int exec_command(FILE *in, FILE *out, void *cmd)
{
if (in && dup2(fileno(in), fileno(stdin)) < 0)
rip_die(EXIT_PRNERR_NORETRY_BAD_SETTINGS, "%s: Could not dup stdin\n", (const char *)cmd);
if (out && dup2(fileno(out), fileno(stdout)) < 0)
rip_die(EXIT_PRNERR_NORETRY_BAD_SETTINGS, "%s: Could not dup stdout\n", (const char *)cmd);
execl(get_modern_shell(), get_modern_shell(), "-c", (const char *)cmd, (char *)NULL);
_log("Error: Executing \"%s -c %s\" failed (%s).\n", get_modern_shell(), (const char *)cmd, strerror(errno));
return EXIT_PRNERR_NORETRY_BAD_SETTINGS;
}
const char * temp_dir()
{
static const char *tmpdir = NULL;
if (!tmpdir)
{
const char *dirs[] = { getenv("TMPDIR"), P_tmpdir, "/tmp" };
int i;
for (i = 0; i < (sizeof(dirs) / sizeof(dirs[0])); i++) {
if (access(dirs[i], W_OK) == 0) {
tmpdir = dirs[i];
break;
}
}
if (tmpdir)
{
_log("Storing temporary files in %s\n", tmpdir);
setenv("TMPDIR", tmpdir, 1); /* for child processes */
}
else
rip_die(EXIT_PRNERR_NORETRY_BAD_SETTINGS,
"Cannot find a writable temp dir.");
}
return tmpdir;
}
/*
* This function is only used when the input data is not PostScript. Then it
* runs a filter which converts non-PostScript files into PostScript. The user
* can choose which filter he wants to use. The filter command line is
* provided by 'fileconverter'.
*/
void get_fileconverter_handle(const char *alreadyread, FILE **fd, pid_t *pid)
{
pid_t kid1;
FILE *kid1out;
const char *pagesize;
char *fileconv;
kid1_userdata_t kid1_userdata;
_log("\nStarting converter for non-PostScript files\n");
if (isempty(fileconverter) && !guess_fileconverter())
rip_die(EXIT_PRNERR_NORETRY_BAD_SETTINGS, "Cannot convert file to "
"Postscript (missing fileconverter).");
/* Use wider margins so that the pages come out completely on every printer
* model (especially HP inkjets) */
pagesize = option_get_value(find_option("PageSize"), optionset("header"));
if (pagesize && startswith(fileconverter, "a2ps")) {
if (!strcasecmp(pagesize, "letter"))
pagesize = "Letterdj";
else if (!strcasecmp(pagesize, "a4"))
pagesize = "A4dj";
}
if (do_docs)
snprintf(get_current_job()->title, 128, "Documentation for the %s", printer_model);
fileconv = fileconverter_from_template(fileconverter, pagesize, get_current_job()->title);
kid1_userdata.fileconv = fileconv;
kid1_userdata.alreadyread = alreadyread;
kid1 = start_process("kid1", exec_kid1, &kid1_userdata, NULL, &kid1out);
if (kid1 < 0)
rip_die(EXIT_PRNERR_NORETRY_BAD_SETTINGS, "Cannot convert file to "
"Postscript (Cannot fork for kid1!)\n");
*fd = kid1out;
*pid = kid1;
free(fileconv);
}
void add_process(const char *name, int pid, int isgroup)
{
int i;
for (i = 0; i < MAX_CHILDS; i++) {
if (procs[i].pid == -1) {
strlcpy(procs[i].name, name, 64);
procs[i].pid = pid;
procs[i].isgroup = isgroup;
return;
}
}
rip_die(EXIT_PRNERR_NORETRY_BAD_SETTINGS, "Didn't think there would be that many child processes... Exiting.\n");
}
