-/* $NetBSD: dd.c,v 1.12 1998/08/19 01:32:44 thorpej Exp $ */
-
/*-
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
#include <sys/cdefs.h>
#ifndef lint
-__COPYRIGHT("@(#) Copyright (c) 1991, 1993, 1994\n\
- The Regents of the University of California. All rights reserved.\n");
+__used static char const copyright[] =
+"@(#) Copyright (c) 1991, 1993, 1994\n\
+ The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)dd.c 8.5 (Berkeley) 4/2/94";
-#else
-__RCSID("$NetBSD: dd.c,v 1.12 1998/08/19 01:32:44 thorpej Exp $");
#endif
+__used static const char rcsid[] =
+ "$FreeBSD: src/bin/dd/dd.c,v 1.36 2002/03/07 14:00:33 markm Exp $";
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
+#include <sys/conf.h>
+#include <sys/filio.h>
+#include <sys/time.h>
+
+#ifdef __APPLE__
#include <sys/ioctl.h>
-#include <sys/mtio.h>
+#else
+#include <sys/disklabel.h>
+#endif
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
-#include <signal.h>
+#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <time.h>
#include <unistd.h>
#include "dd.h"
#include "extern.h"
-static void dd_close __P((void));
-static void dd_in __P((void));
-static void getfdtype __P((IO *));
-static void setup __P((void));
-
-int main __P((int, char *[]));
+static void dd_close(void);
+static void dd_in(void);
+static void getfdtype(IO *);
+static void setup(void);
IO in, out; /* input/output state */
STAT st; /* statistics */
-void (*cfunc) __P((void)); /* conversion function */
-u_long cpy_cnt; /* # of blocks to copy */
+void (*cfunc)(void); /* conversion function */
+quad_t cpy_cnt; /* # of blocks to copy */
+off_t pending = 0; /* pending seek if sparse */
u_int ddflags; /* conversion options */
-u_int cbsz; /* conversion block size */
-u_int files_cnt = 1; /* # of files to copy */
-const u_char *ctab; /* conversion table */
+size_t cbsz; /* conversion block size */
+quad_t files_cnt = 1; /* # of files to copy */
+const u_char *ctab; /* conversion table */
int
-main(argc, argv)
- int argc;
- char *argv[];
+main(int argc, char *argv[])
{
+ (void)setlocale(LC_CTYPE, "");
jcl(argv);
setup();
(void)signal(SIGINFO, summaryx);
(void)signal(SIGINT, terminate);
- (void)atexit(summary);
+ atexit(summary);
while (files_cnt--)
dd_in();
dd_close();
exit(0);
- /* NOTREACHED */
}
static void
-setup()
+setup(void)
{
u_int cnt;
+ struct timeval tv;
if (in.name == NULL) {
in.name = "stdin";
in.fd = STDIN_FILENO;
} else {
in.fd = open(in.name, O_RDONLY, 0);
- if (in.fd < 0)
+ if (in.fd == -1)
err(1, "%s", in.name);
}
* Without read we may have a problem if output also does
* not support seeks.
*/
- if (out.fd < 0) {
+ if (out.fd == -1) {
out.fd = open(out.name, O_WRONLY | OFLAGS, DEFFILEMODE);
out.flags |= NOREAD;
}
- if (out.fd < 0)
+ if (out.fd == -1)
err(1, "%s", out.name);
}
* Allocate space for the input and output buffers. If not doing
* record oriented I/O, only need a single buffer.
*/
- if (!(ddflags & (C_BLOCK|C_UNBLOCK))) {
+ if (!(ddflags & (C_BLOCK | C_UNBLOCK))) {
if ((in.db = malloc(out.dbsz + in.dbsz - 1)) == NULL)
- err(1, "%s", "");
+ err(1, "input buffer");
out.db = in.db;
- } else if ((in.db =
- malloc((u_int)(MAX(in.dbsz, cbsz) + cbsz))) == NULL ||
- (out.db = malloc((u_int)(out.dbsz + cbsz))) == NULL)
- err(1, "%s", "");
+ } else if ((in.db = malloc(MAX(in.dbsz, cbsz) + cbsz)) == NULL ||
+ (out.db = malloc(out.dbsz + cbsz)) == NULL)
+ err(1, "output buffer");
in.dbp = in.db;
out.dbp = out.db;
pos_out();
/*
- * Truncate the output file; ignore errors because it fails on some
- * kinds of output files, tapes, for example.
+ * Truncate the output file. If it fails on a type of output file
+ * that it should _not_ fail on, error out.
*/
- if ((ddflags & (C_OF | C_SEEK | C_NOTRUNC)) == (C_OF | C_SEEK))
- (void)ftruncate(out.fd, (off_t)out.offset * out.dbsz);
+ if ((ddflags & (C_OF | C_SEEK | C_NOTRUNC)) == (C_OF | C_SEEK) &&
+ out.flags & ISTRUNC)
+ if (ftruncate(out.fd, out.offset * out.dbsz) == -1)
+ err(1, "truncating %s", out.name);
/*
* If converting case at the same time as another conversion, build a
* table that does both at once. If just converting case, use the
* built-in tables.
