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/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
*/
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include "bootlib.h"
/* OS_FCOPY -- Copy a file. Used by RTAR to resolve links.
*/
int
os_fcopy (
char *oldfile,
char *newfile
)
{
XCHAR buf[SZ_FBUF];
XINT status, junk, maxch = SZ_FBUF, mode = 0, in, out, n;
if (os_access (oldfile,0,0) == NO)
return (ERR);
if (os_access (oldfile, 0, TEXT_FILE) == YES) {
if (bdebug)
fprintf (stderr, "copy text file '%s' -> '%s'\n",
oldfile, newfile);
mode = READ_ONLY;
ZOPNTX ((PKCHAR *)vfn2osfn(oldfile,0), &mode, &in);
if (in == XERR)
return (ERR);
mode = NEW_FILE;
ZOPNTX ((PKCHAR *)vfn2osfn(newfile,1), &mode, &out);
if (out == XERR) {
ZCLSTX (&in, &status);
return (ERR);
}
while (ZGETTX (&in, buf, &maxch, &n), n != XEOF) {
if (n != XERR)
ZPUTTX (&out, buf, &n, &status);
if (n == XERR || status == XERR) {
ZCLSTX (&in, &junk);
ZCLSTX (&out, &junk);
return (ERR);
}
}
ZCLSTX (&in, &status);
ZCLSTX (&out, &status);
return (status);
} else {
if (bdebug)
fprintf (stderr, "copy binary file `%s' -> `%s'\n",
oldfile, newfile);
if ((in = open (vfn2osfn(oldfile,0), O_RDONLY)) == ERR)
return (ERR);
if ((out = creat (vfn2osfn(newfile,1), 0644)) == ERR) {
close (in);
return (ERR);
}
while ((n = read (in, (char *)buf, SZ_FBUF)) > 0)
write (out, (char *)buf, n);
close (in);
close (out);
if (n < 0)
return (ERR);
}
return (ERR);
}
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