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New command -launch_frontend

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This commit is contained in:
Thomas Schmitt
2012-12-20 20:22:58 +00:00
parent e560c94d98
commit 7aba2e615c
16 changed files with 525 additions and 36 deletions
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28
configure.ac
View File

@ -268,6 +268,32 @@ else
fi
AC_SUBST(EXTF_SUID_DEF)
AC_ARG_ENABLE(launch-frontend,
[ --enable-launch-frontend Enable start of piped frontend program by xorriso, default=yes],
, enable_launch_frontend=yes)
if test x"$enable_launch_frontend" = xyes; then
LFRONT_DEF="-DXorriso_allow_launch_frontenD"
echo "enabled xorriso command -launch_frontend"
else
LFRONT_DEF=
echo "disabled xorriso command -launch_frontend"
fi
AC_SUBST(LFRONT_DEF)
AC_ARG_ENABLE(launch-frontend-setuid,
[ --enable-launch-frontend-setuid Enable start of piped frontend program under setuid, default=no],
, enable_launch_frontend_setuid=no)
if test x$enable_launch_frontend_setuid = xyes; then
LFRONT_SUID_DEF="-DXorriso_allow_extf_suiD"
echo "enabled xorriso command -launch_frontend under setuid"
else
LFRONT_SUID_DEF=
echo "disabled xorriso command -launch_frontend under setuid"
fi
AC_SUBST(LFRONT_SUID_DEF)
AC_ARG_ENABLE(dvd-obs-64k,
[ --enable-dvd-obs-64k 64 KB default size for xorriso DVD/BD writing, default=no],
, enable_dvd_obs_64=no)
@ -370,7 +396,7 @@ else
CFLAGS="-DDEBUG $CFLAGS"
fi
CFLAGS="$READLINE_DEF $LIBACL_DEF $XATTR_DEF $EXTF_DEF $EXTF_SUID_DEF $ZLIB_DEF $LIBJTE_DEF $XORRISO_DVD_OBS_64K $CFLAGS"
CFLAGS="$READLINE_DEF $LIBACL_DEF $XATTR_DEF $EXTF_DEF $EXTF_SUID_DEF $LFRONT_DEF $LFRONT_SUID_DEF $ZLIB_DEF $LIBJTE_DEF $XORRISO_DVD_OBS_64K $CFLAGS"
AC_CONFIG_FILES([
Makefile

1
libisoburn/libisoburn.ver
View File

@ -210,6 +210,7 @@ Xorriso_option_history;
Xorriso_option_iso_rr_pattern;
Xorriso_option_jigdo;
Xorriso_option_joliet;
Xorriso_option_launch_frontend;
Xorriso_option_list_arg_sorting;
Xorriso_option_list_delimiter;
Xorriso_option_list_extras;

1
xorriso/base_obj.c
View File

@ -373,6 +373,7 @@ int Xorriso_new(struct XorrisO ** xorriso,char *progname, int flag)
m->insert_count= 0;
m->insert_bytes= 0;
m->error_count= 0;
m->launch_frontend_banned= 0;
m->pacifier_style= 0;
m->pacifier_interval= 1.0;
m->pacifier_count= 0;

2
xorriso/compile_xorriso.sh
View File

@ -18,7 +18,7 @@ isoburn=./libisoburn-develop/libisoburn
xorr=./libisoburn-develop/xorriso
debug_opts="-O2"
def_opts="-DXorriso_allow_external_filterS"
def_opts="-DXorriso_allow_external_filterS -DXorriso_allow_launch_frontenD"
largefile_opts="-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1"
do_strip=0
static_opts=

