{"id":1762,"date":"2007-08-12T22:34:08","date_gmt":"2007-08-12T13:34:08","guid":{"rendered":"http:\/\/yasu2.prosou.nu\/blog\/index.php\/2007\/08\/12\/freebsd_linux_rmt\/"},"modified":"2007-08-12T22:34:08","modified_gmt":"2007-08-12T13:34:08","slug":"freebsd_linux_rmt","status":"publish","type":"post","link":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/2007\/08\/12\/1762\/","title":{"rendered":"FreeBSD \u3068 Linux \u306e rmt"},"content":{"rendered":"

\u7814\u7a76\u5ba4\u306e\u30d5\u30a1\u30a4\u30eb\u30b5\u30fc\u30d0\u306f\u5e7e\u3064\u304b\u3042\u308b\u304c\u3001\u30e1\u30b8\u30e3\u30fc\u306a\u5974\u306f (\u6b8b\u5ff5\u306a\u3053\u3068\u306b) Linux \u3067\u3001xfs \u3092\u4f7f\u3063\u3066\u3044\u308b\u3002\u3067\u3001\u30c6\u30fc\u30d7\u30c9\u30e9\u30a4\u30d6\u306e\u3064\u306a\u304c\u3063\u3066\u3044\u308b\u30db\u30b9\u30c8\u306f FreeBSD \u306a\u306e\u3060\u304c\u3001\u3053\u3044\u3064\u306b xfsdump \u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001
\nrmtopen: remote host type, “FreeBSD”, is unknown to librmt.
\n\u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u51fa\u3066\u3001dump \u306f\u59cb\u307e\u308b\u3082\u306e\u306e\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306a\u3069\u306f\u7121\u8996\u3055\u308c\u3066\u3001\u30c6\u30fc\u30d7\u306e\u7d42\u308f\u308a\u307e\u3067\u306b dump \u304c\u7d42\u4e86\u3057\u306a\u3051\u308c\u3070\u305d\u306e\u307e\u307e abort \u3001\u3068\u3044\u3046\u7d50\u672b\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3002\u3067\u3001\u6614 Solaris \u3068 FreeBSD \u3068 Linux \u3092\u3054\u3063\u3061\u3083\u306b\u3057\u3066\u4f7f\u3063\u3066\u3044\u305f\u9803\u306f\u3001\u305d\u3093\u306a\u306e\u6c17\u306b\u3057\u305f\u3053\u3068\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u306a\u3093\u3067\u3060\u308d\u3046\u306a\u30fc\u3001\u3068\u8abf\u3079\u3066\u3044\u308b\u3068\u3001librmt \u3068\u3044\u3046\u306e\u306f\u3069\u3046\u3084\u3089\u3001xfsdump \u306e\u30bd\u30fc\u30b9\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3089\u3057\u3044\u3002\u305d\u308c\u306b\u3001Linux \u306e rmt \u306f\u3069\u3046\u3084\u3089 BSD \u7531\u6765\u306e\u3082\u306e\u3067\u3042\u308a\u3001rmt \u304c\u7406\u89e3\u3059\u308b\u30b3\u30de\u30f3\u30c9\u306f Linux \u3067\u3082 FreeBSD \u3067\u3082\u5168\u304f\u540c\u3058\u3088\u3046\u3060\u3002rmt \u306e\u30b3\u30de\u30f3\u30c9\u306b\u306f\u3001uname \u3092\u8fd4\u3059\u3088\u3046\u306a\u3082\u306e\u306f\u306a\u3044\u306e\u3067\u3001
\n\u3068\u3044\u3046\u3053\u3068\u3067\u3001xfsdump \u306e\u30bd\u30fc\u30b9\u53d6\u3063\u3066\u304d\u3066\u773a\u3081\u3066\u307f\u305f\u3002librmt\/rmtopen.c \u304c\u602a\u3057\u3044\u3002
\n\u307e\u305a\u3001uname \u306f rsh \u7d4c\u7531\u3067\u547c\u3070\u308c\u3066\u3044\u308b\u3088\u3046\u3060\u3002<\/p>\n

\n170 snprintf(cmd, sizeof(cmd), “%s %s uname”, rsh_path, system);
\n173 rmt_f = popen(cmd, “r”);
\n183 char *c = fgets(uname, sizeof(uname), rmt_f);\n<\/div>\n

