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Bash-4.4 distribution sources and documentation

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This commit is contained in:
Chet Ramey
2016-09-15 16:59:08 -04:00
parent 30a978b7d8
commit a0c0a00fc4
588 changed files with 130746 additions and 80164 deletions
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examples/functions/dirstack
+160
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@@ -0,0 +1,160 @@
#!/bin/bash
# @(#) dirstack
###
# Another implementation of the directory manipulation functions
# published in the Bolsky & Korn book : "The new Korn shell" :
# cd, to change current directory
# d, to display the stack content
# Eric Sanchis (eric.sanchis@iut-rodez.fr), 2012
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
###
shopt -s expand_aliases
shopt -s extglob
shopt -s cdable_vars
alias integer='declare -i'
integer MAX=32
integer INDMAX=MAX-1
integer INDTOP=0
unalias cd 2>/dev/null
alias cd=cdir
unset tab
tab[INDTOP]="$(pwd)"
function cdir
{
local -i ind
local dir
dir="${1:-$HOME}"
case "$dir" in
- ) # cd - => equivalent to : cd -1
ind=INDTOP-1
cd_by_number $ind
;;
-+([[:digit:]]) ) # cd -n
ind=$INDTOP-${dir#-}
cd_by_number $ind
;;
*) # cd ~ or cd dir_name
cd_by_name "$dir"
esac
}
function cd_by_number
{
local -i k=$1
local -i j
local dirtmp
if (( k < 0 ))
then
echo Impossible to change directory >&2
return 1
else
dirtmp="${tab[k]}"
j=k+1
while (( j <= INDTOP ))
do
tab[j-1]="${tab[j]}"
j=j+1
done
tab[INDTOP]="$dirtmp"
\cd "${tab[INDTOP]}"
fi
}
function cd_by_name
{
local -i i
local rep
rep=$( \cd "$1" &>/dev/null && pwd)
if [[ -z "$rep" ]]
then
echo cd : "$1" unknown >&2
return 1
fi
i=$INDTOP
while (( i >= 0 ))
do
if [[ "${tab[i]}" == "$rep" ]]
then break
fi
i=i-1
done
if (( i == INDTOP ))
then # cd -0 => we do nothing !
return 0
elif (( i == -1 ))
then # the directory isn't in the stack
if (( INDTOP == INDMAX ))
then # the stack is FULL
# the oldest directory is removed
local -i m
m=1
while (( m <= INDMAX ))
do
tab[m-1]="${tab[m]}"
m=m+1
done
else # the new directory is added to the top of the stack
INDTOP=INDTOP+1
fi
tab[INDTOP]="$rep"
\cd "${tab[INDTOP]}"
return 0
else # the directory is already in the stack
# $i gives its index
cd_by_number $i
fi
}
function d # display the directory stack
{
local -i i
local rep
i=0
while (( $i <= $INDTOP ))
do
rep="${tab[INDTOP-i]#$HOME/}"
case "$rep" in
$HOME) rep="~" ;;
/* ) : ;;
* ) rep="~/$rep"
esac
echo "$i ) $rep"