32
xorriso/configure_ac.txt
View File

@ -376,6 +376,38 @@ then
AC_DEFINE([Xorriso_allow_extf_suiD], [])
fi
AH_TEMPLATE([Xorriso_allow_launch_frontenD], [Define to allow xorriso command -launch_frontend])
AC_ARG_ENABLE(launch-frontend,
[ --enable-launch-frontend Enable start of piped frontend program by xorriso, default=yes],
, enable_launch_frontend=yes)
if test x"$enable_launch_frontend" = xyes; then
LFRONT_DEF="-DXorriso_allow_launch_frontenD"
echo "enabled xorriso command -launch_frontend"
else
LFRONT_DEF=
echo "disabled xorriso command -launch_frontend"
fi
if test x$LFRONT_DEF = x-DXorriso_allow_launch_frontenD
then
AC_DEFINE([Xorriso_allow_launch_frontenD], [])
fi
AH_TEMPLATE([Xorriso_allow_extf_suiD], [Define to allow xorriso command -launch_frontend when running under setuid])
AC_ARG_ENABLE(launch-frontend-setuid,
[ --enable-launch-frontend-setuid Enable start of piped frontend program under setuid, default=no],
, enable_launch_frontend_setuid=no)
if test x$enable_launch_frontend_setuid = xyes; then
LFRONT_SUID_DEF="-DXorriso_allow_extf_suiD"
echo "enabled xorriso command -launch_frontend under setuid"
else
LFRONT_SUID_DEF=
echo "disabled xorriso command -launch_frontend under setuid"
fi
if test x$LFRONT_SUID_DEF = x-DXorriso_allow_extf_suiD
then
AC_DEFINE([Xorriso_allow_extf_suiD], [])
fi
AH_TEMPLATE([Xorriso_dvd_obs_default_64K], [Define to make 64 KB default size for DVD/BD writing])
AC_ARG_ENABLE(dvd-obs-64k,

5
xorriso/opts_d_h.c
View File

@ -2082,6 +2082,11 @@ int Xorriso_option_help(struct XorrisO *xorriso, int flag)
" \"parse\"|\"parse_bulk\"|\"compare_sev\"|\"list_sev\" param_text",
" Enable, use, or disable message sieve. Or parse lines into",
" words. Or compare or list severity names.",
" -launch_frontend program_with_args command_pipe reply_pipe",
" Start a program, connect its stdin to xorriso stdout and",
" stderr, connect its stdout to xorriso stdin.",
" If command_pipe and reply_pipe are nonempty, use them as",
" named pipes. The started program is supposed to use them too.",
" -logfile channel fileaddress Copy output of a channel to the given file.",
" channel may be 'R','I','M' as with -pkt_output or '.'",
" for the consolidated -pkt_output stream.",

22
xorriso/opts_i_o.c
View File

@ -74,6 +74,28 @@ int Xorriso_option_joliet(struct XorrisO *xorriso, char *mode, int flag)
}
/* Command -launch_frontend */
int Xorriso_option_launch_frontend(struct XorrisO *xorriso, char *cmd,
char *cmd_pipe_adr, char *reply_pipe_adr, int flag)
{
int ret;
xorriso->dialog= 2;
if(xorriso->launch_frontend_banned) {
sprintf(xorriso->info_text,
"-launch_frontend was already executed in this xorriso run");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
return(0);
}
xorriso->launch_frontend_banned= 1;
if(cmd[0] == 0 && (cmd_pipe_adr[0] == 0 || reply_pipe_adr[0] == 0))
return(1);
ret= Xorriso_launch_frontend(xorriso, cmd, cmd_pipe_adr, reply_pipe_adr, 0);
return(ret);
}
/* Option -list_arg_sorting */
int Xorriso_option_list_arg_sorting(struct XorrisO *xorriso, int flag)
{

