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MMV-ORIG.C
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1990-06-13
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/*
mmv 1.01b
Copyright (c) 1990 Vladimir Lanin.
This program may be freely used and copied on a non-commercial basis.
The author assumes no responsibility for any damage or data loss that may
result from the use of this program.
Author may be reached at:
lanin@csd4.cs.nyu.edu
Vladimir Lanin
330 Wadsworth Ave, Apt 6F,
New York, NY 10040
Many thanks to those who have to contributed to the design
and/or coding of this program:
Tom Albrecht: initial Sys V adaptation, consultation, and testing
Carl Mascott: V7 adaptation
Mark Lewis: -n flag idea, consultation.
Dave Bernhold: upper/lowercase conversion idea.
Paul Stodghill: copy option, argv[0] checking.
Frank Fiamingo: consultation and testing.
Tom Jordahl: bug reports and testing.
John Lukas, Hugh Redelmeyer, Barry Nelson, John Sauter,
Phil Dench, John Nelson:
bug reports.
*/
/*
Define SYSV to compile under System V.
Define both SYSV and V7 to compile under V7.
If your System V has a rename() call, define RENAME.
Otherwise, mmv will only be able to rename directories (via option -r)
when running as the super-user.
There is no reason to set the suid bit on mmv if rename() is available.
It is important that mmv not be run with effective uid set
to any value other than either the real uid or the super-user.
Even when running with effective uid set to super-user,
mmv will only perform actions permitted to the real uid.
Define MSDOS to compile under MS-D*S Turbo C 1.5.
If you prefer mmv's output to use /'s instead of \'s under MS-D*S,
define SLASH.
When neither MSDOS nor SYSV are defined, compiles under BSD.
RENAME is automatically defined under MSDOS and BSD.
If you are running a (UN*X) system that provides the
"struct dirent" readdir() directory reading standard,
define DIRENT. Otherwise, mmv uses the BSD-like
"struct direct" readdir().
If your (UN*X) system has neither of these, get the "dirent"
by Doug Gwyn, available as gwyn-dir-lib in volume 9
of the comp.sources.unix archives.
*/
static char USAGE[] =
#ifdef MSDOS
"Usage: \
%s [-m|x%s|c|o|a|z] [-h] [-d|p] [-g|t] [-v|n] [from to]\n\
\n\
Use =N in the ``to'' pattern to get the string matched\n\
by the N'th ``from'' pattern wildcard.\n";
#define OTHEROPT (_osmajor < 3 ? "" : "|r")
#else
"Usage: \
%s [-m|x|r|c|o|a|l%s] [-h] [-d|p] [-g|t] [-v|n] [from to]\n\
\n\
Use =[l|u]N in the ``to'' pattern to get the [lowercase|uppercase of the]\n\
string matched by the N'th ``from'' pattern wildcard.\n\
\n\
A ``from'' pattern containing wildcards should be quoted when given\n\
on the command line.\n";
#ifdef SYSV
#define OTHEROPT ""
#else
#define OTHEROPT "|s"
#endif
#endif
#include <stdio.h>
#include <ctype.h>
#ifdef MSDOS
/* for MS-DOS (under Turbo C 1.5)*/
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <dos.h>
#include <dir.h>
#include <io.h>
#include <fcntl.h>
#define ESC '\''
#ifdef SLASH
#define SLASH '/'
#define OTHERSLASH '\\'
#else
#define SLASH '\\'
#define OTHERSLASH '/'
#endif
typedef int DIRID;
typedef int DEVID;
static char TTY[] = "/dev/con";
extern unsigned _stklen = 10000;
#define RENAME
#else
/* for various flavors of UN*X */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/file.h>
extern char *getenv();
extern long lseek();
extern char *malloc();
#ifdef DIRENT
#include <dirent.h>
typedef struct dirent DIRENTRY;
#else
#ifdef SYSV
#include <sys/dir.h>
/* might need to be changed to <dir.h> */
#else
#include <sys/dir.h>
#endif
typedef struct direct DIRENTRY;
#endif
#define void char /* might want to remove this line */
#ifndef O_BINARY
#define O_BINARY 0
#endif
#ifndef R_OK
#define R_OK 4
#define W_OK 2
#define X_OK 1
#endif
#define ESC '\\'
#define SLASH '/'
typedef ino_t DIRID;
typedef dev_t DEVID;
#define MAXPATH 1024
static char TTY[] = "/dev/tty";
#ifdef V7
/* for Version 7 */
#include <errno.h>
extern int errno;
#define strchr index
extern char *strcpy(), *strchr();
#include <signal.h>
#define O_RDONLY 0
#define O_WRONLY 1
#define O_RDWR 2
#else
/* for System V and BSD */
#include <string.h>
#include <sys/signal.h>
#include <fcntl.h>
#endif
#ifdef SYSV
/* for System V and Version 7*/
struct utimbuf {
time_t actime;
time_t modtime;
};
#define utimes(f, t) utime((f), &(t))
#else
/* for BSD */
#define RENAME
#include <sys/time.h>
#endif
#endif
#define mylower(c) (isupper(c) ? (c)-'A'+'a' : (c))
#define myupper(c) (islower(c) ? (c)-'a'+'A' : (c))
#define STRLEN(s) (sizeof(s) - 1)
#define mydup(s) (strcpy((char *)challoc(strlen(s) + 1, 0), (s)))
#define DFLT 0x001
#define NORMCOPY 0x002
#define OVERWRITE 0x004
#define NORMMOVE 0x008
#define XMOVE 0x010
#define DIRMOVE 0x020
#define NORMAPPEND 0x040
#define ZAPPEND 0x080
#define HARDLINK 0x100
#define SYMLINK 0x200
#define COPY (NORMCOPY | OVERWRITE)
#define MOVE (NORMMOVE | XMOVE | DIRMOVE)
#define APPEND (NORMAPPEND | ZAPPEND)
#define LINK (HARDLINK | SYMLINK)
static char MOVENAME[] = "mmv";
static char COPYNAME[] = "mcp";
static char APPENDNAME[] = "mad";
static char LINKNAME[] = "mln";
#define ASKDEL 0
#define ALLDEL 1
#define NODEL 2
#define ASKBAD 0
#define SKIPBAD 1
#define ABORTBAD 2
#define STAY 0
#define LOWER 1
#define UPPER 2
#define MAXWILD 20
#define MAXPATLEN MAXPATH
#define INITROOM 10
#define CHUNKSIZE 2048
#define BUFSIZE 4096
#define FI_STTAKEN 0x01
#define FI_LINKERR 0x02
#define FI_INSTICKY 0x04
#define FI_NODEL 0x08
#define FI_KNOWWRITE 0x010
#define FI_CANWRITE 0x20
#define FI_ISDIR 0x40
#define FI_ISLNK 0x80
typedef struct {
char *fi_name;
struct rep *fi_rep;
#ifdef MSDOS
char fi_attrib;
#else
short fi_mode;
char fi_stflags;
#endif
} FILEINFO;
#define DI_KNOWWRITE 0x01
#define DI_CANWRITE 0x02
#define DI_CLEANED 0x04
typedef struct {
DEVID di_vid;
DIRID di_did;
unsigned di_nfils;
FILEINFO **di_fils;
char di_flags;
} DIRINFO;
#define H_NODIR 1
#define H_NOREADDIR 2
typedef struct {
char *h_name;
DIRINFO *h_di;
char h_err;
} HANDLE;
#define R_ISX 0x01
#define R_SKIP 0x02
#define R_DELOK 0x04
#define R_ISALIASED 0x08
#define R_ISCYCLE 0x10
#define R_ONEDIRLINK 0x20
typedef struct rep {
HANDLE *r_hfrom;
FILEINFO *r_ffrom;
HANDLE *r_hto;
char *r_nto; /* non-path part of new name */
FILEINFO *r_fdel;
struct rep *r_first;
struct rep *r_thendo;
struct rep *r_next;
char r_flags;
} REP;
typedef struct {
REP *rd_p;
DIRINFO *rd_dto;
char *rd_nto;
unsigned rd_i;
} REPDICT;
typedef struct chunk {
struct chunk *ch_next;
unsigned ch_len;
} CHUNK;
typedef struct {
CHUNK *sl_first;
char *sl_unused;
int sl_len;
} SLICER;
static void init(/* */);
static void procargs(/* int argc, char **argv,
char **pfrompat, char **ptopat */);
static void domatch(/* char *cfrom, char *cto */);
static int getpat(/* */);
static int getword(/* char *buf */);
static void matchpat(/* */);
static int parsepat(/* */);
static int dostage(/* char *lastend, char *pathend,
char **start1, int *len1, int stage, int anylev */);
static int trymatch(/* FILEINFO *ffrom, char *pat */);
