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Use .Dq instead of ``'' in manpage

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Use optimal blocksize for rm -P, instead of always using 8192-byte blocks
to overwrite the file.

Obtained from:	OpenBSD
This commit is contained in:
Kris Kennaway 1999-05-28 12:47:31 +00:00
parent 221f8eaa8d
commit f80db2b881
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=47584
2 changed files with 23 additions and 8 deletions
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7
bin/rm/rm.1
View File

@ -33,7 +33,7 @@
.\" SUCH DAMAGE.
.\"
.\" @(#)rm.1 8.5 (Berkeley) 12/5/94
.\" $Id: rm.1,v 1.12 1998/05/18 06:37:35 charnier Exp $
.\" $Id: rm.1,v 1.13 1999/01/28 17:41:02 wollman Exp $
.\"
.Dd January 28, 1999
.Dt RM 1
@ -109,7 +109,10 @@ The
.Nm
utility removes symbolic links, not the files referenced by the links.
.Pp
It is an error to attempt to remove the files ``.'' and ``..''.
It is an error to attempt to remove the files
.Dq \&.
or
.Dq .. .
.Pp
The
.Nm

24
bin/rm/rm.c
View File

@ -42,12 +42,14 @@ static const char copyright[] =
static char sccsid[] = "@(#)rm.c 8.5 (Berkeley) 4/18/94";
#else
static const char rcsid[] =
"$Id: rm.c,v 1.18 1997/08/07 21:37:39 steve Exp $";
"$Id: rm.c,v 1.19 1999/02/25 22:18:08 jkh Exp $";
#endif
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <err.h>
#include <errno.h>
@ -330,9 +332,10 @@ rm_overwrite(file, sbp)
struct stat *sbp;
{
struct stat sb;
struct statfs fsb;
off_t len;
int fd, wlen;
char buf[8 * 1024];
int bsize, fd, wlen;
char *buf = NULL;
fd = -1;
if (sbp == NULL) {
@ -344,11 +347,16 @@ rm_overwrite(file, sbp)
return;
if ((fd = open(file, O_WRONLY, 0)) == -1)
goto err;
if (fstatfs(fd, &fsb) == -1)
goto err;
bsize = MAX(fsb.f_iosize, 1024);
if ((buf = malloc(bsize)) == NULL)
err(1, "malloc");
#define PASS(byte) { \
memset(buf, byte, sizeof(buf)); \
memset(buf, byte, bsize); \
for (len = sbp->st_size; len > 0; len -= wlen) { \
wlen = len < sizeof(buf) ? len : sizeof(buf); \
wlen = len < bsize ? len : bsize; \
if (write(fd, buf, wlen) != wlen) \
goto err; \
} \
@ -360,10 +368,14 @@ rm_overwrite(file, sbp)
if (fsync(fd) || lseek(fd, (off_t)0, SEEK_SET))
goto err;
PASS(0xff);
if (!fsync(fd) && !close(fd))
if (!fsync(fd) && !close(fd)) {
free(buf);
return;
}
err: eval = 1;
if (buf)
free(buf);
warn("%s", file);
}