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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Renaud=20M=C3=A9trich?= <rmetrich@redhat.com>
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Date: Fri, 29 Nov 2019 11:02:00 +0100
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Subject: [PATCH] grub_file_* instrumentation (new 'file' debug tag)
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Renaud Métrich <rmetrich@redhat.com>
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---
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grub-core/kern/file.c | 14 ++++++++++++++
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1 file changed, 14 insertions(+)
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diff --git a/grub-core/kern/file.c b/grub-core/kern/file.c
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index 5b58f45cfd..ec10e54fc0 100644
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--- a/grub-core/kern/file.c
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+++ b/grub-core/kern/file.c
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@@ -66,6 +66,8 @@ grub_file_open (const char *name, enum grub_file_type type)
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const char *file_name;
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grub_file_filter_id_t filter;
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+ grub_dprintf ("file", "Opening `%s' ...\n", name);
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+
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/* Reset grub_errno before we start */
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grub_errno = GRUB_ERR_NONE;
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@@ -131,6 +133,8 @@ grub_file_open (const char *name, enum grub_file_type type)
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if (!file)
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grub_file_close (last_file);
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+ grub_dprintf ("file", "Opening `%s' succeeded.\n", name);
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+
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return file;
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fail:
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@@ -141,6 +145,8 @@ grub_file_open (const char *name, enum grub_file_type type)
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grub_free (file);
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+ grub_dprintf ("file", "Opening `%s' failed.\n", name);
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+
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return 0;
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}
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@@ -172,6 +178,7 @@ grub_file_read (grub_file_t file, void *buf, grub_size_t len)
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if (len == 0)
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return 0;
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+
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read_hook = file->read_hook;
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read_hook_data = file->read_hook_data;
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if (!file->read_hook)
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@@ -192,11 +199,18 @@ grub_file_read (grub_file_t file, void *buf, grub_size_t len)
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grub_err_t
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grub_file_close (grub_file_t file)
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{
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+ grub_dprintf ("file", "Closing `%s' ...\n", file->name);
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if (file->fs->fs_close)
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(file->fs->fs_close) (file);
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if (file->device)
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grub_device_close (file->device);
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+
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+ if (grub_errno == GRUB_ERR_NONE)
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+ grub_dprintf ("file", "Closing `%s' succeeded.\n", file->name);
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+ else
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+ grub_dprintf ("file", "Closing `%s' failed with %d.\n", file->name, grub_errno);
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+
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grub_free (file->name);
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grub_free (file);
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return grub_errno;
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