use strtoq() instead of atoi() to generate offset argument for lseek()
(Todd Miller)
include <fcntl.h>, <stdlib.h>, and <unistd.h> for prototypes
include <sys/ioctl.h> instead of <sys/sgtty.h>
add explicit return types and prototypes for internal functions
use STD{IN,OUT}_FILENO instead of manifest constants
fix off-by-one buffer overflow error in getstring()
KNFify and RCSid police
This commit is contained in:
mikel
parent
77d5755416
commit
58aea378cf
@ -38,21 +38,28 @@ char copyright[] =
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "from: @(#)rmt.c 5.6 (Berkeley) 6/1/90";*/
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static char rcsid[] = "$Id: rmt.c,v 1.6 1995/04/13 02:07:23 mycroft Exp $";
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#if 0
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static char sccsid[] = "from: @(#)rmt.c 5.6 (Berkeley) 6/1/90";
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#else
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static char rcsid[] = "$NetBSD: rmt.c,v 1.7 1997/07/01 07:42:28 mikel Exp $";
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#endif
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#endif /* not lint */
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/*
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* rmt
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*/
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#include <stdio.h>
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#include <sgtty.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/mtio.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/mtio.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int tape = -1;
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@ -71,6 +78,11 @@ FILE *debug;
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#define DEBUG1(f,a) if (debug) fprintf(debug, f, a)
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#define DEBUG2(f,a1,a2) if (debug) fprintf(debug, f, a1, a2)
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void getstring __P((char *));
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char *checkbuf __P((char *, int));
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void error __P((int));
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int
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main(argc, argv)
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int argc;
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char **argv;
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@ -89,7 +101,7 @@ main(argc, argv)
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top:
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errno = 0;
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rval = 0;
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if (read(0, &c, 1) != 1)
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if (read(STDIN_FILENO, &c, 1) != 1)
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exit(0);
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switch (c) {
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@ -115,7 +127,7 @@ top:
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case 'L':
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getstring(count); getstring(pos);
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DEBUG2("rmtd: L %s %s\n", count, pos);
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rval = lseek(tape, atoi(count), atoi(pos));
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rval = lseek(tape, (off_t)strtoq(count, NULL, 10), atoi(pos));
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if (rval < 0)
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goto ioerror;
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goto respond;
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@ -126,7 +138,7 @@ top:
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DEBUG1("rmtd: W %s\n", count);
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record = checkbuf(record, n);
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for (i = 0; i < n; i += cc) {
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cc = read(0, &record[i], n - i);
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cc = read(STDIN_FILENO, &record[i], n - i);
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if (cc <= 0) {
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DEBUG("rmtd: premature eof\n");
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exit(2);
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@ -146,32 +158,37 @@ top:
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if (rval < 0)
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goto ioerror;
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(void) sprintf(resp, "A%d\n", rval);
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(void) write(1, resp, strlen(resp));
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(void) write(1, record, rval);
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(void) write(STDOUT_FILENO, resp, strlen(resp));
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(void) write(STDOUT_FILENO, record, rval);
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goto top;
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case 'I':
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getstring(op); getstring(count);
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DEBUG2("rmtd: I %s %s\n", op, count);
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{ struct mtop mtop;
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mtop.mt_op = atoi(op);
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mtop.mt_count = atoi(count);
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if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0)
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goto ioerror;
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rval = mtop.mt_count;
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{
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struct mtop mtop;
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mtop.mt_op = atoi(op);
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mtop.mt_count = atoi(count);
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if (ioctl(tape, MTIOCTOP, (char *)&mtop) < 0)
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goto ioerror;
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rval = mtop.mt_count;
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}
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goto respond;
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case 'S': /* status */
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DEBUG("rmtd: S\n");
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{ struct mtget mtget;
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if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0)
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goto ioerror;
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rval = sizeof (mtget);
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(void) sprintf(resp, "A%d\n", rval);
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(void) write(1, resp, strlen(resp));
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(void) write(1, (char *)&mtget, sizeof (mtget));
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goto top;
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{
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struct mtget mtget;
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if (ioctl(tape, MTIOCGET, (char *)&mtget) < 0)
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goto ioerror;
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rval = sizeof (mtget);
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(void) sprintf(resp, "A%d\n", rval);
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(void) write(STDOUT_FILENO, resp, strlen(resp));
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(void) write(STDOUT_FILENO, (char *)&mtget,
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sizeof (mtget));
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goto top;
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}
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default:
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@ -181,21 +198,22 @@ top:
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respond:
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DEBUG1("rmtd: A %d\n", rval);
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(void) sprintf(resp, "A%d\n", rval);
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(void) write(1, resp, strlen(resp));
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(void) write(STDOUT_FILENO, resp, strlen(resp));
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goto top;
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ioerror:
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error(errno);
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goto top;
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}
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void
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getstring(bp)
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char *bp;
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{
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int i;
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char *cp = bp;
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for (i = 0; i < SSIZE; i++) {
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if (read(0, cp+i, 1) != 1)
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for (i = 0; i < SSIZE - 1; i++) {
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if (read(STDIN_FILENO, cp+i, 1) != 1)
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exit(0);
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if (cp[i] == '\n')
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break;
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@ -208,7 +226,6 @@ checkbuf(record, size)
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char *record;
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int size;
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{
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extern char *malloc();
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if (size <= maxrecsize)
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return (record);
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@ -221,16 +238,17 @@ checkbuf(record, size)
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}
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maxrecsize = size;
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while (size > 1024 &&
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setsockopt(0, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size)) < 0)
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setsockopt(0, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size)) < 0)
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size -= 1024;
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return (record);
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}
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void
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error(num)
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int num;
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{
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DEBUG2("rmtd: E %d (%s)\n", num, strerror(num));
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(void) sprintf(resp, "E%d\n%s\n", num, strerror(num));
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(void) write(1, resp, strlen(resp));
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(void) write(STDOUT_FILENO, resp, strlen(resp));
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}
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