static int keepmatch(/* FILEINFO *ffrom, char *pathend,
int *pk, int needslash, int dirs, int fils */);
static int badrep(/* HANDLE *hfrom, FILEINFO *ffrom,
HANDLE **phto, char **pnto, FILEINFO **pfdel, int *pflags */);
static int checkto(/* HANDLE *hfrom, char *f,
HANDLE **phto, char **pnto, FILEINFO **pfdel */);
static char *getpath(/* char *tpath */);
static int badname(/* char *s */);
static FILEINFO *fsearch(/* char *s, DIRINFO *d */);
static int ffirst(/* char *s, int n, DIRINFO *d */);
static HANDLE *checkdir(/* char *p, char *pathend, int which */);
static void takedir(/*
char *p, DIRINFO *di, int sticky
or
struct ffblk *pff, DIRINFO *di
*/);
static int fcmp(/* FILEINFO **pf1, FILEINFO **pf2 */);
static HANDLE *hadd(/* char *n */);
static int hsearch(/* char *n, int which, HANDLE **ph */);
static DIRINFO *dadd(/* DEVID v, DIRID d */);
static DIRINFO *dsearch(/* DEVID v, DIRID d */);
static int match(/* char *pat, char *s, char **start1, int *len1 */);
static void makerep(/* */);
static void checkcollisions(/* */);
static int rdcmp(/* REPDICT *rd1, REPDICT *rd2 */);
static void findorder(/* */);
static void scandeletes(/* int (*pkilldel)(REP *p) */);
static int baddel(/* REP *p */);
static int skipdel(/* REP *p */);
static void nochains(/* */);
static void printchain(/* REP *p */);
static void goonordie(/* */);
static void doreps(/* */);
static long appendalias(/* REP *first, REP *p, int *pprintaliased */);
static int movealias(/* REP *first, REP *p, int *pprintaliased */);
static int snap(/* REP *first, REP *p */);
static void showdone(/* REP *fin */);
static void breakout(/* */);
static int breakrep(/* */);
static void breakstat(/* */);
static void quit(/* */);
static int copymove(/* REP *p */);
static int copy(/* FILENFO *f, long len */);
static int myunlink(/* char *n, FILEINFO *f */);
static int getreply(/* char *m, int failact */);
static void *myalloc(/* unsigned k */);
static void *challoc(/* int k, int which */);
static void chgive(/* void *p, unsigned k */);
static int mygetc(/* */);
static char *mygets(/* char *s, int l */);
#ifdef MSDOS
static int leave(/* */);
static void cleanup(/* */);
#else
static int getstat(/* char *full, FILEINFO *f */);
static int dwritable(/* HANDLE *h */);
static int fwritable(/* char *hname, FILEINFO *f */);
static void memmove(/* void *to, void *from, int k */);
#endif
#ifndef RENAME
static int rename(/* char *from, char *to */);
#endif
static int op, badstyle, delstyle, verbose, noex, matchall;
static int patflags;
static unsigned ndirs = 0, dirroom;
static DIRINFO **dirs;
static unsigned nhandles = 0, handleroom;
static HANDLE **handles;
static HANDLE badhandle = {"\200", NULL, 0};
static HANDLE *(lasthandle[2]) = {&badhandle, &badhandle};
static unsigned nreps = 0;
static REP hrep, *lastrep = &hrep;
static CHUNK *freechunks = NULL;
static SLICER slicer[2] = {{NULL, NULL, 0}, {NULL, NULL, 0}};
static int badreps = 0, paterr = 0, direrr, failed = 0, gotsig = 0, repbad;
static FILE *outfile = stdout;
static char IDF[] = "$$mmvdid.";
static char TEMP[] = "$$mmvtmp.";
static char TOOLONG[] = "(too long)";
static char EMPTY[] = "(empty)";
static char SLASHSTR[] = {SLASH, '\0'};
static char PATLONG[] = "%.40s... : pattern too long.\n";
char from[MAXPATLEN], to[MAXPATLEN];
static int fromlen, tolen;
static char *(stagel[MAXWILD]), *(firstwild[MAXWILD]), *(stager[MAXWILD]);
static int nwilds[MAXWILD];
static int nstages;
char pathbuf[MAXPATH];
char fullrep[MAXPATH + 1];
static char *(start[MAXWILD]);
static int len[MAXWILD];
static char hasdot[MAXWILD];
static REP mistake;
#define MISTAKE (&mistake)
#ifdef MSDOS
static int olddevflag, curdisk, maxdisk;
static struct {
char ph_banner[30];
char ph_name[9];
int ph_dfltop;
int ph_safeid;
int ph_clustoff;
int ph_driveoff;
int ph_drivea;
} patch = {"mmv 1.0 patchable flags", "mmv", XMOVE, 1, 0};
#define DFLTOP (patch.ph_dfltop)
#define CLUSTNO(pff) (*(int *)(((char *)(pff)) + patch.ph_clustoff))
#define DRIVENO(pff) (*(((char *)(pff)) + patch.ph_driveoff) - patch.ph_drivea)
#else
#define DFLTOP XMOVE
static char *home;
static int homelen;
static int uid, euid, oldumask;
static DIRID cwdd = -1;
static DEVID cwdv = -1;
#endif
int main(argc, argv)
int argc;
char *(argv[]);
{
char *frompat, *topat;
init();
procargs(argc, argv, &frompat, &topat);
domatch(frompat, topat);
if (!(op & APPEND))
checkcollisions();
findorder();
if (op & (COPY | LINK))
nochains();
scandeletes(baddel);
goonordie();
if (!(op & APPEND) && delstyle == ASKDEL)
scandeletes(skipdel);
doreps();
return(failed ? 2 : nreps == 0 && (paterr || badreps));
}
static void init()
{
#ifdef MSDOS
curdisk = getdisk();
maxdisk = setdisk(curdisk);
/*
Read device availability : undocumented internal MS-DOS function.
If (_DX == 0) then \dev\ must precede device names.
*/
bdos(0x37, 0, 2);
olddevflag = _DX;
/*
Write device availability: undocumented internal MS-DOS function.
Specify \dev\ must precede device names.
*/
bdos(0x37, 0, 3);
atexit((atexit_t)cleanup);
ctrlbrk((int (*)())breakout);
#else
struct stat dstat;
if ((home = getenv("HOME")) == NULL || strcmp(home, SLASHSTR) == 0)
home = "";
if (!stat(".", &dstat)) {
cwdd = dstat.st_ino;
cwdv = dstat.st_dev;
}
oldumask = umask(0);
euid = geteuid();
uid = getuid();
signal(SIGINT, breakout);
#endif
dirroom = handleroom = INITROOM;
dirs = (DIRINFO **)myalloc(dirroom * sizeof(DIRINFO *));
handles = (HANDLE **)myalloc(handleroom * sizeof(HANDLE *));
ndirs = nhandles = 0;
}
static void procargs(argc, argv, pfrompat, ptopat)
int argc;
char **argv;
char **pfrompat, **ptopat;
{
char *p, c;
char *cmdname = argv[0];
#ifdef MSDOS
#define CMDNAME (patch.ph_name)
#else
#define CMDNAME cmdname
#endif
op = DFLT;
verbose = noex = matchall = 0;
delstyle = ASKDEL;
badstyle = ASKBAD;
for (argc--, argv++; argc > 0 && **argv == '-'; argc--, argv++)
for (p = *argv + 1; *p != '\0'; p++) {
c = mylower(*p);
if (c == 'v' && !noex)
verbose = 1;
else if (c == 'n' && !verbose)
noex = 1;
else if (c == 'h')
matchall = 1;
else if (c == 'd' && delstyle == ASKDEL)
delstyle = ALLDEL;
else if (c == 'p' && delstyle == ASKDEL)
delstyle = NODEL;
else if (c == 'g' && badstyle == ASKBAD)
badstyle = SKIPBAD;
else if (c == 't' && badstyle == ASKBAD)
badstyle = ABORTBAD;
else if (c == 'm' && op == DFLT)
op = NORMMOVE;
else if (c == 'x' && op == DFLT)
op = XMOVE;
else if (c == 'r' && op == DFLT)
op = DIRMOVE;
else if (c == 'c' && op == DFLT)
op = NORMCOPY;
else if (c == 'o' && op == DFLT)
op = OVERWRITE;
else if (c == 'a' && op == DFLT)
op = NORMAPPEND;
#ifdef MSDOS
else if (c == 'z' && op == DFLT)
op = ZAPPEND;
#else
else if (c == 'l' && op == DFLT)
op = HARDLINK;
#ifndef SYSV
else if (c == 's' && op == DFLT)
op = SYMLINK;
#endif
#endif
else {
fprintf(stderr, USAGE, CMDNAME, OTHEROPT);
exit(1);
}
}
if (op == DFLT)
if (strcmp(cmdname, MOVENAME) == 0)
op = XMOVE;
else if (strcmp(cmdname, COPYNAME) == 0)
op = NORMCOPY;
else if (strcmp(cmdname, APPENDNAME) == 0)
op = NORMAPPEND;
else if (strcmp(cmdname, LINKNAME) == 0)
op = HARDLINK;
else
op = DFLTOP;
if (
op & DIRMOVE &&
#ifdef MSDOS
_osmajor < 3
#else
