/* The pipes for sending data to remote tape drives. */
static int to_remote[MAXUNIT][2] = {{-1, -1}, {-1, -1}, {-1, -1}, {-1, -1}};
-char *rmt_command = DEFAULT_RMT_COMMAND;
+char const *rmt_command = DEFAULT_RMT_COMMAND;
/* Temporary variable used by macros in rmt.h. */
-char *rmt_dev_name__;
+char const *rmt_dev_name__;
/* If true, always consider file names to be local, even if they contain
colons */
{
/* Child. */
- close (STDIN_FILENO);
- dup (to_remote[remote_pipe_number][PREAD]);
- close (to_remote[remote_pipe_number][PREAD]);
- close (to_remote[remote_pipe_number][PWRITE]);
-
- close (STDOUT_FILENO);
- dup (from_remote[remote_pipe_number][PWRITE]);
- close (from_remote[remote_pipe_number][PREAD]);
- close (from_remote[remote_pipe_number][PWRITE]);
+ if (dup2 (to_remote[remote_pipe_number][PREAD], STDIN_FILENO) < 0
+ || (to_remote[remote_pipe_number][PREAD] != STDIN_FILENO
+ && close (to_remote[remote_pipe_number][PREAD]) != 0)
+ || (to_remote[remote_pipe_number][PWRITE] != STDIN_FILENO
+ && close (to_remote[remote_pipe_number][PWRITE]) != 0)
+ || dup2 (from_remote[remote_pipe_number][PWRITE], STDOUT_FILENO) < 0
+ || close (from_remote[remote_pipe_number][PREAD]) != 0
+ || close (from_remote[remote_pipe_number][PWRITE]) != 0)
+ error (EXIT_ON_EXEC_ERROR, errno,
+ _("Cannot redirect files for remote shell"));
sys_reset_uid_gid ();