Merge tag 'misc-pull-request' of gitlab.com:marcandre.lureau/qemu into staging

Misc cleanups

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# gpg: Signature made Tue 03 May 2022 06:12:20 AM PDT
# gpg:                using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg:                issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]

* tag 'misc-pull-request' of gitlab.com:marcandre.lureau/qemu: (23 commits)
  util: rename qemu_*block() socket functions
  tests: replace qemu_set_nonblock()
  net: replace qemu_set_nonblock()
  ui: replace qemu_set_nonblock()
  hw: replace qemu_set_nonblock()
  qga: replace qemu_set_nonblock()
  io: replace qemu_set{_non}block()
  chardev: replace qemu_set_nonblock()
  io: make qio_channel_command_new_pid() static
  Replace fcntl(O_NONBLOCK) with g_unix_set_fd_nonblocking()
  io: replace pipe() with g_unix_open_pipe(CLOEXEC)
  virtiofsd: replace pipe() with g_unix_open_pipe(CLOEXEC)
  os-posix: replace pipe()+cloexec with g_unix_open_pipe(CLOEXEC)
  tests: replace pipe() with g_unix_open_pipe(CLOEXEC)
  qga: replace pipe() with g_unix_open_pipe(CLOEXEC)
  util: replace pipe()+cloexec with g_unix_open_pipe()
  Replace qemu_pipe() with g_unix_open_pipe()
  block: move fcntl_setfl()
  Use g_unix_set_fd_nonblocking()
  libqtest: split QMP part in libqmp
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

7 files changed, 18 insertions, 72 deletions

diff --git a/util/compatfd.c b/util/compatfd.c
index 55b6e0b..147e39e 100644
--- a/util/compatfd.c
+++ b/util/compatfd.c
@@ -60,14 +60,11 @@ static int qemu_signalfd_compat(const sigset_t *mask)
 
     info = g_malloc(sizeof(*info));
 
-    if (pipe(fds) == -1) {
+    if (!g_unix_open_pipe(fds, FD_CLOEXEC, NULL)) {
         g_free(info);
         return -1;
     }
 
-    qemu_set_cloexec(fds[0]);
-    qemu_set_cloexec(fds[1]);
-
     memcpy(&info->mask, mask, sizeof(*mask));
     info->fd = fds[1];
 
diff --git a/util/coroutine-ucontext.c b/util/coroutine-ucontext.c
index 904b375..ed368e1 100644
--- a/util/coroutine-ucontext.c
+++ b/util/coroutine-ucontext.c
@@ -30,7 +30,7 @@
 #include <valgrind/valgrind.h>
 #endif
 
-#if defined(__SANITIZE_ADDRESS__) || __has_feature(address_sanitizer)
+#ifdef QEMU_SANITIZE_ADDRESS
 #ifdef CONFIG_ASAN_IFACE_FIBER
 #define CONFIG_ASAN 1
 #include <sanitizer/asan_interface.h>
diff --git a/util/event_notifier-posix.c b/util/event_notifier-posix.c
index 8dc30c5..76420c5 100644
--- a/util/event_notifier-posix.c
+++ b/util/event_notifier-posix.c
@@ -49,16 +49,14 @@ int event_notifier_init(EventNotifier *e, int active)
         if (errno != ENOSYS) {
             return -errno;
         }
-        if (qemu_pipe(fds) < 0) {
+        if (!g_unix_open_pipe(fds, FD_CLOEXEC, NULL)) {
             return -errno;
         }
-        ret = fcntl_setfl(fds[0], O_NONBLOCK);
-        if (ret < 0) {
+        if (!g_unix_set_fd_nonblocking(fds[0], true, NULL)) {
             ret = -errno;
             goto fail;
         }
-        ret = fcntl_setfl(fds[1], O_NONBLOCK);
-        if (ret < 0) {
+        if (!g_unix_set_fd_nonblocking(fds[1], true, NULL)) {
             ret = -errno;
             goto fail;
         }
diff --git a/util/main-loop.c b/util/main-loop.c
index b7b0ce4..9afac10 100644
--- a/util/main-loop.c
+++ b/util/main-loop.c
@@ -114,7 +114,7 @@ static int qemu_signal_init(Error **errp)
         return -errno;
     }
 
-    fcntl_setfl(sigfd, O_NONBLOCK);
+    g_unix_set_fd_nonblocking(sigfd, true, NULL);
 
     qemu_set_fd_handler(sigfd, sigfd_handler, NULL, (void *)(intptr_t)sigfd);
 
diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index b8bf7d4..477990f 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -224,32 +224,20 @@ void qemu_anon_ram_free(void *ptr, size_t size)
     qemu_ram_munmap(-1, ptr, size);
 }
 