#ifndef RENAME
euid != 0
#else
0
#endif
#endif
) {
fprintf(stderr,
"Unable to do directory renames. Option -r refused.\n");
quit();
}
#ifndef MSDOS
if (euid != uid && !(op & DIRMOVE)) {
setuid(uid);
setgid(getgid());
}
#endif
if (badstyle != ASKBAD && delstyle == ASKDEL)
delstyle = NODEL;
if (argc == 0)
*pfrompat = NULL;
else if (argc == 2) {
*pfrompat = *(argv++);
*ptopat = *(argv++);
}
else {
fprintf(stderr, USAGE, CMDNAME, OTHEROPT);
exit(1);
}
}
static void domatch(cfrom, cto)
char *cfrom, *cto;
{
if (cfrom == NULL)
while (getpat())
matchpat();
else if ((fromlen = strlen(cfrom)) >= MAXPATLEN) {
printf(PATLONG, cfrom);
paterr = 1;
}
else if ((tolen = strlen(cto)) >= MAXPATLEN) {
printf(PATLONG, cto);
paterr = 1;
}
else {
strcpy(from, cfrom);
strcpy(to, cto);
matchpat();
}
}
static int getpat()
{
int c, gotit = 0;
char extra[MAXPATLEN];
patflags = 0;
do {
if ((fromlen = getword(from)) == 0 || fromlen == -1)
goto nextline;
do {
if ((tolen = getword(to)) == 0) {
printf("%s -> ? : missing replacement pattern.\n", from);
goto nextline;
}
if (tolen == -1)
goto nextline;
} while (
tolen == 2 &&
(to[0] == '-' || to[0] == '=') &&
(to[1] == '>' || to[1] == '^')
);
if (getword(extra) == 0)
gotit = 1;
else if (strcmp(extra, "(*)") == 0) {
patflags |= R_DELOK;
gotit = (getword(extra) == 0);
}
nextline:
while ((c = mygetc()) != '\n' && c != EOF)
;
if (c == EOF)
return(0);
} while (!gotit);
return(1);
}
static int getword(buf)
char *buf;
{
int c, prevc, n;
char *p;
p = buf;
prevc = ' ';
n = 0;
while ((c = mygetc()) != EOF && (prevc == ESC || !isspace(c))) {
if (n == -1)
continue;
if (n == MAXPATLEN - 1) {
*p = '\0';
printf(PATLONG, buf);
n = -1;
}
*(p++) = c;
n++;
prevc = c;
}
*p = '\0';
while (c != EOF && isspace(c) && c != '\n')
c = mygetc();
if (c != EOF)
ungetc(c, stdin);
return(n);
}
static void matchpat()
{
if (parsepat())
paterr = 1;
else if (dostage(from, pathbuf, start, len, 0, 0)) {
printf("%s -> %s : no match.\n", from, to);
paterr = 1;
}
}
static int parsepat()
{
char *p, *lastname, c;
int totwilds, instage, x, havedot;
static char TRAILESC[] = "%s -> %s : trailing %c is superfluous.\n";
lastname = from;
#ifdef MSDOS
havedot = 0;
if (from[0] != '\0' && from[1] == ':')
lastname += 2;
#else
if (from[0] == '~' && from[1] == SLASH) {
if ((homelen = strlen(home)) + fromlen > MAXPATLEN) {
printf(PATLONG, from);
return(-1);
}
memmove(from + homelen, from + 1, fromlen);
memmove(from, home, homelen);
lastname += homelen + 1;
}
#endif
totwilds = nstages = instage = 0;
for (p = lastname; (c = *p) != '\0'; p++)
switch (c) {
#ifdef MSDOS
case '.':
havedot = 1;
break;
case OTHERSLASH:
*p = SLASH;
#endif
case SLASH:
#ifdef MSDOS
if (!havedot && lastname != p) {
if (fromlen++ == MAXPATLEN) {
printf(PATLONG, from);
return(-1);
}
memmove(p + 1, p, strlen(p) + 1);
*(p++) = '.';
}
else
havedot = 0;
#endif
lastname = p + 1;
if (instage) {
if (firstwild[nstages] == NULL)
firstwild[nstages] = p;
stager[nstages++] = p;
instage = 0;
}
break;
case ';':
if (lastname != p) {
printf("%s -> %s : badly placed ;.\n", from, to);
return(-1);
}
case '!':
case '*':
case '?':
case '[':
#ifdef MSDOS
if ((hasdot[totwilds] = (c == '!')) != 0)
havedot = 1;
#endif
if (totwilds++ == MAXWILD) {
printf("%s -> %s : too many wildcards.\n", from, to);
return(-1);
}
if (instage) {
nwilds[nstages]++;
if (firstwild[nstages] == NULL)
firstwild[nstages] = p;
}
else {
stagel[nstages] = lastname;
firstwild[nstages] = (c == ';' ? NULL : p);
nwilds[nstages] = 1;
instage = 1;
}
if (c != '[')
break;
while ((c = *(++p)) != ']') {
switch (c) {
case '\0':
printf("%s -> %s : missing ].\n", from, to);
return(-1);
#ifdef MSDOS
case '.':
case ':':
case OTHERSLASH:
#endif
case SLASH:
printf("%s -> %s : '%c' can not be part of [].\n",
from, to, c);
return(-1);
case ESC:
if ((c = *(++p)) == '\0') {
printf(TRAILESC, from, to, ESC);
return(-1);
}
#ifdef MSDOS
default:
if (isupper(c))
*p = c + ('a' - 'A');
#endif
}
}
break;
case ESC:
if ((c = *(++p)) == '\0') {
printf(TRAILESC, from, to, ESC);
return(-1);
}
#ifdef MSDOS
default:
if (isupper(c))
*p = c + ('a' - 'A');
#endif
}
#ifdef MSDOS
if (!havedot && lastname != p) {
if (fromlen++ == MAXPATLEN) {
printf(PATLONG, from);
return(-1);
}
strcpy(p++, ".");
}
#endif
if (instage) {
if (firstwild[nstages] == NULL)
firstwild[nstages] = p;
stager[nstages++] = p;
}
else {
stagel[nstages] = lastname;
nwilds[nstages] = 0;
firstwild[nstages] = p;
stager[nstages++] = p;
}
lastname = to;
#ifdef MSDOS
havedot = 0;
if (to[0] != '\0' && to[1] == ':')
lastname += 2;
#else
if (to[0] == '~' && to[1] == SLASH) {
if ((homelen = strlen(home)) + tolen > MAXPATLEN) {
printf(PATLONG, to);
return(-1);
}
memmove(to + homelen, to + 1, tolen);
memmove(to, home, homelen);
lastname += homelen + 1;
}
#endif
for (p = lastname; (c = *p) != '\0'; p++)
switch (c) {
#ifdef MSDOS
case '.':
havedot = 1;
break;
case OTHERSLASH:
*p = SLASH;
#endif
case SLASH:
if (op & DIRMOVE) {
printf("%s -> %s : no path allowed in target under -r.\n",
from, to);
return(-1);
}
#ifdef MSDOS
if (!havedot && lastname != p) {
if (tolen++ == MAXPATLEN) {
printf(PATLONG, to);
return(-1);
}
memmove(p + 1, p, strlen(p) + 1);
*(p++) = '.';
}
else
havedot = 0;
#endif
lastname = p + 1;
break;
case '=':
c = *(++p);
if (c == 'l' || c == 'u') {
#ifdef MSDOS
strcpy(p, p + 1);
c = *p;
#else
c = *(++p);
#endif
}
if (!isdigit(c)) {
printf("%s -> %s : expected digit (not '%c') after =.\n",
from, to, c);
return(-1);
}
for(x = 0; ;x *= 10) {
x += c - '0';
c = *(p+1);
if (!isdigit(c))
break;
p++;
}
if (x < 1 || x > totwilds) {
printf("%s -> %s : wildcard %d does not exist.\n",
from, to, x);
return(-1);
}
#ifdef MSDOS
if (hasdot[x - 1])
havedot = 1;
#endif
break;
case ESC:
if ((c = *(++p)) == '\0') {
printf(TRAILESC, from, to, ESC);
return(-1);
}
default:
if (
#ifdef MSDOS
c <= ' ' || c >= 127 ||
strchr(":/\\*?[]=+;,\"|<>", c) != NULL
#else
c & 0x80
#endif
) {
printf("%s -> %s : illegal character '%c' (0x%02X).\n",
from, to, c, c);
return(-1);
}
#ifdef MSDOS
if (isupper(c))
*p = c + ('a' - 'A');
#endif
}
#ifdef MSDOS
if (!havedot && lastname != p) {
if (tolen++ == MAXPATLEN) {
printf(PATLONG, to);
return(-1);
}
strcpy(p++, ".");
}
#endif
return(0);
}
static int dostage(lastend, pathend, start1, len1, stage, anylev)
char *lastend, *pathend;
char **start1;
int *len1;
int stage;
int anylev;
{
DIRINFO *di;
HANDLE *h, *hto;
int prelen, litlen, nfils, i, k, flags, try;
FILEINFO **pf, *fdel;
char *nto, *firstesc;
REP *p;
int wantdirs, ret = 1, laststage = (stage + 1 == nstages);
wantdirs = !laststage ||
(op & (DIRMOVE | SYMLINK)) ||
(nwilds[nstages - 1] == 0);
if (!anylev) {
prelen = stagel[stage] - lastend;
if (pathend - pathbuf + prelen >= MAXPATH) {
printf("%s -> %s : search path after %s too long.\n",
from, to, pathbuf);
paterr = 1;
return(1);
}
memmove(pathend, lastend, prelen);
pathend += prelen;
*pathend = '\0';
lastend = stagel[stage];
}
if ((h = checkdir(pathbuf, pathend, 0)) == NULL) {
if (stage == 0 || direrr == H_NOREADDIR) {
printf("%s -> %s : directory %s does not %s.\n",
from, to, pathbuf, direrr == H_NOREADDIR ?
