Differential D21481 Diff 66992 usr.sbin/cron/cron/do_command.c

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usr.sbin/cron/cron/do_command.c

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#endif		#endif


static void child_process(entry , user ),		static void child_process(entry , user ),
do_univ(user *);		do_univ(user *);

static WAIT_T wait_on_child(PID_T, const char *);		static WAIT_T wait_on_child(PID_T, const char *);

		extern char *environ;

void		void
do_command(e, u)		do_command(e, u)
entry *e;		entry *e;
user *u;		user *u;
{		{
pid_t pid;		pid_t pid;

Debug(DPROC, ("[%d] do_command(%s, (%s,%d,%d))\n",		Debug(DPROC, ("[%d] do_command(%s, (%s,%d,%d))\n",
▲ Show 20 Lines • Show All 226 Lines • ▼ Show 20 Lines	#endif
close(stdout_pipe[WRITE_PIPE]);		close(stdout_pipe[WRITE_PIPE]);

/* set our login universe. Do this in the grandchild		/* set our login universe. Do this in the grandchild
* so that the child can invoke /usr/lib/sendmail		* so that the child can invoke /usr/lib/sendmail
* without surprises.		* without surprises.
*/		*/
do_univ(u);		do_univ(u);

		environ = NULL;

# if defined(LOGIN_CAP)		# if defined(LOGIN_CAP)
/* Set user's entire context, but skip the environment		/* Set user's entire context, but note that PATH will
* as cron provides a separate interface for this		* be overridden later
*/		*/
if ((pwd = getpwnam(usernm)) == NULL)		if ((pwd = getpwnam(usernm)) == NULL)
pwd = getpwuid(e->uid);		pwd = getpwuid(e->uid);
lc = NULL;		lc = NULL;
if (pwd != NULL) {		if (pwd != NULL) {
pwd->pw_gid = e->gid;		pwd->pw_gid = e->gid;
if (e->class != NULL)		if (e->class != NULL)
lc = login_getclass(e->class);		lc = login_getclass(e->class);
}		}
if (pwd &&		if (pwd &&
setusercontext(lc, pwd, e->uid,		setusercontext(lc, pwd, e->uid,
LOGIN_SETALL & ~(LOGIN_SETPATH\|LOGIN_SETENV)) == 0)		LOGIN_SETALL) == 0)
(void) endpwent();		(void) endpwent();
else {		else {
/* fall back to the old method */		/* fall back to the old method */
(void) endpwent();		(void) endpwent();
# endif		# endif
/* set our directory, uid and gid. Set gid first,		/* set our directory, uid and gid. Set gid first,
* since once we set uid, we've lost root privileges.		* since once we set uid, we've lost root privileges.
*/		*/
Show All 26 Lines	if (lc != NULL)
login_close(lc);		login_close(lc);
#endif		#endif
chdir(env_get("HOME", e->envp));		chdir(env_get("HOME", e->envp));

/* exec the command.		/* exec the command.
*/		*/
{		{
char *shell = env_get("SHELL", e->envp);		char *shell = env_get("SHELL", e->envp);
		char **p;

		/* Apply the environment from the entry, overriding existing
		* values (this will always set PATH, LOGNAME, etc.) putenv
		* should not fail unless malloc does.
		*/
		for (p = e->envp; *p; ++p) {
		if (putenv(*p) != 0) {
		warn("putenv");
		_exit(ERROR_EXIT);
		}
		}

# if DEBUGGING		# if DEBUGGING
if (DebugFlags & DTEST) {		if (DebugFlags & DTEST) {
fprintf(stderr,		fprintf(stderr,
"debug DTEST is on, not exec'ing command.\n");		"debug DTEST is on, not exec'ing command.\n");
fprintf(stderr,		fprintf(stderr,
"\tcmd='%s' shell='%s'\n", e->cmd, shell);		"\tcmd='%s' shell='%s'\n", e->cmd, shell);
_exit(OK_EXIT);		_exit(OK_EXIT);
}		}
# endif /DEBUGGING/		# endif /DEBUGGING/
execle(shell, shell, "-c", e->cmd, (char *)NULL,		execl(shell, shell, "-c", e->cmd, (char *)NULL);
e->envp);		warn("execl: couldn't exec `%s'", shell);
warn("execle: couldn't exec `%s'", shell);
_exit(ERROR_EXIT);		_exit(ERROR_EXIT);
}		}
break;		break;
default:		default:
/* parent process */		/* parent process */
break;		break;
}		}

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