-void qemu_set_block(int fd)
+void qemu_socket_set_block(int fd)
 {
-    int f;
-    f = fcntl(fd, F_GETFL);
-    assert(f != -1);
-    f = fcntl(fd, F_SETFL, f & ~O_NONBLOCK);
-    assert(f != -1);
+    g_unix_set_fd_nonblocking(fd, false, NULL);
 }
 
-int qemu_try_set_nonblock(int fd)
+int qemu_socket_try_set_nonblock(int fd)
 {
-    int f;
-    f = fcntl(fd, F_GETFL);
-    if (f == -1) {
-        return -errno;
-    }
-    if (fcntl(fd, F_SETFL, f | O_NONBLOCK) == -1) {
-        return -errno;
-    }
-    return 0;
+    return g_unix_set_fd_nonblocking(fd, true, NULL) ? 0 : -errno;
 }
 
-void qemu_set_nonblock(int fd)
+void qemu_socket_set_nonblock(int fd)
 {
     int f;
-    f = qemu_try_set_nonblock(fd);
+    f = qemu_socket_try_set_nonblock(fd);
     assert(f == 0);
 }
 
@@ -274,28 +262,6 @@ void qemu_set_cloexec(int fd)
     assert(f != -1);
 }
 
-/*
- * Creates a pipe with FD_CLOEXEC set on both file descriptors
- */
-int qemu_pipe(int pipefd[2])
-{
-    int ret;
-
-#ifdef CONFIG_PIPE2
-    ret = pipe2(pipefd, O_CLOEXEC);
-    if (ret != -1 || errno != ENOSYS) {
-        return ret;
-    }
-#endif
-    ret = pipe(pipefd);
-    if (ret == 0) {
-        qemu_set_cloexec(pipefd[0]);
-        qemu_set_cloexec(pipefd[1]);
-    }
-
-    return ret;
-}
-
 char *
 qemu_get_local_state_dir(void)
 {
@@ -897,21 +863,6 @@ size_t qemu_get_host_physmem(void)
     return 0;
 }
 
-/* Sets a specific flag */
-int fcntl_setfl(int fd, int flag)
-{
-    int flags;
-
-    flags = fcntl(fd, F_GETFL);
-    if (flags == -1) {
-        return -errno;
-    }
-    if (fcntl(fd, F_SETFL, flags | flag) == -1) {
-        return -errno;
-    }
-    return 0;
-}
-
 int qemu_msync(void *addr, size_t length, int fd)
 {
     size_t align_mask = ~(qemu_real_host_page_size() - 1);
diff --git a/util/oslib-win32.c b/util/oslib-win32.c
index 9c1e812..dafef4f 100644
--- a/util/oslib-win32.c
+++ b/util/oslib-win32.c
@@ -184,14 +184,14 @@ static int socket_error(void)
     }
 }
 
-void qemu_set_block(int fd)
+void qemu_socket_set_block(int fd)
 {
     unsigned long opt = 0;
     WSAEventSelect(fd, NULL, 0);
     ioctlsocket(fd, FIONBIO, &opt);
 }
 
-int qemu_try_set_nonblock(int fd)
+int qemu_socket_try_set_nonblock(int fd)
 {
     unsigned long opt = 1;
     if (ioctlsocket(fd, FIONBIO, &opt) != NO_ERROR) {
@@ -200,9 +200,9 @@ int qemu_try_set_nonblock(int fd)
     return 0;
 }
 
-void qemu_set_nonblock(int fd)
+void qemu_socket_set_nonblock(int fd)
 {
-    (void)qemu_try_set_nonblock(fd);
+    (void)qemu_socket_try_set_nonblock(fd);
 }
 
 int socket_set_fast_reuse(int fd)
diff --git a/util/vhost-user-server.c b/util/vhost-user-server.c
index f66fbba..232984a 100644
--- a/util/vhost-user-server.c
+++ b/util/vhost-user-server.c
@@ -65,7 +65,7 @@ static void vmsg_unblock_fds(VhostUserMsg *vmsg)
 {
     int i;
     for (i = 0; i < vmsg->fd_num; i++) {
-        qemu_set_nonblock(vmsg->fds[i]);
+        qemu_socket_set_nonblock(vmsg->fds[i]);
     }
 }
 
@@ -270,7 +270,7 @@ set_watch(VuDev *vu_dev, int fd, int vu_evt,
 
         vu_fd_watch->fd = fd;
         vu_fd_watch->cb = cb;
-        qemu_set_nonblock(fd);
+        qemu_socket_set_nonblock(fd);
         aio_set_fd_handler(server->ioc->ctx, fd, true, kick_handler,
                            NULL, NULL, NULL, vu_fd_watch);
         vu_fd_watch->vu_dev = vu_dev;