*/
- if (ddflags & (C_LCASE|C_UCASE)) {
-#ifdef NO_CONV
- /* Should not get here, but just in case... */
- errx(1, "case conv and -DNO_CONV");
-#else /* NO_CONV */
- if (ddflags & C_ASCII || ddflags & C_EBCDIC) {
+ if (ddflags & (C_LCASE | C_UCASE)) {
+ if (ddflags & (C_ASCII | C_EBCDIC)) {
if (ddflags & C_LCASE) {
- for (cnt = 0; cnt < 0377; ++cnt)
+ for (cnt = 0; cnt <= 0377; ++cnt)
casetab[cnt] = tolower(ctab[cnt]);
} else {
- for (cnt = 0; cnt < 0377; ++cnt)
+ for (cnt = 0; cnt <= 0377; ++cnt)
casetab[cnt] = toupper(ctab[cnt]);
}
} else {
if (ddflags & C_LCASE) {
- for (cnt = 0; cnt < 0377; ++cnt)
- casetab[cnt] = tolower(cnt);
+ for (cnt = 0; cnt <= 0377; ++cnt)
+ casetab[cnt] = tolower((int)cnt);
} else {
- for (cnt = 0; cnt < 0377; ++cnt)
- casetab[cnt] = toupper(cnt);
+ for (cnt = 0; cnt <= 0377; ++cnt)
+ casetab[cnt] = toupper((int)cnt);
}
}
-
ctab = casetab;
-#endif /* NO_CONV */
}
- (void)time(&st.start); /* Statistics timestamp. */
+ (void)gettimeofday(&tv, (struct timezone *)NULL);
+ st.start = tv.tv_sec + tv.tv_usec * 1e-6;
}
static void
-getfdtype(io)
- IO *io;
+getfdtype(IO *io)
{
- struct mtget mt;
struct stat sb;
+ int type;
- if (fstat(io->fd, &sb))
+ if (fstat(io->fd, &sb) == -1)
err(1, "%s", io->name);
- if (S_ISCHR(sb.st_mode))
- io->flags |= ioctl(io->fd, MTIOCGET, &mt) ? ISCHR : ISTAPE;
- else if (lseek(io->fd, (off_t)0, SEEK_CUR) == -1 && errno == ESPIPE)
- io->flags |= ISPIPE; /* XXX fixed in 4.4BSD */
+ if (S_ISREG(sb.st_mode))
+ io->flags |= ISTRUNC;
+ if (S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)) {
+ if (ioctl(io->fd, FIODTYPE, &type) == -1) {
+ err(1, "%s", io->name);
+ } else {
+#ifdef __APPLE__ /* MacOSX uses enumeration for type not a bitmask */
+ if (type == D_TAPE)
+ io->flags |= ISTAPE;
+ else if (type == D_DISK || type == D_TTY) {
+#else /* !__APPLE__ */
+ if (type & D_TAPE)
+ io->flags |= ISTAPE;
+ else if (type & (D_DISK | D_MEM)) {
+ if (type & D_DISK) {
+ const int one = 1;
+
+ (void)ioctl(io->fd, DIOCWLABEL, &one);
+ }
+#endif /* __APPLE__ */
+ io->flags |= ISSEEK;
+ }
+#ifdef __APPLE__
+ if (S_ISCHR(sb.st_mode) && (type != D_TAPE))
+#else /* !__APPLE__ */
+ if (S_ISCHR(sb.st_mode) && (type & D_TAPE) == 0)
+#endif /* __APPLE__ */
+ io->flags |= ISCHR;
+ }
+ return;
+ }
+ errno = 0;
+ if (lseek(io->fd, (off_t)0, SEEK_CUR) == -1 && errno == ESPIPE)
+ io->flags |= ISPIPE;
+ else
+ io->flags |= ISSEEK;
}
static void
-dd_in()
+dd_in(void)
{
- int flags, n;
+ ssize_t n;
- for (flags = ddflags;;) {
- if (cpy_cnt && (st.in_full + st.in_part) >= cpy_cnt)
+ for (;;) {
+ switch (cpy_cnt) {
+ case -1: /* count=0 was specified */
return;
+ case 0:
+ break;
+ default:
+ if (st.in_full + st.in_part >= (u_quad_t)cpy_cnt)
+ return;
+ break;
+ }
/*
- * Clear the buffer first if doing "sync" on input.
- * If doing block operations use spaces. This will
- * affect not only the C_NOERROR case, but also the
- * last partial input block which should be padded
- * with zero and not garbage.
+ * Zero the buffer first if sync; if doing block operations,
+ * use spaces.
