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yaft: implement exit code handling, wait for correct child

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This commit is contained in:
Stefan Seyfried
2018-01-07 23:00:53 +01:00
committed by Thilo Graf
parent ad851bcc06
commit afed654ff9
1 changed files with 26 additions and 10 deletions
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36
src/gui/widget/yaft/yaft_class.cpp
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@@ -41,6 +41,10 @@
#undef DEBUG
#endif
/* this will not fly with more than one instance */
static pid_t childpid;
static int exitcode;
static void sig_handler(int signo)
{
/* global */
@@ -48,10 +52,23 @@ static void sig_handler(int signo)
logging(DEBUG, "caught signal! no:%d\n", signo);
if (signo == SIGCHLD) {
child_alive = false;
wait(NULL);
if (signo != SIGCHLD)
return;
int wstatus;
int ret = waitpid(childpid, &wstatus, 0);
if (ret < 0) {
int e = errno;
logging(ERROR, "terminal: wait for %d returned %m\n", childpid);
if (e == ECHILD)
return; /* don_t reset child_alive */
}
if (WIFEXITED(wstatus))
exitcode = WEXITSTATUS(wstatus);
else if (WIFSIGNALED(wstatus))
exitcode = 128 + WTERMSIG(wstatus); /* simulate shell behaviour */
logging(WARN, "terminal: %d exited with %d\n", childpid, exitcode);
child_alive = false;
}
bool tty_init(void)
@@ -91,7 +108,7 @@ bool tty_init(void)
}
static const char * const *yaft_argv;
static bool fork_and_exec(int *master, int lines, int cols)
static pid_t fork_and_exec(int *master, int lines, int cols)
{
struct winsize ws;
ws.ws_row = lines;
@@ -103,15 +120,13 @@ static bool fork_and_exec(int *master, int lines, int cols)
pid_t pid;
pid = eforkpty(master, NULL, NULL, &ws);
if (pid < 0)
return false;
else if (pid == 0) { /* child */
if (pid == 0) { /* child */
esetenv("TERM", term_name, 1);
execvp(yaft_argv[0], (char * const *)yaft_argv);
/* never reach here */
exit(EXIT_FAILURE);
}
return true;
return pid;
}
static int check_fds(fd_set *fds, struct timeval *tv, int input, int master)
@@ -152,6 +167,7 @@ int YaFT::run(void)
term.txt.push("");
term.lines_available = 0;
term.nlseen = false;
exitcode = 0;
/* init */
if (setlocale(LC_ALL, "") == NULL) /* for wcwidth() */
@@ -173,7 +189,7 @@ int YaFT::run(void)
}
/* fork and exec shell */
if (!fork_and_exec(&term.fd, term.lines, term.cols)) {
if ((childpid = fork_and_exec(&term.fd, term.lines, term.cols)) < 0) {
logging(FATAL, "forkpty failed\n");
goto tty_init_failed;
}
@@ -223,7 +239,7 @@ int YaFT::run(void)
/* normal exit */
term_die(&term);
return EXIT_SUCCESS;
return exitcode;
/* error exit */
tty_init_failed: