Lines Matching +full:capture +full:- +full:only

1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
30  * DDB capture support: capture kernel debugger output into a fixed-size
52  * While it would be desirable to use a small block-sized buffer and dump
53  * incrementally to disk in fixed-size blocks, it's not possible to enter
62 static MALLOC_DEFINE(M_DDB_CAPTURE, "ddb_capture", "DDB capture buffer");
74 static u_int db_capture_maxbufsize = DDB_CAPTURE_MAXBUFSIZE; /* Read-only. */
77 static int db_capture_inpager;		/* Suspend capture in pager. */
78 static int db_capture_inprogress;	/* DDB capture currently in progress. */
83 static SYSCTL_NODE(_debug_ddb, OID_AUTO, capture,
85     "DDB capture options");
88     &db_capture_bufoff, 0, "Bytes of data in DDB capture buffer");
92     "Maximum value for debug.ddb.capture.bufsize");
95     &db_capture_inprogress, 0, "DDB output capture in progress");
98  * Boot-time allocation of the DDB capture buffer, if any.  Force all buffer
105 	TUNABLE_INT_FETCH("debug.ddb.capture.bufsize", &db_capture_bufsize);  in db_capture_sysinit()
119  * Run-time adjustment of the capture buffer.
130 	if (error || req->newptr == NULL)  in sysctl_debug_ddb_capture_bufsize()
170     "Size of DDB capture buffer");
173  * Sysctl to read out the capture buffer from userspace.  We require
182 	error = priv_check(req->td, PRIV_DDB_CAPTURE);  in sysctl_debug_ddb_capture_data()
197     "DDB capture data");
200  * Routines for capturing DDB output into a fixed-size buffer.  These are
211 	len = min(buflen, db_capture_bufsize - db_capture_bufoff);  in db_capture_write()
241  * Zero out any bytes left in the last block of the DDB capture buffer.  This
243  * capture is stopped, in order to avoid injecting nul's into the middle of
251 	len = min(TEXTDUMP_BLOCKSIZE, (db_capture_bufsize -  in db_capture_zeropad()
258  * Reset capture state, which flushes buffers.
270  * Start capture.  Only one session is allowed at any time, but we may
278 		db_printf("Capture already started\n");  in db_capture_start()
285  * Terminate DDB output capture--real work is deferred to db_capture_dump,
287  * capture may be started again before the dump takes place.
294 		db_printf("Capture not started\n");  in db_capture_stop()
301  * Dump DDB(4) captured output (and resets capture buffers).
322 /*-
323  * DDB(4) command to manage capture:
325  * capture on          - start DDB output capture
326  * capture off         - stop DDB output capture
327  * capture reset       - reset DDB capture buffer (also stops capture)
328  * capture status      - print DDB output capture status
334 	db_error("capture [on|off|reset|status]\n");  in db_capture_usage()
359 			db_printf("capture is on\n");  in db_capture_cmd()
361 			db_printf("capture is off\n");  in db_capture_cmd()