[blktrace.git] / blkparse_fmt.c

/*
 * This file contains format parsing code for blkparse, allowing you to
 * customize the individual action format and generel output format.
 */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>

#include "blktrace.h"

#define VALID_SPECS	"ABCDFGMPQRSTUWX"

#define HEADER		"%D %2c %8s %5T.%9t %5p %2a %3d "

static char *override_format[256];

static inline int valid_spec(int spec)
{
	return strchr(VALID_SPECS, spec) != NULL;
}

void set_all_format_specs(char *option)
{
	char *p;

	for (p = VALID_SPECS; *p; p++)
		if (override_format[(int)(*p)] == NULL)
			override_format[(int)(*p)] = strdup(option);
}

int add_format_spec(char *option)
{
	int spec = optarg[0];

	if (!valid_spec(spec)) {
		fprintf(stderr,"Bad format specifier %c\n", spec);
		return 1;
	}
	if (optarg[1] != ',') {
		fprintf(stderr,"Bad format specifier - need ',' %s\n", option);
		return 1;
	}
	option += 2;
	if (*option == '\0') {
		fprintf(stderr,"Bad format specifier - need fmt %s\n", option);
		return 1;
	}

	/*
	 * Set both merges (front and back)
	 */
	if (spec == 'M') {
		override_format['B'] = strdup(option);
		override_format['M'] = strdup(option);
	} else
		override_format[spec] = strdup(option);

	return 0;
}

static inline void fill_rwbs(char *rwbs, struct blk_io_trace *t)
{
	int w = t->action & BLK_TC_ACT(BLK_TC_WRITE);
	int a = t->action & BLK_TC_ACT(BLK_TC_AHEAD);
	int b = t->action & BLK_TC_ACT(BLK_TC_BARRIER);
	int s = t->action & BLK_TC_ACT(BLK_TC_SYNC);
	int i = 0;

	if (w)
		rwbs[i++] = 'W';
	else
		rwbs[i++] = 'R';
	if (a)
		rwbs[i++] = 'A';
	if (b)
		rwbs[i++] = 'B';
	if (s)
		rwbs[i++] = 'S';

	rwbs[i] = '\0';
}

static inline int pdu_rest_is_zero(unsigned char *pdu, int len)
{
	static char zero[4096];

	return !memcmp(pdu, zero, len);
}

static char *dump_pdu(unsigned char *pdu_buf, int pdu_len)
{
	static char p[4096];
	int i, len;

	if (!pdu_buf || !pdu_len)
		return NULL;

	for (len = 0, i = 0; i < pdu_len; i++) {
		if (i)
			len += sprintf(p + len, " ");

		len += sprintf(p + len, "%02x", pdu_buf[i]);

		/*
		 * usually dump for cdb dumps where we can see lots of
		 * zeroes, stop when the rest is just zeroes and indicate
		 * so with a .. appended
		 */
		if (!pdu_buf[i] && pdu_rest_is_zero(pdu_buf + i, pdu_len - i)) {
			sprintf(p + len, " ..");
			break;
		}
	}

	return p;
}

#define pdu_start(t)	(((void *) (t) + sizeof(struct blk_io_trace)))

static unsigned int get_pdu_int(struct blk_io_trace *t)
{
	__u64 *val = pdu_start(t);

	return be64_to_cpu(*val);
}

static void get_pdu_remap(struct blk_io_trace *t, struct blk_io_trace_remap *r)
{
	struct blk_io_trace_remap *__r = pdu_start(t);
	__u64 sector = __r->sector;

	r->device = be32_to_cpu(__r->device);
	r->sector = be64_to_cpu(sector);
}

static void print_field(char *act, struct per_cpu_info *pci,
			struct blk_io_trace *t, unsigned long long elapsed,
			int pdu_len, unsigned char *pdu_buf, char field,
			int minus, int has_w, int width)
{
	char format[64];

	if (has_w) {
		if (minus)
			sprintf(format, "%%-%d", width);
		else
			sprintf(format, "%%%d", width);
	} else
		sprintf(format, "%%");

