/* * dosdisk.c * * MSDOS disk accessing module */ #include "machine.h" #include #include #include #include #ifndef NOUNISTDH #include #endif #ifndef NOSTDLIBH #include #endif #ifdef USETIMEH #include #endif #ifdef NOUID_T typedef u_short uid_t; typedef u_short gid_t; #endif #if MSDOS && defined (_NOUSELFN) && !defined (_NODOSDRIVE) #define _NODOSDRIVE #endif #if MSDOS #include #include "unixemu.h" #include "unixdisk.h" #include #else /* !MSDOS */ #include #include # ifdef USEUTIME # include # endif # ifdef USEDIRECT # include # define dirent direct # else # include # endif #endif /* !MSDOS */ #ifdef LINUX #include #include #include # ifndef BLKFLSBUF # include # endif #endif /* LINUX */ #include "dosdisk.h" #include "kctype.h" #ifndef _NODOSDRIVE #ifdef HDDMOUNT #include #define D_SECSIZE(dl) (dl).d_secsize # ifdef BSD4 # ifdef NETBSD # define OMIT_FSTYPENUMS /* For NetBSD >=3.1 */ # endif # include # else /* !BSD4 */ # ifdef SOLARIS # include # include # define DIOCGDINFO DKIOCGGEOM # define disklabel dk_geom # define d_ntracks dkg_nhead # define d_nsectors dkg_nsect # endif # ifdef LINUX # include # define DIOCGDINFO HDIO_GETGEO # define disklabel hd_geometry # define d_ntracks heads # define d_nsectors sectors # undef D_SECSIZE # define D_SECSIZE(dl) 512 # endif # endif /* !BSD4 */ #endif /* HDDMOUNT */ #ifndef MOUNTED #define MOUNTED "/etc/mtab" #endif #if defined (USELLSEEK) && !defined (_syscall5) #include #define _llseek(f,h,l,r,w) syscall(SYS__llseek, f, h, l, r, w) #undef _syscall5 #endif #ifdef NOERRNO extern int errno; #endif #ifndef ENOTEMPTY # ifdef ENFSNOTEMPTY # define ENOTEMPTY ENFSNOTEMPTY # else # define ENOTEMPTY EACCES # endif #endif /* !ENOTEMPTY */ #ifndef EPERM #define EPERM EACCES #endif #ifndef ENODEV #define ENODEV EACCES #endif #ifndef EIO #define EIO ENODEV #endif #ifndef EFAULT #define EFAULT ENODEV #endif #ifndef ENOSPC #define ENOSPC EACCES #endif #ifndef EISDIR #define EISDIR EACCES #endif #ifndef EROFS #define EROFS EACCES #endif #ifndef ENAMETOOLONG #define ENAMETOOLONG ERANGE #endif #ifndef O_BINARY #define O_BINARY 0 #endif #ifndef O_ACCMODE #define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR) #endif #define KC_SJIS1 0001 #define KC_SJIS2 0002 #define KC_EUCJP 0010 #define strsize(s) ((int)sizeof(s) - 1) #define arraysize(a) ((int)((u_int)sizeof(a) / (u_int)sizeof(*(a)))) #define EXTCOM "COM" #define EXTEXE "EXE" #define EXTBAT "BAT" #define reterr(c) {errno = doserrno; return(c);} #define S_IEXEC_ALL (S_IEXEC | (S_IEXEC >> 3) | (S_IEXEC >> 6)) #define ENDCLUST ((long)(0x0fffffff)) #define ERRCLUST ((long)(0x0ffffff7)) #define ROOTCLUST ((long)(0x10000000)) #if (GETTODARGS == 1) #define gettimeofday2(tv, tz) gettimeofday(tv) #else #define gettimeofday2(tv, tz) gettimeofday(tv, tz) #endif #if MSDOS && defined (FD) extern int _dospath __P_((CONST char *)); #define __dospath _dospath #else #define __dospath(p) ((isalpha2(*(p)) && (p)[1] == ':') ? *(p) : 0) #endif #ifndef FD #define getconstvar(s) (char *)getenv(s) #endif #ifdef FD extern int newdup __P_((int)); extern char *gendospath __P_((char *, int, int)); extern char *strdelim __P_((CONST char *, int)); extern char *strrdelim __P_((CONST char *, int)); extern char *strrdelim2 __P_((CONST char *, CONST char *)); extern int isdelim __P_((CONST char *, int)); #if MSDOS extern char *strcatdelim __P_((char *)); #endif extern char *strcatdelim2 __P_((char *, CONST char *, CONST char *)); extern int strcasecmp2 __P_((CONST char *, CONST char *)); extern int isdotdir __P_((CONST char *)); extern time_t timelocal2 __P_((struct tm *)); extern u_int unifysjis __P_((u_int, int)); extern u_int cnvunicode __P_((u_int, int)); #else /* !FD */ #ifndef NOTZFILEH #include #endif #define newdup(n) (n) static char *NEAR gendospath __P_((char *, int, int)); static char *NEAR strdelim __P_((CONST char *, int)); static char *NEAR strrdelim __P_((CONST char *, int)); static char *NEAR strrdelim2 __P_((CONST char *, CONST char *)); static int NEAR isdelim __P_((CONST char *, int)); #if MSDOS static char *NEAR strcatdelim __P_((char *)); #endif static char *NEAR strcatdelim2 __P_((char *, CONST char *, CONST char *)); static int NEAR strcasecmp2 __P_((CONST char *, CONST char *)); static int NEAR isdotdir __P_((CONST char *)); #if !MSDOS && !defined (NOTZFILEH) \ && !defined (USEMKTIME) && !defined (USETIMELOCAL) static long NEAR char2long __P_((CONST u_char *)); static int NEAR tmcmp __P_((CONST struct tm *, CONST struct tm *)); #endif #if !defined (USEMKTIME) && !defined (USETIMELOCAL) static time_t NEAR timegm2 __P_((CONST struct tm *)); static long NEAR gettimezone __P_((CONST struct tm *, time_t)); #endif static time_t NEAR timelocal2 __P_((struct tm *)); static int NEAR openunitbl __P_((CONST char *)); static u_int NEAR unifysjis __P_((u_int, int)); static u_int NEAR cnvunicode __P_((u_int, int)); #define Xopen open #define Xclose(f) ((close(f)) ? -1 : 0) #define Xlseek lseek #define sureread read #define getword(s, n) (((u_short)((s)[(n) + 1]) << 8) | (s)[n]) #define skread(f,o,s,n) (Xlseek(f, o, L_SET) >= (off_t)0 \ && sureread(f, s, n) == n) #define SJ_UDEF 0x81ac /* GETA */ #define U2_UDEF 0x3013 /* GETA */ #define UNICODETBL "fd-unicd.tbl" #define MINUNICODE 0x00a7 #define MAXUNICODE 0xffe5 #define MINKANJI 0x8140 #define MAXKANJI 0xfc4b #endif /* !FD */ #ifdef USELLSEEK static l_off_t NEAR Xllseek __P_((int, l_off_t, int)); #else #define Xllseek lseek #endif #if !MSDOS static int NEAR sectseek __P_((CONST devstat *, u_long)); #endif static int NEAR realread __P_((CONST devstat *, u_long, u_char *, int)); static int NEAR realwrite __P_((CONST devstat *, u_long, CONST u_char *, int)); static int NEAR killcache __P_((CONST devstat *, int, int)); static int NEAR flushcache __P_((CONST devstat *)); static int NEAR shiftcache __P_((CONST devstat *, int, int)); static int NEAR cachecpy __P_((int, int, int, int)); static int NEAR uniqcache __P_((CONST devstat *, int, u_long, u_long)); static int NEAR appendcache __P_((int, CONST devstat *, u_long, CONST u_char *, int, int)); static int NEAR insertcache __P_((int, CONST devstat *, u_long, CONST u_char *, int, int)); static int NEAR overwritecache __P_((int, CONST devstat *, u_long, CONST u_char *, int, int)); static int NEAR savecache __P_((CONST devstat *, u_long, CONST u_char *, int, int)); static int NEAR loadcache __P_((CONST devstat *, u_long, u_char *, int)); static long NEAR sectread __P_((CONST devstat *, u_long, u_char *, int)); static long NEAR sectwrite __P_((CONST devstat *, u_long, CONST u_char *, int)); static int NEAR availfat __P_((CONST devstat *)); static int NEAR readfat __P_((devstat *)); static int NEAR writefat __P_((CONST devstat *)); static long NEAR getfatofs __P_((CONST devstat *, long)); static u_char *NEAR readtmpfat __P_((CONST devstat *, long, int)); static long NEAR getfatent __P_((CONST devstat *, long)); static int NEAR putfatent __P_((devstat *, long, long)); static u_long NEAR clust2sect __P_((CONST devstat *, long)); static long NEAR clust32 __P_((CONST devstat *, CONST dent_t *)); static long NEAR newclust __P_((CONST devstat *)); static long NEAR clustread __P_((CONST devstat *, u_char *, long)); static long NEAR clustwrite __P_((devstat *, CONST u_char *, long)); static long NEAR clustexpand __P_((devstat *, long, int)); static int NEAR clustfree __P_((devstat *, long)); #if !MSDOS static int NEAR _readbpb __P_((devstat *, CONST bpb_t *)); #endif static int NEAR readbpb __P_((devstat *, int)); #ifdef HDDMOUNT static l_off_t *NEAR _readpt __P_((l_off_t, l_off_t, int, int, int, int)); #endif static int NEAR opendev __P_((int)); static int NEAR closedev __P_((int)); static int NEAR calcsum __P_((CONST u_char *)); static u_int NEAR lfnencode __P_((u_int, u_int)); static u_int NEAR lfndecode __P_((u_int, u_int)); #if !MSDOS static int NEAR transchar __P_((int)); static int NEAR detranschar __P_((int)); #endif static int NEAR sfntranschar __P_((int)); static int NEAR cmpdospath __P_((CONST char *, CONST char *, int, int)); static char *NEAR getdosname __P_((char *, CONST u_char *, CONST u_char *)); static u_char *NEAR putdosname __P_((u_char *, CONST char *, int)); static u_int NEAR getdosmode __P_((u_int)); static u_int NEAR putdosmode __P_((u_int)); static time_t NEAR getdostime __P_((u_int, u_int)); static int NEAR putdostime __P_((u_char *, time_t)); static int NEAR getdrive __P_((CONST char *)); static int NEAR parsepath __P_((char *, CONST char *, int)); static int NEAR seekdent __P_((dosDIR *, dent_t *, long, long)); static int NEAR readdent __P_((dosDIR *, dent_t *, int)); static dosDIR *NEAR _dosopendir __P_((CONST char *, char *, int)); static int NEAR _dosclosedir __P_((dosDIR *)); static struct dosdirent *NEAR _dosreaddir __P_((dosDIR *, int)); static struct dosdirent *NEAR finddirent __P_((dosDIR *, CONST char *, int, int)); static dosDIR *NEAR splitpath __P_((CONST char **, char *, int)); static int NEAR getdent __P_((CONST char *, int *)); static int NEAR writedent __P_((int)); static int NEAR expanddent __P_((int)); static int NEAR creatdent __P_((CONST char *, int)); static int NEAR unlinklfn __P_((int, long, long, int)); static long NEAR dosfilbuf __P_((int, int)); static long NEAR dosflsbuf __P_((int)); static int NEAR type2flags __P_((CONST char *)); #if MSDOS int dependdosfunc = 0; #else /* !MSDOS */ devinfo fdtype[MAXDRIVEENTRY] = { #if defined (SOLARIS) || defined (SUN_OS) {'A', "/dev/rfd0c", 2, 18, 80}, {'A', "/dev/rfd0c", 2, 9, 80}, {'A', "/dev/rfd0c", 2, 8 + 100, 80}, #endif #if defined (NEWS_OS3) || defined (NEWS_OS4) # if defined (news800) || defined (news900) \ || defined (news1800) || defined (news1900) || defined (news3800) {'A', "/dev/rfh0a", 2, 18, 80}, {'A', "/dev/rfd0a", 2, 9, 80}, {'A', "/dev/rfd0a", 2, 8 + 100, 80}, # else # if defined (news3100) || defined (news5000) {'A', "/dev/rfd00a", 2, 18, 80}, {'A', "/dev/rfd00a", 2, 9, 80}, {'A', "/dev/rfd00a", 2, 8 + 100, 80}, # else {'A', "/dev/rfd00a", 2, 18, 80}, {'A', "/dev/rfd01a", 2, 9, 80}, {'A', "/dev/rfd03a", 2, 8, 80}, # endif # endif #endif #if defined (NEWS_OS6) {'A', "/dev/rfloppy/c0d0u0p0", 2, 18, 80}, {'A', "/dev/rfloppy/c0d0u1p0", 2, 9, 80}, {'A', "/dev/rfloppy/c0d0u3p0", 2, 8, 80}, #endif #if defined (HPUX) # if defined (__hp9000s700) {'A', "/dev/rfloppy/c201d0s0", 2, 18, 80}, {'A', "/dev/rfloppy/c201d0s0", 2, 9, 80}, {'A', "/dev/rfloppy/c201d0s0", 2, 8 + 100, 80}, # endif #endif #if defined (EWSUXV) {'A', "/dev/if/f0h18", 2, 18, 80}, {'A', "/dev/if/f0h8", 2, 8, 77}, {'A', "/dev/if/f0c15", 2, 15, 80}, {'A', "/dev/if/f0d9", 2, 9, 80}, {'A', "/dev/if/f0d8", 2, 8, 80}, #endif #if defined (AIX) {'A', "/dev/rfd0h", 2, 18, 80}, {'A', "/dev/rfd0l", 2, 9, 80}, {'A', "/dev/rfd0l", 2, 8 + 100, 80}, #endif #if defined (ULTRIX) {'A', "/dev/rfh0a", 2, 18, 80}, {'A', "/dev/rfd0a", 2, 9, 80}, {'A', "/dev/rfd0a", 2, 8 + 100, 80}, #endif #if defined (UXPDS) {'A', "/dev/fpd0", 2, 18, 80}, {'A', "/dev/fpd0", 2, 9, 80}, {'A', "/dev/fpd0", 2, 8 + 100, 80}, #endif #if defined (CYGWIN) {'A', "/dev/fd0", 2, 18, 80}, {'A', "/dev/fd0", 2, 9, 80}, {'A', "/dev/fd0", 2, 8 + 100, 80}, #endif #if defined (LINUX) {'A', "/dev/fd0", 2, 18, 80}, {'A', "/dev/fd0", 2, 9, 80}, {'A', "/dev/fd0", 2, 8 + 100, 80}, #endif #if defined (JCCBSD) {'A', "/dev/rfd0a", 2, 18, 80}, {'A', "/dev/rfd0b", 2, 8, 77}, {'A', "/dev/rfd0c", 2, 9, 80}, {'A', "/dev/rfd0d", 2, 8, 80}, #endif #if defined (FREEBSD) # if __FreeBSD__ < 5 {'A', "/dev/rfd0.1440", 2, 18, 80}, {'A', "/dev/rfd0.720", 2, 9, 80}, {'A', "/dev/rfd0.720", 2, 8 + 100, 80}, # else /* FreeBSD >=5.0 has not any buffered device */ {'A', "/dev/fd0.1440", 2, 18, 80}, {'A', "/dev/fd0.720", 2, 9, 80}, {'A', "/dev/fd0.720", 2, 8 + 100, 80}, # endif #endif #if defined (NETBSD) # if defined (i386) {'A', "/dev/rfd0a", 2, 18, 80}, {'A', "/dev/rfd0a", 2, 15, 80}, {'A', "/dev/rfd0c", 2, 9, 80}, {'A', "/dev/rfd0c", 2, 8 + 100, 80}, # endif #endif #if defined (BSDOS) # if defined (i386) {'A', "/dev/rfd0c", 2, 18, 80}, {'A', "/dev/rfd0c", 2, 9, 80}, {'A', "/dev/rfd0c", 2, 8 + 100, 80}, # endif #endif #if defined (OPENBSD) {'A', "/dev/rfd0Bc", 2, 18, 80}, {'A', "/dev/rfd0Fc", 2, 9, 80}, {'A', "/dev/rfd0Fc", 2, 8 + 100, 80}, #endif #if defined (ORG_386BSD) # if defined (i386) {'A', "/dev/fd0a", 2, 18, 80}, {'A', "/dev/fd0a", 2, 15, 80}, {'A', "/dev/fd0b", 2, 8, 77}, {'A', "/dev/fd0c", 2, 9, 80}, {'A', "/dev/fd0c", 2, 8 + 100, 80}, # endif #endif {'\0', NULL, 0, 0, 0} }; #if 0 devinfo CONST mediadescr[] = { {0xff, "2D-8SECT", 2, 8, 40}, {0xfe, "1D-8SECT", 1, 8, 40}, {0xfd, "2D-9SECT", 2, 9, 40}, {0xfc, "1D-9SECT", 1, 9, 40}, {0xfb, "2DD-8SECT", 2, 8 + 100, 80}, {0xf9, "2DD-9SECT", 2, 9, 80}, {0xf9, "2HD-15SECT", 2, 15, 80}, {0xf8, "HDD", 0, 0, 0}, {0xf0, "2HD-18SECT", 2, 18, 80}, {0x02, "2HD-15SECT", 2, 15, 80}, {0x01, "2HD-8SECT", 2, 8, 77}, {0x00, NULL, 0, 0, 0} }; #endif #endif /* !MSDOS */ int lastdrive = -1; int needbavail = 0; VOID_T (*doswaitfunc)__P_((VOID_A)) = NULL; int (*dosintrfunc)__P_((VOID_A)) = NULL; static char *curdir['Z' - 'A' + 1]; static devstat devlist[DOSNOFILE]; static int maxdev = 0; static int devorder[DOSNOFILE]; static int maxorder = 0; static dosFILE dosflist[DOSNOFILE]; static int maxdosf = 0; static u_char cachedrive[SECTCACHESIZE]; static