...o kernel mode, at which point the kernel does the real work of the system call; • setting errno if the system call returns an error number when the kernel returns the CPU to use…...mediately proceed. Otherwise, if IPC_NOWAIT is specified in sem_flg , semop () fails with errno set to EAGAIN (and none of the operations in sops is performed). Otherwise, semzc…...mediately proceed. Otherwise, if IPC_NOWAIT is specified in sem_flg , semop () fails with errno set to EAGAIN (and none of the operations in sops is performed). Otherwise, semzc…...) call may also fail if: • the queue is removed, in which case the system call fails with errno set to EIDRM ; or • a signal is caught, in which case the system call fails with …...) call may also fail if: • the queue is removed, in which case the system call fails with errno set to EIDRM ; or • a signal is caught, in which case the system call fails with …...) call may also fail if: • the queue is removed, in which case the system call fails with errno set to EIDRM ; or • a signal is caught, in which case the system call fails with …...fer fewer bytes than requested (see read (2) and write (2)). On error, -1 is returned and errno is set to indicate the error. ERRORS pread () can fail and set errno to any error…...fer fewer bytes than requested (see read (2) and write (2)). On error, -1 is returned and errno is set to indicate the error. ERRORS pread () can fail and set errno to any error…...fer fewer bytes than requested (see read (2) and write (2)). On error, -1 is returned and errno is set to indicate the error. ERRORS pread () can fail and set errno to any error…...fer fewer bytes than requested (see read (2) and write (2)). On error, -1 is returned and errno is set to indicate the error. ERRORS pread () can fail and set errno to any error…...ing thread's nice value, which may be a negative number. On error, it returns -1 and sets errno to indicate the error. Since a successful call to getpriority () can legitimately…...ing thread's nice value, which may be a negative number. On error, it returns -1 and sets errno to indicate the error. Since a successful call to getpriority () can legitimately…...ected to the write end of the pipe referred to by fd_in . On error, tee () returns -1 and errno is set to indicate the error. ERRORS EAGAIN SPLICE_F_NONBLOCK was specified in fl…...ating null byte. RETURN VALUE On success, zero is returned. On error, -1 is returned, and errno is set to indicate the error. ERRORS EFAULT name is an invalid address. EINVAL le…...ating null byte. RETURN VALUE On success, zero is returned. On error, -1 is returned, and errno is set to indicate the error. ERRORS EFAULT name is an invalid address. EINVAL le…...nd system call arguments. If the filter is invalid, seccomp () fails, returning EINVAL in errno . If fork (2) or clone (2) is allowed by the filter, any child processes will be …...RETURN VALUE pciconfig_read () On success, zero is returned. On error, -1 is returned and errno is set to indicate the error. pciconfig_write () On success, zero is returned. On…...RETURN VALUE pciconfig_read () On success, zero is returned. On error, -1 is returned and errno is set to indicate the error. pciconfig_write () On success, zero is returned. On…...RETURN VALUE pciconfig_read () On success, zero is returned. On error, -1 is returned and errno is set to indicate the error. pciconfig_write () On success, zero is returned. On…...pplied when a signal is sent using kill (2): • si_signo is set to the signal number; • si_errno is set to 0; • si_code is set to SI_USER ; • si_pid is set to the caller's PID; a…