One larger side effect of not supporting more fds is that the use of multi volume info script in tar fails (as in their example)
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to dash in Ubuntu. https://bugs.launchpad.net/bugs/249620 Title: dash does not support multi-digit file descriptors Status in dash package in Ubuntu: Confirmed Status in dash package in Debian: Confirmed Bug description: Binary package hint: dash Found in dash version 0.5.4-8ubuntu1. The POSIX specification for "Shell Command Language" at http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_07 says that multi-digit file descriptors are allowed, i.e. 10, 20, 25, etc.. The relevant part of the specification is "The redirection operator: [n]>&word shall duplicate one output file descriptor from another, or shall close one. If word evaluates to one or more digits, the file descriptor denoted by n, or standard output if n is not specified, shall be made to be a copy of the file descriptor denoted by word ..." Dash seems to only support single digit fds: kstemen@kyle-vmserver:~$ sh 3>3.txt 9>9.txt 10>10.txt 11>11.txt $ ls /proc/$$/fd 0 1 10 11 12 2 3 9 $ echo test >&3 $ echo test >&9 $ echo test >&10 sh: Syntax error: Bad fd number $ echo test >&11 sh: Syntax error: Bad fd number $ This seems to be caused by fixredir in parser.c: void fixredir(union node *n, const char *text, int err) { TRACE(("Fix redir %s %d\n", text, err)); if (!err) n->ndup.vname = NULL; if (is_digit(text[0]) && text[1] == '\0') n->ndup.dupfd = digit_val(text[0]); else if (text[0] == '-' && text[1] == '\0') n->ndup.dupfd = -1; else { if (err) synerror("Bad fd number"); else n->ndup.vname = makename(); } } To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dash/+bug/249620/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
