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moved some variables around

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19457 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stefano Ceccherini
2006-12-11 15:58:29 +00:00
parent a439fba59d
commit 4a765b5f26
1 changed files with 44 additions and 52 deletions
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src/apps/terminal/spawn.cpp
+44 -52
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@@ -91,11 +91,6 @@ setenv(const char *var, const char *value, bool overwrite)
#endif
/*
* reapchild. Child process is out there, let's catch its termination.
*/
/*
* spawn_shell(): spawn child process, create pty master/slave device and
* execute SHELL program.
@@ -119,43 +114,26 @@ typedef struct
#define PTY_NG 1 /* pty open or set termios NG */
#define PTY_WS 2 /* pty need WINSIZE (row and col ) */
/* global varriables */
/* global variables */
pid_t sh_pid;
int
spawn_shell(int row, int col, const char *command, const char *coding)
{
int done = 0;
pid_t pgrp;
int master = -1;
int slave;
struct termios tio;
struct winsize ws;
handshake_t handshake;
int i = 0;
time_t now_time_t;
struct tm *now_time;
int now_hour;
char *args[16];
char com_line[256];
char *ptr;
char err_msg[256];
signal(SIGTTOU, SIG_IGN);
/*
* Get a psuedo-tty. We do this by cycling through files in the
* directory. The oparationg system will not allow us to open a master
* which is already in use, so we simply go until the open succeeds.
*/
/*
* Get a psuedo-tty. We do this by cycling through files in the
* directory. The oparationg system will not allow us to open a master
* which is already in use, so we simply go until the open succeeds.
*/
char tty_name[B_PATH_NAME_LENGTH];
int master = -1;
DIR *dir = opendir("/dev/pt/");
if (dir != NULL) {
struct dirent *dirEntry;
@@ -181,7 +159,6 @@ spawn_shell(int row, int col, const char *command, const char *coding)
closedir(dir);
}
// If master is still < 0 then we haven't found a tty we can use
if (master < 0) {
printf("didn't find any available pesudo ttys.");
return -1;
@@ -217,18 +194,19 @@ spawn_shell(int row, int col, const char *command, const char *coding)
close(pc_pipe[1]);
/* Set process session leader */
if ((pgrp = setsid()) < 0) {
if (setsid() < 0) {
handshake.status = PTY_NG;
sprintf(handshake.msg, "could not set session leader.");
write(cp_pipe[1], (char *)&handshake, sizeof (handshake));
exit(1);
}
/* change pty owner and asscess mode. */
/* change pty owner and access mode. */
chown(tty_name, getuid(), getgid());
chmod(tty_name, S_IRUSR | S_IWUSR);
/* open slave pty */
int slave = -1;
if ((slave = open(tty_name, O_RDWR)) < 0) {
handshake.status = PTY_NG;
sprintf(handshake.msg, "can't open tty (%s).", tty_name);
@@ -236,7 +214,11 @@ spawn_shell(int row, int col, const char *command, const char *coding)
exit(1);
}
/* get tty termios (don't necessary). */
struct termios tio;
/* get tty termios (not necessary).
* TODO: so why are we doing it ?
*/
tcgetattr(slave, &tio);
/* set signal default */
@@ -281,7 +263,7 @@ spawn_shell(int row, int col, const char *command, const char *coding)
tio.c_lflag |= ISIG|ICANON|ECHO|ECHOE|ECHONL;
tio.c_lflag &= ~(ECHOK | IEXTEN);
/* set control charactors. */
/* set control characters. */
tio.c_cc[VINTR] = 'C' & 0x1f; /* '^C' */
tio.c_cc[VQUIT] = CQUIT; /* '^\' */
tio.c_cc[VERASE] = 0x08; /* '^H' */
@@ -343,13 +325,18 @@ spawn_shell(int row, int col, const char *command, const char *coding)
* to this process group ID (equal process ID).
*/
pgrp = getpid();
setpgid(pgrp, pgrp);
tcsetpgrp(0, pgrp);
pid_t processGroup = getpid();
if (setpgid(processGroup, processGroup) < 0) {
handshake.status = PTY_NG;
sprintf(handshake.msg, "can't set process group id.");
write(cp_pipe[1], (char *)&handshake, sizeof(handshake));
exit(1);
}
tcsetpgrp(0, processGroup);
/* mark the pipes as close on exec */
fcntl(cp_pipe[1], F_SETFD, 1);
fcntl(pc_pipe[0], F_SETFD, 1);
fcntl(cp_pipe[1], F_SETFD, FD_CLOEXEC);
fcntl(pc_pipe[0], F_SETFD, FD_CLOEXEC);
/* pty open and set termios successful. */
handshake.status = PTY_OK;
@@ -367,14 +354,15 @@ spawn_shell(int row, int col, const char *command, const char *coding)
*/
if (command == NULL)
command = SHELL_COMMAND;
memcpy (com_line, command, 256);
ptr = com_line;
/*
* split up the arguments in the command into an artv-like structure.
*/
char commandLine[256];
memcpy(commandLine, command, 256);
char *ptr = commandLine;
char *args[16];
int i = 0;
while (*ptr) {
/* Skip white space */
while ((*ptr == ' ') || (*ptr == '\t'))
@@ -390,13 +378,15 @@ spawn_shell(int row, int col, const char *command, const char *coding)
setenv("SHELL", *args, true);
#if 0
/*
* Print Welcome Message.
* (But, Only print message when MuTerminal coding is UTF8.)
*/
now_time_t = time(NULL);
now_time = localtime (&now_time_t);
time_t now_time_t = time(NULL);
struct tm *now_time = localtime (&now_time_t);
int now_hour = 0;
if (now_time->tm_hour >= 5 && now_time->tm_hour < 11) {
now_hour = 0;
} else if (now_time->tm_hour >= 11 && now_time->tm_hour <= 18 ) {
@@ -404,16 +394,17 @@ spawn_shell(int row, int col, const char *command, const char *coding)
} else {
now_hour = 2;
}
#endif
execve(*args, args, environ);
/*
* Exec failed.
*/
sleep(1);
sprintf(err_msg, kSpawnAlertMessage, com_line, strerror(errno));
char errorMessage[256];
snprintf(errorMessage, sizeof(errorMessage), kSpawnAlertMessage, commandLine, strerror(errno));
if (system(err_msg) == 0)
if (system(errorMessage) == 0)
execl("/bin/sh", "/bin/sh", "-login", NULL);
exit(1);
@@ -432,6 +423,7 @@ spawn_shell(int row, int col, const char *command, const char *coding)
* close parent control tty.
*/
int done = 0;
while (!done) {
read (cp_pipe[0], (char *)&handshake, sizeof (handshake));