/* * Read the next block from the tape. * Check to see if it is one of several vintage headers. * If it is an old style header, convert it to a new style header. * If it is not any valid header, return an error. */ static int gethead(struct s_spcl *buf) { union u_ospcl u_ospcl; if (!cvtflag) { readtape((char *)buf); if (buf->c_magic != NFS_MAGIC && buf->c_magic != FS_UFS2_MAGIC) { if (swap32(buf->c_magic) != NFS_MAGIC && swap32(buf->c_magic) != FS_UFS2_MAGIC) return (FAIL); if (!Bcvt) { Vprintf(stdout, "Note: Doing Byte swapping\n"); Bcvt = 1; } } if (checksum((int *)buf) == FAIL) return (FAIL); if (Bcvt) swap_header(buf); goto good; } readtape((char *)(&u_ospcl.s_ospcl)); if (checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) return (FAIL); if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC) { if (swap32(u_ospcl.s_ospcl.c_magic) != OFS_MAGIC) return (FAIL); if (!Bcvt) { fprintf(stdout, "Note: Doing Byte swapping\n"); Bcvt = 1; } swap_old_header(&u_ospcl.s_ospcl); } memset(buf, 0, TP_BSIZE); buf->c_type = u_ospcl.s_ospcl.c_type; buf->c_date = u_ospcl.s_ospcl.c_date; buf->c_ddate = u_ospcl.s_ospcl.c_ddate; buf->c_volume = u_ospcl.s_ospcl.c_volume; buf->c_tapea = u_ospcl.s_ospcl.c_tapea; buf->c_inumber = u_ospcl.s_ospcl.c_inumber; buf->c_checksum = u_ospcl.s_ospcl.c_checksum; buf->c_mode = u_ospcl.s_ospcl.c_odinode.odi_mode; buf->c_uid = u_ospcl.s_ospcl.c_odinode.odi_uid; buf->c_gid = u_ospcl.s_ospcl.c_odinode.odi_gid; buf->c_size = u_ospcl.s_ospcl.c_odinode.odi_size; buf->c_rdev = u_ospcl.s_ospcl.c_odinode.odi_rdev; buf->c_atime = u_ospcl.s_ospcl.c_odinode.odi_atime; buf->c_mtime = u_ospcl.s_ospcl.c_odinode.odi_mtime; buf->c_count = u_ospcl.s_ospcl.c_count; memcpy(buf->c_addr, u_ospcl.s_ospcl.c_addr, 256); buf->c_magic = FS_UFS2_MAGIC; good: switch (buf->c_type) { case TS_CLRI: case TS_BITS: /* * Have to patch up missing information in bit map headers */ buf->c_inumber = 0; buf->c_size = buf->c_count * TP_BSIZE; break; case TS_TAPE: if ((buf->c_flags & DR_NEWINODEFMT) == 0) oldinofmt = 1; /* fall through */ case TS_END: buf->c_inumber = 0; break; case TS_INODE: if (buf->c_magic == NFS_MAGIC) { buf->c_tapea = buf->c_old_tapea; buf->c_firstrec = buf->c_old_firstrec; buf->c_date = buf->c_old_date; buf->c_ddate = buf->c_old_ddate; buf->c_atime = buf->c_old_atime; buf->c_mtime = buf->c_old_mtime; buf->c_birthtime = 0; buf->c_birthtimensec = 0; buf->c_atimensec = buf->c_mtimensec = 0; } case TS_ADDR: break; default: panic("gethead: unknown inode type %d\n", buf->c_type); break; } buf->c_magic = FS_UFS2_MAGIC; /* * If we are restoring a filesystem with old format inodes, * copy the uid/gid to the new location. */ if (oldinofmt) { buf->c_uid = buf->c_spare1[1]; buf->c_gid = buf->c_spare1[2]; } if (dflag) accthdr(buf); return(GOOD); }
/* * Read the next block from the tape. * If it is not any valid header, return an error. */ static int gethead(struct s_spcl *buf) { long i; readtape((char *)buf); if (buf->c_magic != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) { if (buf->c_magic == OFS_MAGIC) { fprintf(stderr, "Format of dump tape is too old. Must use\n"); fprintf(stderr, "a version of restore from before 2002.\n"); return (FAIL); } if (swabl(buf->c_magic) != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) { if (buf->c_magic == OFS_MAGIC) { fprintf(stderr, "Format of dump tape is too old. Must use\n"); fprintf(stderr, "a version of restore from before 2002.\n"); } return (FAIL); } if (!Bcvt) { vprintf(stdout, "Note: Doing Byte swapping\n"); Bcvt = 1; } } if (checksum((int *)buf) == FAIL) return (FAIL); if (Bcvt) { swabst((u_char *)"8l4s1q8l2q17l", (u_char *)buf); swabst((u_char *)"l",(u_char *) &buf->c_level); swabst((u_char *)"2l4q",(u_char *) &buf->c_flags); } readmapflag = 0; switch (buf->c_type) { case TS_CLRI: case TS_BITS: /* * Have to patch up missing information in bit map headers */ buf->c_size = buf->c_count * TP_BSIZE; if (buf->c_count > TP_NINDIR) readmapflag = 1; else for (i = 0; i < buf->c_count; i++) buf->c_addr[i]++; /* FALL THROUGH */ case TS_TAPE: if (buf->c_magic == NFS_MAGIC && (buf->c_flags & NFS_DR_NEWINODEFMT) == 0) oldinofmt = 1; /* FALL THROUGH */ case TS_END: buf->c_inumber = 0; /* FALL THROUGH */ case TS_ADDR: case TS_INODE: /* * For old dump tapes, have to copy up old fields to * new locations. */ if (buf->c_magic == NFS_MAGIC) { buf->c_tapea = buf->c_old_tapea; buf->c_firstrec = buf->c_old_firstrec; buf->c_date = _time32_to_time(buf->c_old_date); buf->c_ddate = _time32_to_time(buf->c_old_ddate); buf->c_atime = _time32_to_time(buf->c_old_atime); buf->c_mtime = _time32_to_time(buf->c_old_mtime); buf->c_birthtime = 0; buf->c_birthtimensec = 0; buf->c_extsize = 0; } break; default: panic("gethead: unknown inode type %d\n", buf->c_type); break; } if (dumpdate != 0 && _time64_to_time(buf->c_date) != dumpdate) fprintf(stderr, "Header with wrong dumpdate.