pcap_can_set_rfmon (3)
Leading comments
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NAME
pcap_can_set_rfmon - check whether monitor mode can be set for a not-yet-activated capture handleSYNOPSIS
#include <pcap/pcap.h> int pcap_can_set_rfmon(pcap_t *p);
DESCRIPTION
pcap_can_set_rfmon() checks whether monitor mode could be set on a capture handle when the handle is activated.RETURN VALUE
pcap_can_set_rfmon() returns 0 if monitor mode could not be set, 1 if monitor mode could be set, and a negative value on error. A negative return value indicates what error condition occurred. The possible error values are:- PCAP_ERROR_NO_SUCH_DEVICE
- The capture source specified when the handle was created doesn't exist.
- PCAP_ERROR_PERM_DENIED
- The process doesn't have permission to check whether monitor mode could be supported.
- PCAP_ERROR_ACTIVATED
- The capture handle has already been activated.
- PCAP_ERROR
- Another error occurred. pcap_geterr() or pcap_perror() may be called with p as an argument to fetch or display a message describing the error.
Additional error codes may be added in the future; a program should check for 0, 1, and negative, return codes, and treat all negative return codes as errors. pcap_statustostr() can be called, with a warning or error code as an argument, to fetch a message describing the warning or error code.