Ansitar.c - (nf)
root at uiucuxc.UUCP
root at uiucuxc.UUCP
Sat Jul 2 18:31:32 AEST 1983
#N:uiucuxc:12500005:000:19678
uiucuxc!root Jul 1 23:55:00 1983
#
#include <stdio.h>
#include <ctype.h>
#include <time.h>
#include <pwd.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/mtio.h>
/* ansitar -- archiver for ansi-format labelled tapes
*
* ansitar [crxtvbl] [blocksize] [labelsize] file ...
*
* The options are similar to tar:
* c - create a tape
* r - replace (update) a tape
* x - extract files
* t - print table of contents
* v - set verbose mode: for crx, print names; for t print labels
* 0-9 - select drive 0-9
* b - use next argument as a block size
* B - use next argument as tape block size, and
* following argument as line size (for blocking/unblocking)
* l - use next arg as a label size
* U - select upper(out)/lower(in) case translation of names
* R - use RT11 label and name conventions (UGH!)
* S - use RSTS conventions (==RT11 except 80-byte labels)
*
* Warning: The routines skipfile and backspace use nonstandard
* ioctl calls!
*/
#define Skiparg() argc--; argv++
#define MAXLINE 256
#define TRUE 1
#define FALSE 0
#define READ 0
#define READWRITE 2
/* field sizes */
#define LABID 3
#define SERIAL 6
#define OWNER 14
#define FILEID 17
#define SETID 6
#define SECNO 4
#define SEQNO 4
#define GENNO 4
#define GENVSNO 2
#define CRDATE 6
#define EXDATE 6
#define BLOCKS 6
#define SYSTEM 13
/* pad fields (reserved for future use) */
#define VRES1 20
#define VRES2 6
#define VRES3 28
#define HRES1 7
/* Volume header label */
struct vol {
char v_labid[LABID]; /* label identifier "VOL" */
char v_labno; /* label number */
char v_serial[SERIAL]; /* volume serial number */
char v_access; /* accessibility */
char v_res1[VRES1]; /* reserved for future use */
char v_res2[VRES2]; /* reserved for future use */
char v_owner[OWNER]; /* owner identifier */
char v_res3[VRES3]; /* reserved for future use */
char v_stdlabel; /* standard label flag */
};
/* file header/eof label */
struct hdr {
char h_labid[LABID]; /* label identifier: "HDR" or "EOF" */
char h_labno; /* label number */
char h_fileid[FILEID]; /* file identifier */
char h_setid[SETID]; /* file set identifier */
char h_secno[SECNO]; /* file section number */
char h_seqno[SEQNO]; /* file sequence number */
char h_genno[GENNO]; /* generation number */
char h_genvsno[GENVSNO]; /* generation vsn number */
char h_crdate[CRDATE]; /* creation date */
char h_exdate[EXDATE]; /* expiration date */
char h_access; /* accessibility */
char h_blocks[BLOCKS]; /* block count */
char h_system[SYSTEM]; /* system code */
char h_x1[7]; /* reserved */
};
struct vol vol1;
struct hdr hdr1, eof1;
char *tapefile = "/dev/rmt0";
char *buffer, *linebuffer, *malloc(), *index();
char **filetab;
int blocksize = 512;
int linesize = 0;
int bfactor = 0;
int labelsize = sizeof(struct vol);
int tapeunit = 0;
int tf;
char *defvsn = "";
char curdate[CRDATE+1];
char *alongtime = " 99364";
int create, replace, xtract, table, verbose, confirm;
int blocking;
int RT11, Upper;
main(argc, argv)
int argc;
char **argv;
{
char *ap;
int bufsize, openmode;
if (argc < 2)
usage();
Skiparg();
openmode = READ;
ap = argv[0];
Skiparg();
while (*ap) {
