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Add a quiet mode to ktrdump(1): if the "-q" flag is used, don't print

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the pretty text header on top of the output.  Simplifies feeding the
results of tracing into a script for mechanical processing.
This commit is contained in:
Robert Watson 2004-05-21 21:24:58 +00:00
parent dd6cf019f3
commit 7ddc893717
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=129559
2 changed files with 30 additions and 21 deletions
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4
usr.bin/ktrdump/ktrdump.8
View File

@ -33,7 +33,7 @@
.Nd print kernel ktr trace buffer
.Sh SYNOPSIS
.Nm
.Op Fl cft
.Op Fl cfqt
.Op Fl e Ar execfile
.Op Fl m Ar corefile
.Op Fl o Ar outfile
@ -48,6 +48,8 @@ The following options are available:
Print the CPU number that each entry was logged from.
.It Fl f
Print the file and line number that each entry was logged from.
.It Fl q
Quiet mode; don't print the column header.
.It Fl t
Print the timestamp for each entry.
.It Fl e Ar execfile

47
usr.bin/ktrdump/ktrdump.c
View File

@ -45,7 +45,7 @@ __FBSDID("$FreeBSD$");
#define SBUFLEN 128
#define USAGE \
"usage: ktrdump [-c] [-f] [-t] [-e execfile] [-i ktrfile ] [-m corefile] [-o outfile]"
"usage: ktrdump [-c] [-f] [-q] [-t] [-e execfile] [-i ktrfile ] [-m corefile] [-o outfile]"
extern char *optarg;
extern int optind;
@ -64,6 +64,7 @@ static int cflag;
static int eflag;
static int fflag;
static int mflag;
static int qflag;
static int tflag;
static int iflag;
@ -100,7 +101,7 @@ main(int ac, char **av)
* Parse commandline arguments.
*/
out = stdout;
while ((c = getopt(ac, av, "cfte:i:m:o:")) != -1)
while ((c = getopt(ac, av, "cfqte:i:m:o:")) != -1)
switch (c) {
case 'c':
cflag = 1;
@ -129,6 +130,9 @@ main(int ac, char **av)
if ((out = fopen(optarg, "w")) == NULL)
err(1, "%s", optarg);
break;
case 'q':
qflag++;
break;
case 't':
tflag = 1;
break;
@ -176,25 +180,28 @@ main(int ac, char **av)
/*
* Print a nice header.
*/
fprintf(out, "%-6s ", "index");
if (cflag)
fprintf(out, "%-3s ", "cpu");
if (tflag)
fprintf(out, "%-16s ", "timestamp");
if (fflag)
fprintf(out, "%-40s ", "file and line");
fprintf(out, "%s", "trace");
fprintf(out, "\n");
if (!qflag) {
fprintf(out, "%-6s ", "index");
if (cflag)
fprintf(out, "%-3s ", "cpu");
if (tflag)
fprintf(out, "%-16s ", "timestamp");
if (fflag)
fprintf(out, "%-40s ", "file and line");
fprintf(out, "%s", "trace");
fprintf(out, "\n");
fprintf(out, "------ ");
if (cflag)
fprintf(out, "--- ");
if (tflag)
fprintf(out, "---------------- ");
if (fflag)
fprintf(out, "---------------------------------------- ");
fprintf(out, "----- ");
fprintf(out, "\n");
fprintf(out, "------ ");
if (cflag)
fprintf(out, "--- ");
if (tflag)
fprintf(out, "---------------- ");
if (fflag)
fprintf(out,
"---------------------------------------- ");
fprintf(out, "----- ");
fprintf(out, "\n");
}
/*
* Now tear through the trace buffer.