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Make system() and popen() thread safe

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This commit is contained in:
Justine Tunney 2022-10-13 15:38:31 -07:00
parent 997ce29ddc
commit f52f65b2e3
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GPG key ID: BE714B4575D6E328
19 changed files with 135 additions and 31 deletions
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6
libc/calls/__sig2.c
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@ -66,7 +66,7 @@ static inline textwindows int __sig_is_masked(int sig) {
}
textwindows int __sig_is_applicable(struct Signal *s) {
return (s->tid <= 0 || s->tid == gettid()) && !__sig_is_masked(s->sig);
return s->tid <= 0 || s->tid == gettid();
}
/**
@ -74,13 +74,11 @@ textwindows int __sig_is_applicable(struct Signal *s) {
* @return signal or null if empty or none unmasked
*/
static textwindows struct Signal *__sig_remove(void) {
int tid;
struct Signal *prev, *res;
if (__sig.queue) {
tid = gettid();
__sig_lock();
for (prev = 0, res = __sig.queue; res; prev = res, res = res->next) {
if (__sig_is_applicable(res)) {
if (__sig_is_applicable(res) && !__sig_is_masked(res->sig)) {
if (res == __sig.queue) {
__sig.queue = res->next;
} else if (prev) {