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LibC: Mark a bunch of functions as cancellation points

This commit is contained in:
Tim Schumacher 2022-06-12 15:15:09 +02:00 committed by Brian Gianforcaro
parent 899fd74f8e
commit c85f307e62
15 changed files with 78 additions and 0 deletions

View file

@ -5,6 +5,7 @@
*/
#include <AK/Format.h>
#include <bits/pthread_cancel.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
@ -110,6 +111,8 @@ int munlock(void const*, size_t)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/msync.html
int msync(void* address, size_t size, int flags)
{
__pthread_maybe_cancel();
int rc = syscall(SC_msync, address, size, flags);
__RETURN_WITH_ERRNO(rc, rc, -1);
}

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@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <bits/pthread_cancel.h>
#include <errno.h>
#include <stdio.h>
#include <sys/poll.h>
@ -18,6 +19,8 @@ extern "C" {
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/select.html
int select(int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, timeval* timeout_tv)
{
__pthread_maybe_cancel();
timespec* timeout_ts = nullptr;
timespec timeout;
if (timeout_tv) {
@ -30,6 +33,8 @@ int select(int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, timev
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/pselect.html
int pselect(int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, timespec const* timeout, sigset_t const* sigmask)
{
__pthread_maybe_cancel();
Vector<pollfd, FD_SETSIZE> fds;
if (nfds < 0 || static_cast<size_t>(nfds) >= fds.capacity())

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@ -5,6 +5,7 @@
*/
#include <AK/Assertions.h>
#include <bits/pthread_cancel.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
@ -38,6 +39,8 @@ int listen(int sockfd, int backlog)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/accept.html
int accept(int sockfd, sockaddr* addr, socklen_t* addrlen)
{
__pthread_maybe_cancel();
return accept4(sockfd, addr, addrlen, 0);
}
@ -51,6 +54,8 @@ int accept4(int sockfd, sockaddr* addr, socklen_t* addrlen, int flags)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/connect.html
int connect(int sockfd, sockaddr const* addr, socklen_t addrlen)
{
__pthread_maybe_cancel();
int rc = syscall(SC_connect, sockfd, addr, addrlen);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
@ -65,6 +70,8 @@ int shutdown(int sockfd, int how)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/sendmsg.html
ssize_t sendmsg(int sockfd, const struct msghdr* msg, int flags)
{
__pthread_maybe_cancel();
int rc = syscall(SC_sendmsg, sockfd, msg, flags);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
@ -86,6 +93,8 @@ ssize_t send(int sockfd, void const* data, size_t data_length, int flags)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/recvmsg.html
ssize_t recvmsg(int sockfd, struct msghdr* msg, int flags)
{
__pthread_maybe_cancel();
int rc = syscall(SC_recvmsg, sockfd, msg, flags);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
@ -93,6 +102,8 @@ ssize_t recvmsg(int sockfd, struct msghdr* msg, int flags)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/recvfrom.html
ssize_t recvfrom(int sockfd, void* buffer, size_t buffer_length, int flags, struct sockaddr* addr, socklen_t* addr_length)
{
__pthread_maybe_cancel();
if (!addr_length && addr) {
errno = EINVAL;
return -1;

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@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <bits/pthread_cancel.h>
#include <errno.h>
#include <sys/uio.h>
#include <syscall.h>
@ -12,12 +13,16 @@ extern "C" {
ssize_t writev(int fd, const struct iovec* iov, int iov_count)
{
__pthread_maybe_cancel();
int rc = syscall(SC_writev, fd, iov, iov_count);
__RETURN_WITH_ERRNO(rc, rc, -1);
}
ssize_t readv(int fd, const struct iovec* iov, int iov_count)
{
__pthread_maybe_cancel();
int rc = syscall(SC_readv, fd, iov, iov_count);
__RETURN_WITH_ERRNO(rc, rc, -1);
}

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@ -5,6 +5,7 @@
*/
#include <assert.h>
#include <bits/pthread_cancel.h>
#include <errno.h>
#include <sys/wait.h>
#include <syscall.h>
@ -21,6 +22,8 @@ pid_t wait(int* wstatus)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/waitpid.html
pid_t waitpid(pid_t waitee, int* wstatus, int options)
{
__pthread_maybe_cancel();
siginfo_t siginfo;
idtype_t idtype;
id_t id;
@ -78,6 +81,8 @@ pid_t waitpid(pid_t waitee, int* wstatus, int options)
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/waitid.html
int waitid(idtype_t idtype, id_t id, siginfo_t* infop, int options)
{
__pthread_maybe_cancel();
Syscall::SC_waitid_params params { idtype, id, infop, options };
int rc = syscall(SC_waitid, &params);
__RETURN_WITH_ERRNO(rc, rc, -1);