I was recently helping to debug a problem with an application getting bad file descriptor errors when run from a shell wrapper script. The cause was that the parent process left fildes 255 open for the child process, but the bash wrapper script was causing fildes 255 to be closed.
Looking at open_shell_script() in shell.c and move_to_high_fd() in general.c, I find that the code will force the use of fildes 255, (HIGH_FD_MAX), for reading the shell script when getdtablesize() reports that the maximum allowed file descriptor value is greater than 255. In this particular case the maximum file descriptor value was 1023, which would have stayed out of the way of the application's use. Does HIGH_FD_MAX need to be so low? (OK. 255 isn't _REALLY_ low.) Are there negative consequences for using a higher file descriptor when getdtablesize() reports that they are allowed? -- Mike Stroyan, [EMAIL PROTECTED] _______________________________________________ Bug-bash mailing list Bug-bash@gnu.org http://lists.gnu.org/mailman/listinfo/bug-bash
