This is a note to let you know that I've just added the patch titled
x86, efi: Allow slash in file path of initrd
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-efi-allow-slash-in-file-path-of-initrd.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From deb94101c4fda22e152c2a311210cf09ae51adf6 Mon Sep 17 00:00:00 2001
From: "Lee, Chun-Yi" <joeyli.kernel@xxxxxxxxx>
Date: Thu, 20 Dec 2012 19:33:22 +0800
Subject: x86, efi: Allow slash in file path of initrd
From: "Lee, Chun-Yi" <joeyli.kernel@xxxxxxxxx>
commit deb94101c4fda22e152c2a311210cf09ae51adf6 upstream.
When initrd file didn't put at the same place with stub kernel, we
need give the file path of initrd, but need use backslash to separate
directory and file. It's not friendly to unix/linux user, and not so
intuitive for bootloader forward paramters to efi stub kernel by
chainloading.
This patch add support to handle_ramdisks for allow slash in file path
of initrd, it convert slash to backlash when parsing path.
In additional, this patch also separates print code of efi_char16_t from
efi_printk, and print out the path/filename of initrd when failed to open
initrd file. It's good for debug and discover typo.
Signed-off-by: Lee, Chun-Yi <jlee@xxxxxxxx>
Cc: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Signed-off-by: Matt Fleming <matt.fleming@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/boot/compressed/eboot.c | 26 +++++++++++++++++++-------
1 file changed, 19 insertions(+), 7 deletions(-)
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -19,23 +19,28 @@
static efi_system_table_t *sys_table;
+static void efi_char16_printk(efi_char16_t *str)
+{
+ struct efi_simple_text_output_protocol *out;
+
+ out = (struct efi_simple_text_output_protocol *)sys_table->con_out;
+ efi_call_phys2(out->output_string, out, str);
+}
+
static void efi_printk(char *str)
{
char *s8;
for (s8 = str; *s8; s8++) {
- struct efi_simple_text_output_protocol *out;
efi_char16_t ch[2] = { 0 };
ch[0] = *s8;
- out = (struct efi_simple_text_output_protocol *)sys_table->con_out;
-
if (*s8 == '\n') {
efi_char16_t nl[2] = { '\r', 0 };
- efi_call_phys2(out->output_string, out, nl);
+ efi_char16_printk(nl);
}
- efi_call_phys2(out->output_string, out, ch);
+ efi_char16_printk(ch);
}
}
@@ -709,7 +714,12 @@ static efi_status_t handle_ramdisks(efi_
if ((u8 *)p >= (u8 *)filename_16 + sizeof(filename_16))
break;
- *p++ = *str++;
+ if (*str == '/') {
+ *p++ = '\\';
+ *str++;
+ } else {
+ *p++ = *str++;
+ }
}
*p = '\0';
@@ -737,7 +747,9 @@ static efi_status_t handle_ramdisks(efi_
status = efi_call_phys5(fh->open, fh, &h, filename_16,
EFI_FILE_MODE_READ, (u64)0);
if (status != EFI_SUCCESS) {
- efi_printk("Failed to open initrd file\n");
+ efi_printk("Failed to open initrd file: ");
+ efi_char16_printk(filename_16);
+ efi_printk("\n");
goto close_handles;
}
Patches currently in stable-queue which might be from joeyli.kernel@xxxxxxxxx are
queue-3.8/x86-efi-allow-slash-in-file-path-of-initrd.patch
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