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Diffstat (limited to '3rdparty/libuv/src/unix/process.c')
-rw-r--r--3rdparty/libuv/src/unix/process.c563
1 files changed, 0 insertions, 563 deletions
diff --git a/3rdparty/libuv/src/unix/process.c b/3rdparty/libuv/src/unix/process.c
deleted file mode 100644
index ef10a3422dc..00000000000
--- a/3rdparty/libuv/src/unix/process.c
+++ /dev/null
@@ -1,563 +0,0 @@
-/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#include "uv.h"
-#include "internal.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <errno.h>
-
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <poll.h>
-
-#if defined(__APPLE__) && !TARGET_OS_IPHONE
-# include <crt_externs.h>
-# define environ (*_NSGetEnviron())
-#else
-extern char **environ;
-#endif
-
-#ifdef __linux__
-# include <grp.h>
-#endif
-
-
-static void uv__chld(uv_signal_t* handle, int signum) {
- uv_process_t* process;
- uv_loop_t* loop;
- int exit_status;
- int term_signal;
- int status;
- pid_t pid;
- QUEUE pending;
- QUEUE* q;
- QUEUE* h;
-
- assert(signum == SIGCHLD);
-
- QUEUE_INIT(&pending);
- loop = handle->loop;
-
- h = &loop->process_handles;
- q = QUEUE_HEAD(h);
- while (q != h) {
- process = QUEUE_DATA(q, uv_process_t, queue);
- q = QUEUE_NEXT(q);
-
- do
- pid = waitpid(process->pid, &status, WNOHANG);
- while (pid == -1 && errno == EINTR);
-
- if (pid == 0)
- continue;
-
- if (pid == -1) {
- if (errno != ECHILD)
- abort();
- continue;
- }
-
- process->status = status;
- QUEUE_REMOVE(&process->queue);
- QUEUE_INSERT_TAIL(&pending, &process->queue);
- }
-
- h = &pending;
- q = QUEUE_HEAD(h);
- while (q != h) {
- process = QUEUE_DATA(q, uv_process_t, queue);
- q = QUEUE_NEXT(q);
-
- QUEUE_REMOVE(&process->queue);
- QUEUE_INIT(&process->queue);
- uv__handle_stop(process);
-
- if (process->exit_cb == NULL)
- continue;
-
- exit_status = 0;
- if (WIFEXITED(process->status))
- exit_status = WEXITSTATUS(process->status);
-
- term_signal = 0;
- if (WIFSIGNALED(process->status))
- term_signal = WTERMSIG(process->status);
-
- process->exit_cb(process, exit_status, term_signal);
- }
- assert(QUEUE_EMPTY(&pending));
-}
-
-
-int uv__make_socketpair(int fds[2], int flags) {
-#if defined(__linux__)
- static int no_cloexec;
-
- if (no_cloexec)
- goto skip;
-
- if (socketpair(AF_UNIX, SOCK_STREAM | UV__SOCK_CLOEXEC | flags, 0, fds) == 0)
- return 0;
-
- /* Retry on EINVAL, it means SOCK_CLOEXEC is not supported.
- * Anything else is a genuine error.
- */
- if (errno != EINVAL)
- return -errno;
-
- no_cloexec = 1;
-
-skip:
-#endif
-
- if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds))
- return -errno;
-
- uv__cloexec(fds[0], 1);
- uv__cloexec(fds[1], 1);
-
- if (flags & UV__F_NONBLOCK) {
- uv__nonblock(fds[0], 1);
- uv__nonblock(fds[1], 1);
- }
-
- return 0;
-}
-
-
-int uv__make_pipe(int fds[2], int flags) {
-#if defined(__linux__)
- static int no_pipe2;
-
- if (no_pipe2)
- goto skip;
-
- if (uv__pipe2(fds, flags | UV__O_CLOEXEC) == 0)
- return 0;
-
- if (errno != ENOSYS)
- return -errno;
-
- no_pipe2 = 1;
-
-skip:
-#endif
-
- if (pipe(fds))
- return -errno;
-
- uv__cloexec(fds[0], 1);
- uv__cloexec(fds[1], 1);
-
- if (flags & UV__F_NONBLOCK) {
- uv__nonblock(fds[0], 1);
- uv__nonblock(fds[1], 1);
- }
-
- return 0;
-}
-
-
-/*
- * Used for initializing stdio streams like options.stdin_stream. Returns
- * zero on success. See also the cleanup section in uv_spawn().