18
xorriso/parse_exec.c
View File

@ -534,7 +534,7 @@ int Xorriso_count_args(struct XorrisO *xorriso, int argc, char **argv,
""
};
static char arg3_commands[][40]= {
"append_partition",
"append_partition", "launch_frontend",
""
};
static char arg4_commands[][40]= {
@ -740,6 +740,9 @@ int Xorriso_cmd_sorting_rank(struct XorrisO *xorriso,
"* Dialog mode control:",
"dialog", "page", "use_readline", "reassure",
"* Support for frontend programs via stdin and stdout (3):",
"launch_frontend",
"* Scripting, dialog and program control features (3):",
"rollback_end", "end",
@ -899,7 +902,7 @@ return:
{
int ret, was_dashed, end_ret, num1, num2, cmd_data_size= 2 * SfileadrL;
int mem_idx, arg_count, i;
char *cmd, *original_cmd, *cmd_data= NULL, *arg1, *arg2;
char *cmd, *original_cmd, *cmd_data= NULL, *arg1, *arg2, *arg3;
Xorriso_alloc_meM(cmd_data, char, cmd_data_size);
@ -974,6 +977,10 @@ next_command:;
arg2= argv[(*idx)+1];
else
arg2= "";
if((*idx) + 2 < argc)
arg3= argv[(*idx) + 2];
else
arg3= "";
ret= 1;
if(cmd[0]=='#' || cmd[0]==0) {
@ -1005,8 +1012,7 @@ next_command:;
} else if(strcmp(cmd,"append_partition")==0) {
(*idx)+= 3;
ret= Xorriso_option_append_partition(xorriso, arg1, arg2, argv[*idx - 1],
0);
ret= Xorriso_option_append_partition(xorriso, arg1, arg2, arg3, 0);
} else if(strcmp(cmd,"application_id")==0) {
(*idx)++;
@ -1350,6 +1356,10 @@ next_command:;
(*idx)++;
ret= Xorriso_option_joliet(xorriso, arg1, 0);
} else if(strcmp(cmd, "launch_frontend") == 0) {
(*idx)+= 3;
ret= Xorriso_option_launch_frontend(xorriso, arg1, arg2, arg3, 0);
} else if(strcmp(cmd, "list_arg_sorting") == 0) {
ret= Xorriso_option_list_arg_sorting(xorriso, 0);