u_long sectno[SECTCACHESIZE]; static u_char *sectcache[SECTCACHESIZE]; static u_char cachesize[SECTCACHESIZE]; static u_char cachewrite[SECTCACHESIZE]; static int maxsectcache = 0; static long maxcachemem = 0L; static long lfn_clust = -1L; static long lfn_offset = 0L; static int doserrno = 0; #if !MSDOS static CONST short sectsizelist[] = SECTSIZE; #define SLISTSIZ arraysize(sectsizelist) #endif static CONST char *inhibitname[] = INHIBITNAME; #define INHIBITNAMESIZ arraysize(inhibitname) #ifndef FD typedef struct _kconv_t { u_short start; u_short cnv; u_short range; } kconv_t; char *unitblpath = NULL; static u_int unitblent = 0; static CONST kconv_t rsjistable[] = { {0x8470, 0x8440, 0x0f}, /* Cyrillic small letters */ {0x8480, 0x844f, 0x12}, /* Why they converted ? */ #define EXCEPTRUSS 2 {0x8754, 0xfa4a, 0x0a}, /* Roman numerals */ {0x8782, 0xfa59, 0x01}, /* numero sign */ {0x8784, 0xfa5a, 0x01}, /* telephone sign */ {0x878a, 0xfa58, 0x01}, /* parenthesized ideograph stock */ {0x8790, 0x81e0, 0x01}, /* nearly equals */ {0x8791, 0x81df, 0x01}, /* identical to */ {0x8792, 0x81e7, 0x01}, /* integral */ {0x8795, 0x81e3, 0x01}, /* square root */ {0x8796, 0x81db, 0x01}, /* up tack */ {0x8797, 0x81da, 0x01}, /* angle */ {0x879a, 0x81e6, 0x01}, /* because */ {0x879b, 0x81bf, 0x01}, /* intersection */ {0x879c, 0x81be, 0x01}, /* union */ {0xed40, 0xfa5c, 0x23}, /* NEC-selected IBM extensions */ {0xed63, 0xfa80, 0x1c}, /* NEC-selected IBM extensions */ {0xed80, 0xfa9c, 0x61}, /* NEC-selected IBM extensions */ {0xede1, 0xfb40, 0x1c}, /* NEC-selected IBM extensions */ {0xee40, 0xfb5c, 0x23}, /* NEC-selected IBM extensions */ {0xee63, 0xfb80, 0x1c}, /* NEC-selected IBM extensions */ {0xee80, 0xfb9c, 0x61}, /* NEC-selected IBM extensions */ {0xeee1, 0xfc40, 0x0c}, /* NEC-selected IBM extensions */ {0xeeef, 0xfa40, 0x0a}, /* small Roman numerals */ {0xeef9, 0x81ca, 0x01}, /* full width not sign */ {0xeefa, 0xfa55, 0x03}, /* full width broken bar */ /* full width apostrophe */ /* full width quotation mark */ {0xfa54, 0x81ca, 0x01}, /* full width not sign */ {0xfa5b, 0x81e6, 0x01}, /* because */ }; #define RSJISTBLSIZ arraysize(rsjistable) #endif /* !FD */ #ifndef FD static char *NEAR gendospath(path, drive, c) char *path; int drive, c; { *(path++) = drive; *(path++) = ':'; if (c) *(path++) = c; *path = '\0'; return(path); } static char *NEAR strdelim(s, d) CONST char *s; int d; { int i; if (d && __dospath(s)) return((char *)&(s[1])); for (i = 0; s[i]; i++) { if (s[i] == _SC_) return((char *)&(s[i])); # ifdef BSPATHDELIM if (iskanji1(s, i)) i++; # endif } return(NULL); } static char *NEAR strrdelim(s, d) CONST char *s; int d; { CONST char *cp; int i; if (d && __dospath(s)) cp = &(s[1]); else cp = NULL; for (i = 0; s[i]; i++) { if (s[i] == _SC_) cp = &(s[i]); # ifdef BSPATHDELIM if (iskanji1(s, i)) i++; # endif } return((char *)cp); } static char *NEAR strrdelim2(s, eol) CONST char *s, *eol; { #ifdef BSPATHDELIM CONST char *cp; int i; cp = NULL; for (i = 0; s[i] && &(s[i]) < eol; i++) { if (s[i] == _SC_) cp = &(s[i]); if (iskanji1(s, i)) i++; } return((char *)cp); #else for (eol--; eol >= s; eol--) if (*eol == _SC_) return((char *)eol); return(NULL); #endif } static int NEAR isdelim(s, ptr) CONST char *s; int ptr; { #ifdef BSPATHDELIM int i; #endif if (ptr < 0 || s[ptr] != _SC_) return(0); #ifdef BSPATHDELIM if (--ptr < 0) return(1); if (!ptr) return(!iskanji1(s, 0)); for (i = 0; s[i] && i < ptr; i++) if (iskanji1(s, i)) i++; if (!s[i] || i > ptr) return(1); return(!iskanji1(s, i)); #else return(1); #endif } #if MSDOS static char *NEAR strcatdelim(s) char *s; { char *cp; int i; if (__dospath(s)) i = 2; else i = 0; if (!s[i]) return(&(s[i])); if (s[i] == _SC_ && !s[i + 1]) return(&(s[i + 1])); cp = NULL; for (; s[i]; i++) { if (s[i] == _SC_) { if (!cp) cp = &(s[i]); continue; } cp = NULL; # ifdef BSPATHDELIM if (iskanji1(s, i)) i++; # endif } if (!cp) { cp = &(s[i]); if (i >= MAXPATHLEN - 1) return(cp); *cp = _SC_; } *(++cp) = '\0'; return(cp); } #endif /* MSDOS */ static char *NEAR strcatdelim2(buf, s1, s2) char *buf; CONST char *s1, *s2; { char *cp; int i, len; if (__dospath(s1)) { buf[0] = s1[0]; buf[1] = s1[1]; i = 2; } else i = 0; if (!s1[i]) cp = &(buf[i]); else if (s1[i] == _SC_ && !s1[i + 1]) { cp = &(buf[i]); *(cp++) = _SC_; } else { cp = NULL; for (; s1[i]; i++) { buf[i] = s1[i]; if (s1[i] == _SC_) { if (!cp) cp = &(buf[i]) + 1; continue; } cp = NULL; #ifdef BSPATHDELIM if (iskanji1(s1, i)) { if (!s1[++i]) break; buf[i] = s1[i]; } #endif } if (!cp) { cp = &(buf[i]); if (i >= MAXPATHLEN - 1) { *cp = '\0'; return(cp); } *(cp++) = _SC_; } } if (s2) { len = MAXPATHLEN - 1 - (cp - buf); for (i = 0; s2[i] && i < len; i++) *(cp++) = s2[i]; } *cp = '\0'; return(cp); } static int NEAR strcasecmp2(s1, s2) CONST char *s1, *s2; { int c1, c2; for (;;) { c1 = toupper2(*s1); c2 = toupper2(*s2); if (c1 != c2) return(c1 - c2); #ifndef CODEEUC if (issjis1(*s1)) { s1++; s2++; if (*s1 != *s2) return((u_char)*s1 - (u_char)*s2); } #endif if (!*s1) break; s1++; s2++; } return(0); } static int NEAR isdotdir(s) CONST char *s; { if (s[0] != '.') /*EMPTY*/; else if (!s[1]) return(2); else if (s[1] != '.') /*EMPTY*/; else if (!s[2]) return(1); return(0); } #if !MSDOS && !defined (NOTZFILEH) \ && !defined (USEMKTIME) && !defined (USETIMELOCAL) static long NEAR char2long(s) CONST u_char *s; { return((long)((u_long)(s[3]) | ((u_long)(s[2]) << (BITSPERBYTE * 1)) | ((u_long)(s[1]) << (BITSPERBYTE * 2)) | ((u_long)(s[0]) << (BITSPERBYTE * 3)))); } static int NEAR tmcmp(tm1, tm2) CONST struct tm *tm1, *tm2; { if (tm1 -> tm_year != tm2 -> tm_year) return (tm1 -> tm_year - tm2 -> tm_year); if (tm1 -> tm_mon != tm2 -> tm_mon) return (tm1 -> tm_mon - tm2 -> tm_mon); if (tm1 -> tm_mday != tm2 -> tm_mday) return (tm1 -> tm_mday - tm2 -> tm_mday); if (tm1 -> tm_hour != tm2 -> tm_hour) return (tm1 -> tm_hour - tm2 -> tm_hour); if (tm1 -> tm_min != tm2 -> tm_min) return (tm1 -> tm_min - tm2 -> tm_min); return (tm1 -> tm_sec - tm2 -> tm_sec); } #endif /* !MSDOS && !NOTZFILEH && !USEMKTIME && !USETIMELOCAL */ #if !defined (USEMKTIME) && !defined (USETIMELOCAL) static time_t NEAR timegm2(tm) CONST struct tm *tm; { time_t t; int i, y; y = (tm -> tm_year < 1900) ? tm -> tm_year + 1900 : tm -> tm_year; t = ((long)y - 1970) * 365; t += ((y - 1 - 1968) / 4) - ((y - 1 - 1900) / 100) + ((y - 1 - 1600) / 400); for (i = 1; i < tm -> tm_mon + 1; i++) switch (i) { case 2: if (!(y % 4) && ((y % 100) || !(y % 400))) t++; t += 28; break; case 4: case 6: case 9: case 11: t += 30; break; default: t += 31; break; } t += tm -> tm_mday - 1; t *= 60L * 60L * 24L; t += ((long)(tm -> tm_hour) * 60L + tm -> tm_min) * 60L + tm -> tm_sec; return(t); } static long NEAR gettimezone(tm, t) CONST struct tm *tm; time_t t; { # if MSDOS struct timeb buffer; ftime(&buffer); return((long)(buffer.timezone) * 60L); # else /* !MSDOS */ # ifndef NOTZFILEH struct tzhead head; FILE *fp; time_t tmp; long i, leap, nleap, ntime, ntype, nchar; char *cp, buf[MAXPATHLEN]; u_char c; # endif struct tm tmbuf; long tz; memcpy((char *)&tmbuf, (char *)tm, sizeof(struct tm)); # ifdef NOTMGMTOFF tz = (long)t - (long)timegm2(localtime(&t)); # else tz = -(localtime(&t) -> tm_gmtoff); # endif # ifndef NOTZFILEH cp = getconstvar("TZ"); if (!cp || !*cp) cp = TZDEFAULT; if (cp[0] == _SC_) strcpy(buf, cp); else strcatdelim2(buf, TZDIR, cp); if (!(fp = fopen(buf, "rb"))) return(tz); if (fread(&head, sizeof(struct tzhead), 1, fp) != 1) { fclose(fp); return(tz); } # ifdef USELEAPCNT nleap = char2long(head.tzh_leapcnt); # else nleap = char2long(head.tzh_timecnt - 4); # endif ntime = char2long(head.tzh_timecnt); ntype = char2long(head.tzh_typecnt); nchar = char2long(head.tzh_charcnt); for (i = 0; i < ntime; i++) { if (fread(buf, sizeof(char), 4, fp) != 4) { fclose(fp); return(tz); } tmp = char2long(buf); if (tmcmp(&tmbuf, localtime(&tmp)) < 0) break; } if (i > 0) { i--; i *= (int)sizeof(char); i += (int)sizeof(struct tzhead) + ntime * 4 * sizeof(char); if (fseek(fp, i, 0) < 0 || fread(&c, sizeof(char), 1, fp) != 1) { fclose(fp); return(tz); } i = c; } i *= (4 + 1 + 1) * sizeof(char); i += (int)sizeof(struct tzhead) + ntime * (4 + 1) * sizeof(char); if (fseek(fp, i, 0) < 0 || fread(buf, sizeof(char), 4, fp) != 4) { fclose(fp); return(tz); } tmp = char2long(buf); tz = -tmp; i = (int)sizeof(struct tzhead) + ntime * (4 + 1) * sizeof(char) + ntype * (4 + 1 + 1) * sizeof(char) + nchar * sizeof(char); if (fseek(fp, i, 0) < 0) { fclose(fp); return(tz); } leap = 0; for (i = 0; i < nleap; i++) { if (fread(buf, sizeof(char), 4, fp) != 4) { fclose(fp); return(tz); } tmp = char2long(buf); if (tmcmp(&tmbuf, localtime(&tmp)) <= 0) break; if (fread(buf, sizeof(char), 4, fp) != 4) { fclose(fp); return(tz); } leap = char2long(buf); } tz += leap; fclose(fp); # endif /* !NOTZFILEH */ return(tz); # endif /* !MSDOS */ } #endif /* !USEMKTIME && !USETIMELOCAL */ static time_t NEAR timelocal2(tm) struct tm *tm; { #ifdef USEMKTIME tm -> tm_isdst = -1; return(mktime(tm)); #else /* !USEMKTIME */ # ifdef USETIMELOCAL return(timelocal(tm)); # else /* !USETIMELOCAL */ time_t t; t = timegm2(tm); t += gettimezone(tm, t); return(t); # endif /* !USETIMELOCAL */ #endif /* !USEMKTIME */ } static int NEAR openunitbl(file) CONST char *file; { static int fd = -2; u_char buf[2]; char path[MAXPATHLEN]; if (!file) { if (fd >= 0) Xclose(fd); fd = -2; return(0); } if (fd >= -1) return(fd); if (!unitblpath || !*unitblpath) strcpy(path, file); else strcatdelim2(path, unitblpath, file); fd = -1; if ((fd = Xopen(path, O_BINARY | O_RDONLY, 0666)) < 0) fd = -1; else if (unitblent) /*EMPTY*/; else if (sureread(fd, buf, 2) == 2) unitblent = getword(buf, 0); else { Xclose(fd); fd = -1; } return(fd); } static u_int NEAR unifysjis(wc, russ) u_int wc; int russ; { int n, min, max; wc &= 0xffff; min = ((russ) ? 0 : EXCEPTRUSS) - 1; max = RSJISTBLSIZ; for (;;) { n = (min + max) / 2; if (n <= min || n >= max) break; if (wc >= rsjistable[n].start + rsjistable[n].range) min = n; else if (wc < rsjistable[n].start) max = n; else { wc -= rsjistable[n].start; wc += rsjistable[n].cnv; break; } } return(wc); } static u_int NEAR cnvunicode(wc, encode) u_int wc; int encode; { u_char *cp, buf[4]; u_int r, w, ofs, min, max; int fd; wc &= 0xffff; if (encode < 0) { VOID_C openunitbl(NULL); return(0); } if (encode) { r = U2_UDEF; if (wc < 0x0080) return(wc); if (wc >= 0x00a1 && wc <= 0x00df) return(0xff00 | (wc - 0x00a1 + 0x61)); if (wc >= 0x8260 && wc <= 0x8279) return(0xff00 | (wc - 0x8260 + 0x21)); if (wc >= 0x8281 && wc <= 0x829a) return(0xff00 | (wc - 0x8281 + 0x41)); if (wc < MINKANJI || wc > MAXKANJI) { return(r); } wc = unifysjis(wc, 0); } else { r = SJ_UDEF; switch (wc & 0xff00) { case 0: if ((wc & 0xff) < 0x80) return(wc); break; case 0xff00: w = wc & 0xff; if (w >= 0x21 && w <= 0x3a) return(w + 0x8260 - 0x21); if (w >= 0x41 && w <= 0x5a) return(w + 0x8281 - 0x41); if (w >= 0x61 && w <= 0x9f) return(w + 0x00a1 - 0x61); break; default: break; } if (wc < MINUNICODE || wc > MAXUNICODE) { return(r); } } cp = buf; ofs = min = max = 0; if ((fd = openunitbl(UNICODETBL)) < 0) ofs = unitblent; else if (encode) { if (Xlseek(fd, (off_t)2, L_SET) < (off_t)0) ofs = unitblent; else for (ofs = 0; ofs < unitblent; ofs++) { if (sureread(fd, cp, 4) != 4) { ofs = unitblent; break; } w = getword(cp, 2); if (wc == w) break; } } else { min = 0; max = unitblent + 1; for (;;) { ofs = (min + max) / 2; if (ofs <= min || ofs >= max) break; if (!skread(fd, (off_t)(ofs - 1) * 4 + 2, cp, 4)) { ofs = min = max = 0; break; } w = getword(cp, 0); if (wc > w) min = ofs; else if (wc < w) max = ofs; else break; } } if (encode) { if (ofs < unitblent) r = getword(cp, 0); } else { if (ofs > min && ofs < max) r = getword(cp, 2); } return(r); } #endif /* !FD */ #ifdef USELLSEEK # ifdef _syscall5 # undef _llseek static _syscall5(int, _llseek, u_int, fd, u_long, ofs_h, u_long, ofs_l, l_off_t *, result, u_int, whence); # endif static l_off_t NEAR Xllseek(fd, offset, whence) int fd; l_off_t offset; int whence; { l_off_t result; u_long ofs_h, ofs_l; ofs_h = (u_long)(offset >> 32); ofs_l = (u_long)(offset & (u_long)0xffffffff); if (_llseek(fd, ofs_h, ofs_l, &result, whence) < 0) return((l_off_t)-1); return(result); } #endif /* USELLSEEK */ #if !MSDOS static int NEAR sectseek(devp, sect) CONST devstat *devp; u_long sect; { l_off_t offset; int duperrno; duperrno = errno; if (devp -> flags & F_8SECT) sect += sect / 8; offset = (l_off_t)sect * (l_off_t)(devp -> sectsize); # ifdef HDDMOUNT offset += devp -> offset; # endif if (Xllseek(devp -> fd, offset, L_SET) < (l_off_t)0) { doserrno = errno; errno = duperrno; return(-1); } errno = duperrno; return(0); } #endif /* !MSDOS */ static int NEAR realread(devp, sect, buf, n) CONST devstat *devp; u_long sect; u_char *buf; int n; { int duperrno; duperrno = errno; #if MSDOS n = rawdiskio(devp -> drive, sect, buf, n, devp -> sectsize, 0); if (n < 0) { doserrno = errno; return(-1); } #else if (sectseek(devp, sect) < 0) return(-1); while (read(devp -> fd, buf, (long)n * devp -> sectsize) < 0) { if (errno == EINTR) errno = duperrno; else { doserrno = errno; return(-1); } } #endif errno = duperrno; return(0); } static int NEAR realwrite(devp, sect, buf, n) CONST devstat *devp; u_long sect; CONST u_char *buf; int n; { int duperrno; duperrno = errno; #if MSDOS n = rawdiskio(devp -> drive, sect, (char *)buf, n, devp -> sectsize, 1); if (n < 0) { doserrno = errno; return(-1); } #else if (sectseek(devp, sect) < 0) return(-1); if (write(devp -> fd, buf, (long)n * devp -> sectsize) < 0) { if (errno == EINTR) errno = duperrno; else { doserrno = errno; return(-1); } } #endif errno = duperrno; return(0); } static int NEAR killcache(devp, n, size) CONST devstat *devp; int n, size; { int i, top; top = n - size; for (i = n; i > top; i--) { if (cachewrite[i]) { if (devp -> flags & F_RONLY) { doserrno = EROFS; n = -1; } if (realwrite(devp, sectno[i], sectcache[i], 1) < 0) n = -1; } free(sectcache[i]); cachewrite[i] = 0; } return(n); } static int NEAR flushcache(devp) CONST devstat *devp; { int i, ret; ret = 0; for (i = maxsectcache - 1; i >= 0; i--) { if (cachedrive[i] != devp -> drive) continue; if (cachewrite[i] && !