	switch (field) {
	case 'a':
		fprintf(ofp, strcat(format, "s"), act);
		break;
	case 'c':
		fprintf(ofp, strcat(format, "d"), pci->cpu);
		break;
	case 'C': {
		char *name = find_process_name(t->pid);

		fprintf(ofp, strcat(format, "s"), name);
		break;
	}
	case 'd': {
		char rwbs[4];

		fill_rwbs(rwbs, t);
		fprintf(ofp, strcat(format, "s"), rwbs);
		break;
	}
	case 'D':	/* format width ignored */
		fprintf(ofp,"%3d,%-3d", MAJOR(t->device), MINOR(t->device));
		break;
	case 'e':
		fprintf(ofp, strcat(format, "d"), t->error);
		break;
	case 'M':
		fprintf(ofp, strcat(format, "d"), MAJOR(t->device));
		break;
	case 'm':
		fprintf(ofp, strcat(format, "d"), MINOR(t->device));
		break;
	case 'n':
		fprintf(ofp, strcat(format, "u"), t_sec(t));
		break;
	case 'N':
		fprintf(ofp, strcat(format, "u"), t->bytes);
		break;
	case 'p':
		fprintf(ofp, strcat(format, "u"), t->pid);
		break;
	case 'P': { /* format width ignored */
		char *p = dump_pdu(pdu_buf, pdu_len);
		if (p)
			fprintf(ofp, "%s", p);
		break;
	}
	case 's':
		fprintf(ofp, strcat(format, "ld"), t->sequence);
		break;
	case 'S':
		fprintf(ofp, strcat(format, "lu"), t->sector);
		break;
	case 't':
		sprintf(format, "%%0%dlu", has_w ? width : 9);
		fprintf(ofp, format, NANO_SECONDS(t->time));
		break;
	case 'T':
		fprintf(ofp, strcat(format, "d"), SECONDS(t->time));
		break;
	case 'u':
		if (elapsed == -1ULL) {
			fprintf(stderr, "Expecting elapsed value\n");
			exit(1);
		}
		fprintf(ofp, strcat(format, "llu"), elapsed / 1000);
		break;
	case 'U': {
		fprintf(ofp, strcat(format, "u"), get_pdu_int(t));
		break;
	}
	default:
		fprintf(ofp,strcat(format, "c"), field);
		break;
	}
}

static char *parse_field(char *act, struct per_cpu_info *pci,
			 struct blk_io_trace *t, unsigned long long elapsed,
			 int pdu_len, unsigned char *pdu_buf,
			 char *master_format)
{
	int minus = 0;
	int has_w = 0;
	int width = 0;
	char *p = master_format;

	if (*p == '-') {
		minus = 1;
		p++;
	}
	if (isdigit(*p)) {
		has_w = 1;
		do {
			width = (width * 10) + (*p++ - '0');
		} while ((*p) && (isdigit(*p)));
	}
	if (*p) {
		print_field(act, pci, t, elapsed, pdu_len, pdu_buf, *p++,
			    minus, has_w, width);
	}
	return p;
}

static void process_default(char *act, struct per_cpu_info *pci,
			    struct blk_io_trace *t, unsigned long long elapsed,
			    int pdu_len, unsigned char *pdu_buf)
{
	char rwbs[4];
	char *name;

	fill_rwbs(rwbs, t);

	/*
	 * The header is always the same
	 */
	fprintf(ofp, "%3d,%-3d %2d %8d %5d.%09lu %5u %2s %3s ",
		MAJOR(t->device), MINOR(t->device), pci->cpu, t->sequence,
		(int) SECONDS(t->time), (unsigned long) NANO_SECONDS(t->time),
		t->pid, act, rwbs);

	name = find_process_name(t->pid);

