00001
00005 #include "system.h"
00006
00007 #if defined(__LCLINT__)
00008 #define _BITS_SIGTHREAD_H
00009
00010
00011
00012
00013 extern int sighold(int sig)
00014 ;
00015 extern int sigignore(int sig)
00016 ;
00017 extern int sigpause(int sig)
00018 ;
00019 extern int sigrelse(int sig)
00020 ;
00021 extern void (*sigset(int sig, void (*disp)(int)))(int)
00022 ;
00023
00024 struct qelem;
00025 extern void __insque(struct qelem * __elem, struct qelem * __prev)
00026 ;
00027 extern void __remque(struct qelem * __elem)
00028 ;
00029
00030 extern pthread_t pthread_self(void)
00031 ;
00032 extern int pthread_equal(pthread_t t1, pthread_t t2)
00033 ;
00034
00035 extern int pthread_create( pthread_t *restrict thread,
00036 const pthread_attr_t *restrict attr,
00037 void *(*start_routine)(void*), void *restrict arg)
00038 ;
00039 extern int pthread_join(pthread_t thread, void **value_ptr)
00040 ;
00041
00042 extern int pthread_setcancelstate(int state, int *oldstate)
00043
00044 ;
00045 extern int pthread_setcanceltype(int type, int *oldtype)
00046
00047 ;
00048 extern void pthread_testcancel(void)
00049
00050 ;
00051 extern void pthread_cleanup_pop(int execute)
00052
00053 ;
00054 extern void pthread_cleanup_push(void (*routine)(void*), void *arg)
00055
00056 ;
00057 extern void _pthread_cleanup_pop( struct _pthread_cleanup_buffer *__buffer, int execute)
00058
00059 ;
00060 extern void _pthread_cleanup_push( struct _pthread_cleanup_buffer *__buffer, void (*routine)(void*), void *arg)
00061
00062 ;
00063
00064 extern int pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
00065
00066 ;
00067 extern int pthread_mutexattr_init( pthread_mutexattr_t *attr)
00068
00069 ;
00070
00071 int pthread_mutexattr_gettype(const pthread_mutexattr_t *restrict attr,
00072 int *restrict type)
00073 ;
00074 int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type)
00075
00076 ;
00077
00078 extern int pthread_mutex_destroy(pthread_mutex_t *mutex)
00079 ;
00080 extern int pthread_mutex_init( pthread_mutex_t *restrict mutex,
00081 const pthread_mutexattr_t *restrict attr)
00082
00083 ;
00084
00085 extern int pthread_mutex_lock(pthread_mutex_t *mutex)
00086
00087 ;
00088 extern int pthread_mutex_trylock(pthread_mutex_t *mutex)
00089
00090 ;
00091 extern int pthread_mutex_unlock(pthread_mutex_t *mutex)
00092
00093 ;
00094
00095 extern int pthread_cond_destroy(pthread_cond_t *cond)
00096 ;
00097 extern int pthread_cond_init( pthread_cond_t *restrict cond,
00098 const pthread_condattr_t *restrict attr)
00099
00100 ;
00101
00102 extern int pthread_cond_timedwait(pthread_cond_t *restrict cond,
00103 pthread_mutex_t *restrict mutex,
00104 const struct timespec *restrict abstime)
00105 ;
00106 extern int pthread_cond_wait(pthread_cond_t *restrict cond,
