NAME

errstr − description of last system call error

SYNOPSIS

int errstr(char ∗ans)

DESCRIPTION

When a system call fails it returns −1 and records a string describing the error in a per-process buffer.  ­Errstr copies the contents of that buffer into the array ­ans and clears the buffer.  ­Ans should contain at least ­ERRLEN characters (defined in <libc.h>). 

The verb ­r in print(2) calls ­errstr and outputs the error string. 

SEE ALSO

intro(2), perror(2)

Plan 9  —  January 03, 1993