mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
* include/libc-symbols.h [!__ASSEMBLER__] (strong_alias):
Add extra level of macro expansion. [!__ASSEMBLER__ && HAVE_WEAK_SYMBOLS] (weak_alias): nLikewise. * sysdeps/generic/bp-thunks.h: Ensure `struct timeval' definition is available at the time `select' prototype is declared. * sysdeps/unix/make-syscalls.sh: Remove unused variables. Collect non-versioned weak aliases. Consider only non-versioned aliases for the user-visible systemcall name. Do checks inline with call to primitive system call. * sysdeps/unix/sysv/linux/ptrace.c (ptrace): Add void cast to stand-alone bounds checks to suppress unused value warnings. * sysdeps/unix/sysv/linux/sysctl.c (__sysctl): Likewise. 2000-07-11 Greg McGary <greg@mcgary.org> * include/libc-symbols.h [!__ASSEMBLER__] (strong_alias): Add extra level of macro expansion. [!__ASSEMBLER__ && HAVE_WEAK_SYMBOLS] (weak_alias): nLikewise. * sysdeps/generic/bp-thunks.h: Ensure `struct timeval' definition is available at the time `select' prototype is declared. * sysdeps/unix/make-syscalls.sh: Remove unused variables. Collect non-versioned weak aliases. Consider only non-versioned aliases for the user-visible systemcall name. Do checks inline with call to primitive system call. * sysdeps/unix/sysv/linux/ptrace.c (ptrace): Add void cast to stand-alone bounds checks to suppress unused value warnings. * sysdeps/unix/sysv/linux/sysctl.c (__sysctl): Likewise.
This commit is contained in:
Greg McGary
parent
19624ed68f
commit
c62f5cab71
15
ChangeLog
15
ChangeLog
@ -1,3 +1,18 @@
|
||||
2000-07-11 Greg McGary <greg@mcgary.org>
|
||||
|
||||
* include/libc-symbols.h [!__ASSEMBLER__] (strong_alias):
|
||||
Add extra level of macro expansion.
|
||||
[!__ASSEMBLER__ && HAVE_WEAK_SYMBOLS] (weak_alias): nLikewise.
|
||||
* sysdeps/generic/bp-thunks.h: Ensure `struct timeval' definition
|
||||
is available at the time `select' prototype is declared.
|
||||
* sysdeps/unix/make-syscalls.sh: Remove unused variables.
|
||||
Collect non-versioned weak aliases. Consider only non-versioned
|
||||
aliases for the user-visible systemcall name. Do checks inline with
|
||||
call to primitive system call.
|
||||
* sysdeps/unix/sysv/linux/ptrace.c (ptrace): Add void cast to
|
||||
stand-alone bounds checks to suppress unused value warnings.
|
||||
* sysdeps/unix/sysv/linux/sysctl.c (__sysctl): Likewise.
|
||||
|
||||
2000-07-10 Mark Kettenis <kettenis@gnu.org>
|
||||
|
||||
* sysdeps/mach/hurd/check_fds.c: New file. Implements
|
||||
|
||||
@ -81,7 +81,8 @@
|
||||
possible, instead of embedded assembly language. */
|
||||
|
||||
/* Define ALIASNAME as a strong alias for NAME. */
|
||||
# define strong_alias(name, aliasname) \
|
||||
# define strong_alias(name, aliasname) _strong_alias(name, aliasname)
|
||||
# define _strong_alias(name, aliasname) \
|
||||
extern __typeof (name) aliasname __attribute__ ((alias (#name)));
|
||||
|
||||
/* This comes between the return type and function name in
|
||||
@ -93,7 +94,8 @@
|
||||
|
||||
/* Define ALIASNAME as a weak alias for NAME.