switch (*ap) {
case 'c':
create++;
openmode = READWRITE;
break;
case 'r':
replace++;
openmode = READWRITE;
break;
case 'x':
xtract++;
break;
case 't':
table++;
break;
case 'v':
verbose++;
break;
case 'w':
confirm++;
break;
case 'b':
case 'B':
blocking++;
blocksize = atoi(argv[0]);
if (blocksize <= 0)
fatal("bad block size %s\n", argv[0]);
Skiparg();
if (*ap == 'B') {
linesize = atoi(argv[0]);
if (linesize <= 0 ||
blocksize % linesize != 0)
fatal("bad line size %s\n", argv[0]);
bfactor = blocksize / linesize;
Skiparg();
}
break;
case 'l':
labelsize = atoi(argv[0]);
if (labelsize < sizeof(struct hdr))
fatal("label size must be >= %d\n",
sizeof(struct hdr));
Skiparg();
break;
case 'U':
Upper++;
break;
case 'V':
defvsn = argv[0];
if (strlen(defvsn) > SERIAL)
defvsn[SERIAL] = '\0';
Skiparg();
break;
case 'S':
case 'R':
RT11++;
Upper++;
if (*ap == 'R')
labelsize = 512;
break;
default:
if (isdigit(*ap)) {
tapeunit = *ap;
break;
}
fatal("bad flag: %c\n", *ap);
}
ap++;
}
filetab = argv;
filetab[argc] = NULL;
if (tapeunit)
tapefile[strlen(tapefile)-1] = tapeunit;
tf = open(tapefile, openmode);
if (tf < 0)
fatal("can't open %s%s\n", tapefile,
(openmode != READ) ? " for writing" : "");
bufsize = max(blocksize, labelsize);
/*###218 [lint] malloc arg. 1 used inconsistently llib-lc(59) :: ansitar.c(218)%%%*/
buffer = malloc(bufsize + 10);
if (buffer == NULL)
fatal("can't allocate buffer of %d bytes\n", blocksize);
if (linesize) {
/*###222 [lint] malloc arg. 1 used inconsistently llib-lc(59) :: ansitar.c(222)%%%*/
linebuffer = malloc(linesize + 10);
if (linebuffer == NULL)
fatal("can't allocate line buffer of %d bytes\n",
linesize);
}
getansidate(curdate);
if (verbose && blocking) {
printf("Blocksize: %d", blocksize);
if (linesize)
printf(" Linesize: %d", linesize);
putc('\n', stdout);
}
if (create || replace)
doupdate(tf);
else if (xtract)
doxtract(tf);
else if (table)
dotable(tf);
else
usage();
exit(0);
}
usage()
{
fatal("usage: ansitar crxtvbl [blocksize] [labelsize] file ...\n");
}
dotable(tf)
int tf;
{
char fileid[FILEID+1];
int files, n;
int blocks;
long bytes;
getvol(tf, &vol1);
prtvol(&vol1);
putc('\n', stdout);
files = 0;
while (gethdr(tf, &hdr1)) {
files++;
if (verbose)
prthdr(&hdr1);
getmark(tf);
sncpy(fileid, hdr1.h_fileid, FILEID);
blocks = 0;
bytes = 0L;
while ((n = getrec(tf, buffer, blocksize)) > 0) {
blocks++;
bytes += n;
}
geteof(tf, &eof1);
if (verbose) {
prthdr(&eof1);
putc('\n', stdout);
}
getmark(tf);
cmphdreof(&hdr1, &eof1);
printf("t %s %d blocks %D bytes\n", fileid, blocks, bytes);
if (verbose)
putc('\n', stdout);
}
printf("\n%d files\n", files);
}
doxtract(tf)
int tf;
{
char fileid[FILEID+1];
FILE *fp;
long bytes;
int blocks;
int n, xall;
xall = (filetab[0] == NULL);
getvol(tf, &vol1);
if (verbose)
prtvol(&vol1);
while (gethdr(tf, &hdr1)) {
getmark(tf);
sncpy(fileid, hdr1.h_fileid, FILEID);
trimsp(fileid);
if (RT11)
fromRT11(fileid);
if ( (xall || lookup(filetab, fileid, Upper)) &&
checkw('x', fileid) ) {
if (Upper)
makelower(fileid);
fp = fopen(fileid, "w");
if (fp == NULL)
fatal("can't create %s\n", fileid);
blocks = 0;
bytes = 0L;
while ((n = getrec(tf, buffer, blocksize)) > 0) {
if (linesize)
lunblock(fp, buffer, n, linesize);