- */
-static int uv__process_init_stdio(uv_stdio_container_t* container, int fds[2]) {
- int mask;
- int fd;
-
- mask = UV_IGNORE | UV_CREATE_PIPE | UV_INHERIT_FD | UV_INHERIT_STREAM;
-
- switch (container->flags & mask) {
- case UV_IGNORE:
- return 0;
-
- case UV_CREATE_PIPE:
- assert(container->data.stream != NULL);
- if (container->data.stream->type != UV_NAMED_PIPE)
- return -EINVAL;
- else
- return uv__make_socketpair(fds, 0);
-
- case UV_INHERIT_FD:
- case UV_INHERIT_STREAM:
- if (container->flags & UV_INHERIT_FD)
- fd = container->data.fd;
- else
- fd = uv__stream_fd(container->data.stream);
-
- if (fd == -1)
- return -EINVAL;
-
- fds[1] = fd;
- return 0;
-
- default:
- assert(0 && "Unexpected flags");
- return -EINVAL;
- }
-}
-
-
-static int uv__process_open_stream(uv_stdio_container_t* container,
- int pipefds[2],
- int writable) {
- int flags;
- int err;
-
- if (!(container->flags & UV_CREATE_PIPE) || pipefds[0] < 0)
- return 0;
-
- err = uv__close(pipefds[1]);
- if (err != 0 && err != -EINPROGRESS)
- abort();
-
- pipefds[1] = -1;
- uv__nonblock(pipefds[0], 1);
-
- if (container->data.stream->type == UV_NAMED_PIPE &&
- ((uv_pipe_t*)container->data.stream)->ipc)
- flags = UV_STREAM_READABLE | UV_STREAM_WRITABLE;
- else if (writable)
- flags = UV_STREAM_WRITABLE;
- else
- flags = UV_STREAM_READABLE;
-
- return uv__stream_open(container->data.stream, pipefds[0], flags);
-}
-
-
-static void uv__process_close_stream(uv_stdio_container_t* container) {
- if (!(container->flags & UV_CREATE_PIPE)) return;
- uv__stream_close((uv_stream_t*)container->data.stream);
-}
-
-
-static void uv__write_int(int fd, int val) {
- ssize_t n;
-
- do
- n = write(fd, &val, sizeof(val));
- while (n == -1 && errno == EINTR);
-
- if (n == -1 && errno == EPIPE)
- return; /* parent process has quit */
-
- assert(n == sizeof(val));
-}
-
-
-#if !(defined(__APPLE__) && (TARGET_OS_TV || TARGET_OS_WATCH))
-/* execvp is marked __WATCHOS_PROHIBITED __TVOS_PROHIBITED, so must be
- * avoided. Since this isn't called on those targets, the function
- * doesn't even need to be defined for them.
