This is an automated email from the git hooks/post-receive script. x2go pushed a change to branch bugfix/osx in repository x2goclient. from fde01ad x2goclient.cpp: create new argv array on the heap instead of on the stack. new 7aea2f6 unixhelper.{cpp,h}: raise sleeping time to two seconds and grace period to 10 seconds. new 6c348b0 {unixhelper.{cpp,h},x2goclient.cpp}: switch main cleanup handling to parent PID polling. new 5d5edbb unixhelper.{cpp,h}: ignore SIGINT, SIGTERM, SIGPIPE, SIGQUIT, SIGUSR1 and SIGUSR2. new 5a776ed x2goclient.cpp: fix failing exec() call for the UNIX helper utility: correctly terminate arguments vector. The 4 revisions listed above as "new" are entirely new to this repository and will be described in separate emails. The revisions listed as "adds" were already present in the repository and have only been added to this reference. Summary of changes: debian/changelog | 8 ++++++++ src/unixhelper.cpp | 34 +++++++++++++++++++++++++--------- src/unixhelper.h | 18 ++++++++++++++---- src/x2goclient.cpp | 8 ++------ 4 files changed, 49 insertions(+), 19 deletions(-) -- Alioth's /srv/git/code.x2go.org/x2goclient.git//..//_hooks_/post-receive-email on /srv/git/code.x2go.org/x2goclient.git
This is an automated email from the git hooks/post-receive script. x2go pushed a commit to branch bugfix/osx in repository x2goclient. commit 7aea2f6b812367e3d4326adccd05337035356c8d Author: Mihai Moldovan <ionic@ionic.de> Date: Wed Mar 18 21:08:46 2015 +0100 unixhelper.{cpp,h}: raise sleeping time to two seconds and grace period to 10 seconds. --- debian/changelog | 2 ++ src/unixhelper.cpp | 8 ++++---- src/unixhelper.h | 4 ++-- 3 files changed, 8 insertions(+), 6 deletions(-) diff --git a/debian/changelog b/debian/changelog index c903e03..feecf53 100644 --- a/debian/changelog +++ b/debian/changelog @@ -277,6 +277,8 @@ x2goclient (4.0.4.0-0x2go1) UNRELEASED; urgency=low - x2goclient.cpp: create new argv array on the heap instead of on the stack. Stack data will be invalid once the function goes out of scope (which is what execv is doing.) + - unixhelper.{cpp,h}: raise sleeping time to two seconds and grace period + to 10 seconds. -- X2Go Release Manager <git-admin@x2go.org> Thu, 19 Feb 2015 13:25:28 +0100 diff --git a/src/unixhelper.cpp b/src/unixhelper.cpp index 2b057ff..2bdaec1 100644 --- a/src/unixhelper.cpp +++ b/src/unixhelper.cpp @@ -44,8 +44,8 @@ namespace unixhelper { std::cerr << "WARNING: unable to send SIGTERM to process group: " << std::strerror (errno) << std::endl; } - /* Grant a grace period of (at least) 5 seconds. */ - sleep (5); + /* Grant a grace period of (at least) 10 seconds. */ + sleep (10); /* Don't handle any errors here, because we die anyway. */ killpg (getpgrp (), SIGKILL); @@ -102,9 +102,9 @@ namespace unixhelper { } } - /* Sleep forever... at least one second in each run. */ + /* Sleep forever... at least two seconds in each run. */ for (;;) { - sleep (1); + sleep (2); } } } diff --git a/src/unixhelper.h b/src/unixhelper.h index 7ca8b43..9f213a8 100644 --- a/src/unixhelper.h +++ b/src/unixhelper.h @@ -28,7 +28,7 @@ namespace unixhelper { /* * Unblocks all signals and installs a signal handler for SIGHUP, - * which calls kill_pgroup. + * which calls kill_pgroup(). * * Should signal unblocking or installing the signal handler fail, * an emergency exit is performed and @@ -41,7 +41,7 @@ namespace unixhelper { /* * Kills the whole process group. * First, SIGTERM is sent to the group. - * A 5 seconds grace period is granted to make sure + * A 10 seconds grace period is granted to make sure * processes exit cleanly on their own. * Lastly, SIGKILL is sent to the group -- which also * implies the demise of this program. -- Alioth's /srv/git/code.x2go.org/x2goclient.git//..//_hooks_/post-receive-email on /srv/git/code.x2go.org/x2goclient.git