213
xorriso/text_io.c
View File

@ -24,6 +24,7 @@
#include <errno.h>
#include <signal.h>
#include <pthread.h>
#include <fcntl.h>
/* for -charset */
@ -3673,3 +3674,215 @@ ex:;
return(1);
}
/* >>> make configurable by configure.ac # define Xorriso_allow_launch_frontenD 1 */
/* # define Xorriso_allow_launch_frontend_suiD 1 */
int Xorriso_launch_frontend(struct XorrisO *xorriso, char *cmd,
char *cmd_pipe_adr, char *reply_pipe_adr, int flag)
{
int command_pipe[2], reply_pipe[2], ret, i, argc= 0, cpid, is_banned= 0;
char **argv= NULL, **exec_argv= NULL, *sfe= NULL, *adrpt;
struct stat stbuf;
Xorriso_alloc_meM(sfe, char, 5 * SfileadrL);
for(i= 0; i < 2; i++)
command_pipe[i]= reply_pipe[i]= -1;
#ifndef Xorriso_allow_launch_frontenD
/* To be controlled by: configure --enable-external-filters */
sprintf(xorriso->info_text, "-launch_frontend : Banned at compile time.");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
sprintf(xorriso->info_text,
"This may be changed at compile time by ./configure option --enable-external-filters");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "HINT", 0);
is_banned= 1;
#endif /* ! Xorriso_allow_launch_frontenD */
#ifndef Xorriso_allow_launch_frontend_suiD
/* To be controlled by: configure --enable-external-filters-setuid */
if(getuid() != geteuid()) {
sprintf(xorriso->info_text,
"-set_filter: UID and EUID differ. Will not run external programs.");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
sprintf(xorriso->info_text,
"This may be changed at compile time by ./configure option --enable-external-filters-setuid");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "HINT", 0);
is_banned= 1;
}
#endif /* ! Xorriso_allow_launch_frontend_suiD */
if(is_banned)
{ret= 0; goto ex;}
ret= Xorriso_parse_line(xorriso, cmd, "", "", 0, &argc, &argv, 1 | 64);
if(ret <= 0)
goto ex;
if(argc > 0) {
if(strchr(argv[0], '/') == NULL) {
sprintf(xorriso->info_text,
"-launch_frontend : Command path does not contain a '/'-character");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
{ret= 0; goto ex;}
}
/* Add a NULL pointer for execv() */
Xorriso_alloc_meM(exec_argv, char *, argc + 1);
if(exec_argv == NULL) {
Xorriso_no_malloc_memory(xorriso, NULL, 0);
ret= -1; goto ex;
}
for(i= 0; i < argc; i++)
exec_argv[i]= argv[i];
exec_argv[argc]= NULL;
} else if(cmd_pipe_adr[0] == 0 || reply_pipe_adr[0] == 0)
{ret= 0; goto ex;}
if(cmd_pipe_adr[0] && reply_pipe_adr[0]) {
/* Create named pipes if needed */
for(i= 0; i < 2; i++) {
if(i == 0)
adrpt= cmd_pipe_adr;
else
adrpt= reply_pipe_adr;
ret= stat(adrpt, &stbuf);
if(ret == -1) {
ret= mknod(adrpt, S_IFIFO | S_IRWXU | S_IRWXG | S_IRWXO | S_IRWXO,
(dev_t) 0);
if(ret == -1) {
sprintf(xorriso->info_text,
"-launch_frontend: Cannot create named pipe %s",
Text_shellsafe(adrpt, sfe, 0));
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno,
"FAILURE", 0);
ret= 0; goto ex;
}
}
}
} else {
ret= pipe(command_pipe);