\u691c\u7d22\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u30c6\u30fc\u30d6\u30eb\u306f\u305f\u3076\u3093\u3053\u308c\u3002<\/p>\n

\n50 struct uname_table uname_table[] =
\n51 { {UNAME_LINUX, “Linux”}, {UNAME_IRIX, “IRIX”}, {0,0} };\n<\/div>\n

\u3067\u3001\u3053\u3053\u307e\u3067\u306f\u7c21\u5358\u305d\u3046\u306a\u306e\u3060\u304c\u3001rmt \u304c I \u3068\u304b S \u3067\u6271\u3046\u69cb\u9020\u4f53\u306b\u306f\u4e92\u63db\u6027\u304c\u306a\u3055\u305d\u3046\u3060\u3002rmtioctl.c \u3092\u898b\u308b\u9650\u308a\u3001I (MTIOCOP) \u306f\u4f7f\u3063\u3066\u3044\u306a\u305d\u3046\u3060\u304c\u3001S (MTIOCGET) \u306e\u307b\u3046\u306f\u4f7f\u3046\u6a21\u69d8\u3002\u3053\u308c\u306f\u3001mtget \u69cb\u9020\u4f53\u3092\u305d\u306e\u307e\u307e\u8fd4\u3059\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3046\u3002
\nrmtioctl.c \u306b\u306f\u3001<\/p>\n

\n47 struct linux32_mtget
\n48 {
\n49 int32_t mt_type; \/* Type of magtape device. *\/
\n50 int32_t mt_resid; \/* Residual count: *\/
\n51 \/* The following registers are device dependent. *\/
\n52 int32_t mt_dsreg; \/* Status register. *\/
\n53 int32_t mt_gstat; \/* Generic (device independent) status. *\/
\n54 int32_t mt_erreg; \/* Error register. *\/
\n55 \/* The next two fields are not always used. *\/
\n56 int32_t mt_fileno; \/* Number of current file on tape. *\/
\n57 int32_t mt_blkno; \/* Current block number. *\/
\n58 };\n<\/div>\n

\u3068\u3044\u3046\u306e\u304c\u3042\u308a\u3001\u4e00\u65b9 FreeBSD \u306e \/usr\/include\/sys\/mtio.h<\/p>\n

\n110 struct mtget {
\n111 short mt_type; \/* type of magtape device *\/
\n112 \/* the following two registers are grossly device dependent *\/
\n113 short mt_dsreg; \/* “drive status” register *\/
\n114 short mt_erreg; \/* “error” register *\/
\n115 \/* end device-dependent registers *\/
\n122 short mt_resid; \/* residual count *\/
\n123 #if defined (__FreeBSD__)
\n124 int32_t mt_blksiz; \/* presently operating blocksize *\/
\n125 int32_t mt_density; \/* presently operating density *\/
\n126 u_int32_t mt_comp; \/* presently operating compression *\/
\n127 int32_t mt_blksiz0; \/* blocksize for mode 0 *\/
\n128 int32_t mt_blksiz1; \/* blocksize for mode 1 *\/
\n129 int32_t mt_blksiz2; \/* blocksize for mode 2 *\/
\n130 int32_t mt_blksiz3; \/* blocksize for mode 3 *\/
\n131 int32_t mt_density0; \/* density for mode 0 *\/
\n132 int32_t mt_density1; \/* density for mode 1 *\/
\n133 int32_t mt_density2; \/* density for mode 2 *\/
\n134 int32_t mt_density3; \/* density for mode 3 *\/
\n135 \/* the following are not yet implemented *\/
\n136 u_int32_t mt_comp0; \/* compression type for mode 0 *\/
\n137 u_int32_t mt_comp1; \/* compression type for mode 1 *\/
\n138 u_int32_t mt_comp2; \/* compression type for mode 2 *\/
\n139 u_int32_t mt_comp3; \/* compression type for mode 3 *\/
\n140 \/* end not yet implemented *\/
\n141 #endif
\n142 int32_t mt_fileno; \/* relative file number of current posit
\nion *\/
\n143 int32_t mt_blkno; \/* relative block number of current posi
\ntion *\/
\n144 };\n<\/div>\n

