errno

Eclipse PyDev Autocomplete Issues

由 久未见 提交于 2019-12-12 23:15:30
问题 I installed PyDev in Eclipse on my Mac. Whenever I am writing code, it has only a few suggestions and is seemingly incomplete. For example, whenever I type 'r', it only suggests "raise()" and "return()". However, all of the other functions that I would expect for it to suggest still execute at runtime. This is the error: Error connecting to python process. - the process in NOT ALIVE anymore (output=0) - ProcessInfo: Executed: /usr/bin/python -u /Users//Downloads/eclipse 2/plugins/org.python

MY SQL - Error Code: 1010. Error dropping database (can't rmdir; errno: 13)

由 夙愿已清 提交于 2019-12-12 13:51:58
问题 When trying to drop a database in MySQL 'DROP DATABASE IF EXISTS temporarydata' I am getting the following error Error Code: 1010. Error dropping database (can't rmdir '.\temporarydata', errno: 13) I have researched into this and I think it may be a permission issue, however all the fixes I have found have been for linux computers. Has anyone got any idea how to sort this out in windows 7? 回答1: Errno 13 MySQL has no write permission on the parent directory in which the temporarydata folder

Android 2.1 file i/o: pread fails with errno 22 (EINVAL, Invalid argument)

由 北慕城南 提交于 2019-12-12 13:29:22
问题 I'm doing simple file-copy operation using open(2), pread(2) and pwrite(2) as seen below (code simplified a bit). My problem is that the ::pread(2) functions fails returning -1, with [errno=22]. Note that both source and destination files are placed on SD card. This problem occurs on Android 2.1 (API level <=7, both emulator and real device), no problem when running it on Android 2.3 (API level 9). Is there a problem in my code or is it a bug in kernel/stdlib? fileSource = ::open(pcSource, O

Why errno is not set to EDOM even sqrt takes out of domain arguement?

由 こ雲淡風輕ζ 提交于 2019-12-12 10:58:31
问题 errno is not being set to EDOM for domain error of sqrt() function in windows It shows correctly on Linux but failed on windows (Using GCC 7.4) ... #include <stdio.h> #include <errno.h> #include <math.h> int main () { double val; errno = 0; val = sqrt(-10); if(errno == EDOM) { printf("Invalid value \n"); } else { printf("Valid value\n"); } errno = 0; val = sqrt(10); if(errno == EDOM) { printf("Invalid value\n"); } else { printf("Valid value\n"); } return(0); } Expected result : Invalid value

How do I fix InnoDB corruption locking a table name from creation (errno: -1) on AWS RDS?

由 倾然丶 夕夏残阳落幕 提交于 2019-12-12 10:53:59
问题 TIP : Do not run ALTER statements in MySQL Workbench for a "Standard TCP/IP over SSH" connection. It is much better to shell into the server and run the ALTER from there. That way, if you lose connection to the server, the ALTER should still finish its job. I'm trying to create a new table in my database that I tried creating yesterday. The problem is, my internet's been losing connection in micro-dropouts. I believe that one of these blips happened when I was creating the table, and now when

python errno 23 - socket livestatus

由 ￣綄美尐妖づ 提交于 2019-12-12 04:12:34
问题 I'm trying to send two queries to the server with this script, to get the MK Livestatus: live.py #!/usr/bin/python socket_path = "/tmp/run/live" import socket s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) s.connect(socket_path) # Get Hosts hosts = s.send("GET hosts\nColumns: name\n") s.shutdown(socket.SHUT_WR) hosts = s.recv(1024) hosts = [ line.split(';') for line in hosts.split('\n')[:-1] ] hostsB = s.send("GET hosts\nColumns: name\n") s.close() But I get this error: Traceback (most

LinuxC语言编程03:文件I/O

由 99封情书 提交于 2019-12-11 19:44:13
LinuxC语言编程03:文件I/O 标准I/O 流 文本流与二进制流 流的缓冲类型 预定义的流 流的打开与关闭 流的打开 流的关闭 处理错误信息 流的读写 按字符读写 按字符输入 按字符输出 按行读写 按行输入 按行输出 按对象读写 流的刷新 流的定位 判断流的出错与结束 格式化输入输出 文件I/O 文件描述符 文件的打开与关闭 文件的打开 文件的关闭 文件的读写 文件的定位 目录的访问 文件的访问权限 文件的属性 标准I/O 标准I/O是指标准C中定义的一组输入和输出的API,与操作系统无关,具备可移植性. 流 标准I/O将打开文件的信息抽象成为流(stream),使用 FILE 结构体代表流.标准I/O的所有操作都是围绕 FILE 结构体进行的. 文本流与二进制流 Windows操作系统区分文本流与二进制流,两者间最显著的区别在文本流中 \n 会被替换成 \r\n ,而二进制流不会做这种转换.而Linux操作系统不区分文本流与二进制流,不会做这种转换. 流的缓冲类型 流有三种缓冲类型: 全缓冲: 当流的缓冲区无数据或无空间时才执行实际I/O操作.使用标准I/O打开文件时默认是全缓冲. 行缓冲: 当在输入输出中遇到换行符 \n 时才执行实际I/O操作.当流与终端交互时(输入或输出)是行缓冲. 无缓冲: 直接与文件进行交互,不进行缓存.向标准错误流输出时是无缓冲. 预定义的流

How to access errno after clone (or: How to set errno location)

由 自闭症网瘾萝莉.ら 提交于 2019-12-11 06:52:53
问题 Per traditional POSIX, errno is simply an integer lvalue, which works perfectly well with fork , but oviously doesn't work nearly as well with threads. As per pthreads, errno is a thread-local integer lvalue. Under Linux/NTPL, as an implementation detail, errno is some "macro that expands to a function returning an integer lvalue". On my Debian system, this seems to be *__errno_location () , on some other systems I've seen things like &(gettib()->errnum . TL;DR Assuming I've used clone to

cassandra snapshot : Unable to create hard link from errno 1

由 天大地大妈咪最大 提交于 2019-12-10 21:24:09
问题 i'm using cassandra 1.2.8 in ubuntu 12.4. i used snapshot command already and backing up process was ok! but now when i use this command i get error like below: Exception in thread "main" FSWriteError in /var/lib/cassandra/data/english/word_doc /snapshots/1393155090911/english-word_doc-ic-10-Index.db at org.apache.cassandra.io.util.FileUtils.createHardLink(FileUtils.java:80) at org.apache.cassandra.io.sstable.SSTableReader.createLinks(SSTableReader.java:1063) at org.apache.cassandra.db

IOCTL call and checking return value

由 孤人 提交于 2019-12-10 19:43:15
问题 if((err = ioctl(fd, IOC_CARD_LOCK, &lock)) < 0) { printf("ioctl failed and returned errno %d \n",err); } Is the above code correct and a good programming practice? It does compile on my PC. i.e does it populate err with the return value of ioctl and check if err is < 0 Is the above method a standard way to return "err" returned by IOCTL. There seem to be some standard variable called errno? what is it? Will that be the same as above? 回答1: I found out a better way to do this. if(ioctl(fd, IOC
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