i=i+1
done
}
examples/loadables/Makefile.in
+57 -9
View File
@@ -1,7 +1,7 @@
#
# Simple makefile for the sample loadable builtins
#
# Copyright (C) 1996-2009 Free Software Foundation, Inc.
# Copyright (C) 1996-2015 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
@@ -17,6 +17,9 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
PACKAGE = @PACKAGE_NAME@
VERSION = @PACKAGE_VERSION@
# Include some boilerplate Gnu makefile definitions.
prefix = @prefix@
@@ -28,10 +31,22 @@ includedir = @includedir@
datarootdir = @datarootdir@
loadablesdir = @loadablesdir@
headersdir = @headersdir@
topdir = @top_srcdir@
BUILD_DIR = @BUILD_DIR@
srcdir = @srcdir@
VPATH = .:@srcdir@
VPATH = @srcdir@
# Support an alternate destination root directory for package building
DESTDIR =
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
INSTALL_DATA = @INSTALL_DATA@
INSTALLMODE= -m 0755
@SET_MAKE@
CC = @CC@
@@ -52,6 +67,8 @@ CPPFLAGS = @CPPFLAGS@
BASHINCDIR = ${topdir}/include
SUPPORT_SRC = $(topdir)/support/
LIBBUILD = ${BUILD_DIR}/lib
INTL_LIBSRC = ${topdir}/lib/intl
@@ -75,7 +92,7 @@ SHOBJ_XLDFLAGS = @SHOBJ_XLDFLAGS@
SHOBJ_LIBS = @SHOBJ_LIBS@
SHOBJ_STATUS = @SHOBJ_STATUS@
INC = -I. -I.. -I$(topdir) -I$(topdir)/lib -I$(topdir)/builtins \
INC = -I. -I.. -I$(topdir) -I$(topdir)/lib -I$(topdir)/builtins -I${srcdir} \
-I$(BASHINCDIR) -I$(BUILD_DIR) -I$(LIBBUILD) \
-I$(BUILD_DIR)/builtins $(INTL_INC)
@@ -83,10 +100,10 @@ INC = -I. -I.. -I$(topdir) -I$(topdir)/lib -I$(topdir)/builtins \
$(SHOBJ_CC) $(SHOBJ_CFLAGS) $(CCFLAGS) $(INC) -c -o $@ $<
ALLPROG = print truefalse sleep pushd finfo logname basename dirname \
ALLPROG = print truefalse sleep finfo logname basename dirname \
tty pathchk tee head mkdir rmdir printenv id whoami \
uname sync push ln unlink realpath strftime mypid
OTHERPROG = necho hello cat
uname sync push ln unlink realpath strftime mypid setpgid
OTHERPROG = necho hello cat pushd
all: $(SHOBJ_STATUS)
@@ -98,7 +115,7 @@ unsupported:
@echo "${topdir}/support/shobj-conf script."
@echo "If your operating system provides facilities for dynamic"
@echo "loading of shared objects using the dlopen(3) interface,"
@echo "please update the script and re-run configure.
@echo "please update the script and re-run configure."
@echo "Please send the changes you made to bash-maintainers@gnu.org"
@echo "for inclusion in future bash releases."
@@ -185,6 +202,10 @@ strftime: strftime.o
mypid: mypid.o
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ mypid.o $(SHOBJ_LIBS)
setpgid: setpgid.o
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ setpgid.o $(SHOBJ_LIBS)
# pushd is a special case. We use the same source that the builtin version
# uses, with special compilation options.
#
@@ -207,9 +228,36 @@ mostlyclean: clean
-( cd perl && ${MAKE} ${MFLAGS} $@ )
distclean maintainer-clean: clean
$(RM) Makefile pushd.c
$(RM) Makefile Makefile.inc pushd.c
-( cd perl && ${MAKE} ${MFLAGS} $@ )
installdirs:
@${SHELL} $(SUPPORT_SRC)mkinstalldirs $(DESTDIR)$(loadablesdir)
install-dev: installdirs
@$(INSTALL_DATA) Makefile.inc $(DESTDIR)$(loadablesdir)/Makefile.inc
@( cd $(BUILD_DIR) && ${MAKE} ${MFLAGS} DESTDIR="$(DESTDIR)" install-headers)
install-supported: all installdirs install-dev
@echo installing example loadable builtins in $(DESTDIR)${loadablesdir}
@for prog in ${ALLPROG}; do \
echo $$prog ; \
$(INSTALL_PROGRAM) $(INSTALLMODE) $$prog $(DESTDIR)$(loadablesdir)/$$prog ;\
done
uninstall-dev:
-$(RM) $(DESTDIR)$(loadablesdir)/Makefile.inc
-( cd $(BUILD_DIR) && ${MAKE} ${MFLAGS} DESTDIR="$(DESTDIR)" uninstall-headers)
uninstall-supported: uninstall-dev
-( cd $(DESTDIR)${loadablesdir} && $(RM) ${ALLPROG} )
install-unsupported:
uninstall-unsupported:
install: install-$(SHOBJ_STATUS)
uninstall: uninstall-$(SHOBJ_STATUS)