	switch (act[0]) {
	case 'R':	/* Requeue */
	case 'C': 	/* Complete */
		if (t->action & BLK_TC_ACT(BLK_TC_PC)) {
			char *p = dump_pdu(pdu_buf, pdu_len);
			if (p)
				fprintf(ofp, "(%s) ", p);
			fprintf(ofp, "[%d]\n", t->error);
		} else {
			if (elapsed != -1ULL) {
				fprintf(ofp, "%llu + %u (%8llu) [%d]\n",
					(unsigned long long) t->sector,
					t_sec(t), elapsed, t->error);
			} else {
				fprintf(ofp, "%llu + %u [%d]\n",
					(unsigned long long) t->sector,
					t_sec(t), t->error);
			}
		}
		break;

	case 'D': 	/* Issue */
	case 'I': 	/* Insert */
	case 'Q': 	/* Queue */
	case 'W':	/* Bounce */
		if (t->action & BLK_TC_ACT(BLK_TC_PC)) {
			char *p;
			fprintf(ofp, "%u ", t->bytes);
			p = dump_pdu(pdu_buf, pdu_len);
			if (p)
				fprintf(ofp, "(%s) ", p);
			fprintf(ofp, "[%s]\n", name);
		} else {
			if (elapsed != -1ULL) {
				fprintf(ofp, "%llu + %u (%8llu) [%s]\n",
					(unsigned long long) t->sector,
					t_sec(t), elapsed, name);
			} else {
				fprintf(ofp, "%llu + %u [%s]\n",
					(unsigned long long) t->sector,
					t_sec(t), name);
			}
		}
		break;

	case 'B':	/* Back merge */
	case 'F':	/* Front merge */
	case 'M':	/* Front or back merge */
	case 'G':	/* Get request */
	case 'S':	/* Sleep request */
		fprintf(ofp, "%llu + %u [%s]\n", (unsigned long long) t->sector,
			t_sec(t), name);
		break;

	case 'P':	/* Plug */
		fprintf(ofp, "[%s]\n", name);
		break;

	case 'U':	/* Unplug IO */
	case 'T': 	/* Unplug timer */
		fprintf(ofp, "[%s] %u\n", name, get_pdu_int(t));
		break;

	case 'A': {	/* remap */
		struct blk_io_trace_remap r;

		get_pdu_remap(t, &r);
		fprintf(ofp, "%llu + %u <- (%d,%d) %llu\n",
			(unsigned long long) t->sector, t_sec(t),
			MAJOR(r.device), MINOR(r.device),
			(unsigned long long) r.sector);
		break;
	}
		
	case 'X': 	/* Split */
		fprintf(ofp, "%llu / %u [%s]\n", (unsigned long long) t->sector,
			get_pdu_int(t), name);
		break;

	default:
		fprintf(stderr, "Unknown action %c\n", act[0]);
		break;
	}

}

void process_fmt(char *act, struct per_cpu_info *pci, struct blk_io_trace *t,
		 unsigned long long elapsed, int pdu_len,
		 unsigned char *pdu_buf)
{
	char *p = override_format[(int) *act];

	if (!p) {
		process_default(act, pci, t, elapsed, pdu_len, pdu_buf);
		return;
	}

