void
unexec(
char *outfile,
char *infile
)
{
int infd;
int outfd;
char tmpbuf[L_tmpnam];
char *tmpfile;
infd = open(infile, O_RDONLY, 0);
if (infd < 0) {
fatal_unexec("cannot open input file `%s'", infile);
exit(1);
}
tmpnam(tmpbuf);
tmpfile = rindex(tmpbuf, '/');
if (tmpfile == NULL) {
tmpfile = tmpbuf;
} else {
tmpfile++;
}
outfd = open(tmpfile, O_WRONLY|O_TRUNC|O_CREAT, 0755);
if (outfd < 0) {
close(infd);
fatal_unexec("cannot open tmp file `%s'", tmpfile);
exit(1);
}
if (!unexec_doit(infd, outfd)) {
close(infd);
close(outfd);
unlink(tmpfile);
exit(1);
}
close(infd);
close(outfd);
if (rename(tmpfile, outfile) < 0) {
unlink(tmpfile);
fatal_unexec("cannot rename `%s' to `%s'", tmpfile, outfile);
exit(1);
}
}
void unexec(char *outfile,char *infile)
{
char tmpfile[MAXPATHLEN];
int infd,outfd;
if ((infd=open(infile, O_RDONLY, 0))<0)
fatal_unexec("cannot open input file `%s'", infile);
strcpy(tmpfile,outfile);
strcat(tmpfile,"-temp");
if ((outfd=open(tmpfile, O_RDWR|O_TRUNC|O_CREAT, 0755))<0)
fatal_unexec("cannot open temporary output file `%s'",tmpfile);
unexec_doit(infd,outfd);
close(infd);
close(outfd);
if (rename(tmpfile, outfile)<0)
{
unlink(tmpfile);
fatal_unexec("cannot rename `%s' to `%s'", tmpfile, outfile);
}
}