(devp -> flags & F_RONLY) && realwrite(devp, sectno[i], sectcache[i], 1) < 0) ret = -1; cachewrite[i] = 0; } return(ret); } static int NEAR shiftcache(devp, n, nsect) CONST devstat *devp; int n, nsect; { u_char *cachebuf[SECTCACHESIZE], wrtbuf[SECTCACHESIZE]; u_long no; int i, drive, size; for (; n < maxsectcache - 1; n++) if (cachesize[n + 1] <= 1) break; drive = cachedrive[n]; no = sectno[n]; size = cachesize[n]; if (!devp) { for (i = 0; i < maxdev; i++) if (devlist[i].drive == drive) { devp = &(devlist[i]); break; } } if (nsect < 0) { if (killcache(devp, n, size) < 0) return(SECTCACHESIZE + 1); } else for (i = 0; i < size; i++) { cachebuf[i] = sectcache[n - i]; wrtbuf[i] = cachewrite[n - i]; } for (i = n - size + 1; i < maxsectcache - size; i++) { cachedrive[i] = cachedrive[i + size]; sectno[i] = sectno[i + size]; sectcache[i] = sectcache[i + size]; cachesize[i] = cachesize[i + size]; cachewrite[i] = cachewrite[i + size]; } maxsectcache -= size; maxcachemem -= size * devp -> sectsize; n = size; if (nsect < 0) return(n); if (!nsect) nsect = size; while (maxsectcache > 0 && (maxsectcache + nsect > SECTCACHESIZE || maxcachemem + nsect * devp -> sectsize > SECTCACHEMEM)) { if ((i = shiftcache(NULL, 0, -1)) > SECTCACHESIZE) return(SECTCACHESIZE + 1); n += i; } maxsectcache += nsect; maxcachemem += nsect * devp -> sectsize; n -= nsect; for (i = 0; i < nsect; i++) { cachedrive[maxsectcache - i - 1] = drive; sectno[maxsectcache - i - 1] = no + i; sectcache[maxsectcache - i - 1] = cachebuf[i]; cachesize[maxsectcache - i - 1] = nsect - i; cachewrite[maxsectcache - i - 1] = wrtbuf[i]; } return(n); } static int NEAR cachecpy(n, ofs1, ofs2, size) int n, ofs1, ofs2, size; { int i; if (ofs1 <= ofs2) for (i = 0; i < size; i++) { sectcache[n - ofs1 - i] = sectcache[n - ofs2 - i]; cachewrite[n - ofs1 - i] = cachewrite[n - ofs2 - i]; } else for (i = size - 1; i >= 0; i--) { sectcache[n - ofs1 - i] = sectcache[n - ofs2 - i]; cachewrite[n - ofs1 - i] = cachewrite[n - ofs2 - i]; } return(size); } static int NEAR uniqcache(devp, n, min, max) CONST devstat *devp; int n; u_long min, max; { int i, j, size; if (min >= max) return(0); for (i = n - cachesize[n]; i >= 0; i -= cachesize[i]) { if (devp -> drive != cachedrive[i]) continue; if (min <= sectno[i] && max >= sectno[i] + cachesize[i]) return(shiftcache(devp, i, -1)); if (min > sectno[i] && min < sectno[i] + cachesize[i]) { size = min - sectno[i]; for (j = 0; j < size; j++) cachesize[i - j] = size - j; return(shiftcache(devp, i - size, -1)); } if (max > sectno[i] && max < sectno[i] + cachesize[i]) { size = max - sectno[i]; for (j = 0; j < size; j++) cachesize[i - j] = size - j; return(shiftcache(devp, i, -1)); } } return(0); } static int NEAR appendcache(dst, devp, sect, buf, n, wrt) int dst; CONST devstat *devp; u_long sect; CONST u_char *buf; int n, wrt; { u_long min, max; int i, size, duperrno; duperrno = errno; min = sectno[dst]; max = min + cachesize[dst]; size = sect + n - min; if (devp -> sectsize > STDSECTSIZE && size * devp -> sectsize > SECTCACHEMEM) { size = SECTCACHEMEM / devp -> sectsize; min = sect + n - size; if (killcache(devp, dst, (int)(min - sectno[dst])) < 0) return(-1); cachecpy(dst, 0, (int)(min - sectno[dst]), (int)(max - min)); } else if (size > SECTCACHESIZE) { min += size - SECTCACHESIZE; size = SECTCACHESIZE; if (killcache(devp, dst, (int)(min - sectno[dst])) < 0) return(-1); cachecpy(dst, 0, (int)(min - sectno[dst]), (int)(max - min)); } else if (size < cachesize[dst]) size = cachesize[dst]; if ((i = uniqcache(devp, dst, max, sect + n)) > SECTCACHESIZE) return(-1); dst -= i; sectno[dst] = min; if (shiftcache(devp, dst, size) > SECTCACHESIZE) return(-1); dst = maxsectcache - 1 - (sect - min); for (i = 0; i < n; i++) { if (i + sect < max) cachewrite[dst - i] |= wrt; else { sectcache[dst - i] = (u_char *)malloc(devp -> sectsize); if (!sectcache[dst - i]) { doserrno = errno; errno = duperrno; return(-1); } cachewrite[dst - i] = wrt; } memcpy((char *)sectcache[dst - i], (char *)buf, devp -> sectsize); buf += devp -> sectsize; } return(0); } static int NEAR insertcache(dst, devp, sect, buf, n, wrt) int dst; CONST devstat *devp; u_long sect; CONST u_char *buf; int n, wrt; { u_long min, max; int i, size, duperrno; duperrno = errno; min = sectno[dst]; max = min + cachesize[dst]; size = max - sect; if (devp -> sectsize > STDSECTSIZE && size * devp -> sectsize > SECTCACHEMEM) { size = SECTCACHEMEM / devp -> sectsize; max = sect + size; i = dst - (max - min); if (killcache(devp, i, cachesize[i]) < 0) return(-1); } else if (size > SECTCACHESIZE) { size = SECTCACHESIZE; max = sect + size; i = dst - (max - min); if (killcache(devp, i, cachesize[i]) < 0) return(-1); } else if (size < cachesize[dst]) size = cachesize[dst]; if ((i = uniqcache(devp, dst, sect, min)) > SECTCACHESIZE) return(-1); dst -= i; sectno[dst] = sect; if (shiftcache(devp, dst, size) > SECTCACHESIZE) return(-1); dst = maxsectcache - 1; cachecpy(dst, (int)(min - sect), 0, (int)(max - min)); for (i = 0; i < n; i++) { if (i + sect >= min) cachewrite[dst - i] |= wrt; else { sectcache[dst - i] = (u_char *)malloc(devp -> sectsize); if (!sectcache[dst - i]) { doserrno = errno; errno = duperrno; return(-1); } cachewrite[dst - i] = wrt; } memcpy((char *)sectcache[dst - i], (char *)buf, devp -> sectsize); buf += devp -> sectsize; } return(0); } static int NEAR overwritecache(dst, devp, sect, buf, n, wrt) int dst; CONST devstat *devp; u_long sect; CONST u_char *buf; int n, wrt; { u_long min, max; int i, size, duperrno; duperrno = errno; min = sectno[dst]; max = min + cachesize[dst]; size = n; if (size < cachesize[dst]) size = cachesize[dst]; if ((i = uniqcache(devp, dst, sect, min)) > SECTCACHESIZE) return(-1); dst -= i; if ((i = uniqcache(devp, dst, max, sect + n)) > SECTCACHESIZE) return(-1); dst -= i; sectno[dst] = sect; if (shiftcache(devp, dst, size) > SECTCACHESIZE) return(-1); dst = maxsectcache - 1; cachecpy(dst, (int)(min - sect), 0, (int)(max - min)); for (i = 0; i < n; i++) { if (i + sect >= min && i + sect < max) cachewrite[dst - i] |= wrt; else { sectcache[dst - i] = (u_char *)malloc(devp -> sectsize); if (!sectcache[dst - i]) { doserrno = errno; errno = duperrno; return(-1); } cachewrite[dst - i] = wrt; } memcpy((char *)sectcache[dst - i], (char *)buf, devp -> sectsize); buf += devp -> sectsize; } return(0); } static int NEAR savecache(devp, sect, buf, n, wrt) CONST devstat *devp; u_long sect; CONST u_char *buf; int n, wrt; { int i, duperrno; if (n > SECTCACHESIZE || n * devp -> sectsize > SECTCACHEMEM) return(-1); for (i = maxsectcache - 1; i >= 0; i -= cachesize[i]) { if (devp -> drive != cachedrive[i]) continue; if (sect >= sectno[i] && sect <= sectno[i] + cachesize[i]) return(appendcache(i, devp, sect, buf, n, wrt)); if (sect + n >= sectno[i] && sect + n <= sectno[i] + cachesize[i]) return(insertcache(i, devp, sect, buf, n, wrt)); if (sect <= sectno[i] && sect + n >= sectno[i] + cachesize[i]) return(overwritecache(i, devp, sect, buf, n, wrt)); } duperrno = errno; while (maxsectcache > 0 && (maxsectcache + n > SECTCACHESIZE || maxcachemem + n * devp -> sectsize > SECTCACHEMEM)) { if (shiftcache(NULL, 0, -1) > SECTCACHESIZE) return(-1); } maxsectcache += n; maxcachemem += n * devp -> sectsize; for (i = 0; i < n; i++) { cachedrive[maxsectcache - i - 1] = devp -> drive; sectno[maxsectcache - i - 1] = sect + i; sectcache[maxsectcache - i - 1] = (u_char *)malloc(devp -> sectsize); if (!sectcache[maxsectcache - i - 1]) { doserrno = errno; errno = duperrno; return(-1); } cachesize[maxsectcache - i - 1] = n - i; cachewrite[maxsectcache - i - 1] = wrt; memcpy((char *)sectcache[maxsectcache - i - 1], (char *)buf, devp -> sectsize); buf += devp -> sectsize; } return(0); } static int NEAR loadcache(devp, sect, buf, n) CONST devstat *devp; u_long sect; u_char *buf; int n; { u_char *cp; int i, j, src, size; if (n <= 0) return(0); for (i = maxsectcache - 1; i >= 0; i -= cachesize[i]) { if (devp -> drive != cachedrive[i]) continue; if (sect >= sectno[i] && sect + n <= sectno[i] + cachesize[i]) { src = i - (sect - sectno[i]); for (j = 0; j < n; j++) { memcpy((char *)buf, (char *)sectcache[src - j], devp -> sectsize); buf += devp -> sectsize; } if (shiftcache(devp, i, 0) > SECTCACHESIZE) return(-1); return(0); } if (sect >= sectno[i] && sect < sectno[i] + cachesize[i]) { size = sectno[i] + cachesize[i] - sect; src = i - (sect - sectno[i]); cp = buf + (long)size * devp -> sectsize; for (j = 0; j < size; j++) { memcpy((char *)buf, (char *)sectcache[src - j], devp -> sectsize); buf += devp -> sectsize; } if (shiftcache(devp, i, 0) > SECTCACHESIZE) return(-1); return(loadcache(devp, sect + size, cp, n - size)); } if (sect + n > sectno[i] && sect + n <= sectno[i] + cachesize[i]) { size = sect + n - sectno[i]; src = i; cp = buf + (long)(n - size) * devp -> sectsize; if (loadcache(devp, sect, buf, n - size) < 0) return(-1); for (j = 0; j < size; j++) { memcpy((char *)cp, (char *)sectcache[src - j], devp -> sectsize); cp += devp -> sectsize; } if (shiftcache(devp, i, 0) > SECTCACHESIZE) return(-1); return(0); } if (sect <= sectno[i] && sect + n >= sectno[i] + cachesize[i]) { size = sectno[i] - sect; src = i; cp = buf + (long)size * devp -> sectsize; if (loadcache(devp, sect, buf, size) < 0) return(-1); for (j = 0; j < cachesize[i]; j++) { memcpy((char *)cp, (char *)sectcache[src - j], devp -> sectsize); cp += devp -> sectsize; } if (shiftcache(devp, i, 0) > SECTCACHESIZE) return(-1); size = sect + n - sectno[i] + cachesize[i]; cp += (long)cachesize[i] * devp -> sectsize; return(loadcache(devp, sect + size, cp, n - size) < 0); } } if (realread(devp, sect, buf, n) < 0) return(-1); savecache(devp, sect, buf, n, 0); return(0); } static long NEAR sectread(devp, sect, buf, n) CONST devstat *devp; u_long sect; u_char *buf; int n; { if (loadcache(devp, sect, buf, n) < 0) return(-1); return((long)n * devp -> sectsize); } static long NEAR sectwrite(devp, sect, buf, n) CONST devstat *devp; u_long sect; CONST u_char *buf; int n; { if (devp -> flags & F_RONLY) { doserrno = EROFS; return(-1); } if (savecache(devp, sect, buf, n, 1) < 0 && realwrite(devp, sect, buf, n) < 0) return(-1); return((long)n * devp -> sectsize); } static int NEAR availfat(devp) CONST devstat *devp; { u_char *buf; u_long i, n, clust; int j, gap, duperrno; if (!needbavail || devp -> availsize != (u_long)0xffffffff) return(0); duperrno = errno; if (!(buf = (u_char *)malloc(devp -> sectsize))) { doserrno = errno; errno = duperrno; return(-1); } if (doswaitfunc) (*doswaitfunc)(); n = 0; clust = devp -> totalsize + 2; if (devp -> flags & F_FAT32) for (i = 0; i < devp -> fatsize; i++) { if (dosintrfunc && (*dosintrfunc)()) { free(buf); return(0); } if (sectread(devp, devp -> fatofs + i, buf, 1) < 0L) { free(buf); return(-1); } for (j = 0; j < devp -> sectsize; j += 4) { if (clust) clust--; else break; if (!buf[j] && !buf[j + 1] && !buf[j + 2] && !buf[j + 3]) n++; } if (!clust) break; } else if (devp -> flags & F_16BIT) for (i = 0; i < devp -> fatsize; i++) { if (dosintrfunc && (*dosintrfunc)()) { free(buf); return(0); } if (sectread(devp, devp -> fatofs + i, buf, 1) < 0L) { free(buf); return(-1); } for (j = 0; j < devp -> sectsize; j += 2) { if (clust) clust--; else break; if (!buf[j] && !buf[j + 1]) n++; } if (!clust) break; } else for (i = gap = 0; i < devp -> fatsize; i++) { if (dosintrfunc && (*dosintrfunc)()) { free(buf); return(0); } if (sectread(devp, devp -> fatofs + i, buf, 1) < 0L) { free(buf); return(-1); } if ((gap & 4)) { if (clust) clust--; else break; if (((gap & 3) == 2 && !buf[0]) || ((gap & 3) == 1 && !(buf[0] & 0x0f))) n++; } for (j = (gap & 3); j < (devp -> sectsize - 1) * 2; j += 3) { if (clust) clust--; else break; if (j % 2) { if (!(buf[j / 2] & 0xf0) && !buf[j / 2 + 1]) n++; } else { if (!buf[j / 2] && !(buf[j / 2 + 1] & 0x0f)) n++; } } if (!clust) break; if (j >= devp -> sectsize * 2) gap = 0; else if (j % 2) gap = (buf[j / 2] & 0xf0) ? 6 : 2; else gap = (buf[j / 2]) ? 