	while (*p) {
		switch (*p) {
		case '%': 	/* Field specifier */
			p++;
			if (*p == '%')
				fprintf(ofp, "%c", *p++);
			else if (!*p)
				fprintf(ofp, "%c", '%');
			else
				p = parse_field(act, pci, t, elapsed,
						pdu_len, pdu_buf, p);
			break;
		case '\\': {	/* escape */
			switch (p[1]) {
			case 'b': fprintf(ofp, "\b"); break;
			case 'n': fprintf(ofp, "\n"); break;
			case 'r': fprintf(ofp, "\r"); break;
			case 't': fprintf(ofp, "\t"); break;
			default:
				fprintf(stderr,	
					"Invalid escape char in format %c\n",
					p[1]);
				exit(1);
				/*NOTREACHED*/
			}
			p += 2;
			break;
		}
		default:
			fprintf(ofp, "%c", *p++);
			break;
		}
	}
}
Commit	Line	Data
71d5d4c9 JA	1	/*
	2	* This file contains format parsing code for blkparse, allowing you to
	3	* customize the individual action format and generel output format.
	4	*/
	5	#include <stdio.h>
	6	#include <string.h>
	7	#include <stdlib.h>
	8	#include <unistd.h>
	9	#include <ctype.h>
	10
	11	#include "blktrace.h"
	12
a8f30e64	13	#define VALID_SPECS "ABCDFGMPQRSTUWX"
71d5d4c9 JA	14
	15	#define HEADER "%D %2c %8s %5T.%9t %5p %2a %3d "
	16
	17	static char *override_format[256];
	18
	19	static inline int valid_spec(int spec)
	20	{
	21	return strchr(VALID_SPECS, spec) != NULL;
	22	}
	23
e820abd7	24	void set_all_format_specs(char *option)
71d5d4c9 JA	25	{
	26	char *p;
	27
	28	for (p = VALID_SPECS; *p; p++)
	29	if (override_format[(int)(*p)] == NULL)
e820abd7	30	override_format[(int)(*p)] = strdup(option);
71d5d4c9 JA	31	}
71d5d4c9 JA	32
e820abd7	33	int add_format_spec(char *option)
71d5d4c9 JA	34	{
	35	int spec = optarg[0];
	36
	37	if (!valid_spec(spec)) {
	38	fprintf(stderr,"Bad format specifier %c\n", spec);
	39	return 1;
	40	}
	41	if (optarg[1] != ',') {
e820abd7	42	fprintf(stderr,"Bad format specifier - need ',' %s\n", option);
71d5d4c9 JA	43	return 1;
71d5d4c9 JA	44	}
e820abd7 JA	45	option += 2;
	46	if (*option == '\0') {
	47	fprintf(stderr,"Bad format specifier - need fmt %s\n", option);
71d5d4c9 JA	48	return 1;
	49	}
	50
	51	/*
	52	* Set both merges (front and back)
	53	*/
	54	if (spec == 'M') {
e820abd7 JA	55	override_format['B'] = strdup(option);
e820abd7 JA	56	override_format['M'] = strdup(option);
71d5d4c9	57	} else
e820abd7	58	override_format[spec] = strdup(option);
71d5d4c9 JA	59
	60	return 0;
	61	}
	62
768277cc JA	63	static inline void fill_rwbs(char rwbs, struct blk_io_trace t)
	64	{
	65	int w = t->action & BLK_TC_ACT(BLK_TC_WRITE);
f86990ed	66	int a = t->action & BLK_TC_ACT(BLK_TC_AHEAD);
768277cc JA	67	int b = t->action & BLK_TC_ACT(BLK_TC_BARRIER);
	68	int s = t->action & BLK_TC_ACT(BLK_TC_SYNC);
	69	int i = 0;
	70
	71	if (w)
	72	rwbs[i++] = 'W';
	73	else
	74	rwbs[i++] = 'R';
f86990ed NS	75	if (a)
f86990ed NS	76	rwbs[i++] = 'A';
768277cc JA	77	if (b)
	78	rwbs[i++] = 'B';
	79	if (s)
	80	rwbs[i++] = 'S';
	81
	82	rwbs[i] = '\0';
	83	}
	84
63756b50	85	static inline int pdu_rest_is_zero(unsigned char *pdu, int len)
1d6376a5	86	{
63756b50	87	static char zero[4096];