"allow reads/searches" : "exist");
paterr = 1;
}
return(stage);
}
di = h->h_di;
if (*lastend == ';') {
anylev = 1;
*start1 = pathend;
*len1 = 0;
lastend++;
}
nfils = di->di_nfils;
#ifndef MSDOS
if ((op & MOVE) && !dwritable(h)) {
printf("%s -> %s : directory %s does not allow writes.\n",
from, to, pathbuf);
paterr = 1;
goto skiplev;
}
#endif
firstesc = strchr(lastend, ESC);
if (firstesc == NULL || firstesc > firstwild[stage])
firstesc = firstwild[stage];
litlen = firstesc - lastend;
pf = di->di_fils + (i = ffirst(lastend, litlen, di));
if (i < nfils)
do {
if (
(try = trymatch(*pf, lastend)) != 0 &&
(
try == 1 ||
match(lastend + litlen, (*pf)->fi_name + litlen,
start1 + anylev, len1 + anylev)
) &&
keepmatch(*pf, pathend, &k, 0, wantdirs, laststage)
) {
if (!laststage)
ret &= dostage(stager[stage], pathend + k,
start1 + nwilds[stage], len1 + nwilds[stage],
stage + 1, 0);
else {
ret = 0;
makerep();
if (badrep(h, *pf, &hto, &nto, &fdel, &flags))
(*pf)->fi_rep = MISTAKE;
else {
(*pf)->fi_rep = p = (REP *)challoc(sizeof(REP), 1);
p->r_flags = flags | patflags;
p->r_hfrom = h;
p->r_ffrom = *pf;
p->r_hto = hto;
p->r_nto = nto;
p->r_fdel = fdel;
p->r_first = p;
p->r_thendo = NULL;
p->r_next = NULL;
lastrep->r_next = p;
lastrep = p;
nreps++;
}
}
}
i++, pf++;
} while (i < nfils && strncmp(lastend, (*pf)->fi_name, litlen) == 0);
skiplev:
if (anylev)
for (pf = di->di_fils, i = 0; i < nfils; i++, pf++)
if (
*((*pf)->fi_name) != '.' &&
#ifdef MSDOS
((*pf)->fi_attrib & FA_DIREC) &&
#endif
keepmatch(*pf, pathend, &k, 1, 1, 0)
) {
*len1 = pathend - *start1 + k;
ret &= dostage(lastend, pathend + k, start1, len1, stage, 1);
}
return(ret);
}
static int trymatch(ffrom, pat)
FILEINFO *ffrom;
char *pat;
{
char *p;
if (ffrom->fi_rep != NULL)
return(0);
p = ffrom->fi_name;
#ifdef MSDOS
if (*p == '.' || (!matchall && ffrom->fi_attrib & (FA_HIDDEN | FA_SYSTEM)))
return(strcmp(pat, p) == 0);
#else
if (*p == '.')
if (p[1] == '\0' || (p[1] == '.' && p[2] == '\0'))
return(strcmp(pat, p) == 0);
else if (!matchall && *pat != '.')
return(0);
#endif
return(-1);
}
static int keepmatch(ffrom, pathend, pk, needslash, dirs, fils)
FILEINFO *ffrom;
char *pathend;
int *pk;
int needslash;
int dirs, fils;
{
*pk = strlen(ffrom->fi_name);
if (pathend - pathbuf + *pk + needslash >= MAXPATH) {
*pathend = '\0';
printf("%s -> %s : search path %s%s too long.\n",
from, to, pathbuf, ffrom->fi_name);
paterr = 1;
return(0);
}
strcpy(pathend, ffrom->fi_name);
#ifdef MSDOS
if ((ffrom->fi_attrib & FA_DIREC) ? !dirs : !fils)
#else
getstat(pathbuf, ffrom);
if ((ffrom->fi_stflags & FI_ISDIR) ? !dirs : !fils)
#endif
return(0);
if (needslash) {
strcpy(pathend + *pk, SLASHSTR);
(*pk)++;
}
return(1);
}
static int badrep(hfrom, ffrom, phto, pnto, pfdel, pflags)
HANDLE *hfrom;
FILEINFO *ffrom;
HANDLE **phto;
char **pnto;
FILEINFO **pfdel;
int *pflags;
{
char *f = ffrom->fi_name;
*pflags = 0;
if (
#ifdef MSDOS
(ffrom->fi_attrib & FA_DIREC) &&
#else
(ffrom->fi_stflags & FI_ISDIR) &&
#endif
!(op & (DIRMOVE | SYMLINK))
)
printf("%s -> %s : source file is a directory.\n", pathbuf, fullrep);
#ifndef MSDOS
#ifndef SYSV
else if ((ffrom->fi_stflags & FI_LINKERR) && !(op & (MOVE | SYMLINK)))
printf("%s -> %s : source file is a badly aimed symbolic link.\n",
pathbuf, fullrep);
else if ((ffrom->fi_stflags & FI_NODEL) && (op & MOVE))
printf("%s -> %s : no delete permission for source file.\n",
pathbuf, fullrep);
#endif
else if ((op & (COPY | APPEND)) && access(pathbuf, R_OK))
printf("%s -> %s : no read permission for source file.\n",
pathbuf, fullrep);
#endif
else if (
*f == '.' &&
(f[1] == '\0' || strcmp(f, "..") == 0) &&
!(op & SYMLINK)
)
printf("%s -> %s : . and .. can't be renamed.\n", pathbuf, fullrep);
else if (repbad || checkto(hfrom, f, phto, pnto, pfdel) || badname(*pnto))
printf("%s -> %s : bad new name.\n", pathbuf, fullrep);
else if (*phto == NULL)
printf("%s -> %s : %s.\n", pathbuf, fullrep,
#ifndef MSDOS
direrr == H_NOREADDIR ?
"no read or search permission for target directory" :
#endif
"target directory does not exist");
#ifndef MSDOS
else if (!dwritable(*phto))
printf("%s -> %s : no write permission for target directory.\n",
pathbuf, fullrep);
#endif
else if (
(*phto)->h_di->di_vid != hfrom->h_di->di_vid &&
(*pflags = R_ISX, (op & (NORMMOVE | HARDLINK)))
)
printf("%s -> %s : cross-device move.\n",
pathbuf, fullrep);
#ifndef MSDOS
else if (
*pflags && (op & MOVE) &&
!(ffrom->fi_stflags & FI_ISLNK) &&
access(pathbuf, R_OK)
)
printf("%s -> %s : no read permission for source file.\n",
pathbuf, fullrep);
#ifndef SYSV
else if (
(op & SYMLINK) &&
!(
((*phto)->h_di->di_vid == cwdv && (*phto)->h_di->di_did == cwdd) ||
*(hfrom->h_name) == SLASH ||
(*pflags |= R_ONEDIRLINK, hfrom->h_di == (*phto)->h_di)
)
)
printf("%s -> %s : symbolic link would be badly aimed.\n",
pathbuf, fullrep);
#endif
#endif
else
return(0);
badreps++;
return(-1);
}
static int checkto(hfrom, f, phto, pnto, pfdel)
HANDLE *hfrom;
char *f;
HANDLE **phto;
char **pnto;
FILEINFO **pfdel;
{
char tpath[MAXPATH + 1];
char *pathend;
FILEINFO *fdel;
int hlen, tlen;
if (op & DIRMOVE) {
*phto = hfrom;
hlen = strlen(hfrom->h_name);
pathend = fullrep + hlen;
memmove(pathend, fullrep, strlen(fullrep) + 1);
memmove(fullrep, hfrom->h_name, hlen);
if ((fdel = *pfdel = fsearch(pathend, hfrom->h_di)) != NULL) {
*pnto = fdel->fi_name;
#ifndef MSDOS
getstat(fullrep, fdel);
#endif
}
else
*pnto = mydup(pathend);
}
else {
pathend = getpath(tpath);
hlen = pathend - fullrep;
*phto = checkdir(tpath, tpath + hlen, 1);
if (
*phto != NULL &&
*pathend != '\0' &&
(fdel = *pfdel = fsearch(pathend, (*phto)->h_di)) != NULL &&
#ifdef MSDOS
(fdel->fi_attrib & FA_DIREC)
#else
(getstat(fullrep, fdel), fdel->fi_stflags & FI_ISDIR)
#endif
) {
tlen = strlen(pathend);
strcpy(pathend + tlen, SLASHSTR);
tlen++;
strcpy(tpath + hlen, pathend);
pathend += tlen;
hlen += tlen;
*phto = checkdir(tpath, tpath + hlen, 1);
}
if (*pathend == '\0') {
*pnto = f;
if (pathend - fullrep + strlen(f) >= MAXPATH) {
strcpy(fullrep, TOOLONG);
return(-1);
}
strcat(pathend, f);
if (*phto != NULL) {
fdel = *pfdel = fsearch(f, (*phto)->h_di);
#ifndef MSDOS
if (fdel != NULL)
getstat(fullrep, fdel);
#endif
}
}
else if (fdel != NULL)
*pnto = fdel->fi_name;
else
*pnto = mydup(pathend);
}
return(0);
}
static char *getpath(tpath)
char *tpath;
{
char *pathstart, *pathend, c;
#ifdef MSDOS
if (*fullrep != '\0' && fullrep[1] == ':')
pathstart = fullrep + 2;
else
#endif