else
fwrite(buffer, n, 1, fp);
blocks++;
bytes += n;
}
fclose(fp);
if (verbose)
printf("x %s %d blocks %D bytes\n",
fileid, blocks, bytes);
}
else
skipfile(tf);
geteof(tf, &eof1);
cmphdreof(&hdr1, &eof1);
getmark(tf);
}
}
doupdate(tf)
int tf;
{
int i, n;
int blocks;
long bytes;
char line[MAXLINE];
char fileid[FILEID+1];
FILE *fp;
int sequence;
sequence = 0;
if (create) {
initvol(&vol1);
putvol(tf, &vol1);
}
else { /* replace */
getvol(tf, &vol1);
while (gethdr(tf, &hdr1)) {
sncpy(line, hdr1.h_seqno, SEQNO);
sequence = atoi(line);
getmark(tf);
skipfile(tf);
geteof(tf, &eof1);
getmark(tf);
}
backspace(tf);
}
for (i=0; filetab[i] != NULL; i++) {
if (!checkw('a', filetab[i]))
continue;
strncpy(fileid, filetab[i], FILEID);
fileid[FILEID] = '\0';
fp = fopen(fileid, "r");
if (fp == NULL)
fatal("can't open %s\n", fileid);
sequence++;
if (RT11)
toRT11(fileid);
if (Upper)
makeupper(fileid);
inithdr(&hdr1, fileid, sequence);
puthdr(tf, &hdr1);
tapemark(tf);
blocks = 0;
bytes = 0L;
if (linesize)
while ((n = lblock(fp, buffer, linesize, bfactor)) > 0) {
if (n % 2) {
buffer[n] = '\0';
n++;
}
n = write(tf, buffer, n);
blocks++;
bytes += n;
}
else
while ((n = fread(buffer, sizeof(char), blocksize, fp)) > 0) {
if (n % 2) {
buffer[n] = '\0';
n++;
}
n = write(tf, buffer, n);
blocks++;
bytes += n;
}
fclose(fp);
tapemark(tf);
blcopy(hdr1.h_labid, "EOF", LABID);
utoaz(blocks, line, BLOCKS);
blcopy(hdr1.h_blocks, line, BLOCKS);
puthdr(tf, &hdr1);
tapemark(tf);
if (verbose)
printf("a %s %d blocks %D bytes\n",
fileid, blocks, bytes);
}
tapemark(tf);
}
getvol(tf, volp)
int tf;
struct vol *volp;
{
int n;
if (labelsize == sizeof(struct vol))
n = read(tf, (char *)volp, sizeof(struct vol));
else {
n = read(tf, buffer, labelsize);
bcopy((char *)volp, buffer, sizeof(struct vol));
}
if (n != labelsize ||
strncmp(volp->v_labid, "VOL", LABID) != 0 ||
volp->v_labno != '1') {
printf("Warning: Volume label (VOL1) missing\n");
backspace(tf);
return;
}
/* check for RT11 boot block between VOL1 and first HDR1 */
if (RT11) {
/* must have labelsize = 512 */
n = read(tf, buffer, labelsize);
bcopy((char *)&hdr1, buffer, sizeof(struct hdr));
if (n == labelsize && strncmp(hdr1.h_labid, "HDR", LABID) == 0)
backspace(tf);
else
printf("Possible RT11 bootstrap block.\n");
}
}
int
gethdr(tf, hdrp)
int tf;
struct hdr *hdrp;
{
int n;
if (labelsize == sizeof(struct hdr))
n = read(tf, (char *)hdrp, sizeof(struct hdr));
else {
n = read(tf, buffer, labelsize);
bcopy((char *)hdrp, buffer, sizeof(struct hdr));
}
if (n == 0)
return(FALSE);
if (n != labelsize ||
strncmp(hdrp->h_labid, "HDR", LABID) != 0 ||
hdrp->h_labno != '1')
hdrerr(tf, hdrp);
return(TRUE);
}
hdrerr(tf, hdrp)
int tf;
struct hdr *hdrp;
{
int found, n;
printf("Warning: File label (HDR1) error - skipping\n");
found = FALSE;
while (!found) {
skipfile(tf);
if (labelsize == sizeof(struct hdr))
n = read(tf, (char *)hdrp, sizeof(struct hdr));
else {
n = read(tf, buffer, labelsize);
bcopy((char *)hdrp, buffer, sizeof(struct hdr));
}
if ((n == labelsize) &&
(strncmp(hdrp->h_labid, "HDR", LABID) == 0))
found = TRUE;
}
}
geteof(tf, eofp)
int tf;
struct hdr *eofp;
{
int n;
if (labelsize == sizeof(struct hdr))