print.o: print.c
truefalse.o: truefalse.c
sleep.o: sleep.c
@@ -234,4 +282,4 @@ push.o: push.c
mkdir.o: mkdir.c
realpath.o: realpath.c
strftime.o: strftime.c
mypid.o: mypid.c
setpgid.o: setpgid.c
examples/loadables/Makefile.inc.in
+108
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@@ -0,0 +1,108 @@
#
# Sample makefile for bash loadable builtin development
#
# Copyright (C) 2015 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
PACKAGE = @PACKAGE_NAME@
VERSION = @PACKAGE_VERSION@
PACKAGE_NAME = @PACKAGE_NAME@
PACKAGE_VERSION = @PACKAGE_VERSION@
# Include some boilerplate Gnu makefile definitions.
prefix = @prefix@
exec_prefix = @exec_prefix@
bindir = @bindir@
libdir = @libdir@
infodir = @infodir@
includedir = @includedir@
datarootdir = @datarootdir@
loadablesdir = @loadablesdir@
headersdir = @headersdir@
topdir = @top_srcdir@
BUILD_DIR = @BUILD_DIR@
srcdir = @srcdir@
VPATH = @srcdir@
# Support an alternate destination root directory for package building
DESTDIR =
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_SCRIPT = @INSTALL_SCRIPT@
INSTALL_DATA = @INSTALL_DATA@
INSTALLMODE= -m 0755
@SET_MAKE@
CC = @CC@
RM = rm -f
SHELL = @MAKE_SHELL@
host_os = @host_os@
host_cpu = @host_cpu@
host_vendor = @host_vendor@
CFLAGS = @CFLAGS@
LOCAL_CFLAGS = @LOCAL_CFLAGS@
DEFS = @DEFS@
LOCAL_DEFS = @LOCAL_DEFS@
CPPFLAGS = @CPPFLAGS@
BASHINCDIR = ${topdir}/include
SUPPORT_SRC = $(topdir)/support/
LIBBUILD = ${BUILD_DIR}/lib
INTL_LIBSRC = ${topdir}/lib/intl
INTL_BUILDDIR = ${LIBBUILD}/intl
INTL_INC = @INTL_INC@
LIBINTL_H = @LIBINTL_H@
CCFLAGS = $(DEFS) $(LOCAL_DEFS) $(LOCAL_CFLAGS) $(CFLAGS)
#
# These values are generated for configure by ${topdir}/support/shobj-conf.
# If your system is not supported by that script, but includes facilities for
# dynamic loading of shared objects, please update the script and send the
# changes to bash-maintainers@gnu.org.
#
SHOBJ_CC = @SHOBJ_CC@
SHOBJ_CFLAGS = @SHOBJ_CFLAGS@
SHOBJ_LD = @SHOBJ_LD@
SHOBJ_LDFLAGS = @SHOBJ_LDFLAGS@ @LDFLAGS@
SHOBJ_XLDFLAGS = @SHOBJ_XLDFLAGS@
SHOBJ_LIBS = @SHOBJ_LIBS@
SHOBJ_STATUS = @SHOBJ_STATUS@
INC = -I$(headersdir) -I$(headersdir)/include -I$(headersdir)/builtins
.c.o:
$(SHOBJ_CC) $(SHOBJ_CFLAGS) $(CCFLAGS) $(INC) -c -o $@ $<
all: example
example: example.o
$(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ example.o $(SHOBJ_LIBS)
example.o: example.c
examples/loadables/README
+2 -3
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@@ -34,18 +34,17 @@ new loadable builtins.
basename.c Return non-directory portion of pathname.
cat.c cat(1) replacement with no options - the way cat was intended.
cut.c cut(1) replacement.
dirname.c Return directory portion of pathname.
finfo.c Print file info.
getconf.c POSIX.2 getconf utility.
getconf.h Replacement definitions for ones the system doesn't provide.
head.c Copy first part of files.
hello.c Obligatory "Hello World" / sample loadable.
id.c POSIX.2 user identity.
ln.c Make links.
loadables.h Start at a file loadable builtins can include for shell definitions
logname.c Print login name of current user.