if (ret == -1) {
no_pipe_open:
sprintf(xorriso->info_text,
"-launch_frontend: Failed to create a nameless pipe object");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno, "FAILURE", 0);
ret= 0; goto ex;
}
ret= pipe(reply_pipe);
if (ret == -1)
goto no_pipe_open;
}
if(argc > 0) {
cpid = fork();
if (cpid == -1) {
sprintf(xorriso->info_text,
"-launch_frontend: Failed to create a child process");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno, "FAILURE", 0);
ret= 0; goto ex;
}
} else
cpid= -1; /* Dummy child id */
if (cpid != 0) {
/* Parent becomes the xorriso slave */
if(cmd_pipe_adr[0] && reply_pipe_adr[0]) {
command_pipe[0]= open(cmd_pipe_adr, O_RDONLY);
if(command_pipe[0] == -1) {
sprintf(xorriso->info_text,
"-launch_frontend: Failed to open named command pipe %s",
Text_shellsafe(cmd_pipe_adr, sfe, 0));
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno,
"FAILURE", 0);
ret= 0; goto ex;
}
reply_pipe[1]= open(reply_pipe_adr, O_WRONLY | O_APPEND);
if(reply_pipe[1] == -1) {
sprintf(xorriso->info_text,
"-launch_frontend: Failed to open named reply pipe %s",
Text_shellsafe(reply_pipe_adr, sfe, 0));
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno,
"FAILURE", 0);
ret= 0; goto ex;
}
} else {
/* Close unused pipe ends */
close(command_pipe[1]);
close(reply_pipe[0]);
}
close(0);
close(1);
close(2);
ret= dup2(command_pipe[0], 0);
if(ret == -1) {
no_dup:;
sprintf(xorriso->info_text,
"-launch_frontend: Failed to connect pipe to xorriso standard i/o channels");
Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, errno, "FAILURE", 0);
ret= -1; goto ex;
}
ret= dup2(reply_pipe[1], 1);
if(ret == -1)
goto no_dup;
ret= dup2(reply_pipe[1], 2);
if(ret == -1)
goto no_dup;
ret= 1; goto ex;
}
/* Child becomes the frontend program */
/* Close unused pipe ends */;
if(cmd_pipe_adr[0] && reply_pipe_adr[0]) {
command_pipe[1]= open(cmd_pipe_adr, O_WRONLY | O_APPEND);
if(command_pipe[1] == -1) {
fprintf(stderr,
"xorriso: -launch_frontend: Failed to open named command pipe '%s'\n",
cmd_pipe_adr);
perror("xorriso: -launch_frontend");
exit(1);
}
reply_pipe[0]= open(reply_pipe_adr, O_RDONLY);
if(reply_pipe[0] == -1) {
fprintf(stderr,
"xorriso: -launch_frontend: Failed to open named reply pipe '%s'\n",
reply_pipe_adr);
exit(1);
}
} else {
close(command_pipe[0]);
close(reply_pipe[1]);
}
close(0);
close(1);
ret= dup2(command_pipe[1], 1);
if(ret == -1) {
perror("xorriso: -launch_frontend: Error on redirecting standard output for frontend");
exit(1);
}
ret= dup2(reply_pipe[0], 0);
if(ret == -1) {
perror("xorriso: -launch_frontend: Error on redirecting standard input for frontend");
exit(1);
}
execv(exec_argv[0], exec_argv);
fprintf(stderr, "xorriso: -launch_frontend: Failure to start program '%s'\n",
exec_argv[0]);
perror("xorriso: -launch_frontend");
exit(1);
ex:;
Xorriso__dispose_words(&argc, &argv);
Xorriso_free_meM(exec_argv);
Xorriso_free_meM(sfe);
return(ret);
}