*/
- if (flags & C_SYNC) {
- if (flags & (C_BLOCK|C_UNBLOCK))
- (void)memset(in.dbp, ' ', in.dbsz);
+ if (ddflags & C_SYNC) {
+ if (ddflags & (C_BLOCK | C_UNBLOCK))
+ memset(in.dbp, ' ', in.dbsz);
else
- (void)memset(in.dbp, 0, in.dbsz);
+ memset(in.dbp, 0, in.dbsz);
}
n = read(in.fd, in.dbp, in.dbsz);
}
/* Read error. */
- if (n < 0) {
+ if (n == -1) {
/*
* If noerror not specified, die. POSIX requires that
* the warning message be followed by an I/O display.
*/
- if (!(flags & C_NOERROR))
+ if (!(ddflags & C_NOERROR))
err(1, "%s", in.name);
warn("%s", in.name);
summary();
/*
- * If it's not a tape drive or a pipe, seek past the
+ * If it's a seekable file descriptor, seek past the
* error. If your OS doesn't do the right thing for
* raw disks this section should be modified to re-read
* in sector size chunks.
*/
- if (!(in.flags & (ISPIPE|ISTAPE)) &&
+ if (in.flags & ISSEEK &&
lseek(in.fd, (off_t)in.dbsz, SEEK_CUR))
warn("%s", in.name);
++st.in_full;
/* Handle full input blocks. */
- } else if (n == in.dbsz) {
+ } else if ((size_t)n == in.dbsz) {
in.dbcnt += in.dbrcnt = n;
++st.in_full;
}
if (ddflags & C_SWAB) {
- if ((n = in.dbcnt) & 1) {
+ if ((n = in.dbrcnt) & 1) {
++st.swab;
--n;
}
- swab(in.dbp, in.dbp, n);
+ swab(in.dbp, in.dbp, (size_t)n);
}
in.dbp += in.dbrcnt;
}
/*
- * Cleanup any remaining I/O and flush output. If necesssary, output file
+ * Clean up any remaining I/O and flush output. If necessary, the output file
* is truncated.
*/
static void
-dd_close()
+dd_close(void)
{
if (cfunc == def)
def_close();
block_close();
else if (cfunc == unblock)
unblock_close();
- if (ddflags & C_OSYNC && out.dbcnt < out.dbsz) {
- (void)memset(out.dbp, 0, out.dbsz - out.dbcnt);
+ if (ddflags & C_OSYNC && out.dbcnt && out.dbcnt < out.dbsz) {
+ if (ddflags & (C_BLOCK | C_UNBLOCK))
+ memset(out.dbp, ' ', out.dbsz - out.dbcnt);
+ else
+ memset(out.dbp, 0, out.dbsz - out.dbcnt);
out.dbcnt = out.dbsz;
}
- if (out.dbcnt)
+ if (out.dbcnt || pending)
dd_out(1);
}
void
-dd_out(force)
- int force;
+dd_out(int force)
{
- static int warned;
- int cnt, n, nw;
u_char *outp;
+ size_t cnt, i, n;
+ ssize_t nw;
+ static int warned;
+ int sparse;
/*
* Write one or more blocks out. The common case is writing a full
outp = out.db;
for (n = force ? out.dbcnt : out.dbsz;; n = out.dbsz) {
for (cnt = n;; cnt -= nw) {
- nw = write(out.fd, outp, cnt);
+ sparse = 0;
+ if (ddflags & C_SPARSE) {
+ sparse = 1; /* Is buffer sparse? */
+ for (i = 0; i < cnt; i++)
+ if (outp[i] != 0) {
+ sparse = 0;
+ break;
+ }
+ }
+ if (sparse && !force) {
+ pending += cnt;
+ nw = cnt;
+ } else {
+ if (pending != 0) {
+ if (force)
+ pending--;
+ if (lseek(out.fd, pending, SEEK_CUR) ==
+ -1)
+ err(2, "%s: seek error creating sparse file",
+ out.name);
+ if (force)
+ write(out.fd, outp, 1);
+ pending = 0;
+ }
+ if (cnt)
+ nw = write(out.fd, outp, cnt);
+ else
+ return;
+ }
+
if (nw <= 0) {
if (nw == 0)
errx(1, "%s: end of device", out.name);
}
outp += nw;
st.bytes += nw;
- if (nw == n) {
+ if ((size_t)nw == n) {
if (n != out.dbsz)
++st.out_part;
else
break;
}
++st.out_part;
- if (nw == cnt)
+ if ((size_t)nw == cnt)
break;
+ if (out.flags & ISTAPE)
+ errx(1, "%s: short write on tape device",
+ out.name);
if (out.flags & ISCHR && !warned) {
warned = 1;
warnx("%s: short write on character device",
out.name);
}
- if (out.flags & ISTAPE)
- errx(1, "%s: short write on tape device", out.name);
}
if ((out.dbcnt -= n) < out.dbsz)
break;
projects / apple / file_cmds.git / blobdiff