\u307f\u305f\u3044\u306a\u611f\u3058\u3067\u3001\u5727\u5012\u7684\u306b FreeBSD \u306e\u307b\u3046\u304c\u8a73\u3057\u3044\u60c5\u5831\u304c\u8fd4\u3063\u3066\u304f\u308b\u306e\u3067\u3042\u308a\u3001\u3053\u308a\u3083\u4e92\u63db\u6027\u306f\u306a\u3044\u306d\u3002\u3068\u3044\u3046\u308f\u3051\u3067\u3001\u5927\u5e45\u306b\u624b\u3092\u52a0\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u305d\u3046\u3060\u3002IRIX \u306e\u5834\u5408\u3001\u6700\u7d42\u7684\u306b\u306f<\/p>\n

\n364 if (RMTHOST(fildes) == UNAME_IRIX) {
\n365 struct mtget *dstp = (struct mtget *)arg;
\n366 struct irix_mtget *srcp = (struct irix_mtget *)irixget;
\n367 short status = srcp->mt_dsreg;
\n368
\n369 dstp->mt_type = srcp->mt_type;
\n370 dstp->mt_erreg = srcp->mt_erreg;
\n371 dstp->mt_resid = srcp->mt_resid;
\n372 dstp->mt_fileno = srcp->mt_fileno;
\n373 dstp->mt_blkno = srcp->mt_blkno;
\n374 dstp->mt_dsreg = srcp->mt_dsreg; \/* different semantics *\/
\n375
\n376 \/* need to do tape status conversions *\/
\n377 dstp->mt_gstat = 0;
\n378 if (status & IRIX_MT_EOT)
\n379 dstp->mt_gstat |= GMT_EOT(0xffffffff);
\n380 if (status & IRIX_MT_BOT)
\n381 dstp->mt_gstat |= GMT_BOT(0xffffffff);
\n382 if (status & IRIX_MT_WPROT)
\n383 dstp->mt_gstat |= GMT_WR_PROT(0xffffffff);
\n384 if (status & IRIX_MT_ONL)
\n385 dstp->mt_gstat |= GMT_ONLINE(0xffffffff);
\n386 if (status & IRIX_MT_EOD)
\n387 dstp->mt_gstat |= GMT_EOD(0xffffffff);
\n388 if (status & IRIX_MT_FMK)
\n389 dstp->mt_gstat |= GMT_EOF(0xffffffff);
\n390 if (status & IRIX_MT_EW)
\n391 ;\/* No GMT_ to map it to *\/
\n392 }\n<\/div>\n

\u307f\u305f\u3044\u306b\u3057\u3066\u300132bit Linux \u306a mtget \u306b\u53cd\u6620\u3055\u308c\u308b\u3057\u300132bit Linux \u306e\u5834\u5408\u306f\u3001<\/p>\n

\n393 else if (islinux32) {
\n394 struct mtget *dstp = (struct mtget *)arg;
\n395 struct linux32_mtget *srcp = (struct linux32_mtget *)linux32get;
\n396
\n397 dstp->mt_type = srcp->mt_type;
\n398 dstp->mt_erreg = srcp->mt_erreg;
\n399 dstp->mt_resid = srcp->mt_resid;
\n400 dstp->mt_fileno = srcp->mt_fileno;
\n401 dstp->mt_blkno = srcp->mt_blkno;
\n402 dstp->mt_dsreg = srcp->mt_dsreg;
\n403 dstp->mt_gstat = srcp->mt_gstat;
\n404 }\n<\/div>\n