00107 pthread_mutex_t *restrict mutex)
00108 ;
00109 extern int pthread_cond_broadcast(pthread_cond_t *cond)
00110
00111 ;
00112 extern int pthread_cond_signal(pthread_cond_t *cond)
00113
00114 ;
00115
00116
00117
00118 #endif
00119
00120 #include <signal.h>
00121 #if !defined(__QNX__)
00122 # include <sys/signal.h>
00123 #endif
00124 #include <sys/wait.h>
00125 #include <search.h>
00126
00127
00128 #if !defined(HAVE_SIGHOLD) && defined(HAVE_SIGPROCMASK) && defined(HAVE_SIGADDSET)
00129 static int __RPM_sighold(int sig)
00130 {
00131 sigset_t set;
00132 if (sigprocmask(SIG_SETMASK, NULL, &set) < 0)
00133 return -1;
00134 if (sigaddset(&set, sig) < 0)
00135 return -1;
00136 return sigprocmask(SIG_SETMASK, &set, NULL);
00137 }
00138 #define sighold(sig) __RPM_sighold(sig)
00139 #endif
00140
00141
00142 #if !defined(HAVE_SIGRELSE) && defined(HAVE_SIGPROCMASK) && defined(HAVE_SIGDELSET)
00143 static int __RPM_sigrelse(int sig)
00144 {
00145 sigset_t set;
00146 if (sigprocmask(SIG_SETMASK, NULL, &set) < 0)
00147 return -1;
00148 if (sigdelset(&set, sig) < 0)
00149 return -1;
00150 return sigprocmask(SIG_SETMASK, &set, NULL);
00151 }
00152 #define sigrelse(sig) __RPM_sigrelse(sig)
00153 #endif
00154
00155
00156 #if !defined(HAVE_SIGPAUSE) && defined(HAVE_SIGEMPTYSET) && defined(HAVE_SIGADDSET) && defined(HAVE_SIGSUSPEND)
00157 static int __RPM_sigpause(int sig)
00158 {
00159 sigset_t set;
00160 if (sigemptyset(&set) < 0)
00161 return -1;
00162 if (sigaddset(&set, sig) < 0)
00163 return -1;
00164 return sigsuspend(&set);
00165 }
00166 #define sigpause(sig) __RPM_sigpause(sig)
00167 #endif
00168
00169
00170 #if defined(__CYGWIN__) || defined(__MINGW32__) || defined(__QNX__)
00171 struct qelem {
00172 struct qelem *q_forw;
00173 struct qelem *q_back;
00174 };
00175
00176 static void __insque(struct qelem * elem, struct qelem * pred)
00177 {
00178 elem -> q_forw = pred -> q_forw;
00179 pred -> q_forw -> q_back = elem;
00180 elem -> q_back = pred;
00181 pred -> q_forw = elem;
00182 }
00183 #define insque(_e, _p) __insque((_e), (_p))
00184
00185 static void __remque(struct qelem * elem)
00186 {
00187 elem -> q_forw -> q_back = elem -> q_back;
00188 elem -> q_back -> q_forw = elem -> q_forw;
00189 }
00190 #define remque(_e) __remque(_e)
00191 #endif
00192
00193 #if defined(WITH_PTHREADS)
00194
00195 # if !defined(__QNX__)
00196
00197 # if PTHREAD_MUTEX_DEFAULT != PTHREAD_MUTEX_NORMAL
00198 # error RPM expects PTHREAD_MUTEX_DEFAULT == PTHREAD_MUTEX_NORMAL
00199 # endif
00200 # endif
00201
00202 #ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
00203
00204 static pthread_mutex_t rpmsigTbl_lock = PTHREAD_MUTEX_INITIALIZER;
00205 #else
00206
00207
00208 static pthread_mutex_t rpmsigTbl_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
00209
00210 #endif
