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kernel利用pt regs劫持seq operations的遷移過(guò)程詳解_C 語(yǔ)言_腳本之家
劫持seq_operations進(jìn)行棧遷移 seq_operations是一個(gè)大小為0x20的結(jié)構(gòu)體,在打開(kāi)/proc/self/stat會(huì)申請(qǐng)出來(lái)。里面定義了四個(gè)函數(shù)指針,通過(guò)他們可以泄露出內(nèi)核基地址。 1 2 3 4 5 6 struct seq_operations { void * (*start) (struct seq_file *m, loff_t *pos); void (*sto
www.dbjr.com.cn/article/2481...htm 2025-5-28
5. 數(shù)據(jù)結(jié)構(gòu) Data Structures
5.3 元組(Tuples)和序列(Sequences )Tuples and Sequences We saw that lists and strings have many common properties, such as indexing and slicing operations. They are two examples ofsequencedata types. Since Python is an evolving language, other sequence data types may be added. There is also ...
www.dbjr.com.cn/shouce/python/python_cn... 2025-6-8
SysBench系統(tǒng)性能基準(zhǔn)測(cè)試工具_(dá)主機(jī)測(cè)評(píng)網(wǎng)
--file-test-mode=STRING 文件測(cè)試模式{seqwr(順序?qū)?, seqrewr(順序讀寫), seqrd(順序讀), rndrd(隨機(jī)讀), rndwr(隨機(jī)寫), rndrw(隨機(jī)讀寫)} --file-io-mode=STRING 文件操作模式{sync(同步),async(異步),fastmmap(快速map映射),slowmmap(慢map映射)}。默認(rèn)是sync --file-extra-flags=STRING 使用...
zhuji.jb51.net/yunwei/82...html 2025-6-11
SDO XML Data Access Service Functions
$seq->insert(12345); $seq->insert(" has been dispatched today. Thanks for your business with us."); $type = $do->getType(); print($xmldas->saveDataObjectToString($do, $type[0], $type[1])); } catch (SDO_Exception $e) { print($e); }} catch (SDO_TypeNotFoundException $e)...
www.dbjr.com.cn/shouce/php5/zh/ref.sdo-... 2025-6-10
淺析C++ atomic 和 memory ordering_C 語(yǔ)言_腳本之家
load(memory_order __m = memory_order_seq_cst)constnoexcept {return_M_base.load(__m); } Relaxed Consistency 松弛內(nèi)存序,對(duì)應(yīng)的std::memory_order_relaxed,在 cppreference 上的說(shuō)明是:"不保證同步操作,不會(huì)將一定的順序強(qiáng)加到并發(fā)內(nèi)存訪問(wèn)上,只保證原子性和修改順序一致性",并且通常用于計(jì)數(shù)器,比如share...
www.dbjr.com.cn/article/2460...htm 2025-6-3
python中l(wèi)ist列表的高級(jí)函數(shù)_python_腳本之家
seq = range(8) #定義一個(gè)列表 > def add(x, y): return x+y #自定義函數(shù),有兩個(gè)形參 ... > map(add, seq, seq) #使用map函數(shù),后兩個(gè)參數(shù)為函數(shù)add對(duì)應(yīng)的操作數(shù),如果列表長(zhǎng)度不一致會(huì)出現(xiàn)錯(cuò)誤 [0, 2, 4, 6, 8, 10, 12, 14] 3)、reduce(function, sequence): reduce函數(shù)功能是將sequenc...
www.dbjr.com.cn/article/844...htm 2025-5-30
再談遠(yuǎn)程控制linux下_unix linux_腳本之家
; Favor correctness over speed in some graphics operations "PerfectGraphics" = "N" ; Color depth to use on multi-depth screens ;;"ScreenDepth" = "16" ; Name of X11 display to use ;;"Display" = ":0.0" ; Allow the window manager to manage created windows ...
www.dbjr.com.cn/article/34...htm 2025-6-9
利用kernel提供的接口打印進(jìn)程號(hào)(pid)_linux shell_腳本之家
我們知道linux是模塊化的內(nèi)核。實(shí)現(xiàn)模塊、利用kernel提供的接口,首先了解寫模塊的基本框架。下面的c文件就是最基本的框架,當(dāng)然還有怎樣添加一些符號(hào)變量,利用的module_param,沒(méi)用上 GPT4.0+Midjourney繪畫(huà)+國(guó)內(nèi)大模型 會(huì)員永久免費(fèi)使用! 【如果你想靠AI翻身,你先需要一個(gè)靠譜的工具!】 ...
www.dbjr.com.cn/article/432...htm 2025-5-21
Oracle和Mysql的主要區(qū)別_oracle_腳本之家
id NUMBER DEFAULT seq_name.NEXTVAL ); MySQL:使用 AUTO_INCREMENT 來(lái)定義自增列。 1 2 3 CREATE TABLE test_table ( id INT AUTO_INCREMENT PRIMARY KEY ); 3. 字符串連接 Oracle:使用 || 來(lái)連接字符串。 1 SELECT 'Hello ' || 'World' FROM dual; MySQL:使用 CONCAT() 函數(shù)來(lái)連接字符串。 1 SEL...
www.dbjr.com.cn/database/341088v...htm 2025-6-7
Linux中計(jì)算特定CPU使用率案例詳解_LINUX_操作系統(tǒng)_腳本之家
.read = seq_read, .llseek = seq_lseek, .release = single_release, }; static int __init proc_stat_init(void) { proc_create("stat", 0, NULL, &proc_stat_operations); return 0; } fs_initcall(proc_stat_init); 參考 http://man7.org/linux/man-pages/man5/proc.5.html https://gith...
www.dbjr.com.cn/linuxjishu/7884...html 2025-5-29