5 : 1; } for (i = 0; i < maxdev; i++) if (devlist[i].drive == devp -> drive) devlist[i].availsize = n; free(buf); return(0); } static int NEAR readfat(devp) devstat *devp; { long size; int duperrno; duperrno = errno; size = (long)(devp -> fatsize) * (long)(devp -> sectsize); if (size > MAXFATMEM) devp -> fatbuf = NULL; else if ((devp -> fatbuf = (char *)malloc(size)) && sectread(devp, devp -> fatofs, (u_char *)(devp -> fatbuf), devp -> fatsize) < 0L) { doserrno = errno; free(devp -> fatbuf); errno = duperrno; return(-1); } errno = duperrno; return(0); } static int NEAR writefat(devp) CONST devstat *devp; { char *buf; long i; int n; n = 0; buf = devp -> fatbuf; for (i = 0; i < maxdev; i++) { if (devlist[i].drive != devp -> drive) continue; n |= devlist[i].flags & F_WRFAT; if (!buf) buf = devlist[i].fatbuf; devlist[i].flags &= ~F_WRFAT; } if (!n || !buf) return(0); for (i = devp -> fatofs; i < devp -> dirofs; i += devp -> fatsize) if (sectwrite(devp, i, (u_char *)buf, devp -> fatsize) < 0L) return(-1); return(0); } static long NEAR getfatofs(devp, clust) CONST devstat *devp; long clust; { long ofs, bit; if (!clust) clust = devp -> rootdir; bit = (devp -> flags & F_FAT32) ? 8 : ((devp -> flags & F_16BIT) ? 4 : 3); ofs = (clust * bit) / 2; if (ofs < bit || ofs >= (long)(devp -> fatsize) * (long)(devp -> sectsize)) { doserrno = EIO; return(-1L); } return(ofs); } static u_char *NEAR readtmpfat(devp, ofs, nsect) CONST devstat *devp; long ofs; int nsect; { u_char *buf; int duperrno; duperrno = errno; if (!(buf = (u_char *)malloc((devp -> sectsize) * nsect))) { doserrno = errno; errno = duperrno; return(NULL); } ofs /= (devp -> sectsize); if (sectread(devp, (u_long)(devp -> fatofs) + ofs, buf, nsect) < 0L) { free(buf); return(NULL); } return(buf); } static long NEAR getfatent(devp, clust) CONST devstat *devp; long clust; { u_char *fatp, *buf; long ofs; int nsect; if ((ofs = getfatofs(devp, clust)) < 0L) return(-1L); if ((devp -> fatbuf)) { buf = NULL; fatp = (u_char *)&(devp -> fatbuf[ofs]); } else { nsect = 1; if (!(devp -> flags & (F_16BIT | F_FAT32)) && (ofs % devp -> sectsize) >= devp -> sectsize - 1) nsect = 2; if (!(buf = readtmpfat(devp, ofs, nsect))) return(-1L); fatp = buf + (ofs % (devp -> sectsize)); } if (devp -> flags & F_FAT32) { ofs = (*fatp & 0xff) + ((u_long)(*(fatp + 1) & 0xff) << 8) + ((u_long)(*(fatp + 2) & 0xff) << 16) + ((u_long)(*(fatp + 3) & 0xff) << 24); if (ofs >= (u_long)0x0ffffff8) ofs = ENDCLUST; } else if (devp -> flags & F_16BIT) { ofs = (*fatp & 0xff) + ((long)(*(fatp + 1) & 0xff) << 8); if (ofs >= 0x0fff8) ofs = ENDCLUST; else if (ofs == 0x0fff7) ofs = ERRCLUST; } else { if (clust % 2) ofs = (((*fatp) & 0xf0) >> 4) + ((long)(*(fatp + 1) & 0xff) << 4); else ofs = (*fatp & 0xff) + ((long)(*(fatp + 1) & 0x0f) << 8); if (ofs >= 0x0ff8) ofs = ENDCLUST; else if (ofs == 0x0ff7) ofs = ERRCLUST; } if (buf) free(buf); return(ofs); } static int NEAR putfatent(devp, clust, n) devstat *devp; long clust, n; { u_char *fatp, *buf; long i, ofs; int old, nsect; if ((ofs = getfatofs(devp, clust)) < 0L) return(-1); if ((devp -> fatbuf)) { buf = NULL; #ifdef FAKEUNINIT nsect = 0; /* fake for -Wuninitialized */ #endif fatp = (u_char *)&(devp -> fatbuf[ofs]); } else { nsect = 1; if (!(devp -> flags & (F_16BIT | F_FAT32)) && (ofs % devp -> sectsize) >= devp -> sectsize - 1) nsect = 2; if (!(buf = readtmpfat(devp, ofs, nsect))) return(-1); fatp = buf + (ofs % (devp -> sectsize)); } if (devp -> flags & F_FAT32) { old = (*fatp || *(fatp + 1) || *(fatp + 2) || *(fatp + 3)); *fatp = n & 0xff; *(fatp + 1) = (n >> 8) & 0xff; *(fatp + 2) = (n >> 16) & 0xff; *(fatp + 3) = (n >> 24) & 0xff; } else if (devp -> flags & F_16BIT) { old = (*fatp || *(fatp + 1)); *fatp = n & 0xff; *(fatp + 1) = (n >> 8) & 0xff; } else if (clust % 2) { old = ((*fatp & 0xf0) || *(fatp + 1)); *fatp &= 0x0f; *fatp |= (n << 4) & 0xf0; *(fatp + 1) = (n >> 4) & 0xff; } else { old = (*fatp || (*(fatp + 1) & 0x0f)); *fatp = n & 0xff; *(fatp + 1) &= 0xf0; *(fatp + 1) |= (n >> 8) & 0x0f; } if (!buf) devp -> flags |= F_WRFAT; else { for (i = devp -> fatofs; i < devp -> dirofs; i += devp -> fatsize) { if (sectwrite(devp, i + (ofs / (devp -> sectsize)), buf, nsect) < 0L) { free(buf); return(-1); } } free(buf); } if (devp -> availsize != (u_long)0xffffffff) { u_long avail; int i; avail = devp -> availsize; if (!n && old) avail++; else if (n && !old && avail) avail--; if (avail != devp -> availsize) for (i = 0; i < maxdev; i++) if (devlist[i].drive == devp -> drive) devlist[i].availsize = avail; } return(0); } static u_long NEAR clust2sect(devp, clust) CONST devstat *devp; long clust; { u_long sect; if (devp -> flags & F_FAT32) { if (!clust) clust = devp -> rootdir; } else if (!clust || clust >= ROOTCLUST) { sect = (clust) ? clust - ROOTCLUST : devp -> dirofs; if (sect >= devp -> dirofs + (u_long)(devp -> dirsize)) { doserrno = 0; return((u_long)0); } return(sect); } if (clust == ENDCLUST) { doserrno = 0; return((u_long)0); } if (clust == ERRCLUST) { doserrno = EIO; return((u_long)0); } sect = ((clust - MINCLUST) * (u_long)(devp -> clustsize)) + (devp -> dirofs + (u_long)(devp -> dirsize)); return(sect); } static long NEAR clust32(devp, dentp) CONST devstat *devp; CONST dent_t *dentp; { long clust; clust = (long)byte2word(dentp -> clust); if (devp -> flags & F_FAT32) clust += (long)byte2word(dentp -> clust_h) << 16; return(clust); } static long NEAR newclust(devp) CONST devstat *devp; { long clust, used; for (clust = MINCLUST; (used = getfatent(devp, clust)) >= 0L; clust++) if (!used) break; if (used < 0 || clust > devp -> totalsize) { doserrno = ENOSPC; return(-1L); } return(clust); } static long NEAR clustread(devp, buf, clust) CONST devstat *devp; u_char *buf; long clust; { u_long sect; long next; if (!(sect = clust2sect(devp, clust))) return(-1L); if (!(devp -> flags & F_FAT32) && sect < devp -> dirofs + (u_long)(devp -> dirsize)) next = ROOTCLUST + sect + (long)(devp -> clustsize); else next = getfatent(devp, clust); if (buf && sectread(devp, sect, buf, devp -> clustsize) < 0L) return(-1L); return(next); } static long NEAR clustwrite(devp, buf, prev) devstat *devp; CONST u_char *buf; long prev; { u_long sect; long clust; if ((clust = newclust(devp)) < 0L) return(-1L); if (!(sect = clust2sect(devp, clust))) { doserrno = EIO; return(-1L); } if (buf && sectwrite(devp, sect, buf, devp -> clustsize) < 0L) return(-1L); if ((prev && putfatent(devp, prev, clust) < 0) || putfatent(devp, clust, ENDCLUST) < 0) return(-1L); return(clust); } static long NEAR clustexpand(devp, clust, fill) devstat *devp; long clust; int fill; { u_char *buf; long n, new, size; int duperrno; if (!fill) buf = NULL; else { duperrno = errno; size = (long)(devp -> clustsize) * (long)(devp -> sectsize); if (!(buf = (u_char *)malloc(size))) { doserrno = errno; errno = duperrno; return(-1L); } for (n = 0; n < size; n++) buf[n] = 0; } new = clustwrite(devp, buf, clust); if (buf) free(buf); return(new); } static int NEAR clustfree(devp, clust) devstat *devp; long clust; { long next; if (clust) for (;;) { next = getfatent(devp, clust); if (next < 0L || putfatent(devp, clust, 0) < 0) return(-1); if (next == ENDCLUST || next == ERRCLUST) break; clust = next; } return(0); } #if MSDOS static int NEAR readbpb(devp, drv) devstat *devp; int drv; #else static int NEAR _readbpb(devp, bpbcache) devstat *devp; CONST bpb_t *bpbcache; #endif { #if !MSDOS int i, cc, fd, nsect; #endif CONST bpb_t *bpb; char *buf; long total; int duperrno; duperrno = errno; #if MSDOS if (!(buf = (char *)malloc(MAXSECTSIZE))) { doserrno = errno; errno = duperrno; return(-1); } bpb = (bpb_t *)buf; if (rawdiskio(drv, 0, buf, 1, MAXSECTSIZE, 0) < 0) { doserrno = errno; free(buf); errno = duperrno; return(-1); } memset((char *)devp, 0, sizeof(devstat)); devp -> drive = drv; #else /* !MSDOS */ buf = NULL; if (!(devp -> ch_head) || !(nsect = devp -> ch_sect)) return(0); # ifdef HDDMOUNT if (!(devp -> ch_cyl)); else # endif if (nsect <= 100) devp -> flags &= ~F_8SECT; else { nsect %= 100; devp -> flags |= F_8SECT; } if (bpbcache -> nfat) bpb = bpbcache; else { devp -> fd = -1; i = (O_BINARY | O_RDWR); # ifdef HDDMOUNT if (!(devp -> ch_cyl) && toupper2(devp -> ch_head) != 'W') { i = (O_BINARY | O_RDONLY); devp -> flags |= F_RONLY; } # endif # ifdef LINUX if (i == (O_BINARY | O_RDWR)) { struct stat st1, st2; struct mntent *mntp; FILE *fp; if (stat(devp -> ch_name, &st1)) { doserrno = errno; errno = duperrno; return(-1); } if ((fp = setmntent(MOUNTED, "r"))) { while ((mntp = getmntent(fp))) { # if 1 if (strstr(mntp -> mnt_opts, "ro")) continue; # endif if (stat(mntp -> mnt_fsname, &st2)) continue; if (st1.st_ino == st2.st_ino) { i = (O_BINARY | O_RDONLY); devp -> flags |= F_RONLY; break; } } endmntent(fp); } } # endif /* LINUX */ if ((fd = open(devp -> ch_name, i, 0666)) < 0) { # ifdef EFORMAT if (errno == EFORMAT) { errno = duperrno; return(0); } # endif if (errno == EIO) errno = ENODEV; if ((errno != EROFS && errno != EACCES) || i == (O_BINARY | O_RDONLY) || (fd = open(devp -> ch_name, O_BINARY | O_RDONLY, 0666)) < 0) { doserrno = errno; errno = duperrno; return(-1); } devp -> flags |= F_RONLY; } # if defined (LINUX) && defined (BLKFLSBUF) VOID_C ioctl(fd, BLKFLSBUF, 0); # endif cc = 0; for (i = 0; i < SLISTSIZ; i++) if (cc < sectsizelist[i]) cc = sectsizelist[i]; if (!(buf = (char *)malloc(cc))) { close(fd); doserrno = errno; errno = duperrno; return(-1); } for (i = 0; i < SLISTSIZ; i++) { # ifdef HDDMOUNT if (Xllseek(fd, devp -> offset, L_SET) < (l_off_t)0) # else if (Xllseek(fd, (l_off_t)0, L_SET) < (l_off_t)0) # endif { i = SLISTSIZ; break; } while ((cc = read(fd, buf, sectsizelist[i])) < 0) { if (dosintrfunc && (*dosintrfunc)()) { close(fd); doserrno = EINTR; errno = duperrno; return(-1); } if (errno != EINTR) break; } if (cc >= 0) break; } if (i >= SLISTSIZ) { close(fd); free(buf); errno = duperrno; return(0); } bpb = (bpb_t *)buf; devp -> fd = newdup(fd); } #endif /* !MSDOS */ total = byte2word(bpb -> total); if (!total) total = byte2dword(bpb -> bigtotal); #if !MSDOS # ifdef HDDMOUNT if (devp -> ch_cyl) # endif { int nh, ns; nh = byte2word(bpb -> nhead); ns = byte2word(bpb -> secttrack); if (!nh || !ns || nh != devp -> ch_head || ns != nsect || (total + (nh * ns / 2)) / (nh * ns) != devp -> ch_cyl) { if (bpb != bpbcache) memcpy((char *)bpbcache, (char *)bpb, sizeof(bpb_t)); if (buf) free(buf); errno = duperrno; return(0); } } #endif /* !MSDOS */ devp -> clustsize = bpb -> clustsize; devp -> sectsize = byte2word(bpb -> sectsize); if (!(devp -> clustsize) || !(devp -> sectsize)) { if (buf) free(buf); errno = duperrno; return(-1); } devp -> fatofs = byte2word(bpb -> bootsect); devp -> fatsize = byte2word(bpb -> fatsize); devp -> dirsize = (u_long)byte2word(bpb -> maxdir) * DOSDIRENT / (u_long)(devp -> sectsize); if (devp -> fatsize && devp -> dirsize) devp -> rootdir = 0L; else { if (!(devp -> fatsize)) devp -> fatsize = byte2dword(bpb -> bigfatsize); devp -> dirsize = 0; devp -> rootdir = byte2dword(bpb -> rootdir); devp -> flags |= F_FAT32; } devp -> dirofs = devp -> fatofs + (devp -> fatsize * bpb -> nfat); total -= devp -> dirofs + (u_long)(devp -> dirsize); devp -> totalsize = total / (devp -> clustsize); devp -> availsize = (u_long)0xffffffff; if (!(devp -> flags & F_FAT32)) { if (!strncmp(bpb -> fsname, FS_FAT, sizeof(bpb -> fsname)) || !strncmp(bpb -> fsname, FS_FAT12, sizeof(bpb -> fsname))) devp -> flags &= ~F_16BIT; else if (!strncmp(bpb -> fsname, FS_FAT16, sizeof(bpb -> fsname)) || devp -> totalsize > MAX12BIT) devp -> flags |= F_16BIT; } if (buf) free(buf); errno = duperrno; return(1); } #if !MSDOS static int NEAR readbpb(devp, drv) devstat *devp; int drv; { bpb_t bpb; CONST char *cp; int i, ret; cp = NULL; devp -> fd = -1; for (i = 0; fdtype[i].name; i++) { if (drv != (int)fdtype[i].drive) continue; if (!cp || strcmp(cp, fdtype[i].name)) { bpb.nfat = 0; if ((devp -> fd) >= 0) close(devp -> fd); memset((char *)devp, 0, sizeof(devstat)); devp -> fd = -1; } memcpy((char *)devp, (char *)&(fdtype[i]), sizeof(devinfo)); cp = fdtype[i].name; if ((ret = _readbpb(devp, &bpb)) < 0) return(-1); if (ret > 0) break; } if (!fdtype[i].name) { if ((devp -> fd) >= 0) close(devp -> fd); doserrno = ENODEV; return(-1); } return(0); } #endif /* !MSDOS */ #ifdef HDDMOUNT static l_off_t *NEAR _readpt(offset, extoffset, fd, head, sect, secsiz) l_off_t offset, extoffset; int fd, head, sect, secsiz; { partition_t *pt; partition98_t *pt98; u_char *cp, *buf; l_off_t ofs, *sp, *tmp, *slice; int i, n, nslice, pofs, ps, pn, beg, siz; if (head) { ps = PART98_SIZE; pofs = PART98_TABLE; pn = PART98_NUM; } else { ps = PART_SIZE; pofs = PART_TABLE; pn = PART_NUM; } beg = (pofs / DEV_BSIZE) * DEV_BSIZE; siz = ((pofs + ps * pn - 1) / DEV_BSIZE + 1) * DEV_BSIZE - beg; if (!(slice = (l_off_t *)malloc(2 * sizeof(l_off_t)))) return(NULL); slice[nslice = 0] = (l_off_t)secsiz; slice[++nslice] = (l_off_t)0; if (Xllseek(fd, offset + beg, L_SET) < (l_off_t)0) return(slice); if (!(buf = (u_char *)malloc(siz))) { free(slice); return(NULL); } while ((i = read(fd, buf, siz)) < 0 && errno == EINTR); if (i < 0 || (!head && (buf[siz - 2] != 0x55 || buf[siz - 1] != 0xaa))) { free(buf); return(slice); } cp = &(buf[pofs - beg]); for (i = 0; i < pn; i++, cp += ps) { if (head) { pt98 = (partition98_t *)cp; if (pt98 -> filesys != PT98_FAT12 && pt98 -> filesys != PT98_FAT16 && pt98 -> filesys != PT98_FAT16X && pt98 -> filesys != PT98_FAT32) continue; ofs = byte2word(pt98 -> s_cyl); ofs = ofs * head + pt98 -> s_head; ofs = ofs * sect + pt98 -> s_sect; ofs *= secsiz; } else { pt = (partition_t *)cp; ofs = byte2dword(pt -> f_sect); ofs *= secsiz; if (pt -> filesys == PT_EXTEND || pt -> filesys == PT_EXTENDLBA) { if (extoffset) ofs += extoffset; else extoffset = ofs; sp = _readpt(ofs, extoffset, fd, 0, 0, secsiz); if (!sp) { free(buf); free(slice); return(NULL); } for (n = 0; sp[n + 1]; n++); if (!n) { free(sp); continue; } siz = (nslice + n + 1) * sizeof(l_off_t); if (!