ioctl error code -1
The ioctl() commands applicable to STREAMS, their arguments, and error conditions that ... The buffer pointed to by arg should be at least FMNAMESZ+1 bytes long, where ... In addition, an error code can be returned in the positive or negative ... , errno is a global variable that is set for system calls.and strerror converts the code (a negative integer) into a meaningful string ("Invalid argument" for example.) ... if(ioctl(fd, IOC_CARD_LOCK, &lock) < 0) int errsv = errno; printf
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 ioctl error code -1 相關參考資料
how to fix 'invalid argument' for ioctl requests to block device ...
1) The TLDP SCSI Generic (sg) HOW-TO guide is a font of information on ... There are also status and sense codes for error handling and understanding ... https://stackoverflow.com ioctl
The ioctl() commands applicable to STREAMS, their arguments, and error conditions that ... The buffer pointed to by arg should be at least FMNAMESZ+1 bytes long, where ... In addition, an error code c... https://pubs.opengroup.org IOCTL call and checking return value - Stack Overflow
errno is a global variable that is set for system calls.and strerror converts the code (a negative integer) into a meaningful string ("Invalid argument" for example.) ... if(ioctl(fd, IOC_C... https://stackoverflow.com ioctl return -1 with errno set to EPERM - Stack Overflow
The device you are calling ioctl on may include some code that checks for capabilities before performing the action you requested. Setting the ... https://stackoverflow.com IOCTL 範例 - iT 邦幫忙::一起幫忙解決難題，拯救IT 人的一天
IOCTL 的範例包含3 部分：kernel module、header file、ioctl user mode 程式。 ... return 0; } int release(struct inode *inode, struct file *filp) printk (KERN_INFO ... ( kernel_cdev,dev,1); if(ret < 0 ) printk(K... https://ithelp.ithome.com.tw ioctl()分析——從使用者空間到裝置驅動| 程式前沿
跳到 使用者空間的ioctl - ioctl()執行成功時返回0，失敗則返回-1，並設定全域性變數errno值，如下： EBADF ：fd is not a valid descriptor. EFAULT ：arg ... https://codertw.com ioctl(2) - Linux manual page - Michael Kerrisk - man7.org
Usually, on success zero is returned. A few ioctl() requests use the return value as an output parameter and return a nonnegative value on success. On error, -1 is returned, and errno is set appropria... http://man7.org linux內核ioctl函數學習@ linux device driver :: 隨意窩Xuite日誌
一、 什麼是ioctl。 ioctl是設備驅動程序中對設備的I/O通道進行管理的函數。所謂對I/O通道進行 ... return 2; } return (edata.data ? 0 : 1); } int main(int argc, char **argv) https://blog.xuite.net linux系统中errno与error对照表- fengbohello - 博客园
... 中errno与error对照表. 1、使用了一个小程序输出所有的errno对应的error字符串，代码如下 ... errno : 25 , error : Inappropriate ioctl for device errno : 26 , error : Text file ... errno : 56 , error : Invalid request code errno : ... https://www.cnblogs.com Smart Card Events (Windows 10) - Microsoft 365 Security ...
%1 = Windows error code %2 = Smart card reader name %3 = IOCTL being canceled %4 = First 4 bytes of the command that was sent to the ... https://docs.microsoft.com |