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error-decode: Operate as a pipe and accept input from stdin

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Useful for feeding in compressed files from bugzilla:

$ bzcat /tmp/i915_error_state.bz | intel_error_decode | less

Next step would be to use gzfopen or bzfopen to automagically handle
compressed files...

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-12-01 21:51:59 +00:00
parent aa0a346deb
commit a3a78632bd
1 changed files with 31 additions and 25 deletions
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56
tools/intel_error_decode.c
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@ -44,6 +44,7 @@
#include <stdlib.h> #include <stdlib.h>
#include <stdarg.h> #include <stdarg.h>
#include <string.h> #include <string.h>
#include <unistd.h>
#include <inttypes.h> #include <inttypes.h>
#include <errno.h> #include <errno.h>
#include <sys/stat.h> #include <sys/stat.h>
@ -209,9 +210,8 @@ print_pgtbl_err(unsigned int reg, unsigned int devid)
} }
static void static void
read_data_file (const char * filename) read_data_file (FILE *file)
{ {
FILE *file;
int devid = PCI_CHIP_I855_GM; int devid = PCI_CHIP_I855_GM;
uint32_t *data = NULL; uint32_t *data = NULL;
int data_size = 0, count = 0, line_number = 0, matched; int data_size = 0, count = 0, line_number = 0, matched;
@ -222,13 +222,6 @@ read_data_file (const char * filename)
char *buffer_type[2] = { "ringbuffer", "batchbuffer" }; char *buffer_type[2] = { "ringbuffer", "batchbuffer" };
int is_batch = 1; int is_batch = 1;
file = fopen (filename, "r");
if (file == NULL) {
fprintf (stderr, "Failed to open %s: %s\n",
filename, strerror (errno));
exit (1);
}
while (getline (&line, &line_size, file) > 0) { while (getline (&line, &line_size, file) > 0) {
line_number++; line_number++;
@ -306,14 +299,14 @@ read_data_file (const char * filename)
free (data); free (data);
free (line); free (line);
fclose (file);
} }
int int
main (int argc, char *argv[]) main (int argc, char *argv[])
{ {
FILE *file;
const char *path; const char *path;
char *filename;
struct stat st; struct stat st;
int err; int err;
@ -334,17 +327,22 @@ main (int argc, char *argv[])
} }
if (argc == 1) { if (argc == 1) {
path = "/debug/dri/0"; if (isatty(1)) {
err = stat (path, &st); path = "/debug/dri/0";
if (err != 0) {
path = "/sys/kernel/debug/dri/0";
err = stat (path, &st); err = stat (path, &st);
if (err != 0) { if (err != 0) {
errx(1, path = "/sys/kernel/debug/dri/0";
"Couldn't find i915 debugfs directory.\n\n" err = stat (path, &st);
"Is debugfs mounted? You might try mounting it with a command such as:\n\n" if (err != 0) {
"\tsudo mount -t debugfs debugfs /sys/kernel/debug\n"); errx(1,
"Couldn't find i915 debugfs directory.\n\n"
"Is debugfs mounted? You might try mounting it with a command such as:\n\n"
"\tsudo mount -t debugfs debugfs /sys/kernel/debug\n");
}
} }
} else {
read_data_file(stdin);
exit(0);
} }
} else { } else {
path = argv[1]; path = argv[1];
@ -356,15 +354,23 @@ main (int argc, char *argv[])
} }
} }
if (S_ISDIR (st.st_mode)) { if (S_ISDIR (st.st_mode))
char *filename;
asprintf (&filename, "%s/i915_error_state", path); asprintf (&filename, "%s/i915_error_state", path);
read_data_file (filename); else
free (filename); filename = (char *) path;
file = fopen(filename, "r");
if (file) {
read_data_file (file);
fclose (file);
} else { } else {
read_data_file (path); fprintf (stderr, "Failed to open %s: %s\n",
filename, strerror (errno));
exit (1);
} }
if (filename != path)
free (filename);
return 0; return 0;
} }