#ifndef lint
static const char rcsid[] =
- "$Id: tape.c,v 1.15 2000/05/28 16:52:21 stelian Exp $";
+ "$Id: tape.c,v 1.17 2000/06/03 22:24:18 stelian Exp $";
#endif /* not lint */
#include <sys/param.h>
static void xtrmapskip __P((char *, size_t));
static void xtrskip __P((char *, size_t));
+#define COMPARE_ONTHEFLY 1
+
+#if COMPARE_ONTHEFLY
+static int ifile; /* input file for compare */
+static int cmperror; /* compare error */
+static void xtrcmpfile __P((char *, size_t));
+static void xtrcmpskip __P((char *, size_t));
+#endif
+
static int readmapflag;
/*
do {
fprintf(stderr, "Specify next volume #: ");
(void) fflush(stderr);
- (void) fgets(buf, BUFSIZ, terminal);
+ (void) fgets(buf, TP_BSIZE, terminal);
} while (!feof(terminal) && buf[0] == '\n');
if (feof(terminal))
exit(1);
fprintf(stderr, "Enter ``none'' if there are no more tapes\n");
fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape);
(void) fflush(stderr);
- (void) fgets(buf, BUFSIZ, terminal);
+ (void) fgets(buf, TP_BSIZE, terminal);
if (feof(terminal))
exit(1);
if (!strcmp(buf, "none\n")) {
return;
}
+#if COMPARE_ONTHEFLY
+/*
+ * Compare the next block of a file.
+ */
+static void
+xtrcmpfile(char *buf, size_t size)
+{
+ static char cmpbuf[MAXBSIZE];
+
+ if (cmperror)
+ return;
+
+ if (read(ifile, cmpbuf, size) != size) {
+ fprintf(stderr, "%s: size has changed.\n",
+ curfile.name);
+ cmperror = 1;
+ return;
+ }
+
+ if (memcmp(buf, cmpbuf, size) != 0) {
+ fprintf(stderr, "%s: tape and disk copies are different\n",
+ curfile.name);
+ cmperror = 1;
+ return;
+ }
+}
+
+/*
+ * Skip over a hole in a file.
+ */
+static void
+xtrcmpskip(char *buf, size_t size)
+{
+ static char cmpbuf[MAXBSIZE];
+ int i;
+
+ if (cmperror)
+ return;
+
+ if (read(ifile, cmpbuf, size) != size) {
+ fprintf(stderr, "%s: size has changed.\n",
+ curfile.name);
+ cmperror = 1;
+ return;
+ }
+
+ for (i = 0; i < size; ++i)
+ if (cmpbuf[i] != '\0') {
+ fprintf(stderr, "%s: tape and disk copies are different\n",
+ curfile.name);
+ cmperror = 1;
+ return;
+ }
+}
+#endif /* COMPARE_ONTHEFLY */
+
+#if !COMPARE_ONTHEFLY
static int
do_cmpfiles(int fd_tape, int fd_disk, long size)
{
return (1);
#endif
}
+#endif /* !COMPARE_ONTHEFLY */
+#if !COMPARE_ONTHEFLY
static char tmpfilename[MAXPATHLEN];
+#endif
void
comparefile(char *name)
{
- static char *tmpfile = NULL;
int mode;
- struct stat sb, stemp;
+ struct stat sb;
int r;
+#if !COMPARE_ONTHEFLY
+ static char *tmpfile = NULL;
+ struct stat stemp;
+#endif
if ((r = lstat(name, &sb)) != 0) {
warn("%s: does not exist (%d)", name, r);
return;
case IFREG:
+#if COMPARE_ONTHEFLY
+ if ((ifile = open(name, O_RDONLY)) < 0) {
+ panic("Can't open %s: %s\n", name, strerror(errno));
+ skipfile();
+ compare_errors = 1;
+ }
+ else {
+ cmperror = 0;
+ getfile(xtrcmpfile, xtrcmpskip);
+ if (!cmperror) {
+ char c;
+ if (read(ifile, &c, 1) != 0) {
+ fprintf(stderr, "%s: size has changed.\n",
+ name);
+ cmperror = 1;
+ }
+ }
+ if (cmperror)
+ compare_errors = 1;
+ close(ifile);
+ }
+#else
if (tmpfile == NULL) {
/* argument to mktemp() must not be in RO space: */
snprintf(tmpfilename, sizeof(tmpfilename), "%s/restoreCXXXXXX", tmpdir);
cmpfiles(tmpfile, name, &sb);
unlink(tmpfile);
#endif
+#endif /* COMPARE_ONTHEFLY */
return;
}
/* NOTREACHED */