3
xorriso/text_io.h
View File

@ -96,5 +96,8 @@ int Xorriso_msg_op_parse_bulk(struct XorrisO *xorriso,
int max_words, int pflag, int bulk_lines,
int flag);
int Xorriso_launch_frontend(struct XorrisO *xorriso, char *cmd,
char *cmd_pipe_adr, char *reply_pipe_adr, int flag);
#endif /* ! Xorriso_pvt_textio_includeD */

62
xorriso/xorriso.1
View File

@ -9,7 +9,7 @@
.\" First parameter, NAME, should be all caps
.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
.\" other parameters are allowed: see man(7), man(1)
.TH XORRISO 1 "Version 1.2.5, Dec 18, 2012"
.TH XORRISO 1 "Version 1.2.5, Dec 20, 2012"
.\" Please adjust this date whenever revising the manpage.
.\"
.\" Some roff macros, for reference:
@ -4588,6 +4588,66 @@ Print to the result channel a blank separated list of all severity names.
Sorted from low to high severity.
.br
.TP
\fB\-launch_frontend\fR program_with_args command_pipe reply_pipe
.br
Start the program that is given as first word in parameter
program_with_args. Submit the other words from that parameter as
program arguments. Enable xorriso dialog mode.
.br
xorriso will abort when the started program ends or if it cannot
be started at all. In both cases it will return a non\-zero exit value.
The exit value will be zero if the frontend sends \-end or \-rollback_end
before ending itself.
.br
This command may be totaly banned at compile time. It is banned
by default if xorriso runs under setuid permissions.
.br
The program name will not be searched in the $PATH directories.
To make this clear, it must contain at least one /\-character.
Best is an absolute path. Like: /usr/bin/wish
.br
If one of command_pipe and reply_pipe is empty, then two nameless pipe
objects are created. xorriso standard input gets connected to the
standard output of the started program. xorriso standard output and
standard error get connected to the standard input of that program.
.br
The frontend program should first send via its standard output:
.br
\-mark 0 \-pkt_output on \-msg_op start_sieve \-
.br
It should be ready to decode \-pkt_output and to react on \-mark messages.
Best is to increment the \-mark number after each sent command sequence
and then to wait for the new number to show up in a mark message:
.br
some ... commands \-mark <incremented_number>
.br
Further are advised:
.br
\-report_about UPDATE \-abort_on NEVER
.br
\-iso_rr_pattern off \-disk_pattern off
.br
A check of the xorriso version should be done, in order to make sure
that all desired features are present.
.br
If command_pipe and reply_pipe are not empty, then
create named pipes with these names and use them for the connection to
the standard input and standard output of the started program.
It is not an error if the named pipes already exist.
.br
With named pipes it is important that the frontend program opens the
command_pipe first. This is because xorriso will block at this pipe
until the frontend opens it. If the frontend would try to open reply_pipe
first, then it would block there and create a deadlock situation.
.br
Command \-launch_frontend will only work once per xorriso run.
If all three command parameters are submitted as empty texts, then
no program will be started but nevertheless \-launch_frontend will
be irrevocably disabled.
If parameter program_with_args is submitted as empty text and both
pipe parameters are non\-empty, then no program will be started but
the standard i/o channels of xorriso will get connected to named pipes.
.TP
\fB\-prog\fR text
Use text as name of this program in subsequent messages
.TP

