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- Polyfill pselect() on Windows
- Add -O NOFILE flag to pledge.com
- Polyfill ppoll() on NetBSD, XNU, and Windows
- Support negative numbers and errno in sizetol()
- Add .RSS, .NOFILE, and .MAXCORE to Landlock Make
- Fix issue with .PLEDGE preventing touching of output files
- Add __watch() function (like ftrace) for logging memory changes
This commit is contained in:
Justine Tunney 2022-08-15 15:18:37 -07:00
parent d3b599a796
commit f0701d2a24
35 changed files with 635 additions and 340 deletions
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33
libc/sock/pselect.c
View file

@ -18,9 +18,13 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/strace.internal.h"
#include "libc/calls/struct/timespec.h"
#include "libc/calls/struct/timeval.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/sock/internal.h"
#include "libc/sock/select.h"
#include "libc/sysv/errfuns.h"
/**
* Does what poll() does except with bitset API.
@ -32,9 +36,30 @@ int pselect(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
const struct timespec *timeout, const sigset_t *sigmask) {
int rc;
sigset_t oldmask;
rc = sys_pselect(nfds, readfds, writefds, exceptfds, timeout, sigmask);
POLLTRACE("pselect(%d, %p, %p, %p, [%s], %s) → %d% m", nfds, readfds,
writefds, exceptfds, DescribeTimeval(rc, timeout),
DescribeSigset(0, sigmask), rc);
struct timeval tv, *tvp;
if (nfds < 0) {
rc = einval();
} else if (IsAsan() &&
((readfds && !__asan_is_valid(readfds, FD_SIZE(nfds))) ||
(writefds && !__asan_is_valid(writefds, FD_SIZE(nfds))) ||
(exceptfds && !__asan_is_valid(exceptfds, FD_SIZE(nfds))) ||
(timeout && !__asan_is_valid(timeout, sizeof(*timeout))) ||
(sigmask && !__asan_is_valid(sigmask, sizeof(*sigmask))))) {
rc = efault();
} else if (!IsWindows()) {
rc = sys_pselect(nfds, readfds, writefds, exceptfds, timeout, sigmask);
} else {
if (timeout) {
tv.tv_sec = timeout->tv_sec;
tv.tv_usec = timeout->tv_nsec / 1000;
tvp = &tv;
} else {
tvp = 0;
}
rc = sys_select_nt(nfds, readfds, writefds, exceptfds, tvp, sigmask);
}
POLLTRACE("pselect(%d, %p, %p, %p, %s, %s) → %d% m", nfds, readfds, writefds,
exceptfds, DescribeTimeval(0, timeout), DescribeSigset(0, sigmask),
rc);
return rc;
}