diff options
| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2019-04-29 08:08:43 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-06-07 10:52:30 -0400 |
| commit | 3bad256f5b5afc2ba6b3d30c162cb4b2b39318fd (patch) | |
| tree | d29e96f44d59d67d06db82d2c9ccfc1c0b91f538 /lib/uuid.c | |
| parent | dbbb1c43f26cb28b64df80b72fffbaf2801e8a30 (diff) | |
lib/vsprintf: allow printing upper case GUIDs
In the UEFI context GUIDs are expected to be rendered in upper case.
The patch uses the formerly unused bit 1 of the parameter str_format
of function uuid_bin_to_str() to indicate if we need upper or lower case
output.
Function uuid_string() in vsprint.c is adjusted to correctly set the bit
depending on the print format code.
%pUb: 01020304-0506-0708-090a-0b0c0d0e0f10
%pUB: 01020304-0506-0708-090A-0B0C0D0E0F10
%pUl: 04030201-0605-0807-090a-0b0c0d0e0f10
%pUL: 04030201-0605-0807-090A-0B0C0D0E0F10
Up to this point only a diagnostic message in mount_ubifs() using '%pUB' is
concerned by the change. Further patches are needed to adjust the UEFI
subsystem.
A unit test is provided inside the ut_print command.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'lib/uuid.c')
| -rw-r--r-- | lib/uuid.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/lib/uuid.c b/lib/uuid.c index 2d4d6ef7e4..7d7a2749b6 100644 --- a/lib/uuid.c +++ b/lib/uuid.c @@ -187,9 +187,10 @@ int uuid_str_to_bin(char *uuid_str, unsigned char *uuid_bin, int str_format) /* * uuid_bin_to_str() - convert big endian binary data to string UUID or GUID. * - * @param uuid_bin - pointer to binary data of UUID (big endian) [16B] - * @param uuid_str - pointer to allocated array for output string [37B] - * @str_format - UUID string format: 0 - UUID; 1 - GUID + * @param uuid_bin: pointer to binary data of UUID (big endian) [16B] + * @param uuid_str: pointer to allocated array for output string [37B] + * @str_format: bit 0: 0 - UUID; 1 - GUID + * bit 1: 0 - lower case; 2 - upper case */ void uuid_bin_to_str(unsigned char *uuid_bin, char *uuid_str, int str_format) { @@ -198,6 +199,7 @@ void uuid_bin_to_str(unsigned char *uuid_bin, char *uuid_str, int str_format) const u8 guid_char_order[UUID_BIN_LEN] = {3, 2, 1, 0, 5, 4, 7, 6, 8, 9, 10, 11, 12, 13, 14, 15}; const u8 *char_order; + const char *format; int i; /* @@ -205,13 +207,17 @@ void uuid_bin_to_str(unsigned char *uuid_bin, char *uuid_str, int str_format) * 4B-2B-2B-2B-6B * be be be be be */ - if (str_format == UUID_STR_FORMAT_STD) + if (str_format & UUID_STR_FORMAT_GUID) + char_order = guid_char_order; + else char_order = uuid_char_order; + if (str_format & UUID_STR_UPPER_CASE) + format = "%02X"; else - char_order = guid_char_order; + format = "%02x"; for (i = 0; i < 16; i++) { - sprintf(uuid_str, "%02x", uuid_bin[char_order[i]]); + sprintf(uuid_str, format, uuid_bin[char_order[i]]); uuid_str += 2; switch (i) { case 3: |