Makefile.in Simple makefile for the sample loadable builtins.
mkdir.c Make directories.
mypid.c Add $MYPID variable, demonstrate use of unload hook function
necho.c echo without options or argument interpretation.
pathchk.c Check pathnames for validity and portability.
print.c Loadable ksh-93 style print builtin.
examples/loadables/basename.c
+1
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@@ -31,6 +31,7 @@
#include "shell.h"
#include "common.h"
int
basename_builtin (list)
WORD_LIST *list;
{
examples/loadables/dirname.c
+1
View File
@@ -31,6 +31,7 @@
#include "shell.h"
#include "common.h"
int
dirname_builtin (list)
WORD_LIST *list;
{
examples/loadables/finfo.c
+7 -4
View File
@@ -39,6 +39,7 @@
#include "shell.h"
#include "builtins.h"
#include "common.h"
#include "getopt.h"
#ifndef errno
extern int errno;
@@ -46,8 +47,10 @@ extern int errno;
extern char **make_builtin_argv ();
static void perms();
static int printst();
static int printsome();
static void printmode();
static int printfinfo();
static int finfo_main();
@@ -192,7 +195,7 @@ int m;
return (m & (S_IRWXU|S_IRWXG|S_IRWXO|S_ISUID|S_ISGID));
}
static int
static void
perms(m)
int m;
{
@@ -236,7 +239,7 @@ int m;
printf ("u=%s,g=%s,o=%s", ubits, gbits, obits);
}
static int
static void
printmode(mode)
int mode;
{
@@ -262,7 +265,7 @@ int mode;
printf("\n");
}
static int
static int
printst(st)
struct stat *st;
{
@@ -459,7 +462,7 @@ char **argv;
void
builtin_usage()
{
fprintf(stderr, "%s: usage: %s [-%s] [file ...]\n", prog, OPTIONS);
fprintf(stderr, "%s: usage: %s [-%s] [file ...]\n", prog, prog, OPTIONS);
}
#ifndef HAVE_STRERROR
examples/loadables/head.c
+2
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@@ -88,8 +88,10 @@ file_head (fp, cnt)
break;
}
}
return (EXECUTION_SUCCESS);
}
int
head_builtin (list)
WORD_LIST *list;
{
examples/loadables/hello.c
+18 -4
View File
@@ -29,9 +29,7 @@
#include <stdio.h>
#include "builtins.h"
#include "shell.h"
#include "bashgetopt.h"
#include "loadables.h"
/* A builtin `xxx' is normally implemented with an `xxx_builtin' function.
