diff options
| author | green <green@FreeBSD.org> | 1999-07-13 18:44:56 +0000 |
|---|---|---|
| committer | green <green@FreeBSD.org> | 1999-07-13 18:44:56 +0000 |
| commit | ac63841b827307ed6eac081c9536253d8c1fb21b (patch) | |
| tree | a8f689318a437158780b279a77fc4790cfa02e2b /bin/dd/dd.c | |
| parent | f091c51c34a496d3062026be39d6948fa02b6c6e (diff) | |
| download | FreeBSD-src-ac63841b827307ed6eac081c9536253d8c1fb21b.zip FreeBSD-src-ac63841b827307ed6eac081c9536253d8c1fb21b.tar.gz | |
Implement seekability for disk devices (not just regular files).
Also, fix pos_out() to do the same checks pos_in() did.
Done for: jdp, luigi, the good of the world
Diffstat (limited to 'bin/dd/dd.c')
| -rw-r--r-- | bin/dd/dd.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/bin/dd/dd.c b/bin/dd/dd.c index b817b00..b6e0ebb 100644 --- a/bin/dd/dd.c +++ b/bin/dd/dd.c @@ -46,11 +46,12 @@ static char const copyright[] = static char sccsid[] = "@(#)dd.c 8.5 (Berkeley) 4/2/94"; #endif static const char rcsid[] = - "$Id: dd.c,v 1.16 1999/04/25 21:13:33 imp Exp $"; + "$Id: dd.c,v 1.18 1999/06/20 14:58:51 green Exp $"; #endif /* not lint */ #include <sys/param.h> #include <sys/stat.h> +#include <sys/diskslice.h> #include <sys/mtio.h> #include <ctype.h> @@ -224,10 +225,14 @@ getfdtype(io) IO *io; { struct mtget mt; + struct diskslices ds; struct stat sb; if (fstat(io->fd, &sb)) err(1, "%s", io->name); + if ((S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)) && + ioctl(io->fd, DIOCGSLICEINFO, &ds) != -1) + io->flags |= ISDISK; 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) |