- */
-static void uv__process_child_init(const uv_process_options_t* options,
- int stdio_count,
- int (*pipes)[2],
- int error_fd) {
- int close_fd;
- int use_fd;
- int fd;
-
- if (options->flags & UV_PROCESS_DETACHED)
- setsid();
-
- /* First duplicate low numbered fds, since it's not safe to duplicate them,
- * they could get replaced. Example: swapping stdout and stderr; without
- * this fd 2 (stderr) would be duplicated into fd 1, thus making both
- * stdout and stderr go to the same fd, which was not the intention. */
- for (fd = 0; fd < stdio_count; fd++) {
- use_fd = pipes[fd][1];
- if (use_fd < 0 || use_fd >= fd)
- continue;
- pipes[fd][1] = fcntl(use_fd, F_DUPFD, stdio_count);
- if (pipes[fd][1] == -1) {
- uv__write_int(error_fd, -errno);
- _exit(127);
- }
- }
-
- for (fd = 0; fd < stdio_count; fd++) {
- close_fd = pipes[fd][0];
- use_fd = pipes[fd][1];
-
- if (use_fd < 0) {
- if (fd >= 3)
- continue;
- else {
- /* redirect stdin, stdout and stderr to /dev/null even if UV_IGNORE is
- * set
- */
- use_fd = open("/dev/null", fd == 0 ? O_RDONLY : O_RDWR);
- close_fd = use_fd;
-
- if (use_fd == -1) {
- uv__write_int(error_fd, -errno);
- _exit(127);
- }
- }
- }
-
- if (fd == use_fd)
- uv__cloexec(use_fd, 0);
- else
- fd = dup2(use_fd, fd);
-
- if (fd == -1) {
- uv__write_int(error_fd, -errno);
- _exit(127);
- }
-
- if (fd <= 2)
- uv__nonblock(fd, 0);
-
- if (close_fd >= stdio_count)
- uv__close(close_fd);
- }
-
- for (fd = 0; fd < stdio_count; fd++) {
- use_fd = pipes[fd][1];
-
- if (use_fd >= stdio_count)
- uv__close(use_fd);
- }
-
- if (options->cwd != NULL && chdir(options->cwd)) {
- uv__write_int(error_fd, -errno);
- _exit(127);
- }
-
- if (options->flags & (UV_PROCESS_SETUID | UV_PROCESS_SETGID)) {
- /* When dropping privileges from root, the `setgroups` call will
- * remove any extraneous groups. If we don't call this, then
- * even though our uid has dropped, we may still have groups
- * that enable us to do super-user things. This will fail if we
- * aren't root, so don't bother checking the return value, this
- * is just done as an optimistic privilege dropping function.
- */
- SAVE_ERRNO(setgroups(0, NULL));
- }
-
- if ((options->flags & UV_PROCESS_SETGID) && setgid(options->gid)) {
- uv__write_int(error_fd, -errno);
- _exit(127);
- }
-
- if ((options->flags & UV_PROCESS_SETUID) && setuid(options->uid)) {
- uv__write_int(error_fd, -errno);
- _exit(127);
- }
-
- if (options->env != NULL) {
- environ = options->env;
- }
-
- execvp(options->file, options->args);
- uv__write_int(error_fd, -errno);
- _exit(127);
-}
-#endif
-
-
-int uv_spawn(uv_loop_t* loop,
- uv_process_t* process,
- const uv_process_options_t* options) {
-#if defined(__APPLE__) && (TARGET_OS_TV || TARGET_OS_WATCH)
- /* fork is marked __WATCHOS_PROHIBITED __TVOS_PROHIBITED. */
- return -ENOSYS;
-#else
- int signal_pipe[2] = { -1, -1 };
- int (*pipes)[2];
- int stdio_count;
- ssize_t r;
- pid_t pid;
- int err;
- int exec_errorno;
- int i;
- int status;
-
- assert(options->file != NULL);
- assert(!(options->flags & ~(UV_PROCESS_DETACHED |
- UV_PROCESS_SETGID |
- UV_PROCESS_SETUID |
- UV_PROCESS_WINDOWS_HIDE |
- UV_PROCESS_WINDOWS_VERBATIM_ARGUMENTS)));
-
- uv__handle_init(loop, (uv_handle_t*)process, UV_PROCESS);
- QUEUE_INIT(&process->queue);
-
- stdio_count = options->stdio_count;
- if (stdio_count < 3)
- stdio_count = 3;
-
- err = -ENOMEM;
- pipes = uv__malloc(stdio_count * sizeof(*pipes));
- if (pipes == NULL)
- goto error;
-
- for (i = 0; i < stdio_count; i++) {
- pipes[i][0] = -1;
- pipes[i][1] = -1;
- }
-
- for (i = 0; i < options->stdio_count; i++) {
- err = uv__process_init_stdio(options->stdio + i, pipes[i]);
- if (err)
- goto error;
- }
-
- /* This pipe is used by the parent to wait until
- * the child has called `execve()`. We need this
- * to avoid the following race condition:
- *
- * if ((pid = fork()) > 0) {
- * kill(pid, SIGTERM);
- * }
- * else if (pid == 0) {
- * execve("/bin/cat", argp, envp);
- * }
- *
- * The parent sends a signal immediately after forking.
