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Bash-4.2 distribution sources and documentation

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This commit is contained in:
Chet Ramey 2011-11-22 19:11:26 -05:00
commit 495aee441b
341 changed files with 108751 additions and 36060 deletions
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30
shell.c
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@ -1,6 +1,6 @@
/* shell.c -- GNU's idea of the POSIX shell specification. */
/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
/* Copyright (C) 1987-2010 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
@ -226,7 +226,6 @@ int posixly_correct = 1; /* Non-zero means posix.2 superset. */
int posixly_correct = 0; /* Non-zero means posix.2 superset. */
#endif
/* Some long-winded argument names. These are obviously new. */
#define Int 1
#define Charp 2
@ -271,6 +270,8 @@ int subshell_argc;
char **subshell_argv;
char **subshell_envp;
char *exec_argv0;
#if defined (BUFFERED_INPUT)
/* The file descriptor from which the shell is reading input. */
int default_buffered_input = -1;
@ -525,21 +526,20 @@ main (argc, argv, env)
else
init_noninteractive ();
#define CLOSE_FDS_AT_LOGIN
#if defined (CLOSE_FDS_AT_LOGIN)
/*
* Some systems have the bad habit of starting login shells with lots of open
* file descriptors. For instance, most systems that have picked up the
* pre-4.0 Sun YP code leave a file descriptor open each time you call one
* of the getpw* functions, and it's set to be open across execs. That
* means one for login, one for xterm, one for shelltool, etc.
* means one for login, one for xterm, one for shelltool, etc. There are
* also systems that open persistent FDs to other agents or files as part
* of process startup; these need to be set to be close-on-exec.
*/
if (login_shell && interactive_shell)
{
for (i = 3; i < 20; i++)
close (i);
SET_CLOSE_ON_EXEC (i);
}
#endif /* CLOSE_FDS_AT_LOGIN */
/* If we're in a strict Posix.2 mode, turn on interactive comments,
alias expansion in non-interactive shells, and other Posix.2 things. */
@ -1415,7 +1415,12 @@ open_shell_script (script_name)
}
free (dollar_vars[0]);
dollar_vars[0] = savestring (script_name);
dollar_vars[0] = exec_argv0 ? savestring (exec_argv0) : savestring (script_name);
if (exec_argv0)
{
free (exec_argv0);
exec_argv0 = (char *)NULL;
}
#if defined (ARRAY_VARS)
GET_ARRAY_FROM_VAR ("FUNCNAME", funcname_v, funcname_a);
@ -1471,10 +1476,6 @@ open_shell_script (script_name)
not match with ours. */
fd = move_to_high_fd (fd, 1, -1);
#if defined (__CYGWIN__) && defined (O_TEXT)
setmode (fd, O_TEXT);
#endif
#if defined (BUFFERED_INPUT)
default_buffered_input = fd;
SET_CLOSE_ON_EXEC (default_buffered_input);
@ -1719,8 +1720,9 @@ shell_initialize ()
initialize_flags ();
/* Initialize the shell options. Don't import the shell options
from the environment variable $SHELLOPTS if we are running in
privileged or restricted mode or if the shell is running setuid. */
from the environment variables $SHELLOPTS or $BASHOPTS if we are
running in privileged or restricted mode or if the shell is running
setuid. */
#if defined (RESTRICTED_SHELL)
initialize_shell_options (privileged_mode||restricted||running_setuid);
initialize_bashopts (privileged_mode||restricted||running_setuid);