1d6376a5	88
63756b50	89	return !memcmp(pdu, zero, len);
1d6376a5 JA	90	}
1d6376a5 JA	91
768277cc JA	92	static char dump_pdu(unsigned char pdu_buf, int pdu_len)
	93	{
	94	static char p[4096];
	95	int i, len;
	96
	97	if (!pdu_buf \|\| !pdu_len)
	98	return NULL;
	99
	100	for (len = 0, i = 0; i < pdu_len; i++) {
	101	if (i)
	102	len += sprintf(p + len, " ");
	103
	104	len += sprintf(p + len, "%02x", pdu_buf[i]);
1d6376a5 JA	105
	106	/*
	107	* usually dump for cdb dumps where we can see lots of
	108	* zeroes, stop when the rest is just zeroes and indicate
	109	* so with a .. appended
	110	*/
	111	if (!pdu_buf[i] && pdu_rest_is_zero(pdu_buf + i, pdu_len - i)) {
	112	sprintf(p + len, " ..");
	113	break;
	114	}
768277cc JA	115	}
	116
	117	return p;
	118	}
	119
a8f30e64 JA	120	#define pdu_start(t) (((void *) (t) + sizeof(struct blk_io_trace)))
a8f30e64 JA	121
768277cc JA	122	static unsigned int get_pdu_int(struct blk_io_trace *t)
768277cc JA	123	{
a8f30e64	124	__u64 *val = pdu_start(t);
768277cc JA	125
	126	return be64_to_cpu(*val);
	127	}
	128
a8f30e64 JA	129	static void get_pdu_remap(struct blk_io_trace t, struct blk_io_trace_remap r)
	130	{
	131	struct blk_io_trace_remap *__r = pdu_start(t);
663af819	132	__u64 sector = __r->sector;
a8f30e64 JA	133
a8f30e64 JA	134	r->device = be32_to_cpu(__r->device);
663af819	135	r->sector = be64_to_cpu(sector);
a8f30e64 JA	136	}
a8f30e64 JA	137
71d5d4c9 JA	138	static void print_field(char act, struct per_cpu_info pci,
	139	struct blk_io_trace *t, unsigned long long elapsed,
	140	int pdu_len, unsigned char *pdu_buf, char field,
	141	int minus, int has_w, int width)
	142	{
	143	char format[64];
	144
	145	if (has_w) {
	146	if (minus)
	147	sprintf(format, "%%-%d", width);
	148	else
	149	sprintf(format, "%%%d", width);
	150	} else
	151	sprintf(format, "%%");
	152
	153	switch (field) {
	154	case 'a':
	155	fprintf(ofp, strcat(format, "s"), act);
	156	break;
	157	case 'c':
	158	fprintf(ofp, strcat(format, "d"), pci->cpu);
	159	break;
bfc70ad5 JA	160	case 'C': {
	161	char *name = find_process_name(t->pid);
	162
	163	fprintf(ofp, strcat(format, "s"), name);
71d5d4c9	164	break;
bfc70ad5	165	}
71d5d4c9 JA	166	case 'd': {
71d5d4c9 JA	167	char rwbs[4];
768277cc JA	168
768277cc JA	169	fill_rwbs(rwbs, t);
71d5d4c9 JA	170	fprintf(ofp, strcat(format, "s"), rwbs);
	171	break;
	172	}
	173	case 'D': /* format width ignored */
	174	fprintf(ofp,"%3d,%-3d", MAJOR(t->device), MINOR(t->device));
	175	break;
	176	case 'e':
	177	fprintf(ofp, strcat(format, "d"), t->error);
	178	break;
	179	case 'M':
	180	fprintf(ofp, strcat(format, "d"), MAJOR(t->device));
	181	break;
	182	case 'm':
	183	fprintf(ofp, strcat(format, "d"), MINOR(t->device));
	184	break;
	185	case 'n':
ae957cbc	186	fprintf(ofp, strcat(format, "u"), t_sec(t));
71d5d4c9	187	break;
1c8ca7b5 JA	188	case 'N':
	189	fprintf(ofp, strcat(format, "u"), t->bytes);
	190	break;
71d5d4c9 JA	191	case 'p':
	192	fprintf(ofp, strcat(format, "u"), t->pid);
	193	break;
768277cc JA	194	case 'P': { /* format width ignored */