- * Since the child may not have called `execve()` yet,
- * there is no telling what process receives the signal,
- * our fork or /bin/cat.
- *
- * To avoid ambiguity, we create a pipe with both ends
- * marked close-on-exec. Then, after the call to `fork()`,
- * the parent polls the read end until it EOFs or errors with EPIPE.
- */
- err = uv__make_pipe(signal_pipe, 0);
- if (err)
- goto error;
-
- uv_signal_start(&loop->child_watcher, uv__chld, SIGCHLD);
-
- /* Acquire write lock to prevent opening new fds in worker threads */
- uv_rwlock_wrlock(&loop->cloexec_lock);
- pid = fork();
-
- if (pid == -1) {
- err = -errno;
- uv_rwlock_wrunlock(&loop->cloexec_lock);
- uv__close(signal_pipe[0]);
- uv__close(signal_pipe[1]);
- goto error;
- }
-
- if (pid == 0) {
- uv__process_child_init(options, stdio_count, pipes, signal_pipe[1]);
- abort();
- }
-
- /* Release lock in parent process */
- uv_rwlock_wrunlock(&loop->cloexec_lock);
- uv__close(signal_pipe[1]);
-
- process->status = 0;
- exec_errorno = 0;
- do
- r = read(signal_pipe[0], &exec_errorno, sizeof(exec_errorno));
- while (r == -1 && errno == EINTR);
-
- if (r == 0)
- ; /* okay, EOF */
- else if (r == sizeof(exec_errorno)) {
- do
- err = waitpid(pid, &status, 0); /* okay, read errorno */
- while (err == -1 && errno == EINTR);
- assert(err == pid);
- } else if (r == -1 && errno == EPIPE) {
- do
- err = waitpid(pid, &status, 0); /* okay, got EPIPE */
- while (err == -1 && errno == EINTR);
- assert(err == pid);
- } else
- abort();
-
- uv__close_nocheckstdio(signal_pipe[0]);
-
- for (i = 0; i < options->stdio_count; i++) {
- err = uv__process_open_stream(options->stdio + i, pipes[i], i == 0);
- if (err == 0)
- continue;
-
- while (i--)
- uv__process_close_stream(options->stdio + i);
-
- goto error;
- }
-
- /* Only activate this handle if exec() happened successfully */
- if (exec_errorno == 0) {
- QUEUE_INSERT_TAIL(&loop->process_handles, &process->queue);
- uv__handle_start(process);
- }
-
- process->pid = pid;
- process->exit_cb = options->exit_cb;
-
- uv__free(pipes);
- return exec_errorno;
-
-error:
- if (pipes != NULL) {
- for (i = 0; i < stdio_count; i++) {
- if (i < options->stdio_count)
- if (options->stdio[i].flags & (UV_INHERIT_FD | UV_INHERIT_STREAM))
- continue;
- if (pipes[i][0] != -1)
- uv__close_nocheckstdio(pipes[i][0]);
- if (pipes[i][1] != -1)
- uv__close_nocheckstdio(pipes[i][1]);
- }
- uv__free(pipes);
- }
-
- return err;
-#endif
-}
-
-
-int uv_process_kill(uv_process_t* process, int signum) {
- return uv_kill(process->pid, signum);
-}
-
-
-int uv_kill(int pid, int signum) {
- if (kill(pid, signum))
- return -errno;
- else
- return 0;
-}
-
-
-void uv__process_close(uv_process_t* handle) {
- QUEUE_REMOVE(&handle->queue);
- uv__handle_stop(handle);
- if (QUEUE_EMPTY(&handle->loop->process_handles))
- uv_signal_stop(&handle->loop->child_watcher);
-}