5
xorriso/xorriso.h
View File

@ -1526,6 +1526,11 @@ int Xorriso_option_jigdo(struct XorrisO *xorriso, char *aspect, char *arg,
/* Command -joliet "on"|"off" */
int Xorriso_option_joliet(struct XorrisO *xorriso, char *mode, int flag);
/* Command -launch_frontend */
/* @since 1.2.6 */
int Xorriso_option_launch_frontend(struct XorrisO *xorriso, char *cmd,
char *cmd_pipe_adr, char *reply_pipe_adr, int flag);
/* Command -list_arg_sorting */
/* @since 1.2.2 */
int Xorriso_option_list_arg_sorting(struct XorrisO *xorriso, int flag);

103
xorriso/xorriso.info
View File

@ -4014,6 +4014,53 @@ File: xorriso.info, Node: Frontend, Next: ExDevices, Prev: Scripting, Up: Co
*list_sev*
Print to the result channel a blank separated list of all severity
names. Sorted from low to high severity.
-launch_frontend program_with_args command_pipe reply_pipe
Start the program that is given as first word in parameter
program_with_args. Submit the other words from that parameter as
program arguments. Enable xorriso dialog mode.
xorriso will abort when the started program ends or if it cannot
be started at all. In both cases it will return a non-zero exit
value. The exit value will be zero if the frontend sends -end or
-rollback_end before ending itself.
This command may be totaly banned at compile time. It is banned by
default if xorriso runs under setuid permissions.
The program name will not be searched in the $PATH directories.
To make this clear, it must contain at least one /-character.
Best is an absolute path. Like: /usr/bin/wish
If one of command_pipe and reply_pipe is empty, then two nameless
pipe objects are created. xorriso standard input gets connected to
the standard output of the started program. xorriso standard
output and standard error get connected to the standard input of
that program.
The frontend program should first send via its standard output:
-mark 0 -pkt_output on -msg_op start_sieve -
It should be ready to decode -pkt_output and to react on -mark
messages. Best is to increment the -mark number after each sent
command sequence and then to wait for the new number to show up in
a mark message:
some ... commands -mark <incremented_number>
Further are advised:
-report_about UPDATE -abort_on NEVER
-iso_rr_pattern off -disk_pattern off
A check of the xorriso version should be done, in order to make
sure that all desired features are present.
If command_pipe and reply_pipe are not empty, then create named
pipes with these names and use them for the connection to the
standard input and standard output of the started program. It is
not an error if the named pipes already exist.
With named pipes it is important that the frontend program opens
the command_pipe first. This is because xorriso will block at this
pipe until the frontend opens it. If the frontend would try to
open reply_pipe first, then it would block there and create a
deadlock situation.
Command -launch_frontend will only work once per xorriso run. If
all three command parameters are submitted as empty texts, then no
program will be started but nevertheless -launch_frontend will be
irrevocably disabled. If parameter program_with_args is submitted
as empty text and both pipe parameters are non-empty, then no
program will be started but the standard i/o channels of xorriso
will get connected to named pipes.
-prog text
Use text as name of this program in subsequent messages
@ -4724,6 +4771,8 @@ File: xorriso.info, Node: CommandIdx, Next: ConceptIdx, Prev: Legal, Up: Top
* -iso_rr_pattern controls pattern expansion: Manip. (line 10)
* -jigdo clears JTE or or adds parameter to JTE: Jigdo. (line 33)
* -joliet enables production of Joliet tree: SetWrite. (line 10)
* -launch_frontend starts frontend program at pipes: Frontend.
(line 113)
* -list_arg_sorting prints sorting order of -x: ArgSort. (line 27)
* -list_delimiter replaces '--': Scripting. (line 60)
* -list_extras lists compile time extra features: Scripting.
@ -4776,8 +4825,8 @@ File: xorriso.info, Node: CommandIdx, Next: ConceptIdx, Prev: Legal, Up: Top
* -print_info prints message text line: Scripting. (line 102)
* -print_mark prints synchronizing text line: Scripting. (line 105)
* -print_size predicts image size: Inquiry. (line 91)
* -prog sets program name: Frontend. (line 113)
* -prog_help prints help text: Frontend. (line 116)
* -prog sets program name: Frontend. (line 160)
* -prog_help prints help text: Frontend. (line 163)
* -prompt prompts for enter key: Scripting. (line 110)
* -publisher sets publisher id: SetWrite. (line 186)
* -pvd_info shows image id strings: Inquiry. (line 104)
@ -5047,7 +5096,7 @@ File: xorriso.info, Node: ConceptIdx, Prev: CommandIdx, Up: Top
* Program, end without writing, -rollback_end: Scripting. (line 159)
* Program, list extra features, -list_extras: Scripting. (line 26)
* Program, print help text, -help: Scripting. (line 20)
* Program, print help text, -prog_help: Frontend. (line 116)
* Program, print help text, -prog_help: Frontend. (line 163)
* Program, print message text line, -print_info: Scripting. (line 102)
* Program, print result text line, -print: Scripting. (line 99)
* Program, print synchronizing text line, -print_mark: Scripting.
@ -5055,7 +5104,7 @@ File: xorriso.info, Node: ConceptIdx, Prev: CommandIdx, Up: Top
* Program, print version, -version: Scripting. (line 23)
* Program, prompt for enter key, -prompt: Scripting. (line 110)
* Program, replace --, -list_delimiter: Scripting. (line 60)
* Program, set name, -prog: Frontend. (line 113)
* Program, set name, -prog: Frontend. (line 160)
* Program, show current settings, -status: Scripting. (line 47)
* Program, status history, -status_history_max: Scripting. (line 56)
* Program, wait a time span, -sleep: Scripting. (line 114)
@ -5161,28 +5210,28 @@ Node: Restore174782
Node: Emulation181692
Node: Scripting191504
Node: Frontend198665
Node: Examples204596
Node: ExDevices205774
Node: ExCreate206433
Node: ExDialog207718
Node: ExGrowing208983
Node: ExModifying209788
Node: ExBootable210292
Node: ExCharset210844
Node: ExPseudo211665
Node: ExCdrecord212563
Node: ExMkisofs212880
Node: ExGrowisofs214220
Node: ExException215355
Node: ExTime215809
Node: ExIncBackup216268
Node: ExRestore220260
Node: ExRecovery221220
Node: Files221790
Node: Seealso223089
Node: Bugreport223812
Node: Legal224393
Node: CommandIdx225404
Node: ConceptIdx241495
Node: Examples207358
Node: ExDevices208536
Node: ExCreate209195
Node: ExDialog210480
Node: ExGrowing211745
Node: ExModifying212550
Node: ExBootable213054
Node: ExCharset213606
Node: ExPseudo214427
Node: ExCdrecord215325
Node: ExMkisofs215642
Node: ExGrowisofs216982
Node: ExException218117
Node: ExTime218571
Node: ExIncBackup219030
Node: ExRestore223022
Node: ExRecovery223982
Node: Files224552
Node: Seealso225851
Node: Bugreport226574
Node: Legal227155
Node: CommandIdx228166
Node: ConceptIdx244395