/*###526 [lint] read arg. 2 used inconsistently llib-lc(41) :: ansitar.c(526)%%%*/
n = read(tf, eofp, sizeof(struct hdr));
else {
n = read(tf, buffer, labelsize);
bcopy((char *)eofp, buffer, sizeof(struct hdr));
}
if (n != labelsize ||
strncmp(eofp->h_labid, "EOF", LABID) != 0 ||
eofp->h_labno != '1')
printf("Warning: File label (EOF1) error\n");
}
int
getrec(f, buf, size)
int f;
char *buf;
int size;
{
int n;
n = read(f, buf, size);
if (n < 0)
fatal("Read error (record may be larger than %db)\n",
size);
return(n);
}
getmark(tf)
int tf;
{
char rec[sizeof(struct hdr)];
int n;
n = read(tf, rec, sizeof(rec));
if (n == 0)
return;
/* skip HDR2-9 */
while (n == sizeof(struct hdr) &&
(strncmp("HDR", rec, 3)==0 || strncmp("EOF", rec, 3)==0)) {
n = read(tf, rec, sizeof(rec));
if (n == 0)
return;
}
printf("Warning: tape mark missing\n");
}
cmphdreof(hdrp, eofp)
struct hdr *hdrp, *eofp;
{
char line[MAXLINE];
static int len = FILEID+SETID+SECNO+SEQNO+GENNO+GENVSNO+
CRDATE+EXDATE+1;
if (strncmp(hdrp->h_fileid, eofp->h_fileid, len) != 0 ||
strncmp(hdrp->h_system, eofp->h_system, SYSTEM) != 0) {
sncpy(line, hdrp->h_fileid, FILEID);
fprintf(stderr, "Warning: HDR and EOF labels for %s disagree\n",
line);
}
}
putvol(tf, volp)
int tf;
struct vol *volp;
{
int len;
if (labelsize == sizeof(struct vol)) {
/*###606 [lint] write arg. 2 used inconsistently llib-lc(57) :: ansitar.c(606)%%%*/
write(tf, volp, sizeof(struct vol));
return;
}
bcopy(buffer, (char *)volp, sizeof(struct vol));
len = labelsize - sizeof(struct vol);
blcopy(&buffer[sizeof(struct vol)], "", len);
write(tf, buffer, labelsize);
}
puthdr(tf, hdrp)
int tf;
struct hdr *hdrp;
{
int len;
if (labelsize == sizeof(struct hdr)) {
/*###625 [lint] write arg. 2 used inconsistently llib-lc(57) :: ansitar.c(625)%%%*/
write(tf, hdrp, sizeof(struct hdr));
return;
}
bcopy(buffer, (char *)hdrp, sizeof(struct hdr));
len = labelsize - sizeof(struct hdr);
blcopy(&buffer[sizeof(struct hdr)], "", len);
write(tf, buffer, labelsize);
}
prtvol(volp)
struct vol *volp;
{
char labid[LABID+1], serial[SERIAL+1], owner[OWNER+1];
sncpy(labid, volp->v_labid, LABID);
sncpy(serial, volp->v_serial, SERIAL);
sncpy(owner, volp->v_owner, OWNER);
printf("Volume label:\n");
printf("\tLabel: %s%c Serial: %s Access: %c\n",
labid, volp->v_labno, serial, volp->v_access);
printf("\tOwner: %s Standard: %c\n",
owner, volp->v_stdlabel);
}
prthdr(hdrp)
struct hdr *hdrp;
{
char labid[LABID+1], fileid[FILEID+1], setid[SETID+1];
char secno[SECNO+1], seqno[SEQNO+1];
char genno[GENNO+1], genvsno[GENVSNO+1];
char crdate[CRDATE+1], exdate[EXDATE+1];
char blocks[BLOCKS+1], system[SYSTEM+1];
sncpy(labid, hdrp->h_labid, LABID);
sncpy(fileid, hdrp->h_fileid, FILEID);
sncpy(setid, hdrp->h_setid, SETID);
sncpy(secno, hdrp->h_secno, SECNO);
sncpy(seqno, hdrp->h_seqno, SEQNO);
sncpy(genno, hdrp->h_genno, GENNO);
sncpy(genvsno, hdrp->h_genvsno, GENVSNO);
sncpy(crdate, hdrp->h_crdate, CRDATE);
sncpy(exdate, hdrp->h_exdate, EXDATE);
sncpy(blocks, hdrp->h_blocks, BLOCKS);
sncpy(system, hdrp->h_system, SYSTEM);
printf("File Label:\n");
printf("\tLabel: %s%c File: %s\n",
labid, hdrp->h_labno, fileid);
printf("\tSet: %s Section: %s Sequence: %s\n",
setid, secno, seqno);
printf("\tGeneration: %s Generation Version: %s\n",
