{"id":7858,"date":"2023-01-12T06:06:08","date_gmt":"2023-01-11T21:06:08","guid":{"rendered":"https:\/\/lab4ict.com\/system\/?p=7858"},"modified":"2023-09-14T12:29:47","modified_gmt":"2023-09-14T03:29:47","slug":"%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%81%8c%e5%ae%9f%e8%a1%8c%e3%81%99%e3%82%8b%e3%82%b7%e3%82%b9%e3%83%86%e3%83%a0%e3%82%b3%e3%83%bc%e3%83%ab%e3%82%92%e8%a1%a8%e7%a4%ba%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/lab4ict.com\/system\/archives\/7858","title":{"rendered":"Linux\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u5b9f\u884c\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u3092\u8868\u793a\u3059\u308b\uff01\uff08strace\uff09"},"content":{"rendered":"

\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u5b9f\u884c\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u3092\u78ba\u8a8d\u3059\u308b\u5834\u5408\u306f\u3001\u300cstrace\u300d\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002
\n<\/p>\n

\u7c21\u5358\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u78ba\u8a8d\u3057\u3066\u307f\u308b\uff01\uff08echo\uff09<\/h2>\n

\u753b\u9762\u306b\u6587\u5b57\u3092\u51fa\u529b\u3059\u308b\u307f\u306eecho\u30b3\u30de\u30f3\u30c9\u3067strace\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n

\r\n$ strace echo aaa\r\nexecve("\/usr\/bin\/echo", ["echo", "aaa"], 0x7ffd6a2bd248 \/* 54 vars *\/) = 0\r\nbrk(NULL)                               = 0x5579614ee000\r\narch_prctl(0x3001 \/* ARCH_??? *\/, 0x7ffecf0642d0) = -1 EINVAL (Invalid argument)\r\nmmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcbbc43f000\r\naccess("\/etc\/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)\r\nopenat(AT_FDCWD, "\/etc\/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3\r\nnewfstatat(3, "", {st_mode=S_IFREG|0644, st_size=87699, ...}, AT_EMPTY_PATH) = 0\r\nmmap(NULL, 87699, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fcbbc429000\r\nclose(3)                                = 0\r\nopenat(AT_FDCWD, "\/lib\/x86_64-linux-gnu\/libc.so.6", O_RDONLY|O_CLOEXEC) = 3\r\nread(3, "\\177ELF\\2\\1\\1\\3\0\0\0\0\0\0\0\0\\3\0>\0\\1\0\0\0P\\237\\2\0\0\0\0\0"..., 832) = 832\r\npread64(3, "\\6\0\0\0\\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784\r\npread64(3, "\\4\0\0\0 \0\0\0\\5\0\0\0GNU\0\\2\0\0\\300\\4\0\0\0\\3\0\0\0\0\0\0\0"..., 48, 848) = 48\r\npread64(3, "\\4\0\0\0\\24\0\0\0\\3\0\0\0GNU\0i8\\235HZ\\227\\223\\333\\350s\\360\\352,\\223\\340."..., 68, 896) = 68\r\nnewfstatat(3, "", {st_mode=S_IFREG|0644, st_size=2216304, ...}, AT_EMPTY_PATH) = 0\r\npread64(3, "\\6\0\0\0\\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784\r\nmmap(NULL, 2260560, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fcbbc201000\r\nmmap(0x7fcbbc229000, 1658880, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x28000) = 0x7fcbbc229000\r\nmmap(0x7fcbbc3be000, 360448, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1bd000) = 0x7fcbbc3be000\r\nmmap(0x7fcbbc416000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x214000) = 0x7fcbbc416000\r\nmmap(0x7fcbbc41c000, 