pathstart = fullrep;
pathend = pathstart + strlen(pathstart) - 1;
while (pathend >= pathstart && *pathend != SLASH)
--pathend;
pathend++;
c = *pathend;
*pathend = '\0';
strcpy(tpath, fullrep);
*pathend = c;
return(pathend);
}
static int badname(s)
char *s;
{
char *ext;
return (
#ifdef MSDOS
*s == ' ' ||
*s == '.' ||
(ext = strchr(s, '.')) - s >= MAXFILE ||
(*ext == '.' && strchr(ext + 1, '.') != NULL) ||
strlen(ext) >= MAXEXT ||
strncmp(s, IDF, STRLEN(IDF)) == 0
#else
(*s == '.' && (s[1] == '\0' || strcmp(s, "..") == 0)) ||
strlen(s) > MAXNAMLEN
#endif
);
}
#ifndef MSDOS
static int getstat(ffull, f)
char *ffull;
FILEINFO *f;
{
struct stat fstat;
int flags;
if ((flags = f->fi_stflags) & FI_STTAKEN)
return(flags & FI_LINKERR);
flags |= FI_STTAKEN;
#ifdef SYSV
if (stat(ffull, &fstat)) {
fprintf(stderr, "Strange, couldn't stat %s.\n", ffull);
quit();
}
#else
if (lstat(ffull, &fstat)) {
fprintf(stderr, "Strange, couldn't lstat %s.\n", ffull);
quit();
}
if ((flags & FI_INSTICKY) && fstat.st_uid != uid && uid != 0)
flags |= FI_NODEL;
if ((fstat.st_mode & S_IFMT) == S_IFLNK) {
flags |= FI_ISLNK;
if (stat(ffull, &fstat)) {
f->fi_stflags = flags | FI_LINKERR;
return(1);
}
}
#endif
if ((fstat.st_mode & S_IFMT) == S_IFDIR)
flags |= FI_ISDIR;
f->fi_stflags = flags;
f->fi_mode = fstat.st_mode;
return(0);
}
static int dwritable(h)
HANDLE *h;
{
char *p = h->h_name, *myp, *lastslash = NULL, *pathend;
char *pw = &(h->h_di->di_flags), r;
if (uid == 0)
return(1);
if (*pw & DI_KNOWWRITE)
return(*pw & DI_CANWRITE);
pathend = p + strlen(p);
if (*p == '\0')
myp = ".";
else if (pathend == p + 1)
myp = SLASHSTR;
else {
lastslash = pathend - 1;
*lastslash = '\0';
myp = p;
}
r = !access(myp, W_OK) ? DI_CANWRITE : 0;
*pw |= DI_KNOWWRITE | r;
if (lastslash != NULL)
*lastslash = SLASH;
return(r);
}
static int fwritable(hname, f)
char *hname;
FILEINFO *f;
{
int r;
if (f->fi_stflags & FI_KNOWWRITE)
return(f->fi_stflags & FI_CANWRITE);
strcpy(fullrep, hname);
strcat(fullrep, f->fi_name);
r = !access(fullrep, W_OK) ? FI_CANWRITE : 0;
f->fi_stflags |= FI_KNOWWRITE | r;
return(r);
}
#endif
static FILEINFO *fsearch(s, d)
char *s;
DIRINFO *d;
{
FILEINFO **fils = d->di_fils;
int nfils = d->di_nfils;
int first, k, last, res;
for(first = 0, last = nfils - 1;;) {
if (last < first)
return(NULL);
k = (first + last) >> 1;
if ((res = strcmp(s, fils[k]->fi_name)) == 0)
return(fils[k]);
if (res < 0)
last = k - 1;
else
first = k + 1;
}
}
static int ffirst(s, n, d)
char *s;
int n;
DIRINFO *d;
{
int first, k, last, res;
FILEINFO **fils = d->di_fils;
int nfils = d->di_nfils;
if (nfils == 0 || n == 0)
return(0);
first = 0;
last = nfils - 1;
for(;;) {
k = (first + last) >> 1;
res = strncmp(s, fils[k]->fi_name, n);
if (first == last)
return(res == 0 ? k : nfils);
else if (res > 0)
first = k + 1;
else
last = k;
}
}
#ifdef MSDOS
/* checkdir and takedir for MS-D*S */
static HANDLE *checkdir(p, pathend, which)
char *p, *pathend;
int which;
{
struct ffblk de;
DIRID d;
DEVID v;
HANDLE *h;
char *dirstart = p;
int fd;
int firstfound;
DIRINFO *di;
if (hsearch(p, which, &h))
if (h->h_di == NULL) {
direrr = h->h_err;
return(NULL);
}
else
return(h);
if (*p == '\0' || p[1] != ':')
v = curdisk;
else {
dirstart += 2;
v = mylower(p[0]) - 'a';
if (v < 0 || v >= maxdisk)
return(NULL);
}
if (patch.ph_safeid) {
strcpy(pathend, IDF);
strcpy(pathend + STRLEN(IDF), "*");
if (findfirst(p, &de, 0)) {
if ((d = ndirs) == 1000) {
fprintf(stderr, "Too many different directories.\n");
quit();
}
sprintf(pathend + STRLEN(IDF), "%03d", d);
if ((fd = _creat(p, 0)) < 0) {
direrr = h->h_err = H_NODIR;
return(NULL);
}
_close(fd);
strcpy(pathend, "*.*");
if (findfirst(p, &de, FA_DIREC | FA_SYSTEM | FA_HIDDEN))
h->h_di = dadd(v, d);
else
takedir(&de, h->h_di = dadd(v, d));
}
else if ((d = atoi(de.ff_name + STRLEN(IDF))) < ndirs)
h->h_di = dirs[d];
else {
strcpy(pathend, de.ff_name);
fprintf(stderr, "Strange dir-id file encountered: %s.\n", p);
quit();
}
*pathend = '\0';
}
else {
strcpy(pathend, "*.*");
firstfound = !findfirst(p, &de, FA_DIREC | FA_SYSTEM | FA_HIDDEN);
*pathend = '\0';
if (firstfound) {
v = DRIVENO(&de);
d = CLUSTNO(&de);
}
else {
strcpy(pathend, "T.D");
if (mkdir(p)) {
*pathend = '\0';
direrr = h->h_err = H_NODIR;
return(NULL);
}
strcpy(pathend, "*.*");
firstfound = !findfirst(p, &de, FA_DIREC | FA_SYSTEM | FA_HIDDEN);
*pathend = '\0';
v = DRIVENO(&de);
d = CLUSTNO(&de);
rmdir(p);
if (!firstfound || d != 0) {
fprintf(stderr,
"Strange, %s does not seem to be a root dir.\n",
p);
quit();
}
}
if ((di = dsearch(v, d)) == NULL)
if (firstfound)
takedir(&de, h->h_di = dadd(v, d));
else
h->h_di = dadd(v, d);
else
h->h_di = di;
}
return(h);
}
static void takedir(pff, di)
struct ffblk *pff;
DIRINFO *di;
{
int cnt, room, namlen, needdot;
FILEINFO **fils, *f;
char c, *p, *p1;
room = INITROOM;
di->di_fils = fils = (FILEINFO **)myalloc(room * sizeof(FILEINFO *));
cnt = 0;
do {
if (strnicmp(pff->ff_name, IDF, STRLEN(IDF)) == 0)
continue;
if (cnt == room) {
room *= 2;
fils = (FILEINFO **)myalloc(room * sizeof(FILEINFO *));
memcpy(fils, di->di_fils, cnt * sizeof(FILEINFO *));
chgive(di->di_fils, cnt * sizeof(FILEINFO *));
di->di_fils = fils;
fils = di->di_fils + cnt;
}
needdot = 1;
for (p = pff->ff_name, namlen = 0; (c = *p) != '\0'; p++, namlen++)
if (c == '.')
needdot = 0;
*fils = f = (FILEINFO *)challoc(sizeof(FILEINFO), 1);
f->fi_name = p = (char *)challoc(namlen + needdot + 1, 0);
for (p1 = pff->ff_name; (c = *p1) != '\0'; p1++)
*(p++) = mylower(c);
if (needdot)
*(p++) = '.';
*p = '\0';
f->fi_attrib = pff->ff_attrib;
f->fi_rep = NULL;
cnt++;
fils++;
} while (findnext(pff) == 0);
qsort(di->di_fils, cnt, sizeof(FILEINFO *), fcmp);
di->di_nfils = cnt;
}
#else
/* checkdir, takedir for Un*x */
static HANDLE *checkdir(p, pathend, which)
char *p, *pathend;
int which;
{
struct stat dstat;
DIRID d;
DEVID v;
DIRINFO **newdirs, *di;
int nfils;
FILEINFO **fils;
char *myp, *lastslash = NULL;
int sticky;
HANDLE *h;
if (hsearch(p, which, &h))
if (h->h_di == NULL) {
direrr = h->h_err;
return(NULL);
}
else
return(h);
if (*p == '\0')
myp = ".";
else if (pathend == p + 1)
myp = SLASHSTR;
else {
lastslash = pathend - 1;
*lastslash = '\0';
myp = p;
}
if (stat(myp, &dstat) || (dstat.st_mode & S_IFMT) != S_IFDIR)
direrr = h->h_err = H_NODIR;
else if (access(myp, R_OK | X_OK))
direrr = h->h_err = H_NOREADDIR;
else {
direrr = 0;
sticky = (dstat.st_mode & S_ISVTX) && uid != 0 && uid != dstat.st_uid ?
