cliutils.c
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#include "system.h"
#if HAVE_MCHECK_H
#include <mcheck.h>
#endif
#include <errno.h>
#include <sys/wait.h>
#include <rpm/rpmlog.h>
#include <rpm/rpmlib.h>
#include <rpm/rpmfileutil.h>
#include <rpm/rpmmacro.h>
#include <rpm/rpmcli.h>
#include "cliutils.h"
#include "debug.h"
static pid_t pipeChild = 0;
RPM_GNUC_NORETURN
void argerror(const char * desc)
{
fprintf(stderr, _("%s: %s\n"), __progname, desc);
exit(EXIT_FAILURE);
}
static void printVersion(FILE * fp)
{
fprintf(fp, _("RPM version %s\n"), rpmEVR);
}
static void printBanner(FILE * fp)
{
fprintf(fp, _("Copyright (C) 1998-2002 - Red Hat, Inc.\n"));
fprintf(fp, _("This program may be freely redistributed under the terms of the GNU GPL\n"));
}
void printUsage(poptContext con, FILE * fp, int flags)
{
printVersion(fp);
printBanner(fp);
fprintf(fp, "\n");
if (rpmIsVerbose())
poptPrintHelp(con, fp, flags);
else
poptPrintUsage(con, fp, flags);
}
int initPipe(void)
{
int p[2];
if (pipe(p) < 0) {
fprintf(stderr, _("creating a pipe for --pipe failed: %m\n"));
return -1;
}
if (!(pipeChild = fork())) {
(void) signal(SIGPIPE, SIG_DFL);
(void) close(p[1]);
(void) dup2(p[0], STDIN_FILENO);
(void) close(p[0]);
(void) execl("/bin/sh", "/bin/sh", "-c", rpmcliPipeOutput, NULL);
fprintf(stderr, _("exec failed\n"));
exit(EXIT_FAILURE);
}
(void) close(p[0]);
(void) dup2(p[1], STDOUT_FILENO);
(void) close(p[1]);
return 0;
}
int finishPipe(void)
{
int rc = 0;
if (pipeChild) {
int status;
pid_t reaped;
(void) fclose(stdout);
do {
reaped = waitpid(pipeChild, &status, 0);
} while (reaped == -1 && errno == EINTR);
if (reaped == -1 || !WIFEXITED(status) || WEXITSTATUS(status))
rc = 1;
}
return rc;
}