void userdel_main(void)
{
struct passwd *pwd = NULL;
pwd = xgetpwnam(*toys.optargs);
update_password("/etc/passwd", pwd->pw_name, NULL);
update_password("/etc/shadow", pwd->pw_name, NULL);
// delete the group named USER, and remove user from group.
// could update_password() be used for this?
// not a good idea, as update_passwd() updates one entry at a time
// in this case it will be modifying the files as many times the
// USER appears in group database files. So the customized version
// of update_passwd() is here.
update_groupfiles("/etc/group", *toys.optargs);
update_groupfiles("/etc/gshadow", *toys.optargs);
if (toys.optflags & FLAG_r) {
char *arg[] = {"rm", "-fr", pwd->pw_dir, NULL, NULL};
sprintf(toybuf, "/var/spool/mail/%s",pwd->pw_name);
arg[3] = toybuf;
xexec(arg);
}
}
void time_main(void)
{
pid_t pid;
struct timeval tv, tv2;
gettimeofday(&tv, NULL);
if (!(pid = xfork())) xexec(toys.optargs);
else {
int stat;
struct rusage ru;
float r, u, s;
wait4(pid, &stat, 0, &ru);
gettimeofday(&tv2, NULL);
if (tv.tv_usec > tv2.tv_usec) {
tv2.tv_usec += 1000000;
tv2.tv_sec--;
}
r = (tv2.tv_sec-tv.tv_sec)+((tv2.tv_usec-tv.tv_usec)/1000000.0);
u = ru.ru_utime.tv_sec+(ru.ru_utime.tv_usec/1000000.0);
s = ru.ru_stime.tv_sec+(ru.ru_stime.tv_usec/1000000.0);
fprintf(stderr, "real %f\nuser %f\nsys %f\n", r, u, s);
toys.exitval = WIFEXITED(stat) ? WEXITSTATUS(stat) : WTERMSIG(stat);
}
}
void reset_main(void)
{
char *args[] = {"stty", "sane", NULL};
/* \033c - reset the terminal with default setting
* \033(B - set the G0 character set (B=US)
* \033[2J - clear the whole screen
* \033[0m - Reset all attributes
*/
if (isatty(1)) xprintf("\033c\033(B\033[0m\033[J\033[?25h");
fflush(stdout);
// set the terminal to sane settings
xexec(args);
}
void nohup_main(void)
{
xsignal(SIGHUP, SIG_IGN);
if (isatty(1)) {
close(1);
if (-1 == open("nohup.out", O_CREAT|O_APPEND|O_WRONLY,
S_IRUSR|S_IWUSR ))
{
char *temp = getenv("HOME");
temp = xmprintf("%s/%s", temp ? temp : "", "nohup.out");
xcreate(temp, O_CREAT|O_APPEND|O_WRONLY, 0600);
free(temp);
}
}
if (isatty(0)) {
close(0);
xopen_stdio("/dev/null", O_RDONLY);
}
xexec(toys.optargs);
}
void
sys_exec_checkpoint_script (const char *script_name,
const char *archive_name,
int checkpoint_number)
{
pid_t pid;
char uintbuf[UINTMAX_STRSIZE_BOUND];
pid = xfork ();
if (pid != 0)
{
/* Master */
int status;
while (waitpid (pid, &status, 0) == -1)
if (errno != EINTR)
{
waitpid_error (script_name);
break;
}
return;
}
/* Child */
setenv ("TAR_VERSION", PACKAGE_VERSION, 1);
setenv ("TAR_ARCHIVE", archive_name, 1);
setenv ("TAR_CHECKPOINT", STRINGIFY_BIGINT (checkpoint_number, uintbuf), 1);
setenv ("TAR_BLOCKING_FACTOR",
STRINGIFY_BIGINT (blocking_factor, uintbuf), 1);
setenv ("TAR_SUBCOMMAND", subcommand_string (subcommand_option), 1);
setenv ("TAR_FORMAT",
archive_format_string (current_format == DEFAULT_FORMAT ?
