nodeupdown_errnum - Man Page

#include <nodeupdown.h>

int nodeupdown_errnum(nodeupdown_t handle);

char *nodeupdown_strerror(int errnum);

char *nodeupdown_errormsg(nodeupdown_t handle);

void nodeupdown_perror(nodeupdown_t handle, const char *msg);

nodeupdown_errnum() returns the error code stored in handle.

nodeupdown_strerror() returns a pointer to a string describing the error code errnum.

Generally, an error code is retrieved by nodeupdown_errnum() and then passed to nodeupdown_strerror().

nodeupdown_errormsg() returns a pointer to a string describing the error stored in handle.  It is logically equivalent to:

char *nodeupdown_strerror(nodeupdown_errnum(nodeupdown_t handle));

nodeupdown_perror() is similar to perror(3). It produces a message on standard error output, describing the error stored in handle.  If msg is not NULL, the string pointed to by msg, a colon, and a blank are printed before the error message.

/usr/include/nodeupdown.h