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e1ef314121
freebsd-dev/bin/sh
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Jilles Tjoelker e1ef314121 Fix some cases where file descriptors from redirections leak to programs. 
- Redirecting fds that were not open before kept two copies of the
  redirected file.
    sh -c '{ :; } 7>/dev/null; fstat -p $$; true'
    (both fd 7 and 10 remained open)
- File descriptors used to restore things after redirection were not
  set close-on-exec, instead they were explicitly closed before executing
  a program normally and before executing a shell procedure. The latter
  must remain but the former is replaced by close-on-exec.
    sh -c 'exec 7</; { exec fstat -p $$; } 7>/dev/null; true'
    (fd 10 remained open)

The examples above are simpler than the testsuite because I do not want to
use fstat or procstat in the testsuite.
2009-11-29 22:33:59 +00:00
..
bltin
funcs
alias.c be more type correct and align local ckmalloc() with its underlying malloc(3) by using a "size_t" instead of an "int" argument 2009-06-01 10:50:17 +00:00
alias.h
arith_lex.l sh: Fix memory leak when using a variable in arithmetic like $((x)). 2009-11-05 20:44:39 +00:00
arith.h - Fix bugs where the value of arithmetic expansion$((...)) was trucated 2008-04-27 20:46:45 +00:00
arith.y - Fix bugs where the value of arithmetic expansion$((...)) was trucated 2008-04-27 20:46:45 +00:00
builtins.def Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 2006-04-02 18:43:33 +00:00
cd.c Handle current work directories of arbitrary length. The argument to cd 2009-11-21 14:53:22 +00:00
cd.h
error.c Fix various things about SIGINT handling: 2009-11-22 18:23:30 +00:00
error.h Fix various things about SIGINT handling: 2009-11-22 18:23:30 +00:00
eval.c Fix some cases where file descriptors from redirections leak to programs. 2009-11-29 22:33:59 +00:00
eval.h Avoid leaving unnecessary waiting shells in many forms of sh -c COMMAND. 2009-06-13 21:17:45 +00:00
exec.c sh: Send the "xyz: not found" message to redirected fd 2. 2009-10-06 22:00:14 +00:00
exec.h sh: Fix crash when undefining or redefining a currently executing function. 2009-08-23 21:09:46 +00:00
expand.c sh: Exempt $@ and $* from set -u 2009-10-24 21:20:04 +00:00
expand.h
histedit.c sh: Some changes to stderr flushing: 2009-11-21 14:28:32 +00:00
init.h
input.c sh: Ensure the same command input file is on top after executing a builtin. 2009-11-22 14:04:20 +00:00
input.h sh: Ensure the same command input file is on top after executing a builtin. 2009-11-22 14:04:20 +00:00
jobs.c sh: Some changes to stderr flushing: 2009-11-21 14:28:32 +00:00
jobs.h Add the POSIX option -p to the jobs builtin command. It prints the PID of the 2006-10-07 16:51:16 +00:00
mail.c
mail.h
main.c sh: Some changes to stderr flushing: 2009-11-21 14:28:32 +00:00
main.h
Makefile Reduce the WARNS level to avoid a compiler warning about a variable 2007-11-18 01:53:07 +00:00
memalloc.c be more type correct and align local ckmalloc() with its underlying malloc(3) by using a "size_t" instead of an "int" argument 2009-06-01 10:50:17 +00:00
memalloc.h be more type correct and align local ckmalloc() with its underlying malloc(3) by using a "size_t" instead of an "int" argument 2009-06-01 10:50:17 +00:00
miscbltin.c Usermode portion of the support for swap allocation accounting: 2009-06-23 20:57:27 +00:00
mkbuiltins Use -s to flag POSIX's "special built-in" utilities in builtins.def. Add a 2006-04-02 18:43:33 +00:00
mkinit.c be more type correct and align local ckmalloc() with its underlying malloc(3) by using a "size_t" instead of an "int" argument 2009-06-01 10:50:17 +00:00
mknodes.c sh: Fix crash with empty functions (f() { }) introduced in r196483 2009-08-28 22:41:25 +00:00
mksyntax.c use explicit 'unsigned int' instead of just the implicit-style 'unsigned' to make linting tools (e.g. FlexeLint) happy, too 2009-06-01 11:38:38 +00:00
mktokens
myhistedit.h
mystring.c
mystring.h
nodes.c.pat sh: Fix crash with empty functions (f() { }) introduced in r196483 2009-08-28 22:41:25 +00:00
nodetypes
options.c Fix a bug in r177497 which caused the getopts state to be reset when 'set' 2008-08-27 20:16:06 +00:00
options.h
output.c sh: Some changes to stderr flushing: 2009-11-21 14:28:32 +00:00
output.h sh: Some changes to stderr flushing: 2009-11-21 14:28:32 +00:00
parser.c Fix various things about SIGINT handling: 2009-11-22 18:23:30 +00:00
parser.h Expand $LINENO to the current line number. This is required by SUSv3's "User 2008-05-15 19:55:27 +00:00
redir.c Fix some cases where file descriptors from redirections leak to programs. 2009-11-29 22:33:59 +00:00
redir.h
sh.1 sh: Exempt $@ and $* from set -u 2009-10-24 21:20:04 +00:00
shell.h - Fix bugs where the value of arithmetic expansion$((...)) was trucated 2008-04-27 20:46:45 +00:00
show.c Output something reasonable for regular and expanded here-documents. 2006-04-14 13:59:03 +00:00
show.h
TOUR Correct assorted grammos and typos. 2006-04-16 11:54:01 +00:00
trap.c trap: do not consider a bad signal name a fatal error. 2009-11-21 20:44:34 +00:00
trap.h Don't skip forking for an external command if any traps are active. 2009-06-13 21:10:41 +00:00
var.c Fix various things about SIGINT handling: 2009-11-22 18:23:30 +00:00
var.h Implement the PS4 variable which is defined by the POSIX User Portability 2006-06-15 07:00:49 +00:00