If you're converting a command that uses the normal Unix argc/argv
@@ -58,6 +56,23 @@ hello_builtin (list)
return (EXECUTION_SUCCESS);
}
int
hello_builtin_load (s)
char *s;
{
printf ("hello builtin loaded\n");
fflush (stdout);
return (1);
}
void
hello_builtin_unload (s)
char *s;
{
printf ("hello builtin unloaded\n");
fflush (stdout);
}
/* An array of strings forming the `long' documentation for a builtin xxx,
which is printed by `help xxx'. It must end with a NULL. By convention,
the first line is a short description. */
@@ -79,4 +94,3 @@ struct builtin hello_struct = {
"hello", /* usage synopsis; becomes short_doc */
0 /* reserved for internal use */
};
examples/loadables/ln.c
+12 -3
View File
@@ -46,10 +46,12 @@ typedef int unix_link_syscall_t __P((const char *, const char *));
#define LN_SYMLINK 0x01
#define LN_UNLINK 0x02
#define LN_NOFOLLOW 0x04
static unix_link_syscall_t *linkfn;
static int dolink ();
int
ln_builtin (list)
WORD_LIST *list;
{
@@ -70,6 +72,10 @@ ln_builtin (list)
case 's':
flags |= LN_SYMLINK;
break;
case 'h':
case 'n':
flags |= LN_NOFOLLOW;
break;
default:
builtin_usage ();
return (EX_USAGE);
@@ -138,8 +144,10 @@ mkdirpath (dir, file)
#if defined (HAVE_LSTAT)
# define LSTAT lstat
# define LSTAT_OR_STAT_IF(c, f, b) ((c) ? lstat((f), (b)) : stat((f), (b)))
#else
# define LSTAT stat
# define LSTAT_OR_STAT_IF(c, f, b) (stat((f), (b)))
#endif
static int
@@ -171,7 +179,7 @@ dolink (src, dst, flags)
/* If the destination is a directory, create the final filename by appending
the basename of the source to the destination. */
dst_path = 0;
if ((stat (dst, &dsb) == 0) && S_ISDIR (dsb.st_mode))
if ((LSTAT_OR_STAT_IF((flags & LN_NOFOLLOW), dst, &dsb) == 0) && S_ISDIR (dsb.st_mode))
{
if ((p = strrchr (src, '/')) == 0)
p = src;
@@ -210,7 +218,8 @@ char *ln_doc[] = {
"Create a new directory entry with the same modes as the original",
"file. The -f option means to unlink any existing file, permitting",
"the link to occur. The -s option means to create a symbolic link.",
"By default, ln makes hard links.",
"By default, ln makes hard links. Specifying -n or its synonym -h",
"causes ln to not resolve symlinks in the target file or directory.",
(char *)NULL
};
@@ -221,6 +230,6 @@ struct builtin ln_struct = {
ln_builtin, /* function implementing the builtin */
BUILTIN_ENABLED, /* initial flags for builtin */
ln_doc, /* array of long documentation strings. */
"ln [-fs] file1 [file2] OR ln [-fs] file ... directory", /* usage synopsis; becomes short_doc */
"ln [-fhns] file1 [file2] OR ln [-fhns] file ... directory", /* usage synopsis; becomes short_doc */
0 /* reserved for internal use */
};
examples/loadables/loadables.h
+34
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@@ -0,0 +1,34 @@
/* loadables.h -- Include files needed by all loadable builtins */
/* Copyright (C) 2015 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Bash is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Bash. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __LOADABLES_H_
#define __LOADABLES_H_
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "builtins.h"
#include "shell.h"
#include "bashgetopt.h"
#include "common.h"
#endif
examples/loadables/logname.c
+1
View File
@@ -35,6 +35,7 @@
extern int errno;
#endif
int
logname_builtin (list)
WORD_LIST *list;
{
examples/loadables/mkdir.c
+1 -3
View File
@@ -52,7 +52,7 @@ int
mkdir_builtin (list)
WORD_LIST *list;
{
int opt, pflag, omode, rval, octal, nmode, parent_mode, um;
int opt, pflag, omode, rval, nmode, parent_mode;
char *mode;
WORD_LIST *l;
@@ -90,7 +90,6 @@ mkdir_builtin (list)
builtin_error ("invalid file mode: %s", mode);
return (EXECUTION_FAILURE);
}
octal = 1;
}
else if (mode)
{
@@ -101,7 +100,6 @@ mkdir_builtin (list)
builtin_error ("invalid file mode: %s", mode);
return (EXECUTION_FAILURE);
}
octal = 0;
}
/* Make the new mode */
examples/loadables/mypid.c
+17 -2
View File
@@ -5,7 +5,13 @@
* Then, from within bash, enable -f ./mypid enable_mypid, where ./mypid
* is the binary obtained from running make. Hereafter, `${MYPID}'
* is a shell builtin variable.