FI_INSTICKY : 0;
v = dstat.st_dev;
d = dstat.st_ino;
if ((di = dsearch(v, d)) == NULL)
takedir(myp, di = dadd(v, d), sticky);
}
if (lastslash != NULL)
*lastslash = SLASH;
if (direrr != 0)
return(NULL);
h->h_di = di;
return(h);
}
static void takedir(p, di, sticky)
char *p;
DIRINFO *di;
int sticky;
{
int cnt, room;
DIRENTRY *dp;
FILEINFO *f, **fils;
DIR *dirp;
if ((dirp = opendir(p)) == NULL) {
fprintf(stderr, "Strange, can't scan %s.\n", p);
quit();
}
room = INITROOM;
di->di_fils = fils = (FILEINFO **)myalloc(room * sizeof(FILEINFO *));
cnt = 0;
while ((dp = readdir(dirp)) != NULL) {
if (cnt == room) {
room *= 2;
fils = (FILEINFO **)myalloc(room * sizeof(FILEINFO *));
memcpy(fils, di->di_fils, cnt * sizeof(FILEINFO *));
chgive(di->di_fils, cnt * sizeof(FILEINFO *));
di->di_fils = fils;
fils = di->di_fils + cnt;
}
*fils = f = (FILEINFO *)challoc(sizeof(FILEINFO), 1);
f->fi_name = mydup(dp->d_name);
f->fi_stflags = sticky;
f->fi_rep = NULL;
cnt++;
fils++;
}
closedir(dirp);
qsort(di->di_fils, cnt, sizeof(FILEINFO *), fcmp);
di->di_nfils = cnt;
}
/* end of Un*x checkdir, takedir; back to general program */
#endif
static int fcmp(pf1, pf2)
FILEINFO **pf1, **pf2;
{
return(strcmp((*pf1)->fi_name, (*pf2)->fi_name));
}
static HANDLE *hadd(n)
char *n;
{
HANDLE **newhandles, *h;
if (nhandles == handleroom) {
handleroom *= 2;
newhandles = (HANDLE **)myalloc(handleroom * sizeof(HANDLE *));
memcpy(newhandles, handles, nhandles * sizeof(HANDLE *));
chgive(handles, nhandles * sizeof(HANDLE *));
handles = newhandles;
}
handles[nhandles++] = h = (HANDLE *)challoc(sizeof(HANDLE), 1);
h->h_name = (char *)challoc(strlen(n) + 1, 0);
strcpy(h->h_name, n);
h->h_di = NULL;
return(h);
}
static int hsearch(n, which, pret)
char *n;
int which;
HANDLE **pret;
{
int i;
HANDLE **ph;
if (strcmp(n, lasthandle[which]->h_name) == 0) {
*pret = lasthandle[which];
return(1);
}
for(i = 0, ph = handles; i < nhandles; i++, ph++)
if (strcmp(n, (*ph)->h_name) == 0) {
lasthandle[which] = *pret = *ph;
return(1);
}
lasthandle[which] = *pret = hadd(n);
return(0);
}
static DIRINFO *dadd(v, d)
DEVID v;
DIRID d;
{
DIRINFO *di;
DIRINFO **newdirs;
if (ndirs == dirroom) {
dirroom *= 2;
newdirs = (DIRINFO **)myalloc(dirroom * sizeof(DIRINFO *));
memcpy(newdirs, dirs, ndirs * sizeof(DIRINFO *));
chgive(dirs, ndirs * sizeof(DIRINFO *));
dirs = newdirs;
}
dirs[ndirs++] = di = (DIRINFO *)challoc(sizeof(DIRINFO), 1);
di->di_vid = v;
di->di_did = d;
di->di_nfils = 0;
di->di_fils = NULL;
di->di_flags = 0;
return(di);
}
static DIRINFO *dsearch(v, d)
DEVID v;
DIRID d;
{
int i;
DIRINFO *di;
for(i = 0, di = *dirs; i < ndirs; i++, di++)
if (v == di->di_vid && d == di->di_did)
return(di);
return(NULL);
}
static int match(pat, s, start1, len1)
char *pat, *s, **start1;
int *len1;
{
char c, *olds;
*start1 = 0;
for(;;)
switch (c = *pat) {
case '\0':
case SLASH:
return(*s == '\0');
#ifdef MSDOS
case '!':
*start1 = olds = s;
if ((s = strchr(s, '.')) == NULL)
return(0);
s++;
*len1 = s - olds;
if ((c = *(++pat)) == '\0') {
*len1 += strlen(s);
return(1);
}
for ( ; !match(pat, s, start1 + 1, len1 + 1); (*len1)++, s++)
if (*s == '\0')
return(0);
return(1);
#endif
case '*':
*start1 = s;
if ((c = *(++pat)) == '\0') {
*len1 = strlen(s);
return(1);
}
else {
for (*len1=0; !match(pat, s, start1+1, len1+1); (*len1)++, s++)
if (
#ifdef MSDOS
*s == '.' ||
#endif
*s == '\0'
)
return(0);
return(1);
}
case '?':
if (
#ifdef MSDOS
*s == '.' ||
#endif
*s == '\0'
)
return(0);
*(start1++) = s;
*(len1++) = 1;
pat++;
s++;
break;
case '[':
{
int matched = 0, notin = 0, inrange = 0;
char prevc = '\0';
if ((c = *(++pat)) == '^') {
notin = 1;
c = *(++pat);
}
while (c != ']') {
if (c == '-' && !inrange)
inrange = 1;
else {
if (c == ESC) {
c = *(++pat);
}
if (inrange) {
if (*s >= prevc && *s <= c)
matched = 1;
inrange = 0;
}
else if (c == *s)
matched = 1;
prevc = c;
}
c = *(++pat);
}
if (inrange && *s >= prevc)
matched = 1;
if (!(matched ^ notin))
return(0);
*(start1++) = s;
*(len1++) = 1;
pat++;
s++;
}
break;
case ESC:
c = *(++pat);
default:
if (c == *s) {
pat++;
s++;
}
else
return(0);
}
}
static void makerep()
{
int l, x;
#ifndef MSDOS
int i, cnv;
char *q;
#endif
char *p, *pat, c, pc;
repbad = 0;
p = fullrep;
for (pat = to, l = 0; (c = *pat) != '\0'; pat++, l++) {
if (c == '=') {
c = *(++pat);
#ifndef MSDOS
if (c == 'l') {
cnv = LOWER;
c = *(++pat);
}
else if (c == 'u') {
cnv = UPPER;
c = *(++pat);
}
else
cnv = STAY;
#endif
for(x = 0; ;x *= 10) {
x += c - '0';
c = *(pat+1);
if (!isdigit(c))
break;
pat++;
}
--x;
if (l + len[x] >= MAXPATH)
goto toolong;
#ifdef MSDOS
if (
*(start[x]) == '.' &&
(
p == fullrep ||
*(p - 1) == SLASH
)
) {
repbad = 1;
if (l + STRLEN(EMPTY) >= MAXPATH)
goto toolong;
strcpy(p, EMPTY);
p += STRLEN(EMPTY);
l += STRLEN(EMPTY);
}
#else
switch (cnv) {
case STAY:
#endif
memmove(p, start[x], len[x]);
p += len[x];
#ifndef MSDOS
break;
case LOWER:
for (i = len[x], q = start[x]; i > 0; i--, p++, q++)
*p = mylower(*q);
break;
case UPPER:
for (i = len[x], q = start[x]; i > 0; i--, p++, q++)
*p = myupper(*q);
}
#endif
}
else {
if (c == ESC)
c = *(++pat);
if (l == MAXPATH)
goto toolong;
if (
(
#ifdef MSDOS
c == '.' ||
#endif
c == SLASH
) &&
(
p == fullrep ? pat != to :
(
(
(pc = *(p - 1)) == SLASH
#ifdef MSDOS
|| pc == ':'
#endif
) &&
*(pat - 1) != pc
)
)
) {
repbad = 1;
if (l + STRLEN(EMPTY) >= MAXPATH)
goto toolong;
strcpy(p, EMPTY);
p += STRLEN(EMPTY);
l += STRLEN(EMPTY);
}
*(p++)= c;
}
}
if (p == fullrep) {
strcpy(fullrep, EMPTY);
repbad = 1;
}
*(p++) = '\0';
return;
toolong:
repbad = 1;
strcpy(fullrep, TOOLONG);
}
static void checkcollisions()
{
REPDICT *rd, *prd;
REP *p, *q;
int i, mult, oldnreps;
if (nreps == 0)
return;
rd = (REPDICT *)myalloc(nreps * sizeof(REPDICT));
for (
q = &hrep, p = q->r_next, prd = rd, i = 0;
p != NULL;
q = p, p = p->r_next, prd++, i++
) {
prd->rd_p = p;
prd->rd_dto = p->r_hto->h_di;
