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Polish recent changes and make improvements

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- Simulate SIGPIPE on Windows NT
- Fix commandv() regression on Windows NT
- Fix sigprocmask() strace bug on OpenBSD
- Add many more system calls to --strace logging
- Make errno state more pristine in redbean strace
This commit is contained in:
Justine Tunney 2022-03-19 03:37:00 -07:00
parent 10a766ebd0
commit 39688a73e4
69 changed files with 460 additions and 1976 deletions
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34
libc/stdio/spawn.c
View file

@ -45,7 +45,7 @@ int posix_spawn(int *pid, const char *path,
if (!(*pid = vfork())) {
if (attrp) {
if (attrp->posix_attr_flags & POSIX_SPAWN_SETPGROUP) {
if (setpgid(0, attrp->posix_attr_pgroup)) _exit(127);
if (setpgid(0, attrp->posix_attr_pgroup)) _Exit(127);
}
if (attrp->posix_attr_flags & POSIX_SPAWN_SETSIGMASK) {
sigprocmask(SIG_SETMASK, &attrp->posix_attr_sigmask, NULL);
@ -60,7 +60,7 @@ int posix_spawn(int *pid, const char *path,
sigfillset(&allsigs);
for (s = 0; sigismember(&allsigs, s); s++) {
if (sigismember(&attrp->posix_attr_sigdefault, s)) {
if (sigaction(s, &dfl, NULL) == -1) _exit(127);
if (sigaction(s, &dfl, NULL) == -1) _Exit(127);
}
}
}
@ -68,28 +68,28 @@ int posix_spawn(int *pid, const char *path,
if (file_actions) {
for (p = *file_actions; *p; p = strchr(p, ')') + 1) {
if (!strncmp(p, "close(", 6)) {
if (sscanf(p + 6, "%d)", &fd) != 1) _exit(127);
if (close(fd) == -1) _exit(127);
if (sscanf(p + 6, "%d)", &fd) != 1) _Exit(127);
if (close(fd) == -1) _Exit(127);
} else if (!strncmp(p, "dup2(", 5)) {
if (sscanf(p + 5, "%d,%d)", &fd, &newfd) != 2) _exit(127);
if (dup2(fd, newfd) == -1) _exit(127);
if (sscanf(p + 5, "%d,%d)", &fd, &newfd) != 2) _Exit(127);
if (dup2(fd, newfd) == -1) _Exit(127);
} else if (!strncmp(p, "open(", 5)) {
if (sscanf(p + 5, "%d,", &fd) != 1) _exit(127);
if (sscanf(p + 5, "%d,", &fd) != 1) _Exit(127);
p = strchr(p, ',') + 1;
q = strchr(p, '*');
if (!q || q - p + 1 > PATH_MAX) _exit(127);
if (!q || q - p + 1 > PATH_MAX) _Exit(127);
strncpy(opath, p, q - p);
opath[q - p] = '\0';
if (sscanf(q + 1, "%o,%o)", &oflag, &mode) != 2) _exit(127);
if (close(fd) == -1 && errno != EBADF) _exit(127);
if (sscanf(q + 1, "%o,%o)", &oflag, &mode) != 2) _Exit(127);
if (close(fd) == -1 && errno != EBADF) _Exit(127);
tempfd = open(opath, oflag, mode);
if (tempfd == -1) _exit(127);
if (tempfd == -1) _Exit(127);
if (tempfd != fd) {
if (dup2(tempfd, fd) == -1) _exit(127);
if (close(tempfd) == -1) _exit(127);
if (dup2(tempfd, fd) == -1) _Exit(127);
if (close(tempfd) == -1) _Exit(127);
}
} else {
_exit(127);
_Exit(127);
}
}
}
@ -97,17 +97,17 @@ int posix_spawn(int *pid, const char *path,
if (attrp->posix_attr_flags & POSIX_SPAWN_SETSCHEDULER) {
if (sched_setscheduler(0, attrp->posix_attr_schedpolicy,
&attrp->posix_attr_schedparam) == -1) {
_exit(127);
_Exit(127);
}
}
if (attrp->posix_attr_flags & POSIX_SPAWN_SETSCHEDPARAM) {
if (sched_setparam(0, &attrp->posix_attr_schedparam) == -1) {
_exit(127);
_Exit(127);
}
}
}
execve(path, argv, envp);
_exit(127);
_Exit(127);
} else {
if (*pid == -1) return errno;
return 0;