End Tag Table

63
xorriso/xorriso.texi
View File

@ -50,7 +50,7 @@
@c man .\" First parameter, NAME, should be all caps
@c man .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
@c man .\" other parameters are allowed: see man(7), man(1)
@c man .TH XORRISO 1 "Version 1.2.5, Dec 18, 2012"
@c man .TH XORRISO 1 "Version 1.2.5, Dec 20, 2012"
@c man .\" Please adjust this date whenever revising the manpage.
@c man .\"
@c man .\" Some roff macros, for reference:
@ -5374,6 +5374,67 @@ Print to the result channel a blank separated list of all severity names.
Sorted from low to high severity.
@*
@c man .TP
@item -launch_frontend program_with_args command_pipe reply_pipe
@kindex -launch_frontend starts frontend program at pipes
@cindex Frontend program, start at pipes, -launch_frontend
Start the program that is given as first word in parameter
program_with_args. Submit the other words from that parameter as
program arguments. Enable xorriso dialog mode.
@*
xorriso will abort when the started program ends or if it cannot
be started at all. In both cases it will return a non-zero exit value.
The exit value will be zero if the frontend sends -end or -rollback_end
before ending itself.
@*
This command may be totaly banned at compile time. It is banned
by default if xorriso runs under setuid permissions.
@*
The program name will not be searched in the $PATH directories.
To make this clear, it must contain at least one /-character.
Best is an absolute path. Like: /usr/bin/wish
@*
If one of command_pipe and reply_pipe is empty, then two nameless pipe
objects are created. xorriso standard input gets connected to the
standard output of the started program. xorriso standard output and
standard error get connected to the standard input of that program.
@*
The frontend program should first send via its standard output:
@*
-mark 0 -pkt_output on -msg_op start_sieve -
@*
It should be ready to decode -pkt_output and to react on -mark messages.
Best is to increment the -mark number after each sent command sequence
and then to wait for the new number to show up in a mark message:
@*
some ... commands -mark <incremented_number>
@*
Further are advised:
@*
-report_about UPDATE -abort_on NEVER
@*
-iso_rr_pattern off -disk_pattern off
@*
A check of the xorriso version should be done, in order to make sure
that all desired features are present.
@*
If command_pipe and reply_pipe are not empty, then
create named pipes with these names and use them for the connection to
the standard input and standard output of the started program.
It is not an error if the named pipes already exist.
@*
With named pipes it is important that the frontend program opens the
command_pipe first. This is because xorriso will block at this pipe
until the frontend opens it. If the frontend would try to open reply_pipe
first, then it would block there and create a deadlock situation.
@*
Command -launch_frontend will only work once per xorriso run.
If all three command parameters are submitted as empty texts, then
no program will be started but nevertheless -launch_frontend will
be irrevocably disabled.
If parameter program_with_args is submitted as empty text and both
pipe parameters are non-empty, then no program will be started but
the standard i/o channels of xorriso will get connected to named pipes.
@c man .TP
@item -prog text
@kindex -prog sets program name
@cindex Program, set name, -prog

1
xorriso/xorriso_private.h
View File

@ -644,6 +644,7 @@ struct XorrisO { /* the global context of xorriso */
double insert_count;
double insert_bytes;
double error_count; /* double will not roll over */
int launch_frontend_banned;
/* pacifiers */
int pacifier_style; /* 0= xorriso, 1=mkisofs 2=cdrecord */

2
xorriso/xorriso_timestamp.h
View File

@ -1 +1 @@
#define Xorriso_timestamP "2012.12.19.210641"
#define Xorriso_timestamP "2012.12.20.202145"