/syscallent.h: Fix handlers for truncate and ftruncate.
The file linux/ioctlent.h is generated in the build directory, so
"../ioctlent.h" won't find it.
* linux/aarch64/ioctlent1.h: Remove "../" from include file name.
* linux/powerpc/ioctlent1.h: Likewise.
* linux/tile/ioctlent1.h: Likewise.
* linux/x32/ioctlent1.h: Likewise.
* linux/x86_64/ioctlent1.h: Likewise.
* linux/x86_64/ioctlent2.h: Likewise.
Signed-off-by: Andreas Schwab <schwab@suse.de>
sendfile parser used to decode off_t* parameter as a pointer to host
off_t type. With this change, it is decoded as a pointer to target long
type.
* io.c (print_off_t): New function.
(sys_sendfile): Use it.
* linux/aarch64/syscallent1.h: Use sys_sendfile64 for sendfile decoding.
* linux/tile/syscallent.h: Likewise.
* linux/x32/syscallent.h: Likewise.
* linux/x86_64/syscallent.h: Likewise.
* linux/hppa/syscallent.h: Use sys_sendfile64 for sendfile64 decoding.
* linux/metag/syscallent.h: Correct sendfile syscall name.
* linux/or1k/syscallent.h: Likewise.
or1k was missing TM on many memory-related syscalls
sys_lookup_dcookie is 3-arg on 64-bit arches, and isn't TF
sys_recvmsg is 3-arg on all arches
sys_nfsservctl is 3-arg on all arches
sys_timerfd_create is 2-arg on all arches
sys_[f]truncate64 is 4-arg or 3-arg, never 5-arg
truncate64 is TF
sys_[l]lseek is TD
fstat[64] is TD
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
While at it, fix some comments which say
"we use i386 syscalls/ioctls/errnos" but in reality
common ones are used.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