52816, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fcbbc41c000\r\nclose(3)                                = 0\r\nmmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcbbc1fe000\r\narch_prctl(ARCH_SET_FS, 0x7fcbbc1fe740) = 0\r\nset_tid_address(0x7fcbbc1fea10)         = 11923\r\nset_robust_list(0x7fcbbc1fea20, 24)     = 0\r\nrseq(0x7fcbbc1ff0e0, 0x20, 0, 0x53053053) = 0\r\nmprotect(0x7fcbbc416000, 16384, PROT_READ) = 0\r\nmprotect(0x55795f560000, 4096, PROT_READ) = 0\r\nmprotect(0x7fcbbc479000, 8192, PROT_READ) = 0\r\nprlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0\r\nmunmap(0x7fcbbc429000, 87699)           = 0\r\ngetrandom("\\x0c\\xde\\xfc\\xfa\\x80\\xc5\\xf7\\xcc", 8, GRND_NONBLOCK) = 8\r\nbrk(NULL)                               = 0x5579614ee000\r\nbrk(0x55796150f000)                     = 0x55796150f000\r\nopenat(AT_FDCWD, "\/usr\/lib\/locale\/locale-archive", O_RDONLY|O_CLOEXEC) = 3\r\nnewfstatat(3, "", {st_mode=S_IFREG|0644, st_size=6784496, ...}, AT_EMPTY_PATH) = 0\r\nmmap(NULL, 6784496, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fcbbbb85000\r\nclose(3)                                = 0\r\nnewfstatat(1, "", {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0), ...}, AT_EMPTY_PATH) = 0\r\nwrite(1, "aaa\\n", 4aaa\r\n)                    = 4\r\nclose(1)                                = 0\r\nclose(2)                                = 0\r\nexit_group(0)                           = ?\r\n+++ exited with 0 +++\r\n<\/pre>\n
\u5225\u306a\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u307f\u308b\uff01\uff08locale\uff09<\/h2>\n
\u5c11\u3057\u52d5\u4f5c\u304c\u591a\u304f\u306a\u308blocale\u30b3\u30de\u30f3\u30c9\u3067\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
\r\n$ strace locale\r\nexecve("\/usr\/bin\/locale", ["locale"], 0x7ffd794db690 \/* 54 vars *\/) = 0\r\nbrk(NULL)                               = 0x55c85ebe5000\r\narch_prctl(0x3001 \/* ARCH_??? *\/, 0x7fff6c005920) = -1 EINVAL (Invalid argument)\r\nmmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82f8f69000\r\naccess("\/etc\/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)\r\nopenat(AT_FDCWD, "\/etc\/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3\r\nnewfstatat(3, "", {st_mode=S_IFREG|0644, st_size=87699, ...}, AT_EMPTY_PATH) = 0\r\nmmap(NULL, 87699, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f82f8f53000\r\nclose(3)                                = 0\r\nopenat(AT_FDCWD, "\/lib\/x86_64-linux-gnu\/libc.so.6", O_RDONLY|O_CLOEXEC) = 3\r\nread(3, "\\177ELF\\2\\1\\1\\3\0\0\0\0\0\0\0\0\\3\0>\0\\1\0\0\0P\\237\\2\0\0\0\0\0"..., 832) = 832\r\npread64(3, "\\6\0\0\0\\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784\r\npread64(3, "\\4\0\0\0 \0\0\0\\5\0\0\0GNU\0\\2\0\0\\300\\4\0\0\0\\3\0\0\0\0\0\0\0"..., 48, 848) = 48\r\npread64(3, "\\4\0\0\0\\24\0\0\0\\3\0\0\0GNU\0i8\\235HZ\\227\\223\\333\\350s\\360\\352,\\223\\340."..., 68, 896) = 68\r\nnewfstatat(3, "", {st_mode=S_IFREG|0644, st_size=2216304, ...