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From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH 108/112] lib: uuid: implement uuid/guid_parse
Date: Wed,  3 Jan 2024 19:13:08 +0100	[thread overview]
Message-ID: <20240103181312.409668-109-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20240103181312.409668-1-a.fatoum@pengutronix.de>

We opencode this at least once in EFI code, so import the Linux
definition and start using that instead.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 lib/uuid.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/lib/uuid.c b/lib/uuid.c
index db75be1725bf..c83227c0d1e7 100644
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -8,9 +8,72 @@
 
 #include <linux/uuid.h>
 #include <module.h>
+#include <linux/ctype.h>
 #include <linux/export.h>
 
 const guid_t guid_null;
 EXPORT_SYMBOL(guid_null);
 const uuid_t uuid_null;
 EXPORT_SYMBOL(uuid_null);
+
+const u8 guid_index[16] = {3,2,1,0,5,4,7,6,8,9,10,11,12,13,14,15};
+const u8 uuid_index[16] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
+
+/**
+ * uuid_is_valid - checks if a UUID string is valid
+ * @uuid:	UUID string to check
+ *
+ * Description:
+ * It checks if the UUID string is following the format:
+ *	xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+ *
+ * where x is a hex digit.
+ *
+ * Return: true if input is valid UUID string.
+ */
+bool uuid_is_valid(const char *uuid)
+{
+	unsigned int i;
+
+	for (i = 0; i < UUID_STRING_LEN; i++) {
+		if (i == 8 || i == 13 || i == 18 || i == 23) {
+			if (uuid[i] != '-')
+				return false;
+		} else if (!isxdigit(uuid[i])) {
+			return false;
+		}
+	}
+
+	return true;
+}
+EXPORT_SYMBOL(uuid_is_valid);
+
+static int __uuid_parse(const char *uuid, __u8 b[16], const u8 ei[16])
+{
+	static const u8 si[16] = {0,2,4,6,9,11,14,16,19,21,24,26,28,30,32,34};
+	unsigned int i;
+
+	if (!uuid_is_valid(uuid))
+		return -EINVAL;
+
+	for (i = 0; i < 16; i++) {
+		int hi = hex_to_bin(uuid[si[i] + 0]);
+		int lo = hex_to_bin(uuid[si[i] + 1]);
+
+		b[ei[i]] = (hi << 4) | lo;
+	}
+
+	return 0;
+}
+
+int guid_parse(const char *uuid, guid_t *u)
+{
+	return __uuid_parse(uuid, u->b, guid_index);
+}
+EXPORT_SYMBOL(guid_parse);
+
+int uuid_parse(const char *uuid, uuid_t *u)
+{
+	return __uuid_parse(uuid, u->b, uuid_index);
+}
+EXPORT_SYMBOL(uuid_parse);
-- 
2.39.2




  parent reply	other threads:[~2024-01-03 18:36 UTC|newest]

