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+
+
+
+
-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
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+
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-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
|
}
return(-1);
}
off_t lseek_net(int filedes, off_t offset, int whence) {
struct stat file_status;
char tmpbuf[1024];
off_t retval, rset=0, i;
size_t n;
ssize_t read_val;
int newfd;
fstat(filedes, &file_status);
// if (S_ISSOCK(file_status.st_mode)) {
if (whence==SEEK_END) return(-1);
if (offset!=0 || whence!=SEEK_SET) return(-1); /* For now ... */
if (dact_urls[filedes].url==NULL) return(-1);
if ((newfd=open_net(dact_urls[filedes].url,dact_urls[filedes].flags,dact_urls[filedes].mode))<0) return(-1);
close(filedes);
dup2(newfd,filedes);
return(0);
}
return(lseek(filedes,offset,whence));
if (whence!=SEEK_CUR || offset<=0) {
if (whence!=SEEK_SET) return(-1); /* For now ... */
if (dact_urls[filedes].url==NULL) return(-1);
if ((newfd=open_net(dact_urls[filedes].url,dact_urls[filedes].flags,dact_urls[filedes].mode))<0) return(-1);
close(filedes);
dup2(newfd,filedes);
if (offset==0) return(0);
}
} else {
retval=lseek(filedes, offset, whence);
if (!(retval<0 && whence==SEEK_CUR && offset>0)) {
return(retval);
}
}
retval=0;
for (i=0; i<offset; i++) {
n=offset-rset;
if (n>sizeof(tmpbuf)) n=sizeof(tmpbuf);
read_val=read(filedes, tmpbuf, n);
if (read_val<=0) { retval=-1; break; }
rset+=read_val;
}
retval=offset+1;
return(retval);
}
#else
#ifndef O_BINARY
#define O_BINARY 0x0
#endif
#ifndef O_LARGEFILE
#define O_LARGEFILE 0x0
#endif
int createlisten(int port) { return(-1); }
void closeconnection(int sockfd) { return; }
int createconnection_tcp(char *host, int port) { return(-1); }
int open_net(const char *pathname, int flags, mode_t mode) {
return(open(pathname,flags|O_BINARY|O_LARGEFILE,mode));
}
off_t lseek_net(int filedes, off_t offset, int whence) {
char tmpbuf[1024];
off_t retval, rset=0, i;
size_t n;
ssize_t read_val;
return(lseek(filedes,offset,whence));
}
retval=lseek(filedes, offset, whence);
if (retval<0 && whence==SEEK_CUR && offset>0) {
retval=0;
for (i=0; i<offset; i++) {
n=offset-rset;
if (n>sizeof(tmpbuf)) n=sizeof(tmpbuf);
read_val=read(filedes, tmpbuf, n);
if (read_val<=0) { retval=-1; break; }
rset+=read_val;
}
retval=offset+1;
}
return(retval);
}
#endif
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