Copy a range of data from one file to another NAME copy_file_range - Copy a range of data from...copy the unwind data to caller's buffer NAME getunwind - copy the unwind data to caller's buff......signed int flags ); DESCRIPTION splice () moves data between two file descriptors without copying between kernel address space and user address space. It transfers up to len byt…...DESCRIPTION sendfile () copies data between one file descriptor and another. Because this copying is done within the kernel, sendfile () is more efficient than the combination o…...DESCRIPTION sendfile () copies data between one file descriptor and another. Because this copying is done within the kernel, sendfile () is more efficient than the combination o…...(2). vfork () is a special case of clone (2). It is used to create new processes without copying the page tables of the parent process. It may be useful in performance-sensitive…...library function. In many cases, the C library wrapper function does nothing more than: • copying arguments and the unique system call number to the registers where the kernel e…...opped from execution until the page fault is resolved from user-space by either an UFFDIO_COPY or an UFFDIO_ZEROPAGE ioctl. UFFDIO_REGISTER_MODE_MINOR (since Linux 5.13) When re…...appropriate. The caller can take advantage of this subtlety to set up subsequent calls by copying fsmap_head.fmh_recs[fsmap_head.fmh_entries - 1] into the low key. The function …...o indicate the error. ERRORS EBADF fd is not an open file descriptor. EFAULT Problem with copying results to user space. EINVAL whence is invalid. VERSIONS You probably want to …...error, -1 is returned, and errno is set to indicate the error. ERRORS EFAULT Problem with copying information to user space. EINVAL Invalid pid. ENOSYS The system call is not ye…...on (see the description of msgrcv () below). msgsnd() The msgsnd () system call appends a copy of the message pointed to by msgp to the message queue whose identifier is specifi…...on (see the description of msgrcv () below). msgsnd() The msgsnd () system call appends a copy of the message pointed to by msgp to the message queue whose identifier is specifi…...on (see the description of msgrcv () below). msgsnd() The msgsnd () system call appends a copy of the message pointed to by msgp to the message queue whose identifier is specifi…...NOTES Conceptually, tee () copies the data between the two pipes. In reality no real data copying takes place though: under the covers, tee () assigns data to the output by mere…...ecve (2), the usual semantics apply for the file descriptor created by memfd_create (). A copy of the file descriptor is inherited by the child produced by fork (2) and refers t…...d, and errno is set to indicate the error. ERRORS EFAULT command was GS_SET_BC_CB and the copying of the guarded storage control block structure pointed by the gs_cb argument ha…...ror, then it returns -1, with errno set to indicate the error. ERRORS EFAULT Problem with copying information from user space. EINTR The pause has been interrupted by a signal t…...chitecture. See NOTES. ( data is ignored; but see NOTES.) PTRACE_POKETEXT PTRACE_POKEDATA Copy the word data to the address addr in the tracee's memory. As for PTRACE_PEEKTEXT a…...is ~0U), the kernel will unshare a new file descriptor table for the caller up to first , copying as few file descriptors as possible. This avoids subsequent close (2) calls ent…