Thread overview: 134+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-03 18:11 [PATCH 000/112] efi: prepare for ARM64 EFI loader support Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 001/112] string: implement strcmp_ptr and streq_ptr helpers Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 002/112] commands: efiexit: flush console and shutdown barebox Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 003/112] treewide: add errno_set helper for returning positive error code in errno Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 004/112] vsprintf: guard against NULL in UUID %pU Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 005/112] common: add option to poweroff system on failure Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 006/112] boot: print error code when booting fails Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 007/112] common: efi: move directory to top-level Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 008/112] efi: payload: rename CONFIG_EFI_BOOTUP to CONFIG_EFI_PAYLOAD Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 009/112] efi: payload: image: return actual read_file() error Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 010/112] of: don't report failure to of_read_file twice Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 011/112] efi: payload: make missing state reporting less verbose Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 012/112] libfile: factor out read_file_into_buf helper Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 013/112] efi: payload: image: allocate image via loader if it exceeds malloc area Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 014/112] efi: payload: image: use assigned barebox loader type on x86 Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 015/112] efi: payload: iomem: adjust types to avoid casting Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 016/112] commands: kallsyms: add command-line interface Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 017/112] block: define BLOCKSIZE globally in block.h Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 018/112] cdev: implement setter/getter for cdev device node Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 019/112] block: virtio: assign virtio-mmio device tree node to cdevs Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 020/112] commands: stat: print DT node for cdevs if available Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 021/112] partitions: have parsers record bootable bits Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 022/112] commands: stat: display bootable partition table bit info Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 023/112] block: record block device type Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 024/112] include: add definitions for UAPI discoverable partitions spec Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 025/112] efi: payload: restrict 8250 UART at I/O port 0x3f8 registration to x86 Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 026/112] fs: fix unreaddir, so readdir returns unread dirent first Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 027/112] fs: turn creat into static inline helper Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 028/112] fs: drop unused LOOKUP_ flags Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 029/112] fs: opendir: reference mount point until closedir is called Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 030/112] fs: factor out opendir iteration Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 031/112] fs: implement fdopendir and rewinddir Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 032/112] fs: remove unused member from struct nameidata Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 033/112] fs: always check path_init for errors Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 034/112] fs: set current working dir directly when mounting root Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 035/112] fs: implement openat and friends Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 036/112] fs: implement O_PATH Ahmad Fatoum
2024-01-05 11:22   ` Sascha Hauer
2024-01-05 11:26     ` Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 037/112] fs: support different root directories Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 038/112] fs: implement O_CHROOT Ahmad Fatoum
2024-01-03 18:11 ` [PATCH 039/112] commands: introduce new findmnt command Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 040/112] fs: initialize struct nameidata::last Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 041/112] fs: support opening / Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 042/112] test: self: add dirfd tests Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 043/112] commands: stat: add option for statat Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 044/112] efi: payload: lower command line options print from error to info Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 045/112] efi: payload: init: warn if /boot FS is unknown Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 046/112] commands: time: refactor into new strjoin Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 047/112] string: reduce strjoin runtime, drop trailing separator Ahmad Fatoum
2024-01-08  7:11   ` Sascha Hauer
2024-01-08  7:18     ` Ahmad Fatoum
2024-01-08  7:43       ` Sascha Hauer
2024-01-03 18:12 ` [PATCH 048/112] test: self: add strjoin tests Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 049/112] filetype: have cdev_detect_type take a cdev Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 050/112] ARM: mmu-early: gracefully handle already enabled MMU Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 051/112] efi: don't hide structs, enums or unions behind _t Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 052/112] efi: make headers self-contained Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 053/112] efi: unify whitespace for GUIDs Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 054/112] efi: efi-guid: add more GUIDs Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 055/112] ARM64: cpu: setupc: rewrite to be fully PIC Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 056/112] ARM64: runtime-offset: make get_runtime_offset " Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 057/112] pbl: introduce CONFIG_PBL_FULLY_PIC Ahmad Fatoum
2024-01-08  7:47   ` Sascha Hauer
