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72 lines
2.6 KiB
72 lines
2.6 KiB
.\" Copyright (c) 1994, 1996, 1997 |
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.\" The Regents of the University of California. All rights reserved. |
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.\" |
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.\" Redistribution and use in source and binary forms, with or without |
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.\" modification, are permitted provided that: (1) source code distributions |
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.\" retain the above copyright notice and this paragraph in its entirety, (2) |
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.\" distributions including binary code include the above copyright notice and |
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.\" this paragraph in its entirety in the documentation or other materials |
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.\" provided with the distribution, and (3) all advertising materials mentioning |
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.\" features or use of this software display the following acknowledgement: |
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.\" ``This product includes software developed by the University of California, |
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.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
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.\" the University nor the names of its contributors may be used to endorse |
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.\" or promote products derived from this software without specific prior |
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.\" written permission. |
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.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
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.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
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.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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.\" |
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.TH PCAP_CAN_SET_RFMON 3PCAP "31 July 2016" |
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.SH NAME |
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pcap_can_set_rfmon \- check whether monitor mode can be set for a |
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not-yet-activated capture handle |
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.SH SYNOPSIS |
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.nf |
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.ft B |
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#include <pcap/pcap.h> |
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.LP |
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.ft B |
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int pcap_can_set_rfmon(pcap_t *p); |
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.ft |
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.fi |
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.SH DESCRIPTION |
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.B pcap_can_set_rfmon() |
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checks whether monitor mode could be set on a capture handle when |
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the handle is activated. |
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.SH RETURN VALUE |
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.B pcap_can_set_rfmon() |
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returns 0 if monitor mode could not be set, |
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1 if monitor mode could be set, and a negative value on error. |
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A negative return value indicates what error condition occurred. |
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The possible error values are: |
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.TP |
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.B PCAP_ERROR_NO_SUCH_DEVICE |
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The capture source specified when the handle was created doesn't |
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exist. |
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.TP |
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.B PCAP_ERROR_PERM_DENIED |
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The process doesn't have permission to check whether monitor mode |
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could be supported. |
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.TP |
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.B PCAP_ERROR_ACTIVATED |
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The capture handle has already been activated. |
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.TP |
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.B PCAP_ERROR |
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Another error occurred. |
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.B pcap_geterr() |
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or |
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.B pcap_perror() |
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may be called with |
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.I p |
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as an argument to fetch or display a message describing the error. |
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.LP |
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Additional error codes may be added in the future; a program should |
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check for 0, 1, and negative, return codes, and treat all negative |
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return codes as errors. |
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.B pcap_statustostr() |
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can be called, with a warning or error code as an argument, to fetch a |
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message describing the warning or error code. |
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.SH SEE ALSO |
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pcap(3PCAP), pcap_create(3PCAP), pcap_activate(3PCAP), |
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pcap_set_rfmon(3PCAP)
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