archive_format : current_format), 1);
priv_set_restore_linkdir ();
xexec (script_name);
}
cmain()
{
/* set up sector buffers */
bcbx[0].b_link = &bcbx[1];
bcbx[2].b_link = &bcbx[3];
bcbx[0].b_bufdrv = -1;
bcbx[1].b_bufdrv = -1;
bcbx[2].b_bufdrv = -1;
bcbx[3].b_bufdrv = -1;
bcbx[0].b_bufr = &secbuf[0][0];
bcbx[1].b_bufr = &secbuf[1][0];
bcbx[2].b_bufr = &secbuf[2][0];
bcbx[3].b_bufr = &secbuf[3][0];
bufl[0] = &bcbx[0]; /* fat buffers */
bufl[1] = &bcbx[2]; /* dir/data buffers */
osinit();
#if floppy
xsetdrv(0); /* 0 if GEMDOSFI.SYS, 2 if GEMDOSHI.SYS */
#else
xsetdrv(2);
#endif
xexec(0,"COMMAND.PRG","",env);
}
int
sys_exec_command (char *file_name, int typechar, struct tar_stat_info *st)
{
int p[2];
xpipe (p);
pipe_handler = signal (SIGPIPE, SIG_IGN);
global_pid = xfork ();
if (global_pid != 0)
{
xclose (p[PREAD]);
return p[PWRITE];
}
/* Child */
xdup2 (p[PREAD], STDIN_FILENO);
xclose (p[PWRITE]);
stat_to_env (file_name, typechar, st);
priv_set_restore_linkdir ();
xexec (to_command_option);
}
static void
startdevproc(void *a)
{
Sarg *sa = a;
Dev *d;
Devtab *dt;
int argc;
char *args, *argse, **argv;
char *fname;
threadsetgrp(threadid());
d = sa->pp->dev;
dt = sa->dt;
args = sa->args;
argse = sa->args + sizeof sa->args;
argv = sa->argv;
fname = sa->fname;
sa->pp->devmaskp = &dt->devmask;
sa->pp->devnb = getdevnb(&dt->devmask);
if(sa->pp->devnb < 0){
sa->pp->devmaskp = nil;
sa->pp->devnb = 0;
}else
args = seprint(args, argse, "-N %d", sa->pp->devnb);
if(dt->args != nil)
seprint(args, argse, " %s", dt->args);
args = sa->args;
dprint(2, "%s: start: %s %s\n", argv0, dt->name, args);
argv[0] = dt->name;
argc = 1;
if(args[0] != 0)
argc += tokenize(args, argv+1, nelem(sa->argv)-2);
argv[argc] = nil;
if(dt->init == nil){
if(d->dfd > 0 ){
close(d->dfd);
d->dfd = -1;
}
rfork(RFCFDG);
open("/dev/null", OREAD);
open("/dev/cons", OWRITE);
open("/dev/cons", OWRITE);
xexec(sa->rc, argv[0], argv);
snprint(fname, sizeof(sa->fname), "/bin/usb/%s", dt->name);
xexec(sa->rc, fname, argv);
snprint(fname, sizeof(sa->fname), "/boot/%s", dt->name);
xexec(sa->rc, fname, argv);
if(cputype == nil)
cputype = getenv("cputype");
if(cputype != nil){
snprint(fname, sizeof(sa->fname), "/%s/bin/%s",
cputype, dt->name);
argv[0] = fname;
xexec(sa->rc, fname, argv);
}
fprint(2, "%s: %s: not found. can't exec\n", argv0, dt->name);
sendul(sa->rc, -1);
threadexits("exec");
}else{
sa->pp->dev = opendev(d->dir);
sendul(sa->rc, 0);
if(dt->init(d, argc, argv) < 0)
fprint(2, "%s: %s: %r\n", argv0, dt->name);
closedev(d);
free(sa);
}
threadexits(nil);
}
int
sys_exec_info_script (const char **archive_name, int volume_number)
{
pid_t pid;
char uintbuf[UINTMAX_STRSIZE_BOUND];
int p[2];
static RETSIGTYPE (*saved_handler) (int sig);
xpipe (p);
saved_handler = signal (SIGPIPE, SIG_IGN);
pid = xfork ();
if (pid != 0)
{
/* Master */
int rc;
int status;
char *buf = NULL;
size_t size = 0;
FILE *fp;
xclose (p[PWRITE]);
fp = fdopen (p[PREAD], "r");
rc = getline (&buf, &size, fp);
fclose (fp);
if (rc > 0 && buf[rc-1] == '\n')
buf[--rc] = 0;
while (waitpid (pid, &status, 0) == -1)
if (errno != EINTR)
{
signal (SIGPIPE, saved_handler);
waitpid_error (info_script_option);
return -1;
}
signal (SIGPIPE, saved_handler);
if (WIFEXITED (status))
{
if (WEXITSTATUS (status) == 0 && rc > 0)
*archive_name = buf;
else
free (buf);
return WEXITSTATUS (status);
}
free (buf);
return -1;
}
/* Child */
setenv ("TAR_VERSION", PACKAGE_VERSION, 1);
setenv ("TAR_ARCHIVE", *archive_name, 1);
setenv ("TAR_VOLUME", STRINGIFY_BIGINT (volume_number, uintbuf), 1);
setenv ("TAR_BLOCKING_FACTOR",
STRINGIFY_BIGINT (blocking_factor, uintbuf), 1);
setenv ("TAR_SUBCOMMAND", subcommand_string (subcommand_option), 1);
setenv ("TAR_FORMAT",
archive_format_string (current_format == DEFAULT_FORMAT ?