	195	char *p = dump_pdu(pdu_buf, pdu_len);
	196	if (p)
	197	fprintf(ofp, "%s", p);
71d5d4c9	198	break;
768277cc	199	}
71d5d4c9 JA	200	case 's':
	201	fprintf(ofp, strcat(format, "ld"), t->sequence);
	202	break;
	203	case 'S':
	204	fprintf(ofp, strcat(format, "lu"), t->sector);
	205	break;
	206	case 't':
	207	sprintf(format, "%%0%dlu", has_w ? width : 9);
	208	fprintf(ofp, format, NANO_SECONDS(t->time));
	209	break;
	210	case 'T':
	211	fprintf(ofp, strcat(format, "d"), SECONDS(t->time));
	212	break;
	213	case 'u':
	214	if (elapsed == -1ULL) {
	215	fprintf(stderr, "Expecting elapsed value\n");
	216	exit(1);
	217	}
	218	fprintf(ofp, strcat(format, "llu"), elapsed / 1000);
	219	break;
	220	case 'U': {
768277cc	221	fprintf(ofp, strcat(format, "u"), get_pdu_int(t));
71d5d4c9 JA	222	break;
	223	}
	224	default:
	225	fprintf(ofp,strcat(format, "c"), field);
	226	break;
	227	}
	228	}
	229
768277cc JA	230	static char parse_field(char act, struct per_cpu_info *pci,
	231	struct blk_io_trace *t, unsigned long long elapsed,
	232	int pdu_len, unsigned char *pdu_buf,
71d5d4c9 JA	233	char *master_format)
	234	{
	235	int minus = 0;
	236	int has_w = 0;
	237	int width = 0;
	238	char *p = master_format;
	239
	240	if (*p == '-') {
	241	minus = 1;
	242	p++;
	243	}
	244	if (isdigit(*p)) {
	245	has_w = 1;
	246	do {
	247	width = (width * 10) + (*p++ - '0');
	248	} while ((p) && (isdigit(p)));
	249	}
	250	if (*p) {
	251	print_field(act, pci, t, elapsed, pdu_len, pdu_buf, *p++,
	252	minus, has_w, width);
	253	}
	254	return p;
	255	}
	256
768277cc JA	257	static void process_default(char act, struct per_cpu_info pci,
	258	struct blk_io_trace *t, unsigned long long elapsed,
	259	int pdu_len, unsigned char *pdu_buf)
71d5d4c9	260	{
768277cc	261	char rwbs[4];
bfc70ad5	262	char *name;
71d5d4c9	263
768277cc JA	264	fill_rwbs(rwbs, t);
	265
	266	/*
	267	* The header is always the same
	268	*/
	269	fprintf(ofp, "%3d,%-3d %2d %8d %5d.%09lu %5u %2s %3s ",
	270	MAJOR(t->device), MINOR(t->device), pci->cpu, t->sequence,
	271	(int) SECONDS(t->time), (unsigned long) NANO_SECONDS(t->time),
	272	t->pid, act, rwbs);
71d5d4c9	273
bfc70ad5 JA	274	name = find_process_name(t->pid);
bfc70ad5 JA	275
768277cc	276	switch (act[0]) {
80c53608	277	case 'R': /* Requeue */
71d5d4c9	278	case 'C': /* Complete */
768277cc JA	279	if (t->action & BLK_TC_ACT(BLK_TC_PC)) {
	280	char *p = dump_pdu(pdu_buf, pdu_len);
	281	if (p)
	282	fprintf(ofp, "(%s) ", p);
	283	fprintf(ofp, "[%d]\n", t->error);
	284	} else {
71d5d4c9	285	if (elapsed != -1ULL) {
768277cc JA	286	fprintf(ofp, "%llu + %u (%8llu) [%d]\n",
768277cc JA	287	(unsigned long long) t->sector,
ae957cbc	288	t_sec(t), elapsed, t->error);
768277cc JA	289	} else {
	290	fprintf(ofp, "%llu + %u [%d]\n",
	291	(unsigned long long) t->sector,
ae957cbc	292	t_sec(t), t->error);
768277cc	293	}
71d5d4c9	294	}
71d5d4c9 JA	295	break;
	296
	297	case 'D': /* Issue */
71d5d4c9	298	case 'I': /* Insert */
71d5d4c9 JA	299	case 'Q': /* Queue */
