int smbrun(const char *cmd, int *outfd)
{
OutputDebugString("smbrun is not supported\n");
#ifndef _XBOX
pid_t pid;
uid_t uid = current_user.ut.uid;
gid_t gid = current_user.ut.gid;
/*
* Lose any elevated privileges.
*/
drop_effective_capability(KERNEL_OPLOCK_CAPABILITY);
drop_effective_capability(DMAPI_ACCESS_CAPABILITY);
/* point our stdout at the file we want output to go into */
if (outfd && ((*outfd = setup_out_fd()) == -1)) {
return -1;
}
/* in this method we will exec /bin/sh with the correct
arguments, after first setting stdout to point at the file */
/*
* We need to temporarily stop CatchChild from eating
* SIGCLD signals as it also eats the exit status code. JRA.
*/
CatchChildLeaveStatus();
if ((pid=sys_fork()) < 0) {
DEBUG(0,("smbrun: fork failed with error %s\n", strerror(errno) ));
CatchChild();
if (outfd) {
close(*outfd);
*outfd = -1;
}
return errno;
}
if (pid) {
/*
* Parent.
*/
int status=0;
pid_t wpid;
/* the parent just waits for the child to exit */
while((wpid = sys_waitpid(pid,&status,0)) < 0) {
if(errno == EINTR) {
errno = 0;
continue;
}
break;
}
CatchChild();
if (wpid != pid) {
DEBUG(2,("waitpid(%d) : %s\n",(int)pid,strerror(errno)));
if (outfd) {
close(*outfd);
*outfd = -1;
}
return -1;
}
/* Reset the seek pointer. */
if (outfd) {
sys_lseek(*outfd, 0, SEEK_SET);
}
#if defined(WIFEXITED) && defined(WEXITSTATUS)
if (WIFEXITED(status)) {
return WEXITSTATUS(status);
}
#endif
return status;
}
CatchChild();
/* we are in the child. we exec /bin/sh to do the work for us. we
don't directly exec the command we want because it may be a
pipeline or anything else the config file specifies */
/* point our stdout at the file we want output to go into */
if (outfd) {
close(1);
if (sys_dup2(*outfd,1) != 1) {
DEBUG(2,("Failed to create stdout file descriptor\n"));
close(*outfd);
exit(80);
}
}
/* now completely lose our privileges. This is a fairly paranoid
way of doing it, but it does work on all systems that I know of */
become_user_permanently(uid, gid);
if (getuid() != uid || geteuid() != uid ||
getgid() != gid || getegid() != gid) {
/* we failed to lose our privileges - do not execute
the command */
exit(81); /* we can't print stuff at this stage,
instead use exit codes for debugging */
}
#ifndef __INSURE__
/* close all other file descriptors, leaving only 0, 1 and 2. 0 and
2 point to /dev/null from the startup code */
{
int fd;
for (fd=3;fd<256;fd++) close(fd);
}
#endif
execl("/bin/sh","sh","-c",cmd,NULL);
/* not reached */
exit(82);
#endif //_XBOX
return 1;
}
int smbrunsecret(const char *cmd, const char *secret)
{
pid_t pid;
uid_t uid = current_user.ut.uid;
gid_t gid = current_user.ut.gid;
int ifd[2];
/*
* Lose any elevated privileges.
*/
drop_effective_capability(KERNEL_OPLOCK_CAPABILITY);
drop_effective_capability(DMAPI_ACCESS_CAPABILITY);
/* build up an input pipe */
if(pipe(ifd)) {
return -1;
}
/* in this method we will exec /bin/sh with the correct
arguments, after first setting stdout to point at the file */
/*
* We need to temporarily stop CatchChild from eating
* SIGCLD signals as it also eats the exit status code. JRA.
*/
CatchChildLeaveStatus();
if ((pid=sys_fork()) < 0) {
DEBUG(0, ("smbrunsecret: fork failed with error %s\n", strerror(errno)));
CatchChild();
return errno;
}
if (pid) {
/*
* Parent.
*/
int status = 0;
pid_t wpid;
size_t towrite;
ssize_t wrote;
close(ifd[0]);
/* send the secret */
towrite = strlen(secret);
wrote = write(ifd[1], secret, towrite);
if ( wrote != towrite ) {
DEBUG(0,("smbrunsecret: wrote %ld of %lu bytes\n",(long)wrote,(unsigned long)towrite));
}
fsync(ifd[1]);
close(ifd[1]);
/* the parent just waits for the child to exit */
while((wpid = sys_waitpid(pid, &status, 0)) < 0) {
if(errno == EINTR) {
errno = 0;
continue;
}
break;
}
CatchChild();
if (wpid != pid) {
DEBUG(2, ("waitpid(%d) : %s\n", (int)pid, strerror(errno)));
return -1;
}
#if defined(WIFEXITED) && defined(WEXITSTATUS)
if (WIFEXITED(status)) {
return WEXITSTATUS(status);
}
#endif
return status;
}
CatchChild();
/* we are in the child. we exec /bin/sh to do the work for us. we
don't directly exec the command we want because it may be a
pipeline or anything else the config file specifies */
close(ifd[1]);
close(0);
if (sys_dup2(ifd[0], 0) != 0) {
DEBUG(2,("Failed to create stdin file descriptor\n"));
close(ifd[0]);
exit(80);
}
/* now completely lose our privileges. This is a fairly paranoid
way of doing it, but it does work on all systems that I know of */
become_user_permanently(uid, gid);
if (getuid() != uid || geteuid() != uid ||
getgid() != gid || getegid() != gid) {
/* we failed to lose our privileges - do not execute
the command */
exit(81); /* we can't print stuff at this stage,
instead use exit codes for debugging */
}
#ifndef __INSURE__
/* close all other file descriptors, leaving only 0, 1 and 2. 0 and
2 point to /dev/null from the startup code */
{
int fd;
for (fd = 3; fd < 256; fd++) close(fd);
}
#endif
execl("/bin/sh", "sh", "-c", cmd, NULL);
/* not reached */
exit(82);
return 1;
}