00211
00212
00213 #define DO_LOCK() pthread_mutex_lock(&rpmsigTbl_lock);
00214 #define DO_UNLOCK() pthread_mutex_unlock(&rpmsigTbl_lock);
00215 #define INIT_LOCK() \
00216 { pthread_mutexattr_t attr; \
00217 (void) pthread_mutexattr_init(&attr); \
00218 (void) pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); \
00219 (void) pthread_mutex_init (&rpmsigTbl_lock, &attr); \
00220 (void) pthread_mutexattr_destroy(&attr); \
00221 rpmsigTbl_sigchld->active = 0; \
00222 }
00223 #define ADD_REF(__tbl) (__tbl)->active++
00224 #define SUB_REF(__tbl) --(__tbl)->active
00225 #define CLEANUP_HANDLER(__handler, __arg, __oldtypeptr) \
00226 (void) pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, (__oldtypeptr));\
00227 pthread_cleanup_push((__handler), (__arg));
00228 #define CLEANUP_RESET(__execute, __oldtype) \
00229 pthread_cleanup_pop(__execute); \
00230 (void) pthread_setcanceltype ((__oldtype), &(__oldtype));
00231
00232 #define SAME_THREAD(_a, _b) pthread_equal(((pthread_t)_a), ((pthread_t)_b))
00233
00234
00235 #define ME() __tid2vp(pthread_self())
00236
00237 static void *__tid2vp(pthread_t tid)
00238
00239 {
00240 union { pthread_t tid; void *vp; } u;
00241 u.tid = tid;
00242 return u.vp;
00243 }
00244
00245 #else
00246
00247
00248 #define DO_LOCK() (0)
00249 #define DO_UNLOCK() (0)
00250 #define INIT_LOCK()
00251 #define ADD_REF(__tbl) (0)
00252 #define SUB_REF(__tbl) (0)
00253 #define CLEANUP_HANDLER(__handler, __arg, __oldtypeptr)
00254 #define CLEANUP_RESET(__execute, __oldtype)
00255
00256 #define SAME_THREAD(_a, _b) (42)
00257
00258
00259 #define ME() __pid2vp(getpid())
00260
00261 static void *__pid2vp(pid_t pid)
00262
00263 {
00264 union { pid_t pid; void *vp; } u;
00265 u.pid = pid;
00266 return u.vp;
00267 }
00268
00269 #endif
00270
00271 #define _RPMSQ_INTERNAL
00272 #include <rpmsq.h>
00273
00274 #include "debug.h"
00275
00276 #define _RPMSQ_DEBUG 0
00277
00278 int _rpmsq_debug = _RPMSQ_DEBUG;
00279
00280
00281
00282
00283 static struct rpmsqElem rpmsqRock = { .q_forw = &rpmsqRock };
00284
00285
00286
00287
00288 rpmsq rpmsqQueue = &rpmsqRock;
00289
00290
00291 int rpmsqInsert(void * elem, void * prev)
00292 {
00293 rpmsq sq = (rpmsq) elem;
00294 int ret = -1;
00295
00296 if (sq != NULL) {
00297 #ifdef _RPMSQ_DEBUG
00298 if (_rpmsq_debug)
00299 fprintf(stderr, " Insert(%p): %p\n", ME(), sq);
00300 #endif
00301 ret = sighold(SIGCHLD);
00302 if (ret == 0) {
00303 sq->child = 0;
00304 sq->reaped = 0;
00305 sq->status = 0;
00306
00307 sq->reaper = 1;
00308 sq->pipes[0] = sq->pipes[1] = -1;
00309
00310 sq->id = ME();
00311
00312 insque(elem, (prev != NULL ? prev : rpmsqQueue));
00313
00314 ret = sigrelse(SIGCHLD);
00315 }
00316 }
00317 return ret;
00318 }
00319
00320 int rpmsqRemove(void * elem)
00321 {
00322 rpmsq sq = (rpmsq) elem;
