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syscall wait4: add _WALL (POSTK_DEBUG_ARCH_DEP_44)

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Needed by strace -f
This commit is contained in:
Dominique Martinet
2018-04-11 17:54:17 +09:00
parent 90a34f54c9
commit c52f7a5b49
2 changed files with 2 additions and 21 deletions
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2
kernel/include/process.h
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@ -142,9 +142,7 @@
#define WCONTINUED 0x00000008
#define WNOWAIT 0x01000000 /* Don't reap, just poll status. */
#ifdef POSTK_DEBUG_ARCH_DEP_44 /* wait() add support __WALL */
#define __WALL 0x40000000 /* Wait on all children, regardless of type */
#endif /* POSTK_DEBUG_ARCH_DEP_44 */
#define __WCLONE 0x80000000
/* idtype */

21
kernel/syscall.c
View File

@ -669,21 +669,12 @@ do_wait(int pid, int *status, int options, void *rusage)
mcs_rwlock_writer_lock_noirq(&thread->proc->children_lock, &lock);
list_for_each_entry_safe(child, next, &proc->children_list, siblings_list) {
#ifdef POSTK_DEBUG_ARCH_DEP_44 /* wait() add support __WALL */
/*
if (!(options & __WALL)) {
if (!(!!(options & __WCLONE) ^ (child->termsig == SIGCHLD))) {
continue;
}
}
*/
#else /* POSTK_DEBUG_ARCH_DEP_44 */
/*
if (!(!!(options & __WCLONE) ^ (child->termsig == SIGCHLD))) {
if (!(options & __WALL) &&
!(!!(options & __WCLONE) ^ (child->termsig == SIGCHLD))) {
continue;
}
*/
#endif /* POSTK_DEBUG_ARCH_DEP_44 */
/* Find thread with pid == tid, this will be either the main thread
* or the one we are looking for specifically when __WCLONE is passed */
@ -882,11 +873,7 @@ SYSCALL_DECLARE(wait4)
int rc;
struct rusage usage;
#ifdef POSTK_DEBUG_ARCH_DEP_44 /* wait() add support __WALL */
if(options & ~(WNOHANG | WUNTRACED | WCONTINUED | __WCLONE | __WALL)){
#else /* POSTK_DEBUG_ARCH_DEP_44 */
if(options & ~(WNOHANG | WUNTRACED | WCONTINUED | __WCLONE)){
#endif /* POSTK_DEBUG_ARCH_DEP_44 */
dkprintf("wait4: unexpected options(%x).\n", options);
return -EINVAL;
}
@ -918,11 +905,7 @@ SYSCALL_DECLARE(waitid)
pid = -1;
else
return -EINVAL;
#ifdef POSTK_DEBUG_ARCH_DEP_44 /* wait() add support __WALL */
if(options & ~(WEXITED | WSTOPPED | WCONTINUED | WNOHANG | WNOWAIT | __WCLONE | __WALL)){
#else /* POSTK_DEBUG_ARCH_DEP_44 */
if(options & ~(WEXITED | WSTOPPED | WCONTINUED | WNOHANG | WNOWAIT | __WCLONE)){
#endif /* POSTK_DEBUG_ARCH_DEP_44 */
dkprintf("wait4: unexpected options(%x).\n", options);
dkprintf("waitid: unexpected options(%x).\n", options);
return -EINVAL;