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Add more apis to redbean unix module

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- Document unix.fcntl()
- Add POSIX Advisory Locks
- Add mask parameter to unix.poll()
- Add lowest parameter to unix.dup()
This commit is contained in:
Justine Tunney 2022-08-16 23:23:34 -07:00
parent ce588dd56b
commit a1aaf23dc1
16 changed files with 432 additions and 102 deletions
Download patch file Download diff file Expand all files Collapse all files

35
libc/calls/poll-nt.c
View file

@ -61,17 +61,22 @@ textwindows int sys_poll_nt(struct pollfd *fds, uint64_t nfds, uint64_t *ms,
struct sys_pollfd_nt sockfds[64];
int pipeindices[ARRAYLEN(pipefds)];
int sockindices[ARRAYLEN(sockfds)];
int i, sn, pn, failed, gotinvals, gotpipes, gotsocks, waitfor;
int i, rc, sn, pn, gotinvals, gotpipes, gotsocks, waitfor;
// check for interrupts early before doing work
if (sigmask && __sig_mask(SIG_SETMASK, sigmask, &oldmask)) return -1;
if (_check_interrupts(false, g_fds.p)) return eintr();
if (sigmask) {
__sig_mask(SIG_SETMASK, sigmask, &oldmask);
}
if (_check_interrupts(false, g_fds.p)) {
rc = eintr();
goto ReturnPath;
}
// do the planning
// we need to read static variables
// we might need to spawn threads and open pipes
__fds_lock();
for (gotinvals = failed = sn = pn = i = 0; i < nfds; ++i) {
for (gotinvals = rc = sn = pn = i = 0; i < nfds; ++i) {
if (fds[i].fd < 0) continue;
if (__isfdopen(fds[i].fd)) {
if (__isfdkind(fds[i].fd, kFdSocket)) {
@ -85,7 +90,7 @@ textwindows int sys_poll_nt(struct pollfd *fds, uint64_t nfds, uint64_t *ms,
++sn;
} else {
// too many socket fds
failed = enomem();
rc = enomem();
break;
}
} else if (pn < ARRAYLEN(pipefds)) {
@ -109,7 +114,7 @@ textwindows int sys_poll_nt(struct pollfd *fds, uint64_t nfds, uint64_t *ms,
++pn;
} else {
// too many non-socket fds
failed = enomem();
rc = enomem();
break;
}
} else {
@ -117,9 +122,9 @@ textwindows int sys_poll_nt(struct pollfd *fds, uint64_t nfds, uint64_t *ms,
}
}
__fds_unlock();
if (failed) {
if (rc) {
// failed to create a polling solution
return failed;
goto ReturnPath;
}
// perform the i/o and sleeping and looping
@ -164,7 +169,8 @@ textwindows int sys_poll_nt(struct pollfd *fds, uint64_t nfds, uint64_t *ms,
POLLTRACE("WSAPoll(%p, %u, %'d) out of %'lu", sockfds, sn, waitfor, *ms);
#endif
if ((gotsocks = WSAPoll(sockfds, sn, waitfor)) == -1) {
return __winsockerr();
rc = __winsockerr();
goto ReturnPath;
}
*ms -= waitfor;
} else {
@ -188,7 +194,8 @@ textwindows int sys_poll_nt(struct pollfd *fds, uint64_t nfds, uint64_t *ms,
// otherwise loop limitlessly for timeout to elapse while
// checking for signal delivery interrupts, along the way
if (_check_interrupts(false, g_fds.p)) {
return eintr();
rc = eintr();
goto ReturnPath;
}
}
@ -209,5 +216,11 @@ textwindows int sys_poll_nt(struct pollfd *fds, uint64_t nfds, uint64_t *ms,
}
// and finally return
return gotinvals + gotpipes + gotsocks;
rc = gotinvals + gotpipes + gotsocks;
ReturnPath:
if (sigmask) {
__sig_mask(SIG_SETMASK, &oldmask, 0);
}
return rc;
}