WebIt is impossible for read () to read any data from a STREAMS-based file indicated by fs . It will always return -1 with errno set to EBADF. EINVAL will never be set because there are no multiplexing STREAMS drivers. See open () — Open a file for more information. If unsuccessful, read () returns -1 and sets errno to one of the following: Error Code WebOct 12, 2024 · The following error codes can be returned along with the corresponding network event. Event: FD_CONNECT Event: FD_CLOSE Event: FD_ACCEPT Event: FD_ADDRESS_LIST_CHANGE Event: FD_GROUP_QOS Event: FD_QOS Event: FD_OOB Event: FD_READ Event: FD_WRITE Event: FD_ROUTING_INTERFACE_CHANGE Example Code
linux/iio_event_monitor.c at master · torvalds/linux · GitHub
Webabcminiuser HID: hidraw: Add additional hidraw input/output report ioctls. * applications using hidraw. * yet populate new version of hidraw.h to userspace. /* Open the Device with non-blocking reads. WebMar 18, 2024 · bytes = read (fd, event, sizeof (*event)); if (bytes == sizeof (*event)) return 0; /* Error, could not read full event. */ return - 1; } /** * Returns the number of axes on the controller or 0 if an error occurs. */ size_t get_axis_count ( int fd) { __u8 axes; if ( ioctl (fd, JSIOCGAXES, &axes) == - 1) return 0; return axes; } /** brown tabby blotched
eventfd_read(3) - Linux man page - die.net
WebEINVAL fd is attached to an object which is unsuitable for writing; or the file was opened with the O_DIRECT flag, and either the address specified in buf, the value specified in count, or the file offset is not suitably aligned. EIO A low-level … WebNov 3, 2015 · The problem was in the size of the read () (rd = read (fd, ev, size); Where, struct input_event ev [64]; size = sizeof (struct input_event) * 64; Thats a big size for the read () … WebSpecifying a buffer of size sizeof(struct inotify_event) + NAME_MAX + 1 will be sufficient to read at least one event. inotify events The inotify_add_watch(2) mask argument and the … everywhere i look molly carew