NAME errno - number of last error LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include DESCRIPTION ... header file defines the integer variable errno , which is set by sys…level; /* depth (-1 to N) */ int fts_errno; /* file errno */ long fts_number; /* local numeric ... error return, and the fts_errno field will be set to indicate what causedlevel; /* depth (-1 to N) */ int fts_errno; /* file errno */ long fts_number; /* local numeric ... error return, and the fts_errno field will be set to indicate what causedlevel; /* depth (-1 to N) */ int fts_errno; /* file errno */ long fts_number; /* local numeric ... error return, and the fts_errno field will be set to indicate what causedlevel; /* depth (-1 to N) */ int fts_errno; /* file errno */ long fts_number; /* local numeric ... error return, and the fts_errno field will be set to indicate what causedlevel; /* depth (-1 to N) */ int fts_errno; /* file errno */ long fts_number; /* local numeric ... error return, and the fts_errno field will be set to indicate what causedlevel; /* depth (-1 to N) */ int fts_errno; /* file errno */ long fts_number; /* local numeric ... error return, and the fts_errno field will be set to indicate what causedvalue that will be assigned to the errno variable of the target. The response ... failure, -1 is returned, and errno is set to indicate the cause of the errorerror-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…NAME gethostbyname, gethostbyaddr, sethostent, gethostent, endhostent, h_errno, herror, hstrerror, gethostbyaddr_r, gethostbyname2, gethostbyname2 ... void endhostent(void); [[depr…return value depends on the function; errno is set to EDOM . SING A pole error ... point number), appropriately signed. In most cases, errno is set to EDOM . OVERFLOW An overflowinvalid, seccomp () fails, returning EINVAL in errno . If fork (2) or clone (2) is allowed ... FILTER operation fails and returns EACCES in errno . This requirement ensures that an…close routines return -1 on error (setting errno ) and 0 on success. del A pointer ... delete routines return -1 on error (setting errno ), 0 on successclose routines return -1 on error (setting errno ) and 0 on success. del A pointer ... delete routines return -1 on error (setting errno ), 0 on successfour, 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 datastrtol () returns LONG_MAX . In both cases, errno is set to ERANGE . Precisely the same ... ERRORS This function does not modify errno on success. EINVAL (not in C99) The givenstrtol () returns LONG_MAX . In both cases, errno is set to ERANGE . Precisely the same ... ERRORS This function does not modify errno on success. EINVAL (not in C99) The givenstrtol () returns LONG_MAX . In both cases, errno is set to ERANGE . Precisely the same ... ERRORS This function does not modify errno on success. EINVAL (not in C99) The givenvoid perror(const char * s ); #include int errno ; /* Not really declared this way; see errno ... message corresponding to the current value of errno and a new-linevoid perror(const char * s ); #include int errno ; /* Not really declared this way; see errno ... message corresponding to the current value of errno and a new-line