|
||||
If weak aliases are not available, this defines a strong alias. */
|
||||
# define weak_alias(name, aliasname) \
|
||||
# define weak_alias(name, aliasname) _weak_alias (name, aliasname)
|
||||
# define _weak_alias(name, aliasname) \
|
||||
extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
|
||||
|
||||
/* Declare SYMBOL as weak undefined symbol (resolved to 0 if not defined). */
|
||||
|
||||
@ -31,12 +31,19 @@
|
||||
#include <libc-symbols.h>
|
||||
#include <bp-sym.h>
|
||||
#include <bp-checks.h>
|
||||
|
||||
/* Get `struct timeval' definition for select. */
|
||||
#define __need_timeval
|
||||
#include <bits/time.h>
|
||||
|
||||
#include <stddef.h>
|
||||
#include <unistd.h>
|
||||
#include <sched.h>
|
||||
#include <signal.h>
|
||||
#include <fcntl.h>
|
||||
#include <time.h>
|
||||
#include <utime.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/klog.h>
|
||||
|
||||
@ -23,14 +23,8 @@
|
||||
ptrlet='[abBfNpPs]'
|
||||
argdig='[1-9]'
|
||||
fixarg='[^vV]'$argdig # fixed args (declare extern)
|
||||
strarg=s$argdig # string arg (check with CHECK_STRING)
|
||||
twoarg=f$argdig # fd pair arg (check with CHECK_N (..., 2)
|
||||
objarg=p$argdig # object arg (check with CHECK_1)
|
||||
ptrarg=$ptrlet$argdig # pointer arg (toss bounds)
|
||||
rtnarg='P'$argdig # pointer return value (add bounds)
|
||||
bufarg='[bB]'$argdig # buffer arg (check with CHECK_N)
|
||||
intarg='[inv]'$argdig # scalar arg
|
||||
borarg='[iv]'$argdig # boring arg (just pass it through)
|
||||
|
||||
##############################################################################
|
||||
|
||||
@ -193,8 +187,14 @@ shared-only-routines += $file
|
||||
x-,-,* | x*,*.[sS],*V*) ;;
|
||||
x*,-,*$ptrlet* | x*,*.[sS],*$ptrlet*)
|
||||
|
||||
nv_weak=`for name in $weak; do
|
||||
case $name in
|
||||
*@*) ;;
|
||||
*) echo $name;;
|
||||
esac; done`
|
||||
|
||||
# choose the name with the fewest leading underscores, preferably none
|
||||
set `echo $strong $weak |tr ' \t' '\n' |sort -r`
|
||||
set `echo $strong $nv_weak |tr '@ \t' ' \n\n' |sort -r`
|
||||
callname=$1
|
||||
|
||||
# convert signature string to individual numbered arg names
|
||||
@ -237,31 +237,22 @@ shared-only-routines += $file
|
||||
-e 's/\('$ptrarg'\)/__typeof (\1v) *__unbounded/g' \
|
||||
-e 's/\('$intarg'\)/__typeof (\1v)/g'`); \\'; \\"
|
||||
|
||||
# generate thunk bounds checks
|
||||
for arg; do
|
||||
next=$2; shift
|
||||
case $arg in
|
||||
B$argdig) echo " echo ' __ptrvalue (${arg}a) && \\'; \\" ;;
|
||||
esac
|
||||
case $arg in
|
||||
n$argdig) len=$arg ;; ### save for possible use with return value.
|
||||
$strarg) echo " echo ' CHECK_STRING (${arg}a); \\'; \\" ;;
|
||||
$objarg) echo " echo ' CHECK_1 (${arg}a); \\'; \\" ;;
|
||||
$twoarg) echo " echo ' CHECK_N (${arg}a, 2); \\'; \\" ;;
|
||||
$bufarg)
|
||||
case $next in
|
||||
n$argdig) echo " echo ' CHECK_N (${arg}a, ${next}a); \\'; \\" ;;
|
||||
N$argdig) echo " echo ' CHECK_N (${arg}a, *CHECK_1 (${next}a)); \\'; \\" ;;
|
||||
*) echo "### BP Thunk Error: Expected length after buffer ###" ;;
|
||||
esac ;;
|
||||
esac
|
||||
done
|
||||
# stash length arg for use with mman calls that return pointers
|
||||
len=`echo $args |sed -e 's/.*\('n$argdig'\).*/\1/'`
|
||||
|
||||
# generate thunk epilogue
|
||||
funcall="($callname) (`echo $args | \
|
||||
sed -e 's/ /, /g' \
|
||||
-e 's/\('$ptrarg'\)/__ptrvalue (\1a)/g' \
|