00323 int ret = -1;
00324
00325 if (elem != NULL) {
00326
00327 #ifdef _RPMSQ_DEBUG
00328 if (_rpmsq_debug)
00329 fprintf(stderr, " Remove(%p): %p\n", ME(), sq);
00330 #endif
00331 ret = sighold (SIGCHLD);
00332 if (ret == 0) {
00333
00334 remque(elem);
00335
00336 sq->id = NULL;
00337 if (sq->pipes[1] > 0) ret = close(sq->pipes[1]);
00338 if (sq->pipes[0] > 0) ret = close(sq->pipes[0]);
00339 sq->pipes[0] = sq->pipes[1] = -1;
00340 #ifdef NOTYET
00341 sq->status = 0;
00342 sq->reaped = 0;
00343 sq->child = 0;
00344 #endif
00345 ret = sigrelse(SIGCHLD);
00346 }
00347 }
00348 return ret;
00349 }
00350
00351
00352 sigset_t rpmsqCaught;
00353
00354
00355
00356 static struct rpmsig_s {
00357 int signum;
00358 void (*handler) (int signum, void * info, void * context);
00359 int active;
00360 struct sigaction oact;
00361 } rpmsigTbl[] = {
00362 { SIGINT, rpmsqAction },
00363 #define rpmsigTbl_sigint (&rpmsigTbl[0])
00364 { SIGQUIT, rpmsqAction },
00365 #define rpmsigTbl_sigquit (&rpmsigTbl[1])
00366 { SIGCHLD, rpmsqAction },
00367 #define rpmsigTbl_sigchld (&rpmsigTbl[2])
00368 { SIGHUP, rpmsqAction },
00369 #define rpmsigTbl_sighup (&rpmsigTbl[3])
00370 { SIGTERM, rpmsqAction },
00371 #define rpmsigTbl_sigterm (&rpmsigTbl[4])
00372 { SIGPIPE, rpmsqAction },
00373 #define rpmsigTbl_sigpipe (&rpmsigTbl[5])
00374
00375 #ifdef NOTYET
00376 #if defined(SIGXCPU)
00377 { SIGXCPU, rpmsqAction },
00378 #define rpmsigTbl_sigxcpu (&rpmsigTbl[6])
00379 #endif
00380 #if defined(SIGXFSZ)
00381 { SIGXFSZ, rpmsqAction },
00382 #define rpmsigTbl_sigxfsz (&rpmsigTbl[7])
00383 #endif
00384 #endif
00385
00386 { -1, NULL },
00387 };
00388
00389
00390 void rpmsqAction(int signum, void * info,
00391 void * context)
00392 {
00393 int save = errno;
00394 rpmsig tbl;
00395
00396 for (tbl = rpmsigTbl; tbl->signum >= 0; tbl++) {
00397 if (tbl->signum != signum)
00398 continue;
00399
00400 (void) sigaddset(&rpmsqCaught, signum);
00401
00402 switch (signum) {
00403 case SIGCHLD:
00404 while (1) {
00405 rpmsq sq;
00406 int status = 0;
00407 pid_t reaped = waitpid(0, &status, WNOHANG);
00408
00409
00410 if (reaped <= 0)
00411 break;
00412
00413
00414 for (sq = rpmsqQueue->q_forw;
00415 sq != NULL && sq != rpmsqQueue;
00416 sq = sq->q_forw)
00417 {
00418 int ret;
00419
00420 if (sq->child != reaped)
00421 continue;
00422 sq->reaped = reaped;
00423 sq->status = status;
00424
00425 ret = close(sq->pipes[1]); sq->pipes[1] = -1;
00426
00427 break;
00428 }
00429 }
00430 break;
00431 default:
00432 break;
00433 }
00434 break;
00435 }
00436 errno = save;
00437 }
00438
00439 int rpmsqEnable(int signum, rpmsqAction_t handler)
00440
00441
00442 {
00443 int tblsignum = (signum >= 0 ? signum : -signum);
00444 struct sigaction sa;
00445 rpmsig tbl;
00446 int ret = -1;