(tmp = (l_off_t *)realloc(slice, siz))) { free(buf); free(slice); free(sp); return(NULL); } slice = tmp; memcpy((char *)&(slice[nslice]), (char *)&(sp[1]), n * sizeof(l_off_t)); slice[nslice += n] = (l_off_t)0; free(sp); continue; } else if (pt -> filesys != PT_FAT12 && pt -> filesys != PT_FAT16 && pt -> filesys != PT_FAT16X && pt -> filesys != PT_FAT32 && pt -> filesys != PT_FAT32LBA && pt -> filesys != PT_FAT16XLBA) continue; ofs += offset; } siz = (nslice + 1 + 1) * sizeof(l_off_t); if (!(tmp = (l_off_t *)realloc(slice, siz))) { free(buf); free(slice); return(NULL); } slice = tmp; slice[nslice++] = ofs; slice[nslice] = (l_off_t)0; } free(buf); return(slice); } l_off_t *readpt(devfile, pc98) CONST char *devfile; int pc98; { # ifdef DIOCGDINFO struct disklabel dl; l_off_t *slice; int fd, head, sect, size; if ((fd = open(devfile, O_BINARY | O_RDONLY, 0666)) < 0) { if (errno == EIO) errno = ENODEV; return(NULL); } /* hack for disk initialize */ read(fd, &head, sizeof(head)); head = sect = 0; if (ioctl(fd, DIOCGDINFO, &dl) < 0) { close(fd); return(NULL); } if (pc98) { head = dl.d_ntracks; sect = dl.d_nsectors; } # ifdef SOLARIS { struct vtoc toc; if (ioctl(fd, DKIOCGVTOC, &toc) < 0) { close(fd); return(NULL); } size = toc.v_sectorsz; } # else size = D_SECSIZE(dl); # endif slice = _readpt((l_off_t)0, (l_off_t)0, fd, head, sect, size); close(fd); return(slice); # else /* !DIOCGDINFO */ errno = ENODEV; return(NULL); # endif /* !DIOCGDINFO */ } #endif /* HDDMOUNT */ static int NEAR opendev(drive) int drive; { devstat dev; int i, new, drv; if (!drive) { doserrno = ENODEV; return(-1); } for (new = 0; new < maxdev; new++) if (!(devlist[new].drive)) break; if (new >= DOSNOFILE || maxorder >= DOSNOFILE) { doserrno = EMFILE; return(-1); } drv = toupper2(drive); for (i = maxorder - 1; i >= 0; i--) if (drv == (int)devlist[devorder[i]].drive) break; if (i >= 0) { memcpy((char *)&dev, (char *)&(devlist[devorder[i]]), sizeof(devstat)); dev.flags |= F_DUPL; dev.flags &= ~(F_CACHE | F_WRFAT); } else { if (readbpb(&dev, drv) < 0) return(-1); dev.dircache = NULL; if (readfat(&dev) < 0) { #if !MSDOS close(dev.fd); #endif return(-1); } } if (islower2(drive)) dev.flags |= F_VFAT; else dev.flags &= ~F_VFAT; memcpy((char *)&(devlist[new]), (char *)&dev, sizeof(devstat)); devlist[new].nlink = 1; if (new >= maxdev) maxdev++; devorder[maxorder++] = new; return(new); } static int NEAR closedev(dd) int dd; { int i, ret, duperrno; if (dd < 0 || dd >= maxdev || !devlist[dd].drive) { doserrno = EBADF; return(-1); } if (devlist[dd].nlink > 0) devlist[dd].nlink--; if (devlist[dd].nlink > 0) return(0); duperrno = errno; ret = 0; if (!(devlist[dd].flags & F_DUPL)) { for (i = 0; i < maxdev; i++) if (i != dd && devlist[i].drive == devlist[dd].drive && (devlist[i].flags & F_DUPL)) break; if (i < maxdev) { devlist[i].flags &= ~F_DUPL; if ((devlist[dd].flags & F_CACHE) && !(devlist[i].flags & F_CACHE)) { devlist[i].dircache = devlist[dd].dircache; devlist[i].flags |= F_CACHE; devlist[dd].flags &= ~F_CACHE; } devlist[i].flags |= (devlist[dd].flags & F_WRFAT); devlist[dd].flags |= F_DUPL; devlist[dd].flags &= ~F_WRFAT; } } if (writefat(&(devlist[dd])) < 0) ret = -1; if (devlist[dd].flags & F_CACHE) free(devlist[dd].dircache); if (devlist[dd].flags & F_DUPL) flushcache(&(devlist[dd])); else { for (i = maxsectcache - 1; i >= 0; i -= cachesize[i]) { if (cachedrive[i] == devlist[dd].drive && shiftcache(&(devlist[dd]), i, -1) > SECTCACHESIZE) ret = -1; } if (devlist[dd].fatbuf) free(devlist[dd].fatbuf); #if !MSDOS close(devlist[dd].fd); #endif } for (i = maxorder - 1; i >= 0; i--) if (devorder[i] == dd) break; if (i >= 0) memmove((char *)&(devorder[i]), (char *)&(devorder[i + 1]), (--maxorder - i) * sizeof(*devorder)); devlist[dd].drive = '\0'; while (maxdev > 0 && !devlist[maxdev - 1].drive) maxdev--; errno = duperrno; return(ret); } int preparedrv(drive, ddp) int drive, *ddp; { int i, drv; if (!drive) i = -1; else { drv = toupper2(drive); for (i = maxdev - 1; i >= 0; i--) if (drv == (int)devlist[i].drive) break; if (i >= 0) devlist[i].nlink++; else { if (doswaitfunc) (*doswaitfunc)(); if ((i = opendev(drive)) < 0) reterr(-1); } } *ddp = i; return(0); } VOID shutdrv(dd) int dd; { int duperrno; if (dd < 0) return; duperrno = errno; VOID_C closedev(dd); errno = duperrno; } int flushdrv(drive, func) int drive; VOID_T (*func)__P_((VOID_A)); { devstat dev; u_long avail; int i, dd, drv, ret, duperrno; drv = toupper2(drive); duperrno = errno; ret = 0; dd = -1; for (i = maxorder - 1; i >= 0; i--) { if (drv != (int)devlist[devorder[i]].drive) continue; if (writefat(&(devlist[devorder[i]])) < 0) { duperrno = doserrno; ret = -1; } if (!(devlist[devorder[i]].flags & F_DUPL)) dd = devorder[i]; if (devlist[devorder[i]].flags & F_CACHE) { free(devlist[devorder[i]].dircache); devlist[devorder[i]].dircache = NULL; devlist[devorder[i]].flags &= ~F_CACHE; } } if (dd < 0) { if (func) (*func)(); errno = duperrno; return(ret); } for (i = maxsectcache - 1; i >= 0; i -= cachesize[i]) { if (drv != cachedrive[i]) continue; if (shiftcache(&(devlist[dd]), i, -1) > SECTCACHESIZE) { duperrno = doserrno; ret = -1; } } if (devlist[dd].fatbuf) free(devlist[dd].fatbuf); if (devlist[dd].dircache) free(devlist[dd].dircache); avail = devlist[dd].availsize; #if !MSDOS close(devlist[dd].fd); #endif if (func) (*func)(); #if !MSDOS sync(); sync(); #endif if (readbpb(&dev, drv) < 0) { duperrno = doserrno; ret = -1; } else { dev.dircache = NULL; dev.availsize = avail; if (readfat(&dev) < 0) { #if !MSDOS close(dev.fd); #endif return(-1); } } if (islower2(drive)) dev.flags |= F_VFAT; else dev.flags &= ~F_VFAT; memcpy((char *)&(devlist[dd]), (char *)&dev, sizeof(devstat)); errno = duperrno; return(ret); } static int NEAR calcsum(name) CONST u_char *name; { int i, sum; for (i = sum = 0; i < 8 + 3; i++) { sum = (((sum & 0x01) << 7) | ((sum & 0xfe) >> 1)); sum += name[i]; } return(sum & 0xff); } static u_int NEAR lfnencode(c1, c2) u_int c1, c2; { c1 &= 0xff; c2 &= 0xff; #if MSDOS if (!c1 && (c2 < ' ' || strchr(NOTINLFN, c2))) return(0xffff); #else if (!c1 && (c2 < ' ' || strchr(NOTINLFN, c2))) return('_'); #endif return(cnvunicode((c1 << 8) | c2, 1)); } static u_int NEAR lfndecode(c1, c2) u_int c1, c2; { c1 &= 0xff; c2 &= 0xff; return(cnvunicode((c1 << 8) | c2, 0)); } #if !MSDOS static int NEAR transchar(c) int c; { if (c == '+') return('`'); if (c == ',') return('\''); if (c == '[') return('&'); if (c == '.') return('$'); return('\0'); } static int NEAR detranschar(c) int c; { if (c == '`') return('+'); if (c == '\'') return(','); if (c == '&') return('['); if (c == '$') return('.'); return('\0'); } #endif /* !MSDOS */ static int NEAR sfntranschar(c) int c; { if ((u_char)c < ' ' || strchr(NOTINLFN, c)) return(-2); if (strchr(NOTINALIAS, c)) return(-1); if (strchr(PACKINALIAS, c)) return(0); return(toupper2(c)); } static int NEAR cmpdospath(path1, path2, len, part) CONST char *path1, *path2; int len, part; { CONST char *cp; u_int w1, w2; int i, c1, c2; if (len < 0) len = strlen(path1); if ((cp = strrdelim(path1, 1))) cp++; else cp = path1; if (!isdotdir(cp)) while (len > 0 && strchr(PACKINALIAS, path1[len - 1])) len--; for (i = 0; i < len; i++) { c1 = (u_char)(path1[i]); c2 = (u_char)(path2[i]); if (!issjis1(c1) || !issjis2(c2)) { if (!c1 || !c2 || toupper2(c1) != toupper2(c2)) return(c1 - c2); } else { if (++i >= len) return(-path2[i]); if (!path1[i] || !path2[i]) return(path1[i] - path2[i]); w1 = unifysjis((c1 << 8) | (u_char)(path1[i]), 0); w2 = unifysjis((c2 << 8) | (u_char)(path2[i]), 0); if (w1 != w2) return(w1 - w2); } } if (!path2[i]) return(0); else if (part && path2[i] == _SC_) return(0); return(-path2[i]); } static char *NEAR getdosname(buf, name, ext) char *buf; CONST u_char *name, *ext; { int i, len; for (i = 0; i < 8 && name[i] != ' '; i++) buf[i] = name[i]; len = i; if (*ext != ' ') { buf[len++] = '.'; for (i = 0; i < 3 && ext[i] != ' '; i++) buf[len + i] = ext[i]; len += i; } buf[len] = '\0'; if (buf[0] == 0x05) ((u_char *)buf)[0] = 0xe5; return(buf); } static u_char *NEAR putdosname(buf, file, vol) u_char *buf; CONST char *file; int vol; { CONST char *cp, *eol; char num[7]; u_int w; int i, j, c, cnv; if (isdotdir(file)) { strcpy((char *)buf, file); return(buf); } for (i = strlen(file); i > 0; i--) if (!strchr(PACKINALIAS, file[i - 1])) break; if (i <= 0) return(NULL); eol = &(file[i]); for (cp = eol - 1; cp > file; cp--) if (*cp == '.') break; if (cp <= file) cp = NULL; cnv = 0; for (i = 0; i < 8; i++) { if (file == cp || file == eol || !*file) buf[i] = ' '; else if (issjis1(*file) && issjis2(file[1])) { w = ((u_int)(*file) << 8) | (u_char)(file[1]); w = unifysjis(w, vol); buf[i++] = (w >> 8) & 0xff; buf[i] = w & 0xff; file += 2; } #if !MSDOS else if (!vol && (c = transchar(*file)) > 0) { buf[i] = c; file++; } #endif else { if ((c = sfntranschar(*(file++))) > 0) buf[i] = c; #if MSDOS else if (c < -1) { dependdosfunc = 1; return(NULL); } #endif else { cnv = 1; if (!c) i--; else buf[i] = '_'; } } } if (file != cp && file < eol && *file) cnv = 1; if (cp) cp++; for (i = 8; i < 11; i++) { if (!cp || cp == eol || !*cp) buf[i] = ' '; else if (issjis1(*cp) && issjis2(cp[1])) { buf[i++] = *((u_char *)(cp++)); buf[i] = *((u_char *)(cp++)); } #if !MSDOS else if (!vol && (c = transchar(*cp)) > 0) { buf[i] = c; cp++; } #endif else { if ((c = sfntranschar(*(cp++))) > 0) buf[i] = c; #if MSDOS else if (c < -1) { dependdosfunc = 1; return(NULL); } #endif else { cnv = 1; if (!c) i--; else buf[i] = '_'; } } } if (cp && cp < eol && *cp) cnv = 1; buf[i] = '\0'; if (vol > 1 || (vol > 0 && cnv)) { for (j = 0; j < arraysize(num); j++) { if (!vol) break; num[j] = (vol % 10) + '0'; vol /= 10; } for (i = arraysize(num) - j; i > 0; i--) if (buf[i - 1] != ' ') break; buf[i++] = '~'; while (j-- > 0) buf[i++] = num[j]; } if (buf[0] == 0xe5) buf[0] = 0x05; return(buf); } static u_int NEAR getdosmode(attr) u_int attr; { u_int mode; mode = 0; if (!(attr & DS_IHIDDEN)) mode |= S_IREAD; if (!(attr & DS_IRDONLY)) mode |= S_IWRITE; mode |= (mode >> 3) | (mode >> 6); #if MSDOS if (attr & DS_IARCHIVE) mode |= S_ISVTX; #endif if (attr & DS_IFDIR) mode |= (S_IFDIR | S_IEXEC_ALL); else if (attr & DS_IFLABEL) mode |= S_IFIFO; else if (attr & DS_IFSYSTEM) mode |= S_IFSOCK; else mode |= S_IFREG; return(mode); } static u_int NEAR putdosmode(mode) u_int mode; { u_int attr; attr = 0; #if MSDOS if (mode & S_ISVTX) attr |= DS_IARCHIVE; #endif if (!(mode & S_IREAD)) attr |= DS_IHIDDEN; if (!(mode & S_IWRITE)) attr |= DS_IRDONLY; if ((mode & S_IFMT) == S_IFDIR) attr |= DS_IFDIR; else { #if !MSDOS attr |= DS_IARCHIVE; #endif if ((mode & S_IFMT) == S_IFIFO) attr |= DS_IFLABEL; else if ((mode & S_IFMT) == S_IFSOCK) attr |= DS_IFSYSTEM; } return(attr); } static time_t NEAR getdostime(d, t) u_int d, t; { struct tm tm; tm.tm_year = 1980 + ((d >> 9) & 0x7f); tm.tm_year -= 1900; tm.tm_mon = ((d >> 5) & 0x0f) - 1; tm.tm_mday = (d & 0x1f); tm.tm_hour = ((t >> 11) & 0x1f); tm.tm_min = ((t >> 5) & 0x3f); tm.tm_sec = ((t << 1) & 0x3e); return(timelocal2(&tm)); } static int NEAR putdostime(buf, tim) u_char *buf; time_t tim; { #if MSDOS struct timeb buffer; #else struct timeval t_val; struct timezone tz; #endif struct tm *tm; time_t tmp; u_int d, t; int mt; if (tim != (time_t)-1) { tmp = tim; mt = 0; } else { #if MSDOS ftime(&buffer); tmp = (time_t)(buffer.time); mt = (int)(buffer.millitm); #else gettimeofday2(&t_val, &tz); tmp = (time_t)(t_val.tv_sec); mt = (int)(t_val.tv_usec / 1000); #endif } tm = localtime(&tmp); d = (((tm -> tm_year - 80) & 0x7f) << 9) + (((tm -> tm_mon + 1) & 0x0f) << 5) + (tm -> tm_mday & 0x1f); t = ((tm -> tm_hour & 0x1f) << 11) + ((tm -> tm_min & 0x3f) << 5) + ((tm -> tm_sec & 0x3e) >> 1); if (!t && tim == (time_t)-1) t = 0x0001; buf[0] = t & 0xff; buf[1] = (t >> 8) & 0xff; buf[2] = d & 0xff; buf[3] = (d >> 8) & 0xff; return(mt); } static int NEAR getdrive(path) CONST char *path; { int i, drive; if (!