X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fsd-id128.c;h=4286ae7d146027b40b03378151387d8f8d0a4a1e;hb=68fb08920b2162b48cf0fa8dd98b021327b42896;hp=f5e0432a3f9c6835f8d27aa9e9a070af94bda22c;hpb=689b9a22f7fa89686b2b5240b7ee9f449dea5630;p=elogind.git
diff --git a/src/sd-id128.c b/src/sd-id128.c
index f5e0432a3..4286ae7d1 100644
--- a/src/sd-id128.c
+++ b/src/sd-id128.c
@@ -6,16 +6,16 @@
Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see .
***/
@@ -24,13 +24,15 @@
#include
#include "sd-id128.h"
+
#include "util.h"
#include "macro.h"
-char *sd_id128_to_string(sd_id128_t id, char s[33]) {
+_public_ char *sd_id128_to_string(sd_id128_t id, char s[33]) {
unsigned n;
- assert(s);
+ if (!s)
+ return NULL;
for (n = 0; n < 16; n++) {
s[n*2] = hexchar(id.bytes[n] >> 4);
@@ -42,12 +44,14 @@ char *sd_id128_to_string(sd_id128_t id, char s[33]) {
return s;
}
-int sd_id128_from_string(const char s[33], sd_id128_t *ret) {
+_public_ int sd_id128_from_string(const char s[33], sd_id128_t *ret) {
unsigned n;
sd_id128_t t;
- assert(s);
- assert(ret);
+ if (!s)
+ return -EINVAL;
+ if (!ret)
+ return -EINVAL;
for (n = 0; n < 16; n++) {
int a, b;
@@ -70,7 +74,7 @@ int sd_id128_from_string(const char s[33], sd_id128_t *ret) {
return 0;
}
-sd_id128_t sd_id128_make_v4_uuid(sd_id128_t id) {
+static sd_id128_t make_v4_uuid(sd_id128_t id) {
/* Stolen from generate_random_uuid() of drivers/char/random.c
* in the kernel sources */
@@ -83,7 +87,7 @@ sd_id128_t sd_id128_make_v4_uuid(sd_id128_t id) {
return id;
}
-int sd_id128_get_machine(sd_id128_t *ret) {
+_public_ int sd_id128_get_machine(sd_id128_t *ret) {
static __thread sd_id128_t saved_machine_id;
static __thread bool saved_machine_id_valid = false;
int fd;
@@ -92,6 +96,9 @@ int sd_id128_get_machine(sd_id128_t *ret) {
unsigned j;
sd_id128_t t;
+ if (!ret)
+ return -EINVAL;
+
if (saved_machine_id_valid) {
*ret = saved_machine_id;
return 0;
@@ -129,7 +136,7 @@ int sd_id128_get_machine(sd_id128_t *ret) {
return 0;
}
-int sd_id128_get_boot(sd_id128_t *ret) {
+_public_ int sd_id128_get_boot(sd_id128_t *ret) {
static __thread sd_id128_t saved_boot_id;
static __thread bool saved_boot_id_valid = false;
int fd;
@@ -139,6 +146,9 @@ int sd_id128_get_boot(sd_id128_t *ret) {
sd_id128_t t;
char *p;
+ if (!ret)
+ return -EINVAL;
+
if (saved_boot_id_valid) {
*ret = saved_boot_id;
return 0;
@@ -181,12 +191,13 @@ int sd_id128_get_boot(sd_id128_t *ret) {
return 0;
}
-int sd_id128_randomize(sd_id128_t *ret) {
+_public_ int sd_id128_randomize(sd_id128_t *ret) {
int fd;
ssize_t k;
sd_id128_t t;
- assert(ret);
+ if (!ret)
+ return -EINVAL;
fd = open("/dev/urandom", O_RDONLY|O_CLOEXEC|O_NOCTTY);
if (fd < 0)
@@ -205,6 +216,6 @@ int sd_id128_randomize(sd_id128_t *ret) {
* only guarantee this for newly generated UUIDs, not for
* pre-existing ones.*/
- *ret = sd_id128_make_v4_uuid(t);
+ *ret = make_v4_uuid(t);
return 0;
}