This is an automated email from the git hooks/post-receive script. x2go pushed a commit to branch bugfix/osx in repository x2goclient. commit 6c348b0933ef4cb0b31a44caa4dbb5422ddd4e59 Author: Mihai Moldovan <ionic@ionic.de> Date: Wed Mar 18 21:15:08 2015 +0100 {unixhelper.{cpp,h},x2goclient.cpp}: switch main cleanup handling to parent PID polling. --- debian/changelog | 2 ++ src/unixhelper.cpp | 9 ++++++++- src/unixhelper.h | 11 +++++++++-- src/x2goclient.cpp | 2 +- 4 files changed, 20 insertions(+), 4 deletions(-) diff --git a/debian/changelog b/debian/changelog index feecf53..a2c19ee 100644 --- a/debian/changelog +++ b/debian/changelog @@ -279,6 +279,8 @@ x2goclient (4.0.4.0-0x2go1) UNRELEASED; urgency=low (which is what execv is doing.) - unixhelper.{cpp,h}: raise sleeping time to two seconds and grace period to 10 seconds. + - {unixhelper.{cpp,h},x2goclient.cpp}: switch main cleanup handling to + parent PID polling. -- X2Go Release Manager <git-admin@x2go.org> Thu, 19 Feb 2015 13:25:28 +0100 diff --git a/src/unixhelper.cpp b/src/unixhelper.cpp index 2bdaec1..2f89e2f 100644 --- a/src/unixhelper.cpp +++ b/src/unixhelper.cpp @@ -53,7 +53,7 @@ namespace unixhelper { } - int unix_cleanup () { + int unix_cleanup (const pid_t parent) { /* * Unblock all signals first. * Signal blocks are inherited, so you never you what is currently set. @@ -104,6 +104,13 @@ namespace unixhelper { /* Sleep forever... at least two seconds in each run. */ for (;;) { + pid_t cur_ppid = getppid (); + + /* cur_ppid should match parent, otherwise the parent died. */ + if (cur_ppid != parent) { + kill_pgroup (SIGHUP); + } + sleep (2); } } diff --git a/src/unixhelper.h b/src/unixhelper.h index 9f213a8..7511d4d 100644 --- a/src/unixhelper.h +++ b/src/unixhelper.h @@ -22,6 +22,7 @@ #define UNIXHELPER_H #include <QtCore/qglobal.h> +#include <unistd.h> #ifdef Q_OS_UNIX @@ -35,8 +36,12 @@ namespace unixhelper { * the whole process group killed. * * Loops indefinitely afterwards. + * + * In this loop, the current parent PID is polled and compared against + * the original value passed via parameter parent. + * Should they mismatch, the parent died and kill_pgroup() is called. */ - int unix_cleanup (); + int unix_cleanup (const pid_t parent); /* * Kills the whole process group. @@ -49,7 +54,9 @@ namespace unixhelper { * signal may be any of: * * -1 to indicate an error leading to emergency termination * * SIGHUP as the standard signal that is sent when the - * group leeader dies + * group leader dies under specific circumstances + * (we cannot rely that this always happens, though, + * so a polling solution is needed, see unix_cleanup().) */ void kill_pgroup (int signal); } diff --git a/src/x2goclient.cpp b/src/x2goclient.cpp index 479d564..92d614d 100644 --- a/src/x2goclient.cpp +++ b/src/x2goclient.cpp @@ -109,7 +109,7 @@ int main (int argc, char **argv) { if (unix_helper_request) { /* We were instructed to start as the UNIX cleanup helper tool. */ - return (unixhelper::unix_cleanup ()); + return (unixhelper::unix_cleanup (getppid ())); } else { /* -- Alioth's /srv/git/code.x2go.org/x2goclient.git//..//_hooks_/post-receive-email on /srv/git/code.x2go.org/x2goclient.git
This is an automated email from the git hooks/post-receive script. x2go pushed a commit to branch bugfix/osx in repository x2goclient. commit 5d5edbb6876cc784821dfc6a5efa1d94ca183c05 Author: Mihai Moldovan <ionic@ionic.de> Date: Wed Mar 18 22:22:27 2015 +0100 unixhelper.{cpp,h}: ignore SIGINT, SIGTERM, SIGPIPE, SIGQUIT, SIGUSR1 and SIGUSR2. --- debian/changelog | 2 ++ src/unixhelper.cpp | 17 +++++++++++++---- src/unixhelper.h | 3 +++ 3 files changed, 18 insertions(+), 4 deletions(-) diff --git a/debian/changelog b/debian/changelog index a2c19ee..3983db5 100644 --- a/debian/changelog +++ b/debian/changelog @@ -281,6 +281,8 @@ x2goclient (4.0.4.0-0x2go1) UNRELEASED; urgency=low to 10 seconds. - {unixhelper.