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Conditions such as defined(LINUX) are always true now,
defined(FREEBSD) etc are always false.
When if directive has them as subexpressions, it can be simplified.
Another trivial changes here are fixes for directive indentation.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This change is generated by running every source through the following command:
unifdef -DLINUX -Dlinux -USUNOS4 -USVR4 -UUNIXWARE -UFREEBSD
-USUNOS4_KERNEL_ARCH_KLUDGE -UHAVE_MP_PROCFS
-UHAVE_POLLABLE_PROCFS -UHAVE_PR_SYSCALL -UUSE_PROCFS file.c
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* mem.c (sys_mmap64): Fix a bug where we used tcp->u_args[i]
instead of argument values copied from memory.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
* mem.c (sys_old_mmap): For Ia64 and 32-bit personality of x86-64,
copy narrow parameters from userspace by single umove, not by six
separate ones; then assign them to long u_arg[i]. For SH[64],
avoid copying of tcp->u_arg.
(sys_mmap): Add FIXME comment - SH64 and i386 seem to be handled
differently for no apparent reason.
* test/mmap_offset_decode.c: New test program, illustrates FIXME.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
After careful analysis, it looks like !LINUX and ALPHA
pass all seven parameters in registers; and in all other cases
parameters are on stack (pointed to by tcp->u_arg[0]).
In light of this, reorganize ifdefs, making them simpler,
without changing any logic.
After this, it's apparent we use tcp->u_arg[4,5,6] and possibly
[7] without checking that it's valid to do so.
So far, just add a comment about this.
* mem.c (sys_mmap64): Rewrite ifdefs in a much simpler way.
Add comments about apparent bugs.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
* mem.c: Indent includes to show nesting better.
(addtileflags): Fix style of this function definition;
correct wrong endif comment, add another endif comment.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
* mem.c (madvise_flags): Typo fixes. Rename to madvise_cmds.
(sys_madvise): Use printxval, not printflags.
Reported by Rajeev V. Pillai <rajeevvp@gmail.com>.
Make several global variables static.
#ifdef definitions of rarely unused functions.
* defs.h (rflag, tflag, outfname): Remove.
* strace.c (iflag, interactive, pflag_seen, rflag, tflag,
outfname, username): Make static.
* desc.c (sys_getdtablesize): Define only for
ALPHA || FREEBSD || SUNOS4.
* file.c (sys_fchroot): Define only for SUNOS4 || SVR4.
(sys_mkfifo): Define only for FREEBSD.
* mem.c (sys_sbrk): Define only for FREEBSD || SUNOS4.
(sys_getpagesize): Define only for
ALPHA || FREEBSD || IA64 || SUNOS4 || SVR4.
* net.c (sys_so_socket): Define only for SVR4.
* process.c (sys_gethostid): Define only for
FREEBSD || SUNOS4 || SVR4.
(sys_gethostname): Define only for
ALPHA || FREEBSD || SUNOS4 || SVR4.
(sys_setpgrp): Define only for ALPHA || SUNOS4 || SVR4.
(sys_execv): Define only for SPARC || SPARC64 || SUNOS4.
* signal.c (sys_sigblock): Define only for FREEBSD || SUNOS4.
(sys_sighold, sys_sigwait): Define only for SVR4.
(sys_killpg): Define only for FREEBSD || SUNOS4.
* stream.c (sys_getmsg): Define only for
SPARC || SPARC64 || SUNOS4 || SVR4.
* syscall.c (sys_indir): Define only for SUNOS4.
Deal with memory management issues.
* defs.h (tprint_iov): Update prototype.
* desc.c (sys_epoll_wait) [HAVE_SYS_EPOLL_H]: Do not allocate
epoll_event array of arbitrary size on the stack, to avoid
stack overflow.
* file.c (print_xattr_val): Check for integer overflow during
malloc size calculation, to avoid heap corruption.
* io.c (tprint_iov) [HAVE_SYS_UIO_H]: Check for integer overflow
during malloc size calculation, to avoid heap corruption.
Change iovec array handling to avoid heap memory allocation.
* mem.c (get_nodes) [LINUX]: Check for integer overflow during
size calculation and do not allocate array of arbitrary size on
the stack, to avoid stack overflow.
* net.c (printcmsghdr) [HAVE_SENDMSG]: Do not allocate array of
arbitrary size on the stack, to avoid stack overflow. Do not
trust cmsg.cmsg_len to avoid read beyond the end of allocated
object.
(printmsghdr) [HAVE_SENDMSG]: Update tprint_iov() usage.
* process.c (sys_setgroups): Check for integer overflow during
malloc size calculation, to avoid heap corruption. Change gid_t
array handling to avoid heap memory allocation.
(sys_getgroups): Likewise.
(sys_setgroups32) [LINUX]: Likewise.
(sys_getgroups32) [LINUX]: Likewise.
* stream.c (sys_poll) [HAVE_SYS_POLL_H]: Check for integer
overflow during malloc size calculation, to avoid heap corruption.
Change pollfd array handling to avoid heap memory allocation.
* system.c (sys_sysctl) [LINUX]: Check for integer overflow
during malloc size calculation, to avoid heap corruption.
* util.c (dumpiov) [HAVE_SYS_UIO_H]: Check for integer overflow
during malloc size calculation, to avoid heap corruption.
Fixes RH#159196.
* configure.ac: Check for `struct user_desc' in <asm/ldt.h>.
* process.c [HAVE_STRUCT_USER_DESC]: Use struct user_desc in place of
struct modify_ldt_ldt_s.
* mem.c [HAVE_STRUCT_USER_DESC]: Likewise.
Various fixes for SuperH [SH]:
* mem.c (sys_old_mmap): mmap() parameters passed in registers
* net.c (sys_pipe), syscall.c (getrval2): pipe() results returned
in registers
* process.c (change_syscall): Fixed register which holds system
call number
* util.c (arg0_offset, arg1_offset): provide definition
* Makefile.am: Added new files in linux/sh
* linux/sh/syscallent.h: New file.
* linux/sh/errnoent.h: New file.
* linux/sh/ioctlent.h: New file.
* linux/sh/signalent.h: New file.
* mem.c [LINUX] (sys_remap_file_pages): New function.
* linux/syscall.h: Declare it.
* linux/syscallent.h: Use it.
* linux/powerpc/syscallent.h: Likewise.
* linux/syscallent.h: Add some new 2.5 syscall names.
Now clone takes 5 args.
* process.c [LINUX] (clone_flags): Update with 2.5 flag bits.
[LINUX] (sys_clone): Print new args.
* mem.c (print_ldt_entry): Make global.