prd->rd_nto = p->r_nto;
prd->rd_i = i;
}
qsort(rd, nreps, sizeof(REPDICT), rdcmp);
mult = 0;
for (i = 0, prd = rd, oldnreps = nreps; i < oldnreps; i++, prd++)
if (
i < oldnreps - 1 &&
prd->rd_dto == (prd + 1)->rd_dto &&
strcmp(prd->rd_nto, (prd + 1)->rd_nto) == 0
) {
if (!mult)
mult = 1;
else
printf(" , ");
printf("%s%s", prd->rd_p->r_hfrom->h_name,
prd->rd_p->r_ffrom->fi_name);
prd->rd_p->r_flags |= R_SKIP;
prd->rd_p->r_ffrom->fi_rep = MISTAKE;
nreps--;
badreps++;
}
else if (mult) {
prd->rd_p->r_flags |= R_SKIP;
prd->rd_p->r_ffrom->fi_rep = MISTAKE;
nreps--;
badreps++;
printf(" , %s%s -> %s%s : collision.\n",
prd->rd_p->r_hfrom->h_name, prd->rd_p->r_ffrom->fi_name,
prd->rd_p->r_hto->h_name, prd->rd_nto);
mult = 0;
}
chgive(rd, oldnreps * sizeof(REPDICT));
}
static int rdcmp(rd1, rd2)
REPDICT *rd1, *rd2;
{
int ret;
if (
(ret = rd1->rd_dto - rd2->rd_dto) == 0 &&
(ret = strcmp(rd1->rd_nto, rd2->rd_nto)) == 0
)
ret = rd1->rd_i - rd2->rd_i;
return(ret);
}
static void findorder()
{
REP *p, *q, *t, *first, *pred;
FILEINFO *fi;
for (q = &hrep, p = q->r_next; p != NULL; q = p, p = p->r_next)
if (p->r_flags & R_SKIP) {
q->r_next = p->r_next;
p = q;
}
else if (
(fi = p->r_fdel) == NULL ||
(pred = fi->fi_rep) == NULL ||
pred == MISTAKE
)
continue;
else if ((first = pred->r_first) == p) {
p->r_flags |= R_ISCYCLE;
pred->r_flags |= R_ISALIASED;
if (op & MOVE)
p->r_fdel = NULL;
}
else {
if (op & MOVE)
p->r_fdel = NULL;
while (pred->r_thendo != NULL)
pred = pred->r_thendo;
pred->r_thendo = p;
for (t = p; t != NULL; t = t->r_thendo)
t->r_first = first;
q->r_next = p->r_next;
p = q;
}
}
static void nochains()
{
REP *p, *q;
for (q = &hrep, p = q->r_next; p != NULL; q = p, p = p->r_next)
if (p->r_flags & R_ISCYCLE || p->r_thendo != NULL) {
printchain(p);
printf("%s%s : no chain copies allowed.\n",
p->r_hto->h_name, p->r_nto);
q->r_next = p->r_next;
p = q;
}
}
static void printchain(p)
REP *p;
{
if (p->r_thendo != NULL)
printchain(p->r_thendo);
printf("%s%s -> ", p->r_hfrom->h_name, p->r_ffrom->fi_name);
badreps++;
nreps--;
p->r_ffrom->fi_rep = MISTAKE;
}
static void scandeletes(pkilldel)
int (*pkilldel)();
{
REP *p, *q, *n;
for (q = &hrep, p = q->r_next; p != NULL; q = p, p = p->r_next) {
if (p->r_fdel != NULL)
while ((*pkilldel)(p)) {
nreps--;
p->r_ffrom->fi_rep = MISTAKE;
if ((n = p->r_thendo) != NULL) {
if (op & MOVE)
n->r_fdel = p->r_ffrom;
n->r_next = p->r_next;
q->r_next = p = n;
}
else {
q->r_next = p->r_next;
p = q;
break;
}
}
}
}
static int baddel(p)
REP *p;
{
HANDLE *hfrom = p->r_hfrom, *hto = p->r_hto;
FILEINFO *fto = p->r_fdel;
char *t = fto->fi_name, *f = p->r_ffrom->fi_name;
char *hnf = hfrom->h_name, *hnt = hto->h_name;
if (delstyle == NODEL && !(p->r_flags & R_DELOK) && !(op & APPEND))
printf("%s%s -> %s%s : old %s%s would have to be %s.\n",
hnf, f, hnt, t, hnt, t,
(op & OVERWRITE) ? "overwritten" : "deleted");
else if (fto->fi_rep == MISTAKE)
printf("%s%s -> %s%s : old %s%s was to be done first.\n",
hnf, f, hnt, t, hnt, t);
else if (
#ifdef MSDOS
fto->fi_attrib & FA_DIREC
#else
fto->fi_stflags & FI_ISDIR
#endif
)
printf("%s%s -> %s%s : %s%s%s is a directory.\n",
hnf, f, hnt, t, (op & APPEND) ? "" : "old ", hnt, t);
#ifndef MSDOS
else if ((fto->fi_stflags & FI_NODEL) && !(op & (APPEND | OVERWRITE)))
printf("%s%s -> %s%s : old %s%s lacks delete permission.\n",
hnf, f, hnt, t, hnt, t);
#endif
else if (
(op & (APPEND | OVERWRITE)) &&
#ifdef MSDOS
fto->fi_attrib & FA_RDONLY
#else
!fwritable(hnt, fto)
#endif
) {
printf("%s%s -> %s%s : %s%s %s.\n",
hnf, f, hnt, t, hnt, t,
#ifndef MSDOS
#ifndef SYSV
fto->fi_stflags & FI_LINKERR ?
"is a badly aimed symbolic link" :
#endif
#endif
"lacks write permission");
}
else
return(0);
badreps++;
return(1);
}
static int skipdel(p)
REP *p;
{
if (p->r_flags & R_DELOK)
return(0);
fprintf(stderr, "%s%s -> %s%s : ",
p->r_hfrom->h_name, p->r_ffrom->fi_name,
p->r_hto->h_name, p->r_nto);
if (
#ifdef MSDOS
p->r_fdel->fi_attrib & FA_RDONLY
#else
#ifndef SYSV
!(p->r_ffrom->fi_stflags & FI_ISLNK) &&
#endif
!fwritable(p->r_hto->h_name, p->r_fdel)
#endif
)
fprintf(stderr, "old %s%s lacks write permission. delete it",
p->r_hto->h_name, p->r_nto);
else
fprintf(stderr, "%s old %s%s",
(op & OVERWRITE) ? "overwrite" : "delete",
p->r_hto->h_name, p->r_nto);
return(!getreply("? ", -1));
}
static void goonordie()
{
if ((paterr || badreps) && nreps > 0) {
fprintf(stderr, "Not everything specified can be done.");
if (badstyle == ABORTBAD) {
fprintf(stderr, " Aborting.\n");
exit(1);
}
else if (badstyle == SKIPBAD)
fprintf(stderr, " Proceeding with the rest.\n");
else if (!getreply(" Proceed with the rest? ", -1))
exit(1);
}
}
static void doreps()
{
char *fstart;
int k, printaliased = 0, alias;
REP *first, *p;
long aliaslen;
#ifdef MSDOS
ctrlbrk(breakrep);
#else
signal(SIGINT, breakrep);
#endif
for (first = hrep.r_next, k = 0; first != NULL; first = first->r_next) {
for (p = first; p != NULL; p = p->r_thendo, k++) {
if (gotsig) {
fflush(stdout);
fprintf(stderr, "User break.\n");
printaliased = snap(first, p);
gotsig = 0;
}
strcpy(fullrep, p->r_hto->h_name);
strcat(fullrep, p->r_nto);
if (!noex && (p->r_flags & R_ISCYCLE))
if (op & APPEND)
aliaslen = appendalias(first, p, &printaliased);
else
alias = movealias(first, p, &printaliased);
strcpy(pathbuf, p->r_hfrom->h_name);
fstart = pathbuf + strlen(pathbuf);
if ((p->r_flags & R_ISALIASED) && !(op & APPEND))
sprintf(fstart, "%s%03d", TEMP, alias);
else
strcpy(fstart, p->r_ffrom->fi_name);
if (!noex) {
if (p->r_fdel != NULL && !(op & (APPEND | OVERWRITE)))
myunlink(fullrep, p->r_fdel);
if (
(op & (COPY | APPEND)) ?
copy(p->r_ffrom,
p->r_flags & R_ISALIASED ? aliaslen : -1L) :
#ifndef MSDOS
(op & HARDLINK) ?
link(pathbuf, fullrep) :
#ifndef SYSV
(op & SYMLINK) ?
symlink((p->r_flags & R_ONEDIRLINK) ? fstart : pathbuf,
fullrep) :
#endif
#endif
p->r_flags & R_ISX ?