genno, genvsno);
printf("\tCreated: %s Expires: %s Access: %c\n",
crdate, exdate, hdrp->h_access);
printf("\tBlocks: %s System: %s\n",
blocks, system);
}
initvol(volp)
struct vol *volp;
{
struct passwd *passwp, *getpwuid();
/*###697 [lint] blcopy arg. 1 used inconsistently ansitar.c(799) :: ansitar.c(697)%%%*/
blcopy(volp, "", sizeof(struct vol));
blcopy(volp->v_labid, "VOL", LABID);
volp->v_labno = '1';
blcopy(volp->v_serial, defvsn, SERIAL);
volp->v_access = ' ';
passwp = getpwuid(getuid());
blcopy(volp->v_owner, passwp->pw_name, OWNER);
volp->v_stdlabel = '1';
}
inithdr(hdrp, filename, seq)
struct hdr *hdrp;
char *filename;
int seq;
{
char seqno[SEQNO+1];
/*###718 [lint] blcopy arg. 1 used inconsistently ansitar.c(799) :: ansitar.c(718)%%%*/
blcopy(hdrp, "", sizeof(struct hdr));
blcopy(hdrp->h_labid, "HDR", LABID);
hdrp->h_labno = '1';
blcopy(hdrp->h_fileid, filename, FILEID);
blcopy(hdrp->h_secno, "0001", SECNO);
utoaz(seq, seqno, SEQNO);
blcopy(hdrp->h_seqno, seqno, SEQNO);
blcopy(hdrp->h_genno, "0001", GENNO);
blcopy(hdrp->h_genvsno, "00", GENVSNO);
blcopy(hdrp->h_crdate, curdate, CRDATE);
blcopy(hdrp->h_exdate, alongtime, EXDATE);
blcopy(hdrp->h_blocks, "000000", BLOCKS);
blcopy(hdrp->h_system, "Unix V7", SYSTEM);
}
int
lblock(fp, buffer, lsize, bfactor)
FILE *fp;
char *buffer;
int lsize, bfactor;
{
register char *lp, *linelim;
register int c;
int i;
char *bp;
bp = buffer;
for (i=0; i<bfactor; i++) {
lp = bp;
linelim = &lp[lsize];
while (lp < linelim) {
c = getc(fp);
if (c == '\n' || c == EOF)
break;
*lp++ = c;
}
if (c == EOF && lp == bp)
break;
while (c != '\n' && c != EOF)
c = getc(fp);
while (lp < linelim)
*lp++ = ' ';
bp += lsize;
}
return(bp - buffer);
}
lunblock(fp, buffer, blen, lsize)
FILE *fp;
char *buffer;
int blen, lsize;
{
register char *lastp, *bp1;
char *bp, *buflim;
buflim = &buffer[blen];
bp = buffer;
while (bp < buflim) {
lastp = &bp[lsize-1];
while (lastp >= bp && isspace(*lastp))
lastp--;
for (bp1=bp; bp1<=lastp; bp1++)
putc(*bp1, fp);
putc('\n', fp);
bp += lsize;
}
}
blcopy(dest, src, n)
char *dest, *src;
int n;
/*###799 [lint] blcopy arg. 1 used inconsistently ansitar.c(799) :: ansitar.c(718)%%%*/
/*###799 [lint] blcopy arg. 1 used inconsistently ansitar.c(799) :: ansitar.c(697)%%%*/
{
int i;
i=0;
while (i < n && *src) {
*dest++ = *src++;
i++;
}
while (i++ < n)
*dest++ = ' ';
}
sncpy(dest, src, n)
char *dest, *src;
int n;
{
int i;
i = 0;
while (*src && i<n) {
*dest++ = *src++;
i++;
}
*dest = '\0';
}
utoaz(n, buf, size)
int n;
char *buf;
int size;
{
char *p;
p = &buf[size-1];
while (p >= buf && n != 0) {
*p = '0' + (n % 10);
n /= 10;
p--;
}
while (p >= buf) {
*p = '0';
p--;
}
}
tapemark(tf)
int tf;
{
struct mtop mtop;
mtop.mt_count = 1;
mtop.mt_op = MTWEOF;
ioctl(tf, MTIOCTOP, &mtop);
}
skipfile(tf)
int tf;
{
struct mtop mtop;
mtop.mt_count = 1;
mtop.mt_op = MTFSF;
ioctl(tf, MTIOCTOP, &mtop);
}
backspace(tf)
int tf;
{
struct mtop mtop;
mtop.mt_count = 1;
mtop.mt_op = MTBSR;
ioctl(tf, MTIOCTOP, &mtop);
}
/* getansidate -- return the current date in ansi format
*
* Ansi dates are strings of the form " yyddd" where
* yy = the year and ddd = the day in the year. There must
* be an initial blank.