\u3068\u3059\u308b\u3060\u3051\u3060\u3002\u3053\u3093\u306a\u611f\u3058\u306e\u3092\u66f8\u3044\u3066\u3084\u308c\u3070\u826f\u3055\u305d\u3046 (\u307b\u3093\u3068\u306f\u3053\u306e\u624b\u524d\u3067\u3001\u5fc5\u8981\u306a\u5834\u5408\u306b\u306f\u30d0\u30a4\u30c8\u30aa\u30fc\u30c0\u306e\u5909\u63db\u3092\u884c\u3063\u3066\u3044\u308b\u306e\u3060\u3051\u308c\u3069\u3001\u50d5\u304c\u4f7f\u3046\u306e\u306f\u4eca\u306e\u3068\u3053\u308d\u305c\u3093\u3076 x86 \u3060\u304b\u3089\u624b\u629c\u304d\u3092\u3059\u308b\u3053\u3068\u306b\u3059\u308b\u3002Solaris \u306a\u30d5\u30a1\u30a4\u30eb\u30b5\u30fc\u30d0\u304c\u3042\u308b\u3068\u3044\u3046\u7406\u60f3\u7684\u306a\u74b0\u5883\u3067\u306f\u3001\u8a71\u304c\u5909\u308f\u308b\u308f\u3051\u3060\u304c…)\u3002
\nFreeBSD \u306e mtget \u304b\u3089 Linux \u306e mtget \u306b\u305d\u306e\u307e\u307e\u5024\u3092\u6e21\u3057\u3066\u826f\u3055\u305d\u3046\u306a\u306e\u306f\u3001
\n– mt_type (short \u2192 int32)
\n– mt_resid (short \u2192 int32: \u3067\u3082\u3053\u308c\u3063\u3066 32kB \u3060\u3068\u3059\u3050\u3042\u3075\u308c\u308b\u304b\u3089\u3001\u9055\u3046 IOCTL \u3092\u4f7f\u3046\u3079\u304d\u3089\u3057\u3044)
\n– mt_dsreg (short \u2192 int32)
\n– mt_erreg (short \u2192 int32)
\n– mt_fileno (int32 \u2192 int32)
\n– mt_blkno (int32 \u2192 int32)
\n\u3067\u3001\u5909\u63db\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044 (\u304b\u3082\u3057\u308c\u306a\u3044) \u306e\u306f\u3001
\n– mt_gstat ( ? \u2192 int32)
\n\u306a\u306e\u3060\u304c\u3001\u3053\u308c\u306f FreeBSD \u306e mtget \u306b\u306f\u3001\u8a72\u5f53\u3059\u308b\u5024\u304c\u306a\u3044\u6c17\u304c\u3059\u308b\u3002\u3053\u308c\u306f\u3064\u307e\u308a\u3001\u30c6\u30fc\u30d7\u306e\u7d42\u308f\u308a\u3068\u304b\u304c\u691c\u51fa\u3067\u304d\u306a\u3044\u306e\u3067\u3042\u308a\u3001\u4f55\u672c\u3082\u306e\u30c6\u30fc\u30d7\u306b\u307e\u305f\u304c\u3063\u3066 dump \u3059\u308b\u5834\u5408\u306b\u306f\u975e\u5e38\u306b\u554f\u984c\u306a\u3088\u3046\u306a\u6c17\u3082\u3059\u308b\u3002\u3057\u304b\u3057\u3001\u5b9f\u969b\u306e\u3068\u3053\u308d xfsdump \u306f\u3053\u306e\u5909\u6570\u3092\u4f7f\u3063\u3066\u3044\u306a\u3044\u3088\u3046\u306b\u898b\u3048\u308b\u306e\u3067\u3001\u3068\u308a\u3042\u3048\u305a 0 \u306b\u3057\u3068\u304d\u3083\u3044\u3044\u3093\u3067\u306f\u306a\u3044\u3060\u308d\u3046\u304b…?
\n(\u304d\u3063\u3068\u3001\u7d9a\u304f)<\/p>\n","protected":false},"excerpt":{"rendered":"

\u7814\u7a76\u5ba4\u306e\u30d5\u30a1\u30a4\u30eb\u30b5\u30fc\u30d0\u306f\u5e7e\u3064\u304b\u3042\u308b\u304c\u3001\u30e1\u30b8\u30e3\u30fc\u306a\u5974\u306f (\u6b8b\u5ff5\u306a\u3053\u3068\u306b) Linux \u3067\u3001xfs \u3092\u4f7f\u3063\u3066\u3044\u308b\u3002\u3067\u3001\u30c6\u30fc\u30d7\u30c9\u30e9\u30a4\u30d6\u306e\u3064\u306a\u304c\u3063\u3066\u3044\u308b\u30db\u30b9\u30c8\u306f FreeBSD \u306a\u306e\u3060\u304c\u3001\u3053\u3044\u3064\u306b xfsdump \u3057\u3088\u3046\u3068\u3059\u308b\u3068 … “FreeBSD \u3068 Linux \u306e rmt” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":""},"categories":[6],"tags":[],"class_list":["post-1762","post","type-post","status-publish","format-standard","hentry","category-unix-"],"_links":{"self":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/1762","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=1762"}],"version-history":[{"count":0,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/1762\/revisions"}],"wp:attachment":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=1762"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=1762"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=1762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}