diff options
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rwxr-xr-x | configure | 46 | ||||
| -rw-r--r-- | hurd/hurdsig.c | 49 |
3 files changed, 57 insertions, 41 deletions
@@ -1,5 +1,8 @@ Thu Apr 20 22:23:58 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> + * hurd/hurdsig.c: Use assert_perror for many calls which should + never fail and previously were not checked. + * sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler): Point the return address for sigreturn's frame at a "hlt" insn so it will definitely crash if sigreturn returns. @@ -621,6 +621,19 @@ none) base_os='' ;; esac +# Some configurations imply other options. +case "$os" in +gnu* | linux* | bsd4.4* | netbsd* | freebsd*) + # These systems always use GNU tools. + gnu_ld=yes gnu_as=yes +esac +case "$os" in +gnu*elf* | linux* | sysv4* | solaris2*) + # These systems always use the ELF format. + elf=yes +esac + + # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. tail=$os ostry=$os @@ -647,6 +660,10 @@ mach= tail=$machine while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do set $m + # If using ELF, look for an `elf' subdirectory of each machine directory. + if test "$elf" = yes; then + mach="$mach /$1/elf" + fi mach="$mach /$1" tail="$2" done @@ -680,18 +697,6 @@ fi # We have now validated the configuration. -# Some configurations imply other options. -case "$host_os" in -gnu* | linux* | bsd4.4* | netbsd* | freebsd*) - # These systems always use GNU tools. - gnu_ld=yes gnu_as=yes -esac -case "$host_os" in -gnu*elf* | linux* | sysv4* | solaris2*) - # These systems always use the ELF format. - elf=yes -esac - # Remove the leading slashes. sysnames="`echo $sysnames | sed -e 's@^/@@' -e 's@ /@ @g'`" @@ -707,17 +712,6 @@ if test "$with_fp" = yes; then sysnames="`echo $fpu_dirs | sed -e 's,^/,,' -e 's, /,,g'` $sysnames" fi -# If using ELF, prepend the machine-specific ELF ABI directory. -if test "$elf" = yes; then - elf_dirs= - for m in $mach; do - if test -d $sysdep_dir$m/elf; then - elf_dirs="elf_dirs $m/elf" - fi - done - sysnames="`echo elf_dirs | sed -e 's,^/,,' -e 's, /,,g'` $sysnames" -fi - # Expand the list of system names into a full list of directories @@ -999,7 +993,7 @@ else # On the NeXT, cc -E runs the code through the compiler's parser, # not just through cpp. cat > conftest.$ac_ext <<EOF -#line 1003 "configure" +#line 997 "configure" #include "confdefs.h" #include <assert.h> Syntax Error @@ -1013,7 +1007,7 @@ else rm -rf conftest* CPP="${CC-cc} -E -traditional-cpp" cat > conftest.$ac_ext <<EOF -#line 1017 "configure" +#line 1011 "configure" #include "confdefs.h" #include <assert.h> Syntax Error @@ -1065,7 +1059,7 @@ if eval "test \"`echo '$''{'libc_cv_friendly_stddef'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&4 else cat > conftest.$ac_ext <<EOF -#line 1069 "configure" +#line 1063 "configure" #include "confdefs.h" #define __need_size_t #define __need_wchar_t diff --git a/hurd/hurdsig.c b/hurd/hurdsig.c index d93d4c2..9620a00 100644 --- a/hurd/hurdsig.c +++ b/hurd/hurdsig.c @@ -62,7 +62,7 @@ _hurd_thread_sigstate (thread_t thread) __mutex_lock (&_hurd_siglock); for (ss = _hurd_sigstates; ss != NULL; ss = ss->next) if (ss->thread == thread) - break; + break; if (ss == NULL) { ss = malloc (sizeof (*ss)); @@ -185,11 +185,14 @@ post_reply (mach_port_t *reply_port, mach_msg_type_name_t reply_port_type, int untraced, error_t result) { + error_t err; if (reply_port == NULL || *reply_port == MACH_PORT_NULL) return; - (untraced ? __msg_sig_post_untraced_reply : __msg_sig_post_reply) + err = (untraced ? __msg_sig_post_untraced_reply : __msg_sig_post_reply) (*reply_port, reply_port_type, result); *reply_port = MACH_PORT_NULL; + if (err != MACH_SEND_INVALID_DEST) /* Ignore dead reply port. */ + assert_perror (err); } @@ -208,7 +211,8 @@ abort_thread (struct hurd_sigstate *ss, struct machine_thread_all_state *state, { if (!(state->set & THREAD_ABORTED)) { - __thread_abort (ss->thread); + error_t err = __thread_abort (ss->thread); + assert_perror (err); /* Clear all thread state flavor set bits, because thread_abort may have changed the state. */ state->set = THREAD_ABORTED; @@ -423,6 +427,7 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss, mach_msg_type_name_t reply_port_type, int untraced) { + error_t err; struct machine_thread_all_state thread_state; enum { stop, ignore, core, term, handle } act; sighandler_t handler; @@ -601,8 +606,13 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss, { if (threads[i] != _hurd_msgport_thread && (act != handle || threads[i] != ss->thread)) - __thread_resume (threads[i]); - __mach_port_deallocate (__mach_task_self (), threads[i]); + { + err = __thread_resume (threads[i]); + assert_perror (err); + } + err = __mach_port_deallocate (__mach_task_self (), + threads[i]); + assert_perror (err); } __vm_deallocate (__mach_task_self (), (vm_address_t) threads, @@ -641,10 +651,13 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss, { case stop: if (_hurd_stopped) - /* We are already stopped, but receiving an untraced stop - signal. Instead of resuming and suspending again, just - notify the proc server of the new stop signal. */ - __USEPORT (PROC, __proc_mark_stop (port, signo)); + { + /* We are already stopped, but receiving an untraced stop + signal. Instead of resuming and suspending again, just + notify the proc server of the new stop signal. */ + error_t err = __USEPORT (PROC, __proc_mark_stop (port, signo)); + assert_perror (err); + } else /* Suspend the process. */ suspend (); @@ -658,7 +671,8 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss, case core: /* And leave a rotting corpse. */ nirvana: /* Have the proc server stop all other threads in our task. */ - __USEPORT (PROC, __proc_dostop (port, _hurd_msgport_thread)); + err = __USEPORT (PROC, __proc_dostop (port, _hurd_msgport_thread)); + assert_perror (err); /* No more user instructions will be executed. The signal can now be considered delivered. */ reply (); @@ -684,7 +698,10 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss, /* Stop the thread and abort its pending RPC operations. */ if (! ss_suspended) - __thread_suspend (ss->thread); + { + err = __thread_suspend (ss->thread); + assert_perror (err); + } /* Abort the thread's kernel context, so any pending message send or receive completes immediately or aborts. If an interruptible @@ -750,10 +767,12 @@ _hurd_internal_post_signal (struct hurd_sigstate *ss, /* Start the thread running the handler (or possibly waiting for an RPC reply before running the handler). */ - __thread_set_state (ss->thread, MACHINE_THREAD_STATE_FLAVOR, - (natural_t *) &thread_state.basic, - MACHINE_THREAD_STATE_COUNT); - __thread_resume (ss->thread); + err = __thread_set_state (ss->thread, MACHINE_THREAD_STATE_FLAVOR, + (natural_t *) &thread_state.basic, + MACHINE_THREAD_STATE_COUNT); + assert_perror (err); + err = __thread_resume (ss->thread); + assert_perror (err); thread_state.set = 0; /* Everything we know is now wrong. */ break; } |