2024-01-22 19:15     ` Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 058/112] efi: payload: fix ARM build Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 059/112] efi: payload: init: restrict barebox mem to first 1G only on x86 Ahmad Fatoum
2024-01-03 18:58   ` Michael Olbrich
2024-01-04 11:17     ` Ahmad Fatoum
2024-01-04 18:10       ` Michael Olbrich
2024-01-05  9:14         ` Ahmad Fatoum
2024-01-05  9:31           ` Michael Olbrich
2024-01-05 10:41             ` Ahmad Fatoum
2024-01-05 14:58               ` Michael Olbrich
2024-01-08  7:22                 ` Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 060/112] ARM: pbl: add 64K segment alignment for PE/COFF Ahmad Fatoum
2024-01-08  8:05   ` Sascha Hauer
2024-01-22 19:18     ` Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 061/112] efi: add efi_is_loader/efi_is_payload helpers Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 062/112] efi: payload: suppress EFI payload initcalls when not EFI-loaded Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 063/112] ARM: make board data definitions accessible to other architectures Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 064/112] boarddata: add barebox_boarddata_is_machine helper Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 065/112] common: add PE/COFF loader Ahmad Fatoum
2024-01-08  8:37   ` Sascha Hauer
2024-03-04 17:09     ` Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 066/112] efi: use efi_handle_t where appropriate Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 067/112] efi: block: move definitions into header file Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 068/112] efi: define efi_handle_t as opaque pointer Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 069/112] efi: constify guid_t in API Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 070/112] efi: rename efi_simple_input_interface to efi_simple_text_input_protocol Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 071/112] efi: add EFI_WARN constants Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 072/112] efi-stdio: fix wait_for_event argument Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 073/112] efi-stdio: wait for extended input key event when using extended input Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 074/112] efi: flesh out EFI definitions in header Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 075/112] efi: add efi_driver_binding_protocol Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 076/112] efi: improve usability of EFI_PAGE_* macros Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 077/112] fs: efi: move definitions into header Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 078/112] efi: fs: flesh out file system definitions Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 079/112] efi: stdio: fix efi_register_keystroke_notify prototype Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 080/112] video: mark EFI_GOP driver x86-only for now Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 081/112] filetype: add new file types for EFI-enabled Linux images Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 082/112] efi: payload: register handler for EFI-stubbed ARM64 kernel Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 083/112] efi: payload: factor C efi_main into dedicated file Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 084/112] efi: payload: early-mem: simplify error message reporting Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 085/112] efi: payload: early-mem: use EFI_PAGE_SIZE instead of PAGE_SIZE Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 086/112] ARM64: add optional EFI stub Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 087/112] efi: devicepath: improve const safety Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 088/112] efi: refactor device_path_to_partuuid for code reuse Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 089/112] efi: devicepath: implement device_path_to_str_buf variant Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 090/112] vsprintf: add %pD for printing EFI device path Ahmad Fatoum
2024-01-08  9:01   ` Sascha Hauer
2024-03-04 17:26     ` Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 091/112] lib: string: import Linux strreplace helper Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 092/112] efi: payload: dynamically determine bootloader file name Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 093/112] efi: payload: iomem: register later Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 094/112] efi: payload: protect against buggy EFI implementations Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 095/112] efi: payload: don't require efi_loaded_image->parent_handle for bootsource detection Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 096/112] commands: add cpuinfo -s option for stacktrace Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 097/112] efi: devicepath: align MemoryMapped name with spec Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 098/112] efi: devicepath: pretty print BBS BEV DeviceType Ahmad Fatoum
2024-01-03 18:12 ` [PATCH 099/112] efi: devicepath: format GUIDs as little endian Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 100/112] efi: devicepath: move END device node definitions into header Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 101/112] efi: devicepath: drop underscores in hex constants Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 102/112] efi: devicepath: namespace definitions Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 103/112] efi: devicepath: use flexible array members for trailing strings Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 104/112] efi: devicepath: drop unused macro Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 105/112] efi: devicepath: let compiler worry about unaligned unpacking Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 106/112] efi: devicepath: correct formatting of BBS Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 107/112] commands: provide efi_handle_dump in both payload and loader Ahmad Fatoum
2024-01-03 18:13 ` Ahmad Fatoum [this message]
2024-01-03 18:13 ` [PATCH 109/112] commands: efi_handle_dump: prepare for supporting EFI loader Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 110/112] commands: efi_handle_dump: print loaded image devpath Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 111/112] commands: efi_handle_dump: use guid_parse instead of open-coding Ahmad Fatoum
2024-01-03 18:13 ` [PATCH 112/112] commands: efi_handle_dump: don't ignore failure to parse GUID Ahmad Fatoum

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