Diff of /trunk/mkinitrd-magellan/busybox/libbb/setup_environment.c

Parent Directory | Revision Log | Patch

	revision 532 by niro, Sat Sep 1 22:45:15 2007 UTC	revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
#	Line 28	Line 28
28	* SUCH DAMAGE.	* SUCH DAMAGE.
29	*/	*/
30
	#include <stdio.h>
	#include <errno.h>
	#include <unistd.h>
	#include <string.h>
	#include <stdlib.h>
	#include <syslog.h>
	#include <ctype.h>
31	#include "libbb.h"	#include "libbb.h"
32
33		void FAST_FUNC setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw)
	#define DEFAULT_LOGIN_PATH      "/bin:/usr/bin"
	#define DEFAULT_ROOT_LOGIN_PATH "/usr/sbin:/bin:/usr/bin:/sbin"
	void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw)
34	{	{
35	if (loginshell) {	/* Change the current working directory to be the home directory
36	const char *term;	* of the user */
37		if (chdir(pw->pw_dir)) {
38		xchdir("/");
39		bb_error_msg("can't chdir to home directory '%s'", pw->pw_dir);
40		}
41
42	/* Change the current working directory to be the home directory	if (clear_env) {
43	* of the user.  It is a fatal error for this process to be unable	const char *term;
	* to change to that directory.  There is no "default" home
	* directory.
	* Some systems default to HOME=/
	*/
	if (chdir(pw->pw_dir)) {
	xchdir("/");
	fputs("warning: cannot change to home directory\n", stderr);
	}
44
45	/* Leave TERM unchanged.  Set HOME, SHELL, USER, LOGNAME, PATH.	/* Leave TERM unchanged. Set HOME, SHELL, USER, LOGNAME, PATH.
46	Unset all other environment variables.  */	Unset all other environment variables.  */
47	term = getenv("TERM");	term = getenv("TERM");
48	clearenv();	clearenv();
49	if (term)	if (term)
50	xsetenv("TERM", term);	xsetenv("TERM", term);
51	xsetenv("HOME",    pw->pw_dir);	xsetenv("PATH", (pw->pw_uid ? bb_default_path : bb_default_root_path));
52	xsetenv("SHELL",   shell);	goto shortcut;
53	xsetenv("USER",    pw->pw_name);	// No, gcc (4.2.1) is not clever enougn to do it itself.
54	xsetenv("LOGNAME", pw->pw_name);	//xsetenv("USER",    pw->pw_name);
55	xsetenv("PATH",   (pw->pw_uid ? DEFAULT_LOGIN_PATH : DEFAULT_ROOT_LOGIN_PATH));	//xsetenv("LOGNAME", pw->pw_name);
56		//xsetenv("HOME",    pw->pw_dir);
57		//xsetenv("SHELL",   shell);
58	}	}
59	else if (changeenv) {	else if (change_env) {
60	/* Set HOME, SHELL, and if not becoming a super-user,	/* Set HOME, SHELL, and if not becoming a super-user,
61	USER and LOGNAME.  */	USER and LOGNAME.  */
	xsetenv("HOME",  pw->pw_dir);
	xsetenv("SHELL", shell);
62	if (pw->pw_uid) {	if (pw->pw_uid) {
63		shortcut:
64	xsetenv("USER",    pw->pw_name);	xsetenv("USER",    pw->pw_name);
65	xsetenv("LOGNAME", pw->pw_name);	xsetenv("LOGNAME", pw->pw_name);
66	}	}
67		xsetenv("HOME",    pw->pw_dir);
68		xsetenv("SHELL",   shell);
69	}	}
70	}	}

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