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One of the first system calls made by the C standard I/O library is in an isatty() call used to determine if the program is being run interactively by a human (in which case isatty() will succeed and the library will write its output a line at a time so the user sees a regular flow of text) or as part of a pipeline (in which case it writes a ...
No such device ENOTDIR: 20: Not a directory EISDIR: 21: Is a directory EINVAL: 22: Invalid argument ENFILE: 23: Too many open files in system EMFILE: 24: Too many open files ENOTTY: 25: Inappropriate ioctl for device ETXTBSY: 26: Text file busy EFBIG: 27: File too large ENOSPC: 28: No space left on device ESPIPE: 29: Illegal seek EROFS: 30 ...
An ioctl interface is a single system call by which userspace may communicate with device drivers. Requests on a device driver are vectored with respect to this ioctl system call, typically by a handle to the device and a request number. The basic kernel can thus allow the userspace to access a device driver without knowing anything about the ...
This is a list of POSIX (Portable Operating System Interface) commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification (SUS). These commands can be found on Unix operating systems and most Unix-like operating systems.
Sign-extend 32-bit value in EAX to 64-bit value in EDX:EAX. Mainly used to prepare a dividend for the 32-bit IDIV (signed divide) instruction. CWD: JECXZ rel8: E3 cb [f] Jump if ECX is zero: JCXZ: PUSHAD: 60: Push all 32-bit registers onto stack [g] PUSHA: POPAD: 61: Pop all 32-bit general-purpose registers off stack [h] POPA: PUSHFD: 9C: Push ...
Evdev and libevdev form a prominent part of the Linux API.. evdev (short for 'event device') is a generic input event interface in the Linux kernel and FreeBSD. [1] It generalizes raw input events from device drivers and makes them available through character devices in the /dev/input/ directory.
The term user space (or userland) refers to all code that runs outside the operating system's kernel. [2] User space usually refers to the various programs and libraries that the operating system uses to interact with the kernel: software that performs input/output, manipulates file system objects, application software, etc.
Therefore, instead of having hard-coded scripts to determine device availability and suitability, Dracut's initramfs depends on the Linux device manager to create symbolic links to device nodes. When the root file system's device node appears, Dracut mounts it as the new root file system.