*
* This defines an unload hook function that is called when the builtin is
* deleted with enable -d that will unbind the MYPID variable so future
* references to it do not attempt to access memory that is no longer part
* of this process's address space.
*/
#include <config.h>
#include <stdio.h>
#include <errno.h>
@@ -17,8 +23,11 @@
#define INIT_DYNAMIC_VAR(var, val, gfunc, afunc) \
do \
{ SHELL_VAR *v = bind_variable (var, (val), 0); \
v->dynamic_value = gfunc; \
v->assign_func = afunc; \
if (v) \
{ \
v->dynamic_value = gfunc; \
v->assign_func = afunc; \
} \
} \
while (0)
@@ -56,6 +65,12 @@ enable_mypid_builtin(WORD_LIST *list)
return 0;
}
void
enable_mypid_builtin_unload (char *s)
{
unbind_variable ("MYPID");
}
char const *enable_mypid_doc[] = {
"Enable $MYPID.",
"",
examples/loadables/necho.c
+1
View File
@@ -25,6 +25,7 @@
#include "builtins.h"
#include "shell.h"
int
necho_builtin (list)
WORD_LIST *list;
{
examples/loadables/pathchk.c
+4 -3
View File
@@ -98,6 +98,7 @@ extern char *strerror ();
static int validate_path ();
int
pathchk_builtin (list)
WORD_LIST *list;
{
@@ -323,7 +324,7 @@ validate_path (path, portability)
if (!last_elem)
{
exists = dir_ok (path);
if (dir_ok == 0)
if (exists == 0)
{
free (parent);
return 1;
@@ -370,8 +371,8 @@ validate_path (path, portability)
free (parent);
if (strlen (path) > path_max)
{
builtin_error ("path `%s' has length %d; exceeds limit of %d",
path, strlen (path), path_max);
builtin_error ("path `%s' has length %lu; exceeds limit of %d",
path, (unsigned long)strlen (path), path_max);
return 1;
}
examples/loadables/perl/Makefile.in
+1 -1
View File
@@ -32,7 +32,7 @@ datarootdir = @datarootdir@
topdir = @top_srcdir@
BUILD_DIR = @BUILD_DIR@
srcdir = @srcdir@
VPATH = .:@srcdir@
VPATH = @srcdir@
@SET_MAKE@
CC = @CC@
examples/loadables/realpath.c
+1
View File
@@ -60,6 +60,7 @@ extern int errno;
extern char *sh_realpath();
int
realpath_builtin(list)
WORD_LIST *list;
{
examples/loadables/rmdir.c
+1
View File
@@ -32,6 +32,7 @@
extern int errno;
#endif
int
rmdir_builtin (list)
WORD_LIST *list;
{
examples/loadables/setpgid.c
+121
View File
@@ -0,0 +1,121 @@
/* setpgid.c: bash loadable wrapper for setpgid system call
An example of how to wrap a system call with a loadable builtin.