{cpp,h},x2goclient.cpp}: switch main cleanup handling to parent PID polling. + - unixhelper.{cpp,h}: ignore SIGINT, SIGTERM, SIGPIPE, SIGQUIT, SIGUSR1 + and SIGUSR2. -- X2Go Release Manager <git-admin@x2go.org> Thu, 19 Feb 2015 13:25:28 +0100 diff --git a/src/unixhelper.cpp b/src/unixhelper.cpp index 2f89e2f..afc7b60 100644 --- a/src/unixhelper.cpp +++ b/src/unixhelper.cpp @@ -28,6 +28,7 @@ #include <iostream> #include <cstring> #include <cerrno> +#include <vector> /* For documentation please see unixhelper.h. */ @@ -73,15 +74,23 @@ namespace unixhelper { /* Anything here shall be unreachable. */ } - { + std::vector<int> ignore_signals; + ignore_signals.push_back (SIGINT); + ignore_signals.push_back (SIGTERM); + ignore_signals.push_back (SIGPIPE); + ignore_signals.push_back (SIGQUIT); + ignore_signals.push_back (SIGUSR1); + ignore_signals.push_back (SIGUSR2); + + for (std::vector<int>::iterator it = ignore_signals.begin (); it != ignore_signals.end (); ++it) { struct sigaction sig_action; sig_action.sa_handler = SIG_IGN; sig_action.sa_mask = empty_set; sig_action.sa_flags = SA_RESTART; - /* Set up signal handler to ignore SIGTERM. */ - if (0 != sigaction (SIGTERM, &sig_action, NULL)) { - std::cerr << "Unable to ignore SIGTERM: " << std::strerror (errno) << std::endl; + /* Set up signal handler to ignore the current signal. */ + if (0 != sigaction (*it, &sig_action, NULL)) { + std::cerr << "Unable to ignore signal " << strsignal (*it) << ": " << std::strerror (errno) << std::endl; kill_pgroup (-1); /* Anything here shall be unreachable. */ diff --git a/src/unixhelper.h b/src/unixhelper.h index 7511d4d..a34456e 100644 --- a/src/unixhelper.h +++ b/src/unixhelper.h @@ -35,6 +35,9 @@ namespace unixhelper { * an emergency exit is performed and * the whole process group killed. * + * The signals SIGINT, SIGTERM, SIGPIPE, SIGQUIT, SIGUSR1 and + * SIGUSR2 are ignored. + * * Loops indefinitely afterwards. * * In this loop, the current parent PID is polled and compared against -- Alioth's /srv/git/code.x2go.org/x2goclient.git//..//_hooks_/post-receive-email on /srv/git/code.x2go.org/x2goclient.git
This is an automated email from the git hooks/post-receive script. x2go pushed a commit to branch bugfix/osx in repository x2goclient. commit 5a776edd1822daade569748cdf12878037314c11 Author: Mihai Moldovan <ionic@ionic.de> Date: Fri Mar 20 04:02:06 2015 +0100 x2goclient.cpp: fix failing exec() call for the UNIX helper utility: correctly terminate arguments vector. --- debian/changelog | 2 ++ src/x2goclient.cpp | 6 +----- 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/debian/changelog b/debian/changelog index 3983db5..000b81e 100644 --- a/debian/changelog +++ b/debian/changelog @@ -283,6 +283,8 @@ x2goclient (4.0.4.0-0x2go1) UNRELEASED; urgency=low parent PID polling. - unixhelper.{cpp,h}: ignore SIGINT, SIGTERM, SIGPIPE, SIGQUIT, SIGUSR1 and SIGUSR2. + - x2goclient.cpp: fix failing exec() call for the UNIX helper utility: + correctly terminate arguments vector. -- X2Go Release Manager <git-admin@x2go.org> Thu, 19 Feb 2015 13:25:28 +0100 diff --git a/src/x2goclient.cpp b/src/x2goclient.cpp index 92d614d..d8ae6fa 100644 --- a/src/x2goclient.cpp +++ b/src/x2goclient.cpp @@ -54,11 +54,7 @@ int fork_helper (int argc, char **argv) { } /* Add null pointer as last element. */ - { - std::vector<char> *tmp = new (std::vector<char>) (); - tmp->push_back (0); - new_argv_c_str->push_back (&tmp->front ()); - } + new_argv_c_str->push_back (0); if (0 != execv (new_argv_c_str->front (), &(new_argv_c_str->front ()))) { std::cerr << "Failed to re-execute process as UNIX cleanup helper tool: " << std::strerror (errno) << "\n" -- Alioth's /srv/git/code.x2go.org/x2goclient.git//..//_hooks_/post-receive-email on /srv/git/code.x2go.org/x2goclient.git
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