00447 int xx;
00448
00449 xx = DO_LOCK ();
00450 if (rpmsqQueue->id == NULL)
00451 rpmsqQueue->id = ME();
00452 for (tbl = rpmsigTbl; tbl->signum >= 0; tbl++) {
00453 if (tblsignum != tbl->signum)
00454 continue;
00455
00456 if (signum >= 0) {
00457 if (ADD_REF(tbl) <= 0) {
00458 (void) sigdelset(&rpmsqCaught, tbl->signum);
00459
00460
00461 (void) sigaction(tbl->signum, NULL, &tbl->oact);
00462 if (tbl->oact.sa_handler == SIG_IGN)
00463 continue;
00464
00465 (void) sigemptyset (&sa.sa_mask);
00466 sa.sa_flags = SA_SIGINFO;
00467 #if defined(__LCLINT__)
00468 sa.sa_handler = (handler != NULL ? handler : tbl->handler);
00469 #else
00470 sa.sa_sigaction = (void *) (handler != NULL ? handler : tbl->handler);
00471 #endif
00472 if (sigaction(tbl->signum, &sa, &tbl->oact) < 0) {
00473 xx = SUB_REF(tbl);
00474 break;
00475 }
00476 tbl->active = 1;
00477 if (handler != NULL)
00478 tbl->handler = handler;
00479 }
00480 } else {
00481 if (SUB_REF(tbl) <= 0) {
00482 if (sigaction(tbl->signum, &tbl->oact, NULL) < 0)
00483 break;
00484 tbl->active = 0;
00485 tbl->handler = (handler != NULL ? handler : rpmsqAction);
00486 }
00487 }
00488 ret = tbl->active;
00489 break;
00490 }
00491 xx = DO_UNLOCK ();
00492 return ret;
00493 }
00494
00495 pid_t rpmsqFork(rpmsq sq)
00496 {
00497 pid_t pid;
00498 int xx;
00499
00500 if (sq->reaper) {
00501 xx = rpmsqInsert(sq, NULL);
00502 #ifdef _RPMSQ_DEBUG
00503 if (_rpmsq_debug)
00504 fprintf(stderr, " Enable(%p): %p\n", ME(), sq);
00505 #endif
00506 xx = rpmsqEnable(SIGCHLD, NULL);
00507 }
00508
00509 xx = pipe(sq->pipes);
00510
00511 xx = sighold(SIGCHLD);
00512
00513 pid = fork();
00514 if (pid < (pid_t) 0) {
00515 sq->child = (pid_t)-1;
00516 xx = close(sq->pipes[0]);
00517 xx = close(sq->pipes[1]);
00518 sq->pipes[0] = sq->pipes[1] = -1;
00519 goto out;
00520 } else if (pid == (pid_t) 0) {
00521 int yy;
00522
00523
00524 xx = close(sq->pipes[1]);
00525 if (sq->reaper)
00526 xx = (int)read(sq->pipes[0], &yy, sizeof(yy));
00527 xx = close(sq->pipes[0]);
00528 sq->pipes[0] = sq->pipes[1] = -1;
00529
00530 #ifdef _RPMSQ_DEBUG
00531 if (_rpmsq_debug)
00532 fprintf(stderr, " Child(%p): %p child %d\n", ME(), sq, (int)getpid());
00533 #endif
00534
00535 } else {
00536
00537 sq->child = pid;
00538
00539 #ifdef _RPMSQ_DEBUG
00540 if (_rpmsq_debug)
00541 fprintf(stderr, " Parent(%p): %p child %d\n", ME(), sq, (int)sq->child);
00542 #endif
00543
00544 }
00545
00546 out:
00547 xx = sigrelse(SIGCHLD);
00548 return sq->child;
00549 }
00550
00557 static int rpmsqWaitUnregister(rpmsq sq)
00558
00559
00560 {
00561 int nothreads = 0;
00562 int ret = 0;
00563 int xx;
00564
00565 assert(sq->reaper);
00566
00567 ret = sighold(SIGCHLD);
00568
00569
00570 if (sq->pipes[0] >= 0)
00571 xx = close(sq->pipes[0]);
00572 if (sq->pipes[1] >= 0)
