int
restore_cwd (const struct saved_cwd *cwd)
{
if (0 <= cwd->desc)
return fchdir (cwd->desc);
else
return chdir_long (cwd->name);
}
int main(int argc, char *argv[])
{
char *line = NULL;
size_t n = 0;
int len;
program_name = argv[0];
printf("Debug message: running from path '%s' with '%i' args.\n",
program_name, argc);
atexit(close_stdout);
printf("Enter directory to change to> ");
len = getline(&line, &n, stdin);
if (len < 0) {
int saved_errno = errno;
if (feof(stdin)) {
exit(0);
}
error(EXIT_FAILURE, saved_errno, "reading standard input");
} else if (len == 0) {
exit(0);
} else if (len > 0) {
printf("line of input has length '%i'\n", len);
}
/* NUL-terminate: */
if (line[(len - 1)] == '\n') {
printf("NUL-terminating line of input...\n");
line[(len - 1)] = '\0';
} else {
printf("No need to NUL-terminate input.\n");
}
if (chdir_long(line) != 0) {
error(EXIT_FAILURE, errno, "chdir_long failed: %s", line);
} else {
printf("chdir_long() returned 0; that means that it should have been successful.\n");
}
if (argc <= 1) {
int pwd_retval;
/* Using 'pwd' here makes sense only if it is a robust implementation,
* like the one in coreutils after the 2004-04-19 changes. */
char const *cmd = "pwd";
printf("going to execute '%s'...\n", cmd);
pwd_retval = execlp(cmd, (char *)NULL);
printf("executing '%s' returned '%i'\n", cmd, pwd_retval);
error(EXIT_FAILURE, errno, "%s", cmd);
}
fclose(stdin);
fclose(stderr);
exit(EXIT_SUCCESS);
}
int
main (int argc, char *argv[])
{
char *line = NULL;
size_t n = 0;
int len;
program_name = argv[0];
atexit (close_stdout);
len = getline (&line, &n, stdin);
if (len < 0)
{
int saved_errno = errno;
if (feof (stdin))
exit (0);
error (EXIT_FAILURE, saved_errno,
"reading standard input");
}
else if (len == 0)
exit (0);
if (line[len-1] == '\n')
line[len-1] = '\0';
if (chdir_long (line) != 0)
error (EXIT_FAILURE, errno,
"chdir_long failed: %s", line);
if (argc <= 1)
{
/* Using `pwd' here makes sense only if it is a robust implementation,
like the one in coreutils after the 2004-04-19 changes. */
char const *cmd = "pwd";
execlp (cmd, (char *) NULL);
error (EXIT_FAILURE, errno, "%s", cmd);
}
fclose (stdin);
fclose (stderr);
exit (EXIT_SUCCESS);
}