(drive = __dospath(path))) { doserrno = ENOENT; return(-1); } if (lastdrive < 0) { for (i = 0; i < 'Z' - 'A' + 1; i++) curdir[i] = NULL; lastdrive = drive; } return(drive); } static int NEAR parsepath(buf, path, class) char *buf; CONST char *path; int class; { char *cp; int i, n, drv, drive; cp = buf; if ((drive = getdrive(path)) < 0) return(-1); drv = toupper2(drive) - 'A'; path += 2; #if MSDOS if (*path != '/' && *path != '\\') { *buf = _SC_; if (checkdrive(drv) <= 0) { if (!unixgetcurdir(&(buf[1]), drv + 1)) buf[1] = '\0'; } else if (curdir[drv]) strcpy(&(buf[1]), curdir[drv]); else *buf = '\0'; #else if (*path != '/' && *path != '\\' && curdir[drv] && *(curdir[drv])) { *buf = _SC_; strcpy(&(buf[1]), curdir[drv]); #endif cp += strlen(buf); } while (*path) { for (i = 0; path[i] && path[i] != '/' && path[i] != '\\'; i++) if (issjis1(path[i]) && issjis2(path[i + 1])) i++; if (class && !path[i]) { if ((i == 1 && path[0] == '.') || (i == 2 && path[0] == '.' && path[1] == '.')) { *(cp++) = _SC_; strncpy(cp, path, i); cp += i; } else { n = i; if (i && path[i - 1] == '.') n--; if (cp + 1 + n - buf >= DOSMAXPATHLEN - 2 - 1) { doserrno = ENAMETOOLONG; return(-1); } *(cp++) = _SC_; strncpy(cp, path, n); cp += n; } } else if (!i || (i == 1 && path[0] == '.')) /*EMPTY*/; else if (i == 2 && path[0] == '.' && path[1] == '.') { cp = strrdelim2(buf, cp); if (!cp) cp = buf; } else { n = i; if (path[i - 1] == '.') n--; if (cp + 1 + n - buf >= DOSMAXPATHLEN - 2 - 1) { doserrno = ENAMETOOLONG; return(-1); } *(cp++) = _SC_; strncpy(cp, path, n); cp += n; } if (*(path += i)) path++; } if (cp == buf) *(cp++) = _SC_; else if (isdelim(buf, cp - 1 - buf)) cp--; *cp = '\0'; return(drive); } static dosDIR *NEAR _dosopendir(path, resolved, needlfn) CONST char *path; char *resolved; int needlfn; { dosDIR *xdirp; struct dosdirent *dp; dent_t *dentp; cache_t *cache; CONST char *cp; char *cachepath, buf[DOSMAXPATHLEN - 2]; int len, dd, drive, rlen, duperrno; rlen = 0; duperrno = errno; if ((drive = parsepath(buf, path, 0)) < 0 || (dd = opendev(drive)) < 0) return(NULL); path = buf + 1; if (!devlist[dd].dircache) { cache = NULL; cp = NULL; } else { cache = devlist[dd].dircache; cp = cache -> path; } if (!(devlist[dd].dircache = (cache_t *)malloc(sizeof(cache_t)))) { closedev(dd); doserrno = errno; errno = duperrno; return(NULL); } devlist[dd].flags |= F_CACHE; cachepath = dd2path(dd); if (!(xdirp = (dosDIR *)malloc(sizeof(dosDIR)))) { closedev(dd); doserrno = errno; errno = duperrno; return(NULL); } xdirp -> dd_id = DID_IFDOSDRIVE; xdirp -> dd_fd = dd; xdirp -> dd_top = xdirp -> dd_off = 0L; xdirp -> dd_loc = 0L; xdirp -> dd_size = (long)(devlist[dd].clustsize) * (long)(devlist[dd].sectsize); if (!(xdirp -> dd_buf = (char *)malloc(xdirp -> dd_size))) { _dosclosedir(xdirp); doserrno = errno; errno = duperrno; return(NULL); } if (resolved) rlen = gendospath(resolved, drive, _SC_) - resolved; if (cp && (len = strlen(cp)) > 0) { if (isdelim(cp, len - 1)) len--; if (!cmpdospath(cp, path, len, 1)) { xdirp -> dd_top = xdirp -> dd_off = clust32(&(devlist[dd]), &(cache -> dent)); memcpy((char *)devlist[dd].dircache, (char *)cache, sizeof(cache_t)); cachepath += len; *(cachepath++) = _SC_; path += len; if (*path) path++; if (resolved) { if (rlen > 3) resolved[rlen++] = _SC_; strncpy(&(resolved[rlen]), cp, len); rlen += len; resolved[rlen] = '\0'; } } } *cachepath = '\0'; while (*path) { cp = path; if ((path = strdelim(path, 0))) len = (path++) - cp; else { len = strlen(cp); path = cp + len; } if (!len || (len == 1 && *cp == '.')) continue; if (!(dp = finddirent(xdirp, cp, len, needlfn))) { errno = (doserrno) ? doserrno : ENOENT; _dosclosedir(xdirp); doserrno = errno; errno = duperrno; return(NULL); } if (resolved) { char name[8 + 1 + 3 + 1]; int flen; if (needlfn) cp = dp -> d_name; else { getdosname(name, dd2dentp(xdirp -> dd_fd) -> name, dd2dentp(xdirp -> dd_fd) -> ext); cp = name; } flen = strlen(cp); if (rlen + 1 + flen >= DOSMAXPATHLEN) { _dosclosedir(xdirp); doserrno = ENAMETOOLONG; errno = duperrno; return(NULL); } if (rlen > 3) resolved[rlen++] = _SC_; strcpy(&(resolved[rlen]), cp); rlen += flen; } dentp = (dent_t *)&(xdirp -> dd_buf[dp -> d_fileno]); xdirp -> dd_top = xdirp -> dd_off = clust32(&(devlist[dd]), dentp); xdirp -> dd_loc = 0L; cachepath += len; *(cachepath++) = _SC_; *cachepath = '\0'; } if (*(dd2path(dd)) && !(dd2dentp(dd) -> attr & DS_IFDIR)) { _dosclosedir(xdirp); doserrno = ENOTDIR; errno = duperrno; return(NULL); } errno = duperrno; return(xdirp); } static int NEAR _dosclosedir(xdirp) dosDIR *xdirp; { int ret, duperrno; duperrno = errno; if (xdirp -> dd_id != DID_IFDOSDRIVE) return(0); if (xdirp -> dd_buf) free(xdirp -> dd_buf); ret = closedev(xdirp -> dd_fd); free(xdirp); errno = duperrno; return(ret); } DIR *dosopendir(path) CONST char *path; { dosDIR *xdirp; if (!(xdirp = _dosopendir(path, NULL, 0))) reterr(NULL); return((DIR *)xdirp); } int dosclosedir(dirp) DIR *dirp; { if (_dosclosedir((dosDIR *)dirp) < 0) reterr(-1); return(0); } static int NEAR seekdent(xdirp, dentp, clust, offset) dosDIR *xdirp; dent_t *dentp; long clust, offset; { long next; if (xdirp -> dd_id != DID_IFDOSDRIVE) { doserrno = EINVAL; return(-1); } xdirp -> dd_off = clust; next = clustread(&(devlist[xdirp -> dd_fd]), (u_char *)(xdirp -> dd_buf), xdirp -> dd_off); if (next < 0L) return(-1); dd2clust(xdirp -> dd_fd) = xdirp -> dd_off; xdirp -> dd_off = next; dd2offset(xdirp -> dd_fd) = xdirp -> dd_loc = offset; if (dentp) memcpy((char *)dentp, (char *)&(xdirp -> dd_buf[xdirp -> dd_loc]), sizeof(dent_t)); xdirp -> dd_loc += DOSDIRENT; if (xdirp -> dd_loc >= xdirp -> dd_size) xdirp -> dd_loc = 0L; return(0); } static int NEAR readdent(xdirp, dentp, force) dosDIR *xdirp; dent_t *dentp; int force; { long next; if (xdirp -> dd_id != DID_IFDOSDRIVE) { doserrno = EINVAL; return(-1); } if (!xdirp -> dd_loc) { next = clustread(&(devlist[xdirp -> dd_fd]), (u_char *)(xdirp -> dd_buf), xdirp -> dd_off); if (next < 0L) return(-1); dd2clust(xdirp -> dd_fd) = xdirp -> dd_off; xdirp -> dd_off = next; } dd2offset(xdirp -> dd_fd) = xdirp -> dd_loc; memcpy((char *)dentp, (char *)&(xdirp -> dd_buf[xdirp -> dd_loc]), sizeof(dent_t)); if (force || dentp -> name[0]) { xdirp -> dd_loc += DOSDIRENT; if (xdirp -> dd_loc >= xdirp -> dd_size) xdirp -> dd_loc = 0L; } return(0); } static struct dosdirent *NEAR _dosreaddir(xdirp, all) dosDIR *xdirp; int all; { dent_t *dentp; static st_dosdirent d; struct dosdirent *dp; char *cp, buf[LFNENTSIZ * 2 + 1]; long loc, clust, offset; u_int ch; int i, j, cnt, sum; dp = (struct dosdirent *)&d; dentp = dd2dentp(xdirp -> dd_fd); dp -> d_name[0] = '\0'; dp -> d_reclen = DOSDIRENT; cnt = -1; clust = -1; offset = 0L; sum = -1; for (;;) { loc = xdirp -> dd_loc; if (readdent(xdirp, dentp, 0) < 0 || !(dentp -> name[0])) { *dd2path(xdirp -> dd_fd) = '\0'; doserrno = 0; cnvunicode(0, -1); return(NULL); } if (dentp -> name[0] == 0xe5) { dp -> d_name[0] = '\0'; dp -> d_reclen = DOSDIRENT; cnt = -1; continue; } if (dentp -> attr != DS_IFLFN) break; cp = (char *)dentp; if (cnt > 0 && cnt == *cp + 1 && sum == dentp -> checksum) cnt--; else { dp -> d_name[0] = '\0'; dp -> d_reclen = DOSDIRENT; if ((cnt = *cp - '@') < 0) continue; lfn_clust = dd2clust(xdirp -> dd_fd); lfn_offset = dd2offset(xdirp -> dd_fd); sum = dentp -> checksum; } if (!(devlist[xdirp -> dd_fd].flags & F_VFAT)) continue; dp -> d_reclen += DOSDIRENT; for (i = 1, j = 0; i < DOSDIRENT; i += 2, j++) { if (cp + i == (char *)&(dentp -> attr)) i += 3; else if (cp + i == (char *)(dentp -> clust)) i += 2; if (!(ch = lfndecode(cp[i + 1], cp[i]))) break; if (ch & 0xff00) buf[j++] = (ch >> 8) & 0xff; buf[j] = ch & 0xff; } i = strlen(dp -> d_name); if (i + j > MAXNAMLEN && (j = MAXNAMLEN - i) < 0) j = 0; buf[j] = '\0'; if (j > 0) { memmove(&(dp -> d_name[j]), dp -> d_name, strlen(dp -> d_name) + 1); memcpy(dp -> d_name, buf, j); } clust = xdirp -> dd_off; offset = xdirp -> dd_loc; } dp -> d_fileno = loc; if (cnt != 1) dp -> d_name[0] = '\0'; else if (sum != calcsum(dd2dentp(xdirp -> dd_fd) -> name)) { cnt = -1; dp -> d_name[0] = '\0'; } if (cnt <= 0) lfn_clust = -1; if (!dp -> d_name[0]) { getdosname(dp -> d_name, dd2dentp(xdirp -> dd_fd) -> name, dd2dentp(xdirp -> dd_fd) -> ext); #if MSDOS dp -> d_alias[0] = '\0'; #endif } else { #if MSDOS getdosname(dp -> d_alias, dd2dentp(xdirp -> dd_fd) -> name, dd2dentp(xdirp -> dd_fd) -> ext); #endif if (all) { xdirp -> dd_off = clust; xdirp -> dd_loc = offset; } } if ((cp = strrdelim(dd2path(xdirp -> dd_fd), 0))) cp++; else cp = dd2path(xdirp -> dd_fd); strcpy(cp, dp -> d_name); cnvunicode(0, -1); return(dp); } struct dosdirent *dosreaddir(dirp) DIR *dirp; { dosDIR *xdirp; struct dosdirent *dp; int i; #if !MSDOS int c; #endif xdirp = (dosDIR *)dirp; if (!(dp = _dosreaddir(xdirp, 0))) reterr(NULL); if (!(devlist[xdirp -> dd_fd].flags & F_VFAT)) { for (i = 0; dp -> d_name[i]; i++) { if (issjis1(dp -> d_name[i]) && issjis2(dp -> d_name[i + 1])) i++; #if !MSDOS else if ((c = detranschar(dp -> d_name[i]))) dp -> d_name[i] = c; else dp -> d_name[i] = tolower2(dp -> d_name[i]); #endif } } return(dp); } static struct dosdirent *NEAR finddirent(xdirp, fname, len, needlfn) dosDIR *xdirp; CONST char *fname; int len, needlfn; { struct dosdirent *dp; u_char dosname[8 + 3 + 1]; char tmp[8 + 1 + 3 + 1]; if (len <= 0) len = strlen(fname); if (devlist[xdirp -> dd_fd].flags & F_VFAT) { if (needlfn) while ((dp = _dosreaddir(xdirp, 1))) { getdosname(tmp, dd2dentp(xdirp -> dd_fd) -> name, dd2dentp(xdirp -> dd_fd) -> ext); if (!cmpdospath(fname, tmp, len, 0) || !cmpdospath(fname, dp -> d_name, len, 0)) return(dp); } else while ((dp = _dosreaddir(xdirp, 1))) if (!cmpdospath(fname, dp -> d_name, len, 0)) return(dp); } else { if (!putdosname(dosname, fname, 0)) { doserrno = ENOENT; return(NULL); } getdosname(tmp, dosname, dosname + 8); while ((dp = _dosreaddir(xdirp, 1))) if (!cmpdospath(tmp, dp -> d_name, len, 0)) return(dp); } return(NULL); } int dosrewinddir(dirp) DIR *dirp; { dosDIR *xdirp; xdirp = (dosDIR *)dirp; if (xdirp -> dd_id != DID_IFDOSDRIVE) { errno = EINVAL; return(-1); } xdirp -> dd_loc = 0L; xdirp -> dd_off = xdirp -> dd_top; return(0); } int doschdir(path) CONST char *path; { dosDIR *xdirp; char *tmp, buf[DOSMAXPATHLEN]; int drv, drive, needlfn; if ((drive = getdrive(path)) < 0) reterr(-1); drv = toupper2(drive); needlfn = islower2(drive); if (!(xdirp = _dosopendir(path, buf, needlfn))) { if (path[2] == '/' || path[2] == '\\' || !(tmp = curdir[drv - 'A'])) reterr(-1); curdir[drv - 'A'] = NULL; xdirp = _dosopendir(path, buf, needlfn); curdir[drv - 'A'] = tmp; if (!xdirp) reterr(-1); } _dosclosedir(xdirp); if (!buf[2]) buf[3] = '\0'; if (!(tmp = (char *)malloc(strlen(&(buf[3])) + 1))) return(-1); if (curdir[drv - 'A']) free(curdir[drv - 'A']); curdir[drv - 'A'] = tmp; strcpy(curdir[drv - 'A'], &(buf[3])); lastdrive = drive; return(0); } char *dosgetcwd(pathname, size) char *pathname; int size; { char *cp; int i; if (!pathname && !(pathname = (char *)malloc(size))) return(NULL); i = toupper2(lastdrive) - 'A'; if (lastdrive < 0) { errno = EFAULT; return(NULL); } if (!(cp = curdir[i])) { errno = EFAULT; return(NULL); } if (strlen(cp) + 3 > size) { errno = ERANGE; return(NULL); } strcpy(gendospath(pathname, lastdrive, _SC_), cp); return(pathname); } static dosDIR *NEAR splitpath(pathp, resolved, needlfn) CONST char **pathp; char *resolved; int needlfn; { char dir[DOSMAXPATHLEN]; int i, j; strcpy(dir, *pathp); for (i = 1, j = 2; dir[j]; j++) { if (issjis1(dir[j]) && issjis2(dir[j + 1])) j++; else if (dir[j] == '/' || dir[j] == '\\') i = j; } *pathp += i + 1; if (i < 3) dir[i++] = _SC_; dir[i] = '\0'; if (i <= 3 && isdotdir(*pathp)) { doserrno = ENOENT; return(NULL); } return(_dosopendir(dir, resolved, needlfn)); } static int NEAR getdent(path, ddp) CONST char *path; int *ddp; { dosDIR *xdirp; char buf[DOSMAXPATHLEN]; int dd, drive, duperrno; if (ddp) *ddp = -1; if ((drive = parsepath(&(buf[2]), path, 1)) < 0 || (dd = opendev(drive)) < 0) return(-1); if (devlist[dd].dircache && buf[2] && buf[3] && !cmpdospath(dd2path(dd), &(buf[3]), -1, 0)) return(dd); buf[0] = drive; buf[1] = ':'; duperrno = errno; path = buf; if (!(xdirp = splitpath(&path, NULL, 0))) { errno = (doserrno) ? doserrno : ENOTDIR; closedev(dd); doserrno = errno; errno = duperrno; return(-1); } if (!(devlist[dd].dircache = (cache_t *)malloc(sizeof(cache_t)))) { _dosclosedir(xdirp); closedev(dd); doserrno = errno; errno = duperrno; return(-1); } devlist[dd].flags |= F_CACHE; memcpy((char *)(devlist[dd].dircache), (char *)(devlist[xdirp -> dd_fd].dircache), sizeof(cache_t)); if (!*path || (isdotdir(path) && path <= &(buf[4]))) { _dosclosedir(xdirp); dd2dentp(dd) -> attr |= DS_IFDIR; errno = duperrno; return(dd); } if (!finddirent(xdirp, path, 0, 0)) { errno = (doserrno) ? doserrno : ENOENT; _dosclosedir(xdirp); if (ddp && !doserrno) *ddp = dd; else closedev(dd); doserrno = errno; errno = duperrno; return(-1); } memcpy((char *)(devlist[dd].dircache), (char *)(devlist[xdirp -> dd_fd].dircache), sizeof(cache_t)); _dosclosedir(xdirp); errno = duperrno; return(dd); } static int NEAR writedent(dd) int dd; { u_char *buf; u_long sect; long ret, offset; if (!(sect = clust2sect(&(devlist[dd]), dd2clust(dd)))) { doserrno = EIO; return(-1); } offset = dd2offset(dd); while (offset >= (long)(devlist[dd].sectsize)) { sect++; offset -= (long)(devlist[dd].sectsize); } if (!(buf = (u_char *)malloc(devlist[dd].sectsize))) return(-1); if ((ret = sectread(&(devlist[dd]), sect, buf, 1)) >= 0L) { memcpy((char *)&(buf[offset]), (char *)dd2dentp(dd), sizeof(dent_t)); ret = sectwrite(&(devlist[dd]), sect, buf, 1); } free(buf); return(ret < 0L ? -1 : 0); } static int NEAR expanddent(dd) int dd; { long prev; prev = dd2clust(dd); if (!(devlist[dd].flags & F_FAT32) && (!prev || prev >= ROOTCLUST)) { doserrno = ENOSPC; return(-1); } if ((dd2clust(dd) = clustexpand(&(devlist[dd]), prev, 1)) < 0L) return(-1); memset((char *)dd2dentp(dd), 0, sizeof(dent_t)); dd2offset(dd) = 0L; return(0); } static int NEAR creatdent(path, mode) CONST char *path; int mode; { dosDIR *xdirp; dent_t *dentp; u_char *cp, fname[8 + 3 + 1], longfname[DOSMAXNAMLEN + 1]; CONST char *file; char tmp[8 + 1 + 3 + 1], buf[DOSMAXPATHLEN]; long clust, offset; u_int c; int i, j, n, len, cnt, sum, ret, lfn; if ((n = parsepath(&(buf[2]), path, 1)) < 0) return(-1); buf[0] = n; buf[1] = ':'; file = buf; if (!