*/
getansidate(curdate)
char *curdate;
{
time_t now, time();
struct tm *timep, *localtime();
/*###901 [lint] time value declared inconsistently llib-lc(54) :: ansitar.c(901)%%%*/
/*###901 [lint] time value used inconsistently llib-lc(54) :: ansitar.c(901)%%%*/
/*###901 [lint] time arg. 1 used inconsistently llib-lc(54) :: ansitar.c(901)%%%*/
now = time(NULL);
/*###902 [lint] localtime arg. 1 used inconsistently llib-lc(90) :: ansitar.c(902)%%%*/
timep = localtime(&now);
curdate[0] = ' ';
utoaz(timep->tm_year, &curdate[1], 2);
utoaz(timep->tm_yday, &curdate[3], 3);
curdate[6] = '\0';
}
int
lookup(tab, name, Upper)
char *tab[];
char *name;
int Upper;
{
int i;
char lower[MAXLINE];
if (Upper) {
strcpy(lower, name);
makelower(lower);
}
for (i=0; tab[i] != NULL; i++)
if (strcmp(name, tab[i]) == 0 ||
(Upper && strcmp(lower, tab[i])==0))
return(TRUE);
return(FALSE);
}
makelower(s)
char *s;
{
register char *p;
p = s;
while (*p) {
if (isupper(*p))
*p = tolower(*p);
p++;
}
}
makeupper(s)
char *s;
{
register char *p;
p = s;
while (*p) {
if (islower(*p))
*p = toupper(*p);
p++;
}
}
int
haslower(p)
register char *p;
{
while (*p) {
if (islower(*p))
return(TRUE);
p++;
}
return(FALSE);
}
toRT11(name)
char *name;
{
char buf[32], *extp;
extp = index(name, '.');
if (extp != NULL) {
*extp = '\0';
extp++;
}
blcopy(buf, name, 6);
buf[6] = '.';
if (extp != NULL)
blcopy(&buf[7], extp, 3);
else
strcpy(&buf[7], "ext");
buf[10] = '\0';
/*###1001 [lint] strcpy value declared inconsistently llib-lc(49) :: ansitar.c(1001)%%%*/
strcpy(name, buf);
}
fromRT11(name)
char *name;
{
char *op, *np;
op = np = name;
while (*op) {
if (!isspace(*op))
*np++ = *op;
op++;
}
*np = '\0';
}
trimsp(s)
char *s;
{
register char *p;
p = &s[strlen(s)-1];
while (p >= s && isspace(*p))
p--;
*++p = '\0';
}
bcopy(dest, src, size)
char *dest, *src;
int size;
{
while (size-- > 0)
*dest++ = *src++;
}
int
max(a, b)
int a, b;
{
if (a > b)
return(a);
return(b);
}
int
checkw(c, name)
char c, *name;
{
if (!confirm)
return(TRUE);
printf("%c %s:", c, name);
c = getchar();
if (c != '\n')
while ((c = getchar()) != '\n')
;
return(c == 'y' || c == 'Y');
}
/* VARARGS */
fatal(s, a1, a2, a3, a4)
char *s;
{
fprintf(stderr, "ansitar: ");
fprintf(stderr, s, a1, a2, a3, a4);
exit(1);
}
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