archive_format : current_format), 1);
setenv ("TAR_FD", STRINGIFY_BIGINT (p[PWRITE], uintbuf), 1);
xclose (p[PREAD]);
priv_set_restore_linkdir ();
xexec (info_script_option);
}
/* Set ARCHIVE for writing, then compressing an archive. */
pid_t
sys_child_open_for_compress (void)
{
int parent_pipe[2];
int child_pipe[2];
pid_t grandchild_pid;
pid_t child_pid;
xpipe (parent_pipe);
child_pid = xfork ();
if (child_pid > 0)
{
/* The parent tar is still here! Just clean up. */
archive = parent_pipe[PWRITE];
xclose (parent_pipe[PREAD]);
return child_pid;
}
/* The new born child tar is here! */
set_program_name (_("tar (child)"));
signal (SIGPIPE, SIG_DFL);
xdup2 (parent_pipe[PREAD], STDIN_FILENO);
xclose (parent_pipe[PWRITE]);
/* Check if we need a grandchild tar. This happens only if either:
a) the file is to be accessed by rmt: compressor doesn't know how;
b) the file is not a plain file. */
if (!_remdev (archive_name_array[0])
&& is_regular_file (archive_name_array[0]))
{
if (backup_option)
maybe_backup_file (archive_name_array[0], 1);
/* We don't need a grandchild tar. Open the archive and launch the
compressor. */
if (strcmp (archive_name_array[0], "-"))
{
archive = creat (archive_name_array[0], MODE_RW);
if (archive < 0)
{
int saved_errno = errno;
if (backup_option)
undo_last_backup ();
errno = saved_errno;
open_fatal (archive_name_array[0]);
}
xdup2 (archive, STDOUT_FILENO);
}
priv_set_restore_linkdir ();
xexec (use_compress_program_option);
}
/* We do need a grandchild tar. */
xpipe (child_pipe);
grandchild_pid = xfork ();
if (grandchild_pid == 0)
{
/* The newborn grandchild tar is here! Launch the compressor. */
set_program_name (_("tar (grandchild)"));
xdup2 (child_pipe[PWRITE], STDOUT_FILENO);
xclose (child_pipe[PREAD]);
priv_set_restore_linkdir ();
xexec (use_compress_program_option);
}
/* The child tar is still here! */
/* Prepare for reblocking the data from the compressor into the archive. */
xdup2 (child_pipe[PREAD], STDIN_FILENO);
xclose (child_pipe[PWRITE]);
if (strcmp (archive_name_array[0], "-") == 0)
archive = STDOUT_FILENO;
else
{
archive = rmtcreat (archive_name_array[0], MODE_RW, rsh_command_option);
if (archive < 0)
open_fatal (archive_name_array[0]);
}
/* Let's read out of the stdin pipe and write an archive. */
while (1)
{
size_t status = 0;
char *cursor;
size_t length;
/* Assemble a record. */
for (length = 0, cursor = record_start->buffer;
length < record_size;
length += status, cursor += status)
{
size_t size = record_size - length;
status = safe_read (STDIN_FILENO, cursor, size);
if (status == SAFE_READ_ERROR)
read_fatal (use_compress_program_option);
if (status == 0)
break;
}
/* Copy the record. */
if (status == 0)
{
/* We hit the end of the file. Write last record at
full length, as the only role of the grandchild is
doing proper reblocking. */
if (length > 0)
{
memset (record_start->buffer + length, 0, record_size - length);
status = sys_write_archive_buffer ();
if (status != record_size)
archive_write_error (status);
}
/* There is nothing else to read, break out. */
break;
}
status = sys_write_archive_buffer ();
if (status != record_size)
archive_write_error (status);
}
wait_for_grandchild (grandchild_pid);
}