(xdirp = splitpath(&file, NULL, 0))) { if (doserrno == ENOENT) doserrno = ENOTDIR; return(-1); } if (!*file) { _dosclosedir(xdirp); doserrno = EEXIST; return(-1); } if (isdotdir(file)) { _dosclosedir(xdirp); doserrno = EACCES; return(-1); } if (!(devlist[xdirp -> dd_fd].flags & F_VFAT)) { lfn = 0; n = 0; cnt = 1; len = 0; } else { lfn = 1; n = -1; for (i = j = 0; file[i]; i++, j += 2) { if (!strchr(PACKINALIAS, file[i])) n = -1; else if (n < 0) n = i; if (!issjis1(file[i]) || !issjis2(file[i + 1])) c = lfnencode(0, file[i]); else { c = lfnencode(file[i], file[i + 1]); lfn = 2; i++; } longfname[j] = c & 0xff; longfname[j + 1] = (c >> 8) & 0xff; } cnvunicode(0, -1); if (n >= 0) j = n * 2; n = 1; cnt = j / (LFNENTSIZ * 2); len = j; if (j > cnt * LFNENTSIZ * 2) { longfname[j] = longfname[j + 1] = '\0'; len += 2; cnt++; } cnt++; } sum = -1; dentp = dd2dentp(xdirp -> dd_fd); if (!putdosname(fname, file, n)) { _dosclosedir(xdirp); doserrno = EACCES; return(-1); } for (i = 0; i < INHIBITNAMESIZ; i++) if (!strncmp((char *)fname, inhibitname[i], 8)) break; if (i < INHIBITNAMESIZ || (!strncmp((char *)fname, INHIBITCOM, strsize(INHIBITCOM)) && fname[strsize(INHIBITCOM)] > '0' && fname[strsize(INHIBITCOM)] <= '0' + INHIBITCOMMAX && fname[strsize(INHIBITCOM) + 1] == ' ') || (!strncmp((char *)fname, INHIBITLPT, strsize(INHIBITLPT)) && fname[strsize(INHIBITLPT)] > '0' && fname[strsize(INHIBITLPT)] <= '0' + INHIBITLPTMAX && fname[strsize(INHIBITLPT) + 1] == ' ')) { _dosclosedir(xdirp); doserrno = EINVAL; return(-1); } if (lfn == 1 && !strcmp(getdosname(tmp, fname, fname + 8), file)) { lfn = 0; cnt = 1; } if (lfn) sum = calcsum(fname); i = j = 0; clust = -1; offset = 0L; for (;;) { if (readdent(xdirp, dentp, 1) < 0) { if (clust >= 0) break; if (doserrno || expanddent(xdirp -> dd_fd) < 0) { *dd2path(xdirp -> dd_fd) = '\0'; _dosclosedir(xdirp); return(-1); } clust = dd2clust(xdirp -> dd_fd); offset = 0L; break; } if (!(dentp -> name[0])) break; if (dentp -> name[0] == 0xe5) { i++; if (clust < 0) { clust = dd2clust(xdirp -> dd_fd); offset = dd2offset(xdirp -> dd_fd); } continue; } if (j < i) j = i; if (j < cnt) clust = -1; i = 0; if (dentp -> attr == DS_IFLFN) continue; if (!strncmp((char *)(dentp -> name), (char *)fname, 8 + 3)) { if (!n) { *dd2path(xdirp -> dd_fd) = '\0'; _dosclosedir(xdirp); doserrno = EEXIST; return(-1); } n++; if (!putdosname(fname, file, n)) { *dd2path(xdirp -> dd_fd) = '\0'; _dosclosedir(xdirp); doserrno = EACCES; return(-1); } sum = calcsum(fname); i = j = 0; clust = -1; dosrewinddir((DIR *)xdirp); } } if (clust >= 0 && seekdent(xdirp, NULL, clust, offset) < 0) { *dd2path(xdirp -> dd_fd) = '\0'; _dosclosedir(xdirp); return(-1); } cp = (u_char *)dentp; while (--cnt > 0) { memset((char *)dentp, 0, sizeof(dent_t)); cp[0] = cnt; n = (cnt - 1) * (LFNENTSIZ * 2); if (n + (LFNENTSIZ * 2) >= len) cp[0] += '@'; dentp -> checksum = sum; dentp -> attr = DS_IFLFN; for (i = 1, j = 0; i < DOSDIRENT; i += 2, j += 2) { if (cp + i == (u_char *)&(dentp -> attr)) i += 3; else if (cp + i == (u_char *)(dentp -> clust)) i += 2; if (n + j >= len) cp[i] = cp[i + 1] = 0xff; else { cp[i] = longfname[n + j]; cp[i + 1] = longfname[n + j + 1]; } } if (writedent(xdirp -> dd_fd) < 0 || (readdent(xdirp, dentp, 1) < 0 && (doserrno || expanddent(xdirp -> dd_fd) < 0))) { *dd2path(xdirp -> dd_fd) = '\0'; _dosclosedir(xdirp); return(-1); } } memset((char *)dentp, 0, sizeof(dent_t)); memcpy(dentp -> name, (char *)fname, 8 + 3); dentp -> attr = putdosmode((u_short)mode) | DS_IARCHIVE; i = putdostime(dentp -> time, -1); if (devlist[xdirp -> dd_fd].flags & F_VFAT) { dentp -> checksum = i / 10; dentp -> ctime[0] = dentp -> time[0]; dentp -> ctime[1] = dentp -> time[1]; dentp -> cdate[0] = dentp -> adate[0] = dentp -> date[0]; dentp -> cdate[1] = dentp -> adate[1] = dentp -> date[1]; } if (writedent(xdirp -> dd_fd) < 0 || writefat(&(devlist[xdirp -> dd_fd])) < 0) ret = -1; else { ret = xdirp -> dd_fd; if ((cp = (u_char *)strrdelim(dd2path(ret), 0))) cp++; else cp = (u_char *)dd2path(ret); strcpy((char *)cp, file); } free(xdirp -> dd_buf); free(xdirp); return(ret); } static int NEAR unlinklfn(dd, clust, offset, sum) int dd; long clust, offset; int sum; { dosDIR xdir; long dupclust, dupoffset; if (clust < 0) return(0); dupclust = dd2clust(dd); dupoffset = dd2offset(dd); sum &= 0xff; xdir.dd_id = DID_IFDOSDRIVE; xdir.dd_fd = dd; xdir.dd_loc = 0L; xdir.dd_size = (long)(devlist[dd].clustsize) * (long)(devlist[dd].sectsize); xdir.dd_top = xdir.dd_off = clust; if (!(xdir.dd_buf = (char *)malloc(xdir.dd_size))) return(-1); seekdent(&xdir, dd2dentp(dd), clust, offset); *(dd2dentp(dd) -> name) = 0xe5; writedent(dd); while (readdent(&xdir, dd2dentp(dd), 0) >= 0) { if (!dd2dentp(dd) -> name[0] || dd2dentp(dd) -> name[0] == 0xe5 || (dd2clust(dd) == dupclust && dd2offset(dd) == dupoffset) || dd2dentp(dd) -> attr != 0x0f || dd2dentp(dd) -> checksum != sum) break; *(dd2dentp(dd) -> name) = 0xe5; writedent(dd); } free(xdir.dd_buf); return(0); } #if MSDOS char *dosshortname(path, alias) CONST char *path; char *alias; { dosDIR *xdirp; char *cp, buf[DOSMAXPATHLEN], name[8 + 1 + 3 + 1]; int dd, drive; name[0] = '\0'; if ((drive = parsepath(&(buf[2]), path, 1)) < 0 || (dd = opendev(drive)) < 0) reterr(NULL); if (devlist[dd].dircache && buf[2] && buf[3] && !cmpdospath(dd2path(dd), &(buf[3]), -1, 0)) getdosname(name, dd2dentp(dd) -> name, dd2dentp(dd) -> ext); buf[0] = drive; buf[1] = ':'; path = buf; *alias = '\0'; if (!(xdirp = splitpath(&path, alias, 0))) { errno = (doserrno) ? doserrno : ENOTDIR; closedev(dd); return(NULL); } cp = strcatdelim(alias); if (!*path); else if (*name) strcpy(cp, name); else if (isdotdir(path)) strcpy(cp, path); else if (finddirent(xdirp, path, 0, 0)) getdosname(cp, dd2dentp(xdirp -> dd_fd) -> name, dd2dentp(xdirp -> dd_fd) -> ext); else { errno = (doserrno) ? doserrno : ENOENT; alias = NULL; } _dosclosedir(xdirp); closedev(dd); return(alias); } char *doslongname(path, resolved) CONST char *path; char *resolved; { dosDIR *xdirp; struct dosdirent *dp; char *cp, buf[DOSMAXPATHLEN]; int dd, drive; if ((drive = parsepath(&(buf[2]), path, 1)) < 0 || (dd = opendev(drive)) < 0) reterr(NULL); buf[0] = drive; buf[1] = ':'; path = buf; *resolved = '\0'; if (!(xdirp = splitpath(&path, resolved, 1))) { errno = (doserrno) ? doserrno : ENOTDIR; closedev(dd); return(NULL); } cp = strcatdelim(resolved); if (!*path); else if ((dp = finddirent(xdirp, path, 0, 1))) strcpy(cp, dp -> d_name); else { errno = (doserrno) ? doserrno : ENOENT; resolved = NULL; } _dosclosedir(xdirp); closedev(dd); return(resolved); } #endif /* MSDOS */ int dosstatfs(drive, buf) int drive; char *buf; { long block, total, avail; int dd; if ((dd = opendev(drive)) < 0) reterr(-1); block = (long)(devlist[dd].clustsize) * (long)(devlist[dd].sectsize); total = (long)(devlist[dd].totalsize); if (availfat(&(devlist[dd])) < 0) { closedev(dd); reterr(-1); } avail = (long)(devlist[dd].availsize); *((long *)&(buf[0 * sizeof(long)])) = block; *((long *)&(buf[1 * sizeof(long)])) = total; *((long *)&(buf[2 * sizeof(long)])) = avail; buf[3 * sizeof(long)] = 0; if (devlist[dd].flags & F_FAT32) buf[3 * sizeof(long)] |= 001; closedev(dd); return(0); } int dosstat(path, stp) CONST char *path; struct stat *stp; { char *cp; int dd; if ((dd = getdent(path, NULL)) < 0) reterr(-1); stp -> st_dev = dd; stp -> st_ino = clust32(&(devlist[dd]), dd2dentp(dd)); stp -> st_mode = getdosmode(dd2dentp(dd) -> attr); stp -> st_nlink = 1; stp -> st_uid = (uid_t)-1; stp -> st_gid = (gid_t)-1; stp -> st_size = byte2dword(dd2dentp(dd) -> size); stp -> st_atime = stp -> st_mtime = stp -> st_ctime = getdostime(byte2word(dd2dentp(dd) -> date), byte2word(dd2dentp(dd) -> time)); #if !MSDOS && defined (UF_SETTABLE) && defined (SF_SETTABLE) stp -> st_flags = (u_long)0; #endif closedev(dd); if ((stp -> st_mode & S_IFMT) != S_IFDIR && (cp = strrchr(path, '.')) && strlen(++cp) == 3) { if (!strcasecmp2(cp, EXTCOM) || !strcasecmp2(cp, EXTEXE) || !strcasecmp2(cp, EXTBAT)) stp -> st_mode |= S_IEXEC_ALL; } return(0); } int doslstat(path, stp) CONST char *path; struct stat *stp; { return(dosstat(path, stp)); } int dosaccess(path, mode) CONST char *path; int mode; { struct stat st; char buf[DOSMAXPATHLEN - 2]; int dd, drive; if (dosstat(path, &st) < 0) { if (errno != ENOENT) return(-1); if ((drive = parsepath(buf, path, 1)) < 0 || (dd = opendev(drive)) < 0) { errno = ENOENT; return(-1); } closedev(dd); if (*buf != _SC_ || isdotdir(&(buf[1])) != 2) { errno = ENOENT; return(-1); } st.st_dev = dd; st.st_mode = (S_IFDIR | S_IREAD | S_IWRITE | S_IEXEC); } if (((mode & R_OK) && !(st.st_mode & S_IREAD)) || ((mode & W_OK) && (!(st.st_mode & S_IWRITE) || (devlist[st.st_dev].flags & F_RONLY))) || ((mode & X_OK) && !(st.st_mode & S_IEXEC))) { errno = EACCES; return(-1); } return(0); } #ifndef NOSYMLINK /*ARGSUSED*/ int dossymlink(name1, name2) CONST char *name1, *name2; { errno = EINVAL; return(-1); } /*ARGSUSED*/ int dosreadlink(path, buf, bufsiz) CONST char *path; char *buf; int bufsiz; { errno = EINVAL; return(-1); } #endif /* !NOSYMLINK */ int doschmod(path, mode) CONST char *path; int mode; { int dd, ret; if ((dd = getdent(path, NULL)) < 0) reterr(-1); dd2dentp(dd) -> attr = putdosmode((u_short)mode); if ((ret = writedent(dd)) < 0) errno = doserrno; closedev(dd); return(ret); } #ifdef USEUTIME int dosutime(path, times) CONST char *path; CONST struct utimbuf *times; { time_t t = times -> modtime; #else int dosutimes(path, tvp) CONST char *path; CONST struct timeval *tvp; { time_t t = tvp[1].tv_sec; #endif int dd, ret; if ((dd = getdent(path, NULL)) < 0) reterr(-1); putdostime(dd2dentp(dd) -> time, t); if ((ret = writedent(dd)) < 0) errno = doserrno; closedev(dd); return(ret); } int dosunlink(path) CONST char *path; { int dd, sum, ret; if ((dd = getdent(path, NULL)) < 0) reterr(-1); if (dd2dentp(dd) -> attr & DS_IFDIR) { errno = EPERM; return(-1); } sum = calcsum(dd2dentp(dd) -> name); *(dd2dentp(dd) -> name) = 0xe5; *dd2path(dd) = '\0'; ret = 0; if (writedent(dd) < 0 || clustfree(&(devlist[dd]), clust32(&(devlist[dd]), dd2dentp(dd))) < 0 || unlinklfn(dd, lfn_clust, lfn_offset, sum) < 0 || writefat(&(devlist[dd])) < 0) { errno = doserrno; ret = -1; } closedev(dd); return(ret); } int dosrename(from, to) CONST char *from, *to; { char buf[DOSMAXPATHLEN]; long clust, rmclust, offset; int i, dd, fd, sum, ret; if ((i = parsepath(buf, to, 0)) < 0) reterr(-1); if (toupper2(i) != toupper2(getdrive(from))) { errno = EXDEV; return(-1); } if ((dd = getdent(from, NULL)) < 0) reterr(-1); clust = lfn_clust; offset = lfn_offset; i = strlen(dd2path(dd)); if (buf[0] && buf[1] && !cmpdospath(dd2path(dd), &(buf[1]), i, 1)) { closedev(dd); errno = EINVAL; return(-1); } if (*(dd2dentp(dd) -> name) == '.') { closedev(dd); errno = EACCES; return(-1); } if ((fd = dosopen(to, O_BINARY | O_RDWR | O_CREAT, 0666)) < 0) { closedev(dd); return(-1); } fd -= DOSFDOFFSET; rmclust = clust32(fd2devp(fd), fd2dentp(fd)); sum = calcsum(dd2dentp(dd) -> name); memcpy((char *)&(fd2dentp(fd) -> attr), (char *)&(dd2dentp(dd) -> attr), (int)sizeof(dent_t) - (8 + 3)); *(dd2dentp(dd) -> name) = 0xe5; *dd2path(dd) = '\0'; free(dosflist[fd]._base); dosflist[fd]._base = NULL; while (maxdosf > 0 && !dosflist[maxdosf - 1]._base) maxdosf--; fd2clust(fd) = dosflist[fd]._clust; fd2offset(fd) = dosflist[fd]._offset; ret = 0; if (writedent(dosflist[fd]._file) < 0 || writedent(dd) < 0 || unlinklfn(dd, clust, offset, sum) < 0 || (rmclust && clustfree(&(devlist[dd]), rmclust) < 0) || writefat(&(devlist[dd])) < 0) { errno = doserrno; ret = -1; } closedev(dosflist[fd]._file); closedev(dd); return(ret); } int dosopen(path, flags, mode) CONST char *path; int flags, mode; { int fd, dd, tmp; for (fd = 0; fd < maxdosf; fd++) if (!dosflist[fd]._base) break; if (fd >= DOSNOFILE) { errno = EMFILE; return(-1); } if ((dd = getdent(path, &tmp)) < 0) { if (doserrno != ENOENT || tmp < 0 || !(flags & O_CREAT) || (dd = creatdent(path, mode & 0777)) < 0) { errno = doserrno; if (tmp >= 0) closedev(tmp); return(-1); } else { if (!