}, AT_EMPTY_PATH) = 0\r\npread64(3, "\\6\0\0\0\\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784\r\nmmap(NULL, 2260560, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f82f8d2b000\r\nmmap(0x7f82f8d53000, 1658880, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x28000) = 0x7f82f8d53000\r\nmmap(0x7f82f8ee8000, 360448, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1bd000) = 0x7f82f8ee8000\r\nmmap(0x7f82f8f40000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x214000) = 0x7f82f8f40000\r\nmmap(0x7f82f8f46000, 52816, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f82f8f46000\r\nclose(3)                                = 0\r\nmmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f82f8d28000\r\narch_prctl(ARCH_SET_FS, 0x7f82f8d28740) = 0\r\nset_tid_address(0x7f82f8d28a10)         = 11945\r\nset_robust_list(0x7f82f8d28a20, 24)     = 0\r\nrseq(0x7f82f8d290e0, 0x20, 0, 0x53053053) = 0\r\nmprotect(0x7f82f8f40000, 16384, PROT_READ) = 0\r\nmprotect(0x55c85e6f4000, 4096, PROT_READ) = 0\r\nmprotect(0x7f82f8fa3000, 8192, PROT_READ) = 0\r\nprlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0\r\nmunmap(0x7f82f8f53000, 87699)           = 0\r\ngetrandom("\\xd5\\x5d\\xb9\\xde\\xc3\\xb3\\xcc\\x2b", 8, GRND_NONBLOCK) = 8\r\nbrk(NULL)                               = 0x55c85ebe5000\r\nbrk(0x55c85ec06000)                     = 0x55c85ec06000\r\nopenat(AT_FDCWD, "\/usr\/lib\/locale\/locale-archive", O_RDONLY|O_CLOEXEC) = 3\r\nnewfstatat(3, "", {st_mode=S_IFREG|0644, st_size=6784496, ...}, AT_EMPTY_PATH) = 0\r\nmmap(NULL, 6784496, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f82f86af000\r\nclose(3)                                = 0\r\nnewfstatat(1, "", {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0), ...}, AT_EMPTY_PATH) = 0\r\nwrite(1, "LANG=en_US.UTF-8\\n", 17LANG=en_US.UTF-8\r\n)      = 17\r\nwrite(1, "LANGUAGE=\\n", 10LANGUAGE=\r\n)             = 10\r\nwrite(1, "LC_CTYPE=\\"en_US.UTF-8\\"\\n", 23LC_CTYPE="en_US.UTF-8"\r\n) = 23\r\nwrite(1, "LC_NUMERIC=en_US.UTF-8\\n", 23LC_NUMERIC=en_US.UTF-8\r\n) = 23\r\nwrite(1, "LC_TIME=en_US.UTF-8\\n", 20LC_TIME=en_US.UTF-8\r\n)   = 20\r\nwrite(1, "LC_COLLATE=\\"en_US.UTF-8\\"\\n", 25LC_COLLATE="en_US.UTF-8"\r\n) = 25\r\nwrite(1, "LC_MONETARY=en_US.UTF-8\\n", 24LC_MONETARY=en_US.UTF-8\r\n) = 24\r\nwrite(1, "LC_MESSAGES=\\"en_US.UTF-8\\"\\n", 26LC_MESSAGES="en_US.UTF-8"\r\n) = 26\r\nwrite(1, "LC_PAPER=en_US.UTF-8\\n", 21LC_PAPER=en_US.UTF-8\r\n)  = 21\r\nwrite(1, "LC_NAME=en_US.UTF-8\\n", 20LC_NAME=en_US.UTF-8\r\n)   = 20\r\nwrite(1, "LC_ADDRESS=en_US.UTF-8\\n", 23LC_ADDRESS=en_US.UTF-8\r\n) = 23\r\nwrite(1, "LC_TELEPHONE=en_US.UTF-8\\n", 25LC_TELEPHONE=en_US.UTF-8\r\n) = 25\r\n) = 27\r\nwrite(1, "LC_IDENTIFICATION=en_US.UTF-8\\n", 30LC_IDENTIFICATION=en_US.UTF-8\r\n) = 30\r\nwrite(1, "LC_ALL=\\n", 8LC_ALL=\r\n)                = 8\r\nexit_group(0)                           = ?\r\n+++ exited with 0 +++\r\n<\/pre>\n
Linux\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8d77\u52d5\u3068\u505c\u6b62\u306b\u95a2\u9023\u3059\u308b\u5171\u901a\u306e\u90e8\u5206\u3068\u3001\u72ec\u81ea\u306e\u90e8\u5206\u304c\u898b\u3048\u3066\u304d\u307e\u3059\u3002<\/p>\n
\u51fa\u529b\u7d50\u679c\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\u3059\u308b\uff01<\/h2>\n
