Merge pull request #6412 from electron/relaunch-dev-null
Redirect relaunch process's stdout to /dev/null
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commit
187b68b8b2
1 changed files with 10 additions and 0 deletions
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@ -4,11 +4,13 @@
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#include "atom/browser/relauncher.h"
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/prctl.h>
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#include <sys/signalfd.h>
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#include "base/files/file_util.h"
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#include "base/files/scoped_file.h"
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#include "base/logging.h"
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#include "base/posix/eintr_wrapper.h"
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#include "base/process/launch.h"
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@ -55,9 +57,17 @@ void RelauncherSynchronizeWithParent() {
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int LaunchProgram(const StringVector& relauncher_args,
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const StringVector& argv) {
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// Redirect the stdout of child process to /dev/null, otherwise after
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// relaunch the child process will raise exception when writing to stdout.
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base::ScopedFD devnull(HANDLE_EINTR(open("/dev/null", O_WRONLY)));
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base::FileHandleMappingVector no_stdout;
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no_stdout.push_back(std::make_pair(devnull.get(), STDERR_FILENO));
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no_stdout.push_back(std::make_pair(devnull.get(), STDOUT_FILENO));
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base::LaunchOptions options;
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options.allow_new_privs = true;
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options.new_process_group = true; // detach
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options.fds_to_remap = &no_stdout;
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base::Process process = base::LaunchProcess(argv, options);
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return process.IsValid() ? 0 : 1;
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}
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