(devlist[tmp].flags & F_DUPL)) devlist[dd].flags &= ~F_DUPL; devlist[tmp].flags |= F_DUPL; closedev(tmp); } } else if ((flags & O_CREAT) && (flags & O_EXCL)) { closedev(dd); errno = EEXIST; return(-1); } if ((flags & O_ACCMODE) != O_RDONLY) { tmp = 0; if (devlist[dd].flags & F_RONLY) tmp = EROFS; else if (dd2dentp(dd) -> attr & DS_IFDIR) tmp = EISDIR; if (tmp) { errno = tmp; closedev(dd); return(-1); } } if (flags & O_TRUNC) { if ((flags & O_ACCMODE) != O_RDONLY && clustfree(&(devlist[dd]), clust32(&(devlist[dd]), dd2dentp(dd))) < 0) { errno = doserrno; closedev(dd); return(-1); } dd2dentp(dd) -> size[0] = dd2dentp(dd) -> size[1] = dd2dentp(dd) -> size[2] = dd2dentp(dd) -> size[3] = 0; dd2dentp(dd) -> clust[0] = dd2dentp(dd) -> clust[1] = dd2dentp(dd) -> clust_h[0] = dd2dentp(dd) -> clust_h[1] = 0; } dosflist[fd]._base = (char *)malloc((long)(devlist[dd].clustsize) * (long)(devlist[dd].sectsize)); if (!dosflist[fd]._base) { closedev(dd); return(-1); } dosflist[fd]._cnt = 0L; dosflist[fd]._ptr = dosflist[fd]._base; dosflist[fd]._bufsize = (long)(devlist[dd].clustsize) * (long)(devlist[dd].sectsize); dosflist[fd]._flag = flags; dosflist[fd]._file = dd; dosflist[fd]._top = dosflist[fd]._next = clust32(&(devlist[dd]), dd2dentp(dd)); dosflist[fd]._off = 0L; dosflist[fd]._loc = (off_t)0; dosflist[fd]._size = (off_t)byte2dword(dd2dentp(dd) -> size); memcpy((char *)&(dosflist[fd]._dent), (char *)dd2dentp(dd), sizeof(dent_t)); dosflist[fd]._clust = dd2clust(dd); dosflist[fd]._offset = dd2offset(dd); if (fd >= maxdosf) maxdosf = fd + 1; if ((flags & O_ACCMODE) != O_RDONLY && (flags & O_APPEND)) doslseek(fd + DOSFDOFFSET, (off_t)0, L_XTND); return(fd + DOSFDOFFSET); } int dosclose(fd) int fd; { int ret; fd -= DOSFDOFFSET; if (fd < 0 || fd >= maxdosf || !dosflist[fd]._base) { errno = EBADF; return(-1); } free(dosflist[fd]._base); dosflist[fd]._base = NULL; while (maxdosf > 0 && !dosflist[maxdosf - 1]._base) maxdosf--; ret = 0; if ((dosflist[fd]._flag & O_ACCMODE) != O_RDONLY) { dosflist[fd]._dent.size[0] = dosflist[fd]._size & 0xff; dosflist[fd]._dent.size[1] = (dosflist[fd]._size >> 8) & 0xff; dosflist[fd]._dent.size[2] = (dosflist[fd]._size >> 16) & 0xff; dosflist[fd]._dent.size[3] = (dosflist[fd]._size >> 24) & 0xff; if (!(dosflist[fd]._dent.attr & DS_IFDIR)) putdostime(dosflist[fd]._dent.time, -1); memcpy((char *)fd2dentp(fd), (char *)&(dosflist[fd]._dent), sizeof(dent_t)); fd2clust(fd) = dosflist[fd]._clust; fd2offset(fd) = dosflist[fd]._offset; if (writedent(dosflist[fd]._file) < 0 || writefat(fd2devp(fd)) < 0) { errno = doserrno; ret = -1; } } closedev(dosflist[fd]._file); return(ret); } static long NEAR dosfilbuf(fd, wrt) int fd, wrt; { long size, new, prev; size = dosflist[fd]._bufsize; if (!wrt && (off_t)size > dosflist[fd]._size - dosflist[fd]._loc) size = dosflist[fd]._size - dosflist[fd]._loc; prev = dosflist[fd]._off; if ((dosflist[fd]._off = dosflist[fd]._next)) dosflist[fd]._next = clustread(fd2devp(fd), (u_char *)(dosflist[fd]._base), dosflist[fd]._next); else { doserrno = 0; dosflist[fd]._next = -1L; } if (dosflist[fd]._next < 0L) { if (doserrno) return(-1L); if (!wrt) return(0L); if ((new = clustexpand(fd2devp(fd), prev, 0)) < 0L) return(-1L); if (!dosflist[fd]._off) { dosflist[fd]._dent.clust[0] = new & 0xff; dosflist[fd]._dent.clust[1] = (new >> 8) & 0xff; if (fd2devp(fd) -> flags & F_FAT32) { dosflist[fd]._dent.clust_h[0] = (new >> 16) & 0xff; dosflist[fd]._dent.clust_h[1] = (new >> 24) & 0xff; } } dosflist[fd]._off = new; dosflist[fd]._next = ENDCLUST; memset(dosflist[fd]._base, 0, dosflist[fd]._bufsize); } dosflist[fd]._cnt = size; dosflist[fd]._ptr = dosflist[fd]._base; return(size); } static long NEAR dosflsbuf(fd) int fd; { u_long sect; long ret; if (!(sect = clust2sect(fd2devp(fd), dosflist[fd]._off))) { doserrno = EIO; return(-1L); } ret = sectwrite(fd2devp(fd), sect, (u_char *)(dosflist[fd]._base), fd2devp(fd) -> clustsize); if (ret < 0L) return(-1L); return(dosflist[fd]._bufsize); } int dosread(fd, buf, nbytes) int fd; char *buf; int nbytes; { long size, total; int wrt; fd -= DOSFDOFFSET; if (fd < 0 || fd >= maxdosf || (buf && (dosflist[fd]._flag & O_ACCMODE) == O_WRONLY)) { errno = EBADF; return(-1); } wrt = ((dosflist[fd]._flag & O_ACCMODE) != O_RDONLY) ? 1 : 0; total = 0; while (nbytes > 0 && dosflist[fd]._loc < dosflist[fd]._size) { if (dosflist[fd]._cnt <= 0L && dosfilbuf(fd, wrt) < 0L) reterr(-1); if (!(size = dosflist[fd]._cnt)) return(total); if (size > nbytes) size = nbytes; memcpy(buf, dosflist[fd]._ptr, size); buf += size; dosflist[fd]._ptr += size; dosflist[fd]._cnt -= size; dosflist[fd]._loc += size; nbytes -= size; total += size; } return(total); } int doswrite(fd, buf, nbytes) int fd; CONST char *buf; int nbytes; { long size, total; fd -= DOSFDOFFSET; if (fd < 0 || fd >= maxdosf || (dosflist[fd]._flag & O_ACCMODE) == O_RDONLY) { errno = EBADF; return(-1); } total = 0; while (nbytes > 0) { if (dosflist[fd]._cnt <= 0L && dosfilbuf(fd, 1) < 0L) { #if MSDOS if (doserrno == ENOSPC) return(total); #endif reterr(-1); } size = dosflist[fd]._cnt; if (size > nbytes) size = nbytes; memcpy(dosflist[fd]._ptr, buf, size); buf += size; dosflist[fd]._ptr += size; if ((dosflist[fd]._cnt -= size) < 0L) dosflist[fd]._cnt = 0L; if ((dosflist[fd]._loc += size) > dosflist[fd]._size) dosflist[fd]._size = dosflist[fd]._loc; nbytes -= size; total += size; if (dosflsbuf(fd) < 0L) reterr(-1); } return(total); } off_t doslseek(fd, offset, whence) int fd; off_t offset; int whence; { long size; int wrt; fd -= DOSFDOFFSET; if (fd < 0 || fd >= maxdosf) { errno = EBADF; return(-1); } wrt = ((dosflist[fd]._flag & O_ACCMODE) != O_RDONLY) ? 1 : 0; switch (whence) { case L_SET: break; case L_INCR: offset += dosflist[fd]._loc; break; case L_XTND: offset += dosflist[fd]._size; break; default: errno = EINVAL; return(-1); /*NOTREACHED*/ break; } if (offset >= dosflist[fd]._loc) offset -= dosflist[fd]._loc; else { dosflist[fd]._cnt = 0L; dosflist[fd]._ptr = dosflist[fd]._base; dosflist[fd]._loc = (off_t)0; dosflist[fd]._off = 0L; dosflist[fd]._next = dosflist[fd]._top; } while (offset > (off_t)0) { if (!wrt && dosflist[fd]._loc >= dosflist[fd]._size) break; if (dosflist[fd]._cnt <= 0L && dosfilbuf(fd, wrt) < 0L) reterr(-1); if (!(size = dosflist[fd]._cnt)) break; if (size > offset) size = offset; dosflist[fd]._ptr += size; dosflist[fd]._cnt -= size; dosflist[fd]._loc += size; if (dosflist[fd]._size < dosflist[fd]._loc) dosflist[fd]._size = dosflist[fd]._loc; offset -= size; } return(dosflist[fd]._loc); } int dosftruncate(fd, size) int fd; off_t size; { off_t offset; int n; fd -= DOSFDOFFSET; if (fd < 0 || fd >= maxdosf) { errno = EBADF; return(-1); } if ((dosflist[fd]._flag & O_ACCMODE) == O_RDONLY) { errno = EINVAL; return(-1); } n = 0; offset = dosflist[fd]._loc; if (doslseek(fd + DOSFDOFFSET, size, L_SET) < (off_t)0) n = -1; else if (dosflist[fd]._next != ENDCLUST) { clustfree(fd2devp(fd), dosflist[fd]._next); dosflist[fd]._next = ENDCLUST; } dosflist[fd]._size = size; doslseek(fd + DOSFDOFFSET, offset, L_SET); return(n); } int dosmkdir(path, mode) CONST char *path; int mode; { dent_t dent[2]; long clust; int fd, tmp; fd = dosopen(path, O_BINARY | O_RDWR | O_CREAT | O_EXCL, mode & 0777); if (fd < 0) return(-1); fd -= DOSFDOFFSET; dosflist[fd]._dent.attr |= DS_IFDIR; dosflist[fd]._dent.attr &= ~DS_IARCHIVE; memcpy((char *)&(dent[0]), (char *)&(dosflist[fd]._dent), sizeof(dent_t)); memset(dent[0].name, ' ', 8 + 3); dent[0].name[0] = '.'; if ((clust = newclust(fd2devp(fd))) < 0L) { errno = doserrno; dosflist[fd]._dent.name[0] = 0xe5; *fd2path(fd) = '\0'; dosclose(fd + DOSFDOFFSET); return(-1); } dent[0].clust[0] = clust & 0xff; dent[0].clust[1] = (clust >> 8) & 0xff; if (fd2devp(fd) -> flags & F_FAT32) { dent[0].clust_h[0] = (clust >> 16) & 0xff; dent[0].clust_h[1] = (clust >> 24) & 0xff; } memcpy((char *)&(dent[1]), (char *)&(dosflist[fd]._dent), sizeof(dent_t)); memset(dent[1].name, ' ', 8 + 3); dent[1].name[0] = dent[1].name[1] = '.'; clust = fd2clust(fd); dent[1].clust[0] = clust & 0xff; dent[1].clust[1] = (clust >> 8) & 0xff; if (fd2devp(fd) -> flags & F_FAT32) { dent[1].clust_h[0] = (clust >> 16) & 0xff; dent[1].clust_h[1] = (clust >> 24) & 0xff; } if (doswrite(fd + DOSFDOFFSET, (char *)dent, 2 * sizeof(dent_t)) < 0) { tmp = errno; if ((clust = clust32(fd2devp(fd), &(dosflist[fd]._dent)))) clustfree(fd2devp(fd), clust); dosflist[fd]._dent.name[0] = 0xe5; *fd2path(fd) = '\0'; dosclose(fd + DOSFDOFFSET); errno = tmp; return(-1); } dosflist[fd]._size = (off_t)0; dosclose(fd + DOSFDOFFSET); return(0); } int dosrmdir(path) CONST char *path; { dosDIR *xdirp; struct dosdirent *dp; cache_t cache; long clust, offset; int sum, ret; if (!(xdirp = _dosopendir(path, NULL, 0))) reterr(-1); memcpy((char *)&cache, (char *)(devlist[xdirp -> dd_fd].dircache), sizeof(cache_t)); clust = lfn_clust; offset = lfn_offset; while ((dp = _dosreaddir(xdirp, 0))) if (!isdotdir(dp -> d_name)) { _dosclosedir(xdirp); errno = ENOTEMPTY; return(-1); } ret = 0; if (doserrno) { errno = doserrno; ret = -1; } else { memcpy((char *)(devlist[xdirp -> dd_fd].dircache), (char *)&cache, sizeof(cache_t)); sum = calcsum(dd2dentp(xdirp -> dd_fd) -> name); *(dd2dentp(xdirp -> dd_fd) -> name) = 0xe5; *dd2path(xdirp -> dd_fd) = '\0'; if (writedent(xdirp -> dd_fd) < 0 || clustfree(&(devlist[xdirp -> dd_fd]), clust32(&(devlist[xdirp -> dd_fd]), dd2dentp(xdirp -> dd_fd))) < 0 || unlinklfn(xdirp -> dd_fd, clust, offset, sum) < 0 || writefat(&(devlist[xdirp -> dd_fd])) < 0) { errno = doserrno; ret = -1; } } _dosclosedir(xdirp); return(ret); } int dosfileno(stream) FILE *stream; { int fd; for (fd = 0; fd < maxdosf; fd++) { if (!dosflist[fd]._base) continue; if (stream == (FILE *)&(dosflist[fd])) return(fd); } return(-1); } static int NEAR type2flags(type) CONST char *type; { int flags; switch (*type) { case 'r': if (*(type + 1) != '+') flags = O_RDONLY; else flags = O_RDWR; break; case 'w': if (*(type + 1) != '+') flags = O_WRONLY; else flags = O_RDWR; flags |= O_CREAT | O_TRUNC; break; case 'a': if (*(type + 1) != '+') flags = O_WRONLY; else flags = O_RDWR; flags |= O_APPEND | O_CREAT; break; default: flags = 0; break; } return(flags); } FILE *dosfopen(path, type) CONST char *path, *type; { int fd; if (!type) { errno = 0; return(NULL); } if ((fd = dosopen(path, type2flags(type), 0666)) < 0) return(NULL); return((FILE *)&(dosflist[fd - DOSFDOFFSET])); } FILE *dosfdopen(fd, type) int fd; CONST char *type; { int flags; fd -= DOSFDOFFSET; if (fd < 0 || fd >= maxdosf || !dosflist[fd]._base) { errno = EBADF; return(NULL); } flags = type2flags(type); if ((dosflist[fd]._flag & O_ACCMODE) != O_RDWR && (flags & O_ACCMODE) != (dosflist[fd]._flag & O_ACCMODE)) { errno = EINVAL; return(NULL); } if ((flags & O_ACCMODE) != O_RDONLY && (flags & O_APPEND)) doslseek(fd + DOSFDOFFSET, (off_t)0, L_XTND); return((FILE *)&(dosflist[fd])); } int dosfclose(stream) FILE *stream; { int fd; if ((fd = dosfileno(stream)) < 0) { errno = 0; return(EOF); } return((dosclose(fd + DOSFDOFFSET) < 0) ? EOF : 0); } int dosfread(buf, size, nitems, stream) char *buf; int size, nitems; FILE *stream; { long rest; int n, fd, ret; if ((fd = dosfileno(stream)) < 0) { errno = EINVAL; return(0); } if ((dosflist[fd]._flag & O_ACCMODE) == O_WRONLY) { errno = EBADF; dosflist[fd]._flag |= O_IOERR; return(0); } if (!size || !nitems) return(0); rest = dosflist[fd]._bufsize - (dosflist[fd]._ptr - dosflist[fd]._base); if (rest < dosflist[fd]._cnt) { if (dosflsbuf(fd) < 0L) { dosflist[fd]._flag |= O_IOERR; reterr(0); } dosflist[fd]._cnt = rest; } for (n = 0; n < nitems; n++) { if ((ret = dosread(fd + DOSFDOFFSET, buf, size)) < 0) { dosflist[fd]._flag |= O_IOERR; return(0); } if (ret < size) { dosflist[fd]._flag |= O_IOEOF; break; } } return(n); } int dosfwrite(buf, size, nitems, stream) CONST char *buf; int size, nitems; FILE *stream; { long n, nbytes, total, rest; int fd; if ((fd = dosfileno(stream)) < 0) { errno = EINVAL; return(0); } if ((dosflist[fd]._flag & O_ACCMODE) == O_RDONLY) { errno = EBADF; dosflist[fd]._flag |= O_IOERR; return(0); } if (!size || !nitems) return(0); total = 0; nbytes = (long)size * (long)nitems; rest = dosflist[fd]._bufsize - (dosflist[fd]._ptr - dosflist[fd]._base); while (nbytes >= rest) { for (n = 0; n < rest; n++) dosflist[fd]._ptr[n] = *(buf++); dosflist[fd]._cnt = 0L; dosflist[fd]._ptr = dosflist[fd]._base; if ((dosflist[fd]._loc += size) > dosflist[fd]._size) dosflist[fd]._size = dosflist[fd]._loc; nbytes -= rest; total += rest; if (dosflsbuf(fd) < 0L) { dosflist[fd]._flag |= O_IOERR; reterr(0); } rest = dosflist[fd]._bufsize; } if (nbytes > 0) { if (rest >= dosflist[fd]._bufsize && dosfilbuf(fd, 1) < 0L) { dosflist[fd]._flag |= O_IOERR; reterr(0); } for (n = 0; n < nbytes; n++) dosflist[fd]._ptr[n] = *(buf++); dosflist[fd]._ptr += nbytes; total += nbytes; } if (!total) errno = 0; return(nitems); } int dosfflush(stream) FILE *stream; { long rest; int fd; if ((fd = dosfileno(stream)) < 0) { errno = EINVAL; return(EOF); } rest = dosflist[fd]._bufsize - (dosflist[fd]._ptr - dosflist[fd]._base); if (rest != dosflist[fd]._cnt) { if (dosflsbuf(fd) < 0L) { dosflist[fd]._flag |= O_IOERR; reterr(EOF); } dosflist[fd]._cnt = rest; } if (flushcache(&(devlist[dosflist[fd]._file])) < 0) reterr(EOF); return(0); } int dosfgetc(stream) FILE *stream; { u_char ch; if (dosfread((char *)&ch, sizeof(u_char), 1, stream)) return((int)ch); return(EOF); } int dosfputc(c, stream) int c; FILE *stream; { u_char ch; ch = (u_char)c; if (dosfwrite((char *)&ch, sizeof(u_char), 1, stream)) return((int)ch); return(EOF); } char *dosfgets(s, n, stream) char *s; int n; FILE *stream; { int i, c; for (i = 0; i < n - 1; i++) { if ((c = dosfgetc(stream)) == EOF) return(NULL); if (c == '\r') continue; s[i] = c; if (s[i] == '\n') { i++; break; } } s[i] = '\0'; return(s); } int dosfputs(s, stream) CONST char *s; FILE *stream; { int i; for (i = 0; s[i]; i++) { if (s[i] == '\n' && dosfputc('\r', stream) == EOF) return(EOF); if (dosfputc(s[i], stream) == EOF) return(EOF); } return(0); } int dosallclose(VOID_A) { int i, ret; ret = 0; for (i = maxdosf - 1; i >= 0; i--) if (dosflist[i]._base && dosclose(i + DOSFDOFFSET) < 0) ret = -1; for (i = maxdev - 1; i >= 0; i--) if (!(devlist[i].drive)) continue; devlist[i].nlink = 0; if (closedev(i) < 0) { errno = doserrno; ret = -1; } return(ret); } #endif /* !_NODOSDRIVE */