\n"); /* * If we're restoring a filesystem with the old (FreeBSD 1) * format inodes, copy the uid/gid to the new location */ if (oldinofmt) { buf->c_uid = buf->c_spare1[1]; buf->c_gid = buf->c_spare1[2]; } buf->c_magic = FS_UFS2_MAGIC; tapeaddr = buf->c_tapea; if (dflag) accthdr(buf); return(GOOD); }
/* * Read the next block from the tape. * Check to see if it is one of several vintage headers. * If it is an old style header, convert it to a new style header. * If it is not any valid header, return an error. */ static int gethead(struct s_spcl *buf) { long i; union { quad_t qval; int32_t val[2]; } qcvt; union u_ospcl { char dummy[TP_BSIZE]; struct s_ospcl { int32_t c_type; int32_t c_date; int32_t c_ddate; int32_t c_volume; int32_t c_tapea; u_short c_inumber; int32_t c_magic; int32_t c_checksum; struct odinode { unsigned short odi_mode; u_short odi_nlink; u_short odi_uid; u_short odi_gid; int32_t odi_size; int32_t odi_rdev; char odi_addr[36]; int32_t odi_atime; int32_t odi_mtime; int32_t odi_ctime; } c_dinode; int32_t c_count; char c_addr[256]; } s_ospcl; } u_ospcl; if (!cvtflag) { readtape((char *)buf); if (buf->c_magic != NFS_MAGIC) { if (swabl(buf->c_magic) != NFS_MAGIC) return (FAIL); if (!Bcvt) { vprintf(stdout, "Note: Doing Byte swapping\n"); Bcvt = 1; } } if (checksum((int *)buf) == FAIL) return (FAIL); if (Bcvt) { swabst((u_char *)"8l4s31l", (u_char *)buf); swabst((u_char *)"l",(u_char *) &buf->c_level); swabst((u_char *)"2l",(u_char *) &buf->c_flags); } goto good; } readtape((char *)(&u_ospcl.s_ospcl)); memset(buf, 0, (long)TP_BSIZE); buf->c_type = u_ospcl.s_ospcl.c_type; buf->c_date = u_ospcl.s_ospcl.c_date; buf->c_ddate = u_ospcl.s_ospcl.c_ddate; buf->c_volume = u_ospcl.s_ospcl.c_volume; buf->c_tapea = u_ospcl.s_ospcl.c_tapea; buf->c_inumber = u_ospcl.s_ospcl.c_inumber; buf->c_checksum = u_ospcl.s_ospcl.c_checksum; buf->c_magic = u_ospcl.s_ospcl.c_magic; buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode; buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink; buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid; buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid; buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size; buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev; buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime; buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime; buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime; buf->c_count = u_ospcl.s_ospcl.c_count; memmove(buf->c_addr, u_ospcl.s_ospcl.c_addr, (long)256); if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC || checksum((int *)(&u_ospcl.s_ospcl)) == FAIL) return(FAIL); buf->c_magic = NFS_MAGIC; good: if ((buf->c_dinode.di_size == 0 || buf->c_dinode.di_size > 0xfffffff) && (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt == 0) { qcvt.qval = buf->c_dinode.di_size; if (qcvt.val[0] || qcvt.val[1]) { printf("Note: Doing Quad swapping\n"); Qcvt = 1; } } if (Qcvt) { qcvt.qval = buf->c_dinode.di_size; i = qcvt.val[1]; qcvt.val[1] = qcvt.val[0]; qcvt.val[0] = i; buf->c_dinode.di_size = qcvt.qval; } readmapflag = 0; switch (buf->c_type) { case TS_CLRI: case TS_BITS: /* * Have to patch up missing information in bit map headers */ buf->c_inumber = 0; buf->c_dinode.di_size = buf->c_count * TP_BSIZE; if (buf->c_count > TP_NINDIR) readmapflag = 1; else for (i = 0; i < buf->c_count; i++) buf->c_addr[i]++; break; case TS_TAPE: if ((buf->c_flags & DR_NEWINODEFMT) == 0) oldinofmt = 1; /* fall through */ case TS_END: buf->c_inumber = 0; break; case TS_INODE: case TS_ADDR: break; default: panic("gethead: unknown inode type %d\n", buf->c_type); break; } /* * If we are restoring a filesystem with old format inodes, * copy the uid/gid to the new location. */ if (oldinofmt) { buf->c_dinode.di_uid = buf->c_dinode.di_ouid; buf->c_dinode.di_gid = buf->c_dinode.di_ogid; } tapeaddr = buf->c_tapea; if (dflag) accthdr(buf); return(GOOD); }