00573 xx = close(sq->pipes[1]);
00574
00575
00576 xx = pipe(sq->pipes);
00577
00578
00579 (void) rpmswEnter(&sq->op, -1);
00580
00581
00582
00583 while (ret == 0 && sq->reaped != sq->child) {
00584 if (nothreads)
00585
00586 ret = sigpause(SIGCHLD);
00587 else {
00588 xx = sigrelse(SIGCHLD);
00589
00590
00591 if (read(sq->pipes[0], &xx, sizeof(xx)) == 0) {
00592 xx = close(sq->pipes[0]); sq->pipes[0] = -1;
00593 ret = 1;
00594 }
00595
00596 xx = sighold(SIGCHLD);
00597 }
00598 }
00599
00600
00601
00602 sq->ms_scriptlets += rpmswExit(&sq->op, -1)/1000;
00603
00604 xx = sigrelse(SIGCHLD);
00605
00606 #ifdef _RPMSQ_DEBUG
00607 if (_rpmsq_debug)
00608 fprintf(stderr, " Wake(%p): %p child %d reaper %d ret %d\n", ME(), sq, (int)sq->child, sq->reaper, ret);
00609 #endif
00610
00611
00612 xx = rpmsqRemove(sq);
00613
00614
00615 xx = rpmsqEnable(-SIGCHLD, NULL);
00616 #ifdef _RPMSQ_DEBUG
00617 if (_rpmsq_debug)
00618 fprintf(stderr, " Disable(%p): %p\n", ME(), sq);
00619 #endif
00620
00621 return ret;
00622 }
00623
00624 pid_t rpmsqWait(rpmsq sq)
00625 {
00626
00627 #ifdef _RPMSQ_DEBUG
00628 if (_rpmsq_debug)
00629 fprintf(stderr, " Wait(%p): %p child %d reaper %d\n", ME(), sq, (int)sq->child, sq->reaper);
00630 #endif
00631
00632 if (sq->reaper) {
00633 (void) rpmsqWaitUnregister(sq);
00634 } else {
00635 pid_t reaped;
00636 int status;
00637 do {
00638 reaped = waitpid(sq->child, &status, 0);
00639 } while (reaped >= 0 && reaped != sq->child);
00640 sq->reaped = reaped;
00641 sq->status = status;
00642 #ifdef _RPMSQ_DEBUG
00643 if (_rpmsq_debug)
00644 fprintf(stderr, " Waitpid(%p): %p child %d reaped %d\n", ME(), sq, (int)sq->child, (int)sq->reaped);
00645 #endif
00646 }
00647
00648 #ifdef _RPMSQ_DEBUG
00649 if (_rpmsq_debug)
00650 fprintf(stderr, " Fini(%p): %p child %d status 0x%x\n", ME(), sq, (int)sq->child, sq->status);
00651 #endif
00652
00653 return sq->reaped;
00654 }
00655
00656 void * rpmsqThread(void * (*start) (void * arg), void * arg)
00657 {
00658 #if defined(WITH_PTHREADS)
00659 pthread_t pth;
00660 int ret;
00661
00662 ret = pthread_create(&pth, NULL, start, arg);
00663 return (ret == 0 ? (void *)pth : NULL);
00664 #else
00665 (void) start;
00666 (void) arg;
00667 return NULL;
00668 #endif
00669 }
00670
00671 int rpmsqJoin(void * thread)
00672 {
00673 #if defined(WITH_PTHREADS)
00674 pthread_t pth = (pthread_t) thread;
00675 if (thread == NULL)
00676 return EINVAL;
00677 return pthread_join(pth, NULL);
00678 #else
00679 (void) thread;
00680 return EINVAL;
00681 #endif
00682 }
00683
00684 int rpmsqThreadEqual(void * thread)
00685 {
00686 #if defined(WITH_PTHREADS)
00687 pthread_t t1 = (pthread_t) thread;
00688 pthread_t t2 = pthread_self();
00689 return pthread_equal(t1, t2);
00690 #else
00691 (void) thread;
00692 return 0;
