error-reporting mechanisms: the older one sets errno ; the newer one uses the floating-point ... error from a mathematical function should set errno to zero, and make the following…four, read (2) returns -1 and sets errno to EINVAL . If there is no data ... return value is set to -1 and errno is set to EAGAIN . When datareported by FAN_FS_ERROR are generic errno values, but not all kinds of error ... return value will not be -1, and errno will not be set. Thus, the readingsuccess. On error, NULL is returned, and errno is set to indicate the error. mempcpy ... success. On error, -1 is returned, and errno is set to indicate the error. strlcpyerror handling sd_bus_error_get_errno (3) — sd-bus error handling sd_bus_error ... error handling sd_bus_error_set_errno (3) — sd-bus error handling sd_bus_erroropen %s: %s\n", map_file, strerror(errno)); exit(EXIT_FAILURE); } if (write(fd, mapping ... write %s: %s\n", map_file, strerror(errno)); exit(EXIT_FAILURE); } close(fd); } /* Linuxsizeof(buf)); if (len == -1 && errno != EAGAIN) { perror("read"); exit(EXIT_FAILURE); } /* If the nonblocking ... read, then it returns -1 with errno set to EAGAIN. In that case, w…struct sock_extended_err { uint32_t ee_errno; /* error number */ uint8_t ee_origin; /* where ... OFFENDER(struct sock_extended_err *); ee_errno contains the errno number of the que…sections 2, 3, 4, and 9 errno settings only. .\" .Sh SEE ALSO .\" .Xr foobar ... discouraged. See Bl -diag . ERRORS Documents errno(2) settings in sectionscause application state to become inconsistent. errno Fetching and setting the value of errno ... safe provided that the signal handler saves errno on entry and restores its value …Linux kernel implementation of cpusets sets errno to specify the reason for a failed system ... call affecting cpusets. The possible errno settings and their meaning when set on a …type) • signal mask ( pthread_sigmask (3)) • the errno variable • alternate signal stack ( sigaltstack (2)) • real ... meaning as the error numbers returned in errno by conventiona…sendmsg(fd, &msg, 0) < 0) { if (errno == EINTR) continue; perror("sendmsg"); return -1; } return ... flags); if (ret < 0) { if (errno == EINTR) continue; perror("recvmsg"); returnvalues that may be placed in errno in the event of an error, along with ... VALUE The preferred wording to describe how errno is set is " errnobytes; otherwise write (2) fails, with errno set to EAGAIN . O_NONBLOCK disabled, n > PIPE ... full, then write (2) fails, with errno set to EAGAIN . Otherwise, frombeen reached, then -1 is returned with errno set to EAGAIN or EWOULDBLOCK , or EINPROGRESS ... received, (i.e., ioctl (2) returns -1 with errno set to ENOENT ). SIOCSPGRP Set the p…line number and the function name. ERRNO= The low-level Unix error number causing this ... Contains the numeric value of errno (3) formatted as a decimal string. Added in versionReturn 0 on success, or a negative errno in case of failure. -EAFNOSUPPORT if socket ... value is returned to the userspace via errno. Return The BPF program's return valueretry attempts. If a query failed with errno other than ENOENT, will initiate several attemptscertain system calls might set different errno values. With cookie present, write (2) or sendmsg