copymove(p) :
/* move */
rename(pathbuf, fullrep)
) {
fprintf(stderr,
"%s -> %s has failed.\n", pathbuf, fullrep);
printaliased = snap(first, p);
}
}
if (verbose || noex) {
if (p->r_flags & R_ISALIASED && !printaliased)
strcpy(fstart, p->r_ffrom->fi_name);
fprintf(outfile, "%s %c%c %s%s%s\n",
pathbuf,
p->r_flags & R_ISALIASED ? '=' : '-',
p->r_flags & R_ISCYCLE ? '^' : '>',
fullrep,
(p->r_fdel != NULL && !(op & APPEND)) ? " (*)" : "",
noex ? "" : " : done");
}
}
printaliased = 0;
}
if (k != nreps)
fprintf(stderr, "Strange, did %d reps; %d were expected.\n",
k, nreps);
if (k == 0)
fprintf(stderr, "Nothing done.\n");
}
static long appendalias(first, p, pprintaliased)
REP *first, *p;
int *pprintaliased;
{
long ret;
#ifdef MSDOS
int fd;
if ((fd = open(fullrep, O_RDONLY | O_BINARY, 0)) < 0) {
fprintf(stderr, "stat on %s has failed.\n", fullrep);
*pprintaliased = snap(first, p);
}
else {
ret = filelength(fd);
close(fd);
}
#else
struct stat fstat;
if (stat(fullrep, &fstat)) {
fprintf(stderr, "append cycle stat on %s has failed.\n", fullrep);
*pprintaliased = snap(first, p);
}
else
ret = fstat.st_size;
#endif
return(ret);
}
static int movealias(first, p, pprintaliased)
REP *first, *p;
int *pprintaliased;
{
char *fstart;
int ret;
strcpy(pathbuf, p->r_hto->h_name);
fstart = pathbuf + strlen(pathbuf);
strcpy(fstart, TEMP);
for (
ret = 0;
sprintf(fstart + STRLEN(TEMP), "%03d", ret),
fsearch(fstart, p->r_hto->h_di) != NULL;
ret++
)
;
if (rename(fullrep, pathbuf)) {
fprintf(stderr,
"%s -> %s has failed.\n", fullrep, pathbuf);
*pprintaliased = snap(first, p);
}
return(ret);
}
static int snap(first, p)
REP *first, *p;
{
char fname[80];
int redirected = 0;
if (noex)
exit(1);
failed = 1;
#ifdef MSDOS
ctrlbrk((int (*)())breakstat);
#else
signal(SIGINT, breakstat);
#endif
if (
badstyle == ASKBAD &&
isatty(fileno(stdout)) &&
getreply("Redirect standard output to file? ", 0)
) {
redirected = 1;
#ifndef MSDOS
umask(oldumask);
#endif
while (
fprintf(stderr, "File name> "),
(outfile = fopen(mygets(fname, 80), "w")) == NULL
)
fprintf(stderr, "Can't open %s.\n", fname);
}
if (redirected || !verbose)
showdone(p);
fprintf(outfile, "The following left undone:\n");
noex = 1;
return(first != p);
}
static void showdone(fin)
REP *fin;
{
REP *first, *p;
for (first = hrep.r_next; ; first = first->r_next)
for (p = first; p != NULL; p = p->r_thendo) {
if (p == fin)
return;
fprintf(outfile, "%s%s %c%c %s%s : done%s\n",
p->r_hfrom->h_name, p->r_ffrom->fi_name,
p->r_flags & R_ISALIASED ? '=' : '-',
p->r_flags & R_ISCYCLE ? '^' : '>',
p->r_hto->h_name, p->r_nto,
(p->r_fdel != NULL && !(op & APPEND)) ? " (*)" : "");
}
}
static void breakout()
{
fflush(stdout);
fprintf(stderr, "Aborting, nothing done.\n");
exit(1);
}
static int breakrep()
{
gotsig = 1;
return(1);
}
static void breakstat()
{
exit(1);
}
static void quit()
{
fprintf(stderr, "Aborting, nothing done.\n");
exit(1);
}
static int copymove(p)
REP *p;
{
#ifndef MSDOS
#ifndef SYSV
{
int llen;
char linkbuf[MAXPATH];
if ((llen = readlink(pathbuf, linkbuf, MAXPATH - 1)) >= 0) {
linkbuf[llen] = '\0';
return(symlink(linkbuf, fullrep) || myunlink(pathbuf, p->r_ffrom));
}
}
#endif
#endif
return(copy(p->r_ffrom, -1L) || myunlink(pathbuf, p->r_ffrom));
}
#define IRWMASK (S_IREAD | S_IWRITE)
#define RWMASK (IRWMASK | (IRWMASK >> 3) | (IRWMASK >> 6))
static int copy(ff, len)
FILEINFO *ff;
long len;
{
char buf[BUFSIZE], c;
int f, t, k, mode, perm;
#ifdef MSDOS
struct ftime tim;
#else
#ifdef SYSV
struct utimbuf tim;
#else
struct timeval tim[2];
#endif
struct stat fstat;
#endif
if ((f = open(pathbuf, O_RDONLY | O_BINARY, 0)) < 0)
return(-1);
perm =
#ifdef MSDOS
IRWMASK /* will _chmod it later (to get all the attributes) */
#else
(op & (APPEND | OVERWRITE)) ?
(~oldumask & RWMASK) | (ff->fi_mode & ~RWMASK) :
ff->fi_mode
#endif
;
#ifdef V7
if (
!(op & APPEND) ||
(((t = open(fullrep, O_RDWR)) < 0 && errno == ENOENT)
)
t = creat(fullrep, perm);
#else
mode = O_CREAT | (op & APPEND ? 0 : O_TRUNC) |
#ifdef MSDOS
O_BINARY | (op & ZAPPEND ? O_RDWR : O_WRONLY)
#else
O_WRONLY
#endif
;
t = open(fullrep, mode, perm);
#endif
if (t < 0) {
close(f);
return(-1);
}
if (op & APPEND)
lseek(t, 0L, 2);
#ifdef MSDOS
if (op & ZAPPEND && filelength(t) != 0) {
if (lseek(t, -1L, 1) == -1L || read(t, &c, 1) != 1) {
close(f);
close(t);
return(-1);
}
if (c == 26)
lseek(t, -1L, 1);
}
#endif
if ((op & APPEND) && len != -1L) {
while (
len != 0 &&
(k = read(f, buf, len > BUFSIZE ? BUFSIZE : (unsigned)len)) > 0 &&
write(t, buf, k) == k
)
len -= k;
if (len == 0)
k = 0;
}
else
while ((k = read(f, buf, BUFSIZE)) > 0 && write(t, buf, k) == k)
;
if (!(op & (APPEND | OVERWRITE)))
if (
#ifdef MSDOS
getftime(f, &tim) ||
setftime(t, &tim) ||
_chmod(fullrep, 1, ff->fi_attrib) == -1
#else
stat(pathbuf, &fstat) ||
(
#ifdef SYSV
tim.actime = fstat.st_atime,
tim.modtime = fstat.st_mtime,
#else
tim[0].tv_sec = fstat.st_atime,
tim[1].tv_sec = fstat.st_mtime,
#endif
utimes(fullrep, tim)
)
#endif
)
fprintf(stderr, "Strange, couldn't transfer time from %s to %s.\n",
pathbuf, fullrep);
close(f);
close(t);
if (k != 0) {
if (!(op & APPEND))
unlink(fullrep);
return(-1);
}
return(0);
}
#ifndef RENAME
static int rename(from, to)
char *from, *to;
{
if (link(from, to))
return(-1);
if (unlink(from)) {
unlink(to);
return(-1);
}
return(0);
}
#endif
static int myunlink(n, f)
char *n;
FILEINFO *f;
{
#ifdef MSDOS
int a;
if (((a = f->fi_attrib) & FA_RDONLY) && _chmod(n, 1, a & ~FA_RDONLY) < 0) {
fprintf(stderr, "Strange, can not _chmod (or unlink) %s.\n", f);
return(-1);
}
#endif
if (unlink(n)) {
fprintf(stderr, "Strange, can not unlink %s.\n", n);
return(-1);
}
return(0);
}
static int getreply(m, failact)
char *m;
int failact;
{
static FILE *tty = NULL;
int c, r;
fprintf(stderr, m);
if (tty == NULL && (tty = fopen(TTY, "r")) == NULL) {
fprintf(stderr, "Can not open %s to get reply.\n", TTY);
if (failact == -1)
quit();
else
return(failact);
}
for (;;) {
r = fgetc(tty);
if (r == EOF) {
fprintf(stderr, "Can not get reply.\n");
if (failact == -1)
quit();
else
return(failact);
}
if (r != '\n')
while ((c = fgetc(tty)) != '\n' && c != EOF)
;
r = mylower(r);
if (r == 'y' || r == 'n')
return(r == 'y');
fprintf(stderr, "Yes or No? ");
}
}
static void *myalloc(k)
unsigned k;
{
void *ret;
if (k == 0)
return(NULL);
if ((ret = (void *)malloc(k)) == NULL) {
fprintf(stderr, "Insufficient memory.\n");
quit();
}
return(ret);
}
static void *challoc(k, which)
int which;
int k;
{
void *ret;
CHUNK *p, *q;
SLICER *sl = &(slicer[which]);
if (k > sl->sl_len) {
for (
q = NULL, p = freechunks;
p != NULL && (sl->sl_len = p->ch_len) < k;
q = p, p = p->ch_next
)
;
if (p == NULL) {
sl->sl_len = CHUNKSIZE - sizeof(CHUNK *);
p = (CHUNK *)myalloc(CHUNKSIZE);
}
else if (q == NULL)
freechunks = p->ch_next;
else
q->ch_next = p->ch_next;
p->ch_next = sl->sl_first;
sl->sl_first = p;
sl->sl_unused = (char *)&(p->ch_len);
}
sl->sl_len -= k;
ret = (void *)sl->sl_unused;
sl->sl_unused += k;
return(ret);
}
static void chgive(p, k)
void *p;
unsigned k;
{
((CHUNK *)p)->ch_len = k - sizeof(CHUNK *);
((CHUNK *)p)->ch_next = freechunks;
freechunks = (CHUNK *)p;
}
#ifndef MSDOS
static void memmove(to, from, k)
char *to, *from;
unsigned k;
{
if (from > to)
while (k-- != 0)
*(to++) = *(from++);
else {
from += k;
to += k;
while (k-- != 0)
*(--to) = *(--from);
}
}
#endif
static int mygetc()
{
static int lastc = 0;
if (lastc == EOF)
return(EOF);
return(lastc = getchar());
}
static char *mygets(s, l)
char *s;
int l;
{
char *nl;
for (;;) {
if (fgets(s, l, stdin) == NULL)
return(NULL);
if ((nl = strchr(s, '\n')) != NULL)
break;
fprintf(stderr, "Input string too long. Try again> ");
}
*nl = '\0';
return(s);
}
#ifdef MSDOS
static int leave()
{
return(0);
}
static void cleanup()
{
int i;
if (patch.ph_safeid) {
for (i = 0; i < nhandles; i++) {
if (!(handles[i]->h_di->di_flags & DI_CLEANED)) {
sprintf(pathbuf, "%s%s%03d",
handles[i]->h_name, IDF, handles[i]->h_di->di_did);
if (unlink(pathbuf))
fprintf(stderr, "Strange, couldn't unlink %s.\n", pathbuf);
handles[i]->h_di->di_flags |= DI_CLEANED;
}
}
}
/*
Write device availability: undocumented internal MS-D*S function.
Restore previous value.
*/
bdos(0x37, olddevflag, 3);
}
#endif