71d5d4c9 JA	300	case 'W': /* Bounce */
768277cc JA	301	if (t->action & BLK_TC_ACT(BLK_TC_PC)) {
768277cc JA	302	char *p;
1c8ca7b5	303	fprintf(ofp, "%u ", t->bytes);
768277cc JA	304	p = dump_pdu(pdu_buf, pdu_len);
	305	if (p)
	306	fprintf(ofp, "(%s) ", p);
bfc70ad5	307	fprintf(ofp, "[%s]\n", name);
768277cc JA	308	} else {
	309	if (elapsed != -1ULL) {
	310	fprintf(ofp, "%llu + %u (%8llu) [%s]\n",
	311	(unsigned long long) t->sector,
bfc70ad5	312	t_sec(t), elapsed, name);
768277cc JA	313	} else {
	314	fprintf(ofp, "%llu + %u [%s]\n",
	315	(unsigned long long) t->sector,
bfc70ad5	316	t_sec(t), name);
768277cc JA	317	}
768277cc JA	318	}
71d5d4c9 JA	319	break;
	320
	321	case 'B': /* Back merge */
	322	case 'F': /* Front merge */
	323	case 'M': /* Front or back merge */
768277cc JA	324	case 'G': /* Get request */
	325	case 'S': /* Sleep request */
	326	fprintf(ofp, "%llu + %u [%s]\n", (unsigned long long) t->sector,
bfc70ad5	327	t_sec(t), name);
71d5d4c9 JA	328	break;
	329
	330	case 'P': /* Plug */
bfc70ad5	331	fprintf(ofp, "[%s]\n", name);
71d5d4c9 JA	332	break;
	333
	334	case 'U': /* Unplug IO */
a8f30e64	335	case 'T': /* Unplug timer */
bfc70ad5	336	fprintf(ofp, "[%s] %u\n", name, get_pdu_int(t));
71d5d4c9 JA	337	break;
71d5d4c9 JA	338
a8f30e64 JA	339	case 'A': { /* remap */
	340	struct blk_io_trace_remap r;
	341
	342	get_pdu_remap(t, &r);
	343	fprintf(ofp, "%llu + %u <- (%d,%d) %llu\n",
e9f883ca	344	(unsigned long long) t->sector, t_sec(t),
a8f30e64	345	MAJOR(r.device), MINOR(r.device),
e9f883ca	346	(unsigned long long) r.sector);
a8f30e64 JA	347	break;
	348	}
	349
71d5d4c9	350	case 'X': /* Split */
768277cc	351	fprintf(ofp, "%llu / %u [%s]\n", (unsigned long long) t->sector,
bfc70ad5	352	get_pdu_int(t), name);
71d5d4c9 JA	353	break;
	354
	355	default:
768277cc JA	356	fprintf(stderr, "Unknown action %c\n", act[0]);
768277cc JA	357	break;
71d5d4c9 JA	358	}
71d5d4c9 JA	359
71d5d4c9 JA	360	}
	361
	362	void process_fmt(char act, struct per_cpu_info pci, struct blk_io_trace *t,
	363	unsigned long long elapsed, int pdu_len,
	364	unsigned char *pdu_buf)
	365	{
768277cc JA	366	char p = override_format[(int) act];
	367
	368	if (!p) {
	369	process_default(act, pci, t, elapsed, pdu_len, pdu_buf);
	370	return;
	371	}
71d5d4c9 JA	372
	373	while (*p) {
	374	switch (*p) {
	375	case '%': /* Field specifier */
	376	p++;
	377	if (*p == '%')
	378	fprintf(ofp, "%c", *p++);
	379	else if (!*p)
	380	fprintf(ofp, "%c", '%');
	381	else
	382	p = parse_field(act, pci, t, elapsed,
	383	pdu_len, pdu_buf, p);
	384	break;
	385	case '\\': { /* escape */
	386	switch (p[1]) {
	387	case 'b': fprintf(ofp, "\b"); break;
	388	case 'n': fprintf(ofp, "\n"); break;
	389	case 'r': fprintf(ofp, "\r"); break;
	390	case 't': fprintf(ofp, "\t"); break;
	391	default:
	392	fprintf(stderr,
	393	"Invalid escape char in format %c\n",
	394	p[1]);
	395	exit(1);
	396	/NOTREACHED/
	397	}
	398	p += 2;
	399	break;
	400	}
	401	default:
	402	fprintf(ofp, "%c", *p++);
	403	break;
	404	}
	405	}
	406	}
	407
	408