marfrit/libva-v4l2-request-fourier
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src/utils.c: tee request_log() to /tmp/libva-fourier.log

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Sandboxed processes (Chromium GPU process etc.) redirect stderr, so
request_log() output never reaches our test harness. Add a lazy-open
append to /tmp/libva-fourier.log so we can capture diagnostic logging
regardless of process sandboxing.

Will revert before final.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Markus Fritsche
2026-04-25 21:59:57 +00:00
parent 1458622729
commit ac674b84ec
1 changed files with 14 additions and 0 deletions
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src/utils.c
+14
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@@ -33,10 +33,24 @@
void request_log(const char *format, ...) void request_log(const char *format, ...)
{ {
va_list arguments; va_list arguments;
static FILE *trace_fp;
fprintf(stderr, "%s: ", V4L2_REQUEST_STR_VENDOR); fprintf(stderr, "%s: ", V4L2_REQUEST_STR_VENDOR);
va_start(arguments, format); va_start(arguments, format);
vfprintf(stderr, format, arguments); vfprintf(stderr, format, arguments);
va_end(arguments); va_end(arguments);
/* Fourier-local: also tee to /tmp/libva-fourier.log so messages are
* visible from sandboxed GPU processes (Chromium etc.) where stderr
* is redirected. Append-mode, lazy-open. */
if (trace_fp == NULL)
trace_fp = fopen("/tmp/libva-fourier.log", "a");
if (trace_fp != NULL) {
fprintf(trace_fp, "%s: ", V4L2_REQUEST_STR_VENDOR);
va_start(arguments, format);
vfprintf(trace_fp, format, arguments);
va_end(arguments);
fflush(trace_fp);
}
} }