00693 #endif
00694 }
00695
00699 #if defined(WITH_PTHREADS)
00700 static void
00701 sigchld_cancel (void *arg)
00702
00703
00704 {
00705 pid_t child = *(pid_t *) arg;
00706 pid_t result;
00707 int xx;
00708
00709 xx = kill(child, SIGKILL);
00710
00711 do {
00712 result = waitpid(child, NULL, 0);
00713 } while (result == (pid_t)-1 && errno == EINTR);
00714
00715 xx = DO_LOCK ();
00716 if (SUB_REF (rpmsigTbl_sigchld) == 0) {
00717 xx = rpmsqEnable(-SIGQUIT, NULL);
00718 xx = rpmsqEnable(-SIGINT, NULL);
00719 }
00720 xx = DO_UNLOCK ();
00721 }
00722 #endif
00723
00727 int
00728 rpmsqExecve (const char ** argv)
00729
00730
00731 {
00732 #if defined(WITH_PTHREADS)
00733 int oldtype;
00734 #endif
00735 int status = -1;
00736 pid_t pid = 0;
00737 pid_t result;
00738 sigset_t newMask, oldMask;
00739 rpmsq sq = memset(alloca(sizeof(*sq)), 0, sizeof(*sq));
00740 int xx;
00741
00742 #ifndef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
00743 INIT_LOCK ();
00744 #endif
00745
00746 xx = DO_LOCK ();
00747 if (ADD_REF (rpmsigTbl_sigchld) == 0) {
00748 if (rpmsqEnable(SIGINT, NULL) < 0) {
00749 xx = SUB_REF (rpmsigTbl_sigchld);
00750 goto out;
00751 }
00752 if (rpmsqEnable(SIGQUIT, NULL) < 0) {
00753 xx = SUB_REF (rpmsigTbl_sigchld);
00754 goto out_restore_sigint;
00755 }
00756 }
00757 xx = DO_UNLOCK ();
00758
00759 (void) sigemptyset (&newMask);
00760 (void) sigaddset (&newMask, SIGCHLD);
00761 if (sigprocmask (SIG_BLOCK, &newMask, &oldMask) < 0) {
00762 xx = DO_LOCK ();
00763 if (SUB_REF (rpmsigTbl_sigchld) == 0)
00764 goto out_restore_sigquit_and_sigint;
00765 goto out;
00766 }
00767
00768
00769 CLEANUP_HANDLER(sigchld_cancel, &pid, &oldtype);
00770
00771
00772 pid = fork ();
00773 if (pid < (pid_t) 0) {
00774 goto out;
00775 } else if (pid == (pid_t) 0) {
00776
00777
00778 (void) sigaction (SIGINT, &rpmsigTbl_sigint->oact, NULL);
00779 (void) sigaction (SIGQUIT, &rpmsigTbl_sigquit->oact, NULL);
00780 (void) sigprocmask (SIG_SETMASK, &oldMask, NULL);
00781
00782
00783 INIT_LOCK ();
00784
00785 (void) execve (argv[0], (char *const *) argv, environ);
00786 _exit (127);
00787 } else {
00788 do {
00789 result = waitpid(pid, &status, 0);
00790 } while (result == (pid_t)-1 && errno == EINTR);
00791 if (result != pid)
00792 status = -1;
00793 }
00794
00795 CLEANUP_RESET(0, oldtype);
00796
00797 xx = DO_LOCK ();
00798 if ((SUB_REF (rpmsigTbl_sigchld) == 0 &&
00799 (rpmsqEnable(-SIGINT, NULL) < 0 || rpmsqEnable (-SIGQUIT, NULL) < 0))
00800 || sigprocmask (SIG_SETMASK, &oldMask, NULL) != 0)
00801 {
00802 status = -1;
00803 }
00804 goto out;
00805
00806 out_restore_sigquit_and_sigint:
00807 xx = rpmsqEnable(-SIGQUIT, NULL);
00808 out_restore_sigint:
00809 xx = rpmsqEnable(-SIGINT, NULL);
00810 out:
00811 xx = DO_UNLOCK ();
00812 return status;
00813 }