||||
-e 's/\('$intarg'\)/\1a/g'`)"
|
||||
sed -e 's/ /, /g' \
|
||||
-e 's/\('a$argdig'\)/__ptrvalue (\1a)/g' \
|
||||
-e 's/\('s$argdig'\)/CHECK_STRING (\1a)/g' \
|
||||
-e 's/\('p$argdig'\)/CHECK_1 (\1a)/g' \
|
||||
-e 's/\('f$argdig'\)/CHECK_N (\1a, 2)/g' \
|
||||
-e 's/\('b$argdig'\), \('n$argdig'\)/CHECK_N (\1a, \2), \2/g' \
|
||||
-e 's/\('b$argdig'\), \('N$argdig'\)/CHECK_N (\1a, *CHECK_1 (\2a)), __ptrvalue (\2a)/g' \
|
||||
-e 's/\('B$argdig'\), \('n$argdig'\)/CHECK_Nopt (\1a, \2), \2/g' \
|
||||
-e 's/\('B$argdig'\), \('N$argdig'\)/CHECK_Nopt (\1a, *CHECK_1 (\2a)), __ptrvalue (\2a)/g' \
|
||||
-e 's/\('[ivn]$argdig'\)/\1a/g'`)"
|
||||
|
||||
case $rtn in
|
||||
P*) echo " echo '{ __typeof ($rtn) *__bounded rtn; \\'; \\
|
||||
echo ' __ptrlow (rtn) = __ptrvalue (rtn) = $funcall; \\'; \\
|
||||
@ -271,12 +262,10 @@ shared-only-routines += $file
|
||||
echo " echo '} \\'; \\"
|
||||
|
||||
# generate thunk aliases
|
||||
for name in $weak; do
|
||||
case $name in
|
||||
*@*) ;;
|
||||
*) echo " echo 'weak_alias (BP_SYM ($strong), BP_SYM ($name)) \\'; \\" ;;
|
||||
esac
|
||||
for name in $nv_weak; do
|
||||
echo " echo 'weak_alias (BP_SYM ($strong), BP_SYM ($name)) \\'; \\"
|
||||
done
|
||||
|
||||
# wrap up
|
||||
echo "\
|
||||
echo ''; \\
|
||||
|
||||
@ -55,40 +55,40 @@ ptrace (enum __ptrace_request request, ...)
|
||||
case PTRACE_POKETEXT:
|
||||
case PTRACE_POKEDATA:
|
||||
case PTRACE_POKEUSER:
|
||||
CHECK_1 ((int *) addr);
|
||||
CHECK_1 ((int *) data);
|
||||
(void) CHECK_1 ((int *) addr);
|
||||
(void) CHECK_1 ((int *) data);
|
||||
break;
|
||||
|
||||
case PTRACE_GETREGS:
|
||||
case PTRACE_SETREGS:
|
||||
#ifdef __i386__
|
||||
CHECK_1 ((struct user_regs_struct *) data);
|
||||
(void) CHECK_1 ((struct user_regs_struct *) data);
|
||||
#else
|
||||
/* We don't know the size of data, so the best we can do is ensure
|
||||
that `data' is valid for at least one word. */
|
||||
CHECK_1 ((int *) data);
|
||||
(void) CHECK_1 ((int *) data);
|
||||
#endif
|
||||
break;
|
||||
|
||||
case PTRACE_GETFPREGS:
|
||||
case PTRACE_SETFPREGS:
|
||||
#ifdef __i386__
|
||||
CHECK_1 ((struct user_fpregs_struct *) data);
|
||||
(void) CHECK_1 ((struct user_fpregs_struct *) data);
|
||||
#else
|
||||
/* We don't know the size of data, so the best we can do is ensure
|
||||
that `data' is valid for at least one word. */
|
||||
CHECK_1 ((int *) data);
|
||||
(void) CHECK_1 ((int *) data);
|
||||
#endif
|
||||
break;
|
||||
|
||||
case PTRACE_GETFPXREGS:
|
||||
case PTRACE_SETFPXREGS:
|
||||
#ifdef __i386__
|
||||
CHECK_1 ((struct user_fpxregs_struct *) data);
|
||||
(void) CHECK_1 ((struct user_fpxregs_struct *) data);
|
||||
#else
|
||||
/* We don't know the size of data, so the best we can do is ensure
|
||||
that `data' is valid for at least one word. */
|
||||
CHECK_1 ((int *) data);
|
||||
(void) CHECK_1 ((int *) data);
|
||||
#endif
|
||||
break;
|
||||
};
|
||||
|
||||
@ -40,9 +40,9 @@ __sysctl (int *name, int nlen, void *oldval, size_t *oldlenp,
|
||||
newval: newval,
|
||||
newlen: newlen
|
||||
};
|
||||
CHECK_N (name, nlen);
|
||||
CHECK_N (oldval, *oldlenp);
|
||||
CHECK_N (newval, newlen);
|
||||
(void) CHECK_N (name, nlen);
|
||||
(void) CHECK_N (oldval, *oldlenp);
|
||||
(void) CHECK_N (newval, newlen);
|
||||
|
||||
return INLINE_SYSCALL (_sysctl, 1, __ptrvalue (&args));
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user