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vsprintf.c: add GUID printing

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This works (roughly) the same way as linux's, but we currently always
print lower-case (ie. we just keep %pUB and %pUL for compat with linux),
mostly just because that is what uuid_bin_to_str() supports.

  %pUb:   01020304-0506-0708-090a-0b0c0d0e0f10
  %pUl:   04030201-0605-0807-090a-0b0c0d0e0f10

It will be used by a later efi_loader paths for efi variables and for
device-path-to-text protocol, and also quite useful for debug prints
of protocol GUIDs.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Rob Clark 2017-09-09 06:47:42 -04:00 committed by Tom Rini
parent 274325c509
commit 22ada0c8e6
3 changed files with 46 additions and 2 deletions
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1
examples/api/Makefile
View file

@ -35,6 +35,7 @@ EXT_COBJ-y += lib/string.o
EXT_COBJ-y += lib/time.o
EXT_COBJ-y += lib/vsprintf.o
EXT_COBJ-y += lib/charset.o
EXT_COBJ-$(CONFIG_LIB_UUID) += lib/uuid.o
EXT_SOBJ-$(CONFIG_PPC) += arch/powerpc/lib/ppcstring.o
ifeq ($(ARCH),arm)
EXT_SOBJ-$(CONFIG_USE_ARCH_MEMSET) += arch/arm/lib/memset.o

1
include/config_fallbacks.h
View file

@ -58,6 +58,7 @@
#if (CONFIG_IS_ENABLED(PARTITION_UUIDS) || \
CONFIG_IS_ENABLED(EFI_PARTITION) || \
CONFIG_IS_ENABLED(EFI_LOADER) || \
defined(CONFIG_RANDOM_UUID) || \
defined(CONFIG_CMD_UUID) || \
defined(CONFIG_BOOTP_PXE)) && \

46
lib/vsprintf.c
View file

@ -18,6 +18,7 @@
#include <common.h>
#include <charset.h>
#include <uuid.h>
#include <div64.h>
#define noinline __attribute__((noinline))
@ -366,6 +367,40 @@ static char *ip4_addr_string(char *buf, char *end, u8 *addr, int field_width,
}
#endif
#ifdef CONFIG_LIB_UUID
/*
* This works (roughly) the same way as linux's, but we currently always
* print lower-case (ie. we just keep %pUB and %pUL for compat with linux),
* mostly just because that is what uuid_bin_to_str() supports.
*
* %pUb: 01020304-0506-0708-090a-0b0c0d0e0f10
* %pUl: 04030201-0605-0807-090a-0b0c0d0e0f10
*/
static char *uuid_string(char *buf, char *end, u8 *addr, int field_width,
int precision, int flags, const char *fmt)
{
char uuid[UUID_STR_LEN + 1];
int str_format = UUID_STR_FORMAT_STD;
switch (*(++fmt)) {
case 'L':
case 'l':
str_format = UUID_STR_FORMAT_GUID;
break;
case 'B':
case 'b':
/* this is the default */
break;
default:
break;
}
uuid_bin_to_str(addr, uuid, str_format);
return string(buf, end, uuid, field_width, precision, flags);
}
#endif
/*
* Show a '%p' thing. A kernel extension is that the '%p' is followed
* by an extra set of alphanumeric characters that are extended format
@ -399,8 +434,8 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
flags);
#endif
#ifdef CONFIG_CMD_NET
switch (*fmt) {
#ifdef CONFIG_CMD_NET
case 'a':
flags |= SPECIAL | ZEROPAD;
@ -430,8 +465,15 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
precision, flags);
flags &= ~SPECIAL;
break;
}
#endif
#ifdef CONFIG_LIB_UUID
case 'U':
return uuid_string(buf, end, ptr, field_width, precision,
flags, fmt);
#endif
default:
break;
}
flags |= SMALL;
if (field_width == -1) {
field_width = 2*sizeof(void *);