afprun.c File Reference

#include <errno.h>
#include <grp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <atalk/logger.h>
#include <atalk/util.h>

Macros
#define	USE_SETEUID   1

Functions
static int	setup_out_fd (void)
static void	gain_root_privilege (void)
	Gain root privilege before doing something.
static void	gain_root_group_privilege (void)
	Ensure our real and effective groups are zero.
static int	become_user_permanently (uid_t uid, gid_t gid)
	Become the specified uid and gid - permanently !
int	afprun (char *cmd, int *outfd)
	run a command
int	afprun_bg (char *cmd)
	Run a command in the background without waiting.

Macro Definition Documentation

USE_SETEUID

#define USE_SETEUID   1

Function Documentation

afprun()

int afprun	(	char *	cmd,
		int *	outfd )

run a command

Note

being careful about uid/gid handling and putting the output in outfd (or discard it if outfd is NULL).

afprun_bg()

int afprun_bg

(

char *

cmd

)

Run a command in the background without waiting.

Note

being careful about uid/gid handling

become_user_permanently()

int become_user_permanently ( uid_t uid, gid_t gid )

static

Become the specified uid and gid - permanently !

Note

there should be no way back if possible

gain_root_group_privilege()

void gain_root_group_privilege ( void )

static

Ensure our real and effective groups are zero.

Note

we want to end up with rgid==egid==0

gain_root_privilege()

void gain_root_privilege ( void )

static

Gain root privilege before doing something.

Note

We want to end up with ruid==euid==0

setup_out_fd()

int setup_out_fd ( void )

static

This is a utility function of afprun().