\u51fa\u529b\u7d50\u679c\u306f\u591a\u91cf\u306b\u306a\u308b\u3053\u3068\u304c\u591a\u3044\u306e\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3057\u305f\u304f\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u300c-o\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u51fa\u529b\u30d5\u30a1\u30a4\u30eb\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n
\r\n$ strace -o strace.log locale\r\nLANG=en_US.UTF-8\r\nLANGUAGE=\r\nLC_CTYPE="en_US.UTF-8"\r\nLC_NUMERIC=en_US.UTF-8\r\nLC_TIME=en_US.UTF-8\r\nLC_COLLATE="en_US.UTF-8"\r\nLC_MONETARY=en_US.UTF-8\r\nLC_MESSAGES="en_US.UTF-8"\r\nLC_PAPER=en_US.UTF-8\r\nLC_NAME=en_US.UTF-8\r\nLC_ADDRESS=en_US.UTF-8\r\nLC_TELEPHONE=en_US.UTF-8\r\nLC_MEASUREMENT=en_US.UTF-8\r\nLC_IDENTIFICATION=en_US.UTF-8\r\nLC_ALL=\r\n<\/pre>\n
\u304a\u308f\u308a\u306b<\/h2>\n
strace\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u4f7f\u7528\u3057\u3066\u3044\u308b\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3044\u308d\u3044\u308d\u5b9f\u884c\u3057\u3066\u307f\u308b\u3068Linux\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u52d5\u304d\u304c\u898b\u3048\u3066\u304f\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u95a2\u9023\u8a18\u4e8b<\/h2>\n
\"\u3010\u8a18\u4e8b\u4e00\u89a7\u3011Linux\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u52d5\u4f5c\u3092\u89e3\u6790\u3059\u308b\uff01\"<\/div>
\u3010\u8a18\u4e8b\u4e00\u89a7\u3011Linux\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u52d5\u4f5c\u3092\u89e3\u6790\u3059\u308b\uff01<\/div>
Linux\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u52d5\u4f5c\u3092\u89e3\u6790\u3059\u308b\u305f\u3081\u306e\u8a18\u4e8b\u4e00\u89a7\u3092\u63b2\u8f09\u3057\u307e\u3059\u3002...<\/div><\/a><\/div>\n
\u95a2\u9023\u66f8\u7c4d\uff08Amazon\uff09<\/h2>\n
\"N\/A\"<\/a><\/p>\n
\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u5b9f\u884c\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u3092\u78ba\u8a8d\u3059\u308b\u5834\u5408\u306f\u3001\u300cstrace\u300d\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":5527,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[195],"tags":[282,896,25,895,491],"class_list":["post-7858","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analyze","tag-linux","tag-strace","tag-25","tag-895","tag-491"],"_links":{"self":[{"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/posts\/7858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/comments?post=7858"}],"version-history":[{"count":2,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/posts\/7858\/revisions"}],"predecessor-version":[{"id":15085,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/posts\/7858\/revisions\/15085"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/media\/5527"}],"wp:attachment":[{"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/media?parent=7858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/categories?post=7858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lab4ict.com\/system\/wp-json\/wp\/v2\/tags?post=7858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}