Originally contributed by Jason Vas Dias <jason.vas.dias@gmail.com>
Bash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Bash is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Bash. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
#include <errno.h>
#include <string.h>
#include "bashtypes.h"
#include "posixtime.h"
#include <stdio.h>
#include "builtins.h"
#include "shell.h"
#include "common.h"
#include "bashgetopt.h"
#if !defined (_POSIX_VERSION)
# define setpgid(pid, pgrp) setpgrp (pid, pgrp)
#endif
int
setpgid_builtin (list)
WORD_LIST *list;
{
register WORD_LIST *wl;
intmax_t pid_arg, pgid_arg;
pid_t pid, pgid;
char *pidstr, *pgidstr;
wl = list;
pid = pgid = 0;
if (wl == 0 || wl->next == 0)
{
builtin_usage ();
return (EX_USAGE);
}
pidstr = wl->word ? wl->word->word : 0;
pgidstr = wl->next->word ? wl->next->word->word : 0;
if (pidstr == 0 || pgidstr == 0)
{
builtin_usage ();
return (EX_USAGE);
}
if (legal_number (pidstr, &pid_arg) == 0)
{
builtin_error ("%s: pid argument must be numeric", pidstr);
return (EXECUTION_FAILURE);
}
if (pid_arg < 0)
{
builtin_error("%s: negative pid values not allowed", pidstr);
return (EXECUTION_FAILURE);
}
pid = pid_arg;
if (legal_number (pgidstr, &pgid_arg) == 0)
{
builtin_error ("%s: pgrp argument must be numeric", pgidstr);
return (EXECUTION_FAILURE);
}
if (pgid_arg < 0)
{
builtin_error ("%s: negative pgrp values not allowed", pgidstr);
return (EXECUTION_FAILURE);
}
pgid = pgid_arg;
errno = 0;
if (setpgid(pid, pgid) < 0)
{
builtin_error("setpgid failed: %s", strerror (errno));
return (EXECUTION_FAILURE);
}
return (EXECUTION_SUCCESS);
}
const char *setpgid_doc[] = {
"invoke the setpgid(2) system call",
"",
"Arguments:",
" pid : numeric process identifer, >= 0",
" pgrpid: numeric process group identifier, >=0",
"See the setpgid(2) manual page.",
(const char *)NULL
};
struct builtin setpgid_struct = {
"setpgid",
setpgid_builtin,
BUILTIN_ENABLED,
(char **)setpgid_doc,
"setpgid pid pgrpid",
0
};
examples/loadables/sync.c
+1
View File
@@ -28,6 +28,7 @@
#include "shell.h"
#include "bashgetopt.h"
int
sync_builtin (list)
WORD_LIST *list;
{
examples/loadables/tee.c
+1
View File
@@ -60,6 +60,7 @@ extern int interrupt_immediately;
extern char *strerror ();
int
tee_builtin (list)
WORD_LIST *list;
{
examples/loadables/template.c
+18 -3
View File
@@ -11,9 +11,7 @@
#include <stdio.h>
#include <errno.h>
#include "builtins.h"
#include "shell.h"
#include "bashgetopt.h"
#include "loadables.h"
#if !defined (errno)
extern int errno;
@@ -21,6 +19,7 @@ extern int errno;
extern char *strerror ();
int
template_builtin (list)
WORD_LIST *list;
{
@@ -42,6 +41,22 @@ template_builtin (list)
return (rval);
}
/* Called when `template' is enabled and loaded from the shared object. If this
function returns 0, the load fails. */
int
template_builtin_load (name)
char *name;
{
return (1);
}
/* Called when `template' is disabled. */
void
template_builtin_unload (name)
char *name;
{
}
char *template_doc[] = {
"Short description.",
""
examples/loadables/truefalse.c
+2
View File
@@ -25,12 +25,14 @@
#include "builtins.h"
#include "common.h"
int
true_builtin (list)
WORD_LIST *list;
{
return EXECUTION_SUCCESS;
}
int
false_builtin (list)
WORD_LIST *list;
{
examples/loadables/tty.c
+1
View File
@@ -30,6 +30,7 @@
extern char *ttyname ();
int
tty_builtin (list)
WORD_LIST *list;
{
examples/loadables/uname.c
+1
View File
@@ -63,6 +63,7 @@ static void uprint();
static int uname_flags;
int
uname_builtin (list)
WORD_LIST *list;
{
examples/loadables/unlink.c
+1
View File
@@ -38,6 +38,7 @@
extern int errno;
#endif
int
unlink_builtin (list)
WORD_LIST *list;
{
examples/loadables/whoami.c
+1
View File
@@ -28,6 +28,7 @@
#include "bashgetopt.h